Parallel-type oval vibration turning device applicable to vertical type excircle machining

Abstract

The invention relates to a parallel-type oval vibration turning device applicable to vertical type excircle machining, belonging to the technical fields of micro-nano and ultraprecise manufacturing and machining on optical elements made of difficult-to-machine materials. Two piezoelectric stacks are connected with a parallel integrated hinge base, two displacement measurement baffles are connected with the parallel integrated hinge base, capacitance displacement sensors are mounted on displacement sensor holders, the displacement sensor holders are mounted on the parallel integrated hinge base through tightening screws, and a diamond cutter is mounted on the front end of the parallel integrated hinge base through tightening screws. The parallel-type oval vibration turning device has the advantages that the structure is novel, the adopted parallel flexible hinge can eliminate the movement generated by driving, and in the spatial structure, the flexible hinges are symmetrically distributed, so that the mutual coupling motion is reduced, the counting process is simple, and accurate control is easily realized.

Description

technical field [0001] The invention belongs to the technical field of micro-nano and ultra-precision manufacturing and complex optical parts processing of difficult-to-machine materials, and in particular relates to a parallel elliptical vibration turning device suitable for vertical cylindrical processing. Background technique [0002] In the context of the rapid development of science and technology in recent years, some application fields have gradually increased the precision requirements of the processed parts, such as aerospace, precision measuring instruments, etc., but the limitations of traditional processing technology have led to bottlenecks in the processing of parts. It is difficult to make further breakthroughs. The application of diamond tools in the field of machining has brought hope to improve the machining accuracy of parts. However, for the processing of some ferrous metal materials, the rapid wear of diamond tools not only makes it difficult to improve t...

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Problems solved by technology

[0006] At present, the existing non-resonant elliptical vibration cutting device patents can be checked: a kind of mixed-frequency three-dimensional elliptical vibration cutting method mentioned in the patent (CN102078967A), 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 kinematic 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. Machine tools have high requirements and are not universal

A three-dimensional elliptical vibration cutting device mentioned in the patent (CN102371359A) also has the above-mentioned limitations, and the elliptical vibration cutting device for vertical cylindrical turning has not been reported yet

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