Rotary table with brake locking mechanism

Abstract

The present invention provides a rotating platform with a brake locking mechanism. The rotating platform comprises a rotating shaft and a brake locking mechanism in a body. The brake locking mechanism comprises an air cylinder, a piston rod, a driven member and a plurality of rolling members, wherein a high-pressure air source enters into a chamber of the air cylinder via the body, the piston rod is driven to drive the driven member to perform straight reciprocating motion, the rolling members are driven to slide aside because of the oblique cone shape of the driven member which is wider in the bottom than the top, and a plurality of claw portions on the top end of the air cylinder are made to expand externally to press against inner walls of the shaft holes in the center of the rotating shaft, thereby enabling the rotating shaft to have the brake locking effect. According to the rotating platform with a brake locking mechanism, only the high-pressure air source is used as a driving source, an adequate brake torque can still be obtained after the amplification of the air pressure thrust through the oblique faces, and the effects of brake locking by the rotating shaft can thus be obtained. Moreover, high-pressure air is used as the driving source and oil pressure equipment with complicated parts is not need to be configured, so the equipment is low in costs and has the advantages of miniaturization.

Description

technical field [0001] The invention relates to a rotary table of a machine tool, in particular to a rotary table with a brake locking mechanism. Background technique [0002] At present, four-axis or five-axis multi-axis machine tools are commonly seen on the market. The rotation of the rotary table is mostly driven by a direct-drive motor, or driven by a worm and a worm wheel. However, due to consideration of processing efficiency during processing, when doing When planning the path, we will try our best to focus on fixed-axis processing, and at this time, the two rotating axes will be locked by brakes to increase their processing stability. [0003] As shown in Figure 8, it is the brake locking mechanism of the existing rotary table. A rotating shaft 91 is arranged in the center of a body 90, and a worm wheel 93 is driven by a worm 92 to drive the rotating shaft 91 to rotate. The rotating shaft 91 is provided with a Disc 94, the disc 94 rotates with the rotating shaft 91...

AI Technical Summary

Problems solved by technology

[0004] However, if the clamp 95 is used to tighten the disc 94, a strong force is required to exert the locking effect. Therefore, the clamp 95 mostly uses hydraulic equipment as the driving source, and the hydraulic equipment has many and complicated parts, so The equipment cost remains high, and the hydraulic equipment takes up a lot of space, so it is not easy to miniaturize

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