3D printed mecanum wheels


Preassembled 3D printed 2” Mecanum Wheels - General Forum

PatrickW

#1

We designed some 2” Mecanum Wheels that print fully assembled without support material. These wheels copy a lot of geometry from the Thrifty Bot wheels. Thanks to Nick and Ryan for designing a great wheel and giving us the ok to post this design.

Left Wheel:
2910, 2in, Preassembled, 3DP, Mechanum Wheel, Left.STL (11.3 MB)
2910, 2in, Preassembled, 3DP, Mechanum Wheel, Left.STEP (2.1 MB)

Right Wheel:
2910, 2in, Preassembled, 3DP, Mechanum Wheel, Right.STL (11.3 MB)
2910, 2in, Preassembled, 3DP, Mechanum Wheel, Right.STEP (2.1 MB)

When printing these wheels be sure to turn support material off.

https://www.chiefdelphi.com/uploads/default/original/3X/f/2/f268f052b51fbaac4ef3da9502cbbd4e360744cd. mp4

edit: Testing video 1/22/2020

https://www.chiefdelphi.com/uploads/default/original/3X/0/7/0788d9e785afe9dc01b2bbf64472ef43f7d49c3d.mp4

63 Likes

Connor_McBride

#2

Do you need any hardware for these?

NickJT

#3

Thanks, we’ll give these a try

PatrickW

#4

Connor_McBride:

Do you need any hardware for these?

No hardware needed. Just pop them off the print bed and they are ready to use.

1 Like

Connor_McBride

#5

This is so cool thanks for sharing! I’ll make a couple of these tonight and try to post my own results as well.

1 Like

Humzah

#6

This is all one large print, right? or are the rollers seperate

PatrickW

#7

It is all one print. It prints fully assembled with the rollers already attached to the wheel. There is actually no way to disassemble the wheel because the rollers are fully captured. Inspiration taken from the Emmett gear.

PeterR

#8

Awesome design! What infill percent did you use?

PatrickW

#9

These are the settings we used. However i’m sure there are other settings that would work as well.

11 Likes

Rick_McThunder

#10

This is a great looking part! cant wait for our new makerbot replicator + to come in so we can print some of these! Thank you for sharing

2 Likes

Deltatiel

#11

Very cool! I’ll be sure to show my teacher this tomorrow!
Good luck this year y’all!

1 Like

juju_beans

#12

What’s the print time with those settings per wheel?

zec2

#13

How are the rollers able to free spin if it’s all being printed in one piece? Does this require a two material printer?

PatrickW

#14

juju_beans:

What’s the print time with those settings per wheel?

According to Eiger, 3 Days 2 Hours for 8 wheels

zec2:

How are the rollers able to free spin if it’s all being printed in one piece?

The rollers and main piece of the wheel are not touching each other. There is a small bit of clearance between them when printed.

zec2:

Does this require a two material printer?

No, it does not require a two material printer.

7 Likes

ap4750

#15

I am fairly unfamiliar with the 3D print process as a whole, but does it seem reasonable to try a print of these on a form labs form 2 (SLA)? I am not completely sure which material we would use.

GatorRobotics

#16

Has anyone printed these on an Afinia printer? If so, what settings did you use?

PatrickW

#17

Using the cross section preview you can see how these wheels would be printed in one print without support material.

https://www.chiefdelphi.com/uploads/default/original/3X/f/2/f268f052b51fbaac4ef3da9502cbbd4e360744cd.mp4

12 Likes

zec2

#18

That makes more sense now. Thanks for sharing this!

Guy

#19

This is great, thanks for sharing!
Would you mind posting a video of these in action?

BordomBeThyName

#20

The Thrifty VIW’s use cylindrical rollers because they’re machined parts, but it results in an uneven contact surface and a 2. 079" diameter on the edges. Since you’re doing a one-piece print, you aren’t limited by practical machining considerations and can adjust this to be a true 2" wheel, right?

6 Likes

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Mecanum wheels

Mecanum wheel - a roller bearing wheel that allows the robot to move in any direction, as well as combine linear and rotational movements. The design consists of a wheel, around the entire circumference of which rollers are installed so that their rotation angle relative to the wheel axis is 45°. Accordingly, during rotation, the resulting force is also directed at an angle. On a four-wheeled platform, by combining the rotations of individual wheels, it is possible to achieve not only movement to the right-left, forward-backward, but also diagonal movement, as well as simultaneous movement and rotation around its own axis.

Mecanum wheels do not require a special mounting scheme as omni wheels require and can be mounted on a typical 4 wheel mobile platform instead of conventional wheels. Another important feature of the mobile platform on Mecanum wheels is the ability to rotate in place with minimal friction and low torque.

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Set of 4 Mecanum wheels with a diameter of 60mm. Permissible load for each wheel - 3 kg, for the whole set - 10 kg. Includes grommets to connect to LEGO motors. The kit can be completed with suitable hubs and electric motors.

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Manufacturer: Nexus
Country of manufacture: China

12000 RUB

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Set of 4 Mecanum wheels, Ø 100 mm. Permissible load for each wheel - 15 kg, for the whole set - 45 kg. The kit can be completed with suitable hubs and electric motors.

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Manufacturer: Nexus
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Set of 4 Mecanum aluminum wheels, Ø 152 mm. Permissible load on each wheel - 15 kg. The kit can be completed with suitable hubs and electric motors.

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Manufacturer: Nexus
Country of manufacture: China

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Set of 4 Mecanum wheels with roller bearings, diameter 152 mm.


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