Long-travel two-axis linear fast tool servo device

Abstract

The invention discloses a long-travel two-axis linear fast tool servo (FTS) device. The device is applicable to the generation of a non-rotating symmetric optical free curved surface by a diamond turning method. The device mainly comprises a matrix, a driver, a disturbance canceller and a tool rest, wherein the disturbance canceller realizes a function of cancelling motion disturbances of the device in an X direction and a Z direction through flexible hinges; and rotors of voice coil motors with ultraprecision driving functions act on a main flexible flange through the disturbance canceller, and drive a diamond cutter to realize the long-travel linear high-frequency reciprocating servo motion of the diamond cutter in the X direction and the Z direction. The device has a simple structure, is low in cost and quick in response, improves the positioning accuracy and driving accuracy of FTS, and can realize the multi-degree-of-freedom, long-travel and high-frequency-response reciprocating linear motion of the FTS.

Description

technical field [0001] The invention relates to a large-stroke two-axis linear fast tool servo device, which is suitable for technical fields such as ultra-precision turning and turning of optical precision parts. Background technique [0002] Optical free-form surfaces are also called non-rotational symmetric optical surfaces. Because they have a large design space, they can improve optical performance, thereby simplifying the optical system and reducing the weight of the structure. This makes optical free-form surfaces important in many national economy and people's livelihood. All fields have extremely wide application requirements, including industrial fields such as aerospace, aviation, and national defense, as well as consumer fields such as automobiles, mobile phones, and communications. [0003] Whether the free-form surface optical parts can be widely used in the above-mentioned fields depends on whether the optical free-form surface can be precisely and efficiently...

AI Technical Summary

Problems solved by technology

[0004] However, there are still some key issues to be studied and resolved in the research on FTS so far. These problems mainly include: 1. At present, most of the research on FTS is still limited to single-degree-of-freedom FTS, because it cannot realize the synchronous reciprocation of X-axis and Z-axis motion and can not realize the autonomous control of the surface topography of the tool trajectory planning; second, the stroke of the existing FTS is mostly micron level, which limits the performance of the FTS, so that the superiority of the FTS cannot be fully reflected; third, the stroke of the FTS and its The response frequency is always contradictory. How to realize the multi-degree-of-freedom and large-stroke high-frequency response of FTS needs to be studied and solved.

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