Help with tapered holes

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Originally Posted by tinmanpk59

Have tried your idea out in VCarve, its a nice one but takes too long to generate the hole. And my machine will not take a massive ramp up in speed and feed rates to reduce the cycle time to a respectable level. Pity because I like this approach. Thanks for the input.

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You can put less lines in I copied 400 times for a 12mm end mill to give you a superfine finish less would be quicker, play around until you find best to suit your setup.
Plug in "chamfer" only works in V9 I think.

Phill

Maybe you could use a taper pin reamer. There are plenty about on the web but you might be a bit limited with angles. Or something like this
https://www.toolstoday.com/3-5-7-pat...lunge-bit.html
What do you need the tapered holes for.
Cheers
Andrew

Take a look here, they do 7 degree cutters:

https://www.drill-service.co.uk/prod...lling-cutters/

not ultra cheap, but I'm told their quality is good.

Thank you for the link, will check it out.

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Originally Posted by tinmanpk59

Hello All
I have been trying to get my head round cutting out tapered holes via Vectric VCrave Pro without success and I am after some pointers. I want to be able to rough out the tapered circle pocket, then do some kind of helix interpolation down the tapered sides to smooth out the steps. Would be helpful if I could do this in VCrave, but if not an example in pure G Code would do.

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Hi there.
I know this is months ago, but.
If it is any help you can cut, straight, convex and concave tapered holes with the software CAMBAM (£97) and its free to download a trial that allows you to use it 40 times with no limits.
You select the hole you want to cut in the viewer and select profile operation. In the properties section of this operation you just created, set for inside profile, and then set the options for side profile shape (straight, convex, etc) and the angle in degrees (I think it is degrees). CAMBAM will then calculate the path based on the cutter details you have selected.Attachment 29265

regards

Interesting, thanks for that. Does it allow you to do chamfers with an arbitrary angle around the edge of a part as well by any chance??

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Originally Posted by Voicecoil

Interesting, thanks for that. Does it allow you to do chamfers with an arbitrary angle around the edge of a part as well by any chance??

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Yes.
Examples here show circles but any shape will do.
https://cambamcnc.com/doc/1.0/cam/side-profile.html

There's also a "Break Edges" plugin I use for chamfers but angle depends upon the V tool used.
http://www.atelier-des-fougeres.fr/C...eak_Edges.html

Another, but slower method, would be to create a 3D surface with required chamfers then use a 3D Machining Operation.

Cheers for that, I might buy Cambam then. I'd thought of the 3D route, but as you say, slower to machine (and draw up!) when the job's mostly profiling with a few angled edges.

I like Cambam a lot, it's easy to master but powerful as well. It is greatly improved by the large selection of plug-ins available to extend it's capabilities and the support forum that backs them up. The trick is knowing where to find them...

http://www.atelier-des-fougeres.fr/C...ugin_menu.html