material for toothed wheels

[fusa]

Good morning to all,
I'm a new engineer and I've just started working in the company.
I was asked to verify the possibility of changing the material of some toothed wheels, passing from steel to a quieter material. They asked me to deepen the tecapet white, the nylon pa.6 and the bachelized canvas. on the internet I have not found much for the sizing and verification of dense wheels in plastic material so I ask if someone has already had experience.
as I found between the two plastics does not change much, instead for the third, the canvas, I do not find enough data and I do not find what the benefits of this solution can be.
above all I would like to know for the verification that value I have to use? tensile strength? Elastic module? because the person in favor of the bachelized canvas argues that the value to consider is the parallel/perpendicular compression resistance to the layers, which I have never heard of in the verification of the dentate wheels.
I also read that we have to take into account moisture, since I do not find it for the bachelized canvas.
the toothed wheel is mounted on a machine that works continuously and with commuting motion, continues to change direction of rotation (I don't know how to say it technically) and is subject to a force on the tooth of about 280 n, with radius of 150 mm.
Thank you very much in advance and hope to have been clear.

 

[biz]

Save. quiIt can help you. there are references to various rules.

 

[fusa]

ok thank you, but the thing that most interested me is how to make technical understanding that the bachelized canvas is no longer used. because analyzing the simple charted values you can not see a big difference but there will be a reason if it was used until the 50s and then that's enough.

 

[biz]

I don't know, it's not my field. design of plastic gears is a very specific field.

 

[meccanicamg]

had we used module 10 gears in bachelized canvas. the bachelite does not have uniform mechanical characteristics. has the advantage of being self-lubricating at low speed. is an ignorant material to use a little at home and unfortunately there are no great data available. they would be asked to the bachelite manufacturers.

we have replaced in these years with nylon for light and lamigamid applications and similar for severe applications.

Go. qui and you will find the calculation formulas and some explanations.

 

[meccanicamg]

@fusa Do you have any news? Any additions? have you experienced and have to share some data?

to use the calculation sheets of khk gear could be enough those indicated below:

 

[Steppermotor]

sin, it could be an interesting topic to deepen.

 

[TETRASTORE]

because the person in favor of the bachelized canvas claims that the value to be considered is the parallel/perpendicular compression resistance to the layers,

the parallel and perpendicular compressive strength is given, according to uni en iso 604, shown in the tables of the product (but with wood leaf); see this catalogue of a supplier on page 20 (characteristic bachelized canvas on page 22).