Need Help! V32 need tool to plunge OFF the work piece - rough machining a face gear


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Thread: V32 need tool to plunge OFF the work piece - rough machining a face gear

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    Default V32 need tool to plunge OFF the work piece - rough machining a face gear

    as the title states, i need to rough machine a face gear. i would like the tool to travel back and forth through the gear tooth profile and basically generate a gear tooth. best way i could describe it would be like a pocket with two open ends, i would think there would be a way to just traverse back and forth but i cant figure it out.... i have attached a .zip of what i currently have....

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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    Here's a file to look at. I used "advanced Planar" which gives you more options than the old planar.... I didn't really look at all your settings. Just a reference to look at...

    The advanced planar has a pattern choice of "up or down"... Then I chose a lead-in and out of Parallel...

    V32 need tool to plunge OFF the work piece - rough machining a face gear-jpg

    Then I added a radial pattern for 57 teeth...

    V32 need tool to plunge OFF the work piece - rough machining a face gear-out_patterned-jpg

    Anyway, there is probably a few other ways... We can look at those too... Most are going to involve moving away from the old, standard toolpaths and using the newer, modulworks paths...

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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    thanks for the reply BurrMan, im using endmills to rough the gear teeth out so i was hoping to avoid any z axis movements while engaged in the work.
    i found the best way to do this was to tighten up my boundary to the very edges of the gear tooth geometry, or even offset it a few thousandths inside the geometry. compute the tool path desired, and then edit the toolpath by extending the cut moves. this seems to bring all z axis movements off of the work, while retaining the toolpath i desired. thanks again for your reply!



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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    I missed the "No Z movements on the surface" part....

    They DO have a toolpath for this.. I made this with "Parallel Cuts" on a surface...

    V32 need tool to plunge OFF the work piece - rough machining a face gear-parallel-cuts-1-jpg

    If you do a lot of this, may want to look into it...



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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    you know.... i always forget about the multi-axis functions.... such a noob move on my part. thanks BurrMan, that will make life a lot easier!

    Last edited by jay_dizzle; 11-27-2020 at 11:33 AM.


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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    There is alot of power in those toolpaths.... thats nice that you already had those...



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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    ok, unfortunately im back.... im trying to use the multiaxis toolpath and everything is exactly how i want it EXCEPT ONE LINE.... it rapids right through my work for whatever reason.... any insight on this?

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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    The purple line is a link move to connect the toolpath from one side of the part to another.

    1) You can use a different link strategy for larger moves

    V32 need tool to plunge OFF the work piece - rough machining a face gear-2020-12-01_13-21-35-png

    By adjusting the large move link strategy from direct to a rapid at clearance. You can also use the " small move size" value to adjust what's considered a small move ...

    2) To keep the toolpath from violating the surface, turn on a gouge check against the drive surfaces with a retract strategy. This will force the link move to be along the drive surface vs violating it.

    V32 need tool to plunge OFF the work piece - rough machining a face gear-2020-12-01_13-25-12-png

    Before gouge check -

    V32 need tool to plunge OFF the work piece - rough machining a face gear-gouge-check-png

    After gouge check -

    V32 need tool to plunge OFF the work piece - rough machining a face gear-gouge-check-png

    You'll notice both screen shots show the bottom v of the surface doesn't fully clean up ( simulating just the finish pass )

    3) You could consider some of the other toolpaths like morph or even equidistant to finish this shape. Depending on how strong you CAD skills are, you can make some simple geometry updates that would allow for a "cleaner" toolpath resulting in a better finish using some of the other strategies.

    Al DePoalo
    Partner Product Manager BobCAD CAM, Inc. 866-408-3226 X147


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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    this is what i get when i turn on my gouge checking... cant say that i trust all those rapids in there?

    Attached Thumbnails Attached Thumbnails V32 need tool to plunge OFF the work piece - rough machining a face gear-screenshot-2020-12-01-130123-png  


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    Quote Originally Posted by jay_dizzle View Post
    this is what i get when i turn on my gouge checking... cant say that i trust all those rapids in there?
    So i'm stuck on another island now, away from my computer... won't be much help...

    Try to track down Al in the after dark group...

    I'll see if i can remote into another system to look. But it wil be some amount of time...



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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    Quote Originally Posted by jay_dizzle View Post
    this is what i get when i turn on my gouge checking... cant say that i trust all those rapids in there?
    Those aren't rapids, they are link moves. Rapid moves show up as dotted lines.

    Al DePoalo
    Partner Product Manager BobCAD CAM, Inc. 866-408-3226 X147


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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    Quote Originally Posted by aldepoalo View Post
    Those aren't rapids, they are link moves. Rapid moves show up as dotted lines.
    i see that now, thanks Al. my boss is now hinting that he would like to try and finish this gear in the mill........ so ill likely be back tomorrow to figure out the most accurate way to finish this thing....

    Quote Originally Posted by BurrMan View Post
    So i'm stuck on another island now, away from my computer... won't be much help...

    Try to track down Al in the after dark group...

    I'll see if i can remote into another system to look. But it wil be some amount of time...
    no worries BurrMan, i am up and running!



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    Default Re: V32 need tool to plunge OFF the work piece - rough machining a face gear

    Quote Originally Posted by BurrMan View Post
    So i'm stuck on another island now, away from my computer... won't be much help...

    Try to track down Al in the after dark group...

    I'll see if i can remote into another system to look. But it wil be some amount of time...
    the Islands,,,very nice



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    Quote Originally Posted by jrmach View Post
    the Islands,,,very nice
    Not really at the moment jr... full draconian lockdowns...

    They think they can isolate....it's getting tough for the specific groups they decided to impose upon...



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V32 need tool to plunge OFF the work piece - rough machining a face gear

V32 need tool to plunge OFF the work piece - rough machining a face gear

V32 need tool to plunge OFF the work piece - rough machining a face gear