Analysis and Research on Development Trend of High-end CNC Grinding Machine

Abstract

processing problem of complex and precise parts with small batch and many varieties can be solved by CNC grinding machine. It belongs to flexible and highly efficient automation machine tool, which represents the development direction of modern machine tool control technology. CNC grinding machine is a typical mechatronic product. Function specialization of CNC machine tool not only improves the productivity of the machine tool itself, but also greatly increases the production efficiency of all industries applying the special tool. It has especially prominent performance in automotive industry, and bottleneck of specialized production equipment has been prominent with acceleration of product updating speed and rapid diversification of social labor division. Flexible automation ability of CNC machine tool is greatly enhanced especially with the development of numerical control technology and performance improvement. Meanwhile, specialized demand on product is highly increased in all fields, more and more machine tool designs are deeply developed to the direction of flexibility. The machining efficiency of the machine tool has been largely beyond the specialization with continuous development of high speed and high precision technology. Integration of flexibility with high speed, high precision, intelligence, networking and modularization in concept level becomes important foundation of modern compound concept. Therefore compounding has become development direction of machine tool with realistic significance. Development of grinding machine cutting speed to ultra-high speed Ultra-high speed grinding usually refers to high-speed grinding with speed higher than ordinary grinding speed by more than five times (i.e. Vs≥150m/s). It was proposed by Salomon from German in l931. Its English name is super-high speed grinding or ultra - high speed grinding. Ultra-high speed grinding mainly has the following characteristics basically: (1) grinding efficiency is high, and feeding speed can be correspondingly improved due to grinding speed improvement, therefore significantly improving the grinding efficiency. (2) The processing quality is high, ultra-high speed grinding has higher machining precision, lower grinding surface roughness and better machining surface integrity compared with ordinary grinding. (3) Material consumption is low. It can prolong the service life of the grinding wheel and reduce waste of cooling fluid. (4) Application scope of grinding process is expanded. Good grinding effect is obtained on hard brittle materials, high plasticity materials and materials which are difficult to grind. Ultra-high speed grinding can become the most important part in grinding development due to the characteristics. Present situation and development of foreign high-speed grinding technology