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A rolling device for aerospace ultra-small precision spherical coupling

A rolling device and ultra-small technology, which is applied in the field of mechanical cold working, can solve the problems of enlarged axial clearance, harsh working conditions at the closing part of the plunger seat, failure to meet product design indicators, etc., and achieve the effect of stable performance

Active Publication Date: 2018-08-10
NANJING CHENGUANG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the mouth is closed, a running-in test is required. When the plunger sub-components press out the oil in the high-pressure area, the plunger is subjected to the action of the high-pressure oil, the ball head of the plunger fits the inner socket of the plunger seat, and the bottom plane of the plunger seat is in line with the inclined plane. The plate is attached to transmit the hydraulic pressure to the swash plate; when oil is sucked in the low pressure area, the plunger ball head is attached to the mouth of the plunger seat, and the stepped ring of the plunger seat is attached to the chuck; At the moment of conversion, due to the existence of two gaps, the closing part of the plunger seat will bear a certain impact force. At this time, it is also the worst stress working condition affecting the closing part of the plunger seat, resulting in the enlargement of its axial clearance, which cannot meet the requirements. Product Design Index Requirements

Method used

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  • A rolling device for aerospace ultra-small precision spherical coupling
  • A rolling device for aerospace ultra-small precision spherical coupling

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Embodiment Construction

[0009] combine figure 1 , figure 2 , a rolling device for aerospace ultra-small precision spherical couplings, characterized in that it includes a coaxial cover plate 1, a screw sleeve 2, a push handle 7, a push rod 8, a first spring 9, and a pressure adjusting screw 10, It also includes a slide block 3, a pin 4, a top pin 5, a stop screw 6, and a second spring 13.

[0010] The cover plate 1 is provided with a through hole along the axis for the workpiece to be rolled. The left end surface of the screw sleeve 2 is attached to the right end surface of the cover plate 1, and the left end surface of the screw sleeve 2 is provided with a screw hole. The left end of the screw hole is evenly divided. There are three sections and the curvature of each section changes from large to small, and the curvature of the helical space on one side of the connection between two adjacent sections is the largest, and the curvature of the helical groove on the other side is the smallest. The pus...

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Abstract

The invention provides a rolling device for a spaceflight subminiature precision spherical surface coupling piece. The device is provided with sliding blocks with rollers, and the sliding blocks are arranged in spiral holes with different swivel nut curvatures; and when swivel nuts are rotated, the sliding blocks move in the radial directions of cross sections of the swivel nuts due to the different curvatures, and therefore plunger sub-units are extruded.

Description

technical field [0001] The invention designs a mechanical cold working technology, in particular a rolling device for aerospace ultra-small precision spherical coupling parts. Background technique [0002] The plunger pump is widely used in various aerospace products and engineering machinery due to its compact structure, high working pressure, high efficiency and convenient adjustment. The precision spherical coupling is formed by connecting the plunger seat and the plunger body through spherical fit. The performance such as the axial clearance after the connection has a significant impact on the working efficiency and service life of the oil pump. The plunger seat and the plunger body The connection adopts mechanical closing technology to ensure the quality. This technology uses external force to make the metal cold extrusion of the plunger seat to cause it to undergo plastic deformation, so that it covers the spherical surface of the plunger body along the spherical surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P9/02
CPCB23P9/02
Inventor 王雪梅胡雪梅王伟赵建军张小红何重庆狄斌
Owner NANJING CHENGUANG GRP