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introduction：Rolling friction Friction when two objects in contact roll relative to each other or tend to roll relative to each other。The mechanism of rolling friction is different from sliding friction﹐It mainly comes from the rolling body producing bullets in the contact area-Plastic deformation﹐At the point of contact(Disjunction line)The contact pressure distribution in the contact area is asymmetrical﹐Causing the reaction of the supporting surfaceN eccentricity﹐And create frictionF (See picture Rolling friction diagram )。Use the normal reaction notationN Distance to the point of contact﹐According to the equilibrium conditions of the forces Where is the radius of rolling element﹔Is the rolling friction coefficient﹐Its dimension is length﹐Its value is associated with the material of the contact surface
2015-02-22 Reading quantity 2804
introduction： From the use of reasons and internal factors of two aspectsKOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedKOYORolling bearings are equipped with retainers。 inKOYOBearing in the processing process，The outer ring of the bearing、Inner ring、How do the roller and cage fit together。]Reasons for effectiveness，The use factor mainly depends on whether our use method is reasonable，Intrinsic factors are actually our choicesKOYObearing[KO
2015-02-22 Reading quantity 1564
introduction：xiangjiao tanhuang Rubber spring rubber spring A spring made of rubber。The elastic modulus of rubber spring is small，Large elastic deformation after loading，To absorb shock and vibration。It can be subjected to multiple loads simultaneously，However, the resistance to high temperature and oil is worse than that of steel springs。Rubber springs are commonly used in mechanical equipment、Vehicle walking mechanism and suspension，Damping and buffering effect。The rubber spring can be designed into various structural forms according to the work needs（See picture[Structural form of rubber spring]），Commonly used are cylindrical shapes、Truncated cone、rhomboid、Ring sleeve and combined type, etc
2015-02-22 Reading quantity 2783
introduction：ciliuti mifeng Magnetic fluid seal ferrofluidic seal Semi-fluid dynamic sealing of leakage channel with ferrofluid（See picture[Magnetic fluid seal diagram]）。Fe3O4·CrO2Ferromagnetic ultrafine particles are suspended in a low-volatility liquid，Forming a ferrofluid。Place the ferrofluid in the seal gap，Ferrofluid can form strong liquid film under the action of magnetic field force,To stop the leak。Magnetic fluid seals are often used to seal gases,Suitable for sealing high vacuum systems。It can be used at high speeds，But not resistant to high temperature and pressure。 Li Keyong
2015-02-22 Reading quantity 2807
introduction：naoxingzhou Flexible shaft flexible shaft Very small stiffness、A freely flexible shaft(See picture[Type of flexible shaft])，Also called flexible shaft。Flexible axes are used to join two axes that are not on the same axis and in the same direction or have relative motion，To transmit rotational motion and torque。 The flexible shaft is divided into winding type、Cardan type and spring type3Kind of。 ① Winding flexible shaft:Per wire（Or strip）shaft、Hose and shaft joint。Wire shaft4～10A layer of high carbon steel wire wound,The outermost layer is generally left handed，The torque is mainly borne by this layer，shaft
2015-02-22 Reading quantity 2792
introduction：When the slide moves on the bed rail surface，There is a relative slide between the two surfaces，Due to fine iron filings falling between the sliding surfaces，produce“Abrasive wear
2015-02-22 Reading quantity 16323
introduction： The design service life of CNC machine tools is generally7years，Mainly the service life of numerical control，This ratio between spending and earning money will directly affect your business，Therefore, a careful analysis of the function of the selection is a necessary condition for effective investment。 In foreign countries, there has long been the term engraving and milling machine（CNC engraving and milling machine），Strictly speaking, carving is a part of milling，Whether to buy a engraving machine or a CNC milling machining center is often a question to ask yourself。In addition，And the current prevalence of high-speed cutting machine tools（HS
2015-02-22 Reading quantity 2792
introduction：one、summarize CIPThe cleaning device does not separate the production equipment。Safe and automatic cleaning system can be used in simple operation，Has been introduced into almost all foods，Beverage and pharmaceutical factories。 CIPThe cleaning device can not only clean the machine，It can also control the cleaning method of microorganisms。 CIPThe cleaning device has the following advantages： 1、It can rationalize production plan and improve production capacity。 2、Compared to hand washing，Not only does it not affect the cleaning effect due to the difference of operators，It can also improve the quality of its products。 3、anticlear
2015-02-22 Reading quantity 2791
introduction：Butterfly valve Introduction:The opening and closing part of the butterfly valve is a disc shaped butterfly plate，Rotates around its own axis in the valve body，The valve that can be opened and closed or adjusted is called the butterfly valve。Butterfly valve fully open to fully closed is usually less than90The degree of ，The butterfly valve and the butterfly rod themselves have no self-locking force，For positioning the butterfly plate，The worm gear reducer should be installed on the valve stem。Using worm gear reducer，Not only can the butterfly plate have self-locking ability，Stop the disc in any position，It can also improve the operating performance of the valve。 Industrial special butterfly valve features high temperature resistance，The applicable pressure range is also high，The nominal diameter of the valve is large，The valve body is made of carbon steel，The sealing ring of the valve plate is made of gold
2015-02-21 Reading quantity 2798
introduction： Used to control liquid pressure in hydraulic transmission﹑Flow and direction elements。The pressure control valve is called the pressure control valve﹐The flow control valve is called the flow control valve﹐Control pass﹑The break and flow direction are called directional control valves。 Pressure control valve Divided into relief valves according to use﹑Pressure reducing valves and sequence valves。(1)Overflow valve﹕Can control the hydraulic system to maintain a constant state when reaching the set pressure。Relief valves for overload protection are called safety valves。When the system fails﹐The pressure builds up to the point where it can break
2015-02-21 Reading quantity 2794
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