Title:
ボールねじ装置の組立方法
Document Type and Number:
Japanese Patent JP6787217
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an assembly method of a ball screw device capable of preventing occurrence of damage at components of the ball screw device, and improving work efficiency in a screw shaft insertion step.SOLUTION: In a state where a ball 4a positioned at a lower side endmost part of a nut side spiral groove and a crest part 6b positioned at an upper side endmost part of a screw shaft side spiral groove 6 contact with each other, a screw shaft 2 is rotates in a reverse direction to a winding direction of the screw shaft side spiral groove 6, with a vertical distance between the screw shaft 2 and a nut measured. Then, on the condition that a reduction amount of the vertical distance from start of reducing the vertical distance exceeds a predetermined threshold, it is determined to be an engagement phase, and the screw shaft 2 is rotated in the same direction as the winding direction of the screw shaft side spiral groove 6.SELECTED DRAWING: Figure 8
Inventors:
Shigeo Tokura
Hiroyuki Seki
Hiroyuki Seki
Application Number:
JP2017062094A
Publication Date:
November 18, 2020
Filing Date:
March 28, 2017
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
F16H25/22; B23P21/00
Domestic Patent References:
| JP2006315097A | ||||
| JP2004114224A | ||||
| JP2006007336A |
Attorney, Agent or Firm:
Kiwa Patent Office