Method for producing sample-piece mold using cement

Abstract

The invention relates to a method for manufacturing an automobile sample mould by cement, which is used for automobiles and includes the following steps: a. a simple convex model is processed by using the traditional method and a wax sheet with the same thickness of a stamping plate material is pasted on the convex model; b. a concave model matrix is casted, a space about 30mm is reserved as the space for filling post cement; c. the upper surface and the lower surface of the casted concave model matrix is flat-processed to be parallel; d. the concave model matrix is placed on a platform, and the convex model pasted with the wax sheet is buckled on the concave model matrix so as to form an assembly by connection and fixing, and then the assembly is turned over; e. high-strong alumina cement is used for pouring; and f. the assembly is placed for a period of time, and after the solidification formation of the cement, the convex model is detached, the modeled surface of the cement is polished, and then a concave model body with the matrix of casting and modeled surface of cement is obtained The method shortens the manufacturing period of the mould and reduces costs of manufacturing and materials.

Description

technical field [0001] The invention relates to the manufacture of automobile moulds, in particular to a method for making simple molds for automobile prototypes by using cement. Background technique [0002] Most cars have to make prototypes for road tests, collisions and many other tests before they officially enter production, and use the test data to correct the design parameters of the vehicle. The prototype mold developed for the prototype car requires the characteristics of short production cycle, simple structure and low cost. At present, the usual practice in the industry is to only make simple molds for molding, and other processes to complete sample production through laser cutting and manual assistance. At present, the basic methods for most automobile mold manufacturers to make simple molding molds are to adopt three methods: integral cast iron, machinable resin as the molding surface, and low melting point alloy as the molding surface. Cast iron sample molds ...

AI Technical Summary

Problems solved by technology

Cast iron sample molds have the advantages of long life, but they have the disadvantages of long cycle time, complete CNC machining of convex and concave model surfaces, and high manufacturing costs; machinable resin has short cycle time, but the resin price is relatively expensive, and it also requires complete surface CNC machining Disadvantages of processing

Although low-melting-point alloy sample molds do not need CNC processing, the cost of low-melting-point alloys is expensive and heating is required during the production process. However, general stamping mold manufacturers do not have heating equipment, which is not easy to promote widely.