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introduction：Shaft parts of machine tools，Especially the main shaft，Generally associated withNSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]Or plain bearings assembled into one，And spin at a very high speed，sometimes
2015-01-08 Reading quantity 1458
introduction：Abstract This paper explains the design of a certain product by narrating it，It expresses the concept of parametric design in 3D simulation in optimizing the overall layout、Improve the fault tolerance of structural design，The advantages of shortening the product development process。It is necessary to popularize 3D design software in accelerator design。 keyword Structural design Pro/ENGINEER Parametric design one introduction Three-dimensional designCADSoftware has become product design、developed
2015-01-08 Reading quantity 2889
introduction：Guide oil is suitable for mechanical equipment with a guide device on or around itself。GlideWay 150Guide oil is also suitable for circulating lubrication of bearings and gears。
2015-01-08 Reading quantity 27420
introduction：Superfinishing means under good lubrication conditions，The workpiece rotates at a certain speed，At the same time, fine-grained grinding stone is pressed to the workpiece machining surface with a certain pressure，And a processing method for oscillating motion perpendicular to the rotation direction of the workpiece。It has the following characteristics： 1.Can effectively reduce the ripple degree。Super finishing process，When the arc of the grinding stone in contact with the workpiece is greater than or equal to the wavelength of the workpiece surface waviness，It can ensure that the millstone always acts on the crest of the wave and does not contact the trough，So the crest contact pressure is greater，The convex peaks are removed，This reduces corrugation。 2.Improved ball bearing[bearing
2015-01-08 Reading quantity 1485
introduction：General purpose rolling 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。]designation，Is the use of letters and numbers to represent the rolling bearing or its parts（Spare parts）The structure of、dimension、Tolerance class、Technical performance and other characteristics of the product symbol。 The following bearing dimension standards are referenced in this code method。Bearing generation marked with standard number
2015-01-08 Reading quantity 1554
introduction： For those of you who have a car，I work with cars almost every day，I use the clutch every day，But for the car clutch，How much do my friends know about it?Here is a brief introduction to some knowledge of the car clutch。 The clutch is a part of the automobile transmission system that is directly connected with the engine，It is responsible for the cutting and combining of power and transmission systems，So it can ensure that the car starts smoothly，It also ensures a smooth shift，It also prevents overloading of the transmission system。 If our car is a manual transmission model，Then you have to understand
2015-01-08 Reading quantity 2801
introduction： Steam turbine using saturated steam as fresh steam﹐Also known as wet steam turbine。It is widely used in conventional nuclear power plants(Steam turbine)And nuclear-powered ships﹐It can also be used in geothermal power plants and solar power plants。Compared with conventional large power station turbine of the same power﹐The saturated steam turbine used in nuclear power plant has certain characteristics and requirements。Use saturated steam as admission﹕Generally adopt5～7Mpa of saturated steam。Due to pressure﹑The temperature is lower﹐The amount of available heat given off by the expansion of steam per unit mass in the turbine for work(Enthalpy drop)About half﹐The mass of new steam required per unit of power
2015-01-08 Reading quantity 2883
introduction：Raceway noise is due to tapered roller 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。]When rotating, the rolling element rolls in the raceway and generates a smooth and continuous noise，It attracts attention only when its sound pressure level or tone is extremely high。In fact, the sound energy stimulated by raceway sound is limited，As in normal circumstances，Of high qualityFAGbearing[F
2015-01-08 Reading quantity 1543
introduction： Diaphragm spring clutch is a clutch made of diaphragm spring instead of ordinary helical spring and disengaging rod mechanism，A diaphragm spring is a thin spring steel plate with a certain taper，The central part is provided with a number of conical spring sheets distributed radial grooves。Diaphragm spring is a type of disc spring，It is composed of a disc spring part and a separating finger part。 Advantages of diaphragm spring clutches A diaphragm spring can replace multiple coil springs and release levers，Simple structure、compactness，Light weight;well-balanced，Not affected by centrifugal force，Stable performance，Suitable for high speed engines;Light handling
2015-01-08 Reading quantity 2799
introduction：At presentCPVCResin processing molding into finished or semi-finished products in the process，“plastify”Is a key。Whether its extrusion or injection molding，The quality of plasticizing is directly related to the internal quality and surface quality of the product，consequently，How to from craft、Equipment and technology to obtain good plasticizing quality，To witCPVCKey to processing。The following points can help us understand inCPVCHow to improve plasticizing quality during processing： one、CPVCMolecular formula of CPVC（PVC-C）isPVCChlorinated products，It is a chlorinated modification of polyvinyl chloride，modifiedPVCYou can achieve two kinds of no
2015-01-08 Reading quantity 2883
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