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。]Type refers to the air cooled radiator fan usedTIMKENBearing profile。In mechanical engineering,TIMKENThere are many types of bearings,But there are only so many kinds of radiator products used:Use sliding friction sleevesTIMKENBearings and use rollers
2015-03-13 Reading quantity 1449
introduction:⒈ aim: Standardize the working method of the up and down pattern,Improve mold efficiency,Prevent accidents。 ⒉ Radius: Suitable for upper and lower die operation in injection molding department。 ⒊ Duty: The upper and lower mold technician performs mold drop according to this operation guide、Each link of the mold operation。 ⒋ Drop mode operation procedure: 4.1Before stopping the mold,First pull the mold to the machine position,And get the tools you need、Materials。 4.2 Check whether the crane screws are loose,Whether the ring is strong。 4.3 Turn off the water,resale5~10bei,Make the mold hot,Avoid rust,The use of frozen water mold should be paid more attention。
2015-03-13 Reading quantity 2898
introduction:The ratio of the centrifugal force on the suspension or emulsion in the centrifugal drum to its gravity in the centrifugal force field,Thats the ratio of centrifugal acceleration to gravitational acceleration。Separation factor toFexpression: [0180-01]ShizhongRIs the radius of the position of the separated material in the drum(meter);Is the rotational angular velocity of the drum(radian/seconds);Acceleration of gravity(9.81meter/seconds();Is the rotating drum speed(turn/points);For the quality of the material inside the drum(kilogram)。Separation factor is the main index to measure the performance of centrifugal separator。Fbigger,The greater the force of centrifugal separation,The separation performance of the centrifugal separator is also increasing
2015-03-13 Reading quantity 2796
introduction:1、Abide by《General operating rules for casting equipment》Relevant provisions。 2、Check that the handling handles are all in the stationary position,Whether the travel switch and the iron touch position are correct。If not in a stationary position,It must be placed in a stationary position;If the position is incorrect,Must be corrected。 3、Check whether the abrasion of the scraper is serious,Is the location appropriate?。In case of severe wear,Should be replaced;In discomfort,Subject to adjustment。 4、Start with a running test,Then run empty3-5minutes,And check: a、Whether the movement of the transmission system and balance wheel is balanced; b、Whether the opening and closing of the sand door are flexible;Just make sure everythings okay,Be within easy reach
2015-03-13 Reading quantity 2791
introduction:1. The CNC machine should be inspected comprehensively and carefully before starting,The content includes the operation panel、Guideway surface、dog、tailstock、Tool rest、cutter,It can be operated only after it is recognized。 2. After the CNC machine is powered on,Check each switch、Buttons and keys are normal、nimble、The machine has no abnormal phenomenon。 3. After program input,Code should be checked carefully、address、Numerical value、sign、The decimal point is carefully checked。 4. Correctly measure and calculate the workpiece coordinate system。The results were checked 5. Input job coordinate system,Coordinate coordinate。Coordinate value、sign、The decimal point is carried out carefully
2015-03-13 Reading quantity 1559
introduction:Macro instruction andRParameter programming,It is a key technology of numerical control programming technology。Make use ofSIEMENS810DsystematicRParameters and macros“@”It can solve the generality problem of CNC program for bevel gear parts。adoptRParameters and macros,It not only makes the numerical control program universal、flexibility,The procedure is simplified to the maximum extent,It also greatly improves programming efficiency and processing reliability,It provides reference for NC programming of some special and similar parts。 one、introduction In the actual production of the factory,There are often parts with similar shapes that need to be machined。Like us
2015-03-13 Reading quantity 2807
introduction: (1)Principle of NC machining When we use machine tools to process parts,It is usually necessary to control the various movements of the machine tool,One is to control the sequence of actions,The second is to control the displacement of each moving part of the machine tool。When using ordinary machine tools,This kind of driving、Pull up、feed、commutation、Operations such as spindle speed change and switching cutting fluid are directly controlled by manual control。When using automatic machine tools and copying machine tools,The above operation and motion parameters are through the designed CAM、Devices such as molds and stoppers are controlled in the form of analog quantities,They can process more complex parts,And have a certain flexibility and pass
2015-03-13 Reading quantity 1475
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。]The surface of the raceway shall be polished without corrugation。When surface roughness>0.2μmwhen,The bearing can not give full play to its bearing capacity。 The bearing clearance of the directly supported bearing depends on the diameter tolerance of the shaft and the hole。。 And direct branch
2015-03-13 Reading quantity 1605
introduction:Abstract:The preparation of ultrapure water is usually only based on resistivity for water quality monitoring。This preparation method requires several steps。When local water is purified,It must be pre-treated before final refining。 The initial steps of purification includeDI(Deion technique)perhapsRO(Reverse osmosis)/EDI(Continuous current deion technique)combination。Although ultra-pure water with higher resistivity can be obtained through both techniques,But when the quality of ultra-pure water can be more accurately monitoredTOC(Total organic carbon)Also be included when examining indicators,Ultrapure water obtained by different preparation techniques
2015-03-13 Reading quantity 2912
introduction: Cryogenic equipment for separating single-component gaseous and liquid products from multi-component feedstock gas。Multicomponent feedstock gas usually refers to air﹑Natural gas﹑Coke oven gas﹑Water gas﹑Synthetic ammonia release gas and various cracking gas, etc。Common gas separation equipment is air separation equipment﹑Natural gas separation plant﹑Synthetic ammonia release gas separation equipment﹐And coke oven gas﹑Water and gas separation equipment and rare gas extraction equipment。 Brief history Development of gas separation equipment﹐Derive from1903Germany made the first commercial oxygen generator began﹐Subsequently, other raw gas separation equipment appeared。1921years﹐American establishment
2015-03-13 Reading quantity 2831