This device is used for pressing and fixing with screws the protection case for auto gearbox. it is composed of 2 parts: a press for bolts and a stand for screwing the lid on top of the main part. The device has a pneumatic press and a electric screw-driver. Everything is managed by a Siemens PLC. The security is assured by a double-channel relay and a magnetic switch. The order for screwing, the torque and the angle is verified all the time by PLC and by screwing manager. It is impossible to deviate form the correct order of the cycle ( screw size, torque, no. of screws, etc.).