intermediate shaft reducer parallel axes

[Uruz7]

It is the first time I open a discussion in this forum, so I hope I do not miss the section and do not break various rules of the regulation, in which case I apologize earlier.

the question that I ask you is the following: in the middle shaft of a two-stage reduction gearbox with parallel axes, is it possible to insert a bronzine between the two serrated wheels, so as to avoid an increase in the section of the shaft and its shoulders for the locking of the wheels themselves?

Thank you in advance.

 

[meccanicamg]

hi! it would be good to post a pattern of what you're saying because I think you're calling in an improper "bronzine" way what is a "distantial" between gears and bearing jokes.

If that's what you're asking, I'd say the thing is feasible provided that the useful section of the tree itself is not undersized for the transmission of motion and for the reaction of the various forces exchanged in rotation.

bronze is a mechanical organ with a low friction where it rotates, translates, oscillates or rototrasla a tree. is characterized by radial/axial or combined load capacity.

Spacer usually resists only to compression efforts along its axis and serves to maintain two objects in place.

 

[Uruz7]

 

[Uruz7]

the problem has arisen since the diameter of the wheel 1 returns 64 mm, while following the fatigue dimensionalization the d4 indicated in the figure is 74 mm (I assumed d4/d5=1.2)

 

[Enigma]

hi "uruz7", but do the "brown root 1" and your axis in one piece?

enigma

 

[Uruz7]

Hello, enigma! I don't know what you mean. as far as I know, the common use is to shove the wheels on the tree with tabs and/or keystrokes, and therefore the shaft with shoulders and similar must be prepared.

 

[meccanicamg]

Hello, enigma! I don't know what you mean. as far as I know, the common use is to shove the wheels on the tree with tabs and/or keystrokes, and therefore the shaft with shoulders and similar must be prepared.

normally the dentate wheels that have dimensions not so much greater than those of the tree are made of piece, therefore it could be a solution to have a piece wheel with the tree and the other calettata with tab.

However it was as I imagined, yours are long spacers and not bronzine.

 

[Enigma]

Hello, enigma! I don't know what you mean. as far as I know, the common use is to shove the wheels on the tree with tabs and/or keystrokes, and therefore the shaft with shoulders and similar must be prepared.

Io intendo questo. ...
as you can well notice all "pignoni" are made from one piece only with the axis.

enigma

 

[Uruz7]

Okay, now it's clear!

then, what I am doing as you understood is the "classic" project of the construction course of machines; Therefore, since this is my first real design experience, I do not know which of the two solutions is better (I assume that the choice depends on factors such as encumbrance, transmitted couples, speed of execution, etc.). we say that, if the solution to put a space between the two wheels was feasible, so as to have d3=d4=d5, I would prefer it for the simple fact that the checks were already made; But I don't have any problem to listen to you experts and start over, since I'm here to learn.