Title:
COMPOSITE MATERIAL MACHINING REAMER
Document Type and Number:
Japanese Patent JP2724120
Kind Code:
B2
Abstract:
PURPOSE: To provide the finished hole accuracy of the prepared hole of composite material and the accuracy of the inner peripheral finished surface and suppress the thickness of a machining affected layer, and moreover lengthen a durable life and prevent the fluffing of carbon fiber.
CONSTITUTION: A back taper part 44 extremely large with the outer diameter decreased at the rate of 0.05-0.25mm/100mm is formed continuously from a bite part 42. A margin part 38 extremely small with the width dimension W of 0.05-0.20mm is formed adjacently in the opposite direction to the rotating direction A of the main cutting edge 40a of the bite part 42, and moreover a flank relief 46 with a large angle of 20-30° is provided continuously from the margin part 38. The cutting resistance of a composite material machining reamer 10 is thereby reduced ideally. As a result of providing the flank relief 46 with a large angle of 20-30°, a space large enough to accommodate chips generated from the main cutting edge 40a is formed, so that the finished surface is not roughened by sliding motion between the chips and an inner peripheral wall caused by the entanglement of the chips.
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| WO/1992/010138 | SURGICAL INSTRUMENT |
| WO/2012/037597 | UNDERGROUND REAMER |
Inventors:
HIBI YASUHARU
HAYASHI TSUGIO
HAYASHI TSUGIO
Application Number:
JP21731294A
Publication Date:
March 09, 1998
Filing Date:
September 12, 1994
Export Citation:
Assignee:
OO ESU JII KK
International Classes:
B23D77/00; B23D77/14; (IPC1-7): B23D77/14
Domestic Patent References:
| JP2190215A | ||||
| JP1306121A |
Attorney, Agent or Firm:
Haruyuki Ikeda (2 outside)
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