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introduction： one、introduction Although the traditional red brick has a slight advantage in terms of folding resistance and falling resistance，But making red bricks consumes a lot of arable land，The state has gradually restricted the manufacture and use of red bricks。Grey brick、Hollow brick and other new building materials，Use cement、Ash is used as the main raw material，It has been vigorously promoted by national policies。 Block forming machine is a typical brick making machine used to press grey brick blanks，Use proportionally matched ingredients，Longitude distribution、Pressed into bricks，After high pressure steam treatment and other processes，The final result is gray brick。 In order to improve the working efficiency of the block forming machine
2014-12-19 Reading quantity 2983
introduction：one、 Based onUGThe principle of establishing the standard parts library 1．Each standard part should have a central reference（Such as a datum point or datum axis or datum plane，Three - sided benchmarks are used），When creating standard parts，Coordinate system（Relative coordinates and absolute coordinates）Should be in the center of symmetry of the standard part。 2．The number of features should be minimized，The dimensions between features are represented by a relational expression。The characteristic parameters are divided into primary parameters and secondary parameters，Use primary parameters to control and constrain secondary parameters。 3．Each standard piece should be on the menu“Fit out（Assemblies）”Medium Settings“Reference set（Reference R
2014-12-19 Reading quantity 2889
introduction：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]The raceways of the inner and outer rings are circular-shaped channels，The channel radius is slightly larger than the sphere radius，Mainly used to bear load，It can also withstand a certain axial direction
2014-12-19 Reading quantity 1464
introduction： How to solve the failure of electric forklift truck 1、The main reasons for vibration during lifting are：There is air in the lifting cylinder，Hydraulic system leakage，Internal gantryFork size roller and 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。]Excessive wear，two
2014-12-19 Reading quantity 2834
introduction：The purpose of the relief valve Constant pressure overflow action：In a metering pump throttling control system，Quantitative pumps provide a constant flow rate。When the system pressure increases，The traffic demand will be reduced。At this point the relief valve opens，Overflow excess flow back into the tank，Ensure the relief valve inlet pressure，That is, the pump outlet pressure is constant（The valve port usually opens with pressure fluctuation）。 Safety protection function：When the system is working normally，Valve closing。Only the load exceeds the specified limit（System pressure exceeds set pressure）When the overflow is opened，Overload protection，So that the system pressure does not increase（Usually overflow
2014-12-19 Reading quantity 2801
introduction：Hydraulic drive：It uses hydraulic oil as the working medium，Through power element(Oil pump)The mechanical energy of the prime mover is changed into the pressure energy of the hydraulic oil，Then through the control element，And then with the help of an executive element(Oil cylinder or oil motor)Convert pressure energy into mechanical energy，Drive the load to achieve linear or rotational motion，And through the remote control of the control element and the adjustment of the flow，Set the force and speed of the actuator。When there is an external disturbance to the system，The output of the executing element generally deviates from the original setting value，Produce a certain error Hydraulic control：Same as hydraulic transmission，Power components are also included in the system、Control element and executive element
2014-12-19 Reading quantity 2803
introduction： The purpose of quenching is to strengthen steel parts,Give full play to the potential of steel properties. Such as:Improve the mechanical properties of steel parts,hardness、Abrasion resistance、Elastic limit、Fatigue strength， Improve the physical or chemical properties of some special steels，Such as enhancing the ferromagnetism of magnetic steel，Improve the corrosion resistance of stainless steel。 The main purpose of quenching and annealing 1、Purpose of quenching：Change the material from ferrite to austenite，The martensite was obtained by the unbalanced phase transition after rapid cooling，High hardness and strength are obtained 2、Purpose of annealing：Change the material from ferrite to austenite，Ferrite is formed slowly but then in an equilibrium phase，
2014-12-19 Reading quantity 1472
introduction：KOYOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]In the course of its use, it shows strong regularity，And repeatability is very good。Normal quality bearing(KOYOImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。])on
2014-12-19 Reading quantity 1464
introduction：INAbearing[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 metallurgical quality of the material used to be affected by rolling 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，
2014-12-19 Reading quantity 1470
introduction：INAbearing[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。]Although the quality and other aspects are better，But rolling 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
2014-12-19 Reading quantity 1447
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