Hello everyone, what I want to introduce today is about the identification of transmission pulleys. Do you have this problem in this regard ? Is it often difficult to distinguish pulleys and gears ? When we are communicating, you may want to say pulley or pulley. Sometimes, it is said that the name is misunderstood , and there is a discrepancy in the understanding of the name, which leads to some inconvenience in communication . If you are troubled in this regard, I will introduce to you later how to quickly distinguish which form of transmission wheel it is and what we see. In what situations is this kind of transmission wheel used? Here are a few examples to explain to you more clearly. How do we identify it? Let’s continue reading. First, let’s understand how to identify the pulley. Then Here, the most direct thing we can do is to check whether there is a belt medium in the middle when it is driving. Usually with a pulley, we can literally know that it must have a belt and a transmission pulley , so the transmission pulley belongs to the pulley. Or pulley, pulley, we all refer to the same parts. Here we look at the general ones. What we will see more often is that the first two types on the screen are multi-groove type or wide-angle type, V Types, etc., and even some are flat belts. What we see is this kind of pulley for transmission . The second one is a regular belt. At that time, the regular belt means that there will be teeth on the belt that match our pulleys. The difference between the two is that the multi-groove type is generally more prone to slipping. If you use a timing belt, the probability of slipping is relatively low. Sometimes you will see some slippage . When precision positioning, timing belts are used in many situations. This will be explained later in the sample application. We often confuse it with gears because its shape is also tooth by tooth, so it leads to saying Sometimes we even misunderstand this kind of parts. They are gears and timing belts. There are also many forms . Today, the main thing is to explain how to distinguish them quickly. There is no other discussion about the types. Let’s talk about them first. Understand how to quickly identify this type of transmission pulley. It is a pulley. Next, I will introduce an explanation of the pulley example. Before explaining, let’s first understand that our pulleys are often related to the motor belt . Be a medium of transmission , so we will see that pulleys often appear where there are motors and belts. This part usually rotates, and sometimes such structures even rotate at high speed . From the appearance, If you can't see it, you may not know that there are some structures inside which are pulleys, such as the engine of a car . If you open the hood, you will see that there are belts inside , or if a motorcycle has a handle. If you open the side cover, you may also see that there are belt transmissions inside , and some of them are chain sprockets. I will explain them to you later when they are explained . Let’s take a look at them first, so maybe Hidden inside, you can see from this place that this is the motor. This is the motor. You can see that the timing pulley just introduced has one tooth and one tooth. The timing belt is used for transmission . So when the motor rotates, it will drive this place. The front is It is a pneumatic clamp , so it will also rotate accordingly. After the workpiece is put up, it will rotate 90 degrees. Then, the motor drives the clamp and it will start to rotate . So this is where it is used for this object. The laser engraving appearance uses this structure so that this part can rotate slowly to carve out the appearance. Therefore, this part is used to use pulleys and belts to transfer this part of the details. It is left to you to discuss here . Let’s take a look at what kind of components we have around us . We use structures such as pulleys , belts, and motors to make an integrated small application . Next, we will introduce the quick identification of gears and the pulleys just introduced. There is a timing pulley that is very similar. So how do we distinguish it here ? Generally, when we see it transmitting, is it direct transmission between gears ? Because the transmission of gears is teeth to teeth and racks. Or parts and parts such as worms and worm gears , the teeth collide with each other and work together to transmit . Usually in this regard, if it is directly transmitted, it belongs to the type of gear . If it is like the one just introduced, there is another one in the middle. When the belt is used for transmission, it is a pulley. So in this regard, we can know from its transmission process whether it is a gear or a timing pulley . Of course, it can also be seen from the appearance. , as can be seen from spur gears, like the timing belt we just introduced, we usually see that there are relatively high places on both sides of the timing pulley. This is to prevent the belt from getting out of the groove when it is passed. This is usually done. If the two higher classes do not have this class, they just have intermediate teeth. Generally , they are gears. Of course, we still have to distinguish the external gears. Generally, we can see from this place that spur gears , helical gears, herringbone gears, and bevel gears Gears , etc. can be seen from their appearance. If you are interested in the types of gears, you can go to the description at the bottom of the video . There will be a more in-depth discussion on understanding the types of gears, so that everyone can learn more. Where are good general gears often used? In fact, the use of gears is related to the use of gearboxes. A lot of gearboxes usually have a shell that is combined with the motor, such as some gears , planetary gears , some are spur gears , and some may even be bevel gears, etc. If it is inside a speed reducer. , or gear box, it is often difficult for us to see the structure of the gear . Regarding the reduction chicken part, there will be an explanation at the bottom of the video . If you are interested, you can go to the understanding of the reducer to learn more about this aspect. Some structures. Here we will introduce the transmission of spur gears. Generally, what we see is like this. There will be a gear at the motor end and there will be another gear here. When the teeth mesh with each other, the difference from the pulley just introduced is that There is no transmission through the belt , so we can know from here that the teeth of the gear fit with each other when transmitting, so the structure of the gear is very important, and its strength is very important . In this place, there is a general problem of loss. What we see is that if it rotates at high speed, we will often make a shell , and then there will be some lubricated gears in it for transmission , and its service life will be relatively high. Of course, if It's just some simple rotational speeds and relatively slow. You may use some inspection tools. You may be able to make some exposed parts and turn them into gears to make consumables. After the consumables are damaged , it is also a way to replace them directly . So let's take a look here . This is through Gear transmission, you can see that its speed is actually very slow. It moves very slowly, so that it will change the direction of the clamp. We move this place from here to another place and change the direction. So we This action is used through one of the structures of the spur gear , so when we see that its speed is so slow, a reducer is often made on the motor end so that the speed can be slowed down to achieve the same speed even if the speed is so slow. It can achieve the desired torque . Let everyone understand the structure of this aspect. Next, we will introduce the identification method of the sprocket. We may misunderstand it from the appearance. It is a spur gear . If you look carefully, you will find that the width of the sprocket is generally the same. Here It will be relatively narrow , so we often see it made of sheet metal. It may be laser cut or stamped , and some even have the workpiece welded in the middle . After welding, we can do car repairs in the middle. Through the hole and the action of pulling the keyway, it can be fixed in other transportation situations. Then we will transfer it and there will be one more part, called the chain . Therefore, the specifications of the sprocket and the chain must be the same, so the teeth and the chain The chain has its pitch (P), what is its width and how much is it ? In this way, when it is passed on, each tooth can be matched with the chain . In fact, sprockets and chains will see it on many occasions. We see it most often. What's more, you may have ridden a bicycle when you were a child . It has a chain and sprocket structure . There are some motorcycles. We will also see that it looks like a gearbox . Some may have seen it, but we have not directly discovered it. There are some vehicles with wheels of this type. Have you ever thought of any vehicles with wheels like this ? That's the monsters and tanks. Take a closer look at the bottom of the vehicle . In fact, the structure of the track is just a chain and a sprocket . It is said that the outside of its chain is covered with an iron plate, which becomes the wheel at the bottom so that it can move forward and backward when the track is transmitted. The application of its structure in this regard can also be used on heavy machinery and equipment. It is said that sometimes we can see the forklift's forklift jaws rising up. We will also see the chain and sprocket structures. Let's introduce them in a moment. Let's give you some explanations about their applications and let's take a look. It turns out that the chain needs to be distinguished in this way. How to distinguish the sprocket from the gear? Next, let's take a look at the description of the application of the sprocket and the chain. Here we see that it is a conveyor track belonging to a production line. We will look at it. The conveyor track is generally located at the sprocket. It can be combined with the motor and you will see that after the motor is usually equipped with a reducer and combined with it, it can be connected to the chain through the transmission of the sprocket. The transmission means that we can control it to go and do a conveying action in the future. We can add some more sensors on the platform to achieve what kind of actions we can do . Some of them may be for production line transportation or even packaging. , this kind of action can also be used for packaging , so you can see that here, there will be a sprocket through here. Generally, there will be two sprockets, one at the front and one at the front, and then the chain will be fixed in the middle, so you can see There will be some loss problems in this transmission , so sometimes we need to oil this part when doing maintenance. If you are someone who maintains the gearbox, you may be more aware that the gearbox has a similar structure , so this Some places will do some maintenance and oiling . Here you can see that during transmission, a large number of bearings and transmission components are often needed. Some even need to be more precise . Some even have very fast rotation speeds, so generally When making transmission components, no matter the pulleys, gears or sprockets just introduced, we often match them with parts such as bearings . If you don’t know about bearings, you can go to the explanation at the bottom of the video . There is a bearing understanding chapter here. Understand what kind of parts a bearing is, and how to use it to make transmission wheels. Finally, summarize the pulleys , belts, and gears just introduced. How to distinguish components such as chains and sprockets ? What I just introduced is quite detailed. If you still don’t understand this aspect, you can go to the previous chapter to learn the example of how to distinguish it. What we see is a part of the transmission. So it actually has to be matched with other components before we can use it , such as bearings. Bearings are also one of the most important parts . Transmission components will be matched with bearings . If you don’t know much about bearings, you can also go to the bottom of the video. Note that this article will introduce the understanding of bearings, which can be used in other studies and applications . Our bearings also need to be used in conjunction with processed spindles, or motor gearboxes , etc. There are many other types we have Only then can it be integrated into one of the small structures. How to use the structure? So we have to look at what kind of transmission element we need to use in our situation. Sometimes a belt is suitable, and sometimes a sprocket is suitable. In some places, a chain is more suitable. Suitable gears are relatively detailed here , so we will not discuss them separately. The most important discussion today is how we can quickly identify its types and the situations where it can be used. Here I will introduce it to you for a simple study. That’s it for today’s teaching. Let’s look forward to the next teaching! Bye~Bye~
