Gavztheouch's Mk2 Laser

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Re: Gavztheouch's Mk2 Laser

Postby gavztheouch » Wed Jul 25, 2012 10:38 pm

Quite possibly :( ... Still I learn't a hell of a lot from the install and I think il have a decent machine by the end of it if I iron out the remaining problems.
Timothy hay for rabbits delivered over the UK http://www.timothyhay.co.uk
gavztheouch
 
Posts: 144
Joined: Sun Dec 12, 2010 11:08 am
Location: (Stirling) UK

Re: Gavztheouch's Mk2 Laser

Postby gavztheouch » Fri Jul 27, 2012 10:35 am

After tweaking, postional error in the servo motor is now down to 20 pulses when engraving using the y-axis. This is from a starting error of 160 pulses before tweaking.

With 5000 pulses per rev and a pitch of 20mm thats 0.004mm per pulse, making 20 pulses 0.08mm

Starting to make some progress and hopefully the servos can be tuned better than it is now.

The next job is to staighten the ballscrews as at least one has been bent out of shape quite badly. After that I need to look at improving the x-axis. Currently im using a mxl pitch belt over about 1.4m of total travel. I reckon this would benifit from a wider and larger pitched belt. Mabey 3mm HTD 15mm wide.
Timothy hay for rabbits delivered over the UK http://www.timothyhay.co.uk
gavztheouch
 
Posts: 144
Joined: Sun Dec 12, 2010 11:08 am
Location: (Stirling) UK

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