I. Introduction
In today's market environment, mold manufacturers face many unfavorable factors, the price of commodity molds is gradually lower, the delivery time is getting shorter and shorter, the raw materials are rising, but the quality of the mold is higher. Many mold companies have advanced their high-speed processing equipment, upgraded their technical capabilities, and got rid of the traditional mode of operation to face challenges and win market opportunities. The high-speed machining technology greatly improves the milling speed of the mold, reduces the machining process and time-consuming clamping work, and achieves high machining accuracy and surface quality in one process, thus greatly shortening the mold production cycle.
High-speed machining technology is becoming more and more mature with the development of high-performance CNC machining equipment, tool technology and CAM systems. SESCOI from France has extensive and in-depth cooperation with world-renowned machine tool and tool manufacturers. Its research and development automation CAM system WorkNC generates high reliability, high efficiency and high quality tools to meet complex surfaces through optimized processing strategies. High-speed machining of molds, parts, and rapid prototyping products.
Second, the advantages of high-speed processing 1. Classification of high-speed machining
Mold processing is usually divided into two categories, one is processing for rough material removal (roughing, semi-finishing), and the other is processing (finishing) for the purpose of meeting product quality requirements, so high-speed machining According to the processing procedure, it is also divided into two categories:
1The high-speed or high-feeding chip is used to fully utilize the performance of the machine tool and tool in a short period of time, and a large number of cutting methods for removing the material to be cut (HSC or HSM, sometimes called high-efficiency machining).
2 High-speed machining is used to improve the surface precision and smoothness of molds and products, and the cutting ability of smaller tools can be improved by high-speed machining, which can directly process molds and product details instead of EDM.
2. Advantages of high speed machining
(1) High efficiency research shows that the speed of high-speed cutting can reach more than 5 times of ordinary chip processing. Due to the high cutting line speed or high feed rate, high-speed machining can cut more metal materials per unit time, thus cutting efficient.
(2) The product has high precision and excellent surface finish. When it is processed at high speed, it needs to adopt smaller Ap and Ae to improve the surface quality of the parts. High-speed processing technology can make the surface of the mold and product reach the mirror surface; With the increase of cutting speed, the cutting force will be reduced by 15~30%, most of the cutting heat will be taken away by the chips, so the thermal deformation of the workpiece is greatly reduced; the high speed and high cutting speed make the machine can easily cross the system vibration frequency. Therefore, the entire processing system has small vibration and stable operation, which is beneficial to improving the precision and surface quality of the machined parts;
(3) Shortening the process route Normal milling roughing can only be carried out before quenching. High-speed machining can directly process hard materials. High-speed machining improves the cutting ability of smaller tools and saves EDM processing. High-speed machining improves the accuracy of the mold. And surface finish saves time for tongs and polishing.
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