dimensioning brushless motor

[tuonoblu]

Hello everyone

I look for someone who knows yaskawa software for sizing "sigma size" engines or "danaher motion".
I would like to clarify some doubts.

Thank you.

 

[tuonoblu]

I try to explain myself I should size a motor on a screw application with ball recirculation that must move a cart of 200kg at a speed of 1m/sec.

by filling in the data to be entered in the sigma size software there is the word thrust, but I just have to move the cart and if I don't insert any value in the push box it gives me as a result 0 nm.

How can I calculate the necessary thrust for this application?

 

[MBT]

mandi furlan...
I haven't used that software for almost five years. . .
However, the speech is simple
if to move the cart is necessary 0n of push, the couple you need to move it is (theoretically) of 0 nm....
if I do not remember badly, he can make a calculation regarding accelerations, but not at constant speed
you come in, as only you know that friction you can consider for that application
now, so to spans, if you have a cart of 200kg and you run it with ball recirculation screw, probably also that we pile ball recirculation sleeves to guide it
in this case the force to regime will be equal to 200 kg * f (where f is the coefficient of friction that for a recirculation of balls could be of the order of 0.05)
so I would say gross 10kg (or 98.1n if you prefer)
but if you use other guides... The thing changes

 

[cacciatorino]

I try to explain myself I should size a motor on a screw application with ball recirculation that must move a cart of 200kg at a speed of 1m/sec.

by filling in the data to be entered in the sigma size software there is the word thrust, but I just have to move the cart and if I don't insert any value in the push box it gives me as a result 0 nm.

How can I calculate the necessary thrust for this application?

you must take into account the acceleration, that is to say the linear inertia of the cart and the inertia to the rotation of the motor rotor and possible pulleys of transmission.

 

[MBT]

as rightly points out hunting, you have to consider accelerations
If I don't remember, the sw does...
but if it is not so, you must consider beyond the mass, even the time when you acceleri and deceleri.
if there is a transmission, the motor shaft
Careful. . .
You will find that you need more power to accelerate it than to keep it in speed and you will also see that small variations of acceleration time lead to great variations of the necessary powers!

 

[tuonoblu]

Thank you for the availability and celerity in the answer, I attach a pdf with the software screens .

if you can take a look at him why masses and accelerates are inserted while the doubt remains on the thrust thrust thrust.

Thank you.

 

[MBT]

if you can take a look at him why masses and accelerates are inserted while the doubt remains on the thrust thrust thrust.

Yeah.
as I remembered
I told you...

if I do not remember badly, he can make a calculation regarding accelerations, but not at constant speed
you come in, as only you know that friction you can consider for that application

 

[tuonoblu]

thanks mtb therefore if I did not understand the push the colcle by multiplying the mass for the friction coeff. and insert the resulting value in n in the thrust box; and can I also use it for other applications like chain belt movements etc.?


thanks always for availability

 

[MBT]

if I don't remember badly, it allowed you to bring back forces into play through belt transmissions etc...

but you to memoirs and sites!

 

[Er Presidente]

...you will also see that small variations of acceleration time lead to great variations of the necessary powers!

a simple statement that hides a great truth!
Will we be able to put it in the brain of those who design, drive, homologate vehicles?
When it comes to reducing consumption and emissions, this simple truth should be remembered.

are they right? Csnf!
:smile:

 

[tuonoblu]

Where are you?

 

[cacciatorino]

a simple statement that hides a great truth!

I remember very well the importance of lightening the wheels... :wink:

 

[MBT]

Where are you?

dongje san daneel... :wink: