3 Jaw Lathe Chuck

thingiverse

UPDATE\nDurwin Pye has refined the Scad file, making it top-notch now,\nI have included it in the list of files for reference-\nAfter printing other designs that didn't meet my needs, I took on the task myself and came up with this one.\nCaution: This is a custom plastic chuck made with precision limits!\nIts specifications are as follows: 101mm diameter, 59mm thickness plus 25mm jaw height.\nWith special thanks to: Parametric Involute Bevel and Spur Gears by GregFrost (http://www.thingiverse.com/thing:3575) Customizable Spiral Generator by walter (http://www.thingiverse.com/thing:58406) for their hard work UPDATE\nDifferent jaw materials were printed, tested, and added to the documentation - along with photographs: ABS, Best grip Flexi at 85% infill ..Flexible, but excellent gripping ability. PLA ......................3rd place, decent grip, though may cause breakage if tightened too much NYLON.................. equally ranked 3rd, comparable grip performance. Special thanks to MrArrow1961 for sharing his reverse jaws on thingiverse.com/thing:624814 Don't forget to check out the excellent assembly video created by yuri9999! http://www.thingiverse.com/make:155862 As requested, I won't be sharing the messy Scad file for now, but keep an eye out for its inclusion at a later date. Durwin Pye helped clean up the Scad file. Instructions\nReference photos have been added, please see them below: 1 face housing 1 rear housing (bolt hole recommended for stability or 10mm hex) 1 scroll 1 gear ring 3 drive gears 3 jaws: numbered for assembly purposes You'll need an M8 hex key for the drive gears - mine was a snug fit. Printer settings: * Layer height: 0.25mm * Honeycomb infill: 35% * Slicing software: slic3r 1.1.7 * Nozzle size: 0.4mm Double-check the print code before printing, especially perimeters around holes Assembly hardware: * 7 M3 x 8mm screws for scroll attachment to gear ring (don't overtighten) * 3 M4 x ~40mm screws to hold drive gears in place * 6 M4 x 20-30mm screws to secure back plate * 1x M10 bolt and nut for the drive shaft Required hand tools: Small files, sandpaper, and drill bits. Important notes: Be cautious when removing print supports from face housing; they might be stubborn - be patient! Use a file if necessary to get a smooth fit. Test-fit jaws in the housing first before adding other parts. Filing might be required. Now that everything is fitted correctly: Attach scroll and gear ring together loosely Insert 3 drive gears Screw in M4 locking screws Ensure gears turn smoothly, then insert jaw1 - as you see it start pulling into the thread, proceed with jaw2 and then jaw3. Finally, secure the back plate.