A precision fixture and its control method for processing micro-miniature complex thin-walled parts

Abstract

The invention discloses a precision fixture and its control method for the processing of small and complex thin-walled parts. The core part of its mechanical structure is connected by five gas-liquid damping cylinders connected by universal joints at the upper and lower ends respectively. According to the processing needs of thin-walled parts, the lifting and deflection platform can be lifted from 0 to 80mm and deflected from 0 to 270°, and can hover in any space and maintain the required posture according to the needs, so that it can be clamped in one clamping. The entire workpiece processing can be completed on the compound machine tool; and, through the setting of the vision system, intuitive and accurate processing information is provided for the operator when processing micro-small complex thin-walled parts; the control method adopts the centralized control of the industrial computer, The control scheme is simple and reasonable, with a high degree of automation, convenient and efficient manipulation under the cooperation of man and machine, and is suitable for the processing of micro-small thin-walled structural parts with various three-dimensional complex shapes or free-form surfaces.

Description

technical field [0001] The invention relates to a precision fixture for micro machine tool processing and a control method thereof, in particular to a precision fixture and a control method for processing micro-miniature complex thin-walled parts, and belongs to the technical field of meso / micro cross-scale processing. Background technique [0002] During the processing of micro-miniature parts, it needs to be frequently grasped during the process conversion between machine tools. Due to the small overall structure and size of micro-miniature parts, they are easy to be lost or damaged; and because of their small functional surfaces, re- Positioning and clamping are unreliable and easy to deform. In the light case, the machining accuracy will be lost, and in the severe case, the parts will be scrapped. [0003] In particular, for precision micro-sized structural parts with complex structures, small linear scales, many processing procedures, and high precision requirements, th...

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Problems solved by technology

[0002] During the processing of micro-miniature parts, it needs to be frequently grasped during the process conversion between machine tools. Due to the small overall structure and size of micro-miniature parts, they are easy to be lost or damaged; and because of their small functional surfaces, re- Positioning and clamping are unreliable and easily deformed, which may cause loss of machining accuracy in light cases, or lead to scrapping of parts in severe cases

[0003] In particular, for precision micro-sized structural parts with complex structures, small linear scales, many processing procedures, and high precision requirements, the traditional distributed process method is used to process on multiple machine tools and multiple clamping and positioning, which often cannot guarantee the processing. Quality, some parts have a very low processing pass rate and processing efficiency

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