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A heat treatment deformation control method for slide rail parts with unequal vertical rib heights

A technology of parts and 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 making it easy to manufacture and use

Active Publication Date: 2016-02-24
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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  • A heat treatment deformation control method for slide rail parts with unequal vertical rib heights
  • A heat treatment deformation control method for slide rail parts with unequal vertical rib heights
  • A heat treatment deformation control method for slide rail parts with unequal vertical rib heights

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Embodiment Construction

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

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

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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 part heat treatment deformation control technology, in particular to a heat treatment deformation control method for slide rail parts with unequal heights of aircraft vertical bars. Background technique [0002] The slide rail parts with unequal heights of the vertical ribs of the aircraft have a thin structure and are mostly deep groove structures with large planes and vertical ribs, and the heights of the ribs are not equal. The length is long and belongs to thin-walled parts. It is necessary to carry out multiple CNC machining processes, such as rough milling, semi-finishing, and fine milling. [0003] In the machining process 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 during the service process of the parts, resulting in stress ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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