HEIDENHAIN ND 1300 VED and Crosshair Systems - Manual (Page 84)

64 QC-300 Series User’s Guide
Multiple edge probe
The multiple edge probe consists of a standard crosshair with two small concen-
tric circles at the center for positioning the edge detector. Points will be probed
manually for some features as they are when the single edge probe is used, and
automatically for line, circle and arc features when the probe is seeded.
Probe seeding
When points are probed automatically as diagrammed at the right, the probe
must first be seeded by probing the minimum number of points required for
a geometric definition of the feature type. Only lines, circles and arcs can be
probed automatically.
• Line Points probed automatically after seeding with 2 points
• Circle Points probed automatically after seeding with 3 points
• Arc Points probed automatically after seeding with 3 points
• Point Points probed manually - identical to single edge probe
• Distance Points probed manually - identical to single edge probe
• Angle Points probed manually - identical to single edge probe
• Slot Points probed manually - identical to single edge probe
• Rectangle Points probed manually - identical to single edge probe
When probing lines, circles and arcs, the multiple edge probe must be seeded to
provide the system with a general description of the feature location. The location
of seed points is important. The order of seed points is important for arcs.
• Line Seed by probing 2 points at the extreme ends of the line.
• Circle Seed by probing 3 points evenly distributed around the perimeter
of the circle.
• Arc Seed by probing 3 evenly distributed points in sequence from
the beginning to end of the arc.
The seed points can be entered manually by
pressing the Enter key, or automatically using
the auto-enter function.
When all the required points have been seeded, a green arrow and red circle are
displayed. Move the stage to place the green arrow into the red circle to initiate
automatic probing of the remaining points and complete the measurement.
Auto-enter
enabled
Auto-enter
disabled
When the probe is seeded... move the stage to place... the arrow in the circle