Turning milling spindle with permanent magnet synchronous motor

The indexing accuracy quasi stop accuracy of the electro spindle system of turning milling compound machine tool is an important index to check the accuracy of the machine tool spindle an important factor to affect the machining accuracy of the machine tool. In order to achieve the high indexing accuracy quasi stop accuracy of the electric spindle system, the international CNC turning milling complex machining center adopts the built-in spindle motor (referred to as the electric spindle), the spindle the motor rotor are assembled into one, reducing the impact of the intermediate transmission link on the spindle accuracy. When working, the rotation of the motor rotor drives the rotation of the main shaft. The speed ring position ring of the spindle rotation adopt high-precision feedback elements to realize full closed-loop control. The position signals collected by the feedback elements are processed by frequency division of the CNC system, so that the resolution of the spindle division can reach 0.001 ° (the minimum division unit of the spindle is 3.6 ") smaller, so that the spindle system of the machine tool has high division precision quasi stop precision. This problem can be solved well by turning milling compound electric spindle produced by Suzhou de Neng electric motor company.