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introduction：A rotary pump that relies on the change of working volume formed between the pump cylinder and two adjacent blades on the rotor when the eccentric rotor rotates to transport liquid or pressurize it(Sight-seeing pump)。Vane pump blades rely on centrifugal force(A spring or high pressure liquid can also be placed at the bottom of the blade)Stick to the inside surface of the pump cylinder﹐And in the rotor slot for reciprocating sliding(See picture Slide pump diagram )。Rotor time﹐The working volume between two adjacent blades on the suction cavity side increases gradually﹐Pressure reduction﹐The liquid enters the working volume under the action of pressure difference。Working volume through a transition zone(Refers to the working volume is not connected with the suction cavity and the discharge cavity of the section)Taper off﹐And drain the liquid
2015-03-29 Reading quantity 2789
introduction： Outer spherical bearing with seat[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。]Due to the different use environment，So erosion behaves differently，Because the erosion is different。Bearings, of course, can not escape this fate of erosion，Here are three ways in which bearings can be eroded。
2015-03-29 Reading quantity 1545
introduction：inBrotherPT-2420For easy and quick installationPT2420printer，Please read this note carefully before installation。 1，Do not open it before installationPT2420Printer power supply，method：In connection with the computerUSBBefore connecting，Connect the power cord of the printer first，Wait until the green power indicator lights up，Press the white button to the right of the indicator to turn off the power，rejoinUSBline，Then install the software。 2，Start installing software：Insert the installation CD-ROM，Generally, an installation window will be displayed automatically，Prompt for language selection
2015-03-29 Reading quantity 2792
introduction：Definition and specific varieties of difficult-to-process materials，It varies with The Times and areas of expertise，Such as，Superheat resistant alloys commonly used in the aerospace industry、Titanium alloy and composite materials containing carbon fiber, etc，Are difficult to process materials in the field。Engineers and technicians in the space industry have carried out research and development of processing technology，Cutting tools and machining methods suitable for use in this field have been developed。In recent years，Multi-function of mechanical products、The development momentum of high functionalization is very strong，Parts must be miniaturized、micronization。To meet these requirements，The materials used must have high hardness、High toughness and wear resistance，And have these characteristics
2015-03-29 Reading quantity 2873
introduction：Use wellTIMKENbearing[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 point of： TIMKENBearing is a kind of precise mechanical support element，TIMKENBearing users deeply hope to install on the main engineTIMKENBearings are able to maintain their dynamic properties without damage during the intended service period，But objective facts sometimes
2015-03-29 Reading quantity 1444
introduction：Surface grinding takes different forms，Its characteristics are also different。 （1）Peripheral grinding features It can reduce the deformation of the workpiece caused by heat，It is beneficial to improve the grinding accuracy of the workpiece。Suitable for fine grinding of various workpiece surfaces，The flatness error can be controlled within0.01~0.02mm/1000mm，The surface roughness can be reachedRa0.8~0.2μm。However, when not grinding, intermittent transverse feed is used to complete the grinding of the workpiece surface，So the production efficiency is low。 （2）Face grinding features&nbs
2015-03-29 Reading quantity 1468
introduction： UG CADQuick start，or UGPreliminary practical application (Practical Application of Unigraphics) UGDesign and application of (Design Application Using Unigraphics) UGCorrelative parametric design (Associative Parametric Design) Product data management(Product Data Managemen
2015-03-29 Reading quantity 2892
introduction：From the point of view of long life，TIMKENbearing[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 selection requirements are： (1)Choose one with high load capacityTIMKENBearing type TIMKENBearing selection should be taken into accountTIMKENBearing price，Or use higher load capacity but more expensiveTIMKEN
2015-03-29 Reading quantity 1529
introduction： Equipment overview： SGTripod centrifuge for manual scraper lower discharge、Filter centrifuge with intermittent operation。Suitable for separation of solid-containing phase(graininess、Crystalline or short fibrous)，concentration5-6%，Size range0.05-1.5Separation of millimeters of suspension。The centrifuge series has simple structure、Easy to operate，Each operation process can be adjusted as required，The filter residue can be fully washed，The solid phase is not easily damaged，Strong adaptability，Due to the use of scraper lower discharge，Reduced labor intensity，Widely used in chemical industry、Light industry、food、pharmacy、Metallurgy and other industries。 Working principle：
2015-03-29 Reading quantity 2885
introduction：The machining center is stocked with knives，And can automatically change the tool，Numerically controlled machine tools for multi-step machining of workpieces。 The workpiece after a clamping，The digital control system can control the machine according to different processes，Automatic tool selection and replacement，Automatic change of machine spindle speed、The amount of feed and the movement of the tool relative to the workpiece and other auxiliary functions，Complete the processing of several surfaces of the workpiece in turn。 Machining center due to the concentration of processes and automatic tool change，The workpiece clamping is reduced、Measurement and machine adjustment time，Making the cutting time of the machine tool reach the starting time of the machine tool8O％around(Ordinary machine tools are only15～2
2015-03-29 Reading quantity 2873
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