An added complication in these situations is that the positioner
controls a volume booster that results in a much higher air capacity than the positioner
and this can lead to an overshoot on responding to small signal changes.
Three virtual prototypes of (industrial) small scale robotic arc welding cells including above mentioned positioners
having 2 workstations with 1/2/3 NC axes are shown in Fig.
However, the positioners
used to manipulate the weldments were still functional and capable of supporting and handling the weight and movement of the welded parts.
inside the cylinder provide ram position readings, reducing wear on the hydraulic system
This company has expanded its range of series 500 dia-Pump metering pumps with explosion-proof motors and NEMA 7 stroke positioners
for use in hazardous environments.
The success of new valve positioners
made from plastic rather than metal or cast aluminum rests on Amodel polyphthalamide (PPA), an engineering polymer produced by Solvay Advanced Polymers.
Replacement parts, belt trainers, positioners
and belt plows also are detailed.
Applications for the RV-C include rotary tables, wrist axes and welding positioners
It offers flexible control of up to eight web-guiding frames, sensor positioners
, or oscillating frames on cast-film lines.
Onmark's new equipment consists of a Fanuc 120iC/10L robot, Lincoln Powerwave 455 power supply, Fanuc Servo Torch, and two rotary positioners
that provide simultaneous motion with the robot.
Series 3731 explosion-proof valve positioners
from Samson Controls are designed for process control applications which demand the highest levels of safety and reliability.
However, as a result the air output capacity required to achieve fast positioning in larger actuators (with diaphragm areas of 1400 sq cm up to 2800 sq cm) is simply too much for normal positioners
and so accuracy can be compromised.
Over the past 13 years, CPSC and the FDA have received 12 reports of infants between the ages of 1 month and 4 months who died when they suffocated in sleep positioners
or became trapped and suffocated between a sleep positioner
and the side of a crib or bassinet.
Company's YT series of electro-pneumatic positioners
is engineered for harsh environments.
four part positioners
used for orienting the parts to be processed by the robot, two types of positioners
being included in the cell structure (2 with one degree of freedom and 2 with two degrees of freedom for part orienting) each positioner
having two workstations in order to reduce auxiliary part setting time;