A Study of Fineblanking for the Manufacture of Flueric Laminar Proportional Amplifiers.

摘要

A nonconventional stamping process,known as fineblanking,is investigated for use in high-volume production of flueric laminar proportional amplifiers. The investigation includes the standard deviation of critical dimensions,supply and control flow measurements for a constant pressure,amplifier gain,common-mode rejection ratio (CMRR),and cost breakdown. The present study indicates that fineblanking yields a significant improvement over metal photochemical etching (a widely used fabrication technique) in the repeatability of geometric parameters. Typical standard deviations of a nozzle width are less than 0.5percent. Further, a 61.3-percent improvement of the mean CMRR was observed. (Author)