Boring procedures can not just be completed on CNC turning lathe machines yet also with milling machines. We can bore holes in numerous dimensions with the monotonous tool for transforming and develop very accurate sizes. Today, we intend to discuss the problems, challenges, tips, as well as approaches of the boring process.
What is Boring Process?
Boring is machining technology of additional refining the created, cast or drilled holes that already exist in the work surface, boring can expand the hole, boost its size, boost dimensional precision, lower surface roughness as well as correct the deviation of the original opening axis. The precision, as well as precision of boring, are high, the precision of precision boring can get to IT8 ~ IT7 as well as the diameter can be controlled within 0.01 mm, the surface roughness of the general boring process is roughly between Ra 1.6 ~ 0.8 μ M.
What Problem to Carry Out Boring Procedure?
There are common troubles operators might fulfil in CNC machining services like turning, milling, boring, take note of address the trouble and also observe in time, high-quality item can also be obtained.
In the CNC boring procedure, the continual cutting is simple to cause tool wear and also damages, which additionally causes lowered dimensional accuracy of opening boring and also increases the surface area roughness. On top of that, the calibration of the fine-tuning feed system is unusual, causes modification error and variance of machining diameter and also produce top quality failing.
The machining error of dull procedure is presented in the changing of placement, form and also measurement as well as surface area high quality. The issues may create machining mistake are as adheres to:
- The length-diameter proportion of the cutter pole is also big or the overhang is also long;
- The blade material does not suit the work surface material;
- The parameter of boring is improper;
- The allocation of allowance modification is unreasonable;
- The balanced out of the first opening placement causes the regular change of the allowance;
- The worksurface product has high rigidness or low plasticity.
The machined surface of boring components shows fish scale or thread-like cutting lines.
Inappropriate procedure in readjusting the distribution feed allowance is easy to cause low accuracy.
Improper use of gauging devices and wrong measurement techniques are common quality threats in CNC boring process.
Tips and Approaches of Boring Machining
After the monotonous bar is installed, observe whether the top aeroplane of the major device edge of the dull tool is on the same straight aircraft as the feed direction of the dull device head, to guarantee the cutting edges remain in the normal machining cutting angle.
The boring tool ought to schedule with an allowance of 0.3-0.5 mm, when broadening birthed, change the allocation of rough dull ≤ 0.5 mm, to make certain that the succeeding finishing dull machining can fulfil the allowance demands.
Tips as well as precautions measures for boring
- Have a look at whether the workholding, workpiece positioning and also securing are reliable as well as steady prior to machining.
- Check out If the spindle duplicated placing accuracy and vibrant balance precision meet the demands of CNC manufacturing.
- Procedure the size of the initial opening with a calliper as well as compute the scheduled machining allocation.
- Take a look at the dynamic gravity overhang worth of dull bar throughout the trial boring process, and reasonably modify the cutting parameters to lower the impact of centrifugal cutting vibration.
- According to rough boring, semi-finish boring and also finishing boring, moderately allot the boring allocation, recommended: harsh boring- 0.5 mm, semi-finish and also finishing boring- 0.15 mm.
- Add fine dull steps for difficult-to-machine materials and high precision boring, the monotonous allowance is not less than 0.05 mm.
- In the toolset of boring bar, take notice of avoiding the impact between working component (blade as well as base) of the tool and also block, avoid tool damages or affect the machining precision due to the directing groove adjustments the monotonous device modification value.
- The boring machining procedure needs to keep one’s cool, increase lubrication to reduce cutting pressure when necessary.
- Eliminate the chip suitably as well as prevent the chips from engaged in the second cutting.
- Check the tool wear frequently as well as replace damaged cutter instantaneously, to make sure the machining high quality and accuracy of opening boring, gauge the refined opening very carefully.