Preparing roughing and finishing toolpaths

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After a part has been faced, you can then rough

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and then finish a part using two profile passes.

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Profile roughing removes the bulk of the stock from the part, and profile finishing finishes it.

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For this video, open the file Rough and Profile.f3d. In the Manufacture workspace, in the Browser, under Setup1, select the Face1

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In the Manufacture workspace, in the Browser, under Setup1, select the Face1 toolpath to review it.

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So far, this part has been faced.

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Now, it is time to create a roughing toolpath.

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On the Toolbar, Turning tab, expand the Turning drop-down and select Turning Profile Roughing.

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The Profile Roughing dialog displays.

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From here, you can configure the cut direction and tool orientation, and you can contain the toolpath.

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From the Tool tab, under Tool, next to Tool, click the selection tool.

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This opens the Tool Library.

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From the Documents library, select a tool you can use to rough the part,

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such as tool 1 in this example, which is a right-hand turning tool.

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Click Select.

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Back in the Profile Roughing dialog, click OK.

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The toolpath displays.

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Notice that between the flanges, the toolpath attempts to clear the area that should be grooved.

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Also, the toolpath does not extend past the part as much as it should.

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To make the toolpath more accurate, you can adjust it.

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From the Browser, right-click the Profile Roughing toolpath,

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and from the shortcut menu, select Edit.

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From the Profile Roughing dialog, open the Geometry tab.

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To expand the tangent of the front of the toolpath,

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under Front, in the Tangential Extension field, enter, “.08”.

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Next, edit the tangent extension for the back of the toolpath.

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Under Back, set the Tangential Extension to “.3”.

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Click OK.

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Review the updated toolpath.

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It now extends beyond both the front and back of the part.

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Edit the toolpath again.

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From the Profile Roughing dialog, open the Passes tab.

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Under Cycle and Direction, notice that Grooving is currently set to allow radial grooving.

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This lets the tool plunge into areas that undercut the set outer and inner diameters of the part.

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To correct this, expand the Grooving drop-down and select Don’t allow grooving.

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This ensures that the tool will not dip into any undercut areas of the part.

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Click OK.

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Again, review the updated toolpath.

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Notice that now, the toolpath is not diving into any undercuts,

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and instead is just roughing the outside of the part.

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It is best practice to leave extra stock for the finishing toolpath to clear.

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Edit the toolpath once more.

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From the Profile Roughing dialog, open the Passes tab again, and under Stock to Leave,

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set both X Stock to Leave and Z Stock to Leave values to “.01”.

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Click OK again.

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The toolpath updates.

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Zoom into the toolpath.

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While it appears that the toolpath is colliding with the part,

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it is actually the yellow shaded area that depicts what the toolpath would leave behind of the stock.

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After successfully creating a roughing toolpath, you can create a finishing toolpath.

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Because the roughing toolpath is already configured to the part,

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you can derive the finishing toolpath from it.

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To do this, from the Browser, right-click the Profile Roughing toolpath

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and select Create Derived Operation > Turning > Turning Profile Finishing.

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The Profile Finishing dialog displays.

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In the Tool tab, under Tool, next to Tool, click the selection tool.

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The Tool Library displays.

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This time, from the Documents library, select a finishing tool, such as tool 2 in this example.

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This is a sharper finishing tool than the roughing tool selected previously.

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Click Select.

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Back in the Profile Finishing dialog, open the Geometry tab.

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Since this is a finishing operation,

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the toolpath does not need to extend as far back as the roughing toolpath.

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Under Back, set the Tangential Extension to “.2”.

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Next, open the Passes tab.

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Ensure that Stock to Leave is disabled, and that the Number of Stepovers is set to 1.

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Click OK.

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The toolpath displays, but, in the Browser, the toolpath has a warning indication.

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In the Browser, next to the Profile Finishing toolpath, click Warnings.

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The Profile Finishing Warning dialog displays,

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indicating that the lead-out has been modified due to a gouge with the remaining stock.

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Close the dialog.

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Edit the Profile Finishing toolpath.

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From the dialog, open the Linking tab.

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You can change the Lead-Out from here.

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Under Leads & Transitions, the Lead-Out is currently set to be the same as the Lead-In.

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Deselect Same as Lead-In.

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Then, in the Linear Lead-Out Angle field, enter, “90”.

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Click OK.

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The toolpath updates, this time without warnings.

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Preparing roughing and finishing toolpaths is a highly customizable process

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that can be simplified by creating derived operations.