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USER GUIDE
      MULTIFUNCTION TOOLS






              User guide for DRG-MF                             User Guide for Turn-Mill Machines

              Coolant Pressure                                  Insert Positioning
            •  Apply above 6 Bar in 2.25xD tools (optimal pressure    For drilling, cutting edge should be positioned in the center
              is above 10 Bar).                                 of tool body.
              Radial Adjustment (off-center drilling)                Correct       Correct        Wrong
            •  Radial adjustment is dependent on drill diameter
                                                                  Cutting edge
                                                                   for drilling









              Optimization of Chip Shape
            •  Apply high-speed machining on low carbon steel                                  Cutting edge
            •  Produce thin chips, as most problems                                             for drilling
              are caused by thick chips                         Setup
            •  Regulate chips produced by machining
              medium-to-high carbon steel
            •  If too tight, either increase speed and reduce
              feed, or reduce speed and increase feed
            •  If too long, reduce speed and increase feed                             Ø/2
               Tool          Drill Dia.  Dmin     Dmax          Core Ø
               DRG-MF-10       10        9.82     10.60
               DRG-MF-12       12       11.82     12.60
               DRG-MF-14       14       13.80     14.60
               DRG-MF-16       16       15.76     16.50         Check formation of core and its size after drilling 3 mm to
               DRG-MF-20       20       19.80     20.60         6 mm depth. The diameter of the core should be within
               DRG-MF-25       25       24.80     25.80         0.15-0.45 mm.
               DRG-MF-32       32       31.80     33.00         Adjust Y-axis of the tool body by using the new adjustable
                                                                clamping unit (if available) or rotate the tool body 180°
              Troubleshooting                                   and secure it into a turret. Check the core again.
                                                                Important: If a core does not appear, this can cause
               Problem    Solution                              breakage of insert  vibration when drilling or turning.
                          •  Increase cutting speed
               Chipping   •  Reduce feed                        If the size of the core is over the recommended
               caused by   •  Check tool and workpiece rigidity  size, it will cause overload and vibration.
               built-up edge
                          •  Reduce tool and workpiece overhang
                          •  Reduce cutting speed
               Excessive   •  Use a harder grade (special)
               flank wear  •  Increase coolant flow             Angular error
                          •  Check cutting edge height
                          •  Reduce cutting speed
               Edge       •  Use a harder grade (special)
               deformation  •  Increase coolant flow
                          •  Reduce feed
                          •  Reduce feed
               Poor surface   •  Increase coolant flow
               quality    •  Check tool and workpiece rigidity  Warning: As the drill
                          •  Increase cutting speed             goes all the way through
                                                                a workpiece, it ejects a
                          •  Increase feed                      disc. For worker safety,
               Long chips  •  Reduce cutting speed              guards should be used.
                          •  Increase coolant flow
               Tight chips  •  Reduce feed
                          •  Check tool and workpiece rigidity
                          •  Reduce tool and workpiece overhang
                          •  Reduce cutting speed
               Vibrations  •  Increase feed
                          •  Check cutting edge height
                          •  Reduce feed and increase cutting
                            speed on very soft materials



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