Which CAM or operation is suitable for this object?


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Thread: Which CAM or operation is suitable for this object?

  1. #1
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    Default Which CAM or operation is suitable for this object?

    I want to machine an object like the one in the attached picture.
    Because it's a geometric object I would avoid to machine directly a 3D surface (i.e. stl). Instead I'm looking for a way to machine using only primitives. I.e. pocketing the inner area, then profile the outside ellipse and so on.
    Right now I'm using CamBam but it seems it cannot machine a sloped path (only in 3D profile).

    Is there a cam more suitable for this job? Or do you see another way to machine it?

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    Community Moderator ger21's Avatar
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    Default Re: Which CAM or operation is suitable for this object?

    What format is the model in?
    If it's .stl file, then you're options are very limited.
    If it's a solid model, try Fusion 360. Or just model it in Fusion 360.

    Gerry

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    Default Re: Which CAM or operation is suitable for this object?

    Quote Originally Posted by ger21 View Post
    What format is the model in?
    If it's .stl file, then you're options are very limited.
    If it's a solid model, try Fusion 360. Or just model it in Fusion 360.
    Actually, it's just a drawing on a piece of paper
    Usually I don't use 3D models for mechanical objects, but only for relief/carving. For mechanical items I prefer to draw primitive shapes and setup basic MOPs (profiles, pockets) to obtain the desired result. This is because as far as I know the 3D machining cannot be as accurate as 2.5D.

    As said I use CamBam and it's great for most of my jobs but it cannot produce a correct toolpath for the sloped surface of this item - until you machine it as 3D.
    I wonder if there are other CAMs that can pocket a sloped area. In the meanwhile I'm going to take a look at Fusion 360.



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    Community Moderator ger21's Avatar
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    Default Re: Which CAM or operation is suitable for this object?

    Yes, there are CAM programs that can do, it, but they tend to be expensive, and you'll need a solid model.

    Fusion 360 will allow you to create a pocket cut, and a profile cut, as well as 3D cuts along the top edge only.

    Gerry

    UCCNC 2017 Screenset
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    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Registered KH0UJ's Avatar
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    Default Re: Which CAM or operation is suitable for this object?

    Well on my opinion, cambam is sufficient enough to work on your object, cambam can work in a wide variety of 3D models, it all depends on how you trick the software to do whatever you want it to do the nicest part of cambam is you have the ability to control the spindle`s movements from start to finish, not relying on "boring autoCAM process"


    @OP: can you post the dimensions of your 3D object? I will post the code using cambam cambam can work even on barrett 50 gun parts on my honest opinion...



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    Default Re: Which CAM or operation is suitable for this object?

    If CamBam won't deal with a slope, it sounds like you need a new CAM program. But it probably will - you just need to think of it as a 3D part, not a 2.5D "pocket," which is flat-bottomed by definition. Use a ball-end cutter for the bottom of the pan (or whatever it is). Or machine it flat and cylindrical and then use a ball-end to cut the slanted edge as a final operation.

    Andrew Werby
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Which CAM or operation is suitable for this object?

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