High-precision rotary table with hydraulic brake structure

Abstract

The high-precision rotary table with the hydraulic brake structure comprises a rotary table body, a mounting seat, an expansion sleeve, an enclasping sleeve and a rotary driving mechanism, a first mounting cavity is formed in the top of the mounting seat, a mounting column is arranged at the position, in the center of the first mounting cavity, of the mounting seat, and the expansion sleeve, the enclasping sleeve and the rotary driving mechanism are sequentially arranged in the first mounting cavity from inside to outside; the expansion sleeve surrounds the mounting column, an annular sealing oil cavity is formed by the expansion sleeve and the outer wall of the mounting column, and an oil way communicating with the sealing oil cavity is formed in the mounting base. The elastic modulus of the enclasping sleeve is larger than that of the expansion sleeve, the enclasping sleeve is arranged outside the expansion sleeve in a sleeving mode, and when oil does not pass through the sealing oil cavity, the enclasping sleeve is in clearance fit with the rotary driving mechanism; the rotary table body is arranged above the mounting column and covers the first mounting cavity, and the rotary driving mechanism is connected with the rotary table body and used for driving the rotary table body to rotate. The brake energy loss is small, machining is convenient, and positioning is accurate.

Description

technical field [0001] The invention relates to the technical field of numerically controlled servo turntables, in particular to a high-precision turntable with a hydraulic brake structure. Background technique [0002] At present, there are various forms of CNC servo turntables at home and abroad, among which worm gear turntables are widely used because of their large transmission torque and simple structure. [0003] Traditional worm gear turntables use steel sleeves or discs to achieve brake positioning. The torque of the disc brake structure is achieved by sacrificing the radial space. Under the same radial space conditions, the torque generated by the disc brake is smaller than that of the steel sleeve brake. Therefore, when the disc brake structural method is applied to a small turntable, the braking torque is small and the braking precision is not high. [0004] The steel sleeve brake method has a simple structure and high brake positioning accuracy, but the steel s...

AI Technical Summary

Problems solved by technology

Therefore, when the disc brake structure method is applied to a small turntable, the braking torque is small and the braking accuracy is not high.

[0004] The steel sleeve brake method has a simple structure and high braking positioning accuracy, but the steel sleeve brake consumes a lot of energy, and the wall thickness of the steel sleeve needs to be made very thin, which is difficult to process and debug

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