Nowadays, in the sand mold manufacturing industry, the aluminum alloy formwork for casting is usually processed and manufactured by CNC machine tools. The so-called NC machining refers to compiling the specific machining design schemes such as pre-designed cutting method, tool path and tool parameters into the program code that can be recognized by the NC machine tool in the form of computer programming, and then inputting the generated code into the NC machining equipment, which then converts the machining data and controls the machine tool to complete the product processing process by itself, CNC machine tools can complete the whole process from rough machining to finish machining.
The manufacturing method of sand casting mould with NC machining has many advantages: firstly, the structure and dimensional machining accuracy of sand casting mould are high, which greatly improves the production and processing quality of sand casting mould. Secondly, the close combination of CAD three-dimensional modeling design, cam NC programming and machining process simulation and the machining process of NC machining equipment by using computer technology helps to realize the whole process control of sand mold from design to machining, provides measuring machine inspection for sand mold products, and strictly controls the dimensional accuracy of sand mold during machining, It can meet the requirements of high-precision machining. Moreover, using CAM technology for machining design can simulate the whole NC machining process, which is convenient to intuitively find out the problems existing in the NC program, clearly observe the size and position of cutting allowance, and also facilitate the correction of existing problems. The most prominent advantage of using CAM technology is that it greatly shortens the cycle for new products to achieve stable processing quality, reduces the consumption of production tools, and more meets the market requirements of fast product renewal.
In addition, compared with traditional machining methods, the combination of computer-aided technology and NC machining has the advantages, and it also has a good performance in the field of machining with high requirements; For example, the high-precision requirements of sand casting mold, the high-frequency changes of design scheme, the complex shape and cavity structure, and the fluctuating requirements of demand and production batch. With the increasing demand for high-quality products, CNC machining system occupies an irreplaceable position in the high-end machinery production industry.