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1.
公开(公告)号:US4872362A
公开(公告)日:1989-10-10
申请号:US327412
申请日:1989-03-22
CPC分类号: F16H25/2261 , B23Q5/326 , B25J9/102 , B25J9/107 , B25J9/12 , Y10T74/18664 , Y10T74/19902 , Y10T74/20323
摘要: A driving mechanism having a spindle which is provided with a first helical threaded portion having a lefthand direction of rotation and with a second helical threaded portion having a righthand direction of rotation. A pair of spindle guides each engage a respective spindle threaded portion for rotating the spindle and translating the spindle in an axial direction. Each spindle guide has three pairs of runner rollers on a sleeve for centering and supporting the spindle within the sleeves. The three pairs of runner rollers on each sleeve kinematically constrain the six degrees of freedom of the spindle without overconstraint to reduce friction and binding of the spindle in the spindle guides.
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公开(公告)号:US4929146A
公开(公告)日:1990-05-29
申请号:US188586
申请日:1988-04-29
CPC分类号: B25J9/107 , B25J18/00 , B25J9/042 , Y10S414/13 , Y10T16/522 , Y10T16/5476 , Y10T403/32951 , Y10T74/18944 , Y10T74/20 , Y10T74/20207
摘要: A manipulator having an end effector (1) displaceable by means of a four-rod mechanism, a comparatively light and stiff construction being obtained in that each of the rods (3,5,9,11) has a tubular support (73,79,159,181), which is secured by a bridge (147,149,169,191) to the bearing plate (87,93,119,193). The manipulator is particularly suitable for use in automatic mounting equipment.
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