04-22-2016, 06:39 AM
Not sure what happened there but I'm having a hard time typing after inserting a link, it wants to continue to underscore everything after that. Sorry guys, on to the post.
I didn't take a picture of actually boring the hole because I was concentrating so hard on trying to get it right on the measurement, I forgot.
![[Image: drillPulley.jpg?dl=0]](https://dl.dropboxusercontent.com/s/20n6c7cph6cr3jb/drillPulley.jpg?dl=0)
After the boring procedure, the large diameter was cut:
![[Image: turnLargeSize.jpg?dl=0]](https://dl.dropboxusercontent.com/s/r33if7jg204sgme/turnLargeSize.jpg?dl=0)
Then the small size with some Dykem for the old eyes:
![[Image: turnSmallSize.jpg?dl=0]](https://dl.dropboxusercontent.com/s/kwg5nvkqggxi0nw/turnSmallSize.jpg?dl=0)
The part was slotted with a parting tool and more markings were made:
![[Image: markPulley.jpg?dl=0]](https://dl.dropboxusercontent.com/s/e2cr5l8uc3jx2xb/markPulley.jpg?dl=0)
After much research, I realized that pulleys aren't just a simple part, and that different angles are used for different belt sizes and pulley diameters. The angle of the existing pulley on the machine is 34 degrees included as far as I can tell. The pulley that was made here is quite a bit smaller, so I used 32 degree for the larger one and 28 degree for the smaller one. The small one has a real tight radius for the belt being used. I don't know if these are the correct angles to use, but I hope they are close.
![[Image: cut28degree.jpg?dl=0]](https://dl.dropboxusercontent.com/s/qtmbq92beofhfzj/cut28degree.jpg?dl=0)
Cutting with cotton swab dipped in kerosene:
![[Image: cutOutside28.jpg?dl=0]](https://dl.dropboxusercontent.com/s/agb4s50j9z53t94/cutOutside28.jpg?dl=0)
Pulley almost complete and mounted on shaper ready to cut keyway with inside keyway cutter. Shaper keyway cutter
![[Image: KeywayCuttingSetup.jpg?dl=0]](https://dl.dropboxusercontent.com/s/hduefveehbne2q5/KeywayCuttingSetup.jpg?dl=0)
Keyway is finished and it cut beautifully:
![[Image: keywayCut.jpg?dl=0]](https://dl.dropboxusercontent.com/s/qnc1aj5jnxn4jfc/keywayCut.jpg?dl=0)
Not all is perfect in amateur land though, and I ended up drilling the set screw hole a little off set. But like my friend Kent and I always say when something is not perfect but will work "What's it gonna do....Not work?
![[Image: setScrew.jpg?dl=0]](https://dl.dropboxusercontent.com/s/01x5ruci4gp20wk/setScrew.jpg?dl=0)
Well that's it for now guys. I can't believe what has to happen to make a simple pulley, but I learned a lot. This is the first complex (to me) part I ever made on a lathe and I'm happy with the way it turned (ha ha ha) out.
Mark
I didn't take a picture of actually boring the hole because I was concentrating so hard on trying to get it right on the measurement, I forgot.
After the boring procedure, the large diameter was cut:
Then the small size with some Dykem for the old eyes:
The part was slotted with a parting tool and more markings were made:
After much research, I realized that pulleys aren't just a simple part, and that different angles are used for different belt sizes and pulley diameters. The angle of the existing pulley on the machine is 34 degrees included as far as I can tell. The pulley that was made here is quite a bit smaller, so I used 32 degree for the larger one and 28 degree for the smaller one. The small one has a real tight radius for the belt being used. I don't know if these are the correct angles to use, but I hope they are close.
Cutting with cotton swab dipped in kerosene:
Pulley almost complete and mounted on shaper ready to cut keyway with inside keyway cutter. Shaper keyway cutter
Keyway is finished and it cut beautifully:
Not all is perfect in amateur land though, and I ended up drilling the set screw hole a little off set. But like my friend Kent and I always say when something is not perfect but will work "What's it gonna do....Not work?
Well that's it for now guys. I can't believe what has to happen to make a simple pulley, but I learned a lot. This is the first complex (to me) part I ever made on a lathe and I'm happy with the way it turned (ha ha ha) out.
Mark