[China Glass Net] Technical requirements for plexiglass superfinishing parts are uniformly distributed on the entire surface of the plexiglass sleeve with a black dot of 0.02 mm in diameter, and the distance between the points and the points is 0.02 mm. In the middle of the plexiglass sleeve, printing is carried out by the principle of sensitization, so that the surface of the plexiglass is required to have good light transmission, and the surface is free from burrs, scratches and flies. Tempered glass; the original processing technology is: plexiglass sleeve overall casting → rough head grinding → pressure mesh point → black processing → fine grinding. According to the original processing technology requirements, first install the bulkhead, the outer circle of the bulkhead and the inner hole of the plexiglass sleeve adopt the interference fit. The interference is 0.05-0.07mm. When processing, the high-precision cylindrical grinding machine H142 produced by our factory is used. The large grinding diameter is 320mm, and the main reason is that the machine tool has high precision, balanced operation and low vibration. Tempered glass, art glass, glass machinery
The head frame is DC stepless speed regulation. During the process of grinding plexiglass sleeve, it is found that the surface of the plexiglass is very obvious, and the middle pole is easy to produce the knife phenomenon, which causes the parts to be waist-shaped and difficult to eliminate. And roundness is poor. For the above processing quality analysis, since the ends are clamped at both ends, the whole is hollow, and the plexiglass is a non-metallic material, which has poor rigidity and is susceptible to elastic deformation when subjected to force. Therefore, it is necessary to increase the rigidity and strength of the plexiglass to prevent it from being affected. The force is elastically deformed, so the following method is taken. The use of both ends of the bulkhead, cast gypsum powder and old powder in the middle of the plexiglass, improve its rigidity and strength, reduce the force and produce elastic deformation, through the above improvement, in the grinding process, the surface of the plexiglass vibration is significantly improved, The phenomenon of the waist drum shape is also basically eliminated, and the roundness and the radial runout basically meet the requirements of the rough grinding processing precision.
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