公开(公告)号：US20100263467A1

公开(公告)日：2010-10-21

申请号：US12740924

申请日：2008-10-29

申请人： Soshi Miyahara ,  Masahiko Yoshino ,  Lina Teng ,  Tsutomu Togashi ,  Takashi Sakuyama ,  Kentaro Nishimura ,  Tetsuya Miura ,  Akimasa Yoshida ,  Yusuke Todoroki

发明人： Soshi Miyahara ,  Masahiko Yoshino ,  Lina Teng ,  Tsutomu Togashi ,  Takashi Sakuyama ,  Kentaro Nishimura ,  Tetsuya Miura ,  Akimasa Yoshida ,  Yusuke Todoroki

IPC分类号： F16H25/22

CPC分类号： F16H25/2247 ,  F16H2025/2271 ,  Y10T74/19767 ,  Y10T74/19772

摘要： Provided is a roller screw capable of preventing rollers moving from an unloaded return path to a loaded roller rolling path from coming into collision with a scooping portion. The roller screw has: a screw shaft 1 having a spiral roller rolling surface la formed on an outer peripheral surface thereof; a nut 2 having a loaded roller rolling surface 2a formed in an inner peripheral surface thereof; a circulation member 3 having an unloaded return path connecting one end of the loaded roller rolling surface 2a of the nut 2 to an opposite end thereof; and a plurality of rollers 4 arranged in a loaded roller rolling path 6 and the unloaded return path. In the circulation member 3, as a scooping portion that juts toward the screw shaft 1 and provided for scooping the rollers 4 moving in the loaded roller rolling path 6 up into the unloaded return path, a pair of diagonal corresponding parts 14 is provided which are in contact with diagonal parts 4e of a rectangular side surface of each roller 4 and a width between which is gradually narrower as they are deeper in the unloaded return path in such a manner that a cross section of the unloaded return path is closer to a rectangle.

摘要翻译： 提供一种滚子丝杠，其能够防止辊从卸载返回路径移动到加载的滚动滚动路径，从而与舀出部分发生碰撞。 滚子丝杠具有：在其外周面上形成有螺旋滚子滚动面1a的螺杆轴1; 具有形成在其内周面的负载辊滚动面2a的螺母2; 具有将螺母2的负载滚子滚动面2a的一端与其另一端连接的无载返回路径的循环构件3; 以及布置在加载辊滚动路径6中的多个辊4和未加载的返回路径。 在循环构件3中，作为朝向螺杆轴1突出并且用于将在加载的滚动滚动路径6中移动的滚子4向上抽取到无载返回路径中的铲斗部分，设置有一对对角线对应部件14， 与每个辊4的矩形侧表面的对角线部分4e接触，并且其宽度在它们在无载返回路径中较深时逐渐变窄，使得卸载返回路径的横截面更接近矩形 。

公开(公告)号：US20090249912A1

公开(公告)日：2009-10-08

申请号：US11908210

申请日：2006-03-02

申请人： Hidekazu Michioka ,  Makoto Iizumi ,  Satoshi Fujita ,  Akimasa Yoshida

发明人： Hidekazu Michioka ,  Makoto Iizumi ,  Satoshi Fujita ,  Akimasa Yoshida

IPC分类号： F16H25/22

CPC分类号： F16H25/2247 ,  F16H2025/2271 ,  Y10T74/19744 ,  Y10T74/19791

摘要： The present invention provides a roller screw capable of circulating rollers smoothly.A roller screw of the present invention has a screw shaft 1 having a roller rolling surface 1a spirally formed with a lead on an outer surface thereof; a nut 2 having a roller rolling surface 2a spirally formed on an inner surface thereof to face the roller rolling surface 1a of the screw shaft 1; and a plurality of rollers 4 arranged in a rolling path 3 between the roller rolling surface 1a of the screw shaft 1 and the roller rolling surface 2a of the nut 2 and moving around the screw shaft while rotating on rotation axes of the rollers. In this roller screw, each of the rotation axes 4a of the rollers 4 substantially crosses a center line 1b of the screw shaft 1. Since each of the rotation axes 4a of the rollers 4 crosses the center line 1b of the screw shaft 1 (in other words, the rollers 4 arranged in the rolling path 3 are not skewed from the beginning) even when the rolling path 3 has the lead, the roller 4 are allowed to move smoothly.

摘要翻译： 本发明提供一种能够平稳地循环辊的滚柱螺杆。 本发明的滚珠丝杠具有螺杆轴1，该螺杆轴1具有在其外表面上螺旋地形成有引线的滚子滚动表面1a; 螺母2，其具有螺旋形地形成在其内表面上的滚子滚动表面2a，以面对螺杆轴1的滚子滚动表面1a; 以及多个辊4，其布置在螺杆轴1的滚子滚动表面1a和螺母2的滚子滚动表面2a之间的滚动路径3中，并且在滚子的旋转轴线上旋转的同时沿着螺杆轴移动。 在该滚子丝杠中，滚子4的旋转轴线4a基本上与螺杆轴1的中心线1b相交。由于滚子4的旋转轴线4a与螺杆轴1的中心线1b相交 换句话说，即使滚动路径3具有引导，滚动路径3中布置的滚子4也不会从头开始偏斜），所以允许滚筒4平稳地移动。

公开(公告)号：US20080110286A1

公开(公告)日：2008-05-15

申请号：US12003590

申请日：2007-12-28

申请人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

发明人： Kentarou Nishimura ,  Akimasa Yoshida ,  Hiroshi Niwa

IPC分类号： F16H25/22

CPC分类号： F16C33/3706 ,  F16H25/2219 ,  Y10T74/19749 ,  Y10T74/19767 ,  Y10T74/19772

摘要： The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projecting return piece adapted to be fit-engaged with a recess cut in an inner peripheral surface of the nut main body, the return piece being provided with a scoop portion for dislodging the balls from the ball rolling groove of the screw shaft and a direction switching passage for guiding the dislodged balls to the entrance of a ball return hole. The projecting return piece is divided into a first piece formed integral with the cover plate and a second piece fixed to the first piece by a curved plane including the center line of the direction switching passage.