A corner angle on a part is an angle between adjacent linear sections of a part contour or boundary. Corner angles can be located along the outside contour or along a pocket contour.
SURFCAM creates toolpaths by creating offsets from the contour or sides of a part. The offsets around a corner angle will be two lines that may or may not intersect. If they intersect, as in the case of corner angles greater than 180°, the tool path will merely change linear direction at the intersection.
Offsets of corner angles between 150° and 180° will not intersect but SURFCAM automatically extends them so they do. The toolpath will then change direction at this intersection.
The Corner Angle parameter tells SURFCAM how to fill the offset gap when a corner angle is less than 150°.
If a corner angle is less than 30°, SURFCAM will close the gap between the two offsets by inserting an arc or several lines, depending on your selection in the box to the right of the Corner Angle box.
When a corner angle is in the range of 30° to 150° and is less than the value you enter for Corner Angle, SURFCAM will close the offset gap with an arc or several lines, depending on your selection in the box to the right of the Corner Angle box.
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Arc An arc move will be inserted between line moves when the directional change is less than the Corner Angle value. The Corner Clearance value determines the location of the arc. |
Line A line move will be inserted between line moves when the directional change is less than the Corner Angle value. The Corner Clearance value determines the line location. |
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Notes
Corner Angle > 180°
The offsets intersect. The wire path will change linear direction at the intersection.
150° < Corner Angle < 180°
Offsets of corner angles between 150° and 180° will not intersect, but SURFCAM will automatically extend them so they do. The toolpath will then change direction at this intersection.
Corner Angle < 30°
SURFCAM will close the gap between the two offsets by inserting an arc or several lines, depending on your selection in the box to the right of the Corner Angle box.
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If a corner angle is < 30°, lines or an arc automatically fill the gap. |
If a corner angle is > 150°, the offset lines are automatically extended to fill the gap. |
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