Document Type and Number:
Japanese Patent JPH027917
Kind Code:
U
Abstract:
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.
Application Number:
JP7313589U
Publication Date:
January 18, 1990
Filing Date:
June 23, 1989
Export Citation:
International Classes:
B23D77/02; B23D77/00; (IPC1-7): B23D77/00
Domestic Patent References:
| JPS54126192U | 1979-09-03 | |||
| JPS5775930U | 1982-05-11 |
Next Patent: INSTANTANEOUS HEATER