Structure and Maintenance of Grinding Machine Dynamic Pressure Spindle

The level of maintenance technology for grinding machine dynamic pressure spindle can be described. Why? The grinding machine spindle requires high precision, high mechanical strength, and high stability, but in this case, the maintenance of the dynamic pressure grinding machine spindle also carries great risks, and maintenance is usually not carried out. If not careful, repairing the new dynamic pressure spindle may block the bearings, leading to emergency repairs and damage to the new equipment. Therefore, in order to meet these requirements, maintenance personnel must have a high level of technical proficiency, a good attitude, and patient debugging. Next time, I will introduce some dynamic axis structures that I am familiar with

External cylindrical grinders and grinders generally consist of a bearing assembly and three sets of five parts. Ceramic tiles are our common name It should be called sliding bearing and dynamic bearing. Due to the large spindle drive of grinding wheels, the main application is the bearing structure. If roller bearings are used, ripples will occur and the problem of processing the product will be minimal. For large grinding or large load-bearing spindles, static pressure bearings are required, which have both static and dynamic structures, but I haven't seen them yet. I just listened to the opinions of my colleagues. I will repeat the difference between fluid dynamic bearings and fluid dynamic bearings later. Dynamic bearings are a type of large friction bearing that experiences significant radial resistance after normal operation of static bearings. Therefore, the gap and distribution of contact points between the bearing and ceramic tiles are relatively high, which requires maintenance personnel to thoroughly clean the bearings. In the machining process, in order to provide people with a very accurate dynamic spindle, it is also necessary to understand the machining process. Due to various reasons, we cannot disclose too much about the process. In addition, the dynamic balance of the dynamic pressure spindle is also important. If conditions permit, everything can be done better. Therefore, when using dynamic compression of the spindle, it can be separated

For internal cylindrical grinders, the moving shaft of the grinder usually adopts the form of roller bearings. Due to the relatively small size of the circle, the workload is relatively small, and the relatively high working speed is not suitable for dynamic structures under static pressure. At the same time, due to the high speed, generally between several thousand and 2000 RPM, there are clear requirements for bearings and lubrication

Flat grinding machines and spindle force structure grinding machines are more important. The pressure and static pressure are the same, only the shaft length is the same. Use all bearings before and after. Ceramic tiles come in very different shapes, such as brick, cross-sectional shape, pipe shape, fan-shaped, and the first three rollers. The length of the first three axes is different from the length of the last three axes. The shape of the pipeline is different from that of a single cone tube and a double cone tube In short, from the shape of the mill. The origin will be very different. There is a special structure. The rotor and dynamic pressure spindle are uneven and installed on two parts (the dynamic pressure spindle is a combination of the rotor of a surface grinder)