Shaft coupling used between motor rotating shaft and spline connecting shaft

Abstract

The invention provides a shaft coupling used between a motor rotating shaft and a spline connecting shaft. The shaft coupling used between the motor rotating shaft and the spline connecting shaft comprises a left sleeve chuck, a right sleeve chuck, a shaft sleeve and a conical sleeve; a positioning key which is fixed in the axis direction is welded on the outer surface of the left sleeve chuck; the positioning key is clamped in a positioning groove in the motor rotating shaft; the shaft sleeve is connected with the left sleeve chuck; internal threads are formed on the inner side of the right sleeve chuck and are matched with external threads on the shaft sleeve; the two ends of the shaft sleeve are open; the inside diameter of the opening in one end, which is in contact with the left sleeve chuck, of the shaft sleeve is smaller than that of the opening in the other end of the shaft sleeve, so that a conical through hole is formed; the conical sleeve which is matched with the conical through hole of the shaft sleeve is arranged in the shaft sleeve; a shaft hole is formed in the conical sleeve; tightening openings are formed in the end surfaces of the left sleeve chuck and the right sleeve chuck; the inside diameters of the tightening openings are greater than the inside diameter of the shaft hole and smaller than the maximum diameter of the conical sleeve; and the conical sleeve is extruded to the shaft sleeve through the tightening openings by rotating the right sleeve chuck. The shaft coupling provided by the invention is simple in structure; force is applied to the spline connecting shaft uniformly; a fixing effect is good.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a shaft coupling used between a motor rotating shaft and a spline connection shaft. Background technique [0002] Couplings are used to connect two shafts (drive shaft and driven shaft) in different mechanisms to make them rotate together to transmit torque mechanical parts. In the milling lathe, on the one hand, the specification of the rotating shaft of the motor is fixed, which is different from the specification of the connecting shaft of the spline to be processed, and for different splines, the length of the spline connecting shaft is different; on the other hand, the rotation of the motor The size of the shaft should not be too long. Therefore, a coupling is needed to connect the rotating shaft of the motor with the connecting shaft of the spline to be processed to effectively transmit the rotational motion performance. [0003] Most of the current methods are to fix the shaft coupling...

AI Technical Summary

Problems solved by technology

[0003] Most of the current methods are to fix the shaft coupling on the connecting shaft of the spline to be processed with bolts, which has the following disadvantages: 1. Using the method of bolt fixing, the connecting shaft is partially stressed, the contact area is small, and the splined connecting shaft is easily damaged. When milling splines, spray water on the splines to cool down, and the local contact surface between the bolts of the coupling and the spline connection shaft is easily corroded, which affects the service life of the spline connection shaft; 2. Bolts are used to fix the spline connection shaft It is easy to deviate from the rotation center. When the motor drives the spline connection shaft to rotate, it is easy to cause the spline to vibrate, which is not conducive to the fine processing of complex splines and reduces the precision of spline processing; 3. It is fixed by bolts, with few fixed points and small friction. When rotating, especially when rotating at high speed, it is easy to slip or even slip, which will affect the processing and production

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