2.5 D Machining

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2.5 D Machining

Postby Soapyjoe » Mon Jul 31, 2017 12:27 pm

Hi, I wish to machine a small square component with straight cut (90degree angles) on three sides..... but the fourth side to be machined at a slight angle.
Is there an easy way to do this?
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Re: 2.5 D Machining

Postby Adrian » Mon Jul 31, 2017 12:33 pm

Depends if you have a bit that matches the angle. If not you would have to create the fourth side using a moulding toolpath.
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Re: 2.5 D Machining

Postby Soapyjoe » Mon Jul 31, 2017 12:44 pm

Thanks Adrian,

I am not quite sure (bit thick) what you mean by the moulded toolpath

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Re: 2.5 D Machining

Postby 4DThinker » Mon Jul 31, 2017 12:47 pm

Moulding tool path or the fluting tool path for the slight angle.

1SlopeSideF.jpg

1SlopeSideM.jpg
Attachments
1SlopeSideF.crv3d
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1SlopeSideM.crv3d
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Last edited by 4DThinker on Mon Jul 31, 2017 1:13 pm, edited 1 time in total.
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Re: 2.5 D Machining

Postby Soapyjoe » Mon Jul 31, 2017 12:58 pm

Thanks Adrian,

Usually I cut out the pieces with a straight cutter then, as a second operation taper one of the sides ...holding the piece in a jig
I thought it would be neat to cut out the piece at one go but have never figured how to do it
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Re: 2.5 D Machining

Postby Soapyjoe » Mon Jul 31, 2017 1:01 pm

Adrian sorry could not open the file.... I am using Aspire 8.5
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Re: 2.5 D Machining

Postby 4DThinker » Mon Jul 31, 2017 1:14 pm

Try those files again. I replaced them with files made in 8.5.

The Moulding tool path is on the tool path menu (right side) and created files named SweptProfile unless you've given them a different name. I needs a guide line and profile line to extrude down that guide line.

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Re: 2.5 D Machining

Postby Soapyjoe » Mon Jul 31, 2017 1:29 pm

Thanks Adrian,
That, in principal is what I need to do.
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Re: 2.5 D Machining

Postby Adrian » Mon Jul 31, 2017 2:52 pm

That's not me helping you out. :D
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Re: 2.5 D Machining

Postby Soapyjoe » Tue Aug 01, 2017 10:31 am

Sorry still struggling a bit of with this

What is the purpose of boundary offset in the moulding toolpath ?
Is it similar to normal offset ?
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Re: 2.5 D Machining

Postby Adrian » Tue Aug 01, 2017 11:00 am

Can't explain it better than the Help does.

Boundary Offset

This option can be used to force the toolpath to cut past the edge of the part that is parallel to the drive curve vector. By default the center of the tool will go to the edge of the ends of the selected profile vector as its extruded along the drive rail. It may be desirable to extend this distance to either force the tool down the edge of the profile shape with vertical or steep edges or to ensure the toolpath has gone far enough past the edge to cleanly cutout the final shape with a profile toolpath. The value entered for the Boundary Offset will force the tool past the ends by the specified amount. As such if you want to ensure a vertical or very steep edge at your profile ends is machined you will need to specify a value which is at least the radius of your tool plus a small additional amount (say an additional 10% of the radius). For example if you are using a 0.25 inch (6mm) diameter ball-nose tool for the finish cut then you would specify a minimum of 0.15 inch or 3.6mm (= tool radius + 10%) to ensure the tool would be forced down the edges of your shape. If you wanted to ensure the roughing had also been able to machine these areas then the value should be based on your Larger Area Clearance Tool size instead.
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Re: 2.5 D Machining

Postby Soapyjoe » Tue Aug 01, 2017 4:11 pm

I have seen in this forum screen shots of the 3D view of an object made in Vectric.
How is this achieved
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Re: 2.5 D Machining

Postby Soapyjoe » Tue Aug 01, 2017 4:12 pm

Thanks Adrian for your explanation .... great help
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Re: 2.5 D Machining

Postby rsetina » Wed Aug 02, 2017 6:42 am

Soapyjoe wrote:I have seen in this forum screen shots of the 3D view of an object made in Vectric.
How is this achieved


That's done in the preview toolpath. After simulating the toolpath you get an image of what the part looks like. On that same screen you can save preview image just above the close button. Save it to a location and you can share it from there.
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Re: 2.5 D Machining

Postby Soapyjoe » Wed Aug 02, 2017 10:47 am

Thanks Rick
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