Pneumatic clamp for grinding robot casting

Abstract

The invention provides a pneumatic clamp for grinding a robot casting. The pneumatic clamp comprises a bottom plate, an outer cover shell, a clamping mechanism, a dustproof mechanism and a detection mechanism, wherein the outer cover shell comprises a plurality of side vertical plates and a top plates, the side vertical plates are perpendicular to the bottom plate; the clamping mechanism comprisesa telescopic cylinder and a paralleled air claw, wherein the telescopic cylinder and the paralleled air claw are longitudinally connected, the telescopic cylinder is fixed on the bottom plate, the paralleled air claw is connected with the side vertical plates through a sliding mechanism, the parallel air claw is connected with two clamping fingers, and clamping of a workpiece is realized by controlling the opening and closing of the two clamping fingers; and the positioning mechanism comprises a plurality of positioning pins which are arranged on the top plate according to the positioning reference on the part to be clamped. The clamp achieves rapid positioning and clamping of the workpiece relative to a robot, can detect the type and the clamping state of the workpiece through the detection mechanism, and is wholly simple in structure and convenient to replace.

Description

technical field [0001] The invention belongs to the field of fixtures for robots, and in particular relates to a pneumatic fixture for polishing castings of robots. Background technique [0002] With the arrival of Made in China 2025, the application of industrial robots is becoming more and more extensive. In the automobile manufacturing industry, many of the auto parts are castings, such as automobile hubs, engine blocks, cylinder heads, crankshafts, calipers, brackets, steering knuckles and other parts. Grinding of flash and burrs, and the use of robot grinding can improve processing efficiency, ensure processing accuracy, and reduce grinding costs. In the robot automatic grinding system, the fixture plays a vital role. In general industrial robot applications, processing tools are often installed at the end of the robot to process the workpiece fixed on the fixture. However, in the grinding system, due to the high quality of the grinding tool grinder, it is not suitab...

AI Technical Summary

Problems solved by technology

[0003] In the current actual production, manual grinding is used, and a large number of workers hold the workpiece in one hand and the angle grinder in the other. There are four main problems: 1. There are many mirrored parts in auto parts, and the surface features of the mirrored parts are mirror-symmetrical. But the positioning references are exactly the same. However, since the robot cannot distinguish the type of parts, it can only make a separate grinding system for each of the same parts, which greatly increases the processing cost; 2. The robot lacks the detection of the grasping of the parts. If the worker fails to place the workpiece on the tooling correctly, or the workpiece itself is a damaged part, the robot fixture cannot be clamped correctly, but it is still polished according to a fixed track, which may cause damage to system components in light cases, and may cause damage in severe cases. The workpiece is blown away by the grinding wheel, causing a safety accident; 3. The replacement operation is troublesome. Since one fixture cannot be adapted to the processing of all parts, it is necessary to replace the fixture during production

In actual production, the operation of replacing fixtures is often complicated, and rapid replacement cannot be achieved, resulting in long-term shutdowns that affect the production progress; 4. The positioning pins and clamping parts of the fixtures collide with the workpiece many times a day, rub against them, and are exposed for a long time It will cause rust in the air, affecting the accuracy of positioning and the reliability of clamping

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