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G-Code, CAD, and CAM discussions / no
« on: May 31, 2007, 06:44:31 PM »
What I want is a combined linear axis PLUS rotational axis move. Think of drawing spirals. That's a change in radius at the same time as a change in angle.
My original question is how to figure feed rate when you're dealing with mixed units (inches and degrees). I understand inches per minute. I understand degrees per minute (the example you just gave). What I don't see is how to mix inches and degrees to calculate a feed rate.
Or should I look at it all as generic "units", where the x might move 1.000 unit, and the a moves 90.000 units? If I wanted a 1.000 inch and 90 degree move done in one minute, the feed rate would be sqrt(1^2 + 90^2) = 90.006 units / minute?
My original question is how to figure feed rate when you're dealing with mixed units (inches and degrees). I understand inches per minute. I understand degrees per minute (the example you just gave). What I don't see is how to mix inches and degrees to calculate a feed rate.
Or should I look at it all as generic "units", where the x might move 1.000 unit, and the a moves 90.000 units? If I wanted a 1.000 inch and 90 degree move done in one minute, the feed rate would be sqrt(1^2 + 90^2) = 90.006 units / minute?