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introduction：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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Outer ring processing process：Bearing steel——>forge——>anneal——>Vehicle processing——>Heat treatment——>grinding——>Fit out——>inspect——>Packing and warehousing 2、The purpose of forging process
2015-01-15 Reading quantity 1574
introduction： （one） Processability of blanking parts：The ability of blanking parts to adapt to the process。That is, the structural shape of the blanking part，dimension size，The accuracy of the workpiece depends on the difficulty of blanking。 Shape and size requirements of blanking parts： （1） The shape of the blanking part is simple，symmetry。 （2） The corner of the inner hole should avoid sharp angles。 （3） Minimum size and material for punching，Hole shape material thick，The use of sheaths is relevant。 （4） Avoid having long and slender arms and long and narrow slots on the workpiece，In case the punch breaks。 （5） Between the holes and holes of the punching parts，hole-to-edge
2015-01-15 Reading quantity 2817
introduction： Ever since1992The beginning of the New Year，PLCopenHas helped to promote and support programming standards，Reduce training，But added more logical structure and modularity，And using modern software technology。PLCopenconsider，Each program is carefully structured，Increases its repeatable utility performance，Reduce errors，Increased design and user efficiency。 Of course，The standard allows for two approaches when developing programs：From the top down and the bottom up。 You can specify your overall application，It is divided into subsections，Or declare variables, etc。Or you can start at the bottom
2015-01-15 Reading quantity 2898
introduction： Derrick type crane mounted on a special floating boat﹐Also known as crane ship。Widely used in ports﹑Shipyard and water work site﹐Handling of materials﹑Equipment lifting and water rescue work。Pontoons are often flat-bottomed boats that resemble rectangular hexahedrons﹐To increase the ability of the floating crane to resist heeling﹐There are two kinds of self-propelled and non-self-propelled。Self-propelled pontoons are equipped with power plants﹑propeller﹑rudder﹐It can sail independently on water﹔If the propeller blade vertical mounted propeller﹐It can also shift left and right and turn in place﹐Therefore, it has good maneuverability when working。The non-self-propelled float is towed by winch equipment when it is displaced﹐Long distances are towed by tugs
2015-01-15 Reading quantity 2816
introduction：At present，The planetary reducer has achieved the greatest development in construction machinery and other fields，But with the countrys increasingly strict requirements on noise pollution，The future development of the planetary reducer is accompanied by great pressure and challenges。General Motors believes that planetary reducer enterprises should be on the product“flat”Level put forward higher requirements，In response to the requirements of the national environmental policy。 recent，In response to the requirements of the national environmental policy，Reduce the noise pollution generated by the reducer during operation，The reducer enterprises have all kinds of reducer technical adjustment and improvement。At present，China reducer industry needle subtraction
2015-01-15 Reading quantity 2869
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。]After pressing 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 thrust cylindrical roller bearing is pressed into the shaft, it is obviously rotated by hand“Shasha”A sense of，It may be that the tolerance of the shaft is too large or the roundness of the shaft is not good。So in control of the shaft
2015-01-15 Reading quantity 1488
introduction：pick to：This paper is based on the research on the wear characteristics of conductive heating cutting tools，Pass the test，The tool performance of conductive heating cutting is analyzed。 keyword：Conductive heating cutting Tool wear Tool performance ExperimentalInvestigationofToolingQualityofToolinElectricHotMachining WuTuoetal Abstract：Bacedonthestudyof
2015-01-15 Reading quantity 2916
introduction： First create a render part or call your own needed parts The second step，Build a flat part or other matrix part，Used to place the front parts，Thats how you get a reflective effect， The plane should be as large as possible。 The third step，Create a new assembly，Insert the parts made earlier
2015-01-14 Reading quantity 2914
introduction： Internal factors mainly refer to structural design、The manufacturing process and material quality determine 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，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。]Three factors of quality。 First of all，The structure design is reasonable and advanced at the same time，Will have a longer bearing life。bearing
2015-01-14 Reading quantity 1577
introduction：Human sweat is a colorless transparent or light yellow with a salty taste of weakly acidic liquid,thereofphBe worth5~6Sodium free、potassium、calcium、Extra-magnesium salt,It also contains small amounts of urea、Lactic acid、Organic acids such as citric acid when sweat comes into contact with metals,A film of sweat forms on the surface of the metal,Sweat film can cause electrochemical effects on metals,Etch metal Under some special conditions of use,Add a small amount of solid lubricant to the grease,If joined3~5％the1Molybdenum disulfide reduces wear,Improve pressure and heat resistance,For high temperature、elegance、High vacuum、Corrosion resistance、Radiation resistance,And special conditions such as extremely low temperatures,fastening
2015-01-14 Reading quantity 1467
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