I ran into some trouble awhile ago,I had this pulley that should fit over a bigger shaft than the original, so I bored and reamed the hole, no problem there, went over to the shaper to make the keyway, so i put it in the vice and SLAM! the pulley bent in the vice!
So to avoid that happening again I'm going to make a simple dividing head and fit a 11" 3 jaw chuck that way I should be able to clamp future pulleys that needs broaching, without the possible danger of bending them!
I apologize for the large pictures.
This is about 62kgs of steel
Dividing head for the shaperFirst few cuts at 160rpm 0.15
Dividing head for the shaper
Dividing head for the shaper
Dividing head for the shaper300mm to 140mm (roughing) started from 160rpm 0.03 feed and 5mm diameter(2.5 depth) and ended at about 250rpm same feed and depth.
Dividing head for the shaper
Dividing head for the shaperFinished surface (130mm) about 315rpm 0.015feed and 0.5 in depth really nice result.
Dividing head for the shaperTreaded M130x1
Dividing head for the shaperDrilling 50mm hole
Dividing head for the shaper
Dividing head for the shaperBoring from 50mm to 90mm
Dividing head for the shaperThe 11'' chuck
Dividing head for the shaper