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introduction： 1、 First basisI/OOptimal allocation of pointsI/OModules as well as identify variousI/ONumber of modules；(Tally the number of points required by each system in tabular form，Working out a total) 2、 According to communication requirements and in generalI/OThe number of modules depends on the selectionPCD1orPCD2System，And decide whether the chassis needs to be extended；Expansion box if needed，Select the connection cable according to the design of the control panel； Communication interface：If the required communication port is greater than2A or need withTCP/IP、LONWORKS、
2014-12-12 Reading quantity 2853
introduction： traditionCAESoftware can only do formative analysis，And requires professionals to do a lot of pre-treatment，If you are not satisfied with the analysis，We have to start all over again。Due to traditionCAESoftware is just a means of verification，It is mainly used for comparison of schemes，Cannot be used as a process aid，Thus causeCAETechnology has long been outside the production process。Present DayCAEThe software has been developed to do more than just form analysis，And can participate in the whole process of stamping process。We call it computer aided stamping。In terms of process design，CAEWith automatic or auxiliary stamping direction determination、Quickly generate drawing surface、billet
2014-12-12 Reading quantity 2942
introduction：driveNSKSelf-aligning roller 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。]Its a form of the central nervous system in which machines operate，In order to be able to ensure the normal operation of the drive shaft form，The effect of prolonging life in this regard，In use, we should pay attention to the following points； 1、In order to ensure transmissionNSKSelf-aligning roller bearings
2014-12-12 Reading quantity 1554
introduction：overlap：The residual material between two adjacent workpieces in the layout or the residual material between the workpiece and the edge of the strip is called the lap edge。 Edging action： 1）Offset positioning error，Prevent errors due to the width of the strip、Feeding step error、The defective waste products are blanked out due to skew error of feeding materials。 2）The strip should also be maintained to have a certain strength and stiffness，Ensure smooth feed，Thereby improving the quality of the parts，Blanking along the entire enclosed contour line，equilibrate，Improve die life and workpiece profile quality。 The sides are scrap，Start with saving materials，The edge value should be as small as possible。But too small edge is easy to squeeze into the die
2014-12-12 Reading quantity 2871
introduction： 1 Dehydration volume The dewatering volume of the cylindrical part of the centrifuge drum refers to the total capacity of the liquid entering the cylindrical part of the drum，It can also be understood as the actual working volume of the centrifuge。The size of the dehydration volume directly determines the residence time of the material in the centrifuge（See below2section），This determines the processing capacity of the centrifuge。When a user buys a centrifuge，Neither buy it for the drum diameter，Its not the aspect ratio to buy it，It is not the size of the electrical power to buy it，What youre actually buying is this dehydration volume。The size of dehydration volume is the most important parameter of dehydration capacity。It is rotating drum diameter
2014-12-12 Reading quantity 2865
introduction：JapanNTNThe company developed and launched“Eccentric 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。]Ring type thrust needle roller 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 the other parts are on the shaft each other
2014-12-12 Reading quantity 1599
introduction：Solid casting is the use of styrofoam plastic to create a pattern（Gating system included），At pouring，It quickly vaporized and burned away，The liquid metal filled the original place，Casting method for castings made after cooling and solidification Solid casting process has the following characteristics： （1）Simple casting process Solid casting has no cavity and parting surface，No mold、Core and box matching and other processes，The process and cleaning procedure are simplified。 （2）It produces a lot of gas During pouring，Due to the effect of hot metal radiation，Before contact with liquid metal，First,
2014-12-12 Reading quantity 2938
introduction： introduction Sheet material profile with small length，And slot section parts are traditionally used in special molds1sub-or2Made of sub-stamping。It can also be pressed by unit with a universal tool，however，This method is used for planar segments3Should be wide enough。In the manufacture of special die punch and die，From the nominal thickness of the material。Set out，Fit working surface。In closed position，The mold should correct the plane segment of the part，The influence of free bending of blank is excluded。The actual value of blank thickness in May be different from in。Very different values，Therefore, not all segments are subject to correction。 Such as
2014-12-12 Reading quantity 2886
introduction： NSKbearing[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 microstructure overheating after quenching can be observed on the rough edges of the parts。But to determine exactly how overheated it is you have to look at the microstructure。ifGCr15Coarse acicular martensite appears in the quenched structure of the steel，It is quenched superheated tissue。The cause of formation may be quenching heating temperature
2014-12-12 Reading quantity 1550
introduction：1、introduction Crankshaft is one of the key components of automobile engine，Its performance directly affects the life of the car。The crankshaft is subjected to large loads and constantly changing bending moments and torques，The common failure modes are bending fatigue fracture and journal wear，Therefore, the crankshaft material is required to have high rigidity and fatigue strength and good wear resistance。With the development of ductile iron technology，Its performance is also improving，High quality and cheap ductile iron has become one of the important materials for the manufacture of crankshaft。 Since the1947Since the invention of ductile iron，After a short effort，Its tensile strength has increased to
2014-12-12 Reading quantity 1544
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