What is the principle of front pneumatic chuck?

There are several types of front-mounted pneumatic chuck, but the general principle of high-speed precision claw type is that the chuck and the cylinder are integrated, and compressed air enters the one-way valve from the gas distribution ring through the air inlet of the cylinder and is injected into the inner cavity of the cylinder, pulling the piston to drive the jaw to clamp the workpiece. After clamping, the reversing valve is closed and is in a pressure relief state. The air pressure in the cylinder is sealed by one-way valve, and the sealing ring on the gas distribution ring is loosened and separated from the cylinder, so that the chuck runs at high speed when starting the machine tool. This kind of chuck can be used for pipe thread turning, welding and cutting equipment, and of course, some of it can also be used for working turntable. Because of its long stroke and wide application range. The front pneumatic chuck provided by Shanghai Sanliu Electromechanical Equipment Co., Ltd. has undergone strict heat treatment and precision grinding, and has good accuracy and service life. The maximum outside diameter of the chuck can reach 1000mm, and the through hole can reach 560 mm At present, 60%-70% of the high-end pneumatic chucks of domestic oil pipeline processing and welding equipment, including export machine tools, adopt their brands, install similar products and take them to the machine tool factory.