Platform of principal axis with paralleled Z, A two degrees of freedom driven by linear motor

Abstract

A Z-A two-degree-of-freedom parallel spindle platform driven by a linear motor, consisting of a static platform, a column, a linear motor stator and a mover, a self-locking device, a moving sub-assembly, a rotating sub-assembly A, B, a connecting rod assembly, a telescopic rod assembly, Composed of moving platform components and main shaft components; the static platform is flat; the column is groove-shaped; the linear motor stator is set on the column, and the mover is connected to the moving sub-assembly; the self-locking device includes a cylinder, a cylinder seat, a friction plate and a friction column; The sub-assembly consists of a linear guide rail, a slider and a motion base; the rotary sub-assembly is a rotary part; the connecting rod assembly is V-shaped; the telescopic rod assembly has a telescopic rod and a U-shaped fork; the moving platform assembly is a geometrically symmetrical polygon. The connection relationship is: the column is connected to the static platform; the mobile sub-assembly is placed on the column; the connecting rod assembly is connected to the mobile sub-assembly and the dynamic platform assembly through the rotating sub-assembly A and B; one end of the telescopic rod assembly is connected to the static platform, and the other end is connected to the The rotating subassembly B is connected to the moving platform assembly; the main shaft part is arranged on the moving platform assembly.

Description

(1) Technical field: [0001] The invention relates to a Z-A two-degree-of-freedom parallel spindle platform driven by a linear motor used in a parallel machine tool, which belongs to mechanical engineering. (two) background technology: [0002] Parallel machine tool, also known as virtual (virtual) axis machine tool, is a new type of CNC processing equipment that came out in the mid-1990s. Since the first complete six-degree-of-freedom parallel machine tool was launched in the United States, various countries have successively launched various prototypes of parallel machine tools. Since multi-degree-of-freedom parallel machine tools have many shortcomings such as complex kinematic modeling, kinematic coupling and low machining accuracy, and in many cases, users do not need six-degree-of-freedom machine tools, and less than six degrees of freedom can meet actual processing requirements. Therefore, the parallel machine tool with few degrees of freedom has become the research h...

AI Technical Summary

Problems solved by technology

Compared with traditional machine tools, parallel machine tools have many advantages such as simple structure, high rigidity, strong bearing capacity, and good dynamic characteristics, but there are also disadvantages such as small working space, motion interference and singularity in the working space.

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