Lead screws translate rotary to linear motion, but require other components such as linear rails to support and guide the moving load. Moreover, such systems may require bellows to protect the screw and rail from debris in harsh environments.
To prevent binding and maintain smooth operation, alignment between the screw and rails is critical. By reducing the number of components and time-consuming alignment procedures, a co-axial screw-rail design saves space and cuts cost. And because the rail shields the screw, the design may eliminate the need for protective bellows.
The patent-pending design uses a proprietary coating on the carbon-steel rail to improve toughness and corrosion resistance. And TFE coating on the 303 stainless-steel screw and the rail smoothes operation. Nuts use a reinforcement and lubrication package compounded right into the polyacetal material. Available in 1-, 3¼4-, and 1¼2-inch outside-diameter rail sizes, the screw rail can be used for grippers, conveyor-width adjustment, medical and fluid dispensing equipment, and robotic position systems.
Dave Arguin Kerk Motion Products One Kerk Drive Hollis, NH 03049 (603) 465-7227.
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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