https://www.appropedia.org/Open-Source_Grinding_Machine_for_Compression_Screw_Manufacturing
Design Files: https://osf.io/ev6ta/
We build our own!
Changes to original design:
- Wood thickness: 12.2mm
- Conduit_OD: 20mm (we use stainless steel rods)
- Threaded rod for linear motion:
- M10 instead of 3/8"-16
- pulleys need to be adjusted due to different pitch
Materials
| Item | Amount | Who takes care? | Status | Purpose | Comment |
|---|---|---|---|---|---|
| Wooden pieces | Blue0cean | In progress | |||
| 3D printed PLA pieces | In Progress | ||||
| Belt | 3D-Printed belt to connect threaded rod and chuck pulleys | 3D print? or buy? | |||
| Steel rods 20mm | 140cm | Rails for the X and Y sliders to move on | |||
| Fastener: M8 x 30mm hex head bolt | 28 | ordered | Axle and secures M8 Bearings | ||
| Fastener: M8 Nylon Insert Locknut | 28 | ordered | Secures M8 Bearings | ||
| Fastener: M7 x 16mm Hex head bolt | 8 | ordered | Mounting the flange bearings | ||
| Fastener: M7 Hex nut | 8 | ordered | Mounting the flange bearings | ||
| Fastener: M3 x 12mm | 36 | ordered | Fasten 3D-Printed parts | ||
| Fastener: M3 Hex Nut | 36 | ordered | Fasten 3D-Printed parts | ||
| Fastener: 5/16"-18 x 1-1/4" Grade 5 hex head bolt ??? | 1 | Mounting angle grinder (dependent on angle grinder used) | Need to decide on angle grinder | ||
| Linear Motion: M10 threaded rod | 100cm | ordered | Moves X-slider for right-hand thread compression screws | ||
| Linear Motion: M10 nuts | 9 | ordered | Moves X-slider for right-hand hex nu compression screws | ||
| --- | Moves X-slider for left-hand thread compression screws | ignore for now (only do right handed crews) | |||
| --- | Moves X-slider for left-hand thread compression screws | ignore for now (only do right handed crews) | |||
| Hardware: 10mm Self Aligning Pillow Block Flange Bearing | 4 | Secures threaded rod and chuck | https://www.amazon.de/dp/B073L2LWN4/ | ||
| Hardware: 3-16mm Drill Chuck with SDS-Plus Shank | 1 | Blue0cean | done | Holds the stock material being machined | |
| Hardware: 608 ZZ Bearings | 24 | Linear motion, stock support | https://www.amazon.de//dp/B07RZ651J7/ | ||
| Fastener: Flat Head Wood screws 3x20mm | 36 | ordered | Secure individual pieces of plywood together | ||
| Fastener: Flat Head Wood screws 3x25mm | 4 | ordered | Secures the plywood sub-assemblies | ||
| Consumable: Type 27 Ceramic Grinding Wheel 4-1/2", 1/4" thickness | 2 | Machining the round stock | |||
| Angle Grinder | 1 |
