ball/flying valve gear motor

[PIETRO2002]

But why do you want to use the sintered pieces? Do you have such high volumes to cushion the cost for mold construction?

 

[stevie]

But why do you want to use the sintered pieces? Do you have such high volumes to cushion the cost for mold construction?

so it would seem.. .
Moreover the sintered is even more complicated to use, because obviously the mechanical performance of the toothed wheel depends on the material and the sintered is far from the material "full"

 

[meccanicamg]

But why do you want to use the sintered pieces? Do you have such high volumes to cushion the cost for mold construction?

I think you want to land with this product and it seems already in an advanced stage... But there are technical problems as well as problems of manufacturing times.
Surely that if playing with the products could get a real optimized product.... certainly the official launch would have a delay of 3 months according to me to eye and cross.

 

[Enrico Povolo]

You said well, my reality... I thank you and I admire you for the interest you are showing me.

volumes could be great with the right product. even if I realized "only" 1000, for some details, see the crown or the planets, would already be 10'000 units from 0.2-1 euro per piece. every mold comes to me on average 2000€.

 

[PIETRO2002]

Surely now we have put him in crisis with our observations, but we are told it is better to become red before you pale after! face is lost not so much in looking for solutions, but doing wrong things and throwing money in the trash. .

 

[meccanicamg]

You said well, my reality... I thank you and I admire you for the interest you are showing me.

volumes could be great with the right product. even if I realized "only" 1000, for some details, see the crown or the planets, would already be 10'000 units from 0.2-1 euro per piece. every mold comes to me on average 2000€.

you have to decide, but it is not worth stopping, try traditional gears, do open/close tests, make changes and within a few months to start with the large scale series?
the risk of business is also able to plan and evaluate.

 

[Enrico Povolo]

That's why I'm here.

before proceeding with the molds I make samples certainly, but I have to get them out of the full. or to get closer with the new sintering techniques via 3d printing.
even if I assume they will not be comparable.

 

[PIETRO2002]

you have to decide, but it is not worth stopping, try traditional gears, do open/close tests, make changes and within a few months to start with the large scale series?
the risk of business is also able to plan and evaluate.

I have white hair, you mechanicalmg, you are certainly younger than me! but we are on the same wavelength! good connoisseur few words. . .

 

[meccanicamg]

Surely now we have put him in crisis with our observations, but we are told it is better to become red before you pale after! face is lost not so much in looking for solutions, but doing wrong things and throwing money in the trash. .

pietro, in fact at first enrico had written me in private but then he convinced himself to share his project.
If he hadn't, he would have stayed with his doubts.
I agree that it is better to delay the release of a product rather than to chase it after with exchanges and therefore wrong pieces, dismaying customers and however money thrown.
Unfortunately many have the cravings to arrive, full of customer blackmail, full of courier... but it goes that if the mistake then runs double.
Unfortunately, I've had to do shit too, and then you have to do everything to fix it and don't lose your face... and I assure you that it's not a walk... not an employee.... nor a owner.

 

[PIETRO2002]

That's why I'm here.

before proceeding with the molds I make samples certainly, but I have to get them out of the full. or to get closer with the new sintering techniques via 3d printing.
even if I assume they will not be comparable.

I would buy gear from business. . .

 

[meccanicamg]

That's why I'm here.

before proceeding with the molds I make samples certainly, but I have to get them out of the full. or to get closer with the new sintering techniques via 3d printing.
even if I assume they will not be comparable.

try to think traditional.
the company khk gear manufactures standard gears to tons and also makes them customized.
the thing I can recommend is to remake the project so that it can work with gears in tempered c45 or steel from cementation.
Write to the khk and explain briefly that you are making a prototype and then think about making a lot of x units. ask for a quote and agree a cost, so you make the quote.
order the first series to have 2-3 complete gearboxes and you mount them from you. put them on a bench and make cycles alone/close up to 100000 times. if they hold you can decide to lose the project.
if in the end you spend 50€ and see it at 70€ you have already earned us what is in line with current sales management.

 

[Enrico Povolo]

Maybe the problem here is just the power out there that I set myself up.

before reviewing the project we used a small parallel axle motor of the "nuovakiwi" from 8nm and opened 1"1/2 ball without particular problems.
then with another simple 8-56 stadium we also opened 5" butterfly.
with the going of time, then a few little problems came up.

Am I making too many mental pippes about the forces to reach?

 

[meccanicamg]

Maybe the problem here is just the power out there that I set myself up.

before reviewing the project we used a small parallel axle motor of the "nuovakiwi" from 8nm and opened 1"1/2 ball without particular problems.
then with another simple 8-56 stadium we also opened 5" butterfly.
with the going of time, then a few little problems came up.

Am I making too many mental pippes about the forces to reach?

What I can tell you, not being in your industry, is that you have to be sure whether there is a unified standard pair that you have to achieve for every type of valve.
Surely looking at the catalog of competitors can help you but you have to be sure of the goal you have to achieve.
I don't know.

 

[Enrico Povolo]

What does it mean to enlarge by 10mm the circumference of the crown? Would it change something or would it remain more or less unchanged the result?
Would you reduce the band width a little?

accepting also to descend respective to 40nm and 160nm...

 

[PIETRO2002]

What does it mean to enlarge by 10mm the circumference of the crown? Would it change something or would it remain more or less unchanged the result?
Would you reduce the band width a little?

widening the band in theory increases the strength of the tooth because it is distributed on a larger area, but this means having particular worked very well both as toothing and as alignments of the trees, otherwise contacts between the teeth are distributed only locally, thus eliminating the benefits of having increased the width of the band.

 

[PIETRO2002]

What does it mean to enlarge by 10mm the circumference of the crown? Would it change something or would it remain more or less unchanged the result?
Would you reduce the band width a little?

accepting also to descend respective to 40nm and 160nm...

to increase resistance:
increase the module
increase the width of the tooth
use of high quality steels
do the appropriate surface heat treatments to increase hardness
rectifies gears so you have a "perfect" contact
optimally mobrifique with the right products
......

 

[stevie]

to increase resistance:
increase the module
increase the width of the tooth
use of high quality steels
do the appropriate surface heat treatments to increase hardness
rectifies gears so you have a "perfect" contact
optimally mobrifique with the right products
......

but here we talk about "sintered"....but what material?
I would, of course, for a product like this to exclude grinding operations, but also the disembarkation seems too
for lubrication, if I understood the product, you must rely on the load of initial fat and good night, no one will ever go for fields to fatten this business

 

[meccanicamg]

What does it mean to enlarge by 10mm the circumference of the crown? Would it change something or would it remain more or less unchanged the result?
Would you reduce the band width a little?

accepting also to descend respective to 40nm and 160nm...

I think we're not going far.

 

[meccanicamg]

but here we talk about "sintered"....but what material?
I would, of course, for a product like this to exclude grinding operations, but also the disembarkation seems too
for lubrication, if I understood the product, you must rely on the load of initial fat and good night, no one will ever go for fields to fatten this business

the type of sintered material is indicated in post number one and two. in the post two there are mechanical characteristics.
certainly no grinding nor landing. Moreover the sintered even if after fusion decreases the grain will never be smooth and homogeneous, then it will offer possible nerves to break if you do not choose material, process etc correctly.

 

[PIETRO2002]

but here we talk about "sintered"....but what material?
I would, of course, for a product like this to exclude grinding operations, but also the disembarkation seems too
for lubrication, if I understood the product, you must rely on the load of initial fat and good night, no one will ever go for fields to fatten this business

In fact, in my answer I was on the theory.
being a sintered variables are many:
composition of powders
powder granulometry
molding pressure
final thermal treatments
possible impregnation with lubricants

There are many variables to keep under control as you see, which can give origins to very different performance.
in these cases you have to do a lot of tests on prototip,i to have a statistically significant number, so that you put on the market a reliable product!