Ngiolett
Guest
Now I understand, another question I don't have the same problem where the right rump is?
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MassiVonWeizen
Guest
you can omit it if you do the detachment as I have indicated otherwise if you do everything attached the tolerance is unreliable to have a functional locking.the professor told us that in this exercise we can omit that tolerance
Now that you raise this question you make me think that maybe with advising you the spacing I said a cow... I have to think about it better. definitely missing something that drags the tree to the wheel of the pulley, so I would say you have to insert a stick on the conical part and respective seat on the wheelNow I understand, another question I don't have the same problem where the right rump is?
PIETRO2002
Guest
If rectified, a wrinkle may be fine, 0.8.Right, I put a roughness of 0.4.
the professor told us that in this exercise we can omit that tolerance
MassiVonWeizen
Guest
for coupling with a bronze wrinkle of 0.8 is also excessive. 1.6 of lathes is enough
Ngiolett
Guest
applying a mating with interference I get a force and consequently I go to transmit the pulley wheel to the tree. Why should I insert a key?Now that you raise this question you make me think that maybe with advising you the spacing I said a cow... I have to think about it better. definitely missing something that drags the tree to the wheel of the pulley, so I would say you have to insert a stick on the conical part and respective seat on the wheel
correct me if I'm wrong.
MassiVonWeizen
Guest
apart from that on a conical part you can not mate with interference because for their shape the surfaces slip up to contact and not beyond; the locking takes place through pressure between the surfaces given by the locking of the nut.applying a mating with interference I get a force and consequently I go to transmit the pulley wheel to the tree
That's the question. If you want to transmit the bike through forced coupling you cannot have the wheel in contact with the bronze (in no case) and with the shouldering of the tree because there is the possibility that the wheel leans on the shoulder and therefore is not stuck on the conical part. therefore it is necessary to make sure that it is not possible that there is contact with the shouldering and in such case it stretches of 1mm as indicated. *
If, on the other hand, the bike is transmitted with a key, the wheel must not be in contact with the bronze, but can be safely blocked against the shoulder.
I attach a pdf with mounting (graphics let you want).
- on the top left your installation with theoretically all accurate.
- at the top of the center an inclination error
- at the top right a length error
as you can see with such errors (here slightly exaggerated) your so-called interference no longer exists and the fact wheel is blocked only by the nut but will keep little because the wheel has radial play and slowly will take over.
on the bottom left the installation I suggest you; light 0.5 side shouldering ensures full contact calibrates conical surfaces while light side nut ensures that they will push on the wheel and not on the shouldering of the shaft
* It must be considered that however in this way it leaves freedom to the tree to translate axially; if this is not admissible, even for 0.5mm, you can further stretch the conical part and:
- insert a seeger so that the wheel is locked with pressure on the conical part and the shaft is blocked by the seeger
- insert a spacer to fit the mounting
Attachments
Ngiolett
Guest
I thank you for the amendments to the aid tomorrow.in this page the explanation of conical mounting with nut.
Note that a threaded wreath is used with safety rosette and not a simple nut with rosette.
on the left is inserted a spacer that allows to be adapted and therefore guarantee contact between the conical parts
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ciao