John Summers
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Everything posted by John Summers
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Yes, CG777, MODIFY-BREAK-SPL TO ARCS.
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There's no direct lines-to-arcs converter. I'd create ARC-3-POINTS to find the arc radius, then float the arc in as a fillet, and delete the lines.
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Barrel cams are best cut now with ROLLDIE. Use the SLOT option. It's also easiest to work from the flat, since ROLLDIE sort of combines axis substitution with a special offset. If you need a real cam rise and fall, cycloidal or modified harmonic, contact me.
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Use a flat layout of the cam. Assuming the axis of the cam is on X, one revolution of the cam is pi*dia. Then any angle on the cam becomes a Y value by the following relationship: y/(pi*dia) = A/360. Example: dia=4, A=70 deg. then y=pi*4*a/360 = 2.443 in. in Y. To machine barrel cams, always use the ROLLDIE C-hook. It offsets for a slot from the centerline, and works nicely from a flat layout.