System information

SECTION THREE - CONVERSATIONAL INPUT SCREENS
F3 (Tangs) Mill-Geom-Tangs
The F3 (Tangs) screen is used to compute the intersection points necessary for a tangent arc or
tangent line between two arcs. When this function is used the first arc and the tangent line or arc
will be entered into the program. The second arc information will only be used for calculation
purposes. This feature was developed to enable a series of tangent lines or arcs to be
programmed consecutively. Therefore, a tangent line or tangent arc command is normally
followed with an arc command describing the second arc.
To determine the value of the right or left entries on these screens, draw a line connecting the
centers of the two arcs in the direction of tool movement. Then determine if the desired points
are to the right or left of this line and enter those values.
The general sequence for the above shape is as follows.
Event 1 Line L1
Event 2 Tangent line or arc function describing arc R1 and line L2 or arc 3
Event 3 Arc R2
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