Clamping alignment method used for machining thin-walled frame parts through three-axis numerical control machine tool

Abstract

The invention provides a clamping alignment method used for machining thin-walled frame parts through a three-axis numerical control machine tool. The method effectively breaks the technical bottleneck that the thin-walled frame parts are difficult to clamp and position when the initial bases are machined through the combination of a manual precise double-axis circular rotating table (1) and the three-axis numerical control machine tool and through 360-degree rotation and the pitching-direction rotation of a tabletop (5) of the manual precise double-axis circular rotating table (1), and meanwhile the machining range of the three-axis machine tool is widened and application of the three-axis numerical machine tool is wider. The machining quality and the work efficiency are greatly improved. The clamping alignment method is relatively easier and more rapid and convenient to use and wide in application range and improves the machining accuracy, the work efficiency and reliability.

Description

technical field [0001] The invention relates to a clamping and aligning method for processing thin-walled frame parts by a three-axis numerical control machine tool, and belongs to the technical field of product forming and processing. Background technique [0002] Aviation parts have the characteristics of complex shape, high precision requirements, various materials, low rigidity, large machining allowance, and many shape and position tolerance requirements. Clamping deformation is easy to occur during processing, and clamping and positioning are difficult. Among them, castings also account for a large part. Castings are required to draw a line before processing as the rough datum of the initial processing. During processing, the drawn datum line should be leveled and aligned. In most cases, it is directly adjusted on the workbench by using a three-point jack support method. Such parts are generally relatively regular and have convenient press-fit positions, but for compl...

AI Technical Summary

Problems solved by technology

Castings are required to draw a line before processing as the rough datum of the initial processing. During processing, the drawn datum line should be leveled and aligned. In most cases, it is directly adjusted on the workbench by using a three-point jack support method. Such parts are generally more regular and have convenient press-fitting positions, but for complex thin-walled frame parts, there is no convenient press-fitting position, which is difficult to process and prone to clamping deformation

Some parts have high requirements for parallelism and perpendicularity. During the processing process, secondary clamping may be required, and the benchmarks may not be uniform. The accuracy requirements for parallelism and perpendicularity cannot be guaranteed.

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