Troubleshooting - Punch Broaching | Slater Tools, Your Source for Rotary Broaching and Screw Machine Tools

Troubleshooting - Punch Broaching

ISSUE
Machine is alarming / stalling

POSSIBLE CAUSES

Excessive chip accumulation
Feed rate is too slow
Too much material is being removed per pass

RECOMENDATIONS

Drill chips out part way through, then continue to desired depth
Increase feed rate
Reduce depth of cut per pass

ISSUE
There is a taper in the finished form

POSSIBLE CAUSES

Feed rate is too slow
Too little material is being removed per pass
Deflection due to setup

RECOMENDATIONS

Increase feed rate
Increase depth of cut per pass
Ensure workpiece and broach are held securely

ISSUE
Workpiece / stock is pushing back into the machine

POSSIBLE CAUSES

Workpiece not held tight
Excess pressure is created by trapped fluids/air
Excessive chip accumulation
Too much material is being removed per pass
Feed rate is too slow

RECOMENDATIONS

Use a serrated collet to hold the workpiece
Typical solutions for releasing trapped fluids/air:

Turn off coolant during broach cycle
Increase the pre-drill hole size (increase I.D.)
Use a vented broach. Slater Tools offers vented broach options.

Drill chips out part way through, then continue to desired depth
Reduce depth of cut per pass
Increase feed rate

ISSUE
Broach tool chipping / poor tool life

POSSIBLE CAUSES

Improper workpiece preparation
Too much material is being removed per pass
Material is too hard

RECOMENDATIONS

Check workpiece geometry:

Ensure there is a 45 degree lead-in chamfer
Refer to the part preparation guide

Reduce depth of cut per pass
Broach material in annealed state and/or consider upgrading material of tool

©2024 Slater Tools, Inc. All Rights Reserved | Terms | Privacy | Site Map | Contact Us