Nutating head kinematics

danilom
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08 Nov 2019 07:16 - 08 Nov 2019 07:16 #149907 by danilom

Nutating head kinematics was created by danilom

Ok I really searched for the correct therm for this 5 axis configuration but only found that its called NUTATING head.

So its CA head , C is rotating around Z at an offset and A is tilted less than 45 degrees (we need to measure this angle)

Any suggestions where to start with kinematics?

Its something like this

Last edit: 08 Nov 2019 07:16 by danilom.

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andypugh
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08 Nov 2019 13:09 #149915 by andypugh

Replied by andypugh on topic Nutating head kinematics

How good is your 3D trigonometry? It seems that it shouldn't be too hard to calculate the tilted axis direction, then calculate the tool direction from that. The main choice would be about choosing a coordinate system reprentation you are comfortable with (spherical coordinates, direction cosines, vectors) and then deciding how to manipulate the numbers (sine / cosine geometry, rotation vectors...)

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Yannis
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16 Nov 2019 09:47 - 16 Nov 2019 09:48 #150459 by Yannis

Replied by Yannis on topic Nutating head kinematics

Hi
i just finished my new B,C axis head and i m trying to edit a post processor
where can i find info(for trigonometry) to do that
is there something like user guide
thanks

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Last edit: 16 Nov 2019 09:48 by Yannis.

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andypugh
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16 Nov 2019 10:49 #150464 by andypugh

Replied by andypugh on topic Nutating head kinematics

Which CAM system? You might be better asking on the dedicated forums.

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Yannis
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16 Nov 2019 12:04 #150467 by Yannis

Replied by Yannis on topic Nutating head kinematics

Alphacam and the re seller ask me a price for the post processor out of my budget

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andypugh
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17 Nov 2019 21:25 #150548 by andypugh

Replied by andypugh on topic Nutating head kinematics

I suspect that if the Alphacam post-processor isn't documented by AlphaCAM then you will have to work it out by inspecting the existing post-processor code.

Perhaps you need to use something other than Alphacam?

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Yannis
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18 Nov 2019 07:01 #150569 by Yannis

Replied by Yannis on topic Nutating head kinematics

Any suggestions?

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danilom
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18 Nov 2019 08:42 #150571 by danilom

Replied by danilom on topic Nutating head kinematics

Maybe Fusion 360?

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Yannis
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19 Nov 2019 05:42 #150609 by Yannis

Replied by Yannis on topic Nutating head kinematics

Thanks i will check it

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danilom
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27 Nov 2019 12:35 #151342 by danilom

Replied by danilom on topic Nutating head kinematics

This is the picture of real head, friend and I are close to finding the right calculations, after that I will measure the rotational offset and the incline angle of the head as its not exactly 45 degrees

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Nutating head kinematics

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