Abstract: A CAD system and method for designing sheet metal parts. A proposed design is automatically tested against a set of design rules. Available tools are selected according to criteria computed with reference to the part to the fabricated and then are tested to determine whether they can be used to make desired bends. A fabrication sequence is computed.

Abstract: A system which includes not only a microprocessor (or microcontroller), but also an auxiliary chip which monitors the system power supply voltage and performs related functions for the microprocessor, and also provides a watchdog function to monitor the microprocessor's activity. The auxiliary chip uses only two pins for the three functions of:active-high-reset out,active-low-reset out, andpushbutton reset input.

Abstract: A multi-purpose probe module 82, comprising both a touch-trigger type contact probe 84 and a non-contact type probe 86, is used in method and apparatus for monitoring and adjusting the accuracy of a computer-controlled machine for manufacturing precision bevel and hypoid gears. The probe module is mounted on the machine's tool support and is used in conjunction with locating points positioned on the machine's work support to monitor and recalibrate the relative positions of the tool and work supports. The probe module is also used to monitor the flanks of the gear-shaped workpieces (a) for initial stock division, (b) for pre-machining accuracy, (c) for first-piece testing, (d) for in-process accuracy, and (e) for post-machining accuracy. The same probe module is used in combination with a sacrificial test wafer mounted on the work support for adjusting the position of the machine's cup-shaped grinding wheel following each dressing of the latter's working surfaces.