Title:
CONNECTING ROD PROCESSING DEVICE AND CONNECTING ROD MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/137831
Kind Code:
A1
Abstract:
According to the present invention, an NC machine tool 1 is used which has: a first rotary cutting tool 14 that is inserted into a large end hole 23 formed in a large end section 22 of a connecting rod 20 and rotationally cuts the inner side surface of the large end section 22; a second rotary cutting tool 15 which is inserted into a small end hole 25 formed in a small end section 24 of the connecting rod 20 and rotationally cuts the inner side surface of the small end section 24; and a column 3 that integrally moves the first rotary cutting tool 14 and the second rotary cutting tool 15 relative to the connecting rod 20. The first rotary cutting tool 14 passes through the large end hole 23 in a state of being parallel to the large end hole 23, the second rotary cutting tool 15 passes through the small end hole 25 in a state of being inclined relative to the small end hole 25, and final processing is performed on the connecting rod 20 by rotationally cutting the large end hole 23 and the small end hole 25.
Inventors:
YOSHIMATSU TAKAHIRO (JP)
MUTO FUMITAKA (JP)
MUTO FUMITAKA (JP)
Application Number:
PCT/JP2019/049930
Publication Date:
July 02, 2020
Filing Date:
December 19, 2019
Export Citation:
Assignee:
YASUNAGA KK (JP)
International Classes:
B23B35/00; B23B39/16; B23B41/04; B23B41/12; F16C7/02; F16C9/04
Foreign References:
| CN208050976U | 2018-11-06 | |||
| JP2017187088A | 2017-10-12 | |||
| JPH07328885A | 1995-12-19 |
Attorney, Agent or Firm:
NAGATO, Kanji (JP)
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