Title:
ねじ装置
Document Type and Number:
Japanese Patent JP6753256
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prolong a service life and improve productivity, in a screw guide device.SOLUTION: A screw device is configured such that a stroke coefficient fis used so as to become less than 4.8, and a residual austenite amount γon a screw groove surface of the screw device satisfies the following equation. The equation 1 is shown.SELECTED DRAWING: Figure 1
Inventors:
Ueda Shindai
Abe Nariaki
Hideyuki Tobitaka
Abe Nariaki
Hideyuki Tobitaka
Application Number:
JP2016194734A
Publication Date:
September 09, 2020
Filing Date:
September 30, 2016
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
F16H25/22; B29C45/17; B30B1/18; F16H25/24
Domestic Patent References:
| JP2007127240A | ||||
| JP200476823A | ||||
| JP2005240970A | ||||
| JP2006002249A |
Foreign References:
| WO2015182767A1 | ||||
| WO2013060866A1 |
Attorney, Agent or Firm:
Patent business corporation glory patent office