A processing method of internal spline: pull pin processing

A method for processing internal splines: The drawing process is described below for reference.

XNUMX. Internal spline broaching process

In order to ensure that the drive shaft andgearThe connection has high strength and good coaxiality after installation. The spline in the gear must have high dimensional accuracy and position accuracy.

The dimensional accuracy of the spline in the gear can be guaranteed by the machining accuracy of the broach teeth, while the position accuracy of the spline in the gear needs to be guaranteed by designing a set of process schemes.

XNUMX. Bottom hole processing technology of inner spline

When the front guide and back guide of the broaching tool are in contact with the bottom hole of the involute spline, it is used as the guide hole of the broaching process.Internal splineThe bottom hole must have high size, shape, and position accuracy to ensure that the gear inner hole and the involute inner spline index circle have a high degree of coaxiality.

Generally, the ratio of the depth to the diameter of the hole is more than 5:1 as deep hole processing, and the inner spline bottom hole with a depth of 60mm and a diameter of 5mm is regarded as a deep hole.

Deep hole machining is a special machining in a closed or semi-enclosed space. It has the characteristics of difficult chip removal, difficult cooling, difficult lubrication and low tool system rigidity.

XNUMX. Broach design and processing

The groove size and accuracy of the spline groove in the involute line are guaranteed by the broaching tool. The rationality and manufacturing accuracy of the broach design determine the machining accuracy of the spline groove in the involute line. Therefore, the design and processing of the broach are very important.

Compared with gear shaping to process involute internal splines, the broaching process has the characteristics of high efficiency and high precision, and is widely used.If there are any unclear points or related needs in the above description, you can consult EP for free.