Extensible and retractable inner supporting tool

A technology of tooling and mounting holes, which is applied to auxiliary devices, manufacturing tools, metal processing equipment, etc., can solve the problems of inability to effectively control welding deformation, and the inability to put the overall inner supporting tooling into the shell, so as to achieve convenient operation and increase expansion and contraction Amplitude, the effect of eliminating welding stress

Active Publication Date: 2019-02-22
XIAN AEROSPACEMOTOR MACHINE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings in the prior art that the overall inner support tool cannot be placed inside the shell and the welding deformation cannot be effectively controlled, the present invention proposes a retractable inner support tool

Method used

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  • Extensible and retractable inner supporting tool
  • Extensible and retractable inner supporting tool
  • Extensible and retractable inner supporting tool

Examples

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Embodiment Construction

[0022] This embodiment is used for welding deformation control inner support tooling of a certain solid rocket motor. The length of the front flange is l=300mm, inner diameter=230mm, the length of the cylinder is l=800mm, inner diameter=300mm, the length of the rear flange is l=200mm, inner diameter=220mm, the external parts The length is l=30mm, the width=18mm, and the height=30mm. After assembling and welding the external parts, the roundness of the cylinder is required to be no more than 3mm, and the material of the parts is 30CrMnSiA high-strength steel.

[0023] The tooling of this embodiment includes two support plates 5, a sleeve 7 and a screw rod. Described screw rod has two, is respectively left-handed screw rod 6 and right-handed screw rod 8. Wherein: one end of the left-handed screw 6 is installed in a screw installation hole at the plane geometric center of a support plate, and the left-handed screw is rotated and matched with the screw installation hole; the lef...

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Abstract

The invention discloses an extensible and retractable inner supporting tool. One end of a left-handed screw is installed in a screw installation hole in the plane geometric center of a supporting plate, and the left-handed screw is in rotating fit with the screw installation hole. A left-hand thread at the other end of the left-handed screw is installed in a threaded hole in the center at one endof a sleeve. One end of a right-handed screw is installed in a screw installation hole in the plane geometric center of the other supporting plate, and the right-handed screw is in rotating fit with the screw installation hole. A right-hand thread at the other end of the right-handed screw is loaded in a threaded hole in the center at the other end of the sleeve. The extensible and retractable inner supporting tool has extending and retracting functions; in a shortened state, the extensible and retractable inner supporting tool can be put into a shell and then extends to support a cylinder, rigid restraining to the cylinder is achieved, and the welding deformation is reduced; and by means of stress relief annealing heat treatment through the belt tool, deformation stress is eliminated, andtherefore the cylinder circular degree after welding is guaranteed, and the circular degree of the shell is reduced to 2.5 mm from 10 mm.

Description

technical field [0001] The invention relates to the field of controlled welding deformation of solid motor casings, in particular to an internal support tool for controlling deformation during the process of welding external parts of a solid motor casing. Background technique [0002] The solid engine casing is mainly welded by the front and rear flanges and the cylinder, and the inner diameter of the front and rear flanges is much smaller than the inner diameter of the cylinder. After the shell is formed, various external parts need to be welded on the outer surface of the cylinder. Due to the thin wall thickness of the cylinder, the cylinder is easily deformed during the welding of external parts, which affects the roundness of the product. The conventional solution is to use tooling to rigidly support the cylinder inside the cylinder to reduce deformation. Currently, the commonly used internal support method is the overall inner support tooling, but the diameter expansion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/00
CPCB23K37/00
Inventor 杨军熊然刘丽莉秦占领刘晓蓓魁国祯王秉祥张珊李海荣赵武李锋锋谢晓辉
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY
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