Abstract: A crank press includes an encoder measuring an angle value of a servo motor, a strain detector module generating a converted load value associated with deformation of a machine body, a memory storing at least one relation between an angle value and each of an upper torsion limit and an upper load limit, and a controller calculating a torque command value based on a position command, reading the upper torsion limit corresponding to the measured angle value, determining whether the torque command value exceeds the upper torsion limit, outputting the torque command value when negative, and outputting the upper torsion limit when affirmative. The controller further stops the servo motor when the converted load value exceeds the upper load limit corresponding to the measured angle value.

Abstract: A crank press includes an encoder measuring an angle value of a servo motor, a strain detector module generating a converted load value associated with deformation of a machine body, a memory storing at least one relation between an angle value and each of an upper torsion limit and an upper load limit, and a controller calculating a torque command value based on a position command, reading the upper torsion limit corresponding to the measured angle value, determining whether the torque command value exceeds the upper torsion limit, outputting the torque command value when negative, and outputting the upper torsion limit when affirmative. The controller further stops the servo motor when the converted load value exceeds the upper load limit corresponding to the measured angle value.

Abstract: A port replicator having display function includes a signal transmission device located in a case which has a housing compartment and an opening on one side, and a display device having a display panel and connecting electrically to the signal transmission device to display signals received by the signal transmission device. The case has a latch tenon structure to prevent a portable electronic device coupled with the signal transmission device from slipping out of the case.

Abstract: A sound-absorbing composite material includes a super thin fiber layer, and a non-woven fiber layer laminating the super thin fiber layer. Thus, the super thin fiber layer co-operates with the non-woven fiber layer to provide a better sound-absorbing effect, thereby enhancing the sound-absorbing effect of the sound-absorbing composite material. In addition, the super thin fiber layer is rested on and attached to the non-woven fiber layer which provides support to the super thin fiber layer to enhance the strength of the super thin fiber layer, so that the super thin fiber layer is not easily worn out when in use, thereby enhancing the lifetime of the sound-absorbing composite material.