What are the reasons for the decline in the accuracy of the grinding machine spindle bearing? -

Many people have found in production that the bearing accuracy of the grinding machine has decreased, so what are the reasons for the decreased accuracy of the grinding machine spindle bearing? In fact, there are many reasons for the decline in the accuracy of the grinding machine spindle bearing: the installation may not be in place, the bearing accuracy may not be good, the bearing may not be adjusted properly, and it may need to be run-in and so on. In fact, each part has errors. The maintenance of high precision is a system, not a single one. Even if all parts have high precision, it may not be able to achieve high precision, because the errors can be accumulated; conversely , even if the precision of all the parts is not high, if it is designed and installed correctly, it can achieve very high precision, even higher than the parts with high precision; because the errors can also be offset. Let's talk about the installation and disassembly of the grinding machine spindle bearing: there are certain principles for structural installation and disassembly. For example, when disassembling the machine tool spindle, some people will choose to disassemble and then assemble it, and some people will disassemble it modularly. And assembly, some people like to use brute force, some people like to use special tooling; especially when disassembling the bearing, the precision of the main shaft has been destroyed when dismantling, and the precision must be restored when installing. The practice includes re-grinding the installation position, selecting a bearing with a small error, multiple bearing displacement and so on. Let’s talk about the installation of the grinding machine spindle bearings: most of the bearings and shafts are over-win fit, what is the temperature range that the shafts and bearings can withstand, heating and cooling temperature control is very important, overheating and cooling will cause stress to deform the grinding machine spindle and bearings. Finally, there are shells, load bearings and ground subsidence causing deformation and so on. This is why your grinder is less accurate. Only when the torque is accurate can the rotation be stable!

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