Strength-strengthening method for use in super-thin complicated part processing

A technology of complex parts and processing process, applied in the field of strength enhancement during the processing of ultra-thin complex parts, can solve the problem that the strength and rigidity cannot meet the process system, etc., and achieve the effect of small processing deformation, ensuring dimensional accuracy, and high processing accuracy

Inactive Publication Date: 2007-11-14
中国航空工业第一集团公司第六一三研究所
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Problems solved by technology

[0002] At present, conventional machining methods are used to process thin-walled complex parts, and CNC machine tools with different numbers of linkage axes are selected according to the complexity of the parts. The wall thickness of the parts processed by this method is above 0.8mm. For ≤0.5mm and above The non-ferrous metal parts in the complex cavity are deformed or cracked due to their own strength and rigidity that cannot meet the force (clamping force, cutting force) of the process system during processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Part shape: The overall structure of the part is complex, consisting of two sets of space non-intersecting hole systems and a composite angle slope, the shape is mostly composed of free-form surfaces, and the overall wall thickness is 0.5mm.

[0021] (1) Preparation: According to the size and shape of the parts, prepare tooling containers, semi-finished parts, 70° low melting point alloys, stainless steel containers (2 pieces), and an induction cooker.

[0022] (2) Assemble the parts and tooling according to the positioning and fixed relationship, and check each mating surface.

[0023] (3) Melting the low-melting-point alloy in a water bath: put the 70° low-melting-point alloy (material composition ratio: bismuth: lead: tin = 13:8:4; place of origin: Beijing Iron and Steel Research Institute) in a small stainless steel container; Add water into another large stainless steel container, the water accounts for 1 / 3-1 / 2 of the volume of the container; put the small stainles...

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Abstract

The invention belongs to mechanical cool-working technology, which relates to an intensity enhancing method to process ultra-thin complex parts. The invention casts low melting point alloy outside the parts to process ultra-thin (<= 0.5mm) complex cavity parts. It can process ultra-thin products with different shapes to meet the lightweight requirements. It has small processing distortion and the roundness errors of the processed holes are controlled within 0.007mm. It has high processing precision and can realize multi-surface process with one clamping, which can guarantee the correlating size precision. The shapes of the workpieces can be designed as cuboids to facilitate the clamping and positioning.

Description

Technical field: [0001] The invention belongs to the mechanical cold working technology, and relates to a strength enhancing method in the processing process of ultra-thin complex parts. The invention adopts the method of pouring low-melting point alloys outside the parts to realize the processing of ultra-thin (≤0.5mm) complex cavity parts; to meet the processing of ultra-thin-walled products of different shapes and meet the requirements of light weight of products; processing deformation Small, the roundness error of the hole after processing is controlled at 0.007mm; moreover, the processing accuracy is high, one clamping can realize multi-faceted processing, and ensure the interrelated dimensional accuracy; the processing clamping and positioning are convenient, and the shape of the tooling can be designed as a regular cuboid shape, which is convenient for installation clip positioning. Background technique: [0002] At present, conventional machining methods are used t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/00
Inventor 董晓
Owner 中国航空工业第一集团公司第六一三研究所
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