Title:
ROLLING DEVICE
Document Type and Number:
Japanese Patent JP2016147285
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable bulk production of screw bodies with a high accuracy.SOLUTION: A screw rolling device 100 for rolling a thread part on a screw stock B comprises: a first die member 132 which a first rolling irregularity is formed; a second die member 142 in which a second rolling irregularity is formed, and which is moved in a rolling direction relatively to the first die member 132; a cycle mechanism 160 which, in the state that the screw stock B is sandwiched between the first die member 132 and the second die member 142, so relatively moves both die members as to roll the thread part on the screw stock B; and a position adjustment mechanism 180 which adjusts relative positions of the first die member 132 and the second die member 142 in the rolling direction.SELECTED DRAWING: Figure 2
Inventors:
MICHIWAKI YUTAKA
Application Number:
JP2015025268A
Publication Date:
August 18, 2016
Filing Date:
February 12, 2015
Export Citation:
Assignee:
NEJILAW INC
International Classes:
B21H3/06; B21H3/04
Domestic Patent References:
| JPS6462237A | 1989-03-08 | |||
| JPS469931B1 | ||||
| JPH0666834U | 1994-09-20 | |||
| JPS57137041A | 1982-08-24 | |||
| JP2007290001A | 2007-11-08 |
Attorney, Agent or Firm:
Masashi Sahara
Kazuki Yokota
Kazuki Yokota