Alternating-current permanent-magnet servo-motor direct-driven spiral extrusion device
A technology of permanent magnet servo motor and screw extrusion, which is applied in the direction of electromechanical devices, presses, stamping machines, etc., and can solve the problems of heavy weight and noise, complex structure, and large volume
Pending Publication Date: 2018-09-04
SHAANXI SCI TECH UNIV
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Problems solved by technology
[0003] At present, in motorized tapping processing equipment, the common feature of CNC tapping machine and pneumatic tapping machine is one or more sets of parallelogram support mechanisms, which are used to realize self-adaptive feed movement during motorized tapping , has defects such as complex structure, large volume, weight and noise
[0004] Therefore, the present invention proposes a screw extrusion device directly driven by an AC permanent magnet servo motor, which adopts the direct drive of an AC permanent magnet servo motor to realize the screw extrusion movement of the extrusion tool, and extrude the screw in the fixed nut to be processed. The internal thread raceway is press-formed, which overcomes the defects of the existing tapping machine and its tap manufacturing difficulties, and has good engineering practical value
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[0017] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0018] A screw extrusion device directly driven by an AC permanent magnet servo motor, comprising a stator core 1, a permanent magnet 2, a stator winding 3, a casing 4, a motor rotor 5, a resolver 6, a cover 7, a sleeve 9, and a nut Cover 10, shaft 11, bearing 12; stuffy cover 7 and nut cover 10 are respectively fixedly connected to the two ends of the casing 4, and the casing 4 forms the shell of the whole device;
[0019] The sleeve 9 is a spline through hole, and the center of the nut cover 10 has a threaded inner hole; the two ends of the sleeve 9 are supported in the inner holes of the two bearings 12; The transformer 6 is divided into two parts, a resolver stator and a resolver rotor, wherein the resolver stator is fixedly connected to the cover 7, and the resolver rotor is fixedly connected to the sleeve 9;
[0020] The shaft 11 is divided into an external sp...
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An alternating-current permanent-magnet servo-motor direct-driven spiral extrusion device is disclosed. A lead screw nut pair, internal and external spline slip pairs and one alternating-current permanent-magnet servo motor are integrated. An alternating-current permanent-magnet synchronous motor is taken as a driving motor. A motor rotor and an internal spline sleeve in the spline slip pairs aredesigned into one body. During the motion process of the motor rotor, the external spline segment of a shaft drives the shaft to rotate circumferentially. The screw thread segment of the shaft realizes the linear feeding motion of the shaft through the lead screw nut pair so that an extrusion tool installed on a shaft end portion realizes spiral feeding motion. The spiral feeding extrusion speed of the shaft end portion and moment control can be realized through controlling the output of the alternating-current permanent-magnet synchronous motor. The device is a ''zero-transmission''direct-driven device without a middle transmission component and has advantages that the structure is simple, transmission efficiency is high, the device is easy to control and so on.
Description
technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a screw extrusion device directly driven by an AC permanent magnet servo motor, which is used in conjunction with an extrusion tap to realize the extrusion forming of a spiral raceway with a fixed lead. Background technique [0002] Processing methods such as screw extrusion and helical drilling occupy a large proportion in mechanical processing, and have the advantages of high forming efficiency and high processing accuracy. They are commonly used mechanical processing methods for standard parts. As a typical screw extrusion processing method, tapping requires that the pitch of the tap is consistent with the parameters of the internal thread to be processed, that is, when the tap rotates one circle in the circumferential direction, the tap advances one thread lead along its own axis. Tapping is generally divided into motorized tapping and manual tapping. In motori...
Claims
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IPC IPC(8): H02K7/06
CPCH02K7/06B30B1/181
Inventor 赵永强崔鑫李瑞超侯红玲王长乾
Owner SHAANXI SCI TECH UNIV