Digital controlled swinging mechanism for polishing aspheric optical element

Abstract

The invention relates to a digital controlled swinging mechanism for polishing an aspheric optical element. The digital controlled swinging mechanism mainly comprises a machine frame, a main shaft motor, an electrical-controlled crank, an electrical-controlled connecting rod, a rocker, a swinging arm, a balancing weight, an universal joint cross, a polishing disk, a controller and an electric slip ring, wherein the length of the electrical-controlled crank and the length of the electrical-controlled connecting rod can be controlled by the controller, so that the swinging amplitude and the swinging position of the aspheric strip repairing and polishing disk are controlled. According to the digital controlled swinging mechanism disclosed by the invention, the process of manually repairing strips during polishing the aspheric optical element can be replaced, the processing efficiency is improved, the shortcomings that manual strip repairing is inaccurate in track control, and uneven in polishing pressure distribution are overcome; and the processing accuracy is improved.

Description

technical field [0001] The invention relates to optical processing, in particular to a numerically controlled pendulum mechanism for polishing aspheric optical elements. Background technique [0002] In the patent "A CNC Polishing Manipulator for Large-Aperture Optical Components" (Patent Publication No. CN 101386146 B), a CNC oscillating polishing machine is introduced. The X-axis of the machine is a swing axis, and the Y-axis is a telescopic axis, both of which are controlled by servo motors. If the polishing head is to run according to the set trajectory, the servo motor may not do uniform circular motion, but complex variable speed motion. , it is impossible for the motor to do complex variable speed movement to have a high speed, which means that the moving speed of the polishing head is limited. At the same time, due to the use of an actively driven polishing head, the moving speed of this type of polishing head is further limited due to its large mass. , then the pol...

AI Technical Summary

Problems solved by technology

The X-axis of the machine is a swing axis, and the Y-axis is a telescopic axis, both of which are controlled by servo motors. If the polishing head is to run according to the set trajectory, the servo motor may not do uniform circular motion, but complex variable speed motion. , it is impossible for the motor to do complex variable speed movement to have a high speed, which means that the moving speed of the polishing head is limited. At the same time, due to the use of an actively driven polishing head, the moving speed of this type of polishing head is further limited due to its large mass. , then the polishing head of the machine tool rotates, and the whole moves at a lower speed. Accordingly, this invention is no different from the traditional CNC polishing method (CCOS). The position of the shaft on the wobble plate reduces the eccentricity, so that the X-axis driving motor can rotate at a constant speed throughout the entire circle. Although the X-axis moving speed can be improved to a certain extent, it is still limited by the high-quality polishing head and cannot be very high. On the other hand, the polishing trajectory is single at this time, which cannot meet the needs of component processing

[0003] In summary, the movement of this invention is not flexible enough, it is no different from the traditional CNC polishing method (CCOS), it cannot replace the traditional tape repair method, and it cannot achieve the positive effect mentioned

[0004] Using a small tool to repair the belt does not require much force. The traditional CNC polishing method (CCOS) is processed by a heavy machine tool, which has poor flexibility and poor processing quality. In many cases, manual repair is still required, but manual repair of aspheric optical components is laborious. The shortcomings of high strength and difficult to control the surface shape accurately, so there is an urgent need for a polishing equipment that can replace manual repair in aspheric optical processing

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