cylindrical cam

[power23]

Hello, guys.
I ask you for help with a cylindrical cam.
attached sketch of what I should accomplish.
in practice a common clindrical cam (with throat). ...see a frontal view (sx) and a view of the development of the trajectory (dx).
the cam must make an object mounted on the rotation axis 90° and then return to position 0.
the axis of rotation is tied to the cam by means of wheels "wheels" that the axis of the wheel precisely as you see does not converge towards the center of the cam... but is parallel to the rotating axis.

at the extreme dx you see the example of the wheel axis that converges in the center.
In this case it is easier because (called very simplified) I wrap the trajectory on the cylinder and it is made.

but in my case (sx) it is not worth this speech because otherwise the wheel is nailed in the curves of the cam (guaranteed and seen in person)....but then I ask you:

how can I simulate and then create the throat for the wheel in proe precisely considering that the wheel (and therefore also the tool) must be moved by xmm compared to the rotating axis?

Thank you for your help... I hope to be clear. ..unfortunately I am obliged not to use the "converged" solution to dx.

 

[power23]

Hello, guys, I created the cam in question... now I have another question.

How do I tell a wheel that needs to follow the profile... the throat of the cam?
I have to create a reference axis. . What?
If I'm not wrong, the bond cams.

I must bind the axis of the wheel to this hypothetical axis (mezzeria of the throat).
I tried with the tangency between the wheel and the side of the throat but it's not right.

Thank you very much.

 

[DANI-3D]

Hi.
you need to create the necessary connections for the wheel to be free to move from the cam, then go into applications > mechanism > cam and select the contact surfaces between the two objects.

 

[Preparation-H]

Hello, guys, I created the cam in question... now I have another question.

How do I tell a wheel that needs to follow the profile... the throat of the cam?
I have to create a reference axis. . What?
If I'm not wrong, the bond cams.

I must bind the axis of the wheel to this hypothetical axis (mezzeria of the throat).
I tried with the tangency between the wheel and the side of the throat but it's not right.

Thank you very much.

Since you solved it, could you tell us how you proceeded?
could always serve some other user... :smile:

Bye!
p-h

 

[luca frati]

hello to everyone, sorry if I interfere.... I hope someone has already passed before me!!!
I find myself having to create the profile of a cam in the "mechanism" environment with the curved function. the spline that represents the profile I managed to generate it, but once created the cam, mounted and put in operation, I realized that its profile was not correct. to make it simple, where the cam must have the circular profile, it turns out to have a different profile. in fact obtained the spline with the curd, to verify the correctness of the profile, I created a sketch and generated a circumference with the same radius of the circular part of the cam... result the part of the profile of the circular cam and circumference are inexplicably coincidence only at one point and not on the whole circular profile part.
I thought there was a breakdown or error of alignment, but I checked, that's not it.
I tried to create a simple circumference with this method. result, the circumference that is obtained from the curved method is not coincident with one to it concentric generated at a later time by a simple sketch plan.
There are also two images explaining what I did.
what I do not understand is why the two circumferences, the one obtained by the method "curvatraccia" and the one obtained by the sketch, although concentric are not coincident.
thank you all... .http://farm7.static.flickr.com/6161/6188154755_f9113b8abb_s.jpg[IMG]
http://farm7.static.flickr.com/6155/6188154687_36b0faa48b_s.jpg