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introduction：FAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]The conditions required are increasingly stringent market requirements for equipment and other attributes，Performance is also increasingly diverse。Ability from a lot of structure，dimension，Select the most suitable bearing，You need a different perspective。Bearing in selection，It is generally believed that，As a bearing，Installation and removal difficulty arrangement，bearing，Size and bearing market，As much as space allows，The bearing structure is generally determined。In the use of various mechanical design life and various durable bearing limits
2015-01-13 Reading quantity 1591
introduction： 1．Common measuring tool Because of the structure of the cage，shape；More complicated，Some inspection items lack perfect measuring means and methods。As it stands，Commonly used measuring tools are： （1）Vernier calipers The basic structure of vernier calipers is described in Chapter 2 above。There are several measuring ranges，The measuring range and scale value can be selected as required when inspecting the cage。Vernier caliper is a medium precision measuring tool，Widely used for measuring the inside of cages、External diameter、breadth、Height thickness、Equal depth dimension。 （2）micrometer Micrometers are used for
2015-01-13 Reading quantity 1532
introduction：The gas generated during injection molding has always been a challenge to the design ability of mold manufacturers，Mold structure is becoming more and more complex，The difficulty of exhaust also increases。The gas in the mold may cause the plastic parts to burn or fill incompletely，And make the product wrinkle or ripple larger，The back pressure in the mold also delays the flow of the injection material。 The traditional solution is to use exhaust parting surface，Exhaust air through vents or other additional devices。But when the mold produces a lot of gas，The effect of traditional exhaust method is not ideal。To solve this problem，International die steel company has developed a porous metalPorcerax Ⅱ，its25%The volume distribution is loose
2015-01-13 Reading quantity 2820
introduction：There are substances in nature3Species morphology:Solid phase、Liquid and gas phases。A flow in which two phases coexist is called a two-phase flow。The heat transfer process between two-phase flow and pipe wall is called two-phase flow heat transfer，Its actually a convective heat transfer。In industrial production，There are various types of two-phase flow and two-phase flow heat transfer。Such as，Flow and heat transfer in fluidized beds in the chemical industry，Flow and heat transfer when conveying powdery and granular solids in pipes,gas-liquid(Or steam-liquid)Two-phase flow heat transfer, etc。Intermediate steam-Liquid two-phase flow heat transfer has been extensively and deeply studied，Because it is widely used in the production of steam boilers、Steam condensing equipment and
2015-01-13 Reading quantity 2911
introduction： Work material Processing mode Cutting tool brand Depth of cuttingαp（mm） Feed quantityf(mm/r)
2015-01-13 Reading quantity 2803
introduction： 1.Industrial lubricating oilISOViscosity class classification ISOViscosity series Kinematic viscositycSt (mm2/s),40℃ Central value
2015-01-13 Reading quantity 1542
introduction： Lathes are mainly used for processing various rotating surfaces and end faces of rotating bodies。Such as turning inside and outside cylinders、Conical surface、Ring groove and forming rotary surface，End turning and all kinds of common threads，Equipped with process equipment can also process a variety of special shape surface。Drilling can also be done on the lathe、reaming、reaming、Knurled and other work。 Milling machine A versatile machine tool，The surface can be machined on the milling machine(Horizontal plane、Vertical plane)、groove(keyway、Tv-groove、Dovetail trough, etc)、Split tooth part(Gear wheel、Splined shaft、Sprocket wheel、Helical surface(
2015-01-13 Reading quantity 1439
introduction： Processing method Uncoated blade Coated blade rough latheYM052、YC45、YC35、YC30①、YC10①、YD15、YW3、YS25、758、726、707YB03①、YB01①、YB02①、CN25Semi-finished car、Finish turningYC10①、YD10.2①、YD20①、YN05、YN10、YD05、YT05、YD15、YW3、YM051、YM052、726②、758、643、712、715、707YB21①、CN15、CN25And a half
2015-01-13 Reading quantity 2793
introduction： What is it？ NX 3 for NX Digital product development systems introduce new levels of user interaction，Provides the level of productivity typically associated with simpler design-centric tools。 NX 3 Built on proven NX Based on the user interaction model，And continueUGS Focus of attention，That is, user interface design based on workflow。NX3Easy to use and easy to customize，The user can concentrate on the task at hand，It removes traditional barriers to learning advanced functions，And accelerate the adoption of new methods of product development。
2015-01-13 Reading quantity 2801
introduction： Consciously trim the tooth surface of the gear﹐Technological measures to make it deviate from the theoretical tooth surface。According to the different parts of the modification﹐Gear tooth modification can be divided into tooth profile modification and tooth direction modification。 Tooth profile modification Trim the tooth profile slightly﹐Make it deviate from the theoretical tooth profile。Tooth profile modification includes edge modification﹑Trimming and digging roots, etc(figure1 Tooth profile modification )。Trimming is the modification of the tooth profile near the top of the tooth。The impact of the gear teeth can be reduced by trimming the edge﹑Vibration and noise﹐Dynamic load reduction﹐Improved tooth surface
2015-01-13 Reading quantity 2880
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