The machine tool selection should correspond to the mold cutting speed

In contemporary mold production, the requirements for the elegance and function of plastic parts are getting higher and higher, and the internal layout plan and appearance of plastic parts are becoming increasingly chaotic, and the mold layout plan for the continuous increase in the proportion of free curved surfaces is also becoming more and more chaotic. These have initiated higher requirements for mold processing skills, which not only guarantee high manufacturing accuracy and appearance quality, but also require elegant processing appearance. With the continuous and in-depth advancement of high-speed machining skills, especially driven by the continuous growth of related skills such as processing machine tools, cnc systems, CNC tool systems, and CAD/CAM software, high-speed machining skills have increasingly been used in mold cavities. Processing and manufacturing. CNC high-speed cutting and labor are the most important progress in the mold industry: manufacturing skills are advanced manufacturing skills that integrate high efficiency, high quality, and low consumption. Compared with the boring cutting process, the cutting rate and feed rate have been greatly improved, and the cutting mechanism is not the same.

High-speed cutting has produced a high-quality Benz for cutting. Its metal removal rate per unit power has increased by 30% to 40%, cutting force has been reduced by 30%, and the cutting life of tools has increased by 70%. The cutting heat is greatly reduced, and the low-level cutting vibration almost disappears. With the advancement of the cutting rate, the removal rate of the blank material per unit time has increased, the cutting time has been reduced, and the processing effect has improved, thus shrinking the product manufacturing cycle and improving the product's market competitiveness.

At the same time, the small fast traverse of high-speed machining reduces the cutting force, and the high-speed displacement of chips reduces the cutting and deformation of the workpiece, and improves the roughness of the cutting of parts with poor rigidity and thin-walled parts. Due to the decrease in cutting force and the increase in speed, the labor frequency of the cutting system is far from the low-order natural frequencies of the machine tool, and the surface roughness of the workpiece is most agile to the low-order frequencies, thereby reducing the surface roughness. In the process of machining high-hardened steel parts (HRC45~HRC65) of the mold, high-speed cutting can replace the processes of electric machining and grinding and polishing, thereby prohibiting the manufacture of electrodes and time-consuming electric machining, and greatly reducing the fitter’s work. The amount of grinding and polishing. To deal with some increasingly necessary thin-walled mold workpieces in the market, high-speed milling can also be successfully completed, and in the high-speed milling CNC machining center, the mold can be processed in multiple steps in one clamping.

High-speed machining skills have had a huge impact on the mold processing technology, changing the boring mold processing annealing → milling → heat treatment → grinding or electric pulse machining → manual grinding, polishing and other chaotic and lengthy process, and even high speed The cutting process replaces all the original processes. In addition to the direct machining of hardened mold cavities (especially semi-finishing and finishing), high-speed machining skills are also widely used in EDM electrode machining and rapid prototype manufacturing. A large number of production practices have proved that high-speed cutting skills can save about 80% of the manual grinding time in the subsequent processing of molds, save people-oriented costs by nearly 30%, mold appearance processing accuracy can reach 1m, and tool cutting effects can be doubled.