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introduction： 1）Computer numerical control （Computerized Numerical Control, CNC） The machining function is controlled by computer，Implement numerical control。 2）shaft（Axis）The reference direction along which the parts of the machine tool can move in a straight line or rotate。 3）Machine coordinate system（ Machine Coordinate Systern ）Fixed on the machine tool，Cartesian coordinate system based on machine zero。 4）Machine tool coordinate origin（
2014-12-17 Reading quantity 3004
introduction： Working principle of hydraulic system of electric forklift truck 1、After the above repeated changes，Continuous operation120min，Keep checking everything，And check the oil temperature in the hydraulic transmission housing，Should be60-90℃Within the scope of。Check the cooling system if the oil temperature is too high，disclog、rupture、Whether the oil level is too low or there are bubbles in the system，It is possible that the clutch oil is stuck。 2、Before checking the test run，The oil should be filled up first，Keep the oil level above the lowest level of the oil scale。The oil must be clean，Prevent impurities and water from entering when refueling
2014-12-17 Reading quantity 2983
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。]Excitation can occur for a number of reasons，Mainly for the following types of inspection： 1、Excitation due to changes in the number of loaded rolling elements When a radial load is loaded onKOYOBearing time，The number of rolling elements carrying the load varies slightly during operation，namely：This causes
2014-12-17 Reading quantity 1562
introduction： TIMKENbearing[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。]Change troubleshooting methods frequently TIMKENbearing[bearing:bearing（“
2014-12-17 Reading quantity 1567
introduction：1．Shape memory alloy heat treatment So far，Alloys found to have shape memory effects are20cospecies，But got four hundred practical applicationsNi-TiandCu-Zn-AlSeries alloy。The former has good corrosion resistance。High fatigue life，Suitable for human implants、biont、Aerospace and atomic engineering。The latter is cheap（Only of the former1/10），Good processability，It can be widely used in various industrial fields。 In recent years，The application field of shape memory alloys is expanding。Such as，Made into a jet fighter hydraulic system conduit；Solid state engine using low quality energy；Aerospace engineering
2014-12-16 Reading quantity 2915
introduction： It is very important to control the clutch of the car，But many people dont take it seriously。The following Fengye mall clutch take you to see。 Most would choose a car to meet our high standard of lifestyle，Having this kind of fast transport saves us a lot of things。Learning how to drive a car has naturally become a fashion in our life now，Anyone who is an adult can study for a drivers license，The examination of driving license has gradually increased some difficulty。But no matter what we learn, the first thing we need to learn is our foundation, right，Were learning to drive
2014-12-16 Reading quantity 3050
introduction： principle： DWPJet stream belt drying type，Hot air from the slit or hole beam down or up at the same time to the conveyor belt material；Because the jet gas velocity is high15m/sabove；Therefore, the film of convective heat transfer is extremely thin；High heat transfer coefficient；Fast drying speed。The device is used for non-breathable materials，The upper jet stream still returns to the top；Whats ejected below is still coming back below；recirculation。It has strong permeability to the air stream of aerated material and diffusivity inside the material。The heat source used can be steam、electricity、Hot blast stove and oil fume ventilation。 Apply： DWPJet stream
2014-12-16 Reading quantity 2925
introduction： The advantages and disadvantages of reducer 1、The main feature of turboworm reducer is that it has the function of reverse self-locking，And compared with other several reducer has a larger reduction ratio，Input of turboworm reducer、The output axes are not on the same axis，Not even on the same plane。But it also has its own disadvantages，That is, the transmission efficiency of the turboworm reducer is not high enough，Its not very accurate。 2、The harmonic transmission of harmonic reducer is mainly to transfer motion and power by the controllable elastic deformation of flexible components，Its not very big，And very precise.，Be short of
2014-12-16 Reading quantity 2913
introduction：2.Carbon graphite materials Graphite is a class of non-metallic materials composed of carbon elements。Its carbon3One of several isomers，It belongs to the hexagonal system，The layers are made up of hexagonal rings，Level is parallel to level，It has an ordered overlapping crystal structure。 Graphite according to the source is divided into natural graphite and artificial graphite two kinds。Artificial graphite is made from a carbonaceous material2500℃The above high temperature graphitization treatment。 Carbon graphite generally has good electrical conductivity、heat-resisting、wear-resistant、It is self-lubricating、Good high temperature stability，Strong resistance to chemical corrosion，Thermal conductivity ratio
2014-12-16 Reading quantity 1585
introduction：To check that the installation is correct，An operational check is required。Small machines can be turned by hand，To make sure the rotation is smooth。Check items for foreign bodies、scar、Poor operation due to indentation，Due to poor installation，The torque caused by poor machining of the mounting seat is unstable，Because the clearance is too small、Installation error、Seal friction caused by excessive torque and so on。Power operation can begin if there is no anomaly。 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 phase each other on the shaft
2014-12-16 Reading quantity 1633
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