Method for manufacturing turbo-charger blower impeller mold

Abstract

The invention relates to a method for manufacturing a die of a compressor impeller of a turbocharger, which mainly comprises the following steps: firstly, a data model of the compressor impeller is designed: a computer three-dimensional data model of the compressor impeller of the turbocharger is designed through pro / engineer computer software; secondly, an impeller physical model is made by a digital control processing center: on a five-shaft digital control milling machine, an integrated impeller physical model is processed by metal materials, such as aluminum ally, and the like that are soluble in acid easily; thirdly, a metal layer is cast on the outer surface of the impeller physical model: an even nickel or copper layer with 2-7mm is cast on the outer surface of the impeller physical model by adopting an electroforming method; fourthly, the acid dissolution is carried out: the metal impeller physical model is molten by acid solution. The die of the compressor impeller of the turbocharger made through adopting the steps can be used for casting the compressor impeller of the rubber turbocharger.

Description

technical field [0001] The invention relates to a manufacturing method of an impeller mold, in particular to a manufacturing method of a turbocharger compressor impeller mold. Background technique [0002] The compressor impeller is an important part of the turbocharger, its precision is directly related to the performance of the turbocharger, and the accuracy of the compressor impeller mainly depends on the precision of the impeller mold, so the manufacturing of high-precision impeller mold is very important for the turbocharger. The supercharger compressor is very critical. [0003] The current manufacturing methods of turbocharger compressor impeller molds are mainly as follows: [0004] 1. First process a physical impeller model of a low-melting point material, use the physical model of the impeller to make a resin female mold (ie impeller mold), and then use the resin female mold to make the rubber impeller, but this method has shortcomings. When making rubber impelle...

AI Technical Summary

Problems solved by technology

[0010] However, this method of manufacturing impeller molds has disadvantages: since the core of the impeller mold is spliced ​​by many modules, and the modules are processed piece by piece on a CNC milling machine, during processing, due to workpiece alignment, Due to the influence of man-made and objective factors such as the use of tools and the accuracy of the machine tool itself, there are large errors; since the mold is assembled from multiple modules, the cumulative error in the assembly process is not easy to control, which will make the shape and accuracy of each module There are certain inconsistencies; and because the modules are spliced, there are traces of seams on the turned-out impeller blank, which affects the surface finish; and the impeller made with such an impeller mold, the root of the impeller tip cannot be cleared into a right angle , there is seam flash, and the rubber mold must be repaired manually, which will cause the rubber mold to be easily deformed and the service life will be shortened

[0021] The disadvantage of this method of manufacturing impeller molds is: since the material of the cavity is resin, if the rubber mold breaks in the cavity when making the rubber mold, it will be difficult to clean, and even cause The scrapping of the impeller mold; the impeller mold made of resin material is easy to deform after a long time, and the life is relatively short, so it needs to be made frequently, which is troublesome