The Design and Construction of a Cannon Breech Mechanism Testing Machine

摘要

In order to test breech mechanisms of major caliber guns for material and functional defects, a Cannon Breech Mechanism Testing Machine was designed and constructed at Watervliet Arsenal. This equipment permits rapid testing at the manufacturing facility and supplements proof testing. Prior to its design and manufacture, 100% proof testing was required. However, with the availability of this testing machine and the application of a proof sampling plan, proof testing of breech mechanisms can be substantially reduced with accompanying lower inspection costs. The machine is an electronically controlled, pneumatically powered fail-safe testing unit. It can simulate actual gun firing pressures of up to 75,000 PSI. It can also be used for checking the obturator pad sealing in bag loaded type weapons. (Author)