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introduction：gunzi zhoucheng Roller 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。] roller bearing Short cylinder、A rolling bearing with a cone or waist drum roller as a rolling body。Roller bearings are mainly centripetal short cylindrical rollers、Double row centripetal spherical roller、Tapered rollers and thrust
2015-01-11 Reading quantity 2861
introduction：English abbreviation Full English name Full Chinese name ABA Acrylonitrile-butadiene-acrylate acrylonitrile/butadiene/Acrylate copolymer ABS Acrylonitrile-butadiene-styrene acrylonitrile/butadiene/Styrene copolymer AES Acrylonitrile-ethylene-styrene acrylonitrile/ethene/Styrene copolymer AMMA Acrylonitrile/methy
2015-01-11 Reading quantity 2904
introduction：one、Device function： 1、Soybeans are extremely nutritious，Its high energy，An ideal nutrient source for high protein。Soy protein38%，fat19%,Amino acid，Fatty acid、lecithin、vitamin、Mineral matter，It is a relatively perfect coordination group for human needs of nutrients。At the same time, soybean has the effect of preventing and treating diseases。Therefore, all countries in the world attach great importance to the production and application of soybean flour。 2、Because this complete set of equipment has virus-free function，Soybeans contain harmful substances（antinutrient）,Poisoning people and causing side effects,limited
2015-01-11 Reading quantity 2908
introduction： When and how much oil should be changed。If the oil change is too little，NSKbearing[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 will be scrapped prematurely；If the oil is changed too much，NSKBearings will get into trouble or long-term harm the power coil and coil。 The lubrication interval has a simple premise：inNSK
2015-01-11 Reading quantity 1475
introduction：High-speed CNC machining is gradually replacing the processing of ordinary CNC machine tools，Become the mainstream of numerical control technology development。This paper discusses the basic requirements of high speed NC machining for NC system，introducedSKY2003NSome basic indexes of a type of network high-speed numerical control system，Finally, the difference between ordinary NC machining and high speed NC machining is compared。 1、introduction The rapid development of high speed machining technology has been widely concerned by academia and industry，Now high-speed CNC machine tools are gradually replacing ordinary CNC machine tools，Become the mainstream of numerical control technology development。High is generally mentioned when discussing high-speed CNC machine tools
2015-01-11 Reading quantity 2898
introduction： one、Installation surface and installation site requirements ifSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Iron filings inside、burr、Foreign bodies such as dust enter，Will makeSKFbearing[SKFbearing:SKFThe full name is“Svenska Kulla
2015-01-11 Reading quantity 1554
introduction：Black body and gray body： An idealized object for the study of radiative heat transfer。The blackbody is able to absorb all the energy radiated towards it﹐All kinds of objects at the same temperature have the largest energy radiated from the black body。All objects in nature absorb, to varying degrees, the radiative energy projected on them﹑Reflection and transmission power。Suppose the total energy projected on the surface of the object isQ ﹐Some of that energyQ 1After entering the surface, it is absorbed by the object﹐Another part of energyQ 2Reflected by objects﹐Remaining energyQ 3Penetrating object。thereupon﹐According to the law of conservation of energy Shizhong Q 1/Q ﹑Q 2/Q
2015-01-11 Reading quantity 2861
introduction：There are the following types of sliding blocks commonly used in hardware molds﹕ 1 Suitable for small and medium-sized sliders﹐Limit the position by relying on the vertical side of the slider(As shown in the figure1)﹔ 2 Suitable for large sliders processed in a shared manner﹐The limit block is in the form of an incoming block(As shown in the figure2)﹔ 3 Suitable for large and medium-sized sliders requiring fast loading and unloading﹐Rely on the limit plate at the bottom of the slider to limit the position(As shown in the figure3)﹔ 4 Suitable for situations where the slider needs to be reset before contacting the material﹐By the action of the top pin in the slide block﹐Reset the slider first﹐Ejector pin length is usually7mm﹐Surface face2.0mm﹐Choose red flat wire spring。(As shown in the figure4) 5 apply
2015-01-11 Reading quantity 2963
introduction：Human resource organizations and human resource staff are increasingly becoming important roles in modern enterprises，It has to do with the nature of management，It is also inseparable from the importance of human resources work。 However, the current situation shows that，The human resources work of many enterprises still only stays in the stage of personnel management，Or human resources work is not playing its role，For the company。Human resources staff are burdened with a multitude of daily chores，Gradually, they forget the role they should play。 In fact，What role should human resources play？Or human capital
2015-01-11 Reading quantity 2931
introduction： Heat exchangers that use air to cool hot fluids。The heat fluid in the tube is exchanged with the air outside the tube through the tube wall and fin，The air used is usually supplied by a fan。Air coolers can be used for cooling or condensation,Be widely used in:Oil refining、Condensation of steam on top of petrochemical tower；Returned oil、Cooling of tower bottom oil；Cooling of various reaction products；Cooling of circulating gas and condensation of power station turbine exhaust。Working pressure can be reached69mpa。But power consumption、It is noisy and occupies a large area，The cooling effect is greatly affected by climate change。 structure
2015-01-11 Reading quantity 2828
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