Constant-force polishing and grinding device

Abstract

The invention relates to the field of polishing and grinding, in particular to a constant-force polishing and grinding device which comprises a fixed chassis. A connecting column is installed in the center of the upper end of the fixed chassis; a telescopic guide device is installed in the center of the bottom end of the fixed chassis; flexible rods distributed in an array mode are installed on the outer side wall of the fixed chassis and comprise vertical rods and transverse rods; an intermediate body is installed between the transverse rods and the telescopic guide device; and a polishing and grinding head is installed at the bottom end of the intermediate body. When the constant-force polishing and grinding device provided by the invention is used, the polishing and grinding head polishes and grinds a corresponding workpiece, and when the vibration displacement and the error displacement of the tail end are within the constant-force displacement range, the force applied to the surface of a body to be machined cannot be changed, so that the surface of the body to be machined can be protected; and according to the constant-force polishing and grinding device designed by the invention, polishing and grinding non-uniformity caused by manual polishing and grinding can be effectively improved, and force fluctuation caused by tail end vibration during robot polishing and grinding can be compensated, so that the machining quality is improved, the structure is simple, and the reliability is high.

Description

technical field [0001] The invention relates to the field of polishing and grinding, in particular to a constant force polishing and grinding device. Background technique [0002] With the development of technology, more and more parts, processed welds, workpiece contact surfaces and automotive surface polishing require higher precision. In design and manufacturing, although the design can be optimized to improve the design accuracy, it is necessary If you want to further improve the surface accuracy, you must further polish the surface. However, when polishing, tools and parts need to maintain a certain contact force. If the force is too small, they will not be able to contact. If the force is too large, the surface will be damaged. . [0003] For existing customized parts, car surfaces and some special occasions, most of the surfaces to be processed are manually polished. Although this method is flexible in applicable scenarios, the work efficiency is low, and it is neces...

AI Technical Summary

Problems solved by technology

[0002] With the development of technology, more and more parts, processed welds, workpiece contact surfaces and automotive surface polishing require higher precision. In design and manufacturing, although the design can be optimized to improve the design accuracy, it is necessary If you want to further improve the surface accuracy, you must further polish the surface. However, when polishing, tools and parts need to maintain a certain contact force. If the force is too small, they will not be able to contact. If the force is too large, the surface will be damaged.

[0003] For existing customized parts, car surfaces and some special occasions, most of the surfaces to be processed are manually polished. Although this method is flexible in applicable scenarios, the work efficiency is low, and it is necessary to ensure that the force applied to the surface remains constant or fluctuates. It is very small, but manual operation cannot avoid accidents and unstable fluctuations, resulting in the lack of corresponding guarantee of processing quality

[0004] Although robot polishing is slowly becoming popular, the robot will vibrate at the end during the polishing process, and the vibration of the polishing head will cause fluctuations in the polishing force, which will reduce the quality of the processed surface and even cause damage. Even if some sensors are used to compensate these errors, the cost is too high and the structure is complicated. The more electronic devices are added, the stability will decrease accordingly.

When two structures are welded, the excess material in the weld seam needs to be cut. Too much cutting force will cause damage to the structure, and too little cutting force will cause the inability to contact each other for cutting. During the cutting process, due to the The head is low rigidity, and the object to be cut is high rigidity, so the cutter head will vibrate. For the traditional structural vibration, the end displacement will be changed and the cutting force will be affected, but the vibration of the constant force polishing head will not bring to the change of cutting force, so it is necessary to design a constant force polishing and grinding device

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