Page 184 - ISCAR(HOLE_MAKING_CATALOG_65)
P. 184

USER GUIDE
      SOLID CARBIDE DRILLS



          Regrinding Instructions

              Regrinding Instructions for AH Geometry          Regrinding Instructions for 3 Flute SCCD Drills
              For each grinding operation, rotate the drill    For each grinding operation, rotate the drill
              180° and repeat the grinding procedure.          180° and repeat the grinding procedure.
               1 Primary Clearance                              1 Primary Clearance
                                                                                                       DAT
                                                                             D
                                                                             DAT
                                                                             AT
                                                                                         20°
                                                                                       10˚

                                                                                              0.02  Shank
               2  Secondary Clearance
                                                                2   Secondary Clearance
                                                                            DAT                        DAT

                                                                                      20°
                                                                                      20°
                                                                                     25°
                                                                                     25°
               3 Chisel
                                                                3 Grind chisel (Thinning)

                                                                                                       35°
                                                                                      30°
                                                                                   C
                                                                         40°
               4 Edge Preparation
                                                                                              Ø0.25- 0.55 mm
                                                                                       C         D range
                                                                                     0.3-0.4    4.00-8.00
                                                                                     0.5-0.6    8.01-12.00

                                                                4 Edge Preparation (Honing)
                                                                                        DAT         R
              Grinding Wheel Recommended Specifications:                             A
            1  Diameter grinding wheel: GA2                                          A
            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%                                               R        D Range
                                                                                   0.035-0.045  4.00-6.00
                                                                                   0.045-0.055  6.01-12.00

                                                               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



















   182    ISCAR
   179   180   181   182   183   184   185   186   187   188   189