| Customization: | Available |
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| Logo Printing: | with Logo Printing |
| Size: | Middle |
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Strong loading capacity
Permanent magnet synchronous motorized spindle can meet the requirements of power index under the rated speed, strictly follow the law of constant torque, and has a strong load capacity in a small range.
No excitation current
The rotor surface of PMSM motorized spindle is pasted with permanent magnet steel, which directly forms the rotor magnetic field without excitation current. The power factor is close to 1. Almost all stator current is used for output torque, which has high working efficiency and can reduce motor loss.
The application of permanent magnet synchronous technology can save investment cost, improve efficiency, improve workpiece surface machining accuracy, expand the range of precision cutting and low speed power cutting, and realize energy saving and consumption reduction.
In addition, the new technology also has many disadvantages, such as maximum torque constrained by permanent magnet demagnetization, poor anti-seismic ability, limited high speed and so on. Therefore, in practical application, the appropriate motorized spindle should be selected according to the use requirements. It is believed that the progress of science and technology can not only improve the excellent performance of PMSM technology, but also improve its shortcomings, so that it can be more widely used in actual production.
High speed machine tool is the basis of high-speed cutting, and high-speed spindle unit is the core component and key technology of high-speed machine tool. Compared with the traditional spindle, the main form of high-speed motorized spindle is to directly install the stator and rotor of the spindle motor into the spindle assembly to form a mechatronic motorized spindle, which realizes the "Zero drive" of the machine tool system. It has the advantages of wide speed range, compact structure, small moment of inertia, fast response speed, easy to realize stepless speed regulation and precision control.But in the past, the motor used in high-speed motorized spindle is mainly asynchronous motor, the power loss of asynchronous motor is large, and the power consumption and heating of motor stator and rotor become the main heat source of high-speed machine tool. In addition, the spindle bearing in high-speed operation, there is a complex friction phenomenon, which also aggravates the heating intensity of the motorized spindle, so that the overall temperature of the motorized spindle increases, the thermal deformation is large, which seriously affects the machining accuracy of high-speed machine tools. If it is serious, the bearing will be burnt by metal bonding, which will lead to bearing failure.Compared with asynchronous motor, permanent magnet synchronous motor has the following advantages: small overall power loss and no rotor loss, higher efficiency; small motor volume; air gap flux density produced by rotor magnet, high power factor.
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