Page 279 - ISCAR(HOLE_MAKING_CATALOG_65)
P. 279

USER GUIDE




          Deep Hole Drilling Systems

                    Problem                  Possible Cause                          Solution

                The drill breaks or   •  Chip evacuation problems     •  Check that the coolant passages are clear
                  insert chips                                          and that the Venturi slots are not damaged
                                •  Center misalignment of drill to workpiece  •  Check center alignment of drill to workpiece
                                                                      •  Check workpiece and drill clamping rigidity

                Poor surface finish  •  Workpiece or drill clamping rigidity problem  •  Improve workpiece or drill clamping  DEEP DRILLING - BTA SYSTEM
                                •  Inadequate coolant oil             •  Check the coolant oil and replace if necessary
                                •  Cutting speed too low              •  Increase the cutting speed

               Excessive leakage of  •  Chips block the fluid passages  •  Clear the chips
                   the coolant  •  The drill was incorrectly assembled,   •  Check all connections and the
                                  or the Venturi slots of the internal tube   direction of the internal tube
                                  are located in the wrong direction

                Insufficient coolant  •  Chips block the fluid passages  •  Clear the chips
                flow at the cutting   •  Worn bushing or sealing device  •  Check the bushing and seal
               zone, despite correct                                    and replace if necessary
                   fluid supply  •  Venturi slots are too wide (worn)  •  Replace the internal tube
                                •  Internal tube shorter than the external tube  •  Replace the internal tube to
                                                                        one with a correct length

               Chips jam in the front  •  Insufficient coolant flow   •  Adjust the fluid flow by raising the pressure;
                 end of the drill                                       check the filter and fluid quality






              Connection Adapters                               Special Heads
              Various kinds of rotating and non-rotating drill   Special form heads for trepanning or any other
              connectors are available upon request.            special contours can be produced on request.











              Oil Pressure Heads
              Oil pressure heads are available on request.






























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