Parallel platform mechanism with two degrees of freedom
A degree of freedom, platform technology, applied in the fields of automobile, aerospace, machine tool mechanical auxiliary facilities, can solve the problem that two-degree-of-freedom parallel mechanism rarely occurs, and achieve the effect of large bearing capacity, stable movement and easy control
Inactive Publication Date: 2011-05-18
BEIHANG UNIV +1
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[0003] The existing parallel mechanisms with few degrees of freedom are mainly three-degree-of-freedom mechanisms, such as Delta three-degree-of-freedom moving mechanism, 3-3R spherical mechanism, Tsai three-dimensional moving mechanism, etc.; but two-degree-of-freedom parallel mechanisms rarely appear in the literature
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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] Such as figure 1 As shown, a two-degree-of-freedom parallel platform mechanism of the present invention has a specific structure as follows:
[0026] Two bases 1 are fixed;
[0027] Two base guide rails 2 are fixedly connected to the base respectively;
[0028] Four base sliders 3 are respectively movable and fixed in pairs on the base guide rails;
[0029] Two base T-shaped pads 4 are respectively fixed on the base sliders of the two base guide rails; a universal joint bearing 11 is respectively arranged in the upper circular hole of the base T-shaped pad 4;
[0030] Two groove T-shaped pads 9 are respectively fixed on the base sliders of the other two base rails; so that a base T-shaped pad and a groove T-shaped pad are respectively fixed on the base sliders of each base rail ; A universal joint bearing 11 is respectively placed in the upper roun...
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The invention relates to a parallel platform mechanism with two degrees of freedom. The mechanism has a formwork made of a metallic material and specifically comprises two stationary bases, two base guide rails, four base slide blocks, two T-shaped base cushion blocks, two T-shaped grooved cushion blocks, four T-shaped top cushion blocks, three top guide rails, a fixed seat, two thrust slide blocks and two screw jackets, wherein the two base guide rails are respectively and fixedly connected on the bases, the four base slide blocks are respectively and movably fixed on the base guide rails in pairs, the two T-shaped base cushion blocks are respectively fixed on two base slide blocks of the base guide rails, the two T-shaped grooved cushion blocks are respectively fixed on the other two base slide blocks of the base guide rails, one end of the fixed seat is fixed on a platform, the other end of the fixed seat is fixedly connected with one T-shaped top cushion block, and the two screw jackets are respectively and fixedly connected with the thrust slide blocks. The parallel platform mechanism has the advantages of capability of realizing combined motion of translation and rotation, large bearing capacity, stable motion and easiness of control.
Description
technical field [0001] The invention relates to a two-degree-of-freedom parallel platform mechanism, in particular to a four-point supported two-degree-of-freedom parallel and rotatable large-member platform mechanism. The utility model is easy to control, and belongs to the technical field of automobiles, aerospace, and machine tool mechanical auxiliary facilities. Background technique [0002] Compared with the traditional series mechanism, the parallel mechanism has the advantages of high rigidity, high position accuracy and large load bearing. With the deepening of the research work, the shortcomings and weaknesses of the six-degree-of-freedom pure parallel mechanism are gradually exposed, such as the strong coupling between the position space and the attitude space, the attitude ability of the moving platform is poor, and there is no explicit kinematics positive solution. Design and control Complicated etc. At the same time, parallel mechanisms with few degrees of fre...
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IPC IPC(8): B23Q1/46
Inventor 汪苏郇极怀其武苗新刚郭倩贺京杰赵楠张之沣许会超
Owner BEIHANG UNIV