The new trend of development of forming machine tool technology
High-speed nc machining originated in the early 1990s, it with electric spindle speed and to realize spindle motor to realize high speed line as the main feature, mainly used in mass production of automobile industry, etc. Purpose is to use high spindle speed and high-speed linear feeding movement of single axis machining center is to replace more spindle but realize high speed spindle speed and feed the combination machine tools, thereby in mass production, is highly flexible for quick update products, and reduce the production efficiency.
In the actual production of some famous car factory in China such as Shanghai general motors, and has been used in the production of high-speed machining centers to partly replace combination machine tools. The latest trend is to continue to expand its application scope. Some companies to reduce cost, need not, while using linear motor cooling fluid, hollow through increasing the diameter and lead the ball screw, Japanese Toshiba machine adopts hollow ventilation cooling fluid double ball screw to enhance driving stiffness. But no matter what form of ball screw, its maximum speed generally does not more than 50m/min, acceleration of 0.5 g ~ 1g HuLLERHILLE, however, the company nbh110 high speed machining center, with "dialog box structure moving parts quality. Therefore although with the ball screw, the X, Y, Z axis linear velocity can still worked up, the acceleration of 1g/min.
The application of high-speed machining is another area with cubicborazin tool for high speed milling of hardened steel, the mold machining or industrial very favorable. Finally, in pursuit of the precision mould hardened in general hope after finishing. In the past, the only available against hardened mould processing method is electric processing. Electrical discharge machining micro cutting process ablation is low, the efficiency. And high speed milling efficiency of hardened steel can be a few times, thus become higher than an ideal replacement of machining process. Although, to those of the deep and large moulds on the narrow slot, small arc surface curvature radius and the Angle of high speed milling powerless, but can be used for high speed milling machining, and thick, half power and finally processing, can greatly shorten the mold processing cycle. For those numerous abnormity and narrow and deep groove type mould, still can use electric processing methods. Therefore, electric processing will never be completely replaced.
