Reading volume:15 发表时间:2019/12/4 8:35:40
If there is no friction, the two objects cannot move with each other, the car cannot move back and forth without friction, and the shoe cannot move forward without the friction between the shoes and the air.Friction seems simple, but it is a very important term.This seems to be indispensable, but we cannot deny that friction will cause wear. There is such a relationship between the sprocket and the chain. The two interact with each other and each other wears off each other.
The level of wear is different. We have to deal with it according to the situation. The wear of the sprocket is currently, and see if it is serious. If it is a small area of wear and can be used continuously, the mark should be clear. Not only do ordinary protection, but more importantly. The thing is that we often pay attention to the wear and tear in the application process, so that we can change it in real time and reduce our loss to a low level.If it is more serious, it should be replaced with a new sprocket immediately, and the chain should also be replaced at the same time to ensure good meshing.If you simply change the sprocket, resulting in poor meshing, it will accelerate the wear of the sprocket. In some respects, although the cost is reduced at the time, your loss will be greater in the long run.
The organization of the sprocket:
1. The tooth shape of the sprocket: The tooth shape must ensure that the chain links can enter and retreat steadily, and minimize the collision and contact stress of the chain link during the meshing time, and it must be convenient for processing.The shape of the end face to which it is often used.It is composed of three circular arcs and straight lines, and is called a three-arc straight line shape.It adopts standard tools for construction, and there is no need to draw the shape of the end face under the construction drawing.
2. Sprocket layout: several organizations that are often used.If it is a small diameter, it is usually made as a whole, if it is medium, most of it is made as a web method, which is convenient for conveying, installing and adding weight. When the hole is opened under the web, then the large diameter can be Perhaps as a combined style, the rings and wheel cores at this time can be manufactured using different materials.
3. Sprocket material: The material needs to ensure that it has sufficient strength and wear resistance. Therefore, the tooth surface is usually solved by heat to reach a certain hardness.