Lower-mobility parallel mechanism with constraint chains
A technology of restraint chains and degrees of freedom, applied in decorative arts, processing models, etc., can solve the problems of multiple clamping, waste of processing time, and increased difficulty in processing complex three-dimensional profiles, achieving low cost, high market value, Simple and practical effect
Inactive Publication Date: 2013-02-27
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology
Existing engraving machine tools can only translate along the three coordinate directions of X, Y, and Z, and cannot realize rotation along a certain coordinate axis. This will make it more difficult to process complex three-dimensional surfaces, and multiple installations Clamping, waste of processing time
Method used
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[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0011] As shown in the figure, the present invention includes a dynamic platform 5, a static platform 9, an electric spindle type cutting tool 12, three active chains 3 and a restraint chain 2, one end of the active chain is connected to the static platform 9 through a Hooke hinge 8, and the other end The ball hinge 7 is connected to the moving platform 83 ; one end of the constraint chain 2 is connected to the static platform 9 through the Hooke hinge 10 , and the other end is connected to the moving platform 5 through the sleeve device 6 . The restraint chain 2 is fixed together with the moving platform 5 through the sleeve device 6. The restraint chain 2 should always be kept perpendicular to the plane of the movable platform 5; Constrain the relative rotation of the chain direction; the electric spindle type cutting tool 12 is kept fixed with the movin...
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The invention discloses a lower-mobility parallel mechanism with constraint chains. The parallel mechanism is a mechanism for realizing the translation of a cutting tool which is arranged on a moving platform along the Z-axis direction and rotation along the X-axis direction and the Y-axis direction. The mechanism comprises the moving platform, a static platform, an electric spindle type cutting tool, three active chains and a constraint chain, wherein one end of the active chain is connected with the static platform through a hooke joint, the other end is connected with the moving platform through a spherical hinge, and the moving platform rotates through extending one or two active chains or shortening the other two or one active chain; and one end of the constraint chain is connected with the static platform through the hooke joint, the other end is fixed on the moving platform through a flange, and symmetrical keys are formed on an internal shaft of an telescopic rod so as to enable the whole parallel mechanism not to rotate along the Z-axis direction. Through the simple parallel configuration, the two-degree-of-freedom rotation and single-degree-of-freedom translation which are realized by a complexed tool can be realized; the mechanism has the characteristics of being simple and practical in structure, high in precision, high in rigidity, low in cost, and high in development and application potentiality; and the functions are realized through the controlling technology and corresponding software development.
Description
technical field [0001] The parallel mechanism involved in the present invention is specifically a driving device capable of translation along the Z-axis direction and rotation along the X-axis and Y-axis directions, and can be used in engraving processing equipment for complex profiles. Background technique [0002] Now, parallel mechanisms have been used in flight simulators, CNC machine tools, etc., but they are rarely used in engraving. The research on the device that adopts parallel mechanism to realize engraving processing is seldom reported at home and abroad now, and the engraving machine tool that also does not have molding parallel mechanism is housed now is used for the processing of wood, stone. Existing engraving machine tools can only translate along the three coordinate directions of X, Y, and Z, and cannot realize rotation along a certain coordinate axis. This will make it more difficult to process complex three-dimensional surfaces, and multiple installati...
Claims
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Inventor 罗继曼张明山刑智慧
Owner SHENYANG JIANZHU UNIVERSITY