YRT turntable bearing is a representative series of precision turntable bearing, widely used in CNC turntable, medical equipment and even radar and other precision equipment.
In its production, we should not only pay attention to the machining precision and parts precision of YRT turntable bearing, but also ensure its external surface, raceway and other jumping requirements.
YRT turntable bearing is designed to jump 5m (0.005mm) bearing, parts processing accuracy has been compressed to 3 m below, in the assembly of finished products should be able to meet many requirements.
However, there are still some problems in the production of the assembly workshop, which we will discuss today.
YRT turntable bearing clean dirt not only to deal with appearance, more important is whether the burr on the edge of the bearing raceway and clear clean, after bearing the polishing and grinding operation bearing raceway edge attach to the tiny burrs, once after assembly into the race, will turn bad, noise, or even destroy the raceway, must use gasoline wipe again after complete with microfiber cloth clean the corners bearing;
2, bearing accessories, mainly roller must control the size, the size of the roller will cause the rotary loose and tight, rotary not free, if necessary to increase the roller sampling proportion;
Isolation block, roller often cause scratches when fitting, for these parts can not be applied to finished products;
3. For the low temperature or high temperature requirements of some customers, it shall be considered in advance. After the cold and hot treatment of the journey, the assembly shall be carried out.
I. human problems: personnel relax subjectively during operation, causing sundries to fall into the bearing;
Error in clearance recording, resulting in matching size error;
Negligent use of wrong rollers and other parts;
Analysis: disassembly problem bearing found a small number of bearings in the presence of foreign bodies, accounting for part of the reason;
Ii. Material problems: bearing parts - roller, isolation block size is poor;
Quality problem of grease;
Analysis: the previous batch of repair bearing inspection found that the size of the roller is not the same phenomenon, for the poor incoming material caused by poor rotation of the bearing;
Some bearings use low temperature, so that the change of grease properties, poor rotation;
Three, method problem;
The bearing assembly is not in place due to uneven force;
The test method of clearance is not correct, resulting in excessive clearance and insufficient accuracy.
Iv. Environmental problems: the temperature and humidity in the assembly workshop do not meet the requirements, or the constant temperature in the standard room is not in place, resulting in the measurement size deviation.
