Tool and method for pressing injector copper sleeve of cylinder head
A technology for press-fitting tools and fuel injectors, which is applied to manufacturing tools, metal processing, hand-held tools, etc., can solve the problems of cumbersome operation, poor adaptability, and crushed copper sleeves, etc., and achieves low cost, convenient operation and high efficiency. Effect
Active Publication Date: 2012-05-30
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
[0015] The purpose of the present invention is to propose a simple structure, convenient operation, high efficiency and low cost in view of the deficiencies such as cumbersome operation, high cost, poor adaptability, and crushed copper sleeve of the existing cylinder head fuel injector copper sleeve pressing technology. press-fitting tools and press-fitting methods
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[0043] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention, such as the fixing method of the steel ball, the steel ball pressing rod Appropriate alternative structures can be adopted for the limit mode of the end pressure rod and the like.
[0044] figure 1 It is a schematic diagram of the structure of the copper sleeve of the present invention before assembly. It is obvious from the figure that the copper sleeve 6 has a stepped surface and a tapered hole 20 . The inner step surface is just the surface to be pressed by the end pressure rod 5, and the tapered hole 20 is what the steel ball 7 will squeeze through.
[0045] figure 2 It is a schematic diagram of the structure of the bottom hole of the cylinder head 9 fuel injec...
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The invention discloses a tool and method for pressing an injector copper sleeve of a cylinder head. The tool comprises a steel ball pressing bar, a projecting sleeve, strong springs, an end face pressing bar and a steel ball, wherein the end face pressing bar is hollow; the steel ball pressing bar is sleeved in the end face pressing bar and is connected by way of sliding up and down in the end face pressing bar hole; the strong springs are arranged between the steel ball pressing bar and the end face pressing bar; and the projecting sleeve is installed outside the steel ball pressing bar. Inthe method, the tool is used for pressing the end face of the copper sleeve and the steel ball successively. The tool has the advantages of simple structure, convenient operation, high efficiency andlow cost.
Description
technical field [0001] The invention relates to an assembly technology of a cylinder head part of a diesel engine, in particular to a press-fitting tool and a press-fitting method for a copper sleeve of a fuel injector of the cylinder head. Background technique [0002] In order to meet the emission standards, the diesel engine cylinder head generally adopts four-valve technology, and the cylinder head injector hole usually adopts an expansion-joint copper sleeve structure: the lower end of the injector copper sleeve is designed as an inner cone surface, and the bottom of the cylinder head injector is The step hole, the middle of the small hole is processed with a ring groove; after the copper sleeve is pressed, the end face of the copper sleeve is close to the step surface of the bottom hole of the injector, and the inner cone surface of the copper sleeve is pressed into the small hole of the injector, and the end of the copper sleeve is turned over The edge is embedded and...
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IPC IPC(8): B25B27/06B23P11/02
Inventor 袁福吾卢健林宁杰罗刚莫运凤李佑长
Owner GUANGXI YUCHAI MASCH CO LTD