Two-rotation and one-move series-parallel parallel driving swing head mechanism with follow-up constraint

A hybrid and follow-up technology, applied to manipulators, program-controlled manipulators, manufacturing tools, etc., can solve the problems of large space occupied by the drive rod, singularity of layout form, and high requirements for servo motors, so as to avoid singularity problems and structure Compact and dynamic performance

Active Publication Date: 2019-11-22
YANSHAN UNIV
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Problems solved by technology

Chinese patent 200910228104.7 discloses a parallel mechanism that can realize two-dimensional translation and two-dimensional rotation, including a fixed frame, a moving platform and four branch chain structures. The branch chain structure is composed of linear units and fixed-length rods. The four branch chains are surrounded by Evenly arranged, there is a singularity problem. In practical applications, the requirements for the servo motor are high, and the servo motor may even be damaged.
Chinese patent 201010507587.7 discloses a space four-degre...

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  • Two-rotation and one-move series-parallel parallel driving swing head mechanism with follow-up constraint
  • Two-rotation and one-move series-parallel parallel driving swing head mechanism with follow-up constraint
  • Two-rotation and one-move series-parallel parallel driving swing head mechanism with follow-up constraint

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Embodiment Construction

[0037] A two-rotation-one-shift hybrid parallel drive swing head mechanism with follow-up constraints, which mainly includes a mounting frame 1, an extension body 2, a first extension cylinder 33, a second extension cylinder 43, a first straight line The driving unit 34 , the second linear driving unit 44 , the third linear driving unit 61 , the first connecting rod 31 , the second connecting rod 41 , the third connecting rod 51 , the moving platform 7 and the electric spindle 71 . The two protruding cylinders adopt hollow steel pipes, and the protruding body 2 adopts the process of welding the hollow cylinder and the steel plate.

[0038] The extension body 2 includes an outer cylinder layer 21, an upper connecting plate 221, an intermediate connecting plate 222, a lower connecting plate 223, a first thin cylindrical tube 231, a second thin cylindrical tube 232 and a third thin cylindrical tube 233; each connecting plate There are three through holes evenly distributed at 120...

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Abstract

The invention provides a two-rotation and one-move series-parallel parallel driving swing head mechanism with follow-up constraint. The two-rotation and one-move series-parallel parallel driving swinghead mechanism comprises a mounting frame, a stretching-out body, a first stretching-out cylinder, a second stretching-out cylinder, a first linear driving unit, a second linear driving unit, a thirdlinear driving unit, a first connecting rod, a second connecting rod, a third connecting rod, a movable platform and an electric spindle. A parallel connection part of a series-parallel swing head only comprises two main driving branches and one follow-up constraint branch, thus compared with a parallel connection machining head with four or more moving branches, the number of branched chains issmall, and the two-rotation and one-move series-parallel parallel driving swing head mechanism has the characteristics of compact structure, high rigidity, large working space and good dynamic performance.

Description

technical field [0001] The invention belongs to the technical field of industrial manufacturing of numerical control machine tools, and in particular relates to a two-rotation-one-shift hybrid parallel drive swing head mechanism with follow-up constraints. Background technique [0002] Compared with the series mechanism, the parallel processing head has the advantages of high rigidity, high precision, and many degrees of freedom. It can realize curved surface processing in the field of mechanical processing and effectively improve the processing accuracy. and other industries have important influence. [0003] At present, most parallel processing heads are three-degree-of-freedom parallel mechanisms, such as the Z3 spindle head. Chinese patent 200910228104.7 discloses a parallel mechanism that can realize two-dimensional translation and two-dimensional rotation, including a fixed frame, a moving platform and four branch chain structures. The branch chain structure is compos...

Claims

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Application Information

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IPC IPC(8): B25J9/00
CPCB25J9/0072
Inventor 赵铁石王唱李二伟祝宝军田昕李树欣
Owner YANSHAN UNIV
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