Composite material long purlin milling flexible tool and clamping method of same

Abstract

The invention relates to a composite material long purlin milling flexible tool and a clamping method of the same. Long purlin axis positioning blocks are respectively arranged at the two ends of a standard platform, wherein the long purlin axis positioning blocks at one end are fixedly connected with the standard platform, and the long purlin axis positioning blocks at the other end are movably connected with the standard platform; a plurality of groups of supporting devices evenly distributed are arranged between every two long purlin axis positioning blocks, and each group of supporting devices are formed by a plurality of supporting blocks of which the supporting distance is 10-20mm, each supporting block at the middle of each group of the supporting devices is positioned under the axis of a long purlin, and the remaining supporting blocks are symmetrically distributed along the axis; L-shaped positioning plates are respectively arranged at the two sides of each group of the supporting devices, a height-adjustable clamping and compressing device is arranged on each positioning plate, and the internal end of each clamping and compressing device is provided with a rubber mat. The tool has the advantages that the milling and machining requirements of long purlins of different structures, different lengths and different widths are met, the production efficiency is greatly improved, the production cost is reduced, and meanwhile, the clamping method can guarantee the stability of composite material long purlins.

Description

technical field [0001] The invention relates to a composite material long truss milling flexible tooling and a clamping method thereof, and belongs to the technical field of composite material mechanical processing tooling. Background technique [0002] Long truss is a reinforced structure often used in the design of composite parts. According to its shape, it can be divided into I-type, T-type, L-type, E-type, Ω-type, etc. Aircraft designers choose the corresponding long truss according to the strength and weight requirements . Due to the precision of the structural design of aviation parts, the size of the long truss's lying side must be precisely controlled to meet the assembly requirements. Usually, the NC milling method is used to process the long truss's lying side. In the milling process, special tools must be used. The fixture is used to fix the long stringer to avoid affecting the machining accuracy due to vibration of the long stringer during processing. In the a...

AI Technical Summary

Problems solved by technology

In the actual part production, due to the needs of structural design, the same part may contain a variety of long stringers with different structures and different lengths. There is a corresponding subsidence, resulting in the diversity and complexity of the truss structure. In order to meet the requirements of milling processing, it is often necessary to design and manufacture multiple milling fixtures, which prolongs the production cycle and increases production costs. And these fixtures Usually only for one type of long truss structure, the repeatability is extremely poor, resulting in a waste of resources

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