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Technology >>Trouble Shoot

Trouble Shoot

In this section, end milling problems are addressed with potential solutions listed below. Choose from the following problems to know the cause and solution. And, remember, on-site technical support from our application specialists is only a phone call away!

Problem	Cause	Solution	Problem	Cause	Solution
Chipping	Feed too fast. Loose tool. Loose workpiece. Tool not rigid enough.	Reduce feed rate. Tighten screws. Tighten clamps. Try shorter length end mill.	Short Tool Life (Dull Teeth)	Cutting friction too great. Improper cutting angle.	Regrind more frequently. Adjust primary clearance angle.
Rapid Wear	Speed too fast. Hard metal. Feed rate too slow. Improper cutting angle. Primary relief angle too small.	Use slower speed. Add coating. Increase feed rate. Adjust cutting angle. Use larger relief angle.	Chip Packing	Cutting amount too great. Not enough chip room. Insufficient coolant.	Modify feed or speed rates. Use different end mill. Use additional coolant. Use air flow.
Breakage	Feed rate too fast. Cutting amount too large. Flute length too long. Too much wear.	Decrease feed rate. Take smaller cut per tooth. Try shorter flute length. Regrind sooner.	Rough Surface Finish	Feed rate too fast. Speed rate too slow. Too much wear. No end tooth concavity	Decrease feed rate. Increase feed rate. Regrind sooner. Add more dish to bottom teeth.
Chattering	Feed and speed too fast. Machine and holder not rigid enough. Relief angle too great. Workpiece too loose. Cut too deep. Flute length too long.	Adjust feed and speed rates. Use appropriate machine or holder. Use smaller relief angle. Refixture part. Use shallower cut. Try shorter flute length.	Burring	Primary relief wearing. Improper cutting angle.	Regrind more frequently. Adjust cutting angle.