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reducer size

  • Thread starter Thread starter dsquaredcri
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dsquaredcri

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Hello, everyone.

Is anyone able to help me carry out the annexed exercise? Thank you in advance
 

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Hello, everyone.

Is anyone able to help me carry out the annexed exercise? Thank you in advance
Hello, I invite you to read the Regulation ed a show up in the dedicated discussion.
Moreover it is necessary that you describe in detail the problems and difficulties encountered, otherwise your request could be read as "I have happened this exercise to do, someone can do it in my vex?", and this certainly does not call users to give you a hand.

Riciao.
 
already warned "who of duty". . .
... which are neither moderators nor forum administrators;-)
I don't know if I've been explained!
 
sin.
I think we could have some laughs.

But why don't we fix it?
so then their prof. will be forced to zero everything and start over... .
You know laughs! !

:biggrin:
 
:3559:

enigma

p.s. one thing is to have a doubt and another is to say "you do me entirely the task"... (the friûl in the ringracie and no dismentê)
 
"The friuli thank and do not forget"
is a "slogan" invented by the Friulians to thank all those who, directly or indirectly, helped us during the earthquake of '76
 
and what would you like to laugh about?
on a student who doesn't bother to solve a job if he does it on the internet?
more than laughing, I'm crying! :frown:
I'm running the shot.
not only does he not get rid of the task, but he does not even rub the text back.
 
And he doesn't even try a defense of office to apologize.

The more you go to the north, the less they want to work!
 
Hello, everyone.

Is anyone able to help me carry out the annexed exercise? Thank you in advance
I would say that in addition to the non-presentation and the question a little banal even if in fact it is necessary to use the head the following:

- in the text there is wrong that it is not a change but simply a gearbox (see that there are no wheels and the gearbox indicated) or better is a multiplier
- in the text we talk about cemented steel and I would say that using a cemented and tempered 18nicrmo7 we really go very strong as resistance. already with a 42crmo4 with full tooth surface tempering we are that lambda = 20 is excessive
- in the text we talk about the ratio of total transmission as it is right that it is but not a reducer but a multiplier
- theoretically calculate the relationship between the wheels, use the known primitive diameters and draw the pairs of gears, get the module from the first put to system with the definition of lambda
- the primitive diameters in the text are only indicative but are not right
- verification according to ISO 6336 legislation
- binding reactions in 3 dimensions given the axial thrust as well as radial and tangential of the helical wheels (remember to make z2 and z3 with propeller in the same direction in order to subtract the axial effects)
- worse stress where the effects are added, calculate with von mises the tension and compare it with the admissible one
- fatigue test with alternating bending and constant twist with gough pollard or use the wohler diagram with all the cofficients
- use expansion theory and check the compression sigma on tree/wheel according to hot coupling and verify the actual transmissible torque
- check cutting and surface pressure wheel/language/shaft
- use classic formulas for wheel geometry
- sizing at the combined fatigue limit and checking duration (see skf)
- tolerances (see skf)

I would say that this is the logical thread and analysis of the exercise
 

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