Template-based 3d Solid Modeling Software, Cutting Control Study

Today, Lost Foam Casting has become one of the developing directions in the technology of the Foundry molding process in countries in the world. The quality of the LFC casts lies greatly on the quality of its foam mould. In a single or small batch manufacture, foam moulding boards of LFC are generally produced by hand—foam mould is orientated by foam moulding boards of LFC, then are incised with electronic incising wires by hand.Because of the problem of low-quality and high-cost in the incising moulding boards of LFC, a notion is occur to design an economic type of NC system that can incise moulding boards of LFC and some kinds of other board stuffs in order to improve the incising quality of the moulding boards and board stuffs. The paper mainly narrates the whole design flow, the flow of the exploitation of the economic type of NC incising software, and the contents that designs an economic type of NC incising machine tool on the basis of the design.The design using a computer as a basic tool and using the mighty CAD/CAM functions, three-dimensioned entity-sculpted software—Pro/Engineer Wildfire 2.0, the design gets tow-dimensioned motion tracks form raw board stuffs or three-dimensioned entity sculpts of LFC casts which can be generated to NC program files for incising boards, then put the files into C program files that can be compiled to HEX files through the software that exploited by the advanced language of Visual C + + 6.0. Finally, after writing the MCU of ATMEL89S52 with HEX files, the design used the MCU to control tow four phase step motors, then control the incising tool to incise foam moulding boards of LFC and board stuffs. And in the part of program design, it emphatically explains how to exploit concrete steps of the economic type of NC incising software of the design using the advanced language of Visual C++ 6.0 as a tool, the theory of a MCU controlling steppers, the theory of the line and arc interpolation implements.The paper takes some foam mould of LFC as an example to narrates the whole design flow. In the end, the foam mould is also in allusion to experiment, using the software of Pro/Engineer Wildfire 2.0,the NC incised program exploited by Visual C + + 6.0, the MCU compiler of KEIL C51, and the hardware of one computer, one MCU of ATMEL89S51, and a four phases step motor.The planning desire can be got basically from the results of the experiments, then it indicates the NC system designed in the paper is basically right, and can be successfully apply to NC plasma-incised some good quality mold boards of LFC and board stuffs.