Method for machining variable-section nozzle ring blade of turbocharger

Abstract

The invention discloses a method for machining a variable-section nozzle ring blade of a turbocharger. The method includes clamping a blade (1) on a rotary fixture; manufacturing a grinding wheel (2) according to the shape of the blade; acquiring the ratio of the feeding width to the feeding depth of the grinding wheel according to ground quantities of a blade rod (3) and a lower end surface (4) of the blade; enabling the grinding wheel to rotate under the control of a computer and obliquely feeding the grinding wheel according to a ratio angle relative to the blade; grinding and machining the blade rod and the lower end surface of the blade simultaneously and automatically measuring the blade rod and the lower end surface of the blade; and automatically withdrawing the grinding wheel after machining requirements are met until a workpiece is machined. The method has the advantages that the blade rod and the lower end surface of the variable-section nozzle ring blade which originally needs to be machined on a plurality of different machine tools in a plurality of working procedures can be simultaneously machined on a single machine tool in a single working procedure, accordingly, labor, materials and the machining time are saved, and the machining efficiency is improved; and the blade machining precision and the mechanical strength of the blade can be guaranteed, and the machining quality can be improved.

Description

technical field [0001] The invention relates to a machining method, in particular to a machining method of a nozzle ring vane of a turbocharger. Background technique [0002] As we all know, a turbocharger is a product used to boost the air intake of an internal combustion engine and improve the working efficiency of the internal combustion engine. It is driven by the exhaust gas discharged from the internal combustion engine. The blades on the compressor end of the turbocharger installed on the intake pipe of the internal combustion engine rotate to perform work to increase the intake pressure, thereby improving the working conditions of the internal combustion engine and increasing the power of the internal combustion engine. Angle of rotation, to change the size of the exhaust cross-section of the exhaust gas, thereby adjusting the exhaust pressure of the turbocharger, controlling the speed of the turbocharger, and then controlling the components of the intake boost pre...

AI Technical Summary

Problems solved by technology

[0003]The existing turbocharger variable section nozzle ring blades are generally made of heat-resistant alloy precision casting or powder metallurgy material injection molding, sintering, and then mechanical processing, mechanical The processing firstly carries out the rough turning or finishing turning of the blade stem and the lower end surface of the blade, and then grinds different parts such as the blade stem and the end surface on different grinding machines. This processing method has many processing procedures and requires multiple clamping. Troublesome positioning, not only high labor intensity, low processing efficiency, high processing cost, easy to produce processing burrs, but also difficult to control processing quality, high processing reject rate, and difficult to guarantee the mechanical properties of parts

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