STUDIES ON THE CUTTING OF ROCK BY ROTARY CUTTERS PART 1: ROCK CUTTING BY DISC CUTTERS

IN TESTS TO DETERMINE ROCK CUTTING RESISTANCE USING DISC CUTTERS, STRAIGHT CUTS WERE MADE ON SMOOTH ROCK SURFACES; THE DISTANCE BETWEEN ADJACENT CUTS BEING KEPT SUFFICIENTLY LARGE SO THAT NO INTERACTION OCCURRED. THE NORMAL AND TANGENTIAL COMPONENTS OF THE CUTTING RESISTANCE WAS MEASURED. EXPERIMENTAL RESULTS SHOW THAT THE CUTTING RESISTANCE INCREASES WITH THE DEPTH OF CUT, THE COMPRESSIVE STRENGTH OF THE ROCK AND THE CUTTING ANGLE OF THE DISC CUTTER. THE TANGENTIAL COMPONENT INCREASES MORE DRASTICALLY WITH THE DEPTH OF THE GROOVE THAN THE NORMAL COMPONENT. IT IS EMPHASISED THAT IN AN ACTUAL ROCK BORING OPERATION IN WHICH A CUTTER HEAD HAVING A SERIES OF DISC CUTTERS IS USED, THE APPLICATION OF INCREASED TORQUE TO THE CUTTER HEAD IS AN IMPORTANT FACTOR FOR INCREASING THE RATE OF PENETRATION. /TRRL/

  • Availability:
  • Authors:
    • Takaoka, S
    • Hayamizu, S
    • Misawa, S
  • Publication Date: 1973-3-4

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Filing Info

  • Accession Number: 00230480
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: May 7 1974 12:00AM