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Eccentric machining method for excircle of piston

A processing method and piston technology, applied in metal processing, metal processing equipment, metal processing machinery parts, etc., can solve problems such as poor flexibility of eccentric processing, poor dimensional stability of workpieces, complicated manufacturing tooling, etc., and achieve high practical value and convenient operation , The effect of simple processing method

Inactive Publication Date: 2012-05-02
CRRC DALIAN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires special eccentric tooling, which is complicated to manufacture, has a long processing cycle, and has poor flexibility in eccentric processing.
Repeated clamping of fixtures makes the dimensional stability of the processed workpiece poor

Method used

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  • Eccentric machining method for excircle of piston
  • Eccentric machining method for excircle of piston
  • Eccentric machining method for excircle of piston

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Experimental program
Comparison scheme
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Embodiment Construction

[0020] The specific embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] figure 1 It is a flow chart of the eccentric machining method of the piston outer circle of the present invention.

[0022] First of all, on the CNC machine tool with rotary axis function, the piston is positioned and tightened. Secondly, select the milling cutter according to the processing efficiency, the roughness of the processed surface, and the material of the processed material. Then construct the mathematical model of the milling cutter running track, where R represents the blank radius of the machining piston, ε represents the eccentricity, ρ represents the distance from the actual processing point of the milling cutter to the center of the circle, θ represents the angle between ε and ρ, and Create macro programs on the machine tool. Enter the original value of each parameter. Then run the macro program to process the pist...

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Abstract

The invention relates to an eccentric machining method for the excircle of a piston. The method comprises the following steps: positioning and straining a piston on a numerical control machine tool which has a revolving shaft; selecting a milling cutter according to machining efficiency, roughness of a machining surface and a machining material; constructing a mathematical model of the running track of the milling cutter and writing a program into the numerical control machine tool; inputting original data of each parameter; operating a macro program to machine the piston; completing machining as operation of the macro program finishes. According to the invention, the machining method can carry out eccentric edge-cutting machining on the excircle of a variety of pistons; operation is convenient; the defect of a long period in manufacture of turning tooling in conventional eccentric machining of pistons is overcome; flexibility of eccentric machining is realized; varieties of machining pistons greatly increase; on-site batch machining of pistons in enterprises can be carried out; product quality is easily guaranteed.

Description

Technical field: [0001] The invention relates to an eccentric processing method for a piston outer circle, in particular to an eccentric processing method for a locomotive piston outer circle. technical background: [0002] The piston is the heart of the locomotive engine, and it bears alternating mechanical loads and heat loads during engine operation. It is one of the key components in the engine with the worst working conditions. As locomotives have increasingly strict requirements on the power, economy, environmental protection and reliability of the engine, in order to reduce the friction work loss of the engine, reduce fuel consumption, noise and emissions, the piston needs to have heat resistance, wear resistance Sex, smooth guiding and good sealing function. In order to meet the above functional requirements, most of the current pistons are made of light and high-strength new materials, and they also have strong technological characteristics in cutting processing. U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00B23Q15/007
Inventor 于惠洋杨磊丛新春
Owner CRRC DALIAN INST CO LTD
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