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introduction：Clean the surface of the machine before inspection，Then remove 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。]Peripheral parts。Oil seals are fragile parts，Careful disassembly is required，Do not apply excessive force，Then carefully inspect the oil seal and its surrounding parts，If adverse symptoms have been shown，Be sure to replace，Bad oil seals can cause bearings
2015-01-13 Reading quantity 1681
introduction： (1)The resultant force of the force passes as far as possibleSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Axis of，This requires the point of application to be uniform, symmetrical and stable，Force is applied through a sphere or parallel to an axis。 (2)applied
2015-01-13 Reading quantity 1549
introduction： COMisComponent Object Modelrind，Be allOLEFoundation of mechanism。COMIs a standard for implementing programming language-independent objects，The standard willWindowsThe object is defined as an independent unit，Access these units programmatically free。This standard enables two applications to communicate through an objectified interface，Without knowing how they were created。Such as，User can useC++Language create aWindowsobject，It supports an interface，Through this interface，The user can access the object
2015-01-13 Reading quantity 2916
introduction：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 quality is on a great level withIKOThe quality of bearing steel is closely related。Due to the characteristics of bearing steel，The requirements for smelting quality are much stricter than those for general industrial steel，Like the chemical composition of steel、purity、The uniformity of organization and structure。 first、Strict chemistry
2015-01-13 Reading quantity 1462
introduction：Plain 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。]One revolution、Raceway surface of inner ring and outer ring，Due to the rolling contact with the rolling elementSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFGroup headquarters
2015-01-12 Reading quantity 1548
introduction：With the diversification of market demand，Machine tool manufacturers often provide the same machine tool can be configured with multiple CNC options or the choice of multiple selection functions in the CNC system。 CNC systems for machine tool configuration provided by machine tool manufacturers are divided into mainstream systems and adaptable systems，Mainstream systems are relatively technologically mature，However, users should have other requirements，For example, the pursuit of quality for brand-name systems、Hope to have better after-sales technical conditions in China、The numerical control system used in the user unit is relatively concentrated in a few other requirements，In order to use master and repair parts ready，So user units are willing to configure themselves to be trusted or compared
2015-01-12 Reading quantity 2898
introduction：ranqilunji kongzhi xitong Gas turbine control system gas turbine control system The control system of a gas turbine includes a regulating system、Control system and security system。The function of the control system is to control the working condition of the machine within the permissible range of safety，To meet the requirements of the load and the requirements of the economy and service life of the machine itself。The content and complexity of each system varies with the purpose and capacity of the machine。Mechanical hydraulic control systems were once dominant in gas turbines，But it is difficult to group
2015-01-12 Reading quantity 2940
introduction： The so-called polymer materials refer to materials based on polymer compounds，Polymer materials are materials composed of compounds with relatively high molecular mass，Including rubber、plastic、Fiber、coating、Adhesives and polymer based composites，Polymers are forms of life。So relative to other materials，The physical and chemical properties of polymer materials are relatively good，There are four specific properties as follows。 1、insulativity Polymer molecules are good insulators，The insulation property is equivalent to ceramic。Convection heat、Sound also has good insulating properties。 2、Resistance to
2015-01-12 Reading quantity 1748
introduction：SBPinwheel cycloidal reducer is a kind of transmission device redesigned on the basis of the cycloidal pinwheel reducer，Cycloidal reducer is widely used in petroleum、Chemical engineering、Light industry、spin、food、plastic、pharmacy、ceramic、Printing and dyeing、metallurgy、mine、tobacco、papermaking、tanning、carpenter、Electronic instrument、glass、Environmental protection and other transmission lines、Assembly line、In the field of machinery and equipment，SBThe structure and characteristics of pinwheel cycloidal reducer are as follows： one、SBThe pin-wheel cycloidal reducer adopts a pin-gear that engages simultaneously with an internal cycloidal wheel and an external cycloidal wheel，Achieve deceleration drive，It eliminates the necessity of ordinary cycloidal pin wheel reducer
2015-01-12 Reading quantity 2902
introduction： Low voltage general frequency conversion output voltage is380～650V，Output power is0.75～400kW，Operating frequency is0～400Hz，Its main circuits are all alternating-straight-Alternating current circuit。 Common control mode in frequency converter： 1 Non-intelligent control mode The non-intelligent control methods used in AC frequency converters areV/fCoordinated control、Slip frequency control、Vector control、Direct torque control, etc。 (1) V/fSinusoidal pulse width modulation（SPWM）Control mode
2015-01-12 Reading quantity 2933
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