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7.4.1 Size
7.4.2 Operating instructions
1) Insert the curve surface pickup carefully into the instrument, and then mount it on the column connectors.
Lock reliably;
2) To use the pickup surface, select a shorter trip as possible, such as: 0.25 sampling level, especially for
small arc;
3) Adjust the column carriage slightly higher. Lower it until the pickup contacts the workpiece. Be careful,
especially as the pickup contacts with the workpiece;
4) Keep the stylus of the pickup aligned with the highest (or the lowest) point of the quasi curve surface;
5) Adjust the body of pickup level and check visually. Check whether the stylus position is near the center.
7.4.3 Measurement
Before measurement, move the workpiece right to half of the travel. Press Start to start measurement. This is to
ensure that the entire measurement travel is symmetry taking the highest point (the lowest point) of the surface as
the center.
7.4.4 Calibration
1) Calibrate the curve surface pickup using a single-line specimen;
2) Calibrate.
Calibration
As shown in the figure, incline the single-line model at certain angle, so that the guide and the stylus pass the line
in order rather than at the same time (which is not the true depth). After measuring, observe the profile graphics.
There is a rectangular deep groove, and the groove depth is the single-line value. There are several methods to
read the depth of model:
a.
Read the Rt value, which may be inaccurate as the location is not proper;
b.
Measure this depth with the mouse using the software;
c.
Measure the actual depth of the outline on the printer, divided by the magnification.
7.4.5 Precautions
1) Be careful to plug the pickup. Do not touch the guide and the stylus, which are key parts of the instrument.
Try to hold the base of the pickup guide bracket (front body);
2) The main difference between curve surface pickups and other pickups is that its guide and the stylus are
parallel, and those for other pickups are in tandem;
3) The curve surface pickup cannot be calibrated using a multi-line calibration specimen due to its structure.
