Schunk introduces a new range of mechatronic grippers
With the multi-tooth guided SCHUNK EGN and EZN mechatronic grippers, SCHUNK transfers the unique features of the original pneumatic SCHUNK PGN-plus and PZN-plus universal grippers to the world of mechatronic based gripping. The electrically driven and energy-efficient SCHUNK EGN and EZN 2-finger parallel or 3-finger centric grippers combine the range of options and robustness of their pneumatic model with the variability, intelligence, and sensitivity of mechatronic gripping modules. The most unique exterior feature is the SCHUNK patented, multi-tooth guidance, which minimizes wear and guide play, and ensures high stability and loading capacity of the guideways. Brushless servo motor is used as a drive, and its rotation is translated into a stroke movement through a spindle nut. A resolver, which is directly connected to the motor, continuously queries the position of the servo motor, and allows exact positioning of the gripper fingers. Control is carried out by a SCHUNK ECM controller, which is equipped with standard plug connector technology by Profibus or CAN bus. It allows simple commissioning and parametrization by a PC and rotary encoding switch. Finger position, gripping force, acceleration, and speed can be regulated and controlled during the ongoing handling process. Since the gripper fingers can be pre-positioned, short cycle times can be shortened or the impulse force during the gripping process can be reduced. Combined with the SCHUNK FMS force measuring system, sensitive parts can be gently handled.
A vast option program transforms the 24-V-DC modules into a multi-functional unit, which can be also used in demanding environments. This includes the direct attachable protection protection cover which guards against fluids and dust, compensation units for compensating angle errors, force-measuring jaws, and jaw quick-change systems. For tool-free wiring with the controller, pre-assembled drag or robot cable sets in various lengths up to 20 m are available. A DNC coating ensures optimal conductivity, and reliable protection of the electronic components. With standard threads for protective conductors, personal safety is ensured. Combined with the SCHUNK ECM controller, and the SCHUNK ECS safety module, the EGN and EZN transform to a certified safety gripping system according to DIN EN ISO 13849 without any conversion. Equipped with the functions SLS, SOS, and STO they meet performance level d and SIL 3, providing safe human-machine collaboration in confined spaces. The mechatronic SCHUNK EGN 2-finger parallel gripper is available in three sizes with gripping forces of 400 N, 720 N, and 1,000 N, and a maximum stroke of 8 mm, 10 mm, and 16 mm. The SCHUNK EZN 3-finger centric gripper is offered in two sizes with gripping forces of 500 N and 800 N, and a maximum stroke of 6 mm or 10 mm.
Mechatronic universal gripper: A vast program of accessorires transforms the SCHUNK EGN and EZN to multi-purpose units for different environments and fields of application.
