A straight-axis brake device with power-off self-locking function

Abstract

The invention discloses a straight-shaft braking device with an outage self-locking function. The straight-shaft braking device comprises a brake shell, brake wear-resistant pieces and a spring plate, wherein the brake shell comprises a transverse plate and supporting legs on the two sides of the transverse plate, the tops of the supporting legs extend to the positions above the transverse plate, and the two sides of the spring plate are clamped in straight grooves formed in the tops of the supporting legs; a cavity for introducing compressed air is formed between the spring plate and the transverse plate, and a first air inlet hole used for air inflow is formed in each supporting leg; the brake wear-resisting pieces are fixedly connected to the inner sides of the lower portions of the supporting legs; when the compressed air is not introduced into the cavity, the outer sides of the brake wear-resistant pieces are attached to a rail under the tension of the spring plate to play a braking role; when the compressed air is introduced into the cavity, the spring plate is jacked to protrude outwards, and contact between the brake wear-resisting pieces on the two sides and the rail is loosened. The braking device is novel in structure, low in manufacturing cost and capable of achieving automatic locking after outage, so that the machining precision and safety of a machine tool are greatly improved.

Description

technical field [0001] The invention relates to the field of machine tool processing, in particular to a direct-axis braking device with a power-off self-locking function. Background technique [0002] In a five-axis machine tool, the straight axis (including X, Y, and Z axes) is generally connected to the working mechanism of the machine tool through rails, such as the rotary table, the swing head body and the saddle, etc. The working mechanism of the machine tool can be moved on the track through the slider slide. Due to the motion inertia and self-weight of the working mechanism of the machine tool, a reliable brake device must be installed between the direct axis track and the working mechanism of the machine tool, otherwise it will have a great impact on the machining accuracy and equipment safety. Especially when a power failure occurs, the general brake device that relies on external power to lock the brake can no longer provide a reliable braking function at this ti...

AI Technical Summary

Problems solved by technology

Due to the motion inertia and self-weight of the working mechanism of the machine tool, a reliable brake device must be installed between the straight axis track and the working mechanism of the machine tool, otherwise it will have a great impact on the machining accuracy and equipment safety

Especially when a power failure occurs, the general brake device that relies on external power to lock the brake can no longer provide a reliable braking function at this time, which brings a huge hidden danger to the safety of the five-axis machine tool

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