BIG BORE CNC & MANUAL OIL COUNTRY LATHES
APPLICATIONS – ENERGY INDUSTRY Oil, Gas and Forging Companies Long Cylindrical Parts
AMERICAN PETROLEUM INSTITUTE – API PITCH – 2, 3, 4, 5, 6, 8 and 10 Taper = ¾” per foot Designed to support the weight of the pipe in the hole Drill pipe makes up the majority of the drill string back up to the surface.
DRILL PIPEEach drill pipe comprises a long tubular section with a specified O.D. O.D. Sizes – 4-1/2”, 5-1/2”, 6-5/8”, 7”, 8-5/8”, 9-5/8”, 10-3/4” and 13-3/8” Pipe is thread on each end only, no other work is done on the pipe The bigger the bore – the slower the spindle RPM Small diameter pipe machined on large bore machines is very inefficient
GANESH MACHINES FOR BIG BORE APPLICATIONSGTW-30 Series Between Centers – 60” to 160” Rear Chuck Mount included 6-5/8” Spindle Bore Standard (Optional 10”)
GTW-34/38/42 Series Rear chuck mount included
6-5/8” Spindle Bore Standard (Optional 10.04” & 14.37”) GTD-44 Series Rear chuck mount is optional 6” Spindle Bore (Actually 152mm which is 5.98” (Optional 9” & 12”) GTW-5240 Rear chuck mount included 10.04” Spindle Bore Standard (Optional 14.37”)
8-STATION VERTICAL TURRETGreat for threading pipe because the tool is closer to the centerline
More rigid Less vibration Heavier cuts Test Cuts – ¼” depth of cut, 400-SFM, 0.015” per/rev feed, 4140 heat treated material 4-way & 6-way Horizontal Turrets are optional 12-Station Turret optional
BORING BAR HOLDER OPTION 3” to 6” Boring Bar Holder 3 x Diameter for high-speed steel bars = length of bar (1.5” holder on turret can handle 4.5” bar length) The cross slide mounted holder can handle longer lengths 9” to 18” nominal Special Device or Carbide Boring Bars can have lengths up to 10 x the diameter
WORKHOLDING OPTIONS Hydraulic Chucks with actuator (can’t use rear chuck mount) Manual Chucks (3-Jaw and 4-Jaw) Air Chucks
POINTS TO WATCH FOR WHEN SELLING A CNC OR MANUAL BIG BORE LATHE Make sure the spindle bore is large enough for the part Nominal pipe sizes vary in diameter 6” pipe might not fit in a 6” spindle bore Make sure the Steady Rest is large enough to support the part Our 24” steady rest is 600mm (23.64”) Manual Lathes don’t come with tool holding T-Slotted, Dorian, Quick-Change Wedge GTD-30 comes with a 4-way tool post, not a T-Slot For more information please visit our website at http://www.ganeshmachinery.com.
Published on Jan 10, 2014
http://www.ganeshmachinery.com | This PowerPoint presentation covers various aspects of manual & CNC big bore/oil country lathes, including...