What should be paid attention to when polishing thin-walled bearings with uniform cross-sections? What are the noise reduction and sealing technologies like?

等截面薄壁轴承抛光要注意什么问题?　

　　1.等截面薄壁轴承抛光须在干净无尘的室内进行。因为坚硬的尘粒会污染研磨材料，损坏接近完成的模具表面。

　　2.每个抛光工具仅使用一个等级的抛光金刚石膏，并储存在防尘或密封的容器中。

　　3.想换更细的砂号时，要注意砂号是否完全覆盖了之前(较粗)的砂粒，一定要把手和工件清洗干净。

　　4.在开始打磨时，要先处理好边角、拐角、圆角等难以打磨的地方。

　　5.在处理尖角和拐角时，应特别注意不要形成圆角或边缘。研磨模具和抛光油石应尽量使用硬质抛光工具。

　　其中等截面薄壁轴承的降噪与密封技术如下：

1. Noise reduction technology for thin-walled bearings with equal cross-section:

　　Bearing noise is an important source of environmental pollution and an important indicator that needs to be controlled in the bearing industry, especially in household appliances, office machinery and instruments. In the past decade, my country's bearing industry has done a lot of work in reducing bearing noise, which has greatly improved The noise reduction level of bearings is still a certain gap compared with foreign countries. The prominent problem reported by users is "abnormal noise", that is, irregular sudden sounds or even screams during the operation of bearings. The factors affecting bearing noise are many and complex. It is necessary to consider the overall design of the bearing, the inner ring, outer ring, cage, rolling element, lubricating oil (grease) of each part of the bearing, the materials used in each part of the bearing, the processing technology and even the equipment and process materials used in the project. Conduct analysis and research. This is the basic content of bearing noise technology.

　2.Constant-section thin-walled bearingsSealing technology

　　The newly developed rolling bearings are equipped with corresponding sealing devices at both ends. On the one hand, they can protect The grease (oil) inside the bearing does not leak during use, ensuring that the bearing is in a lubricated state; on the other hand, it is to protect the bearing so that dust or harmful gases from the outside will not enter the bearing cavity to avoid damaging the bearing. There are commonly used rubber or There are engineering plastic seals and steel stamping seals (or dust covers). There are various sealing structures and different sealing effects. If there is a gap between the seal and the bearing, it is called a non-contact seal. The smaller the gap, the better the sealing effect. The better, but the allowable speed range of the shaft is smaller. If there is no gap between the seal ring and the bearing, it is called a contact seal. The larger the contact area of ​​the seal ring contact lip, the better the sealing effect, but the smaller the allowable shaft speed. Sealing technology is mainly researched and developed to suit different working conditions. The corresponding sealing device, as well as the compatibility of the sealing ring material and the corresponding grease, etc.