Manufacturing method of lost foam casting foaming mold

Abstract

The invention provides a manufacturing method of a lost-foam casting foaming mold. The invention is characterized in that the manufacturing method comprises the following steps: firstly, the three-dimensional CAD model of a casting part is manufactured, and a colophony prototype used for casting a blank of the foaming mold is manufactured through a rapid molding machine; secondly, a colophony prototype used for casting an electric spark working electrode is manufactured; thirdly, the inner cavity structure of the blank of the foaming mold is copied by using a colophony prototype with the same size with the casing part and silica gel; fourthly, the blank of the foaming mold is cast by using the composite ceramic shell casting technology; fifthly, the electric spark working electrode is cast by using the colophony prototype for enlarging the size of the casting part by 0.5-1.5 mm and the composite ceramic shell casting technology; and sixthly, the blank of the foaming mold is processed by using the electric spark and assembled to obtain the foaming mold. The invention is suitable for manufacturing the foaming mold with a complex-shaped inner cavity, can rapidly obtain the blank and the electrode of the foaming mold, enables the chrematistics of the arbitrary prototype with a complex shape through the rapid molding technology to be displayed more obvious as for the more complex shape and realizes the rapid manufacture of the lost-foam casting foaming mold.

Description

technical field [0001] The invention provides a method for manufacturing a foaming mold for lost foam casting, which belongs to the technical field of processing foaming molds for lost foam casting. Background technique [0002] In the process of lost foam casting, high-quality foam patterns are the basis for obtaining high-quality lost foam castings. At present, the foam patterns for lost foam casting produced in batches in China are formed by foaming molds. The quality and design of foaming molds Manufacturing speed is the key equipment for enterprises to win the harsh market competition. In the past, the production process of foaming molds generally used the product drawings provided by customers or the actual castings to design the mold structure, and then carried out blank production, machining and assembly. When producing foaming mold blanks, wooden molds are mostly used. For wooden molds with complex inner cavity shapes, the production cycle is long and difficult, an...

AI Technical Summary

Problems solved by technology

When producing foaming mold blanks, wooden molds are mostly used. For wooden molds with complex inner cavity shapes, the production cycle is long and difficult, and the accuracy of the shape and size of wooden molds is low, resulting in machining allowances for foaming mold blanks very big

In the machining process of foaming molds, CNC machining technology should be used for molds with complex curved surface shapes, which need to be completed through CNC programming and CNC machining, which will increase the difficulty of machining foaming molds and prolong the processing cycle. The processing equipment used is relatively expensive, which makes the processing cost of the foaming mold very high, and the mold manufacturing cost is very high