Maker : Guhring

Troubleshooting : 고장탐구, 장애발견,고장진단, 트러블 슈팅 신뢰성 관리에 있어서는 고장의 진단을 말하지만 일반적으로 고장이나 트러블의 원인탐구활동을 가리킨다.

Cutting edge build-up

• Low cutting speed
  ⇒ Increase cutting speed
• Excessive honing of cutting lip
  ⇒ Reduce cutting lip honing
• Bright finish cutting lip
  ⇒ Have tool coated

Crumbling of outer corners

• Non-rigid conditions, insufficient workpiece clamping
  ⇒ Rigid clamping of workpiece
• Excessive deviation from concentricity
  ⇒ Check and correct concentricity if possible
• Interrupted cut
  ⇒ Reduce feed

Heavy wear and tear at flank

• Cutting speed too high
  ⇒ Decrease cutting speed
• Feed too low
  ⇒ Increase feed
• Clearance angle too small
  ⇒ Increase clearance angle

Crumbling on cutting lips

• Non-rigid conditions, insufficient workpiece clamping
  ⇒ Rigid clamping of workpiece
• Interrupted cut
  ⇒ Reduce feed
• Maximum wear and tear values have been exceeded
  ⇒ Reduce tool change intervals
• Wrong tool type
  ⇒ Apply suitable tool (see application recommendations)

Land wear

• Non-rigid conditions, insufficient workpiece clamping
  ⇒ Rigid clamping of workpiece
• Large deviation from concentricity
  ⇒ Check and correct concentricity if possible
• Back taper too small
  ⇒ Increase back taper
• Wrong coolant/lubrication (oil), soluble oil too thin
  ⇒ Thicken soluble iol or use neat oil

Scoring on tool body

• Non-rigid conditions, insufficient workpiece clamping
  ⇒ Rigid clamping of workpiece
• Large deviation from concentricity
  ⇒ Check and correct concentricity if possible
• Interrupted cut
  ⇒ Reduce feed
• Abrasive workpiece material
  ⇒ Thicken soluble oil or use neat oil

Heavy chisel edge wear and tear

• Cutting speed too low
  ⇒ Increase cutting speed
• Feed too high
  ⇒ Decrease feed
• Excessive honing of cutting lip
  ⇒ Reduce cutting lip honing

Crumbling at intersection of web thinning and cutting lip

• Clearance angle too small
  ⇒ Increase clearance angle
• Excessive honing of cutting lip
  ⇒ Reduce cutting lip honing
• Wrong tool type
  ⇒ Apply suitable tool

Plastic deformation of outer corner

• Cutting speed too high
  ⇒ Decrease cutting speed
• Incorrect or no honing at corner
  ⇒ Correct honing
• Incorrect or no corner chamfer
  ⇒ Apply correct corner chamfer

Misalignment, axis shifting

• Non-rigid conditions, insufficient workpiece clamping
  ⇒ Rigid clamping of workpiece
• Excessive deviation from concentricity
  ⇒ Check and correct concentricity, if possible
• Spotting area transverse
  ⇒ Use twin-fluted milling cutter for spotting
• Chisel edge too large
  ⇒ Reduce chisel edge

Heavy burring on breakthrough

• Feed too high
  ⇒ Decrease feed
• Maximum wear and tear values have been exceeded
  ⇒ Reduce tool change intervals
• Excessive honing of cutting lip
  ⇒ Reduce cutting lip honing

Unsatisfactory surface quality

• Non-rigid conditions, insufficient workpiece clamping
  ⇒ Rigid clamping of workpiece
• Excessive deviation from concentricity
  ⇒ Check and correct concentricity, if possible
• Insufficient coolant
  ⇒ Increase coolant (volume, pressure)