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introduction： usual，The shaft is made of two 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。]Supported in radial and axial directions，The bearing on one side is called the fixed-end bearing，It bears both radial and axial loads，It acts as the relative axial displacement between the fixed shaft and the bearing box。The other side is called the free end，Bear radial loads only，Axial can phase
2015-04-20 Reading quantity 1553
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。]Used in a variety of mechanical equipment，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。]required
2015-04-20 Reading quantity 1460
introduction：SKFPaired single row angular contact balls have72XXand73XXSeries two，Parallel 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。]Standard accuracy isP6level（Not marked in bearing type），They can be arbitrarily combined into back-to-back form or face to face form。Their suffix meaning：{TodayHot}
2015-04-20 Reading quantity 1554
introduction：1 、Static use or90Degree zigzag assembly use: This part of the productFCCLTo use high ductility electrolytic copper foil, The supplier is mainly DuPont Taiju or Lusheng Technology。Coverlay View surface thickness depends on specification。 2 、Dynamic use of high bending products( LVDS hing cable) : This part of the productFCCL In order to useRA Rolled copper foil based，Supplier to Toray or Xinyue technology is the main， Coverlay View surface specifications and impedance matching controls determine thickness requirements， cove
2015-04-20 Reading quantity 2812
introduction： whenTIMKENbearing[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。]When the temperature rises，The first thing to determine is whether there is a wrong action，If the temperature is indeed rising，The following actions should be taken immediately： (1)Check cooling water pressure，Water flow and piping system is normal。If the water is low it could be a filter
2015-04-20 Reading quantity 1501
introduction：Abrasive wear A wear in which abrasive particles or protrusions cause the surface material of a part to be lost during friction。Abrasive particles generally refer to non-metallic materials﹐quartsiness﹑Mineral rock and sand, etc。Hard metal particles or bulges can also cause wear on soft metals﹐Abrasive wear occurs when work-hardened scraps fall between friction pairs。Abrasive particles softer than the part material can also cause wear﹐This phenomenon is commonly seen in coal mining machinery。 The main mechanism of abrasive wear is﹕microcutting﹐That is, hard abrasive particles are used to make extremely small cuts to the surface of the part like a tool﹐Chip formation﹔When the abrasive particles are round or at an inappropriate Angle relative to the surface of the part﹐Watch only
2015-04-20 Reading quantity 2817
introduction：chuan yong guolu Marine boiler marine boiler A boiler that supplies steam to the steam-powered machinery that propels ships。The difference between Marine boiler and land boiler is，Matching contour、There are strict limits on size and weight。Such as，On a warship, it is better to sacrifice the thermal efficiency of the boiler than to install an air preheater,Not even a economizer。structurally,The boiler should be able to adapt to the sway of the ship、Navigation conditions such as roll and impact。Marine boilers must have a certain amount of steam、Water storage capacity，To meet the needs of steam power machinery frequent and large changes in load。In order to satisfy
2015-04-20 Reading quantity 2803
introduction：yuanzhudu celiang Cylindricity measurement cylindricity measurement Measurement of cylindricity error in length measurement techniques。cylindricity（See form and position tolerance）It is a synthesis of the roundness of a cylinder and the straightness of a prime line，Therefore, cylindricity is generally attached to the roundness meter that can move axially along the measured cylinder、To be measured by electronic computers and corresponding programs。Measuring time，The probe of the length sensor measures several cross sections of the measured cylinder along a precision linear guide，Spiral motion sampling along the measured cylinder can also be performed。measured
2015-04-20 Reading quantity 2802
introduction：Tool Steel tool： Its heat resistant temperature is about200-300℃among，Can only be applied to the cutting of general materials，It loses its hardness at high temperatures。This kind of tool has poor heat resistance，The cooling effect of the coolant is required to be good，Generally, it is advisable to use emulsion。High speed steel tool： This material is made of chromium、nickel、tungsten、molybdenum、vanadium(Some also contain aluminum)Based on high-grade alloy steel，Their heat resistance is significantly higher than that of tool steel，The maximum allowable temperature is up to600℃。Compared with other high temperature resistant metal and ceramic materials，High-speed steel has a range of advantages，In particular, it has a high tenacity，Suitable for geometric shapes
2015-04-20 Reading quantity 2793
introduction：The main difference between NC machining process route design and general machine tool process route design,It often does not refer to the entire process from blank to finished product，It is only a specific description of the process of several CNC machining procedures。Therefore, it must be noted in the process route design，Because CNC machining processes are generally interspersed in the entire process of parts processing，Therefore, it should be connected with ordinary processing technology。Process flow chart1As indicated。 figure1Process flow The following problems should be paid attention to in the design of CNC machining process route： 1、Division of process
2015-04-20 Reading quantity 2902
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