Page 185 - ISCAR(HOLE_MAKING_CATALOG_65)
P. 185

USER GUIDE







              Regrinding Instructions for SCDT                 GYRO Auxiliary Devices for Lathe Machines
              Pre-Thread Solid Drills                          Designed to Correct Misalignment
              For each grinding operation, rotate the drill    on Stationary Operation
              180° and repeat the grinding procedure.
                                                               Drills can be used on sloped surfaces up to 6°.        SOLID CARBIDE DRILLS
                                                               When drilling sloped surfaces of more than 6°,
                                                               reduce feed by 30-50% during penetration of up
                               45°                             to 5 mm depth, or use a spot or pre-hole drill to
                                        7° spiral relief       avoid drill deviation or poor drill performance.

               1 Primary Clearance
                                                                          T.I.R. max. 0.02







                              a°   D Range
                              7     0.8-6.0
                             10      >6.1
                                                                             Angular Adj. 1°
               2  Secondary Clearance

                                                                                  Radial Adj. D2.0






               3 Chisel









                                          a°    D Range
                                          100    3.0-4.8
                                          105    4.9-10
                                          95     10.1-20

               4 Edge Preparation








                                             R    D Range
                                            0.02  0.8-6.0
                                            0.03  6.1-18.0
                                            0.04  18.1>UP
              Grinding Wheel Recommended Specifications:
            1  Diameter grinding wheel: GA2
            2  Grinding wheel bond: synthetic resin
            3  Grit size: 325/400 mesh (45/38µ)
                                              3
            4  Diamond concentration: C-75 (3.3 carat/cm )
            5  Cutting fluid emulsion 3%






                                                                                                                   183
   180   181   182   183   184   185   186   187   188   189   190