- Joined
- Apr 9, 2012
- Messages
- 90
I have posted this on another site, but might be interesting for those that have not seen the photos.
Handy things to have: Made in the shop. Both have DC motors and I have a variable speed controller for power.
Motor pulley is twice the diameter as the spindle pulley. Both are flanged. The flat belt is a vacuum cleaner belt.
Spindle has a double sealed ball bearing on each end. Guard is from a 4 inch side grinder. Grinding wheels are standard tool post grinder wheels, rated for high RPM. Motor is from a 1/2" drill minus the gearbox. 5000 max. rpm, variable speed DC. I use a diamond point to dress the wheels. I also have chucks to fit the threaded spindle allowing the use of grinding points.
Big flanges are the order.
The central bolt screws into a slide that goes in the compound rest T-slot.
The Belt Grinder
The central slotted bar is a sliding tensioner. Spring on the back side. The two small wheels have internal ball bearings and are hard rubber contact wheels. Motor pulley is flanged.
The hex bar is bored for the shaft and has two locking set screws, allowing rotation of the grinder to either contact wheel grind or slack belt grind. The nuts are just props to position for the photo.
A good view of the tension spring.
I will put up more photos in a hour or so showing the belt grinder in use.
Handy things to have: Made in the shop. Both have DC motors and I have a variable speed controller for power.
Motor pulley is twice the diameter as the spindle pulley. Both are flanged. The flat belt is a vacuum cleaner belt.
Spindle has a double sealed ball bearing on each end. Guard is from a 4 inch side grinder. Grinding wheels are standard tool post grinder wheels, rated for high RPM. Motor is from a 1/2" drill minus the gearbox. 5000 max. rpm, variable speed DC. I use a diamond point to dress the wheels. I also have chucks to fit the threaded spindle allowing the use of grinding points.
Big flanges are the order.
The central bolt screws into a slide that goes in the compound rest T-slot.
The Belt Grinder
The central slotted bar is a sliding tensioner. Spring on the back side. The two small wheels have internal ball bearings and are hard rubber contact wheels. Motor pulley is flanged.
The hex bar is bored for the shaft and has two locking set screws, allowing rotation of the grinder to either contact wheel grind or slack belt grind. The nuts are just props to position for the photo.
A good view of the tension spring.
I will put up more photos in a hour or so showing the belt grinder in use.