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Cylinder block assembly inlaid with copper bush and machining method for same

A processing method and cylinder technology, which are applied in the direction of fluid pressure actuating devices, etc., can solve the problems of sintered layer falling off, short life and high production cost, and achieve the effects of easy processing and production, cost reduction, and not easy to fall off.

Active Publication Date: 2014-04-02
龙工(上海)精工液压有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a cylinder block assembly inlaid with a copper sleeve and a processing method thereof, which are easy to process and produce, reduce production cost, have a simple cylinder sintering process, and have a sintered layer that is not easy to fall off. The production cost of the traditionally used cylinder components is high. During the work, the grinding is serious, the life is short, and the problem of sintered layer falling off is prone to occur.

Method used

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  • Cylinder block assembly inlaid with copper bush and machining method for same
  • Cylinder block assembly inlaid with copper bush and machining method for same
  • Cylinder block assembly inlaid with copper bush and machining method for same

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Embodiment Construction

[0042] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0043] A cylinder assembly inlaid with copper sleeves, such as figure 2 As shown, it includes a cylinder body 1. The material used in the cylinder body 1 is no longer a commonly used ductile iron casting, but is made of steel. The cylinder body 1 and the plunger matching hole are inlaid with a copper sleeve 3. The cylinder body 1 There is a sintered layer 2 on the mating surface with the distribution plate, a shaft hole 5 is opened in the middle of the cylinder body 1, and a hole 4 is opened on one side of the shaft hole 5 on the cylinder body 1, and a matching copper sleeve is installed in the hole groove 4 3. The depth of the hole groove 4 is the same as the length of the copper sleeve 3 . The steel parts can be No. 45 steel, 65Mn, 42CrMo, 40Cr or 38CrMoAl, etc.

[0044] In this embodiment, the cylinder body 1 is processed b...

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Abstract

The invention discloses a cylinder block assembly inlaid with a copper bush. The cylinder block assembly comprises a cylinder block, wherein a sintered layer is arranged on the matching surface of the cylinder block and a port plate; an axle hole is formed in the middle of the cylinder block; a hole groove is formed in one side of the axle hole in the cylinder block; the copper bush is arranged in the hole groove; and the cylinder block is machined from steel parts. The process route of the cylinder block assembly disclosed by the invention comprises rough turning, sintering, finish turning, spline drawing, copper bush press-fit, radial facing, nitrogen treatment and copper bush fine boring. The cylinder block assembly disclosed by the invention is easy to machine and produce, and capable of decreasing production cost; a sintering process for the cylinder block is simple; and the sintered layer is not liable to fall off.

Description

technical field [0001] The invention relates to a cylinder body assembly inlaid with a copper sleeve and a processing method thereof, belonging to the technical field of hydraulic products. Background technique [0002] The cylinder assembly is an important part of the hydraulic plunger pump and hydraulic motor. The design rationality and service life of the cylinder directly affect the quality of hydraulic products. [0003] The deficiencies of the prior art are the selection of cylinder material, the sintering of the sintered layer of the cylinder, the wear of the friction pair between the cylinder and the plunger, and the wear of the friction pair between the cylinder and the valve plate, which lead to serious grinding of the cylinder during work. Short life; large internal leakage, which seriously affects the use of the product. [0004] Traditionally used cylinder block components, the structure is as follows figure 1 As shown, there are deficiencies in the following ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14B23P15/00
Inventor 赵宁匡虎鲁启立
Owner 龙工(上海)精工液压有限公司
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