Brad93
Member
- Messages
- 17,582
- Location
- Essex, United Kingdom
Could do with making one of these.
£6k plus vat seems a bit steep, maybe I could get them down.
What I don't know anything about is V rails or box type rails. Maybe something from China would do the job?
Rigidity is more important than accuracy. The carriage would need to have little deflection or the beam would be wobbling like mad during welding causing all sorts of issues.
To be honest I could make do with just an elevating column, and use our existing aluminium extrusion rails with carriage for the horizontal motion, but might as well do the job proper.
I've got access to one I can copy, but I've not really looked at it apart from seeing that the horizontal (traversing) arm is on inverted v ways like a lathe. Probably using eccentric bearings to adjust slack.
Most seem to have a counterweight inside the column. Easy enough to do. Motor acts on the counterweight which is just a braked motor with some duplex chain most I've looked at. Probably has a reduction box.
Horizontal carriage motion I guess would be some sort of stepper or servo encoder motor acting on a gear rack down the length of the column.
Anyone any experience with these?
£6k plus vat seems a bit steep, maybe I could get them down.
What I don't know anything about is V rails or box type rails. Maybe something from China would do the job?
Rigidity is more important than accuracy. The carriage would need to have little deflection or the beam would be wobbling like mad during welding causing all sorts of issues.
To be honest I could make do with just an elevating column, and use our existing aluminium extrusion rails with carriage for the horizontal motion, but might as well do the job proper.
I've got access to one I can copy, but I've not really looked at it apart from seeing that the horizontal (traversing) arm is on inverted v ways like a lathe. Probably using eccentric bearings to adjust slack.
Most seem to have a counterweight inside the column. Easy enough to do. Motor acts on the counterweight which is just a braked motor with some duplex chain most I've looked at. Probably has a reduction box.
Horizontal carriage motion I guess would be some sort of stepper or servo encoder motor acting on a gear rack down the length of the column.
Anyone any experience with these?