Restrictions of the inner corner selection
- The programmed contour must be closed.
- The last motion block of contour may not be a full circle.
- The first motion block of contour must be a linear motion block as well as the motion block after deselection of TRC .
- The point P1 must at least have the distance of the tool radius to all elements of the contour.
- The selection block may not cross an contour element, with exception of the first and the last motion block.
- Changing the side of selection of TRC while TRC is active is not permissible.
- Changing the radius of tool while inner corner selection is active is not permissible.
- The selection side of the TRC must be selected from the position of the selection in such a way that the tool does not cross the programmed contour.
- The enclosed angle of the first and the second motion block after the selection of TRC may not exceed 180 degrees.
Causes for the restriction of angle:
In the graphic the TRC should be selected at the right hand side of the contour. With an angle about 180 degrees between the last and the first motion block of the contour the first point of the equidistant path will be determined with the direct method of TRC. This first point of the equidistant path is P3 in the diagram. The diagram clarifies that the staight line between the points P1 and P3 hurts the red drawn contour.
The angle designated in the diagram with starting angle may amount up to 180 degrees. In this range of angle the cotour is not damaged. The shown angle is larger than 180 degrees. The alternative point of selection P1* prevents this contour damage.
Notice | |
With injury of one of the restrictions an appropriate error is created. |