Quote:
Originally Posted by Addison4300
So our team is making a lift with a cable attached to a tough box mini to act as a winch system to raise the lift. I see many other teams have this design as well. How exactly are your teams attaching the cables to the motors? every way we try it isn't strong enough to lift anything or it is too hard to attach.
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Every crane I've ever seen includes operating instructions to leave multiple turns of wire rope on the hoist drums...usually more than 3, sometimes as high as 9. This allows almost all of the force transfer to occur via friction and your mechanical connection doesn't see hardly any load.
We usually drill through the side of a drum and drill/tap a bolt and put an eye in the cable with a swege that goes around the bolt.
Another tip for spooling cable from the crane world is what we call "lagging". Basically, have your lathe team grind a radiused cutter that matches your cable and then turn the surface of your drum with a shallow spiral groove that matches how the cable would spool on it neatly. This helps it do so.
Good luck!