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introduction： An ancient tool for forced air supply，Mainly used in the smelting industry。The blower was invented by the merchant at the latest、The Western Zhou Dynasty。A vent has been found on the remains of the Western Zhou Dynasty cast copper furnace excavated in Luoyang。According to The Times，The component structure of the blower is also different。In the early days, it was a kind of skin made of cow or horse hide，In ancient times, it was called ligularia external duct,Use the expansion and contraction of the skin to achieve the blast。Initially, it was a single task，The operation situation is shown in the Han Dynasty iron stone carving unearthed in Teng County, Shandong Province(See picture[A ligularia for working with wrought iron on a Han stone(On the left)])。In the Warring States period at the latest，Multiple devices in parallel or in series appear，named“together”，
2015-04-30 Reading quantity 2870
introduction：The machining center is stocked with knives，And can automatically change the tool，Numerically controlled machine tools for multi-step machining of workpieces。 The workpiece after a clamping，The digital control system can control the machine according to different processes，Automatic tool selection and replacement，Automatic change of machine spindle speed、The amount of feed and the movement of the tool relative to the workpiece and other auxiliary functions，Complete the processing of several surfaces of the workpiece in turn。 Machining center due to the concentration of processes and automatic tool change，The workpiece clamping is reduced、Measurement and machine adjustment time，Making the cutting time of the machine tool reach the starting time of the machine tool8O％around(Ordinary machine tools are only15～20
2015-04-30 Reading quantity 2946
introduction：Regulation for maintenance and repair of cycloidal pin gear reducer Maintenance method 5.1 disassembly 5.1.1 routine 5.1.1.1 Remove lubricating oil pump（Vertical reducer only）。 5.1.1.2 Screw the oil plug at the bottom of the boot seat，Drained lubricating oil。 5.1.1.3 unbolt，Separate the base part from the pin gear part。 5.1.1.4 Remove shaft pin sleeve。 5.1.1.5 Remove the stop pad at the front end of the boom，Remove the cycloidal gearⅡ。 5.1.1.6 Remove the boom and its bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）is
2015-04-30 Reading quantity 2964
introduction： hard(soft)plate(slice)Material and free foaming board machine group Hard/soft and free expansion sheet making plant Roller mill Rolling machines Hydraulic element Hydraulic components Hydraulic press Presses,hydraulic Hydraulic power element Hydraulic power units Hydraulic tool Hydraulic power t
2015-04-30 Reading quantity 2929
introduction： Use rolling 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。]Various mechanical devices、The performance of instruments and other market requirements are becoming more stringent，The required conditions for bearings、Performance is also increasingly diverse。In order to be able to from a large number of structures、In size，Select the most suitable bearing，It needs to be studied from various angles。 When selecting bearings
2015-04-29 Reading quantity 1396
introduction：High speed centrifugal separator with tubular drum。Its drum has a smaller diameter﹐Large length﹐High speed of revolution﹐For the treatment of components in low-concentration suspensions and emulsions that are difficult to separate。figure Tubular separator The structure of the separator。The drum is supported by a slender shaft﹐Upper drive﹐A vibration damping device is provided at the lower end of the drum﹐To reduce vibration during activation and shutdown。After the drum reaches the working speed﹐Because the center of gravity of the drum is much lower than the fulcrum of the shaft﹐Automatic alignment during operation﹐Work smoothly。The diameter of the drum is45～150millimeter﹐The ratio of length to diameter is4～8。The emulsion is added to the lower end of the rotation drum﹐The longitudinal rib plate inside the rotating drum
2015-04-29 Reading quantity 2823
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。]The raceway sound and its control method is when the outer spherical bearing is running，A smooth continuous sound made by its rolling body rolling on the raceway surface，It is the unique basic sound that occurs in all bearings。The general bearing sound is the raceway sound plus other sounds。Ball bearing
2015-04-29 Reading quantity 1583
introduction： Magnetic 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。]Applications can be obtained on high-speed spindles100000rpmSpeed of，On the one hand, it can improve the surface processing effect，On the other hand, its service life is far greater than that of traditional bearings。The technology is still in prototype testing, though，But many advantages have been fully demonstrated
2015-04-29 Reading quantity 1551
introduction： KOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedKOYORolling bearings are equipped with retainers。 inKOYOBearing in the processing process，The outer ring of the bearing、Inner ring、How do the roller and cage fit together。]The failure mode has surface contact fatigue、Abrasive wear、Adhesion wear and corrosion wear，They always happenKOYOBearing working surface and surface layer，Obviously the quality of the working surface layer is onKOYOBearing reliability and service life
2015-04-29 Reading quantity 1489
introduction：1．Butter the cylinder pad when installing it Some repairmen install cylinder gaskets，Likes to put a layer of butter on the cylinder pad，It is thought that this will increase the tightness of the engine。Hardly realize，This is not only unhelpful，Rather harmful。As everyone knows，The cylinder pad is an important sealing material between the cylinder block and the head of the automobile engine，It not only requires strict sealing of the high temperature and high pressure gas produced in the cylinder，And must be sealed through the cylinder head and cylinder block with a certain pressure and flow rate of cooling water and oil，Therefore, it is required to remove and install the cylinder pad，Pay special attention to its sealing quality。 If you butter the cylinder pad，
2015-04-29 Reading quantity 1597
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