LAPPING REAMER AND MANUFACTURING METHOD OF LAPPING REAMER

Title:

LAPPING REAMER AND MANUFACTURING METHOD OF LAPPING REAMER

Document Type and Number:

Japanese Patent JP2015085419

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a lapping reamer which has an outside diameter, an out-of-roundness and straightness as accurate as a pin gauge, and which is made of cemented carbide, and a method of manufacturing the lapping reamer.SOLUTION: A lapping reamer includes: a cutting part with a cutting edge at the tip; a polishing part neighboring the rear portion of the cutting part, to polish an internal surface of a prepared hole; a reduced-diameter part neighboring the rear portion of the polishing part; and a holding part neighboring the rear portion of the reduced-diameter part. In addition, a surface of the polishing part has knurl grooves consisting of many crossing streaks of clockwise spiral grooves and counterclockwise spiral grooves. This invention also provides a manufacturing method of the lapping reamer.

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Inventors:

TATENO YOSHINOBU

Application Number:

JP2013224672A

Publication Date:

May 07, 2015

Filing Date:

October 29, 2013

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TETENO CO LTD

International Classes:

B23D77/00; B24D3/00; B24D7/00; B24D7/18

Domestic Patent References:

JPH0247122U	1990-03-30
JPH0852657A	1996-02-27

Attorney, Agent or Firm:

Yukio Murata

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