Siemens SINUMERIK 808D Milling Programming And Operating Manual page 64

Part programming
4.4 Calculating contour elements
Example
The following drawing must be supplemented by the value of the center circle point in order
to be able to calculate the point of intersection between the circle sector of the straight lines.
Figure 4-2
The missing center point coordinate is calculated using the calculator function, as the radius
at the tangential transition is perpendicular to the straight line.
The radius is located at an angle of 90° clockwise to the straight-line defined by the angle.
Use this softkey to select the appropriate direction of rotation.
Use this softkey to define the given end point.
Enter the coordinates of the pole, the slope angle of the straight line, the ordinate of the end
point and the circle radius as the length.
Result: X= -19.499
Y = 30
64
Calculation of M1
Programming and Operating Manual, 12/2012, 6FC5398-4DP10-0BA0
Milling Part 1: Operation