Page 423 - ISCAR(TURNING-CATALOG-42-2022)
P. 423

USER GUIDE




          Machining Tips

              Insert Width                                      Insert Radius                                         GROOVE-TURN
              Generally, the insert width should be as wide as   Choosing the insert radius for a particular application is a
              possible as it contributes to its strength. However,   combination of many factors.
              there are additional considerations that should be taken   The corner radius of the groove-turn insert
              into account in order to choose the correct width:  influences the product shape and tool life.
            •  Workpiece size and clamping stability: A larger   •  A larger radius in turning operations
              width means higher cutting forces during          normally improves surface quality.
              grooving. A width that is too large can cause   •  An insert with a larger radius has a better distribution
              deformation of the workpiece and/or vibration.    of the cutting load and of the generated heat.
            •  When using a larger width, make sure your        It is stronger and ensures longer tool life.
              machine has enough power. (see page 426)        •  Small radii on grip inserts result in increased side
            •  Machining strategy: Grooving in a correct sequence   forces and side deflection, preventing instability,
              should also affect your choice. (see page 422)    especially with small depths of cut and feed.
            •  Required overhang: A larger tool overhang will   •  The best radius to use is basically determined by
              require a wider insert to maintain stability.     the geometry and dimensions of the workpiece.
            •  The larger the insert, the wider the upper and   The more securely the workpiece is fastened in
              lower jaws can be, therefore, higher forces are   the machine tool, the larger the radius may be.
              required to effect the necessary side deflection.  •  When the ratio of a workpiece’s length
            •  If the depth of cut is small, the width of the   compared to its diameter is large, inserts
              insert should be proportionately smaller to       with smaller radii will prevent chatter.
              guarantee the required deflection.              •  A larger corner radius enables
                                                                machining at a larger feed rate.
                                                              •  In profiling operations, inserts with larger
                                                                corner radii or full radii are required.












                                                                                                                      TEXT

















                  Efficient use of the insert’s corners:
                  Always try to evenly split machining between the two corners.
                  This optimization will increase the insert’s life.






















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