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introduction：Machine tool accessories that use suction to grip workpieces。The most commonly used suction cups are magnetic suction cups，It is usually rectangular or disk shaped。It uses magnetic forces to hold ferromagnetic workpieces tight，For surface grinding machines，It is also sometimes used in milling machines and lathes。Suckers are divided into two categories according to the magnetic source: electromagnetic suckers and permanent magnet suckers。①Electromagnetic chuck：There are multiple coils in the body（figure1[Electromagnetic chuck]）,A direct current is passed through to generate a magnetic field，Suction work；Cut off the power，Field extinction，Loose work。②Permanent magnet chuck：The body is packed with powerful permanent magnets arranged neatly and separated by an insulating plate（figure2[Permanent magnet chuck]）,When the magnet is aligned with the magnet on the sucker panel,
2015-04-06 Reading quantity 2781
introduction：(1)Strict vacuum seal：It is well known that，Vacuum heat treatment of metal parts is carried out in a closed vacuum furnace，therefore，Obtain and maintain the original gas leakage rate of the furnace，Ensure the working vacuum degree of vacuum furnace，It is very important to ensure the quality of vacuum heat treatment of parts。So a key problem of vacuum heat treatment furnace，It is necessary to have a reliable vacuum seal structure。In order to ensure the vacuum performance of the vacuum furnace，A basic principle must be followed in the structure design of vacuum heat treatment furnace，That is, the furnace body should use airtight welding，At the same time, as little or no holes should be opened on the furnace body，Use less or avoid the use of dynamic seal structure，
2015-04-06 Reading quantity 2778
introduction： In accordance withdnvalue/The recommended oil viscosity for temperature is as follows： dnvalue<10000mm.r/min，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。]Operating temperature0-30℃When applicable oil viscosity60mm2/s, 30-60℃When applicable oil37.8℃viscosity115
2015-04-06 Reading quantity 1543
introduction： To achieve fine processing from the mold design、CNC programming and CNC machining start，E.g. Make use ofCAETechnology for fine mold design。Drawing dies are designed with different drawing bars for different feed quantity，Different sections of drawing bars in different parts of the same mold are different，Anti-rebound over drawing treatment and minimum pressure surface design，Can greatly reduce the profile processing、Pliers repair and mold trial hours。Fine processing is mainly reflected in improving the machining accuracy of the mold surface and the degree of processing in place，High stiffness is required、High precision、High speed precision CNC milling machine and high speed cutter，At the same time, we should attach importance to numerical control programming technology。Its processing method
2015-04-06 Reading quantity 2784
introduction： The selection of NC tool and the determination of cutting parameters are important contents in NC machining technology，It not only affects the processing efficiency of CNC machine tools，And directly affect the quality of processing。CAD/CAMDevelopment of technology，It can be used directly in CNC machiningCADThe design data becomes possible，especiallyDNCSystem microcomputer and CNC machine tool connection，Make design、The whole process of process planning and programming is completed on the computer，It is generally not necessary to output special process documents。 At present，A lot ofCAD/CAMAll software packages provide automatic programming capabilities，These software programs are usually written
2015-04-06 Reading quantity 2875
introduction： Wear failure refers to the relative sliding friction between surfaces resulting in continuous wear of the metal on their working surfaces。Constant wear and tear will causeIKObearing[IKObearing:IKONeedle roller bearing with its special internal structure to achieve the mechanical design of small、Light weight。Guideway bearings are based on the high quality given by needle roller bearings，Precision machining with unique mechanical equipment，Evaluate the quality of the latest machines，Products always maintain high performance and high quality level。]Progressive failure of parts，And eventually lead to bearing dimensional accuracy loss and other related problems。grinding
2015-04-06 Reading quantity 1532
introduction： FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Maintenance of、overhaul、And exception handling In order to maintain the bearings original performance in good condition for as long as possible，Must be maintained、overhaul、To prevent accidents before they happen，Ensure the reliability of operation，Increase productivity、economy。Maintain operating standards best suited to the operating conditions of the machinery，Conduct regularly。The contents include，Monitoring operation、Replace or replace lubricant、Periodic disassembly inspection。 F
2015-04-06 Reading quantity 1527
introduction：F face to face dimension,Face distance dimension facsimile seismograph,Facsimile seismograph factory communication,Factory communication factory information protocol,Factory information protocol Fahrenheit,Fahrenheit Fahrenheit temperature scale,The Fahrenheit temperature scale fail safe,Conversion safety fail
2015-04-06 Reading quantity 2790
introduction：（1）Low cost。Using the extraction technology，The structure of pin ring planetary reducer is simplified，Identical power，Pin rings with different transmission ratios have the same structure，Products can be mass produced，At the same time, the processing technology of key parts is good，No special equipment or skill is required，Application of general purpose locomotive can be processed and manufactured，Low manufacturing cost。 （2）Smooth transmission，Low noise。The mass of the pin ring is small，Boom 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 the other parts are on the shaft each other
2015-04-06 Reading quantity 2886
introduction：Truck crane telescopic cylinder piston rod(pole)The grinding is easy to produce waste products，Based on our experience，There are the following anti-waste measures。 1.Carefully measure the amount of remaining wear at each point of the workpiece Should bend according to the workpiece、runout、Data such as dislocation and tool mark depth determine whether grinding is possible。 (1)Do not exceed the amount of remaining grinding0.50mmThe deviation can be carefully measured by the operator、warping、malposition、Knife marks and other values。The retention of wear is less than0.20mmThe workpiece must be asked for the consent of the relevant personnel before grinding。 (2)If the deflection or bending amount exceeds one-third of the grinding amount, the part should be straightened before grinding
2015-04-06 Reading quantity 1533
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