SOLIDWORKS ‘Splines / Bcurves’ to WoodWOP contours.

If you have ever needed to create a smooth, ‘arbitrary’, curved contour in WoodWOP from a SOLIDWORKS model you have probably been a little disappointed with the results.  ‘It’s not smooth!’.

The primary reason is in how the spline is converted into the WoodWOP contour and not how it is machined.

Most conversion programs will convert points on the spline to accurate contour points but they connect the points with straight lines.  Only by reducing the distance between the points can the contour be improved.   ONGAA CAM takes the connecting line into account as well and if it is curved, it supplies WoodWOP with the information to define an ARC.  This arc simulates the actual spline much more closely.

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Take for example a perfect circle and imagine selecting 8 points along the circle to ‘guesstimate’ the contour.  This is of course exaggerated but it illustrates the point.  Now use those points to draw the shape, first with arcs and then with straight lines.

The difference is clearly visible.

 

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The contour can of course be smoothed further using WoodWOP’ drive parameter options provided your increments are small enough.

 

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