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View Full Version : Finished the shaft and gears today.



jcarter
02-05-2008, 06:34 PM
I got the bushings in yesterday so I was able to machine the shaft and gears today.The toolpost grinder you see was given to me complete with an assortment of internal and external shafts and grinding wheels.It's an old one but it worls well.I ground the shaft just enough to clean it up then bored the bushings to fit.
http://img.photobucket.com/albums/v679/j-carter/IM002511.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002514.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002515.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002520.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002522.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002523.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002524.jpg
http://img.photobucket.com/albums/v679/j-carter/IM002530.jpg

tattoomike68
02-05-2008, 06:56 PM
Thats a nice job. This is a good picture...

http://img.photobucket.com/albums/v679/j-carter/IM002514.jpg

CCWKen
02-05-2008, 11:52 PM
Fabulous Job!
Here's a tip: Treat grinding just like you would turning--With a large overhang (2X diameter), use the tailstock with live center or some support. You'll get a better finish when grinding. I also noticed you NEED a wheel dresser.

darryl
02-06-2008, 01:00 AM
Looks nice. I see the slanted teeth and then realize that the gear is free to turn on the shaft- there's going to be some side force imparted to that gear by whatever drives it. I suppose that's balanced out by the side force that gear applies to the gear it drives. Seems to me that it's going to put an off-balance load on the bushing. Does that make any sense to anybody? - not that there's anything to do about it-

BobWarfield
02-06-2008, 01:10 AM
JCarter, love the pix and projects! Good on you for protecting your machine from the grit!

CCKwen, that is such good advice. Most HSM's spend too little time on improving rigidity, whether via a live center or a follow/steady rest. I'm one of the worst offenders and I shall resolve to do better!

Best,

BW

jcarter
02-06-2008, 11:13 PM
Thanks guys.Ken, you're right about the wheel dresser. I do have a diamond wheel dresser but it was at my other shop.I had considered supporting the shaft in the tailstock. I didn't think it would be necessary since I was only grinding less than a thou per pass. But I'll definately use it next time.