Serial-parallel TCM massage robot
A robot and parallel technology, applied in the direction of manipulators, program-controlled manipulators, manufacturing tools, etc., can solve the problems of inflexible rotation, small working space, difficult control, etc. Good results
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Embodiment 1
[0022] Figure 1 The three-degree-of-freedom parallel mechanism consists of a virtual triangular fixed platform ABC, an isosceles triangular moving platform A'B'C' and three branch chains AA"A', BB"B', CC"C connecting the virtual fixed platform and the moving platform 'composition. Among them, the branched chain AA"A' is R / / R / / C, the branched chain B B"B' is RR / / R / / R, and the branched chain C C"C' is S-S-R. The axis of rotary pair B is parallel to the axis of rotary pair C and perpendicular to the guide line of cylindrical pair A. Establish the coordinate system as shown in the figure: the moving coordinate system is set on the moving platform A'B'C', the origin O' is located at the midpoint of A'B', the Y' axis is selected on the A'B' axis, and the Z' axis Perpendicular to the moving platform, the fixed coordinate system is set on the virtual fixed platform ABC, the Y axis is selected on the guide rail AB line, and OA is equal to O'A', the Z axis is perpendicular to the upper...
Embodiment 2
[0025] The three-degree-of-freedom parallel mechanism consists of a virtual triangle fixed platform ABC, an isosceles triangle moving platform A'B'C' and three branch chains AA"A', BB"B', CC"C' connecting the fixed platform and the moving platform. Among them, the branched chain AA"A' is R / / R / / R4r (4r is a parallelogram mechanism); the branched chain B B"B' is RR / / R / / R; the branched chain C C"C' is S-S-R . The axes of the four revolving pairs 4r and the revolving pair B of the parallelogram mechanism are parallel to the axis of the revolving pair C. According to the mechanism configuration, by analyzing the motion characteristics of each branch chain, it is concluded that the moving platform of the parallel mechanism has 3 degrees of freedom relative to the fixed platform: 2 moving and 1 rotating.
[0026]The mechanism of the series-parallel TCM massage robot is shown in Figure 4. The virtual fixed platform ABC of the three-degree-of-freedom parallel mechanism shown in Fig...
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