Mecanum wheels
Hello
I am a last year student in elektromechanics and for my thesis i have to draw a robot in solidworks and simulate the movement using Labview
The robot has 4 special wheels on it called Mecanum Wheels. These wheels let you drive in any direction you want (sideways, left, right) .
Check youtube if you want to see them in action.
We currently use these mecanum wheels on the actual robot http://www.fingertechrobotics.com/proddetail.php?prod=ft-mecanum-set-cg
The problem I face is establishing the sideways driving. If you want to drive sideways, for example left: you have to turn the 2 wheels on the left side towards each other and the 2 wheels ons the right side away from each other.
When is start the motion study with this setup the robot doesnt move in the desired direction instead it just goes back and forth slightly going to the opposite direction (right)
In this link i included the robot design with the motion studies. check motion study 3 for the setup i explained
http://dl.dropbox.com/u/53407846/Solidworks%20rover%205%20parts%20forum.rar
2 answers
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J E Paz about 1 year agoAre you working with motion study or basic motion?? I will check it out!! I believe its just a matter of contacts and friction setup
Attachments
Solidworks_rover_5_parts.zip, 21.2 MB
Download-
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J E Paz about 1 year ago
I know the problem For the meccannum wheels to work you need each one of those rollers to be free otherwise it will behave as a normal wheel!!
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Andy about 1 year ago
could you make a video of the movement? im gonna try to make it work with your method
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J E Paz about 1 year ago
I made the whole body an assembly, and i made an assembly for the roller, and copied it for each spot en every wheel also made a split surface on the roller in order to draw a white line that can help you know when its moving then for the motion study go little by litle
first work only with gravity, then only contacts, then one motor at a time... use wstiff rendering method and work with 100 fps
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Andy about 1 year ago
Hello thanks for taking a look :) im working with motion study.
and i do believe the rollers were able to rotate free, if you lock the wheel you should be able to turn them around.
Could it be there is something wrong with the design? i used a parabola to make the rollers so its a perfect cirkel if you look from the sidei have set the contacts between the rollers and the floor and used the highest friction but still doesnt work :(
