Common problem solution in tap tapping

problem

the reason

solution

Large internal thread

Tap selection is incorrect

Select the correct tap according to the processing conditions

Bottom hole eccentricity

Use floating tapping / improve bottom hole

Axial feed unevenness

Switch to floating tapping / improve machine tools

Tap tolerance selection error

Choosing the right tap tolerance

Chip clogging

Reduce the number of taps and chip pockets, and expand the space of the chip pockets;

Increase and deepen the bottom hole

Cutting speed is too high

Reduce cutting speed

Small internal thread

Tap selection is incorrect

Select the correct tap according to the processing conditions

Machine tool spindle rigidity is not good

Switch to floating tapping

Tap tolerance selection error

Choosing the right tap tolerance

Internal thread surface roughness is high

Tap selection is incorrect

Select the correct tap according to the processing conditions

Cutting speed is too high

Reduce cutting speed

Cutting cone length is not enough

Increase the length of the cutting cone

Poor chip removal

Select the correct tap according to the processing conditions

Bottom hole diameter is too small

Select the bottom hole diameter according to the corresponding standard

Cold welding

Improve cooling and lubrication conditions

Tap break when machining or retracting

Tap selection is incorrect

Select the correct tap according to the processing conditions

Tapping wire tap hits the bottom of the hole

Check the bottom hole depth

Excessive cutting torque

Shorten the length of the tapping;

Using spiral groove tapping

Bottom hole is too small

Select the bottom hole diameter according to the corresponding standard