40 mm Artillery Shell

Most munitions measurement is usually performed in an off line fashion using quick and easy flush pin depth gages or other simple attribute functions. But when this customer talked about 625 parts per hour needing 100% inspection, Edmunds engineers listened to the charge, knowing manual gages would not fulfill the requirements.

A six station rotary transfer type automatic gage was designed that would accept this customer's parts from his conveying devices directly into the gaging machine. Parts were loaded into the dial, then transferred to 4 independent gage stations for measurement: (1) air-to-electronic gaging for tapered primer hole diameter at two elevations and taper angle variation; (2) profile feature for chamber bottom coplanarity; (3) clip groove size and relative location; (4) functional receiver gage for outer surface profile relative to firing chamber. An Edmunds CAG amplifier recorded measurement results from all 4 stations to provide overall part assessment before sorting into accept or reject exit tracks.