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introduction：1 lead said DeltaEHSeries programmable controller is produced by Taiwan Delta Electronics Company，。It has high reliability、Easy to expand、Strong computing ability、Good real-time performance、Easy programming and other features。At present, the domestic hydropower speed control system generally adopts foreign smallPLC、PCCandIPCAnd other industrial control products，But itPLChigh...
2016-02-29 Reading quantity 1757
introduction：The drive motor of metal cutting machine tool includes feed servo motor and spindle servo motor。Machinery manufacturers are worried about insufficient cutting force when purchasing motors，Larger motors are often chosen，This will not only increase the manufacturing cost of the machine tool，And make it bigger，The structure layout is not compact enough。This paper illustrates how to choose the best specification of motor by an example...
2016-03-04 Reading quantity 1774
introduction：Main functions and characteristics: Unique overload capability、 150%60 seconds（For special industries） High reliability and low energy loss（Latest generation IGBT module） Output frequency 0.1 － 120Hz 、Automatic voltage regulation output 16 Segment can be preset with speed 15 Segment can run program built-in PID Feedback control 8.5KW － 75KW Built-in DC reactor built-in 2 A fully insulated and independent high current（ 1A ）Analog input，And can be synthesized operations Built-in serial communication interface RS － 485 （Baud rate can reach 38400 ） own I/O The terminals are insulated and have superior immunity configurable V/F Curve and 3 power V/F curve Double ground terminals and complete protection Electricity price calculation function
2017-06-30 Reading quantity 222
introduction：1、Suitable viscosity and good viscosity-temperature characteristics In order to make the machine tool spindle temperature is not too high and make the machine tool thermal deformation，Affect the machining accuracy or make the bearing poor lubrication，Should be based on spindle bearing structure、Speed and bearing clearance, choose the appropriate temperature of the lubricating oil and require it to have good viscosive-temperature characteristics，Prevent large changes in spindle operating temperature and ambient temperature，The change of viscosity is too large and affects its lubrication performance。 2、Good lubricity In order to maintain a uniform oil film between the spindle and the bearing contact surface，In addition, the oil film will not be damaged when the spindle starts or stops moving to produce impact load，Maintaining good lubrication properties reduces friction and friction heat、Reduce the temperature rise of the main shaft、The role of ensuring machining accuracy，It is required to have good lubrication
2017-05-11 Reading quantity 292
introduction： one、Vibrating pairNTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 It is produced by high-precision machining and testing technology in micrometers，From the requirements of both high performance and low cost of ordinary household appliances，Aerospace rockets that can still perform their bearing functions normally in harsh working environments are required， NTN Bearings in all walks of life、Lay the foundation for the development of machinery for various purposes]Influence of。 In the usual use，Vibrating pairNTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 micron
2015-02-19 Reading quantity 1734
introduction：Flow 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。]If used in harsh environments，NTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 It is produced by high-precision machining and testing technology in micrometers，From the requirements of both high performance and low cost of ordinary household appliances，until
2015-02-21 Reading quantity 1695
introduction： Generally speaking，NTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 It is produced by high-precision machining and testing technology in micrometers，From the requirements of both high performance and low cost of ordinary household appliances，Aerospace rockets that can still perform their bearing functions normally in harsh working environments are required， NTN Bearings in all walks of life、Lay the foundation for the development of machinery for various purposes]The rolling bearing itself does not produce noise。Commonly felt“Thin wall bearing noise”In fact, the bearing directly or indirectly produces a sound effect of vibration with the surrounding structure。 this
2015-02-23 Reading quantity 1628
introduction：first，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。]Size limitation。usualNTNImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Can be
2015-02-23 Reading quantity 1735
introduction：On the transmissionNTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 It is produced by high-precision machining and testing technology in micrometers，From the requirements of both high performance and low cost of ordinary household appliances，Aerospace rockets that can still perform their bearing functions normally in harsh working environments are required， NTN Bearings in all walks of life、Lay the foundation for the development of machinery for various purposes]Fault phenomenon of：The sound of transmission gears meshing、NTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 It is produced by high-precision machining and testing technology in micrometers，From the requirements of both high performance and low cost of ordinary household appliances，Aerospace rockets that can still perform their bearing functions normally in harsh working environments are required， NTN Bearings in all walks of life、Lay the foundation for the development of machinery for various purposes]The r
2015-02-25 Reading quantity 1580
introduction：It can also happen in the wrong wayNTNbearing[NTNbearing:NTN A variety of bearing products，therefore 0.01 It is produced by high-precision machining and testing technology in micrometers，From the requirements of both high performance and low cost of ordinary household appliances，Aerospace rockets that can still perform their bearing functions normally in harsh working environments are required， NTN Bearings in all walks of life、Lay the foundation for the development of machinery for various purposes]fever。The wear of parts in motion can be reduced by lubrication，Ensure press accuracy，Reduce energy consumption。Lubricate by thin oil、Rich oil lubrication, etc。Thin oil lubrication：The advantage is that the internal friction coefficient is small，So it takes less energy to overcome friction，Thin oil flows well，Easy access to the friction surface of each lubrication point，It has good cooling effect，And can adhere to the friction surface of impurities and metal particles due to grinding away。The disadvantage is that
2015-02-25 Reading quantity 1623
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