10 Tips & Tricks To Minimize Boring Issues
When boring, vibration or chatter is a persistent problem. Whether it is chatter or issues with tool life and hole precision, or anything else, boring can appear to e a challenging task. But boring shouldn’t be more difficult than any other kind of machining if the appropriate rules are followed. Let’s explain several methods for making boring an easy task, regardless of how deep the hole may be, as well as for extending tool life and improving hole accuracy. But first, let’s discuss the type of tooling materials you need for your application.
The appropriate tool materials
A boring bar’s useful range is determined by the length to diameter ratio. Also, boring bars can be created from a variety of materials, which alters the qualities of the bar.
• A typical steel boring bar’s effective length to diameter ratio is 3 to 1. Ratios of 4 to 1 or even 5 to 1 are feasible, but usually only after much experimentation.
• On the other hand, a carbide boring bar’s effective length to diameter ratio is 6 to 1. Again, experimentation opens the door to higher ratios. As a general rule, the deeper you can bore without problems, the more money you spend. A carbide bar often costs two to three times as much as a steel boring bar. Carbide is very rigid compared to steel, which is relatively flexible. Like the steel bar, the inclination to chatter is defeated by sheer stiffness.
• Finally, in the case of dampened boring bars, as the bar enters the cut, internal systems passively absorb any incoming chatter. Imagine grabbing a tuning fork, which immediately causes the fork to cease oscillating.
Similar to steel bars, the bar is fairly flexible, but rather than allowing chatter to dominate, the dampened bar absorbs it. When trying to maintain a bore tolerance, deflection will still be there, but it can be accounted for. Steel dampened bars frequently have length to diameter ratios of 10 to 1, while carbide reinforced dampened bars can achieve ratios of 14 to 1.
Tips and tricks to deal with boring issues
Here are some suggestions and techniques to help you if you are experiencing boring concerns.
1. Lower the cutting speed.
2. If possible, increase the feeding rate.
3. Increase the depth of cut to at least to the value of the tool nose radius.
4. Select a tool with a smaller nose radius.
5. Reduce the bars’ stickout.
6. Grip the bar at least four times as wide as its diameter.
7. Select the biggest bar that will fit the bore.
8. Make use of cylindrical clamping. Compare holding a weight using your complete hand (cylindrical clamping) against your fingers (set screws). One dampens vibrations and is significantly more secure than the other.
9. Use a coolant, which can easily help a chip to be efficiently sheared.
10. Ensure proper alignment. There are numerous ways to check that the bar is correctly aligned with each axis and the centreline of the component.
With the right kind of materials and the above-mentioned tips and tricks, you can resolve a number of boring issues that you may be facing. Whether it is boring heads or boring bars in Bangalore, or any other kind of boring accessory and tool, you can work with FineTech Toolings to discuss your requirements and gain access to the right tools for your application.
Website: https://finebore.com/