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introduction：Such eccentric shafts require both endsB、CEccentric outer circle andAThe eccentric direction of the reference outer circle is consistent，And the eccentric size is different，Generally in5mmwithin，The eccentricity error must be less than0.05mm。 In order to meet the above requirements，The following processes and tooling are adopted。 First of allAAll outer circles of the reference are machined well，Leave both ends of the shaft50mmlong25mmThe process chuck，Require chuck withADatum coaxial and step planeAReference vertical。 Mill both ends of the shaft chuck flat42h6，See picture1，Demand flatAThe reference center is symmetrical and the ends are parallel。 tooling：Card can two pieces，As shown in the figure
2015-01-10 Reading quantity 1486
introduction： YDGThe series rotary cylinder dryer is developed on the basis of a number of innovations in the conventional rotary cylinder dryer。Internal crushing device added，A unique self-cleaning mechanism is designed，It greatly broadens the use range of conventional drum，Large handling capacity in retention drum、Run smoothly at the same time，Able to handle viscous materials、Paste material，It can even handle liquid materials（slurry），Can be widely used in chemical industry、Brew (wine, etc.)、restrict、Animal manure、Urban sludge treatment and other aspects。 Working principle When the wet material enters the dryer，The high moisture material is lifted to the top by the sheet on the rotating cylinder wall，in
2015-01-10 Reading quantity 2854
introduction： thereforeINAbearing[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 it can work normally has a direct impact on the quality and cost of mechanical products, Especially at mechanical speed、Rolling force is constantly changing in the environment,The service life of bearings has become particularly important。The main performance of composite bearing failure in use is as follows
2015-01-10 Reading quantity 1598
introduction：rollINAbearing[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 generally composed of the following four basic components： Inner ring、Outer ring、Cages and rolling elements——Opposite or centripetal thrust bearing(The inner ring or the outer ring can be collectively referred to as the ring)， Shaft ring、race、Cages and rolling elements——Thrust or thrust radial bearing(Coil or
2015-01-10 Reading quantity 1620
introduction： 1 Definition of grinding Grinding machining generally uses high-speed rotating grinding wheels,The process of cutting the processed material using the extremely hard fine abrasives that make up the grinding wheel。 2 Characteristics and disadvantages of grinding processing Grinding is compared with cutting,Have the following characteristics。 (1)It can easily cut hard or brittle materials that cannot be cut with cutting tools。 The cutting edge of the grinding wheel is a very hard mineral particle,It can easily process superhard alloys and ceramic utensils。 (2)Can easily obtain the required machining surface roughness and
2015-01-10 Reading quantity 1487
introduction：Forklift drive axle should be reasonable selection Spectroscopic analysis and ferrography can be used to identify the composition and content of solid particles and contaminants in oil。When the size of the steel adhesion particle in the ferrography analysis is greater than200μm，contingent60μmThe steel has more adhesive scratches10%When the back oil should be replaced。When analyzed by spectroscopy，If two consecutive samples are taken under the rated capacity of lubricating oilFeThe content of elements is close to or exceeds1000ppmThe lubricating oil should be replaced。 Abnormal oil indicates the presence of a fault Drive axle teeth
2015-01-10 Reading quantity 2920
introduction： The scale of the linear scale or the wavelength of the light wave is taken as the known length﹐An optical length measuring tool for contact measurement using a mechanical probe(figure1 Measuring machine )。The length measuring machine has a capability in3Sum of moves in one coordinate2Adjustable table for rotation in one coordinate﹐Also comes with different probes and accessories﹐It is often used to verify large size gauges and measure the inside of various workpieces﹑External dimension。The length measuring machine has 1meter﹑3meter﹑6Rice hoa6Several measuring ranges, such as meters and above﹐The index value is usually
2015-01-10 Reading quantity 2847
introduction： Full section rock boring machine imported from Germany（TBM），In the Xikang railway Qinling Mountains1The north entrance of the line is under construction，A rare occurrence of the main 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 lubrication system contaminates the main hydraulic system。When failure occurs，The mileage isDK68＋295.48m，TBMThe net driving time is2
2015-01-10 Reading quantity 1612
introduction：huoyun qiche Freight car truck A car for transporting goods，Most of them have a separate cab and a cargo box adapted to the requirements of the cargo transported(The cab and trunk of a minivan are often integrated)，Truck for short。 Type trucks are divided into two types: road trucks and off-road trucks。The main parameters of the truck are the loading capacity and the total weight。Most countries divide road trucks into several tax brackets according to their total weight。Chinas classification method is：All up weight15Heavy goods vehicles with tons or more，6～15The tonnage is a medium truck，6Light weight under tons
2015-01-10 Reading quantity 2883
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。]Assembly is an operation that fitters often have to do in assembly and repair work，The adjustment and pre-tightening of rolling bearing clearance is an important part of rolling bearing assembly。Accurately grasp the process concepts of clearance adjustment and pre-tightening，And in the assembly work the correct use of this process
2015-01-10 Reading quantity 1521
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