Page 22 - CBN_2018
P. 22

ISCAR PCBN Edge Preparation            Edge Prep     Application        Edge Instruction


       PCBN INSERTS   Description                     Honing/ T-Land              Honing helps strengthen the
                      PCBN Edge
                                    Edge Prep Type



                                                                                  edge, protecting the edge line
                                                                                  from chipping and fracturing.
                                                       0.03-0.04(mm)
                                                                                  Carefully applied, it can bring
                          H/E
                                                                                  benefits when special surface
                                                                                  finish or special tolerances is
                                                                                  required.


                                                                                  Small chamfer that strengthens
                                                                                  the cutting edge. Recommended
                    PCBN edge preparation  for hardened steel
                                                                                  for continuous cut or when lower
                           F                            0.13mmX15°                cutting forces are required. Feed
                                                                                  rates must be greater then the
                                                                                  hone size to allow actual cutting
                                                                                  action and prevent rubbing.

                                                                                  Medium chamfer that strengthens
                                                                                  the cutting edge. First choice for
                                                                                  PCBN inserts. Recommended
                           M                            0.13mmX25°                for continuous cut up to light
                                                                                  interrupted cut. Feed rates must
                                                                                  be greater then the hone size to
                                                                                  allow actual cutting action and
                                                                                  prevent rubbing.




                                                                                  Chamfer without honing.
                           T                            0.14mmX20°                Recommended for continuous
                                                                                  and light interrupted cut.





                                                                                  Big chamfer that gives very strong
                                                                                  cutting edge. Recommended
                                                                                  for interrupted cut and unstable
                           R                            0.13mmX35°                machine conditions. Feed rates
                                                                                  must be greater then the hone
                                                                                  size to allow actual cutting action
                                                                                  and prevent rubbing.


                    Continuous cut         Light interrupted       Medium           Heavy interrupted

















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