Thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons

A technology of parts and vertical ribs, which is applied in the field of aircraft manufacturing, can solve problems such as thermal expansion and contraction, thermal deformation, etc., and achieve the effects of improving efficiency, saving costs, and reasonable fixture structure

Active Publication Date: 2014-10-29
XI'AN AIRCRAFT INTERNATIONAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of tooling is different from ordinary machining equipment. It has to work repeatedly in the hot and cold cycle of high temperature heating and cooling, which will cause thermal expansion and contraction, and it will also face the problem of thermal deformation.

Method used

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  • Thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons
  • Thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons
  • Thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons

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Embodiment Construction

[0020] Referring to the accompanying drawings, the parts in the embodiment are slide rail parts with unequal heights of the neutral ribs of a certain type of aircraft, and the material of the parts is a Ti-6Al-4V forging, such as figure 1 As shown, the part is about 3 meters long, and the wall thickness and rib thickness are less than 4mm. Part 1 is composed of a planar wing plate 1 and two vertical ribs 2 with different heights. The upper and lower sides of the wing plate and the two vertical ribs The two sides of the plane are precision surfaces, that is, the surface where deformation must be controlled. The two vertical ribs with unequal heights are perpendicular to the plane flange. The root of the vertical rib is the stress concentration point. When the stress is released, the vertical rib will undergo a large deformation. The design theoretical shape data of the part is known.

[0021] In order to control the deformation of the part during heat treatment, the present inv...

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Abstract

The invention provides a thermal treatment deformation control method capable of well controlling a plurality of precise faces of a part and particularly provides a thermal treatment deformation control method for slide rail parts with unequal heights of vertical tendons. A deformation control clamp is comprised, a locating platform of the clamp has a theoretical appearance which is the same as that of the lower surface of a planar flange of the part, a positioning core is matched between two vertical tenons of the part, a positioning depression bar is an L-shaped structural block, and a column is formed by a plurality of square rigid frames fixed on two sides of the clamp body. After the part is placed on the upper surface of the positioning platform to be positioned, the deformation control clamp and the part are thermally treated together, and finally, the part and the deformation control clamp are separated.

Description

technical field [0001] The invention belongs to the technical field of aircraft manufacturing, and relates to a technology for heat treatment deformation control of parts, in particular to a method for heat treatment deformation control of slide rail parts with unequal heights of aircraft vertical ribs. Background technique [0002] Slide rail parts with unequal heights of vertical ribs have a thin structure, and most of them are deep groove structures with large planes and vertical ribs, and the heights of vertical ribs are not equal. The length is long and belongs to thin-walled parts. Numerical control processing is required for many times, and multiple processes such as rough milling, semi-finish milling, and fine milling are performed. [0003] During the mechanical processing of parts, great internal stress will be generated. If these internal stresses are not effectively released, the parts will be seriously deformed, or hidden dangers will be left in the service pro...

Claims

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Application Information

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IPC IPC(8): C21D9/00C21D11/00
Inventor 史春玲杜红王浩军田有安
Owner XI'AN AIRCRAFT INTERNATIONAL
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