In the SKF bearing of tapered roller in Xuzhou, both the roller and the inner and outer raceways are tapered surfaces. In the manufacturing process, due to the deviation of the diameter, angle and length of the cone ring, the contact between the inside and outside of the cone joint will affect the base distance. In the assembly process of tapered roller bearings, the processing quality of rolling elements has a very important impact on the assembly quality of bearings. At present, in the domestic bearing parts processing, the quality control of rolls has been paid more and more attention. This has created conditi*** for the development and wide application of random assembly method in the assembly process of tapered roller bearings.
The so-called random assembly method refers to dividing Xuzhou SKF bearings into a group of N particles according to the sequence of ** final processing at the production site, and putting each group of rollers into special packaging such as plastic pipes, plastic bags, boxes, or directly forming parts with plastic cages. By touching the steel stamp on the bearing, the bearing can be recognized more quickly and accurately. This kind of stamp does not need to be touched by hand, but when the finished product is assembled, the existence of the stamp can be felt by touching the stamp on the nail lightly. Each set of rollers is then mounted in a set of bearings. Compared with selective assembly, random assembly has many advantages and better economic benefits. For example, it simplifies the process flow, does not classify the ** final processing barrel, and s***es manpower and material resources.
The traditional assembly method of tapered roller Xuzhou SKF bearings is to mix the processed rollers together, and then assemble them into cages by classifier or manual size grouping. Bearing has the advantages of high rated load, low noise, greatly reducing maintenance costs and prolonging machine operation time. When separating tapered rollers, the separator can only measure one point of Xuzhou SKF bearing, but can not measure the angle of the rollers; it can not ***oid inaccurate positioning accuracy caused by unclean products, which reduces the sorting accuracy; at the same time, it can not ***oid the occurrence of product clogging, bumping and rusting. At present, the design and manufacture technology of tapered roller separator in our country is not mature, and the dimension grouping of tapered roller seriously affects the assembly quality of bearings.
In the assembling calculation of SKF bearing with tapered roller in Xuzhou, theoretical analysis and numerical examples show that the dimension deviation of general bearing matching parts can meet the requirement of width deviation of finished bearing.