What is a high-speed machining center? High-speed machining center, as the name implies, high-speed cutting processing, a machining center with a processing speed of 5-10 times that of a conventional machining center is called a high-speed machining center. This type of machining center mainly focuses on machining efficiency and accuracy. Whether a high-speed machining center can perform high-speed cutting depends on the rotation speed of the main shaft and the feed speed of the three axes. The higher the rotation speed of the main shaft and the feed speed of the three axes, the faster the machining speed. The main influence of processing speed comes from the main shaft and three-axis (XYZ). Today I will introduce the main shaft of high-speed machining centers. High-speed machining centers generally use direct-coupled spindles and electric spindles. Among them, high-speed machining centers with electric spindles are used. most. Next, the editor will introduce the rotation speed of the electro-spindle.
Rotation speed of electric spindle of high-speed machining center
The speed of the high-speed machining center is above 12000r/min no matter what spindle is used, and the speed of the high-speed machining center using the electric spindle is at least 18000r/min or more. Because the bearing used in the electric spindle affects the speed, different bearings are used. The speed of the electro-spindle is different. Generally, there are three types of bearings used in electric spindles, namely ceramic ball bearings, aerostatic bearings and magnetic bearings. The speed of the electric spindle using ceramic ball bearings is generally between 18000-40000r/min; the speed of the electric spindle using magnetic bearings is 100000r/min; the speed of the electric spindle using air static pressure bearings can reach 160000r/min; this shows that , The speed of the electric spindle with different bearings is different.
Machining center spindle concluding remarks
The spindle of the machining center has a high technical content, and it is also one of the most important parts of the machining center. There are few domestic manufacturers capable of producing the spindle. Therefore, the speed of the domestic electric spindle is not as high as that of the foreign one, and the domestic electric spindle currently does not Ability to use aerostatic bearings and magnetic bearings, even if they are used, they can’t reach such a high speed.
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