Difference between revisions of "DIY Laser/XY Gantry"
| Line 1: | Line 1: | ||
| + | =Background= | ||
RussleH and [[User:Lwk|'RepRap' Matt]] ([[User talk:Lwk|talk]]) took a look at the work is of the IMP Pick and Place at Ciseco<br/> | RussleH and [[User:Lwk|'RepRap' Matt]] ([[User talk:Lwk|talk]]) took a look at the work is of the IMP Pick and Place at Ciseco<br/> | ||
Pictures here<br/> | Pictures here<br/> | ||
| Line 58: | Line 59: | ||
===Ball Screw costs=== | ===Ball Screw costs=== | ||
| + | These prices have come from Zapp Automation ( | ||
Parts required include: | Parts required include: | ||
| + | Ball screw 25mm diameter, 25mm Pitch: | ||
| + | 2 x 600mm @£6/100mm = £72 | ||
| + | 1 x 900mm @£6/100mm = £54 | ||
| + | |||
| + | End mounts: | ||
| + | 3 x floating 25mm diameter @£30 = £90 | ||
| + | 3 x fixed 25mm diameter @£60 | ||
Revision as of 12:18, 18 October 2013
Background
RussleH and 'RepRap' Matt (talk) took a look at the work is of the IMP Pick and Place at Ciseco
Pictures here
https://www.dropbox.com/sh/bhjxykpmvo0xxca/QPXxOIEow-/IMP
Locking a magnetic tape linear encoders, simlar to used on the PnP
This can give very high accuracy position feed back and at high speed
http://www.machine-dro.co.uk/digital-readout-systems/magnetic-tape-linear-encoders.html?p=1
Specifications
Size: Minimum 600mm x 900mm
Speed:
- 1000m/s for scan (X axis)
- 500mm/s for Y axis
Type of Gantry
Possible driver systems
- Fixed motor and looped belt to carriage
- Carriage mounted motor and fixed belt
- fixed motor driving a leadscrew
- fixed motor driving a ballscrew
Most lower cost laser cutters use belt drives.
Most larger machines use ball screws. Here are notes on the two ideas:
Belt Drive
Advantages
- Low cost
Disadvantages
Belt Drive costs
- XY gantry for DIY laser is available here for $950. The cutting size is 900mm x 600mm
Ball Screws
More information on ball screws can be found here:
Advantages
- High precision
- Used in commercial designs
- Unusual and interesting - not been done for table top lasers before.
Disadvantages
- Need to build this with high precision
- No DIY design available
Ball Screw costs
These prices have come from Zapp Automation (
Parts required include:
Ball screw 25mm diameter, 25mm Pitch: 2 x 600mm @£6/100mm = £72 1 x 900mm @£6/100mm = £54
End mounts: 3 x floating 25mm diameter @£30 = £90 3 x fixed 25mm diameter @£60
Type of Motor
Motors for each of the above could be one of the following
- DC motor
- stepper motor
- brushless servo motor