Members press release

Schunk, Germany - IFR Partner

SCHUNK Highlights at IMTS 2012 Show

June 2012

At the International Manufacturing Technology Show IMTS 2012, booth # W-2000, from 10 to 15 September 2012 in Chicago, SCHUNK will highlight the electrically driven small parts gripper EGP, the premium gripper range with multi-tooth guidance, and the 3-finger centric gripper PZN plus which is now available in a new size.

Schunk EGP gripperMechatronic Gripping Modules: Simpler, lighter and more flexible - EGP

The conversion from pneumatic to electric gripping modules has been made much simpler, thanks to the electrically driven small parts gripper EGP. Compared with other electrically driven small parts grippers on the market, it scores points with respect to its high speed and simultaneous high gripping force. A powerful roller guide ensures high efficiency and makes the gripper highly dynamic, especially for demanding Pick&Place applications.

Since the EGP is based on the time-tested pneumatic small parts gripper MPG-plus, it offers a bundle of additional advantages: For example, users can completely transfer the sensor system of the MPG-plus to the EGP and can quickly convert existing systems from pneumatics to electricity. Control of the gripping module is the same as for the MPG-plus - either directly (digitally) or by means of sensor distributors (open/closed).

Like the MPG-plus, the EGP also can be bolted through or bolted on either the side or bottom, for increased flexibility in designing the system. The lightweight construction in the design of the EGP is due to special high-grade aluminum which reduced excess material on the gripper housing and internal components. This enhances the dynamics and energy-efficiency of the system. Without the occurrence of significant interfering contours, two positions can be reliably monitored by means of an integrated and programmable magnetic switch, which shows whether the system is "open" or "closed".

The switch-off points can be programmed as well, which further increases the process stability. Reliable position monitoring and detection of different sized workpieces are possible even when using very short strokes. The first version is the EGP size 40. Weighing only 400 g, the gripper is designed for workpiece weights up to 675 g, can achieve a stroke of 6 mm per finger, and has a four-stage adjustable gripping force of 135 N with a closing time of <250 ms.

Gripping Modules with a Plus - SCHUNK Premium Gripper Range

Schunk PGN gripperSpreading the load across many shoulders - that is the principle behind the multi-tooth guidance developed by SCHUNK. The guidance tasks in parallel and centric grippers are not carried out using the classical T-slot but with a multiple prismatic guidance arranged in parallel. Therefore forces and moments are distributed across multiple guiding areas. As a result, the guidance has a higher load capacity. Longer Gripper fingers can be used, without overloading the guidance. The added guiding areas reduce the surface pressure, and therefore wear, to a minimum. The multi-tooth guidance ensures minimal guidance play throughout the gripper's service life.

For over a decade, SCHUNK has been setting benchmarks with the PGN-plus gripper that stands for efficiency and precision in handling. Utilizing the Multi-Tooth Guidance, the PGN-plus 2-finger parallel gripper, together with the PZN-plus 3-finger centric gripper, is undoubtedly the "best among its class" in the SCHUNK premium range of gripping modules.

To guarantee superior flexibility the premium gripper range covers a wide spectrum of applications. It includes the DPG-plus 2-finger and DPZ-plus 3-finger sealed version as well as the PGB-plus parallel and PZB-plus centric gripper with a  center bore. In addition, SCHUNK offers the PZV-plus 4-finger centric gripper.

3-Finger Centric Gripper PZN-plus 380 from SCHUNK

Schunk PZN gripperThe proven PZN-plus series has been extended with the new size 380 to cope with the constantly increasing performance requirements. This series can be used with the handling of weights of up to 190 kg (420 lbs), making it perfect for the handling of heavy workpieces.

The multi-tooth guidance of the PZN-plus 3-finger centric gripper employs a large gripping force and high moment load capabilities. A wide range of different versions allows for universal use in areas with special requirements (temperature, chemicals, dirt, and many others.) This unique range of different versions means that a suitable gripper is available for most every application.

The new size PZN-plus 380 now expands this 3-jaw centric gripper family to 11 distinct sizes and allowing for grip forces up to 59,500N (13,400 lbf) as well as a stroke of almost 2 inches per jaw. With the other options like metallic dust covers and viton seals, the PZN-plus family is the broadest 3-jaw gripper on the market. This unique range and versions show that the PZN-plus grippers are able to handle almost any conceivable application.