Kyocera - Каталог Токарный инструмент 2016 ENG

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                BACK TURNING TOOLHOLDERS [TKFB INSERT]

                 Edge Tips Details and Selection Guide                                                                                                                 H ow to Select

                 C utting Edge Shape

                For Small D.O.C.                          For General Purpose                                For Large D.O.C.

                                                                                                                      0.150”

                0.059”                                      0.110”

                S                                                                                                                                                                                           For Small D.O.C.
                                         (0.102”)                                                                                                                                                           TKFB12R15..
                                                                         S
                                                                                                   (0.181”)

                                                                                                                                  S
                                                                                                                                                             (0.248”)

                   Part Number      Cutting Edge     Part Number                               Cutting Edge     Part Number  Cutting Edge                                                                   For General Purpose
                                        Length                                                     Length                        Length                                                                     TKFB12R28..
                TKFB12R15..                       TKFB12R28..                                                TKFB16R38..
                        -                S        TKFB12L28..                                       S        TKFB16L38..          S
                                       0.083"                                                     0.165"                        0.228"
                                                                                                  0.173"                        0.244"
                                          -

                For small diameter
                workpieces or short length
   SMALL TOOLS                                    For general purpose                                        D.O.C. per pass is large.                                 In case D.O.C. is same, if insert with narrower edge width is
                                                  Good chip control                                                                                                    used, overhang length from guide bushing is shorter, which
E               Minimum overhang length of                                                                                                                             enables better stability due to less workpiece vibration.
                toolholder, stable machining

                 Choosing Hand of Back Turning Toolholder                                                                                                             High Precision Cutting

                (R) Right-hand                                                                 Cutting close to guide bushing is possible
                                                                                               Since TKFB12R15005M has a narrow cutting edge (width=0.059"), cutting close to guide bushing is
                                              Guide Bush                                       possible
                                                                                               Good for small parts and high precision cutting

                (L) Left-hand                       Even if burrs occur, they will not         Cutting with distance from guide bushing
                                                    return into the guide bush.                Good chip control due to large space between the guide bushing and the tool.
                                                                                               How to improve chip control for roughing to finishing
                                                                                        Burrs
                                                                                                 In case of using a left-hand toolholder in finishing, the burred portions of workpiece do not return into
                                            Guide Bush                                           the guide bushing, which enables stability of external diameter.
                                                                                                 Also, a Left-hand toolholder prevents wear of guide bushing due to chip biting.

                 Workpiece Material Motion & How to Select Hand of Tool

                 W hen Roughing, Medium, & Finishing

                                                  Roughing                                                   Workpiece position after roughing                                                   Finishing

                                                            Burrs                                                            Burrs

                (R) Right-hand

                                              Guide bush

                                                                    Burrs                                                    Burrs
                                            Guide bush
                (L) Left-hand

   E14          Good dimensional accuracy: If a Left-hand toolholder is used, burrs on workpiecekgyenoecraetread@durkinygorcouegrhain-gtodoolsno.rtudamage the guide bushing during finishing.
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