Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 27, 2016 03:10AM |
Registered: 10 years ago Posts: 1,035 |
Re: Looking for a Horizontal XCarriage that has the nozzle just below the rods May 27, 2016 05:36AM |
Registered: 9 years ago Posts: 776 |
Looking for an efficient Horizontal XCarriage May 27, 2016 06:01AM |
Registered: 10 years ago Posts: 1,035 |
Re: Looking for an efficient Horizontal XCarriage May 27, 2016 05:50PM |
Registered: 10 years ago Posts: 1,035 |
Re: Looking for an efficient moving XY setup May 27, 2016 06:44PM |
Registered: 10 years ago Posts: 1,035 |
Re: Looking for an efficient Horizontal XCarriage May 28, 2016 01:04AM |
Registered: 11 years ago Posts: 1,401 |
Re: Looking for an efficient Horizontal XCarriage May 28, 2016 03:40AM |
Registered: 10 years ago Posts: 1,035 |
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ggherbaz
Unless you are planning on using thick rods and metal Y carriages, your movement in the X axis will swing your Y carriages
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ggherbaz
Best desig is X and Y axis at the plane.
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ggherbaz
besides you are not accounting for the drive shaft that will move your Y carriages been so long will flex and create torque issues (be sure to use correct size to prevent it).
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 12:10PM |
Registered: 11 years ago Posts: 1,401 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 02:05PM |
Registered: 10 years ago Posts: 1,035 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 02:29PM |
Registered: 11 years ago Posts: 1,401 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 03:18PM |
Registered: 10 years ago Posts: 1,035 |
Re: Looking for an efficient Horizontal XCarriage May 28, 2016 05:06PM |
Registered: 9 years ago Posts: 776 |
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realthor
I am sure I've missed a lot actually I know of a few more I've missed in order to have a few issues solved at a time. I am especially talking about a coreXY configuration here so you must be referring to the belts that have to make a 90 deg turn to the XCarriage and, because the XCarriage is higher, the belt but be at that level forcing the YCarriage to rotate upon itself, right?
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 05:15PM |
Registered: 9 years ago Posts: 776 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 05:21PM |
Registered: 10 years ago Posts: 1,035 |
Re: Looking for an efficient Horizontal XCarriage May 28, 2016 05:38PM |
Registered: 9 years ago Posts: 776 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 05:53PM |
Registered: 10 years ago Posts: 1,035 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 06:13PM |
Registered: 9 years ago Posts: 776 |
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realthor
@lkcl:
1) For the life of me I can't reverse-engineer what I meant there... but it was basically related to my belts being above the Y rods and also above the X rods, thus, because of this height, is pulling to rotate the YCarriages during functioning;
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2) I don't understand the matrix thing but then again is past midnight here and I am quite tired.
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3) ggherbaz's suggestion is of course the usual linear bearing housing that can be bought for less money from China (SC<#>[L]UU).
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 28, 2016 06:20PM |
Registered: 9 years ago Posts: 776 |
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realthor
Ok, I know what you mean about the ever so slight rotation about the Z axis. That can easily be done.
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2) I was referring to the rotation of the YCarriage on the X axis as the belts are offset from the YRods center and tend to pull on the carriage from above, trying to take it down (like pulling a tree to take it down)... That is what is being resolved by having the nozzle right at that exact center of rotation.
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 04:25AM |
Registered: 9 years ago Posts: 776 |
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realthor
3) the rotation about each Y axis is a result of the XRods plane distance from the YRods plane, that's why I am trying to have them (the planes) as close as possible to each other. But that introduces another issue: the heater block sits just next to the rods, where there should be the housing of the bearings and the XCarriage itself whic, being plastic, is prone to deformation due to the heat... hence my bearings-inside-leftover-tubes idea above ....
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 07:16AM |
Registered: 10 years ago Posts: 1,035 |
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lkcl
- 1) 2 bearings per rod, with distance maximised, stops y-axis rotation
- 2) adjustment mechanism (slots in plate) allows taking up of machine-tolerance slack to stop both Z and Y upwards and sideways travel in each bearing.
- 3) adjustment mechanism *also* has the side-effect of stopping both z-axis rotation (not completely) and x-axis rotation because the rods are pushed against the inner side of the sets of bearings, preventing travel and thus the carriage cannot rotate either
- 4) even if there is some rotation, the fact that the hotend is close to the centre point means that any rotation is not amplified
- 5) lateral travel is well, if there is any, you just have to put up with that. or get really good rods and bearings.
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 08:48AM |
Registered: 10 years ago Posts: 1,035 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 12:38PM |
Registered: 11 years ago Posts: 1,401 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 01:14PM |
Registered: 10 years ago Posts: 1,035 |
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ggherbaz
You don't want to use that method to hold the bearings in place, you are better off making a new part in plastic or getting something that support the whole bearing in place.
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 01:45PM |
Registered: 10 years ago Posts: 1,873 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 02:12PM |
Registered: 10 years ago Posts: 1,035 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 02:34PM |
Registered: 11 years ago Posts: 1,401 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 29, 2016 02:40PM |
Registered: 10 years ago Posts: 1,035 |
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ggherbaz
A bolt isn't the best way to retain a bearing in a loose environment, too much pressure from the bolt and you will deform the bearing or at least tighten it against the rod creating drag issues, it is also one point retention which means that with little time the bearing will slide back and forth in the housing and you will loose printing quality. If the bolt presses against a printed part that press against the whole surface of the bearing, then most of the issues will be eliminated, but still I personally don't like to put any pressure what so ever to the bearings. I rather spend some money getting the right stuff that use inadequate leftover parts.
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 30, 2016 02:41PM |
Registered: 10 years ago Posts: 1,035 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 30, 2016 10:02PM |
Registered: 12 years ago Posts: 1,049 |
Re: Started designing an efficient Horizontal XCarriage. Looking for your experience and input May 31, 2016 02:44AM |
Registered: 10 years ago Posts: 1,035 |