Abstract
A high thrust force bi-double-sided permanent magnet linear synchronous motor used in gantry-type five-axis machining center is designed and its performance was tested in this article. This motor is the subproject of Chinese National Science and Technology Major Project named as “development of domestic large thrust linear motor used in high-speed gantry-type five-axis machining center project” jointly participated by enterprises and universities. According to the requirement of the application environment and motor performance parameters, the linear motor’s basic dimensions, form of windings, and magnet arrangement are preliminarily specified through theoretical analysis and calculation. To verify the correctness of the result of the calculation, the finite element model of the motor is established. The static and dynamic characteristics of the motor are studied and analyzed through the finite element method, and the initial scheme is revised. The prototype of the motor is manufactured based on the final revised structure parameters, and the performance of the motor is fully tested using the evaluation platform for direct-drive motor component. Experimental test results meet the design requirements and show the effectiveness of design method and process.
Highlights
High-speed machining (HSM) is the main feature and one of the development directions of modern advanced manufacturing technology
The process ability and scope of application of high-speed ball screw are limited because of the existence of decelerating mechanism and other intermediate transport segments, it is usually suitable for the situation of moderate or light load, middle or low speed (10–40 m/min), and moderate or small accelerometer (0.5–1.0 g), so there are still certain disparities to meet the requirements of modern HSM.[1]
According to the requirements of the geometry size, the related performance parameters and the characteristics of the different types of PMLSMs, the double Utype structure are set as the main scheme of this linear motor
Summary
High-speed machining (HSM) is the main feature and one of the development directions of modern advanced manufacturing technology. According to the requirements of the geometry size, the related performance parameters and the characteristics of the different types of PMLSMs, the double Utype structure are set as the main scheme of this linear motor. The mover (primary windings) is armature winding and the stator (secondary) is PM This motor includes two U-type linear motors (it amounts to four linear motors with perpendicular arrangement), such a design scheme decreases the longitudinal dimension and improves the static and dynamic performances of the linear motor, such as thrust force, speed, acceleration, and so on, and reserves the advantages of U-type linear motor.
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