Mitsubishi MWE manual

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Table of contents for the manual

  • Page 1

    April 30, 2009 MWE / MWS type REGRINDING MANUAL FOR SOLID CARBIDE DRILL MITSUBISHI MA TERIALS CORPORA TION CARBIDE & T OOLS DIVISION[...]

  • Page 2

     Checking conditions of the cutting edge • Check wear conditions of and damage to the cutting edge. • If there is serious damage such as fracture on t he cutting edge, grind the edg e until the damage is all gone.  Grinding first r elief face • Install the drill by using collet chuck. As shown in fig.1 , set the drill phase in order tha[...]

  • Page 3

    • Grind until lip height difference (axial runout of front cutting edge) is 0.02mm or less.  Grinding second r elief face • After grinding first relief face, grind second relief face. • As shown in fig.2 of the previous section, keep rotation angle of the drill ( work head) at 20°. • As shown in fig.4 , set inclination angle of the dril[...]

  • Page 4

     Grinding thinning face • After grinding second relief face, grind thinning face. Type of the thinning is X-thinning . • First, set the work head horizontal so that the center of the drill will be horizontal. Drill rotation angle is 0°. Set the direction of table oscillation parallel with the center line of the drill. • As shown in fig.7 [...]

  • Page 5

    • Adjust the wheel position while grinding so that the measurem ents of the thinning (X part, Y part) will be the same as those of fig.10 . (Dotted lines show the final positions. • (Grinding tip) To make the task easy, grind the two cutting edges alternatel y, using a mirror to check the configuration while grinding.  Honing • After grind[...]

  • Page 6

    Copyright © 2009 MITSUBISHI MA TERIALS CORPORA TION. All rights reserved This is the end of regrindi ng. Please ascertain that all the following sp ecifica tions are fulfilled befor e using WSTAR drill again. • Lip height difference (axial runout of front cutting edge) < 0.02mm • There is no damage left on the cutting edge. • Appropriate [...]