Through type stepping linear motor

Abstract

The invention relates to a through type stepping linear motor. The stepping linear motor includes a screw rod, a rotor shaft, an external nut and a connection plate. The screw rod performs axial motion along the rotor shaft; the connection plate is axially fixed to the rotor shaft and rotates synchronously with the rotor shaft; and the external nut is axially fixed to the rotor shaft via the connection plate and rotates synchronously with the rotor shaft. Compared with the prior art, the through type stepping linear motor has advantages of improving the overall performance, and the like.

Description

technical field [0001] The invention relates to a motor, in particular to a through-type stepping linear motor. Background technique [0002] The existing through-type stepping linear motor is made of an internal thread structure inside the rotor shaft, which cooperates with the lead screw to convert the rotational motion of the motor into a linear walking motion by means of screw transmission, as shown in the attached figure 1 shown. figure 1 As shown in , the motor includes a lead screw 1, a front end cover 2, a bearing 3, a rotor shaft 4, a rotor 5, a stator 6, and a rear end cover 7. The existing through-type stepping linear motor mainly has the following problems: 1. For the through-type stepping linear motor in the form of the motor, the processing of the rotor shaft is relatively difficult, and the precision is not easy to control. 2. During use, because the rotor shaft and the lead screw are constantly rubbing during the transmission process, the life of the rotor ...

AI Technical Summary

Problems solved by technology

The existing through-type stepping linear motors mainly have the following problems: 1. For this type of through-type stepping linear motor, the processing of the rotor shaft is relatively difficult, and the precision is not easy to control

2. During use, because the rotor shaft and the lead screw are constantly rubbing during the transmission process, the life of the rotor will be shortened with the wear of the screw teeth

Moreover, with the continuous wear of the screw teeth, the repeated positioning accuracy of the transmission will continue to decrease, and eventually the entire motor will be scrapped because the accuracy cannot meet the use requirements, and the repeated use effect is not good.

3. Limited by the structure and function of the motor, the rotor shaft is generally made of metal materials, mainly stainless steel, copper materials or metal materials for injection molding. The choice of materials is relatively simple, which limits the optimization and upgrade of the transmission accuracy and performance of the screw drive.

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