Kawasaki robots can be classified according to the drive method, and there is a great dedication to improving automation work. Its operation is reprogrammable, automatic, multi-purpose and capable of programming more than 3 axes. Let's take a look at its classification.
1. Classification and characteristics of electric drive of industrial manipulators
Electric drive is now the most used drive method for robotic arms, not only because there are many types of motors to choose from, but also because a variety of flexible control methods can be used. It is characterized by convenient power supply, fast response, large driving force (the stability of the joint type has reached 400 kg), convenient signal detection, transmission and processing, and the ability to choose a variety of flexible control schemes. The drive motor generally uses stepper motor, DC servo motor and AC servo motor (among which AC servo motor is the main drive form). Due to the high speed of the motor, the deceleration organization (such as harmonic transmission, RV cycloidal pinwheel transmission, gear transmission, spiral action and multi-rod organization, etc.) is generally selected. Nowadays, some manipulator arms have begun to use high-torque, low-speed motors without deceleration for direct drive (DD), which can not only simplify the organization, but also improve the control accuracy.
2. Pneumatic driven classification and characteristics of industrial manipulators
Industrial manipulators use compressed air to drive the actuation organization. The advantage of this driving method is that the air source is convenient, and its driving system is generally composed of cylinder, valve, air tank and air compressor, and its characteristics are convenient air source, rapid action, simple structure, low cost, and convenient repair. The disadvantage is that the air is compressible, which makes the stability of the working speed poor, and it is difficult to control the speed. Because the air pressure is generally only about 60 MPa, this type of industrial manipulator is suitable for occasions with small gripping force requirements.
3. Classification and characteristics of industrial manipulator hydraulic drive
Compared to pneumatic drives, hydraulically driven industrial manipulators have a much greater gripping capacity of up to hundreds of kilograms. The hydraulic drive arm is generally composed of a hydraulic motor (various cylinders, oil motors), servo valves, oil pumps, oil tanks, etc., and the operation is carried out by the execution organization of the driving robotic arm. The hydraulic driven industrial manipulator is characterized by compact structure, stable action, impact resistance, oscillation resistance, and good explosion-proofness, but the hydraulic components require high production accuracy and sealing function, and should not be operated in high or low temperature occasions, otherwise oil leakage will pollute the environment.
Each classification of industrial manipulators has its common advantages, and enterprises can choose one of the driving methods according to their own conditions.
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