A transmission mechanism is a component or mechanism that transmits power from one part of a machine to another, thereby causing the machine or machine parts to move or operate.
1. Mechanical Transmission
01 Gear Transmission
Gear transmission is based on the principle of two or more gears meshing and rotating.
Advantages: Suitable for short-distance transmission. transmission ratio is accurate, stable and efficient. high working reliability and long life; transmission between parallel axes, intersecting axes at any angle and intersecting axes at any angle can be realized.
Disadvantages: requires high manufacturing and installation accuracy and high cost. is not suitable for transmission between two axes at long distances. has no overload protection function.
02 Chain Transmission
Chain transmission is based on the connection of chains and sprockets for rolling or sliding motion.
Advantages: The average transmission ratio of the chain drive is accurate. the transmission power is large and the overload capacity is strong. it can work in harsh environments such as high temperature, humidity, and dust.
Disadvantages: It can only be used for transmission between two parallel shafts. high cost, easy to wear, easy to stretch, poor transmission stability, and not suitable for use in rapid reverse transmission.
03 Belt Drives
Belt drives are based on the rolling or sliding motion of the belt.
Advantages: It is suitable for transmissions with a large center distance between two axes. The belt has good flexibility, which can alleviate impact and absorb vibration. it slips to prevent damage to other parts when overloaded. it has a simple structure and low cost.
Disadvantages: The outer size of the transmission is large. a tensioning device is required; a fixed transmission ratio cannot be guaranteed due to slippage. the belt life is short. the transmission efficiency is low.
04 Worm Gear Transmission
Worm gear transmission is based on the meshing relationship between a worm and a worm gear.
Advantages: large transmission ratio, compact structure and size. smooth transmission and high load-bearing capacity.
Disadvantages: large axial force, easy to generate heat, low efficiency, and can only drive in one direction.
05 Connecting Rod Transmission
Connecting rod transmission is composed of a number of components with certain relative motion using low-pair connections to achieve rotation, swing, movement and complex motion in a plane or space.
Advantages: simple shape and easy processing; rich connecting rod curves to meet different requirements.
Disadvantages: There are many components and kinematic pairs, and the movement accuracy is low. it is difficult to balance and is not suitable for high speeds. the design is complex and it is difficult to achieve precise trajectories.
06 Cam Drive
Cam transmission is based on the rotary motion or reciprocating motion of the cam to push the follower to make specified reciprocating movements or swings.
Advantages: simple structure, compact structure, convenient design. Can realize complex motion requirements.
Disadvantages: point and line contact are easy to wear; cam profile processing is difficult and expensive. The stroke is not large.
2. Fluid Transmission
01 Hydraulic Transmission
Hydraulic transmission is based on the pressure transmission of liquid in closed pipelines.
Advantages: It has a large moment-to-inertia ratio; speed, torque, and power can be adjusted steplessly; it is easy to cooperate with electrical control and connect to the CPU. It is easy to realize overload protection and pressure maintenance. The hydraulic technology has strong plasticity and variability, and can be increased Flexibility in flexible production.
Disadvantages: There is no precise transmission ratio; it is not suitable for long-distance transmission. There are certain difficulties in transmission under high and low temperature conditions. The manufacturing accuracy of components is high, and it is difficult to use and maintain. It is difficult to check when a fault occurs.
02 Pneumatic Transmission
Pneumatic transmission is based on the movement of compressed air.
Advantages: Using air as the working medium, it is easy to handle after use; convenient for centralized air supply and long-distance transportation; quick action and simple maintenance. superior control in harsh working environments such as flammability, radiation, vibration, etc.. low cost, automatic overload function Protect.
Disadvantages: The working speed stability is slightly poor. The noise is large. The pneumatic control system is not suitable for complex circuits with too many component levels.
3. Electric drive
Electric transmission is based on the process of converting electrical energy into mechanical energy.
Advantages: high accuracy, energy saving, precision control, improved environmental protection, noise reduction, and cost savings.
The transmission mechanism plays a key role in packaging equipment and has the advantages of high efficiency and high precision. The diversity of the mechanism makes its application in mechanical equipment more selective.
In the future, we can expect transmission mechanisms to become more intelligent, integrating sensors and automated control systems to achieve higher adaptability and contribute to the advancement and sustainability of mechanical engineering.
