Cylinder Cushions Adapt on the Fly  

Oleh:

Korane, Kenneth J.

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 81 no. 22 (Nov. 2009), page 39.
Topik: Festo Corp.; Self-adjusting Pneumatic Cushions; DSNU Series round-cylinder Pneumatic Actuators

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Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44.61 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Festo Corp., Hauppauge, N.Y., has developed a self-adjusting pneumatic-cushioning system for the its widely used DSNU Series round-cylinder pneumatic actuators. The cushion relies on specially engineered air channels to vent the cushioning air, letting the cushions adapt their characteristics should cylinder loads and speeds change. The cushion, designated PPS, provides dynamic but gentle damping as the load nears the end of the cylinder without the need for manual adjustment. Until now, users had to manually adjust end-position cushioning on cylinders. However, tuning by hand often means actuators are less than perfectly adjusted. Underdamping results in excessive impacts, more noise, and increased wear; overdamping risks slow cycle times. The self-adjusting PPS cushions provide just the right damping even if parameters such as friction and pressure change, says Festo. They also reduce acceleration forces on mating components and workpieces. This cuts down wear and minimizes shock and vibration. And compared to shock absorbers, self-adjusting cushions are less expensive and more durable, according to the company.

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