Title:
FORGING DEVICE AND FORGING METHOD FOR OUTER JOINT MEMBER OF CONSTANT-VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2019/138872
Kind Code:
A1
Abstract:
The present invention includes an ironing mechanism and a phase adjusting mechanism. The ironing mechanism includes a cylinder section in which a pre-processing material constituting an outer joint member has a groove formed in the inner circumferential surface thereof. The ironing mechanism includes a punch set that is inserted into the cylinder section and that can expand and contract; and a die having a hole into which the cylinder section is press fit. Before the pre-processing material is inserted into the punch set, the phase adjusting mechanism adjusts the phase of the inner-circumferential groove of the pre-processing material and the phase of a groove-section molding surface of the punch set.
Inventors:
NUMAMOTO JUN (JP)
FUJITA TAKUYA (JP)
FUJITA TAKUYA (JP)
Application Number:
PCT/JP2018/047765
Publication Date:
July 18, 2019
Filing Date:
December 26, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B21K1/14; B21J5/02; B21J5/12; F16D3/20; F16D3/223
Domestic Patent References:
| WO2017141647A1 | 2017-08-24 |
Foreign References:
| JP2004154810A | 2004-06-03 | |||
| JP2005349417A | 2005-12-22 | |||
| JP2002346688A | 2002-12-03 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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