01-21-2010, 04:38 AM
|
| | | Join Date: Jan 2010 Location: Switzerland
Posts: 1
| |
Hello, 
I've been visiting these boards since the last 6 months regularly, and I'm pretty convinced that I'm finally ready to built my own router table.
The design is going to be a basic mobile gantry, 3 axis cnc (MDF based). The design will 20" * 30". I'll use Mach 3 to control it. The problem I'm having is concerning the electronics, like I live in Europe I simply don't have access to the famous Geckodrives 
I was thinking of buying here: http://www.slidesandballscrews.com/ (If you got good alternatifs, don't hesitate posting them)
What I'm thinking of: Breakout Board: Uniport (Click for information) ($81.00) - Five optical isolated inputs with internal power jumpers.
- X/Y/Z/A buffered outputs with 30mA drive capacity.
- Three 16A @ 250V AC Single pole relays.
- Charge pump protection on all outputs and relays.
- USB powered, only consumes 250mA with all relays energised.
- Optional 5 volt power connection.
- LED indicators for power, charge pump, power save and all three relays.
- Uses standard parallel cable and A to B USB cable.
Stepper Driver (3x): ($72.00) PM752 Microstepping Driver (Click for information) - High performance, cost-effective
- Supply voltage up to +75 VDC
- Output current up to 5.2A
- Self-adjustment technology
- Pure-sinusoidal current control technology
- Pulse input frequency up to 300 KHz
- TTL compatible and optically isolated input
- Automatic idle-current reduction
- 16 selectable resolutions in decimal and binary, up to 51,200 steps/rev
- Suitable for 2-phase and 4-phase motors
- Support PUL/DIR and CW/CCW modes
- Short-voltage, over-voltage, over-current protections
Servo Motor (3x) SY60STH86-3008 Nema 23 (Click for information) ($40.00) - Step Angle 1.8 Deg
- Step Angle Accuracy 5% (full step, no load)
- Resistance Accuracy 10%
- Inductance Accuracy 20%
- Temperature Rise 80OCMax.(rated current,2 phase on)
- Ambient Temperature -20OC~+50OC
- Insulation Resistance 100M Min. ,500VDC
- Dielectric Strength 500VAC for one minute
- Shaft Radial Play 0.02Max. (450 g-load) Shaft
- Axial Play 0.08Max. (450 g-load) Max.
- radial force 75N (20mm from the flange)
- Max. axial force 15N
420 dollar total What do you think of it?
Thank you very much in advance =)
Ps. I wish to add that I have quite some experience using CNC Cutters, laser cutter, prototyping & 5-axis machinery (however I can't program the last one on my own  ). A few examples of past work:    
Last edited by Stiggero; 01-21-2010 at 09:11 AM.
|
Similar Threads 
Linear Mode
