Page 161 - Sensors and Control Systems in Manufacturing

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Cha p te r
T w o

FIGURE 2.118 Measurement of gap between roller and doctor blade.

FIGURE 2.119 Measurement of surface run-out of laser disk.

• Displacement of printer impact pins. The visible beam spot
facilitates positioning of the head of a pin-shaped workpiece,
enabling measurement of the vertical displacement of impact
pins (Fig. 2.120).
Automotive manufacturing industries:

• Measurement of thickness of connecting rod. Measures the
thickness of the connecting rod by processing the analog
inputs in the digital meter relay (Fig. 2.121).
• Measurement of depth of valve recesses in piston head. Measures
the depth of the valve recesses in the piston head so that
chamber capacity can be measured. Iron jigs are mounted
in front of the sensor head, and the sensor measures the
distance the jigs travel when they are pressed onto the piston
head (Fig. 2.122).∗

∗ Nonlaser sensor.