MATERIALS: Bishop-Wisecarver Corp. announced the availability of the new HepcoMotion® PSD80 Profile Screw Driven Linear Actuator with high-efficiency Herculane® wheel technology. Designed to complement the established PSD120 ball screw actuator, PSD80 was primarily developed around the need for a cost-effective Z-axis solution in lighter load applications such as pick-and-place and assembly operations.
Housed on a high-strength aluminum beam and fitted with a stainless-steel sealing band, the PSD80 uses Herculane wheels mounted to an adjustable carriage, offering long life and no re-lubrication. Single or multiple carriages on a unit are possible and can handle loads to 500N. A stainless-steel lead screw provides actuation with pitch ranges of 4, 15, 25 and 70 mm. The 25 mm lead is particularly useful in Z-axis applications, while the 70 mm screw pitch satisfies the higher speed pick- and-place requirements and allows speeds up to 1 m/s and thrust loads to 300N. The lead screw is available in right- and left-handed threads and offers smooth, strong and precise actuation. A ball screw can be supplied for applications that require greater positioning accuracy.
PSD80 is supplied as a closed or open format dependent upon the application being subject to the ingress of dirt. The closed unit is rugged, tolerant of debris, and offers many mounting options while the open version is a lower cost solution that is compact, light and has low friction. Where two units are to be used in parallel, a “slave axis” without the driving screw can be specified for both closed and open units. Adding to its flexibility, the PSD80 is available in a completely corrosion-resistant version, as well as a double acting version for applications that require symmetrical movement from opposing carriages.
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
A recent example of a major CAE revamp is MSC Apex, released last month by MSC Software Corp. In a discussion with Design News, MSC executives noted that its next-generation platform is designed to substantially reduce CAE modeling and process time, “in some cases from weeks down to hours.”
The Thames Deckway would run for eight miles close to the river’s edge, rising and falling slightly with the tidal cycle. It will generate its own energy from a series of devices that will line the pathway and use a combination of sources to make the path self-sustaining.
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