EZU
Function
Sectional diagram
Sectional diagram
The brushless DC servomotor drives the three gear racks integrated in the slide-guided base jaws via a spur gear unit with rack-and-pinion principle. The spur gear unit reliably generates the gripping force, which remains constant even in the event of horizontal positioning errors of the workpiece or robot, thereby ensuring reliable centering of the workpiece as well as a high fault tolerance. The gripping force is generated without a minimum approach distance, which simplifies handling and speeds up the process.
An integrated absolute encoder ensures that the gripper is immediately ready for use even after an emergency stop or power failure. The gripping force maintenance, which is achieved in combination with a permanent magnet brake and a damping element in the drive train, reduces the risk of workpiece loss, which is detected by the integrated workpiece loss detection.
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Sturdy and resistant T-slot guidance
for large finger lengths, external forces and moments. Optionally available as dust-tight version. - 2
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Fully integrated and sealed control and power electronics
with status LEDs and M12 plug connectors for connecting the voltage supply and communication. - 3
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High-resolution, output-side absolute encoder
for precise positioning of the gripper jaws with permanent absolute position feedback. - 4
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Sealed drive train with spur gear and pinion/rack principle
enables reliable generation of the gripping force without a minimum approach distance. - 5
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Brushless flat motor
for limited space and high torques due to external rotor. - 6
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Electromagnetic brake
with additional mechanism for maintaining gripping force and position during standstill or power failure.
Commissioning app in the SCHUNK control center
Increased protection class with dust-tight version SD
Mounting option for additional attachment
Connectivity
Gripping modes
Software Service - Robot integration
Software Service - PLC integration
Commissioning app in the SCHUNK control center
The mechatronic grippers app simplifies commissioning, operation, diagnostics and service thanks to an extensive catalog of functions Users can control the gripper directly and perform application validation without the need for a PLC. The functions include network configuration, firmware updates, parameter adjustments and backups as well as comprehensive diagnostic options. The app is compatible with Windows and can be downloaded at schunk.com/downloads-software.
Increased protection class with dust-tight version SD
The dust-tight version increases the degree of protection against dust and liquids entering the guidance and base jaw. In combination with the sealed electronics (IP67), the dust-tight version is thus suitable for use in particularly harsh ambient conditions, such as for loading a grinding machine. The achieved protection of the guidance corresponds to the IP64 protection class and is thus absolutely dust-tight and protected against splashing water from all directions. You can find additional information on the product in the operating manual.
Mounting option for additional attachment
Additional threads and fittings are located in the guidance housing for mounting an application-specific design in order to implement additional functions. For example, a spring-loaded pressure element can be fitted for spring-supported positioning of the workpiece against a stop.
Connectivity
A wide range of available communication interfaces simplifies handling with a wide variety of control and robot manufacturers and ensures time savings during integration. Industrial Ethernet (PROFINET, EtherCAT, EtherNet/IP) enables direct integration without additional gateways into the control environment of leading PLC manufacturers on the market. With the Modbus RTU serial interface, the gripper can be connected to the tool flange of leading robot manufacturers without external cable routing. IO-Link is independent and offers flexibility in connecting to other networks.
Gripping modes
The BasicGrip and StrongGrip gripping modes are available.
BasicGrip: The gripping speed is automatically optimized for gripping force adjustment, permanent re-gripping is possible
StrongGrip: Maximum gripping force is generated and then stored by the gripping force maintenance, permanent re-gripping is possible within an adjustable time window, pause times between gripping cycles must be taken into account
Software Service - Robot integration
For seamless interaction between gripper and robot, software modules for integration into the robot control system of leading manufacturers are available. This means that the gripper's range of functions can be used directly without any additional programming effort and programming of the application can be started immediately.
Robot compatibility: Universal Robots e-Series via Modbus RTU, FANUC CRX via Modbus RTU, ABB OmniCore C30 via EtherNet/IP, YASKAWA YRC1000micro via EtherNet/IP, Kassow Robots via Modbus RTU.
Software and other compatibility notes can be downloaded at schunk.com/egu-software.
Software Service - PLC integration
For seamless interaction between gripper and PLC control, function modules for the programming interface of leading manufacturers is available. This means that the gripper's range of functions can be used directly without any additional programming effort and programming of the application can be started immediately.
PLC compatibility: Siemens TIA Portal (PROFINET and IO-Link), Beckhoff TwinCAT (EtherCAT and IO-Link), Allen Bradley Studio 5000 Logix Designer (EtherNet/IP and IO-Link), Bosch Rexroth ctrlX (EtherCAT, only with Bosch Nexeed Automation).
Software and other compatibility notes can be downloaded at schunk.com/egu-software.
Application example
Application example
Flexible, cycle-time optimized loading and unloading of a machine tool. By using two grippers on the robot, the machine tool can be automatically loaded in a way that is optimized in terms of cycle time, meaning that productivity can be increased. Finished part and pre-machined part can be transported in one loading cycle. Due to the large and freely programmable jaw stroke of the gripper, different diameters can be gripped without having to change the gripper.
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EZU double gripper for handling raw and finished parts
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Machine tool with ROTA THW3 power lathe chuck