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2004 Mazda RX-8 -- Rumba with a rotary
Mazda's RX-8 is a sheer joy to drive in first and second gear. Mazda's RX-8 is a sheer joy to drive in first and second gear. Its 238-hp rotary engine has a lot of low-end torque that propels the car off the line like it was shot out of a cannon. I confess to zipping out my driveway and down our
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Pneumatic or servo?
approximately 30-lb continuous force to well over 4,000 lb. Linear-motor forces only range as high as 2,700 lb, but at significantly higher velocities. Rotary possibilities use carriage assemblies that contain small leadscrews with a rotary mount. When mated with NEMA-17 motors and indexers, these assemblies
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Pneumatics troubleshooting gets easier
to meaningful text messages. Each participant module is assigned an address, either automatically or set through a rotary hex switch, for communication with the bus module. The bus module, in turn, handles all communication over the fieldbus. This arrangement means the entire DDL chain has only one fieldbus
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Mechanical Switches
. Manual switches can have one or a combination of switching actions. In momentary-action switches, the operator pushes (pushbutton or toggle) or twists (rotary) the actuating device and contacts move to transfer the circuits to the second set of contacts. When the actuating force is removed
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Right-sizing pneumatic valves
Determining flow capacity is a critical factor in valve selection. Directional-control valves are common in pneumatic systems. They control compressed-air flow to cylinders, rotary actuators, grippers, and other mechanisms in packaging, handling, assembly, and countless other applications
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Mix & match for theperfect switch panel
such as pushbutton, rotary, sliding-type encoders, and directional switches. These get connected using wire harnesses, solder, or conductive adhesives. The connections, however, often break down from normal wear and tear. A new switch assembly technique promises to eliminate these interconnect woes
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"Designer" seals keep switches clean
or other mechanical activation. They serve in everything from carpet-cleaning machines and computer peripherals to the Space Shuttle. Interactive dynamic seals protect electromechanical switches, rotary controls, and circuit breakers from harsh environments while leaving them accessible for manual
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Application Note: Sensors and Switches Used in Valve Actuators and Valve Positioners (.pdf)
A valve actuator is a pneumatic or electric mechanism used in process control systems to automatically open or close valves. Potential Applications: Valve actuators can be used with either linear or rotary valves in industrial, medical, food and beverage, and transportation applications.