Brake device of steel bar friction welding machine

Abstract

The invention discloses a brake device of a steel bar friction welding machine. A belt wheel and a transmission belt which are arranged on the brake device to drive a rotating main shaft to rotate andoperate, and a second movable clamping block arranged in a fixed ring and a positioning clamping groove formed in a rotating ring are clamped and fixed to clamp and position the rotating ring, and therefore, the rotating main shaft can rapidly operate and suddenly stop, a brake of the rotating main shaft of the friction welding machine does not produce suddenly stop sliding when stopping working,the rotating main shaft is guaranteed to not slightly swing back and forth in the brake stopping process, the workpiece welding quality is guaranteed, and the work economic benefits are guaranteed. The brake device has a clamping effect on the position of a T-shaped movable extrusion block, so that the T-shaped movable extrusion block does not rebound reversely in the moving process, the clampingconnection of the second movable clamping block and the positioning clamping groove is prevented from being loosen, and the sudden stop effect is ensured.

Description

technical field [0001] The invention relates to the technical field of welding equipment, in particular to a brake device for a steel bar friction welding machine. Background technique [0002] Friction welding machine refers to the equipment that generates heat energy during rotation, and then applies appropriate pressure to complete welding; according to different energy input methods, friction welding machine is divided into two types: continuous drive type and inertia type; the former consists of fixtures, transmission mechanisms, and pressure mechanisms. , brake device and control device; the latter is composed of fixture, transmission mechanism, flywheel, pressurization mechanism and control device; friction welding machine: use the heat generated by the friction between the end faces of the workpiece to make it reach a plastic state, and then top forging is completed Welding method; because the chips are often firmly stuck to the cutter head when turning the workpiece...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the known fast braking methods for the main shaft of friction welding machines are independent mechanical braking methods; specifically, a clutch and a brake are set between the main shaft and the power drive (electrical or hydraulic motor), , the power is transmitted to the main shaft through the clutch, which drives the main shaft to rotate; when the main shaft needs to brake quickly, the clutch is disconnected, and the brake presses the brake pads under the action of the brake cylinder, and the friction between the brake pads forces the main shaft to stop quickly. down to achieve the purpose of fast braking; in order to reduce the heat generation of clutches and brakes and prolong their life, wet friction plates are generally used; this braking method, because of the high frequency of welding, the brake pads wear quickly, and need to be replaced frequently, and the replacement It is very cumbersome and labor-intensive, and it is easy to damage the main shaft. With the wear of the brake pads, it will become slow to perform emergency stop work. Moreover, when the motor reaches zero speed, the drive will easily overshoot the motor speed and torque. Oscillating from zero speed to negative speed makes the rotating shaft swing slightly back and forth during the brake stop process, which further affects the welding quality of the workpiece, reduces the quality of welding production and processing, and affects the economic benefits of the work. Therefore, the present invention proposes a The brake device of the steel bar friction welding machine is used to solve the above problems

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