Need Help! 5 Axis setup Fusion 360


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Thread: 5 Axis setup Fusion 360

  1. #1

    Default 5 Axis setup Fusion 360

    Hey everyone! I'm really new the the whole CNC thing... I just got myself one of those inexpensive chinese 5 axis CNC machines running Mach3. With my current client base I feel that I can tune it to make some good parts (plastics woods etc.) to make it worth the money, and let me learn as many of the ins and outs as possible before investing in a more expensive machine. The really nice thing is it can be a 3axis because the rotaries are removable. Anywho...

    I'm using Fusion 360 for my CAM right now, and have a question about setups... the B axis is below the A axis (see the photo of the table attached), what parameters do I need to adjust to make sure that process posts correctly? Do I need to input the origin/stock top as a specific height about the A axis?(Which would change for different vises/chucks/mounts of course) Any useful information would be greatly appreciated!

    Thanks
    Cade

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  2. #2
    Gold Member daniellyall's Avatar
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    Default Re: 5 Axis setup Fusion 360

    You have to set the center of rotation in cam, it makes it easy if you model the 4th and 5th in and keep the model in it's own file with the center of rotation as a sketch that you can pick easily.

    Then what you do is import the model of the 4th and 5th axis into a new model then when it's set in it's correct position you import the model what goes on the 4th and 5th then go into cam and do the setup first setting the first cut positions wcs and picking the model and setting the stock then you do the first toolpath, then if the next toolpath is on a different axis you set it's position in the toolpath useing the wcs sketch to set it's wcs.

    Have a look at this vid it will help there are other ones on the fusion youtube and hsm youtube channel as well



    <img src="https://ivxo1q-dm2305.files.1drv.com/y4mENMmTr_Cabc7pR0FUdB6gtbADq2JbuG4_rGy0eBQvLJx19pTi6TqMUIJN0xgOyDIc0gWoxYhS38HpbSTFGdfaK-o42IOU6jczrhDpfpCOTNGL1X6hvZCbgj0y35gqmq1YGTrWwShYGV-C7lXA2esy0Pi_WfnBSyroDLSGXwce4uSr1U7op7srdi78rispHCa_K4aFlTlJPVkkNWMfgh_Tg?width=60&height=60&cropmode=none" width="60" height="60" />

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  3. #3

    Default Re: 5 Axis setup Fusion 360

    Thank you very much for the information! My B axis has a mounting plate which I will be using multiple vises on for different shape stocks I will be using. I'm sure it's possible to model the table, and then model my different vises/chucks and place them together? I will do some research on this later, but if it isn't possible I'd rather just know what to research from the get go!

    Thanks
    Cade



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    Default Re: 5 Axis setup Fusion 360

    Good advice Daniel,
    Build the Cad model first of the table, create a axis test Gcode file to move the machine
    (i hear the thought "how") Send me the file and i'll add those
    create point-vectors to pass motion commands the postprocessor
    Points do the positioning, vectors are the sine/cosine of the angles
    the postprocessor translates into degrees of rotation.

    This is really confusing to most. it's just geometry, we all have to learn

    Been doing this too long


  5. #5

    Default Re: 5 Axis setup Fusion 360

    Quote Originally Posted by bostosh View Post
    Good advice Daniel,
    Build the Cad model first of the table, create a axis test Gcode file to move the machine
    (i hear the thought "how") Send me the file and i'll add those
    create point-vectors to pass motion commands the postprocessor
    Points do the positioning, vectors are the sine/cosine of the angles
    the postprocessor translates into degrees of rotation.

    This is really confusing to most. it's just geometry, we all have to learn
    Do you have a link maybe to some further information on how the post processor uses that geometry? I understand the purpose of the points and vectors, but don't quite understand what they are directing the machine to do. Are they specific for the movements, or are those vectors just part of the WCS?



  6. #6
    Gold Member daniellyall's Avatar
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    Default Re: 5 Axis setup Fusion 360

    Have a look at the vids here it how to set up the wcs and stuff like that https://www.youtube.com/channel/UCgs...KdOYpxY7JiiovQ

    Do what callouscade said you realy need to know what you are doing when setting the point vectors and stuff like that in the post other wise you wont have much of a machine left sinces the wcs in in spaces I wont even touch setting that stuff.

    If you wont to read up on it have a look at this forum https://forums.autodesk.com/t5/hsm-p...forum/bd-p/218

    <img src="https://ivxo1q-dm2305.files.1drv.com/y4mENMmTr_Cabc7pR0FUdB6gtbADq2JbuG4_rGy0eBQvLJx19pTi6TqMUIJN0xgOyDIc0gWoxYhS38HpbSTFGdfaK-o42IOU6jczrhDpfpCOTNGL1X6hvZCbgj0y35gqmq1YGTrWwShYGV-C7lXA2esy0Pi_WfnBSyroDLSGXwce4uSr1U7op7srdi78rispHCa_K4aFlTlJPVkkNWMfgh_Tg?width=60&height=60&cropmode=none" width="60" height="60" />

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  7. #7
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    Default Re: 5 Axis setup Fusion 360

    Here is a link to the Supreme Guru's of postprocessors.
    Austin N.C. | GPost and CAM Products & Services

    This was explained to me 40 years ago tool axis vectors conversion to table motion degrees.
    This is easy compared to calculating the dot-product-of'-vectors of the actual tool position.
    https://en.wikipedia.org/wiki/Dot_product

    I had the PHD's of math and computer science at the end of the telephone during development of multiaxis cam.
    They made this happen math-wise,,
    I am just the machinist using their calcs, I do the pathing..
    This is the 7axis i programmed with those tool axis vectors
    And internal machining with 4axis

    Just Math-Magicical.......
    serial strings of point vectors putting $$ in my back pockets.

    Been doing this too long


  8. #8

    Default Re: 5 Axis setup Fusion 360

    Thanks for that info! I understand the math behind it now... now I just need to motivate myself to actually do it. Once i figure it out once it'll be a piece of cake!

    Thanks everyone for the help!

    Cade



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    Default Re: 5 Axis setup Fusion 360

    Quote Originally Posted by callouscade View Post
    Thanks for that info! I understand the math behind it now... now I just need to motivate myself to actually do it. Once i figure it out once it'll be a piece of cake!

    Thanks everyone for the help!

    Cade
    Any update?

    I have been looking at adding that same 4th & 5th axis to my machine but am unsure its the best option.

    Thanks in advance for your input.



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