Grinding Wheel Balancing Stand
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A fixture for balancing grinding wheels.
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Informacje o modelu
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- Printables
- Kategoria
- Tools
- Licencja
- Creative Commons — Public Domain
This build was inspired by Clough42, but is my own design. The related Clough42 video is at this link :
- https://youtu.be/zUs_43BghHU
This stand should accommodate grinding wheels up to 8in (200mm) in diameter.
In addition to the 3D printed parts, the following additional items are required :
| QTY | ITEM | COMMENT |
| 4 | 608 Silicon Nitride Ball Bearing** 22mm OD x 8mm ID x 7mm width | dry - NOT lubricated |
| 12 | M4 x 20 socket head cap screws | |
| 12 | M4 hex nuts | |
| 1 | Arbor for grinding wheel | See section on this below. |
** Update June 7, 2023 : I also tried using 608 Full Ceramic Bearing 8mmx22mmx7mm Zirconia Oxide Bearing. These might be slightly better, but the difference is minor.
Assembly
Note : This print uses sacrificial “hole covers” as support material for printing the screw holes. This is a one layer thick fill in each hole which must be removed before assembly. I simply used a sharp razor knife to ream out each hole cover.
Start the assembly by placing the two bearings into the SideBrace1 piece. Place the AxleBox cover piece over the bearings and press into place. Insert hex nuts into the two recesses in the cover - these will be a tight fit (hint : screw a nut halfway onto one of the screws, and use the screw as a tool to push the nut into place). With the nuts in place, insert screws from the opposite side and screw into place. Do not over-tighten the screws - they need only to be firmly in place. Complete the second bearing assembly in the same way.
With the two SideBrace1 assemblies complete, attach the two assemblies to two of the Frame1 pieces using the SHCS screws and nuts. Do not over-tighten the screws.
Finally, add the two SideBrace2 pieces; again using the SHCS screws and nuts. Do not over-tighten the screws.
Arbor for Grinding Wheel
Included in this print is an experimental arbor adapter. This is intended to be used with 0.5" drill rod (also known as “silver steel”). Obviously, a 3D printed adapter is not the same thing as a precision ground commercial adapter; however, in my very simple initial tests it appears that it may be workable. Of course, an actual test arbor is preferable.
Note : The included arbor adapter is 3" TPF (3 inches of taper per foot), and is roughly based on the Sopko test arbor shown in the photo below. The printed adapter does not include a threaded section as it would simple be too thin - however, it seems to hold well with a simple friction fit.
Print Instructions
I printed the parts in PETG on a textured build plate - use the 3mf files provided; otherwise :
- 4 perimeters
- 10% rectilinear infill
Note : The screw holes should print with sacrificial “hole covers” - see the assembly section above.
CAD
The OnShape 3D CAD files for this are here :