What are the commonly used transmission modes in opto electromechanical equipment

Belt rotation, gear transmission, hydraulic transmission, sprocket transmission, magnetic transmission, induction transmission; Opto-mechanical is a big concept, and the specific machine and equipment are the above transmissions——— most important thing is that the methods of controlling these transmissions are different! Mechanical control, mechatronic control (automatic control, numerical control), in short, everything is the same.

Optical mechatronics technology is the intersection and integration of microelectronic technology, computer technology, control technology, optical technology and mechanical technology, and is the foundation of many high-tech industries and high-tech equipment. It includes two aspects of products and technology: optical mechatronics products are high-tech products integrating optics, machinery, microelectronics, automatic control and communication technology, with rich functions and high added value; Optical mechatronics technology refers to its technical principles and technologies that enable the realization, use and development of optical mechatronics products.

Optical mechatronics technology is a comprehensive high-tech composed of optics, optoelectronics, electronic information and machinery manufacturing and other related technologies, and is the foundation of many high-tech industries and high-tech equipment. It enriches and broadens the connotation and extension of optical mechatronics technology.

For the opto-mechanical park in Mawei: it is named after the opto-mechanical (or the name of the investor); Its internal enterprises are not necessarily engaged in optical mechatronics technology!

Commonly used mechanical transmission methods are: belt drive, gear drive, chain drive, worm drive, and screw drive.

Mechanical transmission is widely used in mechanical engineering, mainly referring to the transmission of power and motion by mechanical means. It is divided into two categories: one is to rely on the friction between the parts to transmit power and friction transmission, and the other is to rely on the meshing of the driving parts and the driven parts or the meshing of the middleware to transmit power or motion.

Belt drive is a transmission mode with intermediate flexible parts, which is widely used in mechanical transmission, especially the V-belt drive in belt transmission, which is widely used.

The gear transmission is composed of two gear transmissions installed on the driving shaft and the driven shaft respectively. Gear transmission is one of the most widely used transmission forms.

The chain drive is composed of two gears with special tooth shapes and a closed chain, and the teeth of the driving connecting wheel meshed with the chain link of the chain to drive the driven sprocket transmission meshed with the chain.

Worm transmission, when a gear has one or several helical teeth, and meshes with a turbine (similar to a helical gear) to form a staggered shaft transmission, this transmission is called worm transmission. Worm gear and worm drive is used when the two shafts cross at 90 degrees, but are neither parallel nor intersecting with each other, usually in worm gear drive, the worm is the active part, and the worm gear is the passive part.

Screw transmission is the use of screw and nut composed of spiral pair to achieve transmission requirements, mainly used to change the rotary motion into linear motion, while transmitting motion and power.

Transmission mode: belt drive.

Chain drive, gear drive.

Worm drive. Threaded (screw) drive.

Rack and pinion drive.

Other transmission mechanisms: plane connecting rod mechanism, cam mechanism, clearance motion mechanism.

Features: Belt Drive:

1) Flat belt drive:

a) The structure is simple, the center distance of the transmission is large, and there is no vibration in the transmission.

b) The slip coefficient is large, and the transmission power is small.

2) V-belt drive:

a) The sliding coefficient is smaller than that of flat belt transmission, and the transmission power is large (multiple belts are combined), and there is no vibration during transmission.

b) The friction is larger, and the processing of the pulley is more difficult than that of the flat pulley.

When the V-belt is driven, because the diameter of each point on the belt section is different (d, d1, d2), the rotation speed of each point is different, and the belt itself is a whole, so the upper part and the lower part of the belt slip in opposite directions relative to the groove of the pulley, which produces large friction and is easy to generate heat due to friction.

Because the circumference of the V-belt is fixed as standard, the standard V-belt can not be used for the belt transmission of the non-standard center distance, and the "active V-belt" can be selected at this time, which has the same cross-section as the standard belt, but it is fastened with screws by small pieces of connectors, so the connectors can be arbitrarily increased or decreased according to the required length in use. This type of belt drive has less power than a standard V-belt of comparable size.

Chain drive: 1) It can ensure an accurate average gear ratio.

2) It can be used to transmit power and movement between two wheel axles with a large center distance.

3) The chain is easy to wear, and the chain pitch after wear is increased, and the chain is easy to fall off.

4) The speed of the chain drive is low, and there is noise during operation.

Gear transmission: 1) The movement speed of the transmission is faster than that of the sleeve chain, and the noise during operation is lower than that of the sleeve chain, which is the form of high-speed chain transmission.

2) The requirements for sprocket material and heat treatment are high, because the pressure and friction of the toothed chain on the circumferential surface of the sprocket are large, which is easy to cause wear.

Worm drive: 1) Since the worm is equivalent to a screw, when the lead angle of the worm is less than the friction angle, the worm drive belt is self-locking, then the turbine pair can only drive the turbine by the worm, and cannot drive the worm by the turbine.

2) The structure of the worm gear auxiliary drive is compact, and the overall size of the turbine box is small.

3) The worm gear pair transmission is stable and noiseless.

4) The worm gear auxiliary transmission is sliding friction, and the friction damage is greater in the transmission, so the transmission efficiency is low. When using self-locking worm drive, the efficiency is about 50%.

5) Because the movement speed between the worm and the worm gear teeth is large, and the friction is also large, in order to improve the life of the worm gear pair transmission, the general worm is made of steel, and the worm gear is made of wear-resistant materials such as bronze.

Threaded (screw) drive.

It is possible to convert a small turning moment into a large axial force.

It can achieve high transmission accuracy, and can be converted into a more accurate linear motion distance through the angle of rotation.

The threaded transmission works smoothly and is easy to self-locking.

The structure is simple and easy to manufacture.

The disadvantage is that the friction loss is large and the transmission efficiency is low.

1 Gearing.

Classification: plane gear transmission, space gear transmission.

Advantages: Suitable for a wide range of circumferential speeds and powers; The transmission ratio is accurate, stable and efficient; High working reliability and long life; It can realize the transmission between parallel shafts, arbitrary angle intersecting shafts and arbitrary angle intersecting shafts.

Disadvantages: High manufacturing and installation accuracy and high cost. It is not suitable for transmission between two shafts over long distances. The names of the basic dimensions of the involute standard gears are: tooth top round; tooth root round; indexing circle; Counting; pressure angle, etc.

2 Turbo rod drive.

It is suitable for movement and dynamics between two axes that are perpendicular in space and do not intersect.

Advantages: large transmission ratio; Compact size.

Disadvantages: large axial force, easy to heat, low efficiency; It can only be driven in one direction.

The main parameters of turbo turbo drive are: modulus; pressure angle; worm gear indexing circle; worm indexing circle; leads; number of worm gear teeth; number of worm heads; transmission ratio, etc.

3 belt drive.

Comprises driving wheel, driven wheel; Annular belt.

1) It is used in the case where the two axes are parallel and the direction of rotation is the same, which is called the concept of opening motion, center distance and wrapping angle.

2) The type of belt can be divided into three categories according to the cross-sectional shape: flat belt, V-belt and special belt.

3) The application focuses on: the calculation of the transmission ratio; Stress analysis calculations of belts; The allowable power of a single V-band.

Advantages: It is suitable for transmission with large center distance between two shafts; The belt has good flexibility, which can moderate the impact and absorb vibration; Slip in case of overload to prevent damage to other parts; The structure is simple and the cost is low.

Disadvantages: The outer dimensions of the transmission are large; Tensioning device is required; Due to slippage, a fixed transmission ratio cannot be guaranteed; The life of the belt is shorter; The transmission efficiency is low.

4 chain drive.

Including active chain, driven chain; Ring chain.

Compared with gear drive, the main features of chain drive are: lower requirements for manufacturing and installation accuracy; When the center distance is large, its transmission structure is simple; The instantaneous chain speed and instantaneous transmission ratio are not constants, and the transmission smoothness is poor.

5 gear trains. 1) Gear train is divided into two types: fixed shaft gear train and rotating gear train.

2) The ratio of the angular velocity (or rotational speed) of the input shaft to the output shaft in the gear train is called the transmission ratio of the gear train. It is equal to the ratio of the product of the number of teeth of all driven gears in each pair of meshing gears to the product of the number of teeth of all driving gears.

3) In the rotating gear train, the gear with a change in the axis position, that is, the gear that rotates both automatically and revolutionally, is called a planetary wheel, and the gear with a fixed axis position is called the center wheel or the sun gear.

4) The transmission ratio of the rotating gear train can not be directly calculated by the method of solving the transmission ratio of the fixed shaft gear train, and the principle of relative motion must be used to convert the rotating gear train into an imaginary fixed shaft gear train by the relative velocity method (or called the reverse method) for calculation. It is suitable for transmission between two shafts that are far apart; It can be used as a transmission to achieve variable speed transmission; Large transmission ratios can be obtained; Realize the synthesis and decomposition of motion.

There are belt drives, gear drives, and chain drives. It is used for chain drive and belt drive in the home.

There are chain drive, bearing drive, belt drive.

In mechanical and electrical products, the transmission mode is widely used, mainly gears, belts, several kinds, each with its own advantages.

The requirements of mechatronics system for mechanical transmission system are: accuracy; Stability; Rapid responsiveness; It should also meet the requirements of compactness, light weight, high speed, low shock vibration, low noise, and high reliability.

The types of commonly used mechanical drive systems include gear drive, worm gear drive, belt drive, chain drive, gear train, etc.

Mechanical transmission is widely used in mechanical engineering, and there are many forms, which can be divided into two categories: friction transmission that transmits power and motion by friction between parts, including belt transmission, rope transmission and friction wheel transmission. Friction transmission is easy to achieve stepless speed change, most of them can adapt to the transmission occasion with large shaft spacing, and overload slip can also play the role of buffering and protecting the transmission device, but this transmission can generally not be used in high-power occasions, and can not ensure the accurate transmission ratio.

Meshing transmission that relies on the meshing of the driving member and the follower or the meshing of the middleware to transmit power or motion, including gear transmission, chain transmission, spiral transmission and harmonic transmission. The meshing drive can be used in high-power occasions with accurate transmission ratios, but generally requires high manufacturing accuracy and installation accuracy.

Belt drive, gear drive, chain drive, shaft drive.

Supplement**Hydraulic transmission, the most used in work.

The most common: threaded drive, gear drive, belt drive.

Common: chain drive, worm gear drive.

Rare: connecting rod mechanism transmission, cam mechanism transmission.

It is recommended that you buy a copy of "Mechanical Design", which is very careful.

Gear drive, rack drive, worm gear and worm drive, belt drive, chain drive.

Gear drive, worm gear drive, belt drive, chain drive, gear train, etc.

Hydraulic transmission, coupling rotation, fluid coupling transmission.

Mechatronics.

The commonly used transmission mechanism of the equipment is: 1, synchronous belt. It is characterized by accurate transmission and a constant transmission ratio. The transmission is stable, with cushioning and vibration damping functions. Easy to maintain. 2. Ball screw.

Characteristics: small friction loss, high transmission efficiency, high-speed feed and micro-feed possible, high axial stiffness, non-self-locking, and reversibility of transmission.

Commonly used mechanical transmission: belt transmission,Synchronous belt drive, gear drive. Pros & Cons:

Friction transmission, driven by friction force, compact structure, easy to operate, low efficiency.

It can ensure that the instantaneous transmission ratio is constant, the stability is high, and the transmission movement is accurate and reliable.

A wide range of power and speed is transmitted.

Compact structure, reliable operation, can achieve large transmission ratios.

The transmission efficiency is high and the service life is long.

The manufacturing and installation requirements of gears are high, and they cannot be protected when overloaded.

The basic principle of belt drive.

The transmission belt is sleeved on the driving pulley 1 and the driven pulley 2, and a certain tensioning force is applied to the belt, and positive pressure can be generated between the contact surface of the belt and the pulley; When the driving wheel rotates, it relies on the friction between the belt and the pulley to drive the driven wheel to rotate. The basic principle of belt drive is to rely on the friction between the belt and pulley to transmit motion and power.

There is a gearing.

Advantages: the transmission ratio and power transmission are relatively stable, disadvantages: the transmission efficiency is low, and the transmission distance is relatively short pulley transmission.

Advantages: It can be driven over long distances.

Disadvantages: Unstable transmission ratio and power output.

Coupling drive.

Advantages: It has the above advantages at the same time.

Disadvantages: high manufacturing precision and high cost.

1. Ball screw transmission.

2. Rack and pinion transmission.

3. Belt drive.

The main working mode of the transmission parts is: vertical and horizontal linear motion, no matter which way the transmission parts are the same, the following are introduced

Before the use of the basic cylinder, cylinder transmission, these two forces are enough, but the control system is more complex and complex, maintenance is more troublesome, now tends to the electric cylinder, can be controlled by the drive system, high precision, fast speed, controllable adjustment, through the ball screw load is also very large, in general, can basically be competent.

3.The noise of the factory is basically because of the gas noise of the cylinder and oil cylinder, and the next stage is basically changed to a nut rotary ball screw to realize mechanical automation, which will be used in a large number of industrial equipment to replace labor and liberate labor.