Basic working principle of ultra fine pneumatic support for automotive fixture
The superfine pneumatic support is assembled with a miniature DC motor and a reducer in a shaft type combination. The reducer output shaft head is equipped with a screw head. When working, the motor drives the reducer to rotate so as to drive the screw head to rotate. The screw head drives the nut to move up and down according to the guide rod, and the upper end of the nut is equipped with a contact switch head. The gap between the contact switch and the support rod is more than 0.1mm supported by the spring strut. When the support head at the upper end of the support rod contacts the workpiece during operation, the support rod stops moving upward, and the nut drives the contact switch head to continue to rise until the contact and the support rod are eliminated, the contact switch head contacts the support rod, the circuit is connected, and the motor is powered off, When working, the workpiece transmits the force to the support rod, a contact switch contact, a nut and a thread head, a reducer support, a base and a workbench. Once the support work is completed, when the workpiece is processed, the micro DC motor reverses after the workpiece is lowered, and the support rod returns to its original position, that is, a work cycle is completed. The support is equipped with mechanical and electrical dual maintenance, first electrical maintenance. When electrical maintenance fails, the mechanical maintenance work is installed between the screw head and the reducer by the friction clutch, and electrical maintenance is installed by the travel switch.