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introduction： CN........Radial normal clearance；It is generally used only with the following letters indicating reduced or shifted clearance H........The clearance reduction range corresponding to the upper half of the actual clearance range L........The clearance reduction range corresponding to the lower half of the actual clearance range P........The deviation gap range includes the upper deviation of the actual gap range and the lower deviation of the adjacent larger gap range The above letters are also used with the following gap groups：C2、C3、C4 and C5,
2014-12-15 Reading quantity 1472
introduction：（1）KOYOBearing installation，You should use appropriate measuring tools，According to the technical requirements of the design drawings provided，Check shafts and 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。]Seat hole and machining quality（Such as dimensional accuracy，Shape accuracy and surface roughness）。 （2）Shaft and bearing[bearing:bearing（“Be
2014-12-15 Reading quantity 1516
introduction： Angular contact ball 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。]It is one of the important components of construction machinery,Poor installation will affect its use effect,It even causes the failure of construction machinery and equipment。In bearing[bearing:bearing（“Bearing”，day
2014-12-15 Reading quantity 1493
introduction：What is calledNSKbearing[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。]The condition of a burn injury is:Bearing raceway wheel、The rolling element and cage heat up rapidly in rotation until they change color、malacia
2014-12-15 Reading quantity 1633
introduction：PLCApplication in pulse generating controller Pulse generator：By programmable controllerS7-200PLCAnd text manipulatorTD200To control the on-off time of the solenoid valve，The number of adjustable solenoid valves is output in the form of a square wave with adjustable duty cycle and period。Have taken advantage ofPLCPowerful time relay features andTD200The man-machine operation function。The on-off time of the solenoid valve can be adjusted at any time。 one、Process requirement： 1、The high level is adjustable。Time control0~10In seconds。（Power-on timeT1tunable） 2、Power cycle between each solenoid valve（Pulse widthT2）Can be
2014-12-15 Reading quantity 2887
introduction：Company website http://www.hljjsj.cn At present, more and more engineering drive equipment has been using motor drive ，Due to the high speed and low torque of the motor, it is generally impossible to directly drive the execution equipment ，This requires the use of a reducer to transmit power。The reducer commonly used in engineering is Its a gear reducer，Gear reducer has a long history of application，modern The rapid development of industry has also put forward higher requirements for reducer，Mainly manifested in Higher power capacity required、Shorter development cycle、Large torque range、design form
2014-12-15 Reading quantity 2878
introduction： 1 Test materials and methods The raw material is produced by Xingcheng Special SteelGCr15bearing[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。]steel。 Process route：100t EBTElectric furnace smelting-LFrefine-VDVacuum treatment-CCM300Billet warm delivery(Or into the slow cooling pit)-Tandem rolling
2014-12-15 Reading quantity 1520
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。]Vibration acceleration standard Because the original vibration acceleration standard has not been abolished，So the standard is issued by the machinery industry standards appear，It is a reference to the European standard combined with the actual situation and needs of our country，To detect bearings[bearing:bearing（“Bearing”，Japan
2014-12-15 Reading quantity 1600
introduction：In the process of product development and manufacturing，Geometric modeling techniques have been widely used。however，For various reasons，There are still many products that are not made byCADModel description，Designers and manufacturers are faced with physical samples。In order to adapt to the development of advanced manufacturing technology，Theres a way to go，Turn these objects intoCADmodel，Make it availableCAD、CAMAnd other advanced technology for processing。At present，Techniques related to this technique of obtaining a mathematical model of a product from a physical sample，Have developed intoCAD、CAMA relatively independent category in，call“Reverse engineering”（Reverse Eng
2014-12-15 Reading quantity 2885
introduction： one、Precautions for the installation of the reducer 1、Mounting reducer，Attention should be paid to alignment of the transmission center axis，The error shall not be greater than the compensation amount of the coupling used。Good alignment can extend service life，And obtain the ideal transmission efficiency。 2、When installing the transmission on the output shaft，Hammering is not allowed，Assembly fixtures and internal threads at shaft ends are usually used，Press the drive in with bolts，Otherwise, it may cause damage to the internal parts of the reducer。It is best not to use rigid fixed coupling，This type of coupling is improperly installed，Can cause unnecessary external load，In order to
2014-12-15 Reading quantity 2871
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