Robo Challenge - Predator

[james...venom]

Re: Robo Challenge - Predator

Both gears modified, one ready to weld onto the thread and the second gear has been machined out to fit onto the servo horn.

[james...venom]

Re: Robo Challenge - Predator

Well all is complete! the head tilt mech is finished and in the machine. Its extremely tightly packed. Need to find a new home for the scorpion esc now. Head is almost full retracted here.

[james...venom]

Re: Robo Challenge - Predator

And here is the head fully forward, you can see most of the head tilting mech here.

Next job is the arms mech and creating the single tooth for the head. Then its armour up time and away we go!

[psycho_fling]

Re: Robo Challenge - Predator

the picture mentioned doesnt seem to be there??

all looking great nice work

[james...venom]

Re: Robo Challenge - Predator

Here we go, thank you very much.

[psycho_fling]

Re: Robo Challenge - Predator

very cool

[webby]

Re: Robo Challenge - Predator

looks brilliant, is the tilt mechanism like an actuator?

[PJ-27]

Re: Robo Challenge - Predator

Oh I see what you're doing! You've a gear on the servo head, which engages a gear on the threaded rod. The thread on the rod then pulls and pushes a nut which is attached to the head?

Does the servo have enough travel?

[james...venom]

Re: Robo Challenge - Predator

Yes your right PJ, I've modified the servo so it continuously rotates. It has 14kg or torque and rotates once in 1.08 seconds so it's slow but that means we can keep it very controlled.

[PJ-27]

Re: Robo Challenge - Predator

Neat idea! How are you limiting travel? The idea of using switches seems too flimsy in a combat robot.

[james...venom]

Re: Robo Challenge - Predator

cheers PJ

We will be using our eyes and control finger instead of limit switches

there will be physical stops on either end too.

[james...venom]

Re: Robo Challenge - Predator

Been working on the arm mechanism this last week. All the bit have arrived including my nice little ball screw

I really wanted to work the arms off a drill motor as they are nice and easy to replace and can be put under good strain with out burning out when used at the normal voltage. Only snag was its too big to fit in the robot so I set about making the gearbox smaller.

[james...venom]

Re: Robo Challenge - Predator

Machined out gearbox is as short as I could make it. finger crossed it fits!

[james...venom]

Re: Robo Challenge - Predator

Machining out the drive gear for the motor side

[james...venom]

Re: Robo Challenge - Predator

Hey presto! finished motor mount/gearbox with modified shaft and arms drive gear.