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wind wheel/endless screw

  • Thread starter Thread starter Wildfire
  • Start date Start date

Wildfire

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Hello illustrious masters,
I have to make as a topic a worm coupled with a cylindrical toothed wheel with helical teeth. I don't know exactly where to start (I'm starting with modeling 3d) I need your advice!
 
Do you need to create a set using pieces of commerce, perhaps downloadable from some sites, or do you need to be designed in detail to make them compulsive??

Because it changes!
 
DANI-3D said:
Do you need to create a set using pieces of commerce, perhaps downloadable from some sites, or do you need to be designed in detail to make them compulsive??

Because it changes!
Click to expand...
Unfortunately they are not pieces of commerce, but to be made to design.
in case they were standard anyway, where would it be possible to find the parts already designed?
 
known the tooth profile, just make a simple blend, or a sweep cut.

tomorrow I will try to make you an example ... time allowing.
 
do a search in our forum for "crylic toothed wheels" you will find in fact gears to download and then adapt them to your purpose.

for those to download from internet try in cadenas.
 
I'm taking a look at the files you reported, and I figured out something more about how to make dentate wheels, thank you!

As for the piece that I have to make, it remains a little more complex, as the throat of the teeth is not straight but is dug along a circular trajectory. I'll train you the design they gave me hoping you can give me some advice.
 

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Wildfire said:
I'm taking a look at the files you reported, and I figured out something more about how to make dentate wheels, thank you!

As for the piece that I have to make, it remains a little more complex, as the throat of the teeth is not straight but is dug along a circular trajectory. I'll train you the design they gave me hoping you can give me some advice.
Click to expand...
Look at this.
do not pay attention to the forms (you can change them as you want), it is important that you study a bit of the applied variable section sweep function.
 

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maxopus said:
Look at this.
do not pay attention to the forms (you can change them as you want), it is important that you study a bit of the applied variable section sweep function.
Click to expand...
thank you so much for the example!!! Now I think I have all the hints to draw the wheel. I'll get to work right away.

then it will be the moment of life.... it would be great to have on the screw a hint to start! ! !
 
Wildfire said:
thank you so much for the example!!! Now I think I have all the hints to draw the wheel. I'll get to work right away.

then it will be the moment of life.... it would be great to have on the screw a hint to start! ! !
Click to expand...
Just use a helical sweep (you will find several examples also in the forum) and then the mirrors compared to one of the two floors passing through the axis of geometry.
Try it a bit, if you can't get a whistle.
 
maxopus said:
Just use a helical sweep (you will find several examples also in the forum) and then the mirrors compared to one of the two floors passing through the axis of geometry.
Try it a bit, if you can't get a whistle.
Click to expand...
Well, the wheel is almost ready (almost because I think they gave me wrong odds, tomorrow I have to make reliefs to check) and I'm starting the screw.

Trouble: I did a helical sweep as you suggested, but how do I set a angle of inclination of the propeller by 20°?
Another consideration, the screw is 4 principles, I thought of creating a series with the helical sweep, but I have some trouble because it makes me start the sweeps in a staggered manner, 3 of the 4 threads are positioned correctly, while the fourth begins above the plan that contains the principles of the other propellers. . .

I didn't understand what you suggested to me to mirror. . .
 
Wildfire said:
I allego the abortion of lives I made ^^^^^
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a question: do you mean a screw with both right and left lines?
a screw therefore able, arrived at the end of the race, to reverse the movement of the transported object?
 
maxopus said:
a question: do you mean a screw with both right and left lines?
a screw therefore able, arrived at the end of the race, to reverse the movement of the transported object?
Click to expand...
reverse the rotational motion of the coupled helical wheel, inverting the direction of rotation of the screw itself. In fact, the end of the wheel does not exist in its own sense, but is linked to other organs coupled with the helical wheel.
 
then it is a normal screw, for what I know the endless reverse the rotation of the gear without reverse the rotation of the shaft and therefore have a double processing, a right-handed and the other left-handed.
 
mmmh thanks to the correction, I will document.
Have you seen the draft? Can you tell me why one of the fillets starts + up others? Where did I go wrong?
 
da wikipediahttp://it.wikipedia.org/wiki/vite_senza_fine#vite_senza_fine
screw without endspeed reducer with endless screw and toothed crown

"without end" so defined because its rotation has the sole purpose of transmitting the movement. the step of the screw can be to one or more principles.

"densed crown" (or helical wheel) gear whose teeth (z) have inclination, profile and construction data compatible with those of the screw to which it mates.

the coupling "non-ended screw-brown" is intended to transfer motion and torque moment with a high ratio between two non intersecting perpendicular axes. affect this relationship the inclination of the screw thread and the number of teeth (z) of the crown. the transmission of the movement is usually given by the screw (and is called "conductor") and this allows to maintain a static situation at the exit of the system. However, there are couplings where the screw and crown have an inclination of the thread and teeth (z) to allow reversibility. that is to say the possibility of having also the crown dented as "conductor", that is, able to transmit the movement to the screw. a disadvantage of this mechanism is that it has <0,5 , therefore for particular angles of propeller, the coupling could be irreversible, in poor words: "the wheel cannot move the screw." the performance is low because you have many creeps and therefore there is a high wear, and then the device should be adjusted over time.
 
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