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1、Imported bearing[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。]Take good care of oneself：In order to maintain imported bearings in good condition for as long as possible[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。]Original performance，Take good care of oneself、overhaul、In order to prevent accidents already，indeed
The process of heating the forging blank so that the surface of the forging blank has no or only a small amount of oxide skin。This heating method is especially suitable for matching with less cutting and precision forging。The main factor affecting oxidation is the composition of furnace gas、Heating temperature and heating time。①Furnace gas composition:gassyO2、CO2、H2OThe atmosphere is oxidizing，It is easy to oxidize metals；CO、H2、Cn H m、N2They are reductive atmosphere and inert gas respectively，Prevents oxidation。②Heating temperature：The higher the temperature，The more intense the oxidation。Steel in500℃Low oxidation is very slow,600～700℃Acceleration of oxidation，900℃hyperoxygen
CAXAManufacturing Engineer is an excellent domestic CNC machining software，As the popularity of the software increases，The user base in China is increasing day by day。In order to promote the application of domestic software，Also in order to make everyone as soon as possibleCAXAManufacturing engineers have a clear understanding，We have chosen this article。This paper introducesCAXASpecific steps for manufacturing engineers to apply in CNC machining and manufacturing，A combination of pictures and illustrations，Good readability。 one、introduction At the present stage，Many factories commonly use 2D design software based on2DThe plan of the parts design，Then by the craft staff/Programmer press3D
Photoelectric encoder，It is a kind of sensor that converts the mechanical geometric displacement on the output shaft into a pulse or a digital quantity by photoelectric conversion。Photoelectric encoder output per revolution600（We use the boss didnt say）Pulse per unit，Five-wire system。Two of them are power cables，Three are pulse lines(Aphase、Bphase、Z)。The working voltage of the power supply is（ 5～ 24V）Dc power supply。The photoelectric encoder is composed of grating disk and photoelectric detection device。The grating disk is a certain diameter of the circular plate on the opening of a number of equal rectangular holes。Because the optical code disc is coaxial with the motor，Motor rotation time，The grating disk rotates at the same speed as the motor，Luminescence by meridian
Oils and fats can be classified according to their permissible temperature，The lubricating ability and viscosity of grease are greatly affected by the working temperature，At a certain temperature，Grease can make 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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Keep in good working condition。 The classification of oils and fats can be theoretically divided into low temperaturelt，At a moderate temperaturemt
Grease lubricated with pre-sealed type 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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Sealing method of filling grease，And fill an appropriate amount of grease inside the housing，A filling method of fat supply that is supplemented or replaced at regular intervals。In addition，Yes, there are manyIKOBearings require lubrication of machinery，Pipes are also used to connect to the concentration of each lubrication point
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。]It is a kind of precision basic part product，Proper storage and reasonable installation will bring satisfactory results to your use。While bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。also
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。]Lubricating oil is the decisionKOYOWhether the bearing can work normally for a long time is the main factor，So how are we supposed to tellKOYOThe quality of bearing lubricating oil is good or bad？ first、Judge by color：rightKOYOBearing oil is brown and blue-black。If milky yellow
KOYOOuter spherical 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 state is directly related to the running state of the rotating equipment，KOYOOuter spherical bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce load friction during mechanical transmission
1TBMCharacteristics of tunnel construction TBMThe whole section of the tunnel can be excavated at one time，Primary support，Ballast transport，Invert block laying grouting，The wind、water、Electric line extension，The extension of transport lines, etc。Realize the factory construction of mountain tunnel。TBMThe equipment is very large integrated system，It depends on the characteristics of the equipmentTBMConstruction is different from drilling and blasting： （l）Super large integrated equipment，Require more secure transportation channels and assembly sites and supporting equipment； （2）Tunnel factory construction，Complete facilities are required，And the layout is reasonable； （3）Be under construction
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