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introduction：The stamping process can be roughly divided into separation process and forming process（Secondary bending、Deep drawing、shaping）Two broad categories。The separation process is to separate the stamping part and the blank along a certain contour line during the stamping process，At the same time, the quality of the separate section of the stamping parts should also meet certain requirements；The forming process is to make the stamping blank plastic deformation under the condition of no damage，And transformed into the desired finished shape，At the same time, it should also meet the requirements of dimensional tolerance。 According to the temperature at the time of stamping, there are two ways of cold stamping and hot stamping。It depends on the strength of the material、plasticity、thickness、Deformation degree and equipment capacity, etc，Lumber should also be considered
2014-12-23 Reading quantity 2788
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。]The metal corrosion itself accounts for the vast majority，Because of the need for work，Many times this is unavoidable。 Human contact bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。
2014-12-23 Reading quantity 1490
introduction：1、Basic requirement Both the journal and the plain bearing should be made[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。]Even fine contact，There must be a certain coordination gap。 2、Contact Angle Refers to journal and plain bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is fixed in the mechanical transmission process
2014-12-23 Reading quantity 1440
introduction： one、Installation of liquid chromatography column： 1、Structure of liquid chromatography column： a、Empty column by column joint、The column tube and the filter are assembled。 The column joint adopts low dead volume structure，Column fittings are threaded assemblies at both ends，One end is for7/16Inch external thread，On the other end is3／16Inch internal thread(Has been standardized at home and abroad)。7／16Inch external thread with1／4Inch column tube(Φ6.35mm)join，Middle place crush for sealing。3／16Inch internal thread with1／16inches(Φ1.57mm)The connection pipe is connected，middle
2014-12-23 Reading quantity 2778
introduction： Rub a little bit of lubricant between your fingers，If contaminants exist，It can be felt；Or coat the back of your hand with lubricant，Then perform a light seal check。 Its lubricated with oilFAGbearing[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。]After draining the old oil，If you can，Should be refilled
2014-12-23 Reading quantity 1451
introduction： The screw type oil-free dry mechanical vacuum pump is a high-speed rotation of the left screw and the right screw which are meshed and not in contact with each other by synchronous reverse rotation of the gear transmission，The spiral groove is divided into multiple Spaces by the pump housing and the meshing helix、multistage，The gas is in equal tanks（Cylindrical constant pitch）Transmit motion，But without compression，Only the spiral structure at the end of the screw has a compression effect on the gas。A pressure gradient can be formed between the levels of the screw，To spread the pressure difference and improve the compression ratio。The clearance of each part and the speed of the pump have great influence on the performance of the pump。When designing the clearance of each part of the screw，Expansion to consider、Processing and assembly
2014-12-23 Reading quantity 2809
introduction：Maintenance of electric forklift battery Choose an intelligent phased charger，Prevent water loss due to overcharging。Select the rate of electric wheel hub system，Reduce operating current。Charge frequently or maintain a reasonable charging frequency，Its best to plan charging。Like one charge a day or two days a charge。Prevent power loss storage，Loss of storage is the most harmful to batteries。 Battery water refill precautions If anything falls in when the electrolyte is added，Do not fish with metal objects，Use a stick to clip out impurities；Such as using wire or copper wire to fish，The metal molecules will enter the storage under the corrosion of sulfuric acid
2014-12-23 Reading quantity 2803
introduction：The accuracy of the lathe is closely related to the machining quality，To ensure the quality of processing，Enables normal operation of the lathe and reduces wear，The lathe should be properly lubricated in daily production，Maintain machine tools well。 one、Lubrication of lathe Keep the lathe running properly to reduce wear，All friction areas on the lathe should be lubricated。 The lubrication parts are marked with numbers，Except as noted in the picture1、4、5At the lubricating part，required3Calcium base industrial grease(butter)Lubricate outside，All other parts are used40No. Mechanical oil for lubrication。The lubrication of each part of the lathe is as follows： (1)
2014-12-23 Reading quantity 1454
introduction： Linear stepper motor is also called linear stepper motor，It is widely used in equipment machinery，Like machine tool、Engraving machine and so on need to step motor drive，Is a lot of mechanical power drive equipment，Linear stepper motors have great applications in many demanding fields，Now lets do a simple understanding of the linear stepper motor，Especially how it works。 Linear stepping motor，Or called linear stepping motor，First appear in1968year3,402,308Patent No.，Is awarded toWilliamHenschkethe。Ever since，Linear stepper motors in many requirements
2014-12-23 Reading quantity 2812
introduction：Remove lower 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。]At check time，First recordSKFCylindrical 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
2014-12-23 Reading quantity 1435
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