Brief analysis of linear transmission system of in

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A brief analysis of the linear transmission system of industrial robots

(with strong anti-interference ability article source: Robert Institute of robotics, China Science and Technology)

the rapid development of the industrial robot market in recent years has brought China's motion control industry into a stage of rapid development. The further release of downstream demand also drives the high-speed development of the upstream. Orders for core transmission components such as linear guide rail, ball screw, gear rack, hydraulic (pneumatic) cylinder, gear, reducer and so on also show a significant growth trend, and the entire operation control industry market presents a continuous growth posture. The linear transmission mechanism commonly used in industrial robots can be directly generated by cylinder or hydraulic cylinder and piston, or it can also be obtained by rotating transmission components such as gear rack, ball screw nut, etc

move the joint rail. Moving the joint guide rail during the movement can ensure the position accuracy and guidance. There are five kinds of moving joint guide rails: ordinary sliding guide rail, hydraulic dynamic pressure sliding guide rail, hydraulic static pressure sliding guide rail, air flotation guide rail and rolling guide rail. Rack and pinion unit. In the gear tooth strip device, if the rack is fixed, when the gear rotates, the gear shaft communicates with the carriage to make a linear movement along the direction of the rack. In this way, the rotating motion of the gear is converted into the linear motion of the carriage. The carriage is supported by a guide rod or a guide rail, and the return difference of the device is large

ball screw and nut. Ball screw is often used in industrial robots. The friction of ball screw is very small and the motion response speed is fast. At the same time, the crawling phenomenon during low-speed movement can be eliminated. During assembly, the use of plastic shopping bags in supermarkets and shopping malls is generally reduced by more than 2/3, and a certain pre tightening force can be added to eliminate the backlash

hydraulic (pneumatic) cylinder. The hydraulic (pneumatic) cylinder is an executive element that converts the pressure energy output by the hydraulic pump (air compressor) into mechanical energy and performs linear reciprocating operation in the good development of the plastic market. The linear movement can be easily realized by using the hydraulic (pneumatic) cylinder. The hydraulic (pneumatic) pressure cylinder is mainly composed of cylinder barrel, cylinder head, piston, piston rod, sealing device and other components. The piston and cylinder barrel adopt precise sliding fit. The pressure oil (compressed air) enters from one end of the hydraulic (pneumatic) pressure cylinder, pushing the piston to the other end of the hydraulic (pneumatic) pressure cylinder, so as to realize linear movement. The movement direction and speed of the hydraulic (pneumatic) cylinder can be controlled by adjusting the flow direction and flow rate of the hydraulic oil (compressed air) entering the hydraulic (pneumatic) cylinder


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