I started collecting parts and designing a router in December. I think I've got the design pretty well worked out, just looking for some input before I start building so I can make changes before hand if needed.
Here a some pics of what I have in mind.
Parts I've accumulated so far:
- Linear bearings are rollon 43 series compact rail
- Z-axis is a ball screw linear actuator from IAI with about 8 1/2" of travel
- 4.8:1 belt reduction using 10T and 48T XL pitch pulleys
- 3/4" wide L pitch open ended belts and 12T pulleys to drive X and Y-axis
- 4 IM483H drives w/ 40V PSU
- 44" 8020 45-4590 extrusion for the gantry beam
- 4 parker OS stepper motors (probably will need something else but they were only $50 for the lot and are brand new)
Parts I still need:
- electronics: BOB, motor cables, limit switches...
- bearings for the pulley shafts
- material for the base of the machine
- I'm sure there's more
For the design pictured I'm planning on using 1"x1"x1/8" square tubing as shown backed with a 1/4" plate for the base, the uprights for the gantry are 1/2" thick aluminum plate. Think this will be strong enough? My family owns a small steel supply shop so I have access to whatever steel I want if I need to beef up the design, however I move around a lot and would prefer to keep things as portable as possible. I'm just building the machine for fun and don't think I need really high tolerances however I'd like to make the best machine I can. I'm planning on doing some wood carving mostly but hell if I can teach my dad to run it it might turn into a plasma table for his shop.
Any input is welcome. If you think the design is crap let me know so I can change it.