Tapping machine in the process of tapping problems

Engaged in automatic tapping industry for a long time, especially summed up some tapping machine in the process of tapping often encountered problems, hope to help you, you are also welcome to put forward different opinions

Tap break

The diameter of the bottom hole of the thread is small, which causes chip breaking tap.

When tapping blind hole thread, the depth of drilling is not enough;

The cutting speed is too high and too fast when tapping;

Tapping tap and thread bottom hole is not coaxial;

The selection of tap grinding parameters is not appropriate.

The hardness of the workpiece is unstable;

Tap teeth cracked

Tap Angle selection is too large;

The cutting thickness of each tap tooth is too large;

The quenching hardness of the tap is too high.

Tap wears too fast

High cutting speed when tapping;

Tap grinding parameter selection is not appropriate;

Improper selection of cutting fluid, cutting fluid is not sufficient;

Workpiece material hardness is too high;

When the tap is grinding, it burns.

Thread middle diameter is too large

Improper selection of middle diameter precision grade of tap:

Cutting selection is not reasonable;

High cutting speed of tapping thread;

The coaxiality difference between tap and workpiece thread bottom hole;

The parameter selection of tap grinding is not appropriate;

Burr is produced in the grinding tap, and the cutting length of the tap is too short.

The thread middle diameter is too small

Improper selection of the precision grade of the middle diameter of the tap;

Tap grinding parameter selection is not reasonable, tap wear;

Improper cutting fluid selection.

The thread surface roughness is too high

The grinding parameters of tap are not suitable.

Workpiece material hardness is too low;

Tap grinding quality is not good;

Cutting fluid selection is not reasonable;

High cutting speed when tapping;