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Post by rogm1017 on Sept 2, 2019 1:27:05 GMT
I have assembled gantry, but when placed on a flat surface it seems to be torked a bit and one corner v wheel is not touching the surface. I loosened all screws and tried to realign but with no success. Everytime i tighten all the screws back down it gets torked again. Any possible solutions would be appreciated....thanks
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Post by Derek the Admin on Sept 2, 2019 18:25:54 GMT
What machine are you working with? If on the Carve King, the leads screws can be turned to being it square.
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Post by rogm1017 on Sept 2, 2019 21:05:14 GMT
I’m have the carve king. When the gantry is assembled the top and bottom slot extrusion bars are not parallel to each other. The bottom bar seems to be moved over on one end where the holes might not have been drilled precisely. I tried switching bars from top to bottom and end for end , but to no avail. I continued assembly thinking it might not be a big deal but when the x/z plate moves along the gantry it starts to bind on the end that isnt aligned correctly.. so i dont know which y end plate could be causing the issue.
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Post by Bruce on Sept 3, 2019 3:39:07 GMT
It might help if you could post some pictures of the issue you're having.
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Post by Derek the Admin on Sept 3, 2019 13:37:10 GMT
Yes, let's see some pictures please. I don't suspect hole placement at issue here because they are cut on the same waterjet file that has been run dozens or hundreds of times, and the jet would have a servo fault if it was out of position.
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Post by rogm1017 on Sept 3, 2019 15:12:12 GMT
Here are 2 pics, one of the rear and one of the front. Attachments:
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Post by Bruce on Sept 4, 2019 3:38:45 GMT
Yes, that doesn't look not right. Something is off there. If you take the 2040 V slot bars off the gantry plates and lay them on a flat surface are they flat?
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Post by rogm1017 on Sept 4, 2019 14:18:37 GMT
Yes bruce, i layed them out and all is sraight and square, even checked the ends to be sure they were square. So as a last resort i took gantry apart “again”...left one Y end screwed into the v slot bars and torked the bottom rail the opposite direction to realign with top bar to try and make them parallel again. Put gantry back together as per instructions and for the most part it was much better. Only off now a little less than 1/8 on both ends. All movement seems smoother now. Will continue assembly and see what happens. Thank you for your input....im sure you might see me asking for help again since this is my first cnc. Thanks again....
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Post by Bruce on Sept 4, 2019 19:02:18 GMT
Typically it helps to assemble everything but keep all the screws slightly loose. Then get everything aligned and "floated into place" then go and tighten everything down good. There is some play in the screw holes and slots.
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Post by Derek the Admin on Sept 4, 2019 19:05:13 GMT
I took at look at these. I hate to be bothersome, but could you also take a picture of the side plates themselves if you happen to take the rails off again (but please do not just for the sake of the picture). I'm not going to say there isn't an issue here, but knowing that they are cut on a proven run file of a closed loop servo driven machine and then put through QC review against a master where the inspector looks to make sure all the holes are there and line up, I don't think the holes are just off. The only way I see it is possible is if they skipped QC and the entire sheet got drug on the waterjet between hole pierces, but that would certainly cause a tip break and the operator would likely see it happen. My best advice here would be to use that straight edge to bring them to alignment with one another. There is a fair amount of free fitment in the holes that are used to mount the rail. Depending on where that is tightened down within that free fitment you can get nodding either way. I hope that makes sense and helps.
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Post by rogm1017 on Sept 5, 2019 15:38:52 GMT
Derek and bruce....thanks for all your input. The gantry is all back together and with the tweaks i made to get them parallel, everything looks like it might be good. Movement is smooth. I wont know for sure until i get past my next issue i’m having with the electrical/ electronic section. Working with support to find a resolution for that .
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