CNC machine tools I use 6.5 bit drilling out is 6.7, what method can be solved?
Finish with 6 and take 6.5 of the drill. Or trim the bit edge of the drill bit slightly
Also, bit clamping and grinding will also affect the drilling size to varying degrees.Remedy is:1, the size of the hole strict requirements of the workpiece, you can drill after the hinge.2, the hole size requirements are not too strict, with 6.5 or 6.6 drill directly drilling. In mass production, the first workpiece must be measured and checked.
Hello, pore diameter of drill cutting drill drill slightly is a normal phenomenon. Because the drill bit has a certain length, and a twist, when rotating due to circumferential force will produce slightly swinging, thus affecting the processing size.
