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introduction： Koma clutch disc：Comar produces composite materials，With different labels and performance； Copper substrate：Alloy metal friction materials based on copper，With high hardness，Good heat dissipation advantage，But easy to wear the clutch pressure disc； Composite aramid yarn：The full name of aramid is aromatic polyamide fiber，Its a high intensity、High modulus、Organic synthetic materials with low density and high wear resistance，And it has stable chemical properties。I974years，American trade federationFTC(U．SFederalTradeCommission)
2015-01-06 Reading quantity 2802
introduction： A type of grinding machine that grinds a workpiece flat or formed surface。The main types are horizontal shaft table﹑Horizontal shaft round table﹑Vertical axis rectangular platform﹑Vertical shaft round table and various special surface grinding machines。 Horizontal shaft rectangular table surface grinding machine(figure1 Horizontal shaft rectangular table surface grinding machine)﹕The workpiece is held or clamped on the work table by a rectangular electromagnetic table﹐And make longitudinal reciprocating motion。The grinding wheel holder can follow the dovetail guide rail of the slide seat(See machine guide)Make transverse intermittent feed motion(Sighting machine)﹐The slide seat can be used for vertical intermittent feed movement along the guide rail of the column﹐Use the wheel to grind the workpiece around﹐grinding
2015-01-06 Reading quantity 2817
introduction：KOYOBearing in the process of use，Many people focus only on the big questions。I didnt see any minor problems。Often because of these small problems caused by thrust ball 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。]Damage can even end life。 First, the filtration effect of the air filter is poor or the intake system is not sealed well，To check the intake system each
2015-01-06 Reading quantity 1473
introduction：introduction In recent years，Constantly review the stamping die grinding engineering automation，The tester grinding machine with automatic mechanical technology has been developed。The automatic grinding of the surface and surface of the mold has been applied，The characteristic lines of the inner plate mold are very smallRPart necessary for grinding，It has not been put into practice for the following reasons。 Automatics teach poor maneuverability Long grinding time Poor grinding quality The companys mechanical and electrical、Machine department for direct use5Shaft automatic machinery and mold product shapeCADData grindingCAMConstruction methods were investigated，And discuss minimalR
2015-01-06 Reading quantity 2806
introduction： In the rolling process，Due to the influence of various factors，The longitudinal extension of the strip in the roll gap is often unevenly distributed along the width direction。The result of the non-uniform extension along the width leads to the existence of non-uniform longitudinal residual stress in the rolled strip along the width direction，When a certain critical value is exceeded，The strip will produce waves and warping after rolling。 Instability problem of cold rolled wide sheet，Two-dimensional modeling can be carried out according to the form of plane stress，The thickness of the sheet is determined by the shell elementshell63Is described by the real constant。 Artificially cut two ends out of the cold rolled strip
2015-01-06 Reading quantity 2899
introduction： Act 1 Plastic formability Plastic is the main component of high molecular weight synthetic resin，Under certain conditions（Such as temperature、Pressure etc）A material that can be molded into a certain shape and retains its shape at room temperature。 The properties of plastics according to the surface after heating，Can be divided into thermosetting plastics and thermoplastic plastics two categories。The former is characterized by a certain temperature，After a certain amount of time heating、After pressurizing or adding hardener，It hardens by chemical reaction。The chemical structure of the hardened plastic changes、Hard texture、Insoluble in solvent、Heat no longer softens，If the temperature is too high
2015-01-06 Reading quantity 2805
introduction：dengxiao zhiliang Equivalent mass equivalent mass An imaginary mass concentrated at a selected point of a mechanical component。The machine is in operation，Its kinetic energy is equal to the sum of all its components。The equivalent moment of inertia is an imaginary moment of inertia given to a member of a machine，In the process of mechanical operation，Its kinetic energy is equal to the sum of the actual kinetic energy of all the components in the machine。The application of this concept can simplify the mechanical dynamics of single-degree-of-freedom mechanisms，That is, the quality of each component、The moment of inertia is reduced to the equivalent component（Equivalent effect）with
2015-01-06 Reading quantity 2795
introduction：（one）Types of carburizing method According to the use of carburizing agent can be divided into the following three categories： （1）Solid carburizing method：Carburizing with charcoal as the main agent。 （2）Liquid carburizing method：With sodium cyanide（NaCN）Carburizing method of primary agent。 （3）Gas carburizing method：By natural gas、propane、Carburizing method of butane and other gas as main agent。 （two）Comparison of carburizing methods （1）Solid carburizing method forte： （a）Cheap equipment，Simple operation，Not highly technical。 （b）Heating source，Available electricity、gas、Fuel oil。 （c）All sizes of workpieces are suitable，Especially for large
2015-01-06 Reading quantity 1464
introduction：Hard turning is an accepted machining process for finishing hardened workpiece materials。Compared with other processing technologies，It is flexible、And good economic characteristics。Ever since it came out，With the assistance of the machine tool manufacturer、PCBNDevelopment of new material grades and improvement of tool manufacturing methods，Hard turning continues to achieve significant performance improvements。 The drive parts are easy to hard turn，The synchromesh gears in this paper are processed with different tool concepts。The number of different machinations of this part highlights the advantages and limitations of the different concepts used。 Despite the hard turning option a few years ago
2015-01-06 Reading quantity 2818
introduction： 1，Shaft and 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。]Selection and control room tolerances Pressed bearingINABearings should be flexible without block rotation direction。If significant rotation is not flexible，Then the size of the shaft is too large，forbearance。As the post enters into the obvious“Shasha”axial
2015-01-06 Reading quantity 1568
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