On 15 June 2011 13:51, Viesturs Lācis <[email protected]> wrote: > Well, I think that the code can be derived in following way: > 1) draw the required shape; > 2) offset by radius of grinding wheel; > 3) that would produce the shape in XY coordinates;
I think that this would work, though the offset would need to be in the direction at right-angles to the cam profile local to the point being considered. > 4) now these XY coordinates have to be transformed to polar > coordinates, where angle is A and radius is X, Z or whichever > coordinate that moves the grinding wheel; Whereas this needs to be with the cam axis as the centre. Typically a cam profile is derived from a table of rotation angle and lift (or so I understand) so the input data is in polar coordinates. (well, probably cylindrical coordinates) -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
