Hydraulic press uses PC-based controls
A new hydraulic press can produce complex parts better and less expensively than mechanical presses, but it needs sophisticated control algorithms. Best Press Corp.'s new powder-compacting press forms powders into complex-shaped molded parts with uniform density using hydraulics control technologies from Delta Computer Systems Inc.
A new hydraulic press can produce complex parts better and less expensively than mechanical presses, but it needs sophisticated control algorithms. Best Press Corp.'s new powder-compacting press forms powders into complex-shaped molded parts with uniform density using hydraulics control technologies from Delta Computer Systems Inc. (Vancouver, Wa.) and Tri-Tech Engineering (Saginaw, Mich.).
Besides a multi-axis motion controller that directs its cylinders and pistons, the new press' hydraulics are controlled by two of Delta's RMC-100 series motion controllers that communicate with a PC running Steeplechase Software's (Ann Arbor, Mich.) Visual Logic Controller software via a Profibus fieldbus network.
Best Press reports the most innovative aspect of the new press' control system is its control algorithm, which provides a smooth transition from controlling the hydraulics based on position sensing to control based on pressure sensing. Transitioning gradually from position to pressure-based control and actively modulating the hydraulics using proportional servo valves to add or decrease pressure in minute amounts through a process called 'dithering' allows Best Press to create a uniform molded product that achieves tighter tolerances than systems using discrete control.
For more information, visit www.controleng.com/freeinfo .
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Annual Salary Survey
Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.
There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.
But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.
Read more: 2015 Salary Survey