FAQs

FAQ

Ttoubles-Ooting For End Meill Operation

Vibrating knife during cutting?

cause

The speed is too fast.
The feed rate is too fast.
The effective length exceeds the need and the amount of protrusion is too long.
The workpiece clamping force is insufficient.
The cutting edge wear is too large. Tool yaw accuracy is insufficient.

Solution

Reduce the speed.
Reduce the feed rate.
Adjust to the shortest effective length.
It is indeed fixed to machine the workpiece.
Use a new tool or re-grind.
Adjust tool yaw accuracy.

Breaking during cutting?

Cause

The depth of cut is too much.
Cutting is blocked.
There is too much feed per blade.
The cutting edge wear is too large.

Solution

Reduce the amount of depth of cut.
Adjust the direction of the coolant alignment so that the chips are discharged smoothly.
Reduce the feed per blade.
Use a new tool or re-grind.           

Crushing during cutting(small loss)?

Cause

The depth of cut is too much.
The feed rate is too fast.
The workpiece clamping force is insufficient.
The speed is too fast.
The effective length exceeds the need and the amount of protrusion is too long.
The cutting edge wear is too large. Produces built-up edge.
Cutting is the damage caused by quenching.

Abnormal wear of the cutting edge?

cause

The speed is too fast.
The feed rate is too slow.

Solution

Reduce the speed.
Increase the feed rate.

Cutting blockage?

cause

 The chip removal is not smooth.
The feed rate is too fast.
The depth of cut is too much.
Use too many tool edges.
The cutting edge wear is too large.

Solution

Adjust the direction of the coolant alignment so that the chips are discharged smoothly.
Reduce the feed rate.
Reduce the amount of depth of cut. Use a tool with a small number of blades.
Use a new tool or re-grind.

Cutting is dumping?

cause

The feed rate is too fast.
The depth of cut is too much.
The effective length exceeds the need and the amount of protrusion is too long.
Use a tool with a strong helix angle.

Solution

Reduce the feed rate.
Reduce the amount of depth of cut.
Adjust to the shortest effective length and extension.
Use a tool with a weak helix angle.

Finished burr?

cause

The cutting edge wear is too large.
Use a tool with a weak helix angle.
The depth of cut is too much.

Solution

Need new tools or regrind.
Use a tool with a strong helix angle.
Reduce the amount of depth of cut.

Finished surface roughness is poor?

cause

The cutting edge wear is too large. Snap into the chip.
The feed rate is too fast.
The effective length is beyond the need and the extension is too long.
The speed is too slow.
The margin of processing is not uniform.
Tool yaw accuracy is insufficient.

Solution

Need new tools or regrind.
The coolant is removed from the cutting position using the coolant. Reduce the feed rate.
Adjust to the shortest effective length and extension.
Increase the speed.
Check if the remaining amount after processing is uniform.
Adjust tool yaw accuracy.

Poor processing accuracy?

cause

 The main expansion amount is unstable.
The remaining amount after processing is not uniform.
The feed rate is too fast.
Tool yaw accuracy is insufficient.

Solution

The machine is warmed up at the used speed, and the amount of expansion and contraction of the spindle is stabilized before processing.
Check if the remaining amount after processing is uniform.
Reduce the feed rate.
Adjust tool yaw accuracy.

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