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Combined milling method of shell body of bearing ball socket swing nozzle and fixture thereof

A processing method and technology of bearing balls, applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve problems such as poor nozzle sealing performance, improve processing accuracy and processing efficiency, uniform clearance, and reduce scrap rate effect

Active Publication Date: 2013-08-21
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect of poor sealing performance of the nozzle caused by the separate milling of the bearing ball socket swing nozzle in the prior art, and provide a method that can ensure that the size of the bearing installation hole in the nozzle is consistent and coincides with the central axis Combination Milling Method of Bearing Ball and Socket Swing Nozzle Shell

Method used

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  • Combined milling method of shell body of bearing ball socket swing nozzle and fixture thereof
  • Combined milling method of shell body of bearing ball socket swing nozzle and fixture thereof
  • Combined milling method of shell body of bearing ball socket swing nozzle and fixture thereof

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Experimental program
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Effect test

Embodiment 1

[0034]For a bearing ball-socket oscillating nozzle housing, the inner spherical diameter of the fixed nozzle housing is SR130 mm ± 0.05 mm, and the unilateral gap between the fixed nozzle housing 1 and the movable nozzle housing 2 is required to be 0.1 mm to 0.2 mm , The spherical center of the fixed nozzle shell, the installation hole in the swing shaft, the center axis of the movable nozzle shell and the mounting hole outside the swing shaft coincide, and the positional degree does not exceed ±0.03mm.

[0035] The combined milling method for bearing ball and socket swinging nozzle casing comprises the following steps:

[0036] 1) Install and process the fixed nozzle shell: such as Figure 5 As shown, the fixed nozzle shell blank 10 flange 11 is fixed downward on the fixture, connected and fixed with the fixture, and 12 M15 screws are tightened symmetrically to ensure a firm connection. The fixture is provided with a support ring 7, and the support ring 7 The inner wall has ...

Embodiment 2

[0046] For a bearing ball-socket swinging nozzle housing, the inner spherical diameter of the fixed nozzle housing is SR200 mm ± 0.08mm, and the unilateral gap between the fixed nozzle housing 1 and the movable nozzle housing 2 is required to be 0.15mm to 0.3mm , the center axis of the fixed nozzle shell, the inner mounting hole of the swing shaft, the center axis of the movable nozzle shell, and the outer mounting hole of the swing shaft coincide, and the positional degree does not exceed ±0.05mm.

[0047] The combined milling method for bearing ball and socket swinging nozzle casing comprises the following steps:

[0048] 1) Install and process the fixed nozzle shell: such as Figure 5 As shown, the fixed nozzle shell blank 10 flange 11 is fixed downward on the fixture, connected and fixed with the fixture, and 12 M15 screws are tightened symmetrically to ensure a firm connection. The fixture is provided with a support ring 7, and the support ring 7 The inner wall has an up...

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Abstract

The invention discloses a combined milling method of a shell body of a bearing ball socket swing nozzle and a fixture of the shell body of the bearing ball socket swing nozzle. The milling method comprises the following steps: mounting and machining a fixed nozzle shell body, machining a movable nozzle shell body in a matching mode, carrying out combined milling, and carrying out machining to remove the locating boss at the lower end of the blank of the movable nozzle shell body. The fixture achieving the milling method comprises a flange bottom plate, a central rod is arranged in the center of the flange bottom plate, a supporting ring is arranged on the lower portion of the central rod in a coaxial and sleeved mode, the bottom portion of the supporting ring is fixedly connected with the flange bottom plate, a flange used for placing the blank of the movable nozzle shell body is arranged on the inner wall of the top portion of the supporting ring, and a movable pressing plate used for pressing the blank of the movable nozzle shell body is arranged on the upper portion of the central rod in a sleeved mode. The bearing ball socket swing nozzles manufactured through the combined milling method and the fixture pass through the checking of multiple times ground tests, product quality completely meet design requirements. The combined milling method of the shell body of the bearing ball socket swing nozzle and the fixture can not only be used for processing the shell body of the bearing ball socket swing nozzle, but also be used for processing control of other similar combination products.

Description

technical field [0001] The invention relates to a solid rocket motor bearing ball socket swing nozzle, in particular to a bearing ball socket swing nozzle casing combined milling method and a fixture thereof. Background technique [0002] In the field of solid rocket motor manufacturing, thrust vector control technology is also called thrust steering technology, which controls the maneuvering flight of missiles by controlling the jet flow direction of the nozzle of the rocket motor. At present, commonly used thrust vector control devices include flexible swing nozzles and ball-and-socket swing nozzles. Such as Figure 1~3 As shown, the bearing ball-and-socket swing nozzle is a kind of ball-and-socket swing nozzle, which mainly includes a fixed nozzle casing 1, a movable nozzle casing 2, a pair of swing shafts 3, sealing rings and other components. The gap between the nozzle housing 2 and the fixed nozzle housing 1 is filled with sealing putty, and the nozzle has a one-way s...

Claims

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Application Information

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IPC IPC(8): B23P13/02B23Q3/00
Inventor 徐明亮余天雄晏述亮周大华胡稳淼
Owner 湖北三江航天江北机械工程有限公司
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