Hollow high-precision three-axis horizontal turntable in heavy load

Abstract

The invention relates to a hollow high-precision three-axis horizontal turntable in a heavy load, which comprises a base, two groups of outer frame assemblies, a middle frame, a first angle measurement device, two groups of middle frame assemblies, an inner frame, a second angle measurement device, an inner frame assembly, a load mounting frame and a circular grating, wherein the two groups of outer frame assemblies are fixedly connected with a first side wall and a second side wall of the base respectively; each of two ends of the middle frame is connected with one outer frame assembly groupand performs rotating movement under driving of the outer frame assembly group; the first angle measurement device is connected with the outer frame assemblies; the two groups of middle frame assemblies are fixedly connected with the middle frame; the inner frame is connected with the two groups of middle frame assemblies respectively and performs turning movement under driving of the middle frameassemblies; the second angle measurement device is connected with the middle frame assemblies for measuring the rotating angle of the inner frame; the inner frame assembly is fixedly connected with the inner frame; the load mounting frame is fixedly connected with the inner frame assembly and rotates under driving of the inner frame assembly; and the circular grating is connected with the inner frame assembly for measuring the rotating angle of the load mounting frame. The problems of large span, low resonance frequency, large turntable weight and high cost of the traditional table frame canbe solved.

Description

technical field [0001] The invention relates to a three-axis turntable, in particular to a large-load inner hollow high-precision three-axis horizontal turntable. Background technique [0002] The traditional three-axis horizontal turntable includes an outer frame mechanism, a middle frame mechanism, and an inner frame mechanism. The outer frame mechanism includes: an outer frame, an outer frame servo motor, a planetary reducer A, a pinion A, a final stage gear A, an outer frame Shaft, angle code A, resolver A; the middle frame mechanism includes: middle frame, middle frame servo motor, planetary reducer B, pinion B, final large gear B, middle frame shaft, angle code B, resolver B; The inner frame mechanism includes: inner frame, inner frame servo motor, planetary reducer C, pinion C, final large gear C, angle code C, circular grating, and load mounting frame. [0003] The outer frame mechanism is located at the outermost end of the turntable, and is composed of an outer fr...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a large-load hollow high-precision three-axis horizontal turntable, which solves the problems of large frame span size, low resonance frequency, heavy turntable weight and high cost.

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