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With the accession of ChinaWTOQuickening of pace，Driven by many reasons such as the arrival of the Olympic Games，Our economy is in a state of rapid growth．bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]As the basis of modern industry，In some high-precision industries, China imports bearings[Imported bearing:Simply put, imported bearing agent refers to engaging in a certain import
1Supporting journal The main shaft has two supporting journalsA、BThe roundness tolerance is0.003mm，Radial runout tolerance is0.005mm；And support the journal1∶12The contact rate of the cone≥70％；Surface roughnessRafor0.2m；The dimensional accuracy of the supporting journal isIT5。Because the spindle support journal is used to install the support bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，Used to reduce power transmission
Because the reliability of modern CNC system is getting higher and higher，The failure of the numerical control system itself is getting lower and lower，Most of the failures are caused by non-system itself。The fault outside the system is mainly due to the detection switch、Hydraulic element、Pneumatic element、Electrical actuator、Caused by problems with mechanical devices, etc。 The external faults of CNC equipment can be divided into soft faults and hard faults caused by external hardware damage。Soft failure is due to operation、Caused by improper adjustment，This kind of failure mostly occurs in the early stage of equipment use or the adjustment period of equipment users。For numerical control systems，Another commutation
1、Shaft and bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Selection and control of room tolerances：TIMKENAfter the bearing is pressed into the bearing, it should rotate flexibly without blocking。If there is obvious rotation is not flexible，It means that the size of the shaft is too large，Tolerance to be reduced。If the bearing is pressed into the shaft, the hand rotation is obvious“Shasha”A sense of，The tolerance of the shaft may be too
First check the appearance of each part，Then wash、wipe，Prepare for assembly。Next, the thickness of the ring raceway is separated by deviation，The inner or outer diameter of the ring is positioned during sorting，The results are numbered and recorded。At the same time measure the inner ring width and mark the actual size deviation in the parts factory，Measure the inner diameter and indicate the actual deviation on the ring。 1、bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，To reduce the power transmission process
Screw pump because of its variable transmission、Strong self-priming ability、reversible、It can transport liquid containing solid particles，In a sewage treatment plant，It is widely used in transporting water、Wet sludge and flocculant liquid medicine。Screw pump selection should follow the economy、rational、Sound principle。If the design selection is not considered，Will be given for future use、manage、Maintenance leads to trouble，So choose one according to the actual needs of production，Reasonable and reliable screw pump can ensure smooth production，It can also reduce the repair cost。 one、Screw pump speed selection The flow rate of the screw pump is linear with the speed，Relative to low RPM
So-called bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]play，That is, when the bearing is not installed in the shaft or bearing box，Fasten one of its inner or outer rings，Then there is the amount of movement when the unfixed party makes a radial or axial move。By direction of movement，It can be divided into radial clearance and axial clearance。 Clearance during operation（By the name of
rightIKORegular maintenance of bearing equipment、External spherical bearings removed during operation and replacement of peripheral parts[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]During inspection，It is necessary to judge whether the bearing part can be used again and record the good and bad of the use。Also carefully investigate and record the removed bearing and appearance。So as to
Gear reducer performance characteristics and how to choose？ The gear reducer is an independent closed transmission device between the prime mover and the working machine，Used to reduce speed and increase torque，To meet the needs of the job，In some cases also used to speed up，speeder。 Performance characteristics Gear reducer is a combination of reduction motor and large reducer。Couplings and adapters are not required，Compact structure。The load is distributed on the planetary gears，Therefore, the carrying capacity is higher than that of the general helical gear reducer。Meet the needs of small space and high torque output。 Widely used in large mines，steel，Chemical engineering，Harbor，Environmental protection and other fields
When we do not have too many methods to repair the guide rail, we need to learn more professional guidance knowledge，The method of repairing the bed guide rail by manual scraping is very suitable for those machine tool repair shops that do not have guideway grinding machines，Especially in the repair of precision machine tools，It is more necessary to learn the specific practice of this scraping, so manual scraping will be of great help to us to use the guide rail well in the future。
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