User Manual

ManualsBrandsRedLine Tools ManualsBall Nose End MillsRedLine Tools - .0100 Single End Ball Carbide End Mill, Amorphous Diamond Coated Coated .0150 Flute Length, 3 Flute, 30° Helix Angle, 2.5000 OAL - RET8305

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Endmills - Technical Info

Endmills

Tech Info -

Endmills Trouble Shooting Guide

Problem Cause Solution

Breakage

• Feed rate too aggressive

• D.O.C. too aggressive

• Excessive tool overhang

• Chip packing

• Excessive wear

• Reduce feed rate

• Reduce axial and/or radial D.O.C.

• Hold shank deeper, use shorter endmill

• Adjust speed and/or feed, select endmill with fewe

flutes, increase coolant pressure and/or air

• Re-grind tool sooner

Burs

• Incorrect speed & feed

• Helix angle is incorrect for application

• Primary cutting edge(s) are dull

• Adjust speed & feed

• Change to correct helix angle, use climb milling

• Re-grind tool sooner

Chattering

• Speed and/or feed too aggressive

• Tool rigidity

• Work-piece rigidity

• Machine tool rigidity

• D.O.C. too aggressive

• Wrong tool geometry

• Reduce speed and/or feed

• Change tool holder, hold shank deeper and/or use

shorter tool

• Re-fixture work-piece and/or improve setup

• Check spindle for run-out

• Reduce axial and/or radial D.O.C.

Chip Packing

• Speed and/or feed too aggressive

• Flute gullet too small for chips

• Insufficient coolant volume and/or

pressure

• Reduce speed and/or feed

• Use endmill with less flutes

• Increase coolant and/or air pressure, reposition nozzle

to point of cut

Edge Chipping

• Feed rate too aggressive

• Feed rate too aggressive on initial cut

• D.O.C. too aggressive

• Tool rigidity

• Work-piece rigidity

• Machine tool rigidity

• Reduce feed rate

• Reduce feed rate on initial pass

• Decrease axial and/or radial D.O.C.

• Change tool holder, hold shank deeper and/or use

shorter tool

• Re-fixture work-piece and/or improve setup

• Check spindle for run-out

Poor

Dimensional

Accuracy

• D.O.C. too aggressive

• Tool Rigidity

• Machine tool rigidity

• Reduce axial and/or radial D.O.C.

• Use tool with more flutes

• Check, inspect & repair machine tool, toolholder

and fixtures

Poor Finish

• Feed rate too aggressive

• Speed is too slow

• D.O.C. too aggressive

• Excessive wear

• Reduce feed rate

• Increase spindle speed (RPM)

• Reduce axial and/or radial D.O.C.

• Re-grind tool sooner