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Cutting Splines

Cutting Splines

Cutting Splines

(OP)
Question: I need to have a shaft manufactured for an automotive gearbox application. The shaft has a variety of diameters and bearing surfaces plus 3 splined sections. What is the best and most economical approach? Having the shaft CNC manaufactured via CAD, or manually machining the component in a lathe. What machine is used to cut splines, internal and external?

Many thanks in advance,

RE: Cutting Splines

There are several approaches to accomplish you requirements.   As you don't say whether this is a one off or a production run I would contact these people and try to locate a shop that can handle your job by Rotary Broaching.  

http://www.slatertools.com/

RE: Cutting Splines

One way that did it was CNC milled the splines. It was a prod run of @500 shafts a day so investment in the 4 axis MORI vmc was worth it.

The cheapest way I have heard of is spline broaching.

tell us how u finally did it.


Quote:

Work Hard and Work Smart

RE: Cutting Splines

Splines on automotive shafts are generally rolled. Very expensive dies and equipment.  The next procedure is "hobbing" with something like a Barber Coleman hobber.  Determining what you want to make can be very difficult because the pressure angle on an automotive part may not be a common angle.  I buy hobs at Ash Gear.  So far I have assumed the splines are involute.  If they have straight sides, they can be made with a milling machine.

Robert Setree
www.advanced-grinding.com

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