Search found 9 matches

by jgorsk
Tue Dec 01, 2020 9:38 pm
Forum: Building the LitePlacer
Topic: What video functions to use for nozzle calibration?
Replies: 0
Views: 21001

What video functions to use for nozzle calibration?

I can't get the nozzle calibration to work. I tried different video functions.
The detected circle is usually the middle hole or the edge of the collar.
I was never able to get the software to detect either the inner nor the outer
edge of the nozzle 'working' surface.
by jgorsk
Sat Nov 21, 2020 7:23 pm
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

Thank you for sending the replacement X rails. Now the X direction movement is much smoother. There may be still a problem though. Movement in X direction when the gantry is in left rear corner of the machine generates noise. The noise is like high frequency vibrations. It’s not coming from the whee...
by jgorsk
Mon Nov 09, 2020 9:36 am
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

I used thicker washers to offset the wheels on X movement, most of the gap between X rails is eliminated but there is some twist in the beams, probably because they are of different lengths. The X wheels make noise on one side of the machine while they are quiet on the other side. BTW, what's the ma...
by jgorsk
Wed Oct 28, 2020 11:16 am
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

No worries.

Thank you very much for your support.
by jgorsk
Mon Oct 26, 2020 8:48 pm
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

An update on the gaps between the two parts of the X gantry. The gap is actually needed as the spacing between the wheels of the X-direction moving assembly is bigger than the spacing between the ways of the X-gantry. The wheels were pushing the two parts apart creating the gap. Different lengths of...
by jgorsk
Mon Oct 26, 2020 8:12 pm
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

It looks like the main culprit is the distortion of the flat washers at the wheel screws where the eccentric spacers are. That's the spacers between the wheels and the mounting plates. If the screw is torqued too much (I thought I didn’t use excessive torque but apparently I did), the washer becomes...
by jgorsk
Sat Oct 24, 2020 1:40 pm
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

The wheel mounting plates are bent/deflected only when the wheel screws are fully tightened. When the wheel screws are completely loose, the wheel plates are quite flat. The problem may be in the lengths of the front/back beams and the X gantry beam or they way I assembled the machine. I'll do some ...
by jgorsk
Fri Oct 23, 2020 11:06 am
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

Re: How sooth should the movement of X gantry be?

I checked the bearings, they are installed properly. When the wheel screws are not fully tightened, the v-grooves of the wheels don't make contact to both sides of the slide, just on one side like on the attached picture. When the eccentric spacer is turned, the v-groove falls in place and both side...
by jgorsk
Thu Oct 22, 2020 10:18 am
Forum: Building the LitePlacer
Topic: How sooth should the movement of X gantry be?
Replies: 10
Views: 10574

How sooth should the movement of X gantry be?

I started assembling assembled my LitePlacer and tried to do the wheel alignment but the movement of X gantry and pick up head as well may not be smooth enough. When the eccentric spacers are aligned, the movement is not completely free. There is quite some friction. I’m not sure if that’s correct o...