Knurling

Knurling refers to a technique of machining, be embossed in the pattern in workpieces. For example, the handles or grips of Micrometers are often knurled to make them more grip than smooth surfaces.

A further application is to generate a serrated profile for a shaft-hub connection, for example for fixing a rotor stack on a shaft to transmit higher torque than a shrink-fit connection or screw.

When knurling distinction is made between the non-cutting Knurling and the cutting knurling. Depending on the process is pushed the profile with knurled wheels or milled to a Rändelfräse. On CNC lathes with driven tools, special knurling tools can be used to avoid re-chucking on other machines. Since the cutting forces during milling to be lower, it is especially used with thin workpieces or use on machining centers.

There are knurled in the following versions:

  • RAA: knurled with axially parallel channels
  • RBL: left knurl
  • RBR: Rechtsrändel
  • RGE: Left - Rechtsrändel, tips increased ( fish skin)
  • Deepened left Rechtsrändel, tips: RGV
  • Increased cross knurl, tips: RKE
  • RKV: knurled, lace deepen

The profile angle is 90 °, in special cases, 105 °.

Name: eg: knurled RAA 08-105: knurled with axially parallel grooves, pitch 0.8 mm and profile angle 105 °

Standardize

  • Currently: DIN 8583-5, DIN 82, DIN 403
  • . Switzerland: VSM 34060 conversion to DIN 82 " cord VSM 34060 - x, y " matches " RGE - x, y DIN 82 " and " knurled VSM 34060 - x, y " matches " RAA - x, y DIN 82 "
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