Hinge parallel type elliptical vibration cutting flexible device

Abstract

The invention relates to a hinge parallel type elliptical vibration cutting flexible device and belongs to the technical fields of ultra-precision cutting and machining of complex optical parts hard to cut. A first piezoelectric stack and a second piezoelectric stack are respectively mounted in a first hole and a second hole of an integrated flexible hinge through pretightening screws. A first displacement measuring retaining plate and a second displacement measuring retaining plate are respectively fixedly connected with two displacement measuring retaining plate mounting holes of the integrated flexible hinge through fastening screws. A first capacitive displacement sensor and a second capacitive displacement sensor are respectively correspondingly mounted on a first displacement sensor clamp seat and a second displacement sensor clamp seat. A diamond cutter is fixedly connected with the groove at the front end of the integrated flexible hinge. The hinge parallel type elliptical vibration cutting flexible device has the advantages that the elliptical orbit of a diamond cutter point in a space can be achieved precisely, parameter adjusting range is large, the flexible device can be mounted on optional machine tools, and certain universality is achieved.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision cutting and complex optical parts processing of difficult-to-cut materials, in particular to a hinged parallel elliptical vibration cutting flexible device. Background technique [0002] In recent years, with the rapid development of science and technology, some precision parts application fields have higher and higher requirements for the machining accuracy of parts. The application of diamond tools plays an important role in improving the machining accuracy of high-precision parts. For ferrous metal materials, the tool wears too fast, which makes it difficult to greatly improve the machining accuracy of the parts. For the precision machining of difficult-to-machine materials, a breakthrough in the processing method is urgently needed. Vibration cutting is based on this need. Vibration cutting The cutting utilizes the vibration during the machining process, and its unique intermittent cut...

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Problems solved by technology

[0006] At present, the existing non-resonant elliptical vibration cutting device patents can be checked: the patent (CN102078967A) mentions a mixed-frequency three-dimensional elliptical vibration cutting method, which uses a parallel flexible hinge and is driven by a piezoelectric stack. Because the parallel device is distributed at right angles between its motion axes, it is easy to generate motion coupling and it is very difficult to control

The elliptical cutting device mentioned in the patent (CN102059575A) uses a series flexible hinge, but in the design process, the mass of the moving parts is large, it is difficult to achieve high-frequency cutting, and the range of parameter adjustment is limited. For matching processing Machine tools have high requirements and are not universal

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