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introduction：Fixed 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。]Dimension parameter On many occasions，The bore size of the bearing has been specified by the structure of the machine or device。Regardless of service life，Whether the safety factor and economy of static load meet the requirements，Before the final selection of the rest of the bearing size and structural form，They all have to be scaled
2015-04-08 Reading quantity 1435
introduction：A worm drive consists of a toroidal worm and a worm gear paired with it(figure1 [Toroidal worm drive])。The cross Angle between the two axes is usually90°。A toroidal worm is a worm with a toroidal indexing surface。This kind of transmission can be divided into two types: linear toroidal worm drive and enveloping toroidal worm drive。 Linear toroidal worm drive is also known as spherical worm drive。The spiral surface of the worm is formed by the spiral movement of the straight line as the bus line，Therefore, the axial tooth profile of the worm is straight（figure2 [Linear toroidal worm drive]）。The characteristics of linear toroidal worm drive are：①The worm and the worm
2015-04-08 Reading quantity 2879
introduction：Oil film bearings for rolling steel[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。]Generally used as a roll support，Extremely bad working condition，On the one hand, the speed and load vary greatly、High impact vibration、Some mill alignment、Frequent inversion，Make the dynamic pressure oil film formation is difficult to stabilize，Easy to cause dry friction or boundary lubrication，Damaged bearing；On the other hand, the cooling water splashes、oxidation
2015-04-08 Reading quantity 1541
introduction：Abstract：At present, hot water supply pipelines in civil buildings usually use copper pipes and copper pipesPB（polybutene）tube，Now its time to compare the two pipes。 keyword：Copper pipePBAt present, hot water supply pipelines in civil buildings usually use copper pipes and copper pipesPB（polybutene）tube，The two pipelines are compared as follows： Material property Copper is a traditional metal material，It has a long history as a pipe，Impact strength、Good mechanical properties such as pressure resistance；Corrosion resistance、Heat conduction、conduction、Chemical resistance to continuous cracking、Physical properties are not conducive to use in
2015-04-08 Reading quantity 2779
introduction：1、The range of commonly used flexible packaging materials is：PP/OPP/BOPP：18-60μ，PET：10-30μ，CPA：20-60μ，BOPA：12-20V；Aluminum foil：18-40μ，paper：40-120g/Square meter；Composite material：Generally not more than120g/Square meter。Flexible packaging gravure printing machine printing film minimum thickness up to7-9μ。 2、The most common substrate width is1000-1300mm。Foreign countries have recently produced widths up to1700mmThe flexible packaging gravure printing machine。 3、In recent years, the international market for flexible packaging concave
2015-04-08 Reading quantity 2890
introduction：Location permitting，Try not to use vertical installation。Vertical installation，The amount of lubricating oil added is much more than the horizontal installation，It is easy to cause heat and oil leakage of reducer。Imported by the factory40000bottle/’Pure draft beer production line，Some are vertical mounted，After a period of running，The transmission pinion has greater wear，Even damage，After adjustment，The situation has greatly improved.
2015-04-08 Reading quantity 2814
introduction：TIMKENbearing[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。]Whether the installation is correct，Affect the accuracy、Life span、property。therefore，The design and assembly department should fully study the installation of bearings。It is expected to be installed according to operating standards。The operating standard items are usually as follows： （1）Check dimensions and finish of associated parts
2015-04-08 Reading quantity 1439
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 reason is due toIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，solitarism
2015-04-08 Reading quantity 1530
introduction：one、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。] 1、INAThe combination of bearing and shaft adopts base hole system，INAThe combination of bearing and housing adopts the base shaft system。 INABearing size tolerance and rotation accuracy of the numerical pressGB307-84Regulation of...。 2、withINABearing fit journal andINAshaft
2015-04-08 Reading quantity 1559
introduction： 1.High carbon chromium 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。]Annealing of steel Isothermal spheroidizing annealing Spheroidizing annealing of high carbon chromium bearing steel is to obtain a uniform distribution of fine ferritic matrix、small、well、The organization of round carbide particles，Prepare the structure for later cold working and final quenching and tempering。
2015-04-08 Reading quantity 1443
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