Cutting a gear with the shaper

I have some pinions to make that can't be cut with an involute gear cutter due to a lack of clearance on either side of the pinion. This is a test run of cutting the teeth with a single point tool on a shaper.

Category:

Howto & Style

Tags:

• shaper
• gear
• involute

[rattycorner]

Sorry folks, he's still not done the second one. One day maybe...

[flyingscrapyard]

Could you do a video explaining the setting up for generating a gear? I would like to do this sort of thing but it is difficult to find anyone who knows how. There would be some interesting calculations to get the dividing head to turn at the right amount as the tool passes over. Have you cut bevel gears like this as well?

[rattycorner]

I will try to have a go at it but it might take a month.

[Mrdiehard57]

The principle involved is the cutter is formed to cut a rack, i.e. ground as an acme threading bit, with the appropriate angles for the gear. The blank is on a spindle which has one end turned to the pitch diameter minus half the tension diameter of the wire which is anchored on one end, wraps once around the spindle, and then is anchored at the other end with a tension screw. As the table traverses, the spindle and blank are turned by the wire timed by the pitch diameter with wire factored in

[yugamibritten]

for those looking for more detail its basically this jig

neme-s.org/Shaper%20Books/Mich­ael_Moore/shaper%20gear%20cut.­pdf

[HawaiianMachinist]

I'd like to eventually add a shaper to what I have planned for my shop. I can make some shaft to shaft couplers to eliminate having to buy all the parts to build a 203-205 NP doubler transfer case. I got a small shop...

[ukracer999]

still watching. LOL

[andrewt9999]

Hi bud did you ever manage to get a more detailed instruction sorted??

Cheers

[SteelKahuna]

Looks like someone can use this same process for cutting splines...shaping custom inot shafts. Is that right???

[flyingscrapyard]

I'm currently making a pattern for a couple of angle plates for my shaper to do the same thing, only on a bigger scale as I have a Stanko 20 " shaper. I'll be looking forward to more videos on the subject. Good luck with yours. Best Wishes.

[ValExperimenter]

No gear train is required, the usual way to do this on a shaper is to machine a pulley a cable thickness less than the required average contact diameter and wind a single turn of cable around the pulley, anchored to the pulley in one place and anchored to a stationary point at each end. Normal table crossfeed gives the correct rotation with this method Steel tape appears to be used rather than cable here. Look up info on gear cutting to find out the correct contact diameter.

[shedfullnow2007]

Well the months up!

I like the little angle plate to carry the pinion.

I have a Elliot 10" shaper and am in the middle of tooling up.

Cheers