公开(公告)号：US20030061893A1

公开(公告)日：2003-04-03

申请号：US10283307

申请日：2002-10-30

Applicant: NSK Ltd.

Inventor： Kazuo Miyaguchi ,  Tsutomu Ohkubo ,  Takeshi Nakazawa ,  Shirouji Yabe ,  Soichiro Kato ,  Nobumitsu Takahashi ,  Ryouichi Sato ,  Hiroki Yamaguchi ,  Yoshinori Mizumura

IPC: F16H001/14 ,  F16H001/20

CPC classification number: F16C33/3706 ,  F16C19/20 ,  F16C29/064 ,  F16C33/3713 ,  F16H25/2238 ,  F16H2025/2242 ,  Y10T74/18568 ,  Y10T74/18648 ,  Y10T74/18656 ,  Y10T74/19693 ,  Y10T74/19702 ,  Y10T74/19744 ,  Y10T74/19777 ,  Y10T74/19953

Abstract: In a ball screw device comprising a screw shaft and a nut which make relative movement to each other through a multiplicity of balls, as well as in a linear motion device comprising an outer member and an inner member which make the relative movements to each other through the multiplicity of balls, a spacer having two concave surfaces facing respectively to balls, is disposed between the balls adjacent to each other. A section of each of the concave surfaces of the spacer is formed of two circular arcs of which central positions deviate from each other to form a Gothic arch. The spacer has such a configuration that the balls adjacent to each other come into contact with outer edges thereof or portions vicinal to the outer edges. The spacer also has such a configuration that the balls adjacent to each other come into contact with at least three or more outer edge portions thereof or portions vicinal to the outer edges. The spacer may have a through-hole formed in a thinnest portion thereof.

公开(公告)号：US20030194160A1

公开(公告)日：2003-10-16

申请号：US10414123

申请日：2003-04-15

Applicant: NSK LTD.

Inventor： Shiroji Yabe ,  Soichiro Kato ,  Nobumitsu Takahashi ,  Ryoichi Sato ,  Yoshinori Mizumura ,  Hiroki Yamaguchi

IPC: F16C029/06

CPC classification number: F16C33/3706 ,  F16C29/0609 ,  F16C29/0642

Abstract: A linear guide device includes: a plurality of rolling elements; a guide rail extending in an axial direction thereof and including a plurality of rolling element rolling grooves in two side portions thereof, said rolling groove extending in an axial direction of the guide rail; a slider including a plurality of rolling element rolling grooves respectively opposed to said rolling element rolling grooves of said guide rail, said slider being supported on said guide rail in such a manner that said slider is movable along the axial direction of said guide rail through the rolling movements of said rolling elements respectively inserted between said rolling element rolling grooves of said guide rail and said rolling element rolling grooves of said slider, said slider including a rolling element endless circulation track along which said rolling elements are allowed to circulate endlessly; and a plurality of separators, each interposed between said adjoining rolling elements in the circulation direction of said rolling elements. A clearance is formed between a line of said rolling elements and said separators which are endlessly circulated.

Abstract translation: 线性引导装置包括：多个滚动元件; 沿其轴向延伸的导轨，在其两侧部分包括多个滚动元件滚动槽，所述滚动槽沿导轨的轴向延伸; 滑块，其具有分别与所述导轨的所述滚动体滚动槽相对的多个滚动元件滚动槽，所述滑块以这样的方式被支撑在所述导轨上，使得所述滑块可沿着所述导轨的轴向方向通过所述导轨 所述滚动元件分别插入所述导轨的滚动元件滚动槽和所述滑块的所述滚动元件滚动槽之间的所述滚动元件的滚动运动，所述滑块包括滚动元件环形循环轨道，所述滚动元件可沿其循环循环; 以及多个分离器，每个分离器在所述滚动元件的循环方向上插入在所述邻接的滚动元件之间。 在所述滚动元件的一行与所述分离器之间形成有循环的间隙。