High-order tangent contact enveloping type polishing machining control system and method

Abstract

The invention belongs to the technical field of intelligent polishing machining and manufacturing, and particularly relates to a high-order tangent contact enveloping type polishing machining controlsystem and method. The control system comprises a polishing machining parameter planning module, a workpiece pose control module, an abrasive belt compliance control module, an enveloping machining module and a polishing amount measuring module, wherein the polishing machining parameter planning module is used for identifying a convex curved surface in a workpiece curved surface, the workpiece pose control module and the abrasive belt compliance control module act cooperatively so as to adjust the pose of a workpiece and the contact force of the enveloping machining module and a sector-shapedcolumn surface in real time, and polishing machining on the workpiece is conducted under the condition; and the polishing amount measuring module is used for judging whether a polishing process is finished or not. The invention further discloses a corresponding method. According to the system, high-order cutting and enveloping on the machined workpiece are realized, meanwhile, the the workpiece pose control module and the abrasive belt compliance control module act cooperatively to achieve the synergistic effect, so that closed-loop control is realized, and the stability, rapidity and accuracyof system response are ensured.

Description

technical field [0001] The invention belongs to the technical field of intelligent grinding and polishing, and more specifically relates to a control system and method for high-order tangential and enveloping grinding and polishing. Background technique [0002] With the development of science and technology, complex surfaces are widely used in aerospace, automobile, ship and other fields. These surfaces cannot be composed of elementary analytical surfaces, and it is difficult to obtain accurate analytical solutions for free complex surfaces. Therefore, the finishing of complex surfaces is a manufacturing problem that needs to be solved urgently. [0003] At present, the surface finishing of free-form surfaces mainly includes manual grinding and automatic polishing. The former has high labor intensity, low processing efficiency, uneven grinding and polishing allowance, and the surface consistency of parts is greatly affected by the technical proficiency of workers. And in ...

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Problems solved by technology

The former has high labor intensity, low processing efficiency, uneven grinding and polishing allowance, and the surface consistency of parts is greatly affected by the technical proficiency of workers.

And in the actual work process, skilled workers use test samples to plan the grinding and polishing allowance and evaluate the quality of grinding and polishing. The sample detection efficiency is low and the versatility is poor.

The latter mainly adopts contact wheel or free belt grinding and polishing: the elastic deformation of the contact wheel not only destroys the tangential constraint in the original grinding path planning but also leads to uneven force on the contact surface; The convex free-form surface forms an ideal contact surface for cladding high-order tangential contact, but the industry lacks research on its cladding theory, and most industrial applications are in the stage of obtaining process parameters through repeated experiments

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