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introduction：INAbearing[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。]Grease lubrication and oil lubrication(Oil bath lubrication)The limit speed is shown in each bearing size table，Its numerical value represents the standard design of the bearing in the general load bar a (C/P/≥13，Fa/Fr≤0.25around)The limit of the speed when rotating down。 In addition，
2015-01-08 Reading quantity 1553
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 function of matching is to make the bearing stationary ring and rotating ring respectively with 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。
2015-01-08 Reading quantity 1568
introduction：hiwinThe preloading of the guide rail has3Seed precompression：FC：Light precompression；F0：Intermediate precompression；F1：repreload。
2015-01-08 Reading quantity 25234
introduction：feitenglu Fluidized bed furnace fluidized bed combustion boiler The solid fuel is held up in the furnace by an upward flow of air，Roll up and down in a certain height range，And in a fluid state(boiling)State the furnace for combustion，Also known as fluidized bed combustion furnace。The boiling combustion method is also used in other furnaces。The characteristic of the boiling combustion method is that the solid fuel is not burned at rest on the grate as in the layer fire furnace；It does not use liquid as it would in a chamber furnace、Gas or solid fuel ground into a fine powder is suspended in the furnace empty
2015-01-08 Reading quantity 2877
introduction： one．Domestic application of CNC machine tool handle and matching nail standards １．National standardGB10944－89《Automatic tool changing machine7:24Taper tool handle40、45and50Taper shank》 This national standard specifies the handle，In type and size with international standardsISO7388／1Exactly the same。See the diagram for details7.3-1and7.3-1。withISO7388／1Compare with，Some necessary technical requirements have been added，The surface roughness and form and position tolerance are marked，To ensure the manufacturing quality of the handle，Satisfy automatic processing
2015-01-08 Reading quantity 2901
introduction： Vacuum pump using water vapor jet to extract air﹐Jet pump。Jet pump features are﹕Fast activation﹐Wide working pressure range﹐High pumping capacity﹐It drains directly into the atmosphere﹐Simple structure﹐Reliable operation due to no moving components﹐Long service life。This kind of pump is suitable for removing dust﹑condensability﹑Corrosive and flammable and explosive gases。However, the steam and water consumption of this pump is larger﹐Low utilization rate﹐Therefore, it is suitable for cheap by-product steam or available residual steam﹑The occasion of waste steam。Jet pumps have been widely used in vacuum smelting﹑Vacuum degassing﹑Vacuum concentration﹑Vacuum drying﹑Vacuum distillation﹑Vacuum refrigeration and vacuum transportation。Water vapor
2015-01-08 Reading quantity 2889
introduction：1、Less power The driving torque is only for the sliding screw pair1/3，It has high movement efficiency，It can save more electricity。 2、High precision guarantee Ball screw pairs are produced by a high level of mechanical equipment，Higher production accuracy。 3、Micro feed possible Ball screw pair is due to the use of ball movement，So the starting torque is very small，There is no crawling like sliding motion，Precise micro-feed is guaranteed。 4、No backlash、High rigidity The ball screw pair can be prepressed，The axial clearance can be negative due to the prepressure
2015-01-08 Reading quantity 1442
introduction： driveSKFbearing[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]Its a central nervous system condition in a mechanical state，In order to be able to roughly ensure the normal things of the drive shaft situation，You can probably extend the result of life in this respect
2015-01-08 Reading quantity 1542
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
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