I don’t know that much about robots and i’m 12 years old. I really want to pick up an interest in 'em so to start off i need some help. I ran out of collars and i don’t know if they’d help for my situation or else i would buy a collar pack. How do i get a drive shaft secure in a motor? I created a rotational wrist by myself for my arm for a grabber bot, and the shaft always pops out when i rotate the wrist. Any ideas for how to keep the shaft secure in the motor hole?
MarkO’s advice about reducing the number of collars you use is important (They cost money and their weight adds up).
To keep a shaft from popping out of a motor’s clutch, most folks put a collar at a spot on the shaft where if the shaft “tries” to fall out, the collar will bump into something that prevents the combined collar/shaft from moving in the direct of falling-out.
If your design currently doesn’t have anything for the collar to encounter, you might need to tweak the design to add something for that purpose.
Thanks i understand what you mean. I think i should put a small metal, soldered square that i can cut up with a metal saw. i can then attatch that on the plate where the shaft can go through. Then the collar will be between the motor and the metal wall so the shaft will stay put for competition.
This is probably overkill for your project, but attached is an example we used last year. There’s a motor driving the shaft on the bottom hole (#7 of the 7-hole strip). There are collars to the inside of the vertical support beam on the axles through holes #4 and #1 (top & center) that keep the whole assembly (and the bottom axle) from pushing outward. Long bars are somewhat bendable, so it wasn’t completely tight, but good enough for our purposes.