Domestic machine tools and foreign machine tools are very different technical level, especially in the technical level of the speed difference is relatively large, but there are other aspects of the gap, such as processing accuracy, stability, reliability and service life are very Big gap. Xiaobian today mainly introduces the speed gap between domestic high-speed machining centers and foreign high-speed machining centers, where the speed refers to the spindle speed and three-axis moving speed.

Foreign high-speed machining center

Foreign high-speed machining center (Demag Ji)

   Foreign high-speed machining center speed

   Foreign high-speed machining center spindle speed is generally 2000-25000r / min, this is only a general high-speed machining center, due to the general high-speed machining center spindle speed can not meet the needs of customers, so foreign high-speed machining center in the spindle speed constant innovation, now Some high-speed machining centers using the aerostatic bearing and magnetic bearing spindle, the maximum speed up to 00000r / min; foreign high-speed machining center for three-axis feed, under normal circumstances using a high-speed rolling screw drive, which feed Moving speed of 40m / min or more, up to 90m / min, and now foreign high-speed machining centers are using the latest research and development of linear motor to drive three-axis feed, the speed is generally 80-20m / min.

Domestic high-speed machining center

Domestic high-speed machining center (Taiwan-NC V8)

 

   Domestic high-speed machining center speed

   Compared with foreign high-speed machining center, the domestic high-speed machining center is far behind the foreign high-speed machining center speed domestically produced high-speed machining center spindle speed 2000-8000r / min; domestic high-speed machining center feed rate is generally 30m / min , Less than 60m / min, domestic high-speed machining centers seldom adopt linear motors because domestic high-speed machining center can not solve the high temperature caused by high-speed linear motor movement, and the high temperature caused by high-speed movement will deform the motion guide rail and directly affect the machining accuracy. Domestic manufacturers of high-speed machining centers using linear motors are imported linear motor.

   In summary, the domestic high-speed machining center compared with foreign high-speed machining center in the speed there is a certain gap in speed, because China started late in CNC machine tool technology, it is far less than foreign CNC machine tools technology, statistics show that China's CNC machine tool technology In terms of foreign CNC machine tools with a difference of ten years away.