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Method of making plunger shoe assembly

A sliding shoe and plunger technology, which is applied in the field of preparation of plunger sliding shoe components, can solve the problems of large deformation, difficult control, and large axial clearance of plunger sliding shoes, etc., to achieve the effect of ensuring long-term normal and effective operation

Active Publication Date: 2017-07-21
浙江欧姆柯液压科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the manufacturing problems that the axial gap of the plunger shoe becomes larger and unstable, the deformation after heat treatment is large, and it is difficult to control, which tends to occur during the processing process of the prior art inverted plunger. A kind of preparation method of new plunger slipper assembly

Method used

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  • Method of making plunger shoe assembly
  • Method of making plunger shoe assembly
  • Method of making plunger shoe assembly

Examples

Experimental program
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Effect test

Embodiment

[0032] Example: Preparation of plunger shoe assembly

[0033] 1. Preparation of slipper boots:

[0034] Using 42CrMo steel as the substrate, the blank of the sliding shoe is processed by machining, and a layer of copper material with a thickness of 2-3 mm is sintered on the outer surface of the blank of the sliding shoe to ensure the required thickness of the copper layer. Drill the oil hole 2 in the middle of the blank to ensure the drilling.

[0035] Use CNC lathe to process the surface of the blank of the slide shoe, so that the radius R of the transition arc 4 of the ball head and neck 5 of the slide shoe is 0.5 to 1 mm, and the transition arc 4 cannot be small. This is where the stress is concentrated, and it is easy to cause fatigue of the slide shoe Fracture, so that the diameter of the ball head and neck 5 of the shoe is 3 / 4 of the diameter of the ball head 3 of the shoe, and the diameter of the ball head and neck 5 of the shoe is controlled at IT8 level.

[0036] Pu...

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Abstract

The invention provides a manufacturing method for a plunger and sliding shoe assembly. The method includes the steps of machining and gas nitriding of sliding shoes, machining of a plunger, and a nosing process, ionic nitriding and machining of the plunger and sliding shoe assembly. According to the manufacturing method, through the machining and gas nitriding of the sliding shoes, package-pressing of the plunger and the sliding shoes through a thread roller, and an ionic nitriding technology, the problems that in the prior art, a plunger and sliding shoes deform after being subjected to package-pressing and nitriding, an axial gap is widened, swinging is not flexible, and secondary package-pressing after deformation is difficult are solved.

Description

technical field [0001] The invention relates to the field of hydraulic pump parts processing, in particular to a method for preparing a plunger sliding shoe assembly. Background technique [0002] The plunger shoe assembly is the core part of the swash plate plunger pump. During the working process of the plunger pump, the plunger shoe assembly is forced to rotate by the return plate, and at the same time, the plunger continuously absorbs and discharges oil, that is, the plunger and the shoe are continuously detached and compressed. state. In the prior art, the plunger and the sliding shoe are generally hinged through a ball head and a ball socket, so that the plunger and the sliding shoe can swing in any direction at a certain angle. The structure of the plunger sliding shoe hinged by the ball is divided into two types, one is a copper or powder metallurgy clad steel plunger structure, the ball socket of the sliding shoe wraps the plunger ball head, that is, the so-called...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04C23C8/38
CPCB23P23/04C23C8/38
Inventor 方江平
Owner 浙江欧姆柯液压科技有限公司