I am currently in a lathe machinery factory, factory of broaching machine really curious.It is a hole with the kind of cylindrical broach broaching machine, after a day's work is down to a special knife Seurat with special machine tool grinding.Would you please tell me that the diameter of the broach is not smaller since he repaired it? Wouldn't it be possible to process the required size?
Hello, this is the general grinding grinding angle in the axial size is 2 off the wire, so allow grinding range or to ensure workpiece size.
The required size is guaranteed by the calibration teeth. Usually, the calibration teeth are not repaired or only very few allowances are made, and not all the calibration teeth need to be repaired at any time.
Repair is the front edge of the broach, the blade has a wide blade. After grinding, only the edges become narrower and have nothing to do with the outer circle. Unless the grinding too much, will affect the outer diameter of the cutter tooth. However, the last 4-5 teeth of the broach are the correcting teeth for correcting the outer circle, so the sharpening broach has no influence on the final processing size.
