Pneumatic tools primarily convert the rotary motion output from a motor. In the automotive manufacturing industry, due to the prevalence of threaded connections, most motion is rotary, although linear reciprocating motion also exists. For different types of pneumatic tools, the conversion mechanism mainly includes mechanical clutches and planetary gear sets, friction plate clutches and planetary gear sets, hydraulic cylinders, torsion bars and hammer blocks, etc. All the above components are crucial parts based on rotary motion, determining important parameters such as torque, speed, and tightening accuracy of the pneumatic tightening tool. Due to its constant engagement, disengagement, pressure, and torque changes, its components are susceptible to damage.
1. Can be used in explosive, corrosive, high-temperature, and humid working environments;
2. Can be overloaded without burning out the motor;
3. Simple structure, robust and durable, relatively easy to maintain;
4. High output torque, lightweight, and high efficiency;
5. Can achieve stepless speed regulation and generate rotary, reciprocating, and impact motions;
6. Low working pressure, typically ~MPa, low gas viscosity, low pipeline resistance loss, facilitating centralized air supply and medium-distance transportation.
These advantages have led to their widespread application in many fields such as modern machinery manufacturing, shipbuilding, and automobile manufacturing. Especially in the automobile manufacturing industry, pneumatic tools are widely used in grinding, polishing, painting, and assembly processes during vehicle production. They are an indispensable tooling equipment in modern mass production of automobiles. Since nearly 90% of the connections in vehicle assembly in the automobile manufacturing industry are threaded connections, pneumatic tightening tools are particularly widely used in vehicle assembly.