Single bit reamer with improved guide members

Details Single bit reamer with improved guide members Single bit reamer with improved guide members

B - Operations, Transporting

23

D

77/38

B23D 75/00 (2006.01) B23D 77/02 (2006.01)

Patent

CA 1220366

Abstract of the Disclosure The operating life of the two guide members in a single bit reamer is increased by shaping the peripheral surface of the guide members with a radius of curvature less than the radius of the bore being machined. Contact between each guide member and the bore wall takes place only along a central quest area extending in the lengthwise direction of each guide member. This allows coating of the peripheral surfaces of the guide members with a hard, wear resistant material. Further, the guide members may be fastened to the cutter head by means of a screw situated in a groove extending in the tangential direction along the peripheral surface of each guide member. This increases the lubricating and cooling effect.

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