Splinedrive coupler - Toolgrinding and Slotting 

yeah we got that. Excellent as always, new Sub

Good to hear, and thanks for watching :)

Thanks! I will pin this comment as it gives good information.

They are involute because they are made by a roll forming operation. It's similar to knurling. It's very difficult to get straight spline faces when the tool doing the work is basically a round gear.

@@ReiniGrauer A rolled Spline is usually produced either with a flat tool that looks like a rack or internal gear. In either case the pressure needed is quite high. When I worked in the automotive industry the facility I worked at produced rear ends along with engines, stampings and finished cars. The axles had splines on both ends. The ones that went into the differential were straight. The ones for the rear hub assemblies were tapered if IIRC. Both were rolled. The internal splines in the mating parts were cut in Oil Gear pull Broaches. The Spider Gears wear cut in Geason Rev-a-Cycle gear cutters*. The Ring and Pinion were cut in Gleason Offset Hypoid Gear Cutting Machinery. They were cut in a Roughing Operation and a Finishing Operation. Material was forged 4140. When the teeth where being roughed the pinios were held by a collet on the Drive Shaft U-Joint diameter and center in the gear end. About the only noise you heard was the chips coming off the equipment ran so smoothly. Brilliantly designed machines. The entire machine could be dis-assembled in sections if there was a mechanical problem. The gear sets were then run as matched pairs in a Gleason gear lapper. Finished gear sets when set-up for testing in a quite room at proper lash setting made made any noise at all. The production department cut ratios from around 1:2.79 to 1:4.12. A seperate set of machines cut ratios up to 1:5.xxx for experimental, dealer installed and racing applications *The Spider Gears actually had the teeth rough forged.

I'm always trying to identify splines and trying to buy cutters,

@@mpetersen6 not necessarily. Spines are very often rolled with round tools. Either way, when you roll form a spline with either a rack or a rolling tool involute teeth are invariably going to be the result because the part is also round ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TNOd9I1sCXg.html

'Shelf Of Shame', mine has grown into a wing as in 'shelves' I've 'marked' my pieces as to keep track of where I F'd up & some times my F' ups actually work in other applications or test pieces In other words, I don't like throwing anything away

@@AtticusDraco I use the same process! I do not throw anything away either. I have saved or repurposed, so much material by doing this. Thanks Atticus!

Would that be the same as fretting corrosion?

Yes, another word for it.

I was thinking the same. Nothing makes your heart sink like seeing engine case halves fretting with each other!

Brian, nice of you to watch and reply, I watched your video this morning. Many thanks to all you machinists. Great skills and knowledge you command.

Thanks Brian, learned something. Rolling the profile makes complete sense and would create a involute without any effort.

He wasn't using the aluminum oxide stone to clean it as much as he was using it to break down the binder of the CBN matrix, to expose more CBN.

Science fair project will be the next video ;)

@@StefanGotteswinter Awesome. Somehow I knew you were gonna say that :-) Looking forward to it.

@@StefanGotteswinter Excellent!

@@StefanGotteswinter Bet HE wanted a PONY too!!😂😂😂😂😂

To correct something above -- involute splines are "typically" 30 degree, 37.5 degree or 45 degree. My brain was stuck in gears when I wrote the pressure angles in my original message.

Not going to italy anytime short ;)

@@StefanGotteswinter" This old Tony" is living in Italy, new for me

What, all one item would boring and besides you have already seen it. 😉

Machinist Wisdom :)

@@StefanGotteswinter We had a one guy doing a job in th he lathe one time. He's taking a light cut on fine feed and the loss walks. "That's not how you run a lathe." The boss jumps, cranks the tool out, puts thedepthof cut at around .125/3mm and kicks the feed in. That's right when the guy o the job says, "that was myfial cut". The boss never did that again 😁

Came here to comment this! She is from my hometown and taught music class at my elementary school!

That’s a Cat Stevens tune that he wrote back in the mid sixties! Good tune!

Cat Stevens original