Help needed with angle gear

[morson1]

Hello

I need some help figuring out a solution for the MOC I´m working on.

Let´s start with a picture:

Basically, I need the 87408 beam to be able to rotate almost 360 degrees around its holding axles.

At the same time I need rotation to the axle in the middle of it, independent of the beams position.

Don´t see the picture as absolute, just made it quickly to explain in both words and picture.

The motor won´t be placed as drawn, just put it there to show in which direction it will be placed.

I need the to Z20 gears to be powered (by the motor) in opposite direction to each other, that´s why

I marked one of the axles red.

I don´t like the solution on the picture really, it´ll be to wide when transmission to the Z20 gears is added.

If anyone have another solution for angled powertransfer meeting my demands I would greatly appreciate it!

Maybe it is doable with a total different set of gears etc. Don´t focus on the parts I´ve used, only remember

the function I need.

[mostlytechnic]

Can you just power one axle and let the gears transfer to the other side? For example, put a gear on the red axle, outside the beam. Get power to that gear. The gears you already show should them make the black axle coming out to the left rotate as well.

[morson1]

Can you just power one axle and let the gears transfer to the other side? For example, put a gear on the red axle, outside the beam. Get power to that gear. The gears you already show should them make the black axle coming out to the left rotate as well.

I´ve found that if I don´t power both Z20, the U-beam wants to rotate as soon as the axle pointing downwards encounter resistance, which it will.

The U-beam must not rotate if the mentioned axle is under heavy load.

Also, another problem.. I need some kind of free-wheel between the Z20 gears and the motor. The reason is that the U-beam needs to be able to rotate

without any rotation of the axle pointing downwards.

[freakwave]

Do you want the rotation of the 87408 beam to be controlled somehow, i.e. move it to a certain angle and stop there?

Do you mind telling us what "it" should do, I mean what is the function in real life/rel machinery that you want to achieve?

[morson1]

Do you want the rotation of the 87408 beam to be controlled somehow, i.e. move it to a certain angle and stop there?

Do you mind telling us what "it" should do, I mean what is the function in real life/rel machinery that you want to achieve?

No the 87408 should be able to swing freely as it wants.

It´s for a forest machine, the claw should hang in the axle pointing downwards. See link:

My link

My black arm is the red arm in the picture.

Edited February 15, 2011 by morson1

[freakwave]

No the 87408 should be able to swing freely as it wants.

It´s for a forest machine, the claw should hang in the axle pointing downwards. See link:

My link

My black arm is the red arm in the picture.

Hm, having this one hanging freely will move the claw once it grabs tight.

Driving both axles will not let it swing free.

Having not Idea at the moment except pneumatics doing the best job for this.

There are a few samples of LEGO machinery as B-models that use claws, but they all, at least thosespo I know of, sport a worm gear driven at the claw itself (manually)

[morson1]

Hm, having this one hanging freely will move the claw once it grabs tight.

Driving both axles will not let it swing free.

Having not Idea at the moment except pneumatics doing the best job for this.

There are a few samples of LEGO machinery as B-models that use claws, but they all, at least thosespo I know of, sport a worm gear driven at the claw itself (manually)

Just to clarify, the axle isn´t supposed to open/close the claw (that is still unsolved), it will only be used to rotate the claw.

It will swing free if I have some sort of free-wheel. Well it will not swing free if I engage the motor, but else it will.

I already have a MOC forest machine, and there I´ve solved the rotation with the micromotor, and the claw open/close with pneumatics.

However, this one will be much bigger, and remote controlled. Having a universal joint hanging in the micromotor will not be good enough

on this model, and as I want it remote controlled I don´t want any pneumatics on the model.

EDIT: Here´s a pic of my older MOC:s claw.

Edited February 15, 2011 by morson1

[allanp]

Does this help?

Edit: Ooooops i've made a mistake, thinking about it this design will not allow the end to rotate about the axis. I knew it was too obvious Unfortunately I think UJs are gonna be your best option. Why do you say UJs won't be good enough?

Edited February 16, 2011 by allanp

[morson1]

I´ve been building numerous solutions the past days, but nothing turns out good.

This is the last one, feel free to laugh..:

It is WAY to big on the height. Guess I´ll have to give the LA:s up, they are just to space-consuming!

[efferman]

is something like this usefull for you ?

[Alasdair Ryan]

is something like this usefull for you ?

THE CLAW

allanp will the design you sent me a while back not fit hear? you will need another mini moter for his idea

Edited February 23, 2011 by Alasdair Ryan

[allanp]

THE CLAW

allanp will the design you sent me a while back not fit hear? you will need another mini moter for his idea

Ah you mean this?

If the micro motor isn't powerful enough or too slow for the claw then it shouldn't be too difficult to replace it with an M-motor providing it's not too tall.

Edited February 23, 2011 by allanp

[Alasdair Ryan]

thats basicly what you want