Special-shaped part machining method, fixture and fixture design method

Abstract

The invention provides a five-axis milling integrated positioning machining method capable of achieving special-shaped part space multi-location-degree control requirements, a fixture and a fixture design method. According to the positioning method, the machining element of a workpiece is determined by the fixture at first to position the workpiece, then, the direction of the fixture is adjusted through the position of the workpiece so that the workpiece can be clamped by existing surfaces of the workpiece, and clamping operation is completed at a time. According to the invention, the existingmachining idea that a workpiece is positioned and clamped onto a workbench through unstable surfaces at first, then, the direction of a fixture is gradually adjusted through a measuring tool or simulation machining mode to adjust the workpiece to align machining elements is broken through. In the existing machining method, because the workpiece is a complex structure body, an operator can often align the machining position by adjusting the fixture repeatedly, positioning is accurate and convenient after the method and the fixture of the invention are adopted, clamping is stable and reliable,adjusting is convenient, the working efficiency is high, and the product manufacturing quality is stable.

Description

technical field [0001] The invention relates to a five-axis milling combined positioning processing method, a fixture and a fixture design method that can realize the multi-position degree control requirements in space for special-shaped parts, in particular to a space position degree control for multi-space elements, and The shape is not correct, the reference is unstable, and the workpiece that can be used as the processing positioning reference cannot be found on the external body. The positioning method, fixture design method and fixture used for positioning processing. Background technique [0002] Due to the increasingly fierce international competition and the increasingly tense situation, the development of military weapons is also one of the fields of competition. With the development of science and technology, various new weapons are constantly upgraded. Components came into being. In order to meet performance requirements and ensure powerful functions, components...

AI Technical Summary

Problems solved by technology

However, special-shaped, spatially multi-position controlled parts do not have existing positioning datums or lines

Especially for sheet-welding parts and castings, the tolerance size and shape are unstable, and its shape itself has a surface or line, but its relationship with the processing position is unstable, or the surface is too small to meet the positioning elements. Reluctantly, it is easy Caused by inaccurate positioning, the processing size after machining is out of tolerance or the multi-space position after processing is poorly coordinated with the entire workpiece, there is an offset, or positioning is difficult, the operation process is slow, and the efficiency is not high

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