usage of denso window motor

[Creator Mat]

Originally Posted by dexo568

Where can we buy a sprocket that will work with the window motor coupler? OR, can someone explain other possible ways to connect the window motor with the drive chain?

Thanks, Team 3328

What we did to attach the coupler with the was pin it to the window motor using a cotter pin. It stayed pretty well and we never had any problems with it

[artdutra04]

If you have access to CNC machines (through your shop or via sponsors), you can machine your own sprockets. The Denso motors also do not like cantilevered loads, so you should always support the shaft with another bearing/bushing. Here's some 7075 aluminum sprockets with a Denso hub pattern that I machined last year for 228.




The Denso motor, sprocket, and shaft support (with Delrin bushing).

[Lowfategg]

We turned down the included KOP hub and machined the inside to press fit a bearing that would fit over the fixed metal idler shaft on the motor (I think it was 5/16"). I drilled and tapped the end of the shaft on the motor (your allowed to modify the output shafts on motors <R47>), and held it all together with a number #10 screw and washer. You can just bolt whatever you like to the modified KOP hub. Just be careful with side loads because the metal shaft on the motor is not well supported.

We used this on our ball pinching system last year with V-belts. It was a low torque application and it never failed.

[Gdeaver]

We took a 3/4" sprocket and epoxied it onto the motor. Had to ream out the sprocket hub a little. If your varying the speed of the window motor you should use a victor speed controller not a jag. If you experience random lock up remove the locking pins.

[ttldomination]

Turns out that the output shaft of the couplers that come with the kit are not 8 mm like the Andy Mark hubs, but instead, they are about 16 mm, or about .63". Would it be wise to take a .625" AM hub and sand out the inside a bit to make it fit on the shaft?

[yara92]

Can you plese send me the cad for this photo

[clayman]

The CAD for those custom sprockets would also help our team a lot (we currently have no CAD skill).

[artdutra04]

Attached is a STEP file of the sprocket I machined in the photos above. All I did was download a regular sprocket model from McMaster-Carr (they have CAD models for most of their hardware (screws, nuts, shoulder bolts, sprockets, etc) on their website), use calipers to measure the metric output "spline" of the Denso motor, draw it on the part, and extrude cut it.

To machine it was a four step process. The first thing I had to do was machine a fixture plate out of 6061 aluminum. Then I machined about 90% of the sprocket features onto the 1/2" 7075 aluminum raw material. Then I took that part out, bolted it to the fixture plate upside down, and machined the sprocket teeth into it. The last step is to use a lathe or hand file to bevel the teeth.

There is nothing in this CAD model to keep the sprocket on the shaft of the motor or to support it for cantilevered loads. In the second photo I previously posted, our solution was to machine a custom bushing out of Delrin to both support the shaft and to keep the sprocket laterally in place on the shaft.

[yara92]

My team 1946 thank you for your help

[Steve Compton]

opps - there it is, thanks!

Originally Posted by artdutra04

Attached is a STEP file of the sprocket I machined in the photos above. All I did was download a regular sprocket model from McMaster-Carr (they have CAD models for most of their hardware (screws, nuts, shoulder bolts, sprockets, etc) on their website), use calipers to measure the metric output "spline" of the Denso motor, draw it on the part, and extrude cut it.

To machine it was a four step process. The first thing I had to do was machine a fixture plate out of 6061 aluminum. Then I machined about 90% of the sprocket features onto the 1/2" 7075 aluminum raw material. Then I took that part out, bolted it to the fixture plate upside down, and machined the sprocket teeth into it. The last step is to use a lathe or hand file to bevel the teeth.

There is nothing in this CAD model to keep the sprocket on the shaft of the motor or to support it for cantilevered loads. In the second photo I previously posted, our solution was to machine a custom bushing out of Delrin to both support the shaft and to keep the sprocket laterally in place on the shaft.

[Steve Compton]

Hey Arthur, Nice work! Do you have any kind of CAD file you could share?

Originally Posted by artdutra04

If you have access to CNC machines (through your shop or via sponsors), you can machine your own sprockets. The Denso motors also do not like cantilevered loads, so you should always support the shaft with another bearing/bushing. Here's some 7075 aluminum sprockets with a Denso hub pattern that I machined last year for 228.




The Denso motor, sprocket, and shaft support (with Delrin bushing).

[yara92]

Is These chain #25 Or #35 series
the next quation do you have base technical diagram

[clayman]

It's for #35 chain, and the diagram is already attached on my previous post.

[yara92]

Yes, I meant the sheet metal

[CordovaRover]

Originally Posted by Steve Compton

Hey Arthur, Nice work! Do you have any kind of CAD file you could share?

We used this motor this weekend at the peachtree regional and had no success with it. Needless to say we didn't use a sprock. One of our sponors is willing to machine the sprocket for this part if we had it in a CAD file. Can you share the file you have with use so that we may have this part made for our next regional in Knoxville?