Patent ID: 7821417
Filing Date: 2010-10-26
Classification: B23K,B25B

Abstract:
1. A system for detecting the presence of one or more parts in an assembly fixture, comprising: an assembly fixture including at least one cavity to receive and retain parts to be assembled, each of the at least one cavities being complementary in shape to the respective parts they are to receive; a pneumatic circuit connecting the interior of said at least one cavity to an pneumatic inlet; a source of pressurized air; and a switch assembly through which pressurized air from the source passes before entering the pneumatic circuit, the switch assembly having a signal member moveable from a first position to a second position when air flows through the switch assembly when a part is not loaded in, or is incorrectly loaded in, a respective cavity and the switch assembly including a sensor to indicate the presence of the signal member in the second position, wherein a shape of the part to be assembled conforms to the shape of the cavity when correctly loaded in the cavity to restrict a flow of air through the interior of the cavity.