Linear bearing and tubular linear motor

Abstract

The invention belongs to the technical field of motors, and relates to a linear bearing. The linear bearing comprises a mandrel, a sliding sleeve, a bearing seat and an adjusting part. The sliding sleeve is arranged in the bearing seat, the mandrel is slidably connected into the sliding sleeve, the adjusting part is arranged on the bearing seat, and the end, facing the mandrel, of the adjusting part abuts against the mandrel and is used for adjusting the angle of the mandrel in the circumferential direction. The invention also provides a tubular linear motor. The motor comprises a motor body,a stator, a mover, an end cover and the linear bearing, the mover and the stator are arranged in the motor body, the end cover is arranged on the side face of the motor body, the linear bearing is arranged on the stator, the mandrel can linearly move in the sliding sleeve in the axial direction, the adjusting part abuts against the mandrel, the adjusting part positions the mandrel in the circumferential direction, the mandrel is prevented from rotating in the circumferential direction, and the angle of the mandrel in the circumferential direction can be adjusted through the adjusting part.

Description

technical field [0001] The present application relates to the technical field of electric motors, and more specifically, relates to a linear bearing and a tubular linear motor. Background technique [0002] Linear motor is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. It can be regarded as a rotating motor cut radially and developed into a plane. The side evolved from the stator is called the primary, and the side evolved from the rotor is called the secondary. In practice, the primary and secondary are manufactured to different lengths to ensure that the coupling between the primary and secondary remains constant over the required travel range. Linear motors can be short primary and long secondary, or long primary and short secondary. Considering the manufacturing cost and operating cost, take the linear induction motor as an example: when the primary winding is connected...

AI Technical Summary

Problems solved by technology

[0003] The mandrel of the traditional linear bearing is cylindrical, and a single bearing does not have the function of positioning in the circumferential direction. When a single shaft is doing linear motion, the mandrel will rotate relative to the sleeve, which makes the linear bearing unable to be used in some occasions that require circumferential positioning. use

Images