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introduction：1．Install the workpiece in a double center or one clip at a time Install one clip at a time：The outer circle of one end of the shaft is clamped with a chuck，The installation of the workpiece with one end of the tail seat center against the center hole。This installation method can improve the clamping stiffness of the shaft，At this time, the outer circle of the axis and the central hole are used as the positioning base plane，It is often used in long axis machining and rough turning machining。 Double center mounted：Drill center holes at both ends of the solid shaft，A cone plug or cone sleeve mandrel with a central hole is installed at both ends of the hollow shaft，Workpieces are installed with center holes at both ends of the spindle and tailstock center shaft of the lathe。 2．Workpiece clamping and alignment with center frame When machining the workpiece with the center frame
2015-01-11 Reading quantity 1458
introduction： Planar sheet structure with thickness much less than the minimum planar size。Board for short﹐lamina﹑Medium and thick plate。Sheet refers to thickness(t)The ratio to the minimum plane size of the plate is less than0.125The board of。Greater than0.125The board of﹐Generally, the deformation caused by the transverse shear is of the same order as the bending deformation﹐Therefore, the transverse shear effect must be taken into account in the analysis﹐It is called medium-thick plate。In hydraulic engineering﹐Tablet widely used﹐Like in a sluice﹑Ship lock﹑dock﹑Plane gates and other combined structures﹐It is not...
2015-01-11 Reading quantity 2852
introduction：Were using micro 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。]when，Noise is often heard inside the raceway，The reason was previously unknown to us，To understand thisIKOBearing knowledge Through this experiment we come to a conclusion，Lets help you analyze the reasons。 a.noise、Vibration with randomness
2015-01-11 Reading quantity 1592
introduction：ziyouduan Free forging open die forging Use simple tools and open molds（Anvil block）A method of forging and forming metal。Free forging time，Only part of the surface of the metal is in contact with the tool or anvil block，The rest of the surface is free deformation。Free forging uses common dies and tools，Great flexibility，Low cost，The production preparation cycle is short，Suitable for single piece、Small batch production。But the productivity of free forging is low，The labor intensity of workers is high，Poor accuracy of forging，Large processing allowance，Therefore, the proportion of free forgings in the total number of forgings varies with the production
2015-01-11 Reading quantity 2849
introduction：Shanghai YinkkThere are many levels of module accuracy，The following iskkPrecision level table of the module。
2015-01-11 Reading quantity 20843
introduction： Worm gear reducer is the most common type of reducer，It has great advantages in structure and transmission ratio，In particular, the self-locking function can be used under certain conditions，Therefore, it is very popular with users。There are four common problems with worm gear reducer，Respectively, the heat and oil leakage of the reducer、Worm gear wear of reducer、Reducer transmission pinion wear and reducer 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，To reduce
2015-01-11 Reading quantity 2950
introduction： 1． Can you provide the original certificate of quality guarantee？ 2． The color of the package is light green，Anti-counterfeiting labels have a fixed format，Just give us all the numbers on the labelSKFThe company can 3． The wooden box packing must be original，Cannot be disassembled，The box is fumigated by customs，Box strong and neat，8A horn of iron cant paddle 4． 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 are on the shaft
2015-01-11 Reading quantity 1486
introduction：forty-one：When the cone is rolled，Just adjust the center of the upper axis to what position，At the same time, the axis of the roller shaft always coincides with the bus bar of the fan-shaped blank，You can roll it into a cone？ a：Adjust to tilt position。 forty-two：Rolling coning time，Increase the friction on what edge of the blank？Make what move in slower than what move in？ a：Increase the friction of the small mouth of the blank，Make the small mouth move in slower than the big mouth move in。 forty-three：There are many forms of shaft with a core bend，With a round head，Its pointy，Hook and what？ a：And unidirectional joint type
2015-01-11 Reading quantity 2809
introduction： Material discoloration is usually due to burning or degradation, among other reasons。 (1)Material problem： ①Material contamination；②Poor drying of material；③There are too many volatiles in the material；④Material degradation；⑤Colorant decomposition；⑥Additive decomposition。 (2)Equipment problem： ①Equipment is not clean；②The material is not clean and dry；③The ambient air is not clean，Colorants and so on float in the air，Deposited on the hopper and other parts；④The thermocouple failed；⑤The temperature control system failed；⑥Resistance heater(Or far-infrared heating device)breakdown；⑦There is a barrier in the barrel
2015-01-11 Reading quantity 2892
introduction： 301 GB/T 9215-1988 Carbide taper pointed rotary file Conical pointed-nose hardmetal burrs 302 GB/T 9216-1988 Carbide inverted taper rotary file Inverted cone hardmetal burrs 303 GB/T 9217-1988 Carbide rotary file technical conditions Hardmetal burrs technica
2015-01-11 Reading quantity 2860
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