What is a high-speed machining center?
The high-speed machining center, as its name implies, is a high-speed machining process. A machining center that is 5-10 times faster than a conventional machining center is called a high-speed machining center. This type of machining center mainly focuses on machining efficiency and accuracy. Whether the 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 faster the main spindle rotation speed and the three-axis feed speed, the faster the cutting speed. The main influence of the processing speed comes from the main shaft and the three-axis (XYZ). Today I will introduce the main shaft of the high-speed machining center. The high-speed machining center generally adopts the direct spindle and the electric spindle. most. Next, I will introduce the rotation speed of the electric spindle.
High-speed machining center motor spindle speed
No matter what spindle is used in the high-speed machining center, the rotation speed is more than 12000r / min. The rotation speed of the high-speed machining center using the electric spindle is at least 18000r / min. Because the bearings used by the electric spindle will affect the rotation speed, different bearings are used. The speed of the electric spindle is different. There are three kinds of bearings used in general electric spindles, which are ceramic ball bearings, aerostatic bearings and magnetic bearings. The rotation speed of the electric spindle using ceramic ball bearings is generally between 18000-40000r / min; the rotation speed of the electric spindle using magnetic bearings is 100000r / min; the rotation speed of the electric spindle using air static pressure bearings can reach 160000r / min; The speed of the electric spindle with different bearings is different.
Machining Center Spindle Conclusion
The spindle of the machining center has a high technical content and is also one of the most important parts of the machining center. There are few domestic manufacturers capable of producing spindles, so the speed of the domestically produced electric spindle is not as high as that of the foreign-made electric spindle, and the domestic electric spindle is not currently available. Ability to use aerostatic bearings and magnetic bearings, even with such high speeds.