Still trying to figure out a Spline is that a standard?
All you wanted to know about splines (or not) on power transmisson devices...axle shafts in particular...
By definition, a spline shaft
is a mechanical component can perform two functions, as an anti-rotational device or transmit torque to another device. These functions can be undertaken because the splines, or teeth or grooves of the gear, are machined into the length of the shaft.
There are a number of spline shaft designs currently in use today. Here are some of the most common ones:
This kind of spline shaft would have ridges or teeth that have a square profile.
This kind has tapered ridges along the shaft, which help in lowering the stress concentrations during gear operation.
This kind of spline shaft have specially designed teeth that taper or smoothen out towards the end face of the spline. This allows for angular misalignment during gear operation.
This kind of spline shaft would have a non-involute tooth designed spline. The said gear splines would be set at an angle allowing for more teeth to be set on the shaft itself.
This kind of spline shaft would either have parallel or involute splines where the ridges form a helix pattern across and around the shaft itself.