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introduction：In order to facilitate readers to read the relevant CNC information and foreign CNC products related manuals，The commonly used NC vocabulary and its English corresponding words are selected here，The selected CNC terminology mainly refers to international standardsISO 2806And national standards of the Peoples Republic of ChinaGB 8129—1987 As well as some new CNC vocabulary in recent years。 1）Computer numerical control （Computerized Numerical Control, CNC） The machining function is controlled by computer，Implement numerical control。 2）shaft（Axis）Machine tool
2015-02-06 Reading quantity 2879
introduction：Characteristics of commonly used plastic materials Plastic name：GPPS(Universal hard glue) yquadrate，thin roundness，thin（crystallinity） Common plastic material names and characteristics Name advantages and disadvantages eboniteGPPSpolystyrene。Colorless and transparent。Good electrical insulation。Good liquidity good overheating stability Shrinkage little water absorption low light transmittance up to90%Refractive index up to1.59The finished product can be silk-screened，Pad printing，Hot print flying aluminum，electroplate，Oil injection。。。。。Flat price。friability，inflammable，Susceptible to aging, yellowing and embrittlement in response to UV light. Alcohol resistant，Gasoline surface cracks are easy to vacuum Plastic materialization
2015-02-06 Reading quantity 2869
introduction： 1.The contact Angle is perpendicular to the 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。]The plane of the axis line(Radial plane)The resultant action line with the roller driven by the bearing ring or washer(Nominal line of action)The Angle between。 2.intra-ball(Outside diameter)Bearing inside a row of balls(outside)The diameter of the cylinder。
2015-02-06 Reading quantity 1540
introduction：1、Fatigue spalling Fatigue spalling is 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。]The work surface is scaly due to rolling fatigue。 Bearing working hours，Rolling element and inner ring（Or ring）The load is not constant，It changes over and over again with the running of the bearing。This load is an alternating load；Due to rolling
2015-02-06 Reading quantity 1454
introduction：An elastic diaphragm is used as a cut-off valve for opening, closing and sealing parts(Sight valve)。figure Typical structure of diaphragm valve Typical structure of diaphragm valve。Body is ridge type﹐The roof ridge and diaphragm form a sealing pair。Peridiaphragm fixation﹐It divides the valve chamber into two parts that are not interconnected。Below the diaphragm is a fluid channel。Valve clack﹑Valve stem﹑The valve cover and other parts are located on the upper part of the diaphragm﹐Isolation from fluid﹐Resistant to fluid corrosion﹐At the same time, it can prevent impurities such as rust from contaminating the fluid。Diaphragm valves do not require stuffing boxes﹐There are no stem seal issues。The body is usually lined with rubber or enamel﹐There are also integral use of corrosion-resistant metal or non-metallic materials(Like stainless steel
2015-02-06 Reading quantity 2791
introduction：bizhuanshu Specific revolution specific speed Water turbine、An important parameter commonly used in turbine machinery such as power pump and fan，Also known as specific speed。The concept of specific revolution was first used in the study of water turbines，Later, it is widely used in power pumps and ventilators。Because countries use different units of measurement，The specific revolutions defined and calculated are also different。table1 [Definition of specific revolutions]Represents the definition of Chinese comparative revolutions。Speed is shown in the table（turn／points）;As the flow（meter／seconds）；NAs power（kilowatt）；HOf the head of a turbine or pump
2015-02-06 Reading quantity 2803
introduction：Reducer in recent years in our countrys history of development，It is widely used in various fields of national economy and national defense industry。Product deceleration from the initial single cycloidal pin wheel，On the five categories of products today cycloidal reducer，Continuously variable transmission，Gear reducer，Worm gear reducer，Electric roller development。 According to preliminary statistics，The industry with a large amount of reducer is：Electrical machinery，Metallurgical machinery，Environmental protection machinery，Electronic appliance，Road building machinery，Chemical machinery，Food machinery，Light industrial machinery，Mining machinery，Transport machinery，Construction machinery，Building materials machinery，Cement machinery，Rubber machinery，Hydraulic machinery，Petroleum machinery，These trades transport
2015-02-06 Reading quantity 2786
introduction： one、Current situation and prospect of natural gas industry in China With Chinas long-term rapid economic growth, the demand for energy，Peoples requirements for the quality of life and the ecological environment are also increasing。West-east gas transmission、The century-old projects such as the Sichuan gas transmission to the East and the introduction of Russian natural gas show the high quality of natural gas、Clean and environmental protection and other characteristics of important energy，Is being taken seriously by our government as never before。China Gas has set up 46 joint ventures with natural gas franchises in more than a dozen provinces along the West-east gas transmission and Sichuan-East gas transmission routes，outinvest50A natural gas pipeline project，And this number
2015-02-06 Reading quantity 2893
introduction：A recent customer report says yesTIMKENbearing[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 temperature is too high.，Our technician saidTIMKENImported 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，ikoshaft
2015-02-06 Reading quantity 1461
introduction： 1、Working principle The fully automatic sodium ion exchanger is a Votek company using the latest technology in the United States in the 1990s combined with the actual water quality in China，Turn AmericaFLECKandAutotrolCompany original program controller and centralized control valve and the United StatesKineticoCompany no power water control valve organic composition of automatic softening water system。Program controller according to pre-set control program(The control mode is time control or flow control)Centralizing control
2015-02-06 Reading quantity 2799
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