Posted by Brian at 1/20/2001 2:50 PM EST
Student on team #670, HHSRC, from Homestead High School.
How do you attach the gears and sprockets to a shaft. We are unable to figure this out since this is our first year. If someone could help it would be appriciated.
Posted by nick237 at 1/20/2001 5:24 PM EST
Engineer on team #237, sie h2o bots, from Watertown high school ct and sieman co.
In Reply to: Attaching the Gears and sprockets to the shaft
Posted by Brian on 1/20/2001 2:50 PM EST:
Brian. The easiest way that is normaly the strongest is to keyway the shaft and atachment, A keyway alows you to remove an object off the shaft.
Welding is another way but you can distort or damage the sprocket and or shaft, also it becomes harder to remove.
A third way is with collets.
A forth way is to pin the hub to the shaft by drilling a hole through both and inserting a hardened steel pin or screw.
There are many ways more but the four above are the excepted ways proven to last.
I hope this helps.
nick237
: How do you attach the gears and sprockets to a shaft. We are unable to figure this out since this is our first year. If someone could help it would be appriciated.
Posted by Mike McIntyre at 1/21/2001 1:20 AM EST
Coach on team #1, Juggernaut, from Oakland Technical Center Northeast and 3 Dimensional Services.
In Reply to: Attaching the Gears and sprockets to the shaft
Posted by Brian on 1/20/2001 2:50 PM EST:
A simple way (but not cheap) is to use a donut-shaped part called a “transtorque” (sp?)found in the Small Parts Inc. catalog; they come in a variety of sizes and work by a wedging action. You slide the trantorque into the hub/hole of the sprocket or wheel, then slide the shaft into the hole of the trantorque. There is a collar on the trantorque that is then tightened down and this smashes the trantorque into both the hub and the shaft. The frictional force has limits and won’t hold in real high torque situations (ie. drive system), but works in most. You get twice the grip if you gang up a couple of the trantorques. There used to be a detailed explanation in one of the CDI sections somewhere on this site. Good luck!
: How do you attach the gears and sprockets to a shaft. We are unable to figure this out since this is our first year. If someone could help it would be appriciated.