1.The purpose and scope of application of the machine This machine has high labor productivity and high working precision for bending metal sheets. When bending sheets of different thicknesses, Vshaped grooves with different opening sizes in the lower mold should be selected (the V-shaped groove opening size should generally be selected to be ≥ 8 times the thickness of the sheet). Using upper and lower molds of different shapes, workpieces of various shapes can be bent. The bending force can be calculated from the sheet metal bending force table and the bending force hydraulic pressure conversion chart or the bending calculation formula. The sheet metal can be bent and formed in one stroke of the slider, and workpieces with more complex shapes can be obtained after multiple bends. This machine adopts steel plate welded structure, which has sufficient strength and rigidity. Its hydraulic transmission can ensure that serious overload accidents will not be caused by changes in sheet thickness or improper selection of the V-shaped groove of the lower die during operation. It has the advantages of stable operation, convenient operation, low noise, safety and reliability. The compensation mechanism can compensate for the deflection of the workbench and slider when bending sheets to ensure higher working accuracy. At the same time, it is equipped with a grating ruler to ensure the repeatable positioning accuracy of the slider, thereby ensuring the consistency of the bending
angle during mass production. This machine can replace the specially designed upper and lower molds according to the shape requirements of the workpiece to obtain workpieces of special shapes. It can also be used for punching when equipped with corresponding equipment. The slider stroke of this machine can be adjusted arbitrarily within the allowable range, and has action specifications such as inching, single and continuous strokes. The inching specification allows for easy mold testing and adjustment. This machine has advanced technology and reliable performance. It is one of the ideal sheet metal forming equipment. It is widely used in aircraft, automobiles, shipbuilding, electrical appliances, machinery, light industry and other industries.
2.Main structure of the machine 2.1Machine Body (1)
Aesthetically pleasing design.
(2)
Major components are designed and optimized using the
world-renowned finite element software ANSYS. (3)
Integral welded steel plate structure, providing high rigidity.
(4)
Stress relief treatment using natural aging and vibration.
(5)
Structural components are rust-free and coated with anti-rust
paint. (6)
The machine tool's column and lower worktable are machined
in one go using a large floor-type milling machine, ensuring the parallelism and perpendicularity of each mounting surface. (7)
Top-mounted bending design ensures smooth operation,
convenient operation, and safety. (8)
Under relevant national standards, the bending angle accuracy
can reach ±30°.
2.2 Hydraulic System The system utilizes brand-name or imported proportional servo valves for drive, achieving extremely high synchronous control accuracy. The integrated hydraulic control system simplifies piping, prevents leaks, improves machine tool stability, and also results in a cleaner, more aesthetically pleasing appearance. The use of an internal gear pump ensures low overall system noise and a long service life. Imported sealing rings are selected, providing excellent sealing performance, reliable operation, and a long service life.
2.3Synchronization Technology The bending machine employs electro-hydraulic servo control technology for synchronization. The slider position is fed back to the CNC system by optical encoders on both sides. The CNC system then controls the opening size of the synchronization valve and adjusts the oil supply to the hydraulic cylinder, thereby controlling the synchronous operation of the sliders (Y1, Y2) and maintaining their parallel position to the worktable at all times. The CNC system automatically controls the worktable deflection compensation based on the processing condition of the sheet metal to achieve a uniform angle along the entire length of the workpiece.
2.4 Compensation Technology The
automatic
mechanical
deflection
compensation
system
overcomes the impact of slider deformation on workpiece quality during operation, ensuring good straightness and bending angles of the processed workpiece. The mechanical compensation consists of a set of corrugated strips installed in the lower worktable, allowing for relative movement of the worktable and an ideal curve for the stroke, ensuring that the relative position of the worktable and slider remains unchanged after being subjected to force. The compensation amount is automatically calculated and determined by the CNC system based on the plate thickness, mold opening, and material properties.
2.5 Transmission System The transmission system utilizes Taiwanese-made linear guides, ball screws, and synchronous pulleys/belts, ensuring high positioning accuracy.
2.6 Molds The machine can be equipped with upper and lower molds of different lengths, which can be combined to form a certain width to meet special processing needs (customization is available according to user requirements).
2.7 Machine's Anti-Off-center Load Capacity The machine's electro-hydraulic servo system is a position control system. It dynamically detects the synchronization error of the slider through a grating ruler, and corrects the slider's synchronization error by sending a signal to the electro-hydraulic servo valve via the CNC system, ensuring that the slider remains parallel to the worktable even under offcenter load conditions.
2.8 CNC System
The integrated CNC system module is professionally designed for electro-hydraulic synchronous bending machine control. It incorporates ergonomic and user-friendly design principles, catering to both domestic and international user needs. Based on a multi-axis control panel-mounted structure, it is directly installed in a suspended cabinet.
The user-friendly interface and true-color LCD display provide all the basic functions of bending machine control. Its unique "shortcut key" method offers fast and simple programming.
Y-axis angle programming, back gauge positioning, table mechanical compensation, and pressure control are all standard features.
Machine appearance drawing
Synchronization block installation diagram
Disregarding compensation deformation
（1）Including compensation deformation
3.Hydraulic system section 3.1Hydraulic System Principle Description This hydraulic valve group adopts a closed-loop synchronous control system, which has strong anti-eccentric load capacity and high synchronization accuracy.
The hydraulic control system includes: (1)
Pressure block: composed of a proportional pressure valve,
safety valve, solenoid directional valve, proportional pressure reducing valve, oil filter, etc. (2)
Synchronization control block: directly installed on the two
cylinders, it consists of a proportional servo valve, lower chamber safety valve, back pressure valve, cone-type solenoid directional valve, etc. The filling valve is a normally open filling valve, installed in the cylinder body.
3.2Common Hydraulic System Faults and Solutions (40T300T) 1. No System Pressure (1)
Check if the plug on the proportional pressure valve is loose, if there
is a corresponding electrical signal, and if the safety valve is loose. (2)
Check if the two-way cartridge valve core is stuck, if the hydraulic
resistance on the core is blocked, and if the proportional pressure valve core is stuck. (3)
Open the tank cover. If the set pressure cannot be reached, check the
return oil flow. If there is no return oil or the flow rate is slow, the oil pump is damaged and needs to be replaced. 2. Slider Slides Downward (1)
First, check if the back pressure valve and safety valve pressures
have been lowered. (The back pressure valve is set to static pressure + (3~5) MPa, and the lower chamber safety valve is set to 25 MPa).
(2)
Stop the slider at the upper starting point and remove the
proportional servo valve from the synchronizing block. Observe if there is oil overflow from port A of the proportional servo valve on the valve block. If oil overflows, it indicates a leak in the synchronizing block. Conversely, if there is no overflow, it indicates a leak in the hydraulic cylinder. Alternatively, swap the left and right synchronizing blocks; if the downward movement does not follow the synchronizing blocks, it indicates a leak in the hydraulic cylinder.
(3)
Clean the back pressure valve core. If this does not solve the
problem, clean the lifting valve and safety valve. Note that after cleaning the back pressure valve or safety valve, the copper gasket or combination gasket installed under the valve should be replaced. (4)
If the slider slides down in one section but not in others, this indicates
a poor seal in the hydraulic cylinder in that section.
3. The slider does not descend quickly, descends slowly, or descends asynchronously. (1) Check if the plug on the lifting valve on the synchronizing block is loose and if there is a corresponding electrical signal. Check if the electrical signal input and feedback on the proportional servo valve are
consistent. If they are inconsistent, it indicates that the proportional servo valve core is stuck and needs cleaning.
(2) Check if the liquid resistance in the X port on the synchronizing block is blocked, and check if the filling valve under the synchronizing block is stuck.
(3) Check if the slider guide rail or hydraulic cylinder is too tight. 4. Slider descends rapidly but does not advance. In diagnostic mode, check if the hydraulic system has pressure.
5. In diagnostic mode, send corresponding electrical signals to the proportional servo valve, proportional pressure valve, and solenoid directional valve to close the filling valve in the corresponding opening direction of the proportional servo valve. If neither cylinder can advance, check if the plug on the solenoid directional valve on the pump block is loose, if there is a corresponding electrical signal, and if the valve core is stuck. If a cylinder cannot advance, check if the hydraulic resistance in the synchronizing block on that cylinder is blocked. If the filling valve under the synchronizing block is stuck, and the slider stops midway between rapid descent and working advance: (1) Is the oil level in the tank too low, causing the filling valve to suck in
air? (2) The oil inlet of the filling valve is not sealed, causing air leakage. (3) The temperature is too low, causing air bubbles in the oil to be sucked into the upper chamber of the cylinder. 6. Slider cannot return, or the return speed is too slow. (1) In diagnostic mode, check if the hydraulic system has pressure.
(2) In diagnostic mode, simultaneously provide corresponding electrical signals to the proportional servo valve, proportional pressure valve, and solenoid directional valve. This opens the filling valve and the proportional servo valve in the corresponding opening direction. If neither cylinder can return quickly and normally, check if the solenoid directional valve on the pump block has a corresponding electrical signal and if the valve core is stuck. If a cylinder cannot return quickly and normally, check if the hydraulic resistance inside the synchronizing block on that cylinder is blocked. Check if the filling valve under the synchronizing block is stuck.
(3) Check if the electrical signal input and feedback on the proportional servo valve are consistent. If they are inconsistent, it indicates that the proportional servo valve core is stuck and needs cleaning.
7. If the oil temperature rises too quickly and the system pressure is too high when the oil pump is running dry, the motor is prone to tripping.
(1) When the oil pump is running dry, the system pressure is generally around 1 MPa. If the pressure is too high, check if the hydraulic resistance at the Y port on the pressure control cover is blocked. Check if the return oil pipe diameter is too small. (2) If the system has no pressure but the oil temperature rises rapidly when the machine tool's oil pump is running dry, it indicates that contaminants in the oil, oil tank, or pipelines have clogged the filter element, and the oil filter element needs to be replaced.
(3) Check if the feed distance is too long or the pressure holding time is too long. (4) Check if the return pressure setting is too low.
4.Machine hoisting and installation 4.1 Lifting and Transporting the Machine This machine has a relatively high and forward center of gravity. Therefore, caution must be exercised during lifting, handling, and installation. Attention must be paid to the center of gravity to prevent the machine from tipping over and causing an accident.
4.2Machine Installation During installation, the workbench should be used as the reference for leveling. The tilt in both the longitudinal and transverse directions should be within a range of 1000:0.2. The machine should be installed on the foundation, followed by the installation of anchor bolts. Finally, secondary grouting should be performed. After the cement has completely hardened, the level should be recalibrated.
(Note: Models under 300 tons generally do not require anchoring; ensuring the ground is level and can bear the weight is sufficient. Anchor anchoring can be performed according to customer requirements.)
5.Machine lubrication, operation and adjustment 5.1 Machine Lubrication Before starting the machine, be sure to inject lubricating oil into the location indicated by the lubrication indicator on the equipment. Lubrication should also be applied as needed during each shift.
5.2Machine Adjustment 5.2.1 Adjustment of the Lower Limit of the Slider
Due to differences in the thickness of the bending plate and the opening size of the V-groove of the lower die, the slider stroke distance must be adjusted according to the actual needs of the workpiece. The stroke distance can be changed by pressing the given electrical button. Note: When adjusting the lower limit of the slider, the slider must be stopped at the top dead center position to avoid damaging the mechanical structure or the micro motor.
5.2.2 Adjustment of the Upper Limit of the Slider When the slider rises, the highest point value can be set in the CNC system to stop the slider at the designated position. Therefore, the height should be adjusted appropriately to reduce the idle stroke distance of the slider, improve labor productivity, and issue continuous action commands in the "continuous" mode.
5.2.3 Adjustment of the "Slow" Action of the Slider: After the slider descends and contacts the workpiece, it automatically performs a slow action without adjustment.
5.2.4 Adjustment of the Distance Between the Upper and Lower Dies: When bending the workpiece, when the upper die descends to the bottom dead center, the distance between the two sides of the upper and lower dies can be measured. This distance should be adjusted to the plate thickness + 0.10mm.
5.2.5 Adjustment of bending force: As long as it is within the machine's maximum load range, the system will automatically calculate the tonnage based on the plate thickness, material, and length, without the need for adjustment.
5.3Machine Trial Run and Operation Before trial run, you must be familiar with the machine's structure, performance, and operating methods. Lubricating grease should be added to all lubrication points, and oil should be added to the oil tank. (This machine uses N46# high-pressure hydraulic oil. If the ambient temperature changes significantly and the machine malfunctions, an appropriate oil grade can be selected. The oil level should be 4/5 of the tank height. Replace the oil after one month of initial use, and then annually as needed.) During the initial trial run, first test the machine's operation with "jogging," then test with "single..." The following steps can only be taken after verifying that the machine operates correctly, including adjusting the "onetime" and "continuous" actions, slider stroke, and back gauge control. 5.3.1 Determine the lower die opening size based on the plate thickness. Generally, the opening size is 8-12 times the plate thickness; for thin plates within 2mm, it is 6-8 times.
5.3.2 Align the centers of the upper and lower dies.
5.3.3 Adjust the lower limit position of the slider.
5.3.4 Determine the positions of the front and rear stop plates (blocks).
5.3.5 Determine the upper limit position of the slider.
5.3.6
Determine the "point" position. "Dynamic", "single",
or
"continuous" action specifications.
5.3.7 Place the sheet metal in the middle of the machine's worktable for a test press.
Notes on this series of electro-hydraulic servo bending machines:
(1) This machine should not be loaded on one side to avoid affecting the workpiece and machine accuracy. If it is necessary to load one side, the sheet metal should be bent on the other side simultaneously to solve the problem of uneven load.
(2) Pay attention to the oil pump rotation mark during the test run.
5.4 Machine Safety and Maintenance
5.4.1 This machine must be operated by a designated person, and the operator must be familiar with the structure of this machine. 5.4.1 Perform regular maintenance and record daily usage
information, including performance and operating methods, for future reference.
5.4.2 Use the correct operating procedures and nominal force for this machine.
5.4.3 Do not operate under unilateral loads; i.e., do not operate under off-center loads.
5.4.4 Ensure the hydraulic oil in the tank is at the normal level and that the oil is clean and the oil passages are unobstructed.
5.4.5 Add lubricating oil or grease regularly as required by the lubrication label. 5.4.6 Ensure that electrical and hydraulic components operate smoothly and are positioned correctly.
5.4.7 Pay attention to personal safety.
Bending force---hydraulic pressure conversion table
Sheet bending pressure gauge
CNC bending machine precision inspection sheet During the accuracy inspection process, the testing conditions for working accuracy are as follows:： a. Specimen length: 2000 when the workbench length is >2000-3200mm; 3000 when the workbench length is ≥3200mm. b. The width of the specimen shall not be less than 100mm. c.Thickness of specimen: 2mm when nominal force ≤1000KN. Nominal force >1000-2500KN is 3mm. d.The test piece material should be A3 steel plate, its tensile strength δb ≤ 450Mpa. The number of test pieces should be no less than 3. The test should be placed in the middle of the workbench and should not be loaded on one side alone. The bending angle of the specimen is 90 degrees, measured from 100mm from the end of the specimen. Working accuracy inspection:
Actual Inspection
Inspection Allowance mm
No. items
measur
diagram ement
Specimen P1
Accuracy
In terms of
level
total length
bending
±30′
angle
±1°
1º
±1°30′ Accuracy
In a length of 1
level
meter
Specimen bending 0.30
P2 straightness
0.75
mm 1.00
0.2
CUROW KT15 Operation manual of electrohydraulic bending
Electro-hydraulic bending machine system manual of operation Version of V1.10
CUROW KT15 Operation manual of electrohydraulic bending
1. Operation overview and general introduction 1.1 numerical control system: Appearance picture (two suspension cases) ：
The precise appearance of each system may vary The operation of the system is mainly realized through the touch screen on the front panel. The touch screens and their functions are described in the next section
1.2 Front panel element scram button:
The panel has an emergency stop button on the system, so that emergencies can be handled in time during programming.
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CUROW KT15 Operation manual of electrohydraulic bending
1.3 Operation and programming mode The main interface of the control system is as follows:
Depending on the activated navigation button, the screen display is different, and the current processing product name is displayed at the top of the main interface The main interface structure is shown as follows: title bar: At the top of the screen, the title bar is always displayed, where the alarm information, the currently processed product name, the current time, the current position of each axis, and the state, the built-in oil pump start button, the lighting switch can also be operated here
warning message:
product name:
present time:
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CUROW KT15 Operation manual of electrohydraulic bending Axis position and state:
Oil pump start and stop:
light switch: Information bar: In the information bar, all the basic parameters related to the product can be displayed
On the right is the command bar, which clicks on different commands to make different operations navigation bar: All the modes can be found in the navigation bar, which is displayed all the time. Click on the large icon on the system to switch the system directly from one mode to another mode.
Main mode and navigation button explanation:
3
CUROW KT15 Operation manual of electrohydraulic bending Build a new program or select an edited program
Create or modify upper, lower and material properties
Create a new CNC program, or edit and modify the currently selected program
Processing of the currently selected product program
Generate a single-step bend program without involving existing programs in the product library
Edit user settings, machine tool parameters, axis parameters, backup / restore, software version information
1.4 begin 1.4.1 dead work To start preparing the product programming money, the following preparations must be made:
The correct material properties must be written in the material table, and you can find the material page in the mold mode.
The correct mold must be edited in mold mode, which is necessary to create CNC programs, including upper and lower mold.
1.4.2 update routine The programming mode can access the current product program, can modify the existing program in this mode, can choose each step to modify the axis position, Angle and other processing parameters, and after the modification, the system will automatically calculate according to the current programming parameters. 4
CUROW KT15 Operation manual of electrohydraulic bending
1.4.3 production pattern The edited program can be run in automatic mode, and the whole program can be executed in the steps. The manual mode is separate, in which only one bending step can be programmed and executed. More information is found in the later sections
1.4.4 Data Backup and Recovery Products, mold files can be stored externally, can be backup through U disk under all products, molds, materials, etc More information is found in the later sections
1.5 Operation help information 1.5.1 Data input
When a programmable data button is clicked, the input box will pop up, and the maximum and minimum value of the current parameter is prompted. After editing the new value, click Enter to confirm. If the area is not required, the input box is automatically hidden.
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CUROW KT15 Operation manual of electrohydraulic bending
1.5.2 Parameter selection
When the parameter to be modified is selected from the database, the navigation selection box will automatically pop up, and you can directly click the desired type for selection. If no modification is needed, click cancel.
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CUROW KT15 Operation manual of electrohydraulic bending
2. Mold, mold library 2.1
patrix
2.1.1 New on the mold Click the new mold on the upper module library page, and the editing box will pop up, with the corresponding mold parameters: name, height, Angle, and radius The name of the new model needs to be manually edited, and you can edit the letter symbols and numbers
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CUROW KT15 Operation manual of electrohydraulic bending
2.1.2 Modify on the mold If you need to modify the existing parameters of the module page, click the name of the mold, and then click the right command bar to modify the height, Angle and radius parameters of the mold, and click confirm
2.1.3 Remove the upper module Click to select the upper mode you want to delete, and click the command to delete on the right Each page can display 9 molds, and you can turn the page to find other molds 8
CUROW KT15 Operation manual of electrohydraulic bending
2.2 mold unloading
2.2.1 New under the mold Click the new mold on the next module library page, and the editing box will pop up, with the corresponding mold parameters: name, height, V opening, Angle, radius, safe distance, and speed rotation distance The name of the new model needs to be edited manually edited, and letter symbols and numbers can be edited
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CUROW KT15 Operation manual of electrohydraulic bending
2.2.2 Modify the next model Click Edit on the next module library page, and the editing box will pop up, with corresponding mold parameters: name, height, V opening, Angle, radius, safe distance, speed rotation distance. After modification, click confirm
2.3 Materials Material editing, there are 4 default material parameters and two custom material parameters
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CUROW KT15 Operation manual of electrohydraulic bending 1、 Stainless steel 2, iron plate 3, aluminum plate 4, galvanized plate Tensile strength: affects the calculated bending pressure, yield compensation, internal and external dimensions, and the calculated depth of the same Angle plate. Elastic modulus: influence yield compensation calculation Correction coefficient: the depth difference between the long and short plates at the same Angle
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CUROW KT15 Operation manual of electrohydraulic bending
3. Product, product library
3.1 Add a new program Click on the new program on the right, and the following editing box will pop up
Product name: You can edit the combination of letters, symbols, and numbers Programming mode can be switched: Angle programming, location programming Inside and outer ruler: the outer size refers to the size of the plate thickness after bending. Select the outer size, the system will automatically correct a certain amount of X-axis data according to the thickness of the plate Number of processed parts: the number of products required to be processed Plate thickness: according to the actual plate thickness value input Materials and molds are selected directly in the library
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CUROW KT15 Operation manual of electrohydraulic bending After editing, click confirm
3.2 duplicate
Click on the current same plate attributes of the program can be copied, quick programming
3.3 delete program Click the selected program, click the right command bar delete button, to delete
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CUROW KT15 Operation manual of electrohydraulic bending
4.
programming
4.1 Current Step Edit 4.1.1 Bending parameters
Bending mode:
Free bending, press the bottom bending, circular arc bending three ways to switch Free bending is the editing angle, which is automatically calculated by angle programming The bottom bending is to automatically calculate the Y bending depth of the upper and lower die die according to the height and plate thickness of the mold and other parameters Arbend is the automatic calculation of the depth of each bend Y based on the parameters of the edited arc
cycle index:
The number of cycles required for the current working step Board width: Edit according to the width of the actual processed product product orientation: The absolute position of the product in the Z-axis direction, with the left side of the machine tool as the reference zero
Bend Angle:
Bend angle, effective when the angle is selected for angle programming and free bending 14
CUROW KT15 Operation manual of electrohydraulic bending
Y position:
The Y-axis depth required for the bending Variable speed point: The transformation point of the slider from the fast down to the worker forward Return distance: After the bending is completed, the opening gap between the upper and lower modes is calculated as the starting 0 point from the lower dead point position Step change: The next step is the return step Step-by-step delay: After the change signal is delayed, jump to the next step
4.1.2 Speed Bending speed: The slow down speed after reaching the shift point, initially this parameter value is copied from the German parameter "default input speed" in the setting mode Charge unloading speed: Speed of pressure unloading after the workpiece is formed
4.1.3 Strength Bending tonnage: Maximum adjustment pressure in the working stage (automatic calculation, programmable) hold time: Y-axis compression time at the bend point (Programmable) Removal distance: Pressure relief distance of system release working pressure after bending (automatic calculation)
4.1.4 Auxiliary shaft
X-axis mode:
Can switch the internal ruler or external size programming X-axis position: Position of the rear fender X-axis correction: Position correction of the rear retaining gear X-axis concession: At the concession distance of the selected shaft in the current bending step, the "concession" starts when the slider holds the plate Give way to wait: Select whether to stop the slider during the concession process Fender position:
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CUROW KT15 Operation manual of electrohydraulic bending The baffle value switches between order 1,2 and 3 R-axis position: The height of the rear gear, the R axis value equal to the height of the lower mold means that the bottom of the gear finger is parallel to the lower mode Z1 axis position: The position of the left gear finger, the starting point zero is the left most side of the machine tool
Z2 axis position:
Position of the right gear finger, the starting zero is the same as Z1 Amplitude compensation: The raised height of the workbench
4.1.5 Product information material: Bending product material properties, according to the actual situation to make the correct choice thickness of slab: Actual thickness of the product
4.1.6 Mold Select the appropriate upper and lower modes according to the actual situation
4.2 Add a step Clickontherightcommandbartoaddasteptoautomaticallycopythepreviousstep inserted into the bend, and then you can modify the processing parameters of this step
4.3 Delete the step Select the step to delete, and click on the delete step to delete the step
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CUROW KT15 Operation manual of electrohydraulic bending
4.4 List display
After all the steps of the product program are edited, you can click the list to display, which will display all the steps of the product in the form of the list, and the order of the steps can be exchanged (click to select the step you want to exchange- - - -click "change" - -click the step you want to exchange- -and then click "change"), and the two processes can be exchanged When you edit the program parameters, you can directly click to save the changes, orafterswitchingtoothermodes,thepop-upboxpromptswhethertosavetheprogram,
click
save
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CUROW KT15 Operation manual of electrohydraulic bending
5.
automatic mode
5.1 Program Run After the product is edited, click automatic and click the running key in the lower right corner to switch to the bending production mode. All the steps of the current program will bend in turn, and every complete program is completed, the number of processed parts will change
5.2 Product correction In the mode, you can correct the X-axis, the angles on both sides of each bend of the product, and the disturbance compensation
5.3IO state During the program operation, you can click on the right IO status to monitor the signal of the system
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CUROW KT15 Operation manual of electrohydraulic bending
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CUROW KT15 Operation manual of electrohydraulic bending
6.
manual mode
Manual mode is a single step operation and can only edit one bending operation
6.1 To zero In manual mode, you can choose to let a single axis alone or multiple axes return to the reference point together. When the zero command is clicked, the following window will appear. You can select confirmation, and then click the run button, and the selected axis can be returned to the reference point
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CUROW KT15 Operation manual of electrohydraulic bending
6.2 Manual positioning In the manual positioning, all the axes can be run manually separately
When the slider needs to slow down on both sides at the same time, click the Y axis, and then step on the foot, then the slider will slow down at the right manual speed, manual pressure. The foot is a quick return When the slide is tilted, select Y1 or Y2 axis to step separately and flatten the slide before the next operation 21
CUROW KT15 Operation manual of electrohydraulic bending X axis, R axis, Z1 axis, Z2 axis, C axis can be selected, below the + or-for manual movement
7.
Special application
7.1 The arc is curved
On the programming page, select the large arc bending in one of the steps, and the parameters required to edit will appear in the lower right corner (the arc bending is the direction of each knife to the X-axis)
angle:
The center angle corresponding to the folded arc angle correct: In the setting mode, you can choose whether to correct the entire arc angle or each correction Arc radius: The circular arc corresponds to the radius of the circle arc length LS: The X-axis position of the first knife of the arc (arc length + the remaining plate length after arc folding)
broken number:
The number of bending steps required to complete the arc
The calculation mode
You can choose whether the arc is equal or equal apart 22
CUROW KT15 Operation manual of electrohydraulic bending
7.2 The slider stays below the reference point for the mold or during shutdown The new mold requires the upper die and the lower die alignment to the center, and the elimination of the mold gap
In the manual positioning interface, click to select the Y axis, and then step on the foot, the mold will be slow, the mold press, the appropriate pressure can be set a little smaller
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1. Overview of operations 1.1 CNC system The appearance of the CNC system is as follows:
Each system may look different. The operation of the whole system is mainly realized through the touch panel of the screen The system screen is equipped with an emergency stop switch on the installation mechanism and two USB data ports on the side
1.1.1 Panel elements
Emergency
stop
button
activate key
break key
1.1.2 USB interface
There are two USB ports on the right side of the system to connect external devices, such as keyboard, mouse, U disk, etc
1.2 Operation and programming modes The main interface of the control system is shown as follows:
Depending on which navigation button is activated at the bottom of the screen, the content displayed on the screen will also vary. At the top, there are different functional buttons and product information displayed. The structure of the home screen is as follows:
title bar ： The title bar at the top of the screen will always be displayed. This area has the LOGO, date and time, product information, alarm status, shaft data in the service bar and running status, as well as some function keys.
Information column: The contents of all selected patterns in the information bar are displayed.
Command column: The command column is on the right side of the information column and is part of the information column
navigation bar ： The navigation bar can be found to switch between all the functional pages, and this area is always displayed
Navigation button function explanation
Create a new product program, or select another existing program from the product library
Draw or create a new product, or edit an existing graphic product (only if graphic programming is valid)
Set and modify the current product mold Settings
Calculate and modify bending operations (buttons are only valid during graphic programming)
Create or edit existing data programs
Use a selected program or product to start production
Single step bending program, independent of all product programs
It includes some user settings, parameter Settings, and material Settings
Including mold library, machine tool shape, stopper shape and other parameters Settings
function button ：
Switching on and off the lighting system of the machine tool
Oil pump start and stop button
1. Products, product library 1.1 introduce In the product mode, you can choose to start production or repair the previously generated product To modify, to create similar products. To start generating new products or programs, you can do this in this mode Use "new products" or "new procedures".
1.1.1 Main display
In the product mode a general overview of the product library can be displayed, where the product program can select the product to modify and execute. Each item in the list is a graphic thumbnail of the product (digital program display symbol), product ID, product description, bending step The number, product type and last modified or used time are composed.
If the product program is executed, its ID will be displayed at the top of the screen and can be selected by clicking on the ID number or other parts of the product line. When too many products are displayed, you can drag the list up until all products are displayed. Then click the product to select and activate it.
1.1.2 Product selection To select a product, simply click once. The product will be selected and loaded, and production can begin by clicking the auto button. You can also start step-by-step navigation to complete mold setup, bending processes, and product data using product diagrams.
1.1.3 New Product Click on the new product to start a new graphic product After clicking on the new product, the program of the new product starts with setting general parameters, such as product ID, board thickness, material and so on. Product name, product description support Chinese input.
1.1.4 New Program Click on the new program to start a new digital program
After clicking the new program, the program starts with setting general parameters, such as product ID, plate thickness, material and so on. Product name, product description support Chinese input.
1.1.5 view You can switch between list display and graphical display mode to browse products
1.1.6 Product replication and deletion To delete a product in product mode, click the product to select it. Then click Edit and select the Delete button. To finalize the deletion, you need to confirm again.
To copy a product, click the selected product, then click Edit and Copy. After that, you can edit the product name and copy it. The products are in the same directory. The mold configuration and bending process data will be completely copied.
2. Graphics programming 2.1 Universal properties of products Edit an existing product graphic by selecting a specific product in the product library and selecting the drawing
To begin drawing a new product, select the new product from the product library. When a new product drawing begins, the generic product properties interface is displayed. The properties and generic data must be set before the drawing begins.
product ID Each product has a unique name to distinguish it.
product description The name or description of the program. thickness Thickness of folded sheet.
material type Select the material type of the panel. The system contains four pre-programmed materials. Click on the desired material to select and activate it.
Bending length Z-direction width of the folded plate size When adding a new edge, confirm whether the external or internal dimension is used in the product. The following shows two types of dimension definitions.
radius The bending radius of the product will be recalculated after the mold setting is modified. This is because the mold affects the radius calculation. By default, when "Use Calculation" is selected through this parameter, you can disable and select "Use Programming". Therefore, the products radius will not be recalculated and will use the programming result instead.
Bend tolerance The bending tolerance of the product can be selected as either "use calculation" or "use programming". After selecting "use calculation", the bending tolerance will be calculated using a formula or bending tolerance table.
2.2
2D product graphics
3.2.1 Introduction After entering the general product data, the graphical interface will be displayed
At the top information bar you can see some product information, product ID, product description, inner/outer size selection, material. Now you can create product outlines. You can quickly create products in sketch mode by clicking with your finger. You can then enter actual product dimensions and related values using the keyboard. You can also directly enter the angle using the keyboard and then input the side length. The keyboards input bar provides this functionality. You can repeat this step continuously until you obtain the product contour diagram. Product data can be modified in the product properties. Product angles and line segment properties can be modified in the properties.
Product data can be modified in the product properties. Product angles and line segment properties can be modified in the properties.
After the product graphics are completed, you can directly go to the next processing procedure in the navigation bar. First confirm the mold configuration, then do the process.
3. Mold setup 4.1 Introduction
Edit or modify the mold configuration of the product, and select the mold configuration used by the product from the mold library
4.2 Standard procedures After the mold is set, the upper part of the screen shows the front view of the machine tool setting, and the lower part of the screen shows the mold data. In this screen, the mold setting in the machine tool can be programmed.
In the front display, the main parts of the machine tool will be displayed in a top to bottom order: The machine tool slider Upper mold fixtu re upper mold mold unloading staging The machine tool components have been selected in machine tool mode and are usually not changed.
4.3 Mold selection The machine tool opening is empty before a new mold configuration is started.
Select "Add Upper Mold" and "Add Lower Mold" to add the mold to the configuration
You can click on the mold in the list to make a selection. To change the length and position of a mold, move the cursor to the corresponding field, enter the new value, and press the OK button. When the length and position are changed, the mold is ready. The mold can be selected by clicking it, or you can drag and drop it to the desired position to modify its position.
The repositioning function of the mold is enhanced through dragging to achieve precise positioning. During the dragging process, the positioning speed decreases as the finger moves downward. The farther the finger moves downward, the slower the positioning speed becomes and the higher the precision becomes.
delete Delete the currently selected mold.
4. Bending process 5.1 Introduction Create or modify bending operations for the products graphic program, select products from the product library and use bending operations.
When the mold is configured, you can start bending simulation to determine a product bending process. Click the bending process button in the navigation bar to begin determining the bending process.
The bending process can be determined by automatic calculation of the bending product. It can also be manually confirmed step by step from a flat plate without using the automatic calculation function. In the bending process interface, the product is displayed as the final bending position between the molds.
5.2 Displaying bending process When the toggle button is pressed, a graphical overview of the bending process is displayed
Here you can do step exchange to manually adjust the process steps.
5. Product editor 5.1 introduce To generate or modify a data program, start a new program from the product pattern, or go directly to the program.
To edit an existing CNC program, select the relevant product from the product library and click the programming button in the navigation bar. When starting a new program, select a new program and provide the main product attributes and mold configuration. The system will automatically switch to the programming interface. In both cases, the interface shown above appears. In both cases, the programming and modification of the data method are the same. The main interface displays existing digital programs or allows you to start a new one. The first step to be programmed is the selected process step. The process step selector at the top of the screen enables navigation within the process step. Selected process steps can be clicked to activate them as needed. Next to the home screen, there are command buttons for viewing and related functions. function key The following is a description of the function keys:
On the main interface, digital bending data can be displayed at the same time with the graphic information selected above.
All the steps are displayed in the table. When the graphic information of the selected step is selected, all the step data are displayed.
Change the mold, which can replace all the steps or a special step of the mold.
Mobile products can move the product position to the relative mold position.
Mobile gear refers to the ability to reposition the rear gear finger. Depending on the type of product and optional software available for gear guidance, it can provide graphical gear guidance to find the relevant gear finger position.
Product attributes can be entered into the overall comprehensive attributes of the product, not individual step attributes.
Notes, opening a window to view and edit notes for the current product or special bending step. These notes are also valid during production.
Add a new step to an existing program.
6.2. Programming patterns, parameter descriptions This master interface displays the valid bending steps, and from this master interface, special parameters can be viewed and edited from each valid bending step. The product ID and product description are displayed in a line at the top of the screen..
If the graphic product has graphic information it can also be displayed.
6.2.1. Work parameters Bending patterns Select the required bending method The system provides the following standard bending methods. -Free bending -Bottom bending -Flanging and bending -Flip & Press Bending patterns The free bending sheet is pressed into the required depth by the upper mold to bend the sheet into the weave From
the
perspective
of
process.
The
system
automatically calculates the bending angle to achieve programming The required Y-axis position of the degree.
Bottom pressing bending sheet bending is formed by pressing the sheet between upper and lower dies. The bottom of the mold is the target position of the Y-axis by default. Flanging bending is the process of folding a sheet metal into two layers. This can be done even if the sheet has already been bent forward. The middle is folded into a sharp point and then flattened. The system calculates this operation Precise position of the Y-axis at time: two times the plate is added to the lower mold surface Material thickness. The position of the Y-axis can be adjusted by editing the "flange opening height" Flipping & Bottom Pressing This is the same as a large arc bend, but the system is below thetopofthedie The folded sheet is pressed between the upper and lower dies.
Bending length The length of the plate between the molds.
Product positioning The absolute position value of the product in the Z-axis direction. The left side of the machine tool is the 0 position. angle This bending requirement is viewed from the perspective of the angle. This parameter is only used for free bending and is selected through the "angle selection" parameter when programming angles.
Y-axis (bending position) The Y-axis position required for this bend. This parameter only appears when absolute value programming is selected. It also appears when the bend mode is set to bottom press or edge flip. Variable point This point is where the Y-axis transitions from fast down to tool feed. The programming value corresponds to the distance from the variable speed point above the workpiece. By default, the variable speed point value is directly referenced from the lower die parameters. Whether this parameter is displayed depends on the machine tool setting. Distance traveled This parameter affects the opening gap between the upper and lower dies after bending. A positive value indicates an opening above the speed change point, while a negative value indicates an opening below the speed change point. If you want to reduce product operation time, you can set a smaller positive value or a negative value.
6.2.2 Strength tonnage The biggest bending pressure in the construction phase (automatic calculation) hold time The duration of the lower dead point Discharge distance The pressure relief distance after the bending is finished. The discharge distance can be set to a specific point in the working cycle. The standard discharge distance is calculated and this value is the minimum requirement.
6.2.3 Speed Bending radius Speed of work, bending speed when slow, programmable Deceleration velocity Unloading speed is the speed of the slider during unloading, which can be programmed
6.2.4 Product information thickness Thickness material
of
folded
sheet
The type of material used in bent products
6.2.5 Moulding The configured dies will be displayed and can be modified in the die Settings menu. If needed, different dies can be selected for each step of bending. patrix The name (ID) of the selected upper mold can be changed by clicking change mold, or the mold can be modified or selected from the upper mold library. mold unloading The name (ID) of the selected upper mold can be changed by clicking change mold, or the mold can be modified or selected from the lower mold library.
6.2.6. Auxiliary shafts accessory shaft The position of the selected axis make a concession The selected axis is the yielding distance of the current work step. When the slider presses down on the plate, the rear material yield begins.
Wait-and-see Whether the rear stopper makes the slider stop to wait for the completion of the retreat before continuing to bend Position of the stop Step selection at the barrier
6.3. Edit/Browse Mode 6.3.1 Full bending When all bends are selected, all bending steps are displayed in a single window.
In this interface, the entire CNC program can be edited. In the table, all step parameters can be edited. Steps can be exchanged, moved, added and deleted. Effective columns can be moved by moving your finger or clicking function key Inserting a bend Insert a new step into an existing one. After confirmation, a copy of the current step will be inserted before the current one. Up Down Down Move forward or backward to change the pace of work. duplicate Copy the currently selected step
duplicatr field You can assign the modified data to all the steps in the program Bending process link The bending step link can set the number of steps (number of repetitions) to be linked and the position offset of the rear stop (X compensation). The corresponding compensation can be positive or negative.
6.3.2 Large arc bending From a simple digital program, a single step bending process can be modified to a large arc bending.
When a large arc bend is selected in the full list of bends, a pop-up window will display the parameters to be programmed: orthodrome Invalid Use of the arc bending function Enable large arcs to be obtained by free bending in multiple steps angle Arc Angle Angle compensation Correction of the overall arc Angle radius The radius of the programming arc arc length Post stop start positioning
Number of bending segments The large arc will be processed in several sections. The number of bending times for the arc is one more than the number of sections. The more segments there are, the higher the precision of the curved arc. The more segments there are, the smaller the lower die slot required, so as to ensure the completion of the bending. Sliced arc When products require radius bending, users can define the number of segments and customize the segmentation method. The standard approach sets the first and subsequent segment lengths as half of the intermediate segment length to achieve optimal bending results. However, selecting appropriately short segment openings for molds can be challenging. Therefore, the system automatically calculates the minimum opening dimensions required for all segments, which can be configured through this parameter. -Close (not equal in size) When this parameter is enabled, all the divided segments will be calculated as equal size When this calculation is closed, the segment will contain half the size of the segment. In this case, the process calculation detects a problem with the lower mold opening and the system asks the operator whether to recalculate according to the equal segment division.
6. automatic mode 7.1 Introduction By touching the automatic mode navigation button, you can switch to the automatic operation mode.
In automatic mode, you can start to execute the selected program, product. After entering automatic mode, you can press the start button to begin executing the program. There are two display modes: home page ：
Separate the parameters for each step All bent pages:
All bending steps are integrated on one page After pressing the start button, the automatic mode will automatically execute the program for bending operations. When a different product is selected in product mode, which has already been processed, it can immediately switch to automatic mode and start processing.
7.2 Automatic page programmable data Alignment: includes all servo axis alignment, Angle alignment (angle alignment for each process), and Overall alignment (unified alignment for all steps in the current process) Overall: shows the number of processed parts and how many times the current step needs to be recycled When you choose a different bending program each time, you must check your mold and the position of the mold on the machine tool.
7. manual mode
The manual page can be used for simple single-step bending and can be used to test bending angles There are functional buttons on the right
Click the button and a window will pop up
Selecting one of the axes allows the axis to go back to the reference point individually, or select multiple axes, or all axes at the same time. The reference point parameters are usually modified in
the axis parameters and then used later, so that the CNC system does not need to be restarted to re-reference the reference point.
Manual positioning, click will pop up window
Here, each axis can be moved manually individually. The Y-axis can be achieved by stepping the pedal, and the auxiliary axis can be controlled by the button below to control the direction and speed of the axis.
8. set up 9.1 System parameters System parameters are the basic functional parameters used with the machine tool controller
Number of axis display positions The decimal point position unit of each axis is mm language selection You can switch between different system languages: 1、 the Chinese language 2、 Arabic 3、 English 4、 Spaish 5、 French 6、 Korean 7、 Portuguese 8、 Russian 9、 Turkic 10、 Vietnamese 11、 Japanese 12、 traditional Chinese 13、 German Metric type Cut unit is displayed in mm or inch on-line mode Switch between single or dual machine linkage mode Oil pump motor type Switch the oil pump motor to a servo motor or a normal three-phase motor. When the servo motor is used, the speed of the oil pump can be controlled
Use of light screens If the machine tool is equipped with a front pressure hand light curtain protection, this function can be turned on. As long as the light curtain signal is correctly connected to the system, the machine tool action can be controlled according to the light curtain situation X-axis external dimension correction factor If the deduction of the outer size is not accurate, this parameter can be used to adjust the magnification or reduction The safety distance between the right stop and the Z axis When there is Z1 and Z2 stop finger control behind the material, the minimum distance between Z1 stop finger and Z2 stop finger is prevented from collision Pressure correction factor When the calculated pressure can not meet the actual bending requirements, the proportion of this parameter can be adjusted appropriately Concessions and corrections When the rear stop moves forward or backward, the ± height correction can be used to make the rear stop move forward or backward R-axis transition position Lift height when the R axis enters the safe distance
9.2 Material setup
Corresponding to the attribute parameters of different materials, the calibration coefficient is convenient to modify the depth calculation difference between the long and short plate bending Four materials are available by default. Click the blank area below to add new materials
9.3 Backup and recovery
Back up and restore all system parameters, and restore the system to factory Settings
9.4 System information
The system information page displays the version of the system, the time when the system was used, and features such as product upgrades
9. machine tool 10.1 Upper mold
This is the upper model library, where you can see all the stored upper models, and you can add or delete them Newly built platform
number Naming the mold appearance Standard, flanging die, free + flanging, large radius die
Standard module
You can select the type of standard mold and set some basic parameters. After determining, you can enter the mold drawing page
According to the annotated size of the left example figure, modify the parameters on the right side accordingly to get the corresponding shape of the mold
Flip-fit mold
A flipping mold is a mold that is pressed flat Freedom + Flipping
A mold with a free bending angle and a flattening function
10.2 Lower die
This is the lower mold library, where you can see all the stored lower molds, and you can add or delete them New lower mold
number Naming the mold appearance You can choose standard, folded edge, inner edge, free + folded edge V
Standard mold
After editing the basic parameters, click OK to enter the mold drawing page
Referring to the left mold figure and the corresponding size annotation, edit the right data to get the corresponding mold figure