Help with Gear constraints.

[Anonymous]

Hi every one!

I am working in a project and I am having trouble achieving the desired movement.

This is for mixing in big reactors. The selected part in the photo is driven by a motor. The small gears turn around the big gear (stationary) making the blades to rotate. When I drive de constraint to rotate de frame (selected part in the photo) the small gears don't turn around the big gear.

I attached the project files. enfriador.iam is the assembly file.

thank you in advance.

Bye!

[graemev]

Soluble using angular constraints:

1. Given that the small gears are of the same size, set one mixer shaft assembly to have a constant angular constraint in relation to the other.

2. Make an angular constraint between the large gear and the frame. This constraint will be used to drive the motion.

3. Make an angular constraint between one of the mixer shaft assemblies and the frame. Set its value as a multiple of the constraint from step 2, the value of the multiplier being the gear ratio.

4. Drive the constraint from step 2 to confirm correct rotation. If the rotation is incorrect, make the multiplier negative.

You may wish to use three-feature angular constraints to ensure no unexpected results.

[WHolzwarth]

Two new files (2016) are attached.

Place engranaje_central_1.ipt in folder Enfriador.

Walter