Ball spline bearing

Abstract

The invention provides a ball spline bearing and belongs to the field of bearings. According to the invention, defects such as late delivery date caused by low transmission efficiency, short service life and complex structure in the prior art are solved. The ball spline bearing comprises a ball spline shaft, a ball splined hub and two bearing pedestals. The ball splined hub contains a jacket, a retainer and several sets of balls. The retainer is interference assembled in the jacket. The balls are symmetrically installed on the retainer and bulge out over the inner surface of the retainer. The balls and a rolling groove are tangent and the ball spline hub can reciprocate in a straight line. The two bearing pedestals contain a first bearing pedestal and a second bearing pedestal. The first bearing pedestal is installed at one end of the ball spline shaft. The second bearing pedestal is mounted at the other end of the ball spline shaft. A seal ring is arranged at two ends of the ball spline hub and contains a framework and a rubber ring. The ball spline bearing has advantages of high transmission efficiency, long service life, simple structure and the like.

Description

technical field [0001] The invention belongs to the field of bearings and relates to a ball spline pair. Background technique [0002] The spline usually includes a spline shaft and a spline sleeve. The spline is a linear motion system. When the steel ball in the spline sleeve moves linearly on the precision ground spline shaft, torque can be transmitted. The spline shaft has a relatively compact structure, can transmit excess load and power, and has a long life. [0003] On the basis of the traditional sliding screw, a ball screw shaft has been developed, which is a mechanical component composed of screw, nut, ball and other parts, whose function is to convert rotary motion into linear motion or convert linear motion into rotary motion . [0004] When the torque is applied to the splined sleeve or the splined shaft to the splined shaft, the three rows of load balls in the torque direction will transmit the torque in a balanced and uniform manner. When the torque directio...

AI Technical Summary

Problems solved by technology

[0005] This structure has the advantages of good synchronization performance, high positioning accuracy, and transmission reversibility, but has disadvantages such as poor transmission efficiency, low service life, complex structure and slow delivery time.

Images