Re: New member lots to learn
Welcome Chris!
If you use toothed belt drive from your steppers to your ball screws you can get the movement speed you want with pulley ratios.
I don't have a gantry machine, but if I did I'd couple the screws with pulleys and a belt to eliminate any chance of them getting out of step ;-)
Re: New member lots to learn
Quote:
Originally Posted by
magicniner
Welcome Chris!
If you use toothed belt drive from your steppers to your ball screws you can get the movement speed you want with pulley ratios.
I don't have a gantry machine, but if I did I'd couple the screws with pulleys and a belt to eliminate any chance of them getting out of step ;-)
I have got it rigged at the minute with a crude belt drive to drive the gantry ball screws (so i can move gantry up and down with a power drill while im building it). I have considered running it from one motor but when i move the timing belt (20mm wide 8mm tooth pitch) manually there seems to be to much resistance. Hence why im thinking of direct drive and slave method. If i do choose the latter im thinking of putting a thinner timing belt at the far ends of the ball screw just to mechanical sync the ball screws in addition to electronically slaving the motors (this would be a safety / gantry allignment consideration).
Re: New member lots to learn
I'm not a model engineer. I am building the machine as a hobby and eventually manufacture some ideas to see if I can sell them as a sideline / hobby.
Re: New member lots to learn
Welcome to the forum! Would love to see some photos of the machine.
Quote:
Originally Posted by
chillybo
I'm not a model engineer. I am building the machine as a hobby and eventually manufacture some ideas to see if I can sell them as a sideline / hobby.
Ignore that line - its a phrase that appears at the bottom of all his posts (a signature) - Seems to confuse a number of people!
Re: New member lots to learn
Work area is a bit untidy at the moment
Re: New member lots to learn
Quote:
Originally Posted by
chillybo
Work area is a bit untidy at the moment
Excuses :frown: It helps to see pics. Its not a good idea to have a belt joining the two screws and then using two motors . Either 2 motors or 1 motor with one belt over both screws.
Re: New member lots to learn
having difficulty attaching pics bare with me
6 Attachment(s)
Re: New member lots to learn
Hope you can see these pictures of my machine that i have attached.
Re: New member lots to learn
Its not freestanding yet i'm waiting for some box section steel to arrive.