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introduction：For the sake of increasing work efficiency,May improve machine running time,That could be close to a day24Hourly operation,If you operate in a month25Count by the day,It will accumulate to600Operating hours,Such a year will be7200Hour (s),Then its comparison with the general tool machine will be4~5Double the operating time,Therefore, in order to extend the use of the machine, the maintenance of the injection machine must be more important than the general industrial machine. two.Maintenance and inspection 2-----1 Check before operation (1)Oil pressure oil volume check Determine whether the oil level has exceeded the minimum limit of the fuel gauge
2014-12-15 Reading quantity 2866
introduction：1 introduction The main rail is the underwater bottom hole accident gate of the Three Gorges Project、It is one of the important components embedded in the deep hole emergency door and the fast door of the water inlet of the power station，It is the track on which the roller travels when the underwater gate is opened and closed。These main rails have to withstand the enormous pressure of the roller due to the water pressure of the gate and the friction during walking，Total water pressure up to76MN，Each roller acts up to the weight on the main rail500t，Therefore, the main rail is required to have good comprehensive mechanical properties and a deep enough surface hardening layer。According to design requirements，The material is of...ZG42CrMosteel，Matrix hardness is240--260HB，table
2014-12-15 Reading quantity 2946
introduction： Surface roughness：It refers to the small spacing and small peak-valley irregularity of the machined surface。The distance between its peaks or troughs（Wave pitch）tiny（in1mmbelow），Its hard to tell with the naked eye，So it belongs to the microscopic geometry error。The smaller the surface roughness，The smoother the surface。The size of the surface roughness，It has a great impact on the performance of mechanical parts，It is mainly manifested in the following aspects： ① Surface roughness affects the wear resistance of parts。The rougher the surface，The smaller the effective contact area between the mating surfaces，The greater the pressure，The faster it wears out。 ② table
2014-12-15 Reading quantity 1588
introduction：With rolling 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。]The birth and development of industry，NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKStationary ring of bearing
2014-12-15 Reading quantity 1640
introduction：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。]The inner ring is a tight fit with the shaft，The outer ring is loosely matched with the shell，Available press willIKOThe bearing is first pressed into the 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，
2014-12-15 Reading quantity 1526
introduction：The properties of metal materials are generally divided into two categories: process properties and use properties。The so-called process performance refers to the mechanical parts in the processing and manufacturing process，The metal material is cold in set、Performance under hot working conditions。The technological properties of metal materials are good or bad，Determines its ability to adapt to processing and forming in the manufacturing process。Due to different processing conditions，The required process properties are also different，Such as casting property、weldability、malleability、Heat treatment performance、Machinability, etc。The so-called service performance refers to the mechanical parts under the conditions of use，The performance of metal materials，It includes mechanical properties、Physical property、Chemical properties。metal
2014-12-15 Reading quantity 1512
introduction： 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。]The main reasons for the rise in temperature are： first：Whether the quality of lubricating oil has deteriorated？If the lubricating oil is too viscous, it will also causeINAbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce the friction coefficient of load during mechanical transmission
2014-12-15 Reading quantity 1508
introduction： 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。]The raceway noise，Raceway sound is due to bearings[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，Be used for
2014-12-15 Reading quantity 1527
introduction：Fatigue life IKOBearing during operation，Bear a certain load，Even static loads，But for balls and raceways，The stress is cyclic，The material will undergo rolling fatigue resulting in imported bearings[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Reach the end of life。The phenomenon is that a part of the rolling surface material suddenly falls off like a fish scale，This phenomenon is called fatigue flaking（Flaking）。 Noise life
2014-12-15 Reading quantity 1510
introduction：KOYOPremature aging of bearings can cause equipment downtime，Now combined with the authors motor maintenance practice，Introduction guard 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。]The experience of premature aging。bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is fixed in the process of mechanical transmission and reduces the friction coefficient of load
2014-12-15 Reading quantity 1503
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