Power Clamping - Jergens & Acme - #33

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POWER CLAMPING 3 www.jergensinc.com Phone 800-537-4367 or +1 216-486-5540 • Fax: +1 216-481-6193 • E-mail: info@jergensinc.com • www.jergensinc.com 3.33 Once clamped, you can: • disconnect your hydraulic power source • move the fixture, with the part still clamped, to other machines • not worry about your part unclamping due to hydraulic power failure, a cut line, or leaks in the hydraulic system Patented positive mechanical lock minimizes: • reclamping • set-up costs • parts accidentally becoming unclamped Jergens StayLock Clamps can provide solutions to many clamping problems. They are designed for use on: • palletized fixtures • transfer machines • machining centers • any power clamping application • quick change on molds and dies Use the StayLock Clamps with Jergens Air-Operated Hydraulic Pumps (described on page 3.51-3.52). One Hydraulic Pump can service several machines because there is no need to maintain hydraulic pressure when clamping StayLock Clamps. Once StayLock Clamps are in a clamping position, the hydraulic hoses can be disconnected, and the part will remain clamped indefinitely. Once the machining cycle is completed, applying hydraulic pressure to the release port unclamps the part. Positive Mechanical Lock Jergens StayLock Clamps offer a breakthrough in clamping flexibility! These mechanically locked clamps are activated and released by hydraulic pressure. Once activated, the clamps automatically lock and will not release until hydraulic pressure is applied to the release port. Most Commonly Asked Questions Q. Does the StayLock Clamp lose pressure? A. No, it does not. Because of a patented mechanical lock, a positive locking wedge is activated when pressure is applied to the clamp port. There is no need to maintain hydraulic pressure; therefore, the power source can be disconnected. There is no pressure to lose. Q. How do I lock StayLock Clamps in place? A. Applying hydraulic pressure to the clamp port of a StayLock Clamp drives two internal wedges together. The two wedges form a mechanical lock and will not retract until hydraulic pressure is applied to the release port. Q. Can these clamps be used with air? A. No. Air pressure does not apply enough force to lock or unlock the internal wedge mechanism. Q. How much hydraulic pressure is needed to activate the clamps? A. The minimum pressure required on most of the StayLock Clamps is 500 psi. The minimum and maximum pressure requirements are specified for each clamp on the following pages. Q. What is needed to set up a hydraulic system using StayLock Clamps? A. Typically, a system includes several clamps (depending on individual requirements); a power source; a four-way, three-position, zero-leakage control valve (see page 3.54); and hydraulic hose and fittings. There is no need for an accumulator in the system. Q. Can an air/oil booster be used with StayLock Clamps? A. No. Boosters typically are used with standard hydraulic clamps because pressure is needed to activate and maintain the clamp in the clamping position. With a Booster set-up, there is only one hydraulic line that provides the pressure needed. StayLock Clamps need pressure to clamp and unclamp; therefore, a Booster would not provide the needed pressure to the release port to unclamp the part. Q. Can I get technical assistance from Jergens when designing a StayLock Clamping system? A. Yes. Jergens will assist you by providing a CAD schematic drawing of your system, including all of the part numbers needed to order the system. For assistance, call 1-800-JERGENS (537-4367). CUT AWAY VIEW OF TYPICAL STAY LOCK CLAMP PISTON PISTON PLUG PISTON PLUG BODY LOCKING ANGLE LOCKING PIN Staylock Clamps