Timing belt elevators

[achen15]

Originally Posted by seg9585

Yes, we did (for chain)! Here's a video of our engineering model:
https://www.youtube.com/watch?v=idJFSad9gCA

(maybe this is a general question but)

How do you attach the carriage to a chain loop?

[asid61]

Originally Posted by achen15

(maybe this is a general question but)

How do you attach the carriage to a chain loop?

A lot people have used screws, I know.

[Scott Morgan]

Originally Posted by Mike Marandola

Has anyone successfully 3D printed a timing belt clamp? I was thinking about trying that out.

We printed a couple this weekend. We haven't properly tested them yet, but they seem like they'll work.

[George C]

I made a couple of timing belt clamps in 2011 for Logomotion when we used a length Gates belt to drive the upper stage of a compound elevator. 10-15 minutes work with a hacksaw and files. It worked perfectly. Use a square to transfer the spacing from a belt to a piece of flat aluminum. Cut slots to depth with a hack saw. Clean up with a small 3 square file and/or needle files. An advantage over the purchase version referred to above was that the clamp plate had bolt holes to the sides so they didn't interfere with or damage the belt.

[seg9585]

Originally Posted by achen15

(maybe this is a general question but)

How do you attach the carriage to a chain loop?

We are using M3 screws through holes in the #25 chain links. The other option I considered was using chain half-links, but figured maintenance would be easier and the build would generally be more reliable with closed loop chain

[Chris_Ely]

Originally Posted by achen15

(maybe this is a general question but)

How do you attach the carriage to a chain loop?

These are useful.
ANSI Roller Chain Attachment Links

EDIT: 250th Post!

[Jaywalker1711]

What timing belts are you guys using, and where are you ordering them from?

We are having difficulty finding stock 12' timing belts

[gpetilli]

Originally Posted by Jaywalker1711

What timing belts are you guys using, and where are you ordering them from?

We are having difficulty finding stock 12' timing belts

The longest I know of is 250T which is 250 teeth at 5mm per is 1250mm or 49" (just over 4ft). If you cut the belt and use the single sided mounting you could go nearly 4', but not 12' (or 6'). If you really need that travel, it may be simplest to switch to chain.

[Pendulum^-1]

Originally Posted by Jaywalker1711

What timing belts are you guys using, and where are you ordering them from?

We are having difficulty finding stock 12' timing belts

We got 30' of 25 mm wide belt from polybelt.com. We will cut to length. A bit pricey, sure.

[AdamHeard]

For round tooth profiles plates can get slotted with a ball end mill very easily to make clamps.

[Joey Milia]

You can also buy HTD belt or GT2 belt by the meter from SDP-SI

[Drew4564]

Originally Posted by Jaywalker1711

What timing belts are you guys using, and where are you ordering them from?

We are having difficulty finding stock 12' timing belts

My team ordered some 3800 millimeter (about 12.45 feet) long, 15 mm wide belts from Motion Industries.

You can check them out here if you're interested.

[Mike Marandola]

Here is a test of our 3d printed belt clamp. It was printed on a Cube printer with PLA.



The plan is to have the printed piece epoxied to the aluminum plate on the bottom and the top plate will do the clamping.