Ratchet Gears do not rotate in their intended service purpose. These gears (and the associated pawls) are often on one or both sides of winch drums used for lifting with a coiled metal cable or rope. Their fluid analogy is a check valve, their electrical analogy is a diode. But it is true - gears that are normally used to transmit torque are under load while they are rotating. Excellent and clear presentation - SUB
So let’s say I have a motor that is 2000 watts and I calculated that the maximum power that can be transmitted in my gear is 2500 Watts. Can I say that the safety factor is 2500/2000 = 1.25? Such a great video by the way! Thank you
When using the material's yield strength to calculate the bending stress, do you use the surface yield strength or steel core yield strength value in the case of case hardened gear?
Angled teeth contact is more gradual, so helical are more silent. And they also last longer because of this. Either that, or they can handle higher loads. Of course, they generate thrust, which require thrust bearings. Also, as you can imagine, the manufacturing of helical gears is more expensive than regular spur gears.
Ratchet Gears do not rotate in their intended service purpose. These gears (and the associated pawls) are often on one or both sides of winch drums used for lifting with a coiled metal cable or rope. Their fluid analogy is a check valve, their electrical analogy is a diode.
But it is true - gears that are normally used to transmit torque are under load while they are rotating. Excellent and clear presentation - SUB
You, without doubt, deserve a like
I can't resist but subscribe....... very lucid explanation!!!
Thank you!
So let’s say I have a motor that is 2000 watts and I calculated that the maximum power that can be transmitted in my gear is 2500 Watts. Can I say that the safety factor is 2500/2000 = 1.25?
Such a great video by the way! Thank you
would be cool to have a video with all the K coefficients
Those will be coming in about 2 months.
What type of software do you use to make these drawings?
just what i need before exam
Usually Steels have similar tensile and compressive strength (or higher tensile strength) why do you assume they have lower tensile strength?
Do you need to consider stress concentration factors Kt at the fillet of the root of the tooth?
When using the material's yield strength to calculate the bending stress, do you use the surface yield strength or steel core yield strength value in the case of case hardened gear?
why would I choose a spur gear instead of a helical one?
Is it just about noise?
Angled teeth contact is more gradual, so helical are more silent. And they also last longer because of this. Either that, or they can handle higher loads. Of course, they generate thrust, which require thrust bearings. Also, as you can imagine, the manufacturing of helical gears is more expensive than regular spur gears.