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introduction： A pair of surfaces on which two members of a mechanism are continuously tangent to achieve a given motion law。The contact between surfaces and curves can be regarded as a special case of conjugate surfaces。Space gear drive、Worm drive、Spatial CAM mechanism、Gear machining tool design、Various pump designs and various spatial surfaces such as turbine blades、The processing of optical mirror has conjugate surface problems。It is difficult to solve the problem of space conjugate surface by graphical method，So its a combination of differential geometry and rigid body kinematics，To vector、matrix、The analytical method of tensors or even numbers as tools，The relation between the geometry of a pair of conjugate surfaces and their relative motion is studied。 Only oneself
2015-04-09 Reading quantity 2801
introduction：1、Check the machine、Pump and mechanical seal part of the technical requirements： a. Shaft curvature must not exceed the maximum0.05mm。 b. All parts in the component are in accordance with the requirements of the drawing。b.Tightening the gland should be done after the coupling is aligned，Press screws should be tightened，Prevent flanges from deflecting。c.The amount of compression of the spring is allowed according to the drawing±2mm。 c. The oscillation of the shaft at the installation of the mechanical seal shall not be greater than0.1mm。c.The axial momentum of the shaft must not be greater than0.5mm。d.Install the mechanical seal parts of the shaft manufacturing toleranceh8，Degree of finish1.6。e
2015-04-09 Reading quantity 1571
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 full name of the steel is rolling bearing steel，It has high compressive strength and fatigue limit，High hardness，High wear resistance and toughness，Good hardenability，Sulfur and phosphorus control poles
2015-04-09 Reading quantity 1564
introduction： 1、In general，For long continuous working reducer，Run on5000Change the oil every hour or once a year，A reducer that has been out of service for a long time，Before re-operation, the new oil reducer should also be replaced with the same oil as the original brand，Do not mix with different grades of oil，Oils of the same grade and different viscosities are allowed to be mixed。 2、When changing oil, wait until the reducer cools down and there is no danger of burning，But it should still be kept warm，Because after its completely cooled，The viscosity of oil increases，Drain difficulty。Look out：We need to cut the power to the transmission，Prevent unintentional power-on！ 3、At work，When oil is found
2015-04-09 Reading quantity 2891
introduction：Mold cooling is a key technology。Most of the molding cycle is a process of conductive heat transfer。Energy can be transferred from the hot melt to the cold mold due to the presence of temperature differences。The plastic skin along the mold wall effectively insulates the core layer，This makes heat transfer very inefficient。but，Mold cooling is usually not noticed until the final stage of design。Better cooling design style can be shortened20%—30%Or shorter cycle production times，And increase labor productivity。 In the production cycle，The surface temperature of the mold is constantly“high—low”cyclically，When the hot melt forces the mold
2015-04-09 Reading quantity 2785
introduction：two、Surface treatment methods for magnesium and magnesium alloys [method1] Degreasing treatment。Common solvents are：trichloroethylene、acetone、Ethyl acetate and butyl ketone, etc。 [method2] After degreasing in the following solution70-75°C Bottom retting5min ： Sodium hydroxide 12 water 100 Rinse with cold water，Then in the following solution20°C impregnate5min ： Chromic oxide 10 water 100 Anhydrous sodium sulfate 2.8 Rinse with cold water，Wash with distilled water
2015-04-09 Reading quantity 2888
introduction：SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]The life and manufacture、Fit out、Use is closely related，It has to be done at every step，Note these precautions only when using non-standard bearings，In order to make the bearing in the best running state，Thus lengthening the bearing
2015-04-09 Reading quantity 1440
introduction：mugong xichuang Wood milling machine wood moulding machine With a milling cutter that spins at high speed（See woodworking tool）Grooving the wood、Woodworking machine for tenoning and forming surfaces。Woodworking milling machine is divided into vertical single-axis woodworking milling machine、Wood model milling machine and router3Kind of。 Vertical single-spindle woodworking milling machine（See picture[Vertical single-spindle woodworking milling machine]）The cutter is mounted on a vertical milling cutter shaft extending from a fixed table，Milling cutter shaft can be tilted and adjusted up and down。The workpiece is manually fed against the fixed work surface and guide plate，Guide rollers and form milling fixtures are also available
2015-04-09 Reading quantity 2782
introduction：Technical overview 1、A self-developed dark passage type flow passage light chamber separator is adopted、Electrodeionization assembled by domestic heterogeneous ion exchange membrane and ion exchange resin（EDI）Membrane stack，Combined ultrafiltration、Reverse osmosis（RO）Isomembrane separation technology has been successfully applied to pure water、High purity water preparation，Compact structure，Rational technology，Easy to operate，The system design is innovative。 2、In order toRO-EDIDesigned and manufactured for core technology1m3/hHigh purity water equipment and small high purity water equipment advanced technology，EDIThe resistivity of membrane reactor water production is reached16~17MΩcm，potassium、sodium、zinc、nickel、copper、All silicon、chlorine、nitrate
2015-04-09 Reading quantity 2773
introduction：1．Ordinary quenching oil(Oil temperature at60℃Bottom quenching) Ordinary quenching oil is mainly suitable for iron alloys with good hardenability，Such as small size 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。]steel，Hardening of die steel parts。In the past, only different grades of mechanical oil were used as quenching oil in China。20century80Early era，In order to mention
2015-04-09 Reading quantity 1541
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