Focus Variation, the technique behind Alicona's Infinite Focus 3D optical metrology system, has enabled EDM Department, Bartlett, Ill., to measure and see what it is making down to 1.7µm tolerances. Watch this brief report to see the system in action and learn about how EDM Department implemented the system.
Continuing to provide the Quadra-Chek metrology digital readout for 2-D geometries, Heidenhain Corp. introduces it with a new dark gray faceplate. It is now called the Quadra-Chek ND 1200.
Acoustic emission (AE) sensors detect ultrasonic sound waves emitted when the grinding wheel contacts a part or the dressing wheel and send that information to a process control unit. Monitoring the sound waves and comparing them with reference values allows operators to control the grinding and dressing processes. Variations in acoustic emissions indicate changes in cutting forces, which can then be modified. Some AE sensors are stationary while others rotate with the wheels.n
Experts offer advice for implementing an SPC program in shops. They emphasize that developing an SPC program isn't as difficult as many people think, and that a program can be implemented with few hassles.