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Industrial Hydraulics
TECHNOLOGY UPDATES
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Teaching an old machine new tricks
When a number of blow-molding manufacturers noticed trouble with thin-film winders at the end of molding lines – they were unacceptably slow responding to feedback from load cells, leading to wasted material – it looked like costly replacement would be necessary. The winders were up to 20 years old – ancient by today’s production standards.
But machine builder Davis-Standard LLC thought of an approach that could reinvigorate these old machines: retrofit them with the new Bosch HACD digital controller, which communicates easily with different machine controllers, including interfacing with analog signals.
The whole story
More on speed/productivity, and uptime.
For hydraulics, water is hot
Water-based hydraulic systems have a number of advantages over traditional hydraulics: fire resistance, cost savings, and easier cleanup. According to this recent Hydraulics and Pneumatics article, they’re also more sustainable – unlike oil, water containing synthetic additives can safely be dumped into plant effluent systems. These advantages, plus soaring energy costs and increasing environmental concerns, have made water “hot” as a potential choice for hydraulic system designers. This article explains several major differences between oil-based and water-based hydraulic systems, to help avoid potential problems and achieve the greatest efficiency in each application.
The Bosch Rexroth View: Sustainable technology is becoming a priority in the world of hydraulics, and for Bosch Rexroth as well. Not only do concepts like water-based hydraulics save energy and reduce environmental impact, but they can also offer key benefits for the customer’s bottom line.
The whole story
More on speed/productivity, and uptime.
Stop the presses – safely
When considering the advantages of hydroforming processes (e.g., more efficient use of material, greater flexibility, better mechanical stability), designers also need to consider numerous safety standards designed for safe press control. Safety requirements in the U.S., Canada, and Europe are designed to establish a level of security for hydraulic controls, and ensure that a component failure does not cause unsafe stoppage of a press. This Plant Engineering article, by Bosch Rexroth Hydraulics Senior Application Engineer Johannes Schunder, provides a look at safety requirements along with examples of safe hydraulic control circuits.
The whole story
More on uptime.
Hydraulic pulse tools are at hand
Thanks to technological advances, designers of hand-held pulse tools can now use hydraulics to provide fastening accuracy at the level of DC electric or pneumatic tools. This feature story from Assembly Magazine describes how an innovative two-part hydraulic mechanism has opened up new potential for light but powerful, low-maintenance, and ergonomic pulse tools in assembly applications.
The Bosch Rexroth View: This is a good example of how hydraulics has come to be recognized as a viable option in an increasingly broad range of applications. Innovative design and electrohydraulic controls can add a high level of precision to well-known hydraulics advantages such as power and torque.
The whole story
More on speed/productivity, and precision.
The circle: shaping machine tool design
BTB Transfer s.r.l. is a leading Italian machine tool builder, offering top-of-the-line multi-spindle rotary trunnion machine tools. According to this article in a recent edition of Fluid Power Journal, they recently introduced a new series of machines with improved precision and dynamics, improvements that were enabled through an innovative electrohydraulic controller solution that incorporates Bosch Rexroth’s IAC-R digital hydraulic control valves.
The whole story (PDF - 346 KB)
More on speed/productivity, precision, and time to market.
More choices through closed-loop control
Today’s hydraulics offers much more than just raw power for moving, lifting, or crushing. Thanks to closed-loop electrohydraulic motion control, a spectrum of hydraulic products is now available that provides impressive precision and/or supports highly complex multi-axis applications. This Design Line article presents a guide to selecting the right controller for each application, based on four key decision criteria for machine developers to consider.
The whole story
More on precision, and time to market.
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