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introduction： In the design of the blanking die,Reasonable selection of mold gap,It is to ensure the normal operation of the mold、Improve the quality of the film、A key factor in extending mold life。The ideal gap should be when the sheet metal is blanked and broken,The cracks produced by the cutting edge of the die are in a straight line,Otherwise, the edge of the chip will appear not allowed burrs,Make the cutting edge bond seriously,Acceleration of wear,And then affect the life of the mold。therefore,How to choose a reasonable die gap,It is a problem that cannot be ignored in mold design。 Under normal circumstances,In mold design, the gap is generally selected according to the gap value recommended by the design manual。Such as
2015-01-10 Reading quantity 2873
introduction：A gas compressor is a power device that converts mechanical energy into gas pressure energy，Often used in pneumatic tools to provide gas power，In petrochemical、Drilling and production、Pressure oxygen is also commonly used in metallurgy and other industries、hydrogen、ammonia、Natural gas、Coke oven gas、Inert gas and other media。 Compressors can be divided into low pressure compressors according to different exhaust pressure—Exhaust pressure less than1.0MPa；Medium pressure compressor—Exhaust pressure1.0MPa～10MPa；High pressure compressor—Exhaust pressure10MPa～100MPa；Ultra-high pressure compressor—Exhaust pressure greater than100MPaAnd so on。The low pressure compressor is a single stage，Medium voltage
2015-01-10 Reading quantity 2798
introduction：inabearing[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。]Uneven pits appear on the contact surface between the raceway and the roller，It indicates that the four row cylindrical roller bearings have plastic deformation。The reason is that the bearing is under a large static load or impact load，The local stress on the working surface exceeds the yield limit of the material，This happens at low speeds
2015-01-10 Reading quantity 1543
introduction：shaft bearing the often with bian Dont party method Discriminating 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。]Common methods of quality：Whether the outer packing is clear：In general，The factory brands have their own specialized designers for external packaging design，And arrange the production of factories with satisfactory production conditions，therefore
2015-01-10 Reading quantity 1541
introduction：The following introduces you to several kinds of discriminating 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。]Common methods of quality： Whether the outer packing is clear：In general，The factory brands have their own specialized designers for external packaging design，And arrange the production of factories with satisfactory production conditions，Therefore, the packaging is not from lines to color blocks
2015-01-10 Reading quantity 1551
introduction：rollNSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]Its a precision part.，Its use must also be carried out with corresponding care。No matter how high performance bearings are used，If used improperly，Be not
2015-01-10 Reading quantity 1450
introduction：one、Milling machine （one）Types of milling machines、Model and its meaning The main milling machines are vertical milling machines、Horizontal milling machine and gantry milling machine, etc，To adapt to different processing needs。Vertical milling machine means that the main shaft of the milling head is perpendicular to the working table；Horizontal milling machine means that the main shaft of the milling head is parallel to the surface of the table。 The model of the milling machine is shown below： Such asXQ6225，XPresentation milling machine，QStands for portable milling machine，6Denotes a horizontal milling machine，2Universal lifting table milling machine，25Representing the width of the table1/10(250mm)。Milling can be achieved
2015-01-10 Reading quantity 2940
introduction：1At present, the hydraulic impactor bucket produced by many manufacturers in the world has the function of adjusting the impact energy，To adapt to the crushing requirements of rocks with different block size and hardness。Different from general hydraulic machinery，The load of the hydraulic impactor is the inertial force of the piston movement。therefore，Change the flow rate provided to the hydraulic impactor，It can change the working pressure and impact energy of the hydraulic impactor。However, since the impact power is proportional to the cube of the flow rate，Inversely proportional to piston stroke，To ensure the normal operation of the motor of the hydraulic system，While changing the flow，Generally, the hydraulic impactor is changed by changing the piston motion stroke
2015-01-10 Reading quantity 2800
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。]Poor choice，A large part of the reason is that thrust bearings are not used when there is a large axial load or can withstand a large diameter、Bearing support structure of axial combined load，It is not appropriate to use only cylindrical roller bearings without cages。SKFbearing[SKFbearing:SKFThe full name is“Sve
2015-01-10 Reading quantity 1450
introduction：Crane reducers are used in addition to crane mechanisms，It can also be used in mines、metallurgy、Chemical engineering、Building materials、Light industry and other mechanical transmission。In addition to the power meter given by crane working class for most reducer，A power meter for continuous operation is also given。 Lifting reducer selection principle 1) Crane reducer in the selection of the first choice should meet the requirements of mechanical strength，That is, the power required by the working machinery should be less than or equal to the allowable power of the input shaft of the reducer through the conversion。The different mechanisms used for the crane should be appropriately multiplied by the coefficient。Different job levels should be converted intoM5(orM6)The power value of the working level，again
2015-01-10 Reading quantity 2898
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