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introduction：1.Cylindrical roller This type of roller is mainly used for cylindrical 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。]，Roller assemblies can also be used directly in machinery。This type of roller is standardized in size，Can be used as a product roller for design and user choice。 2.Long cylindrical roller This type of roller has a shaft diameter
2014-12-17 Reading quantity 1671
introduction：liuti jixie de neiliu yuanli The principle of internal flow in fluid machinery principles of flow in fluid machines The law of fluid movement in fluid machinery and the principle of the interaction between moving fluid and wall surface and the realization of function transformation。Fluid machinery is the kinetic energy of fluid、The conversion of potential energy or heat energy into output work or the conversion of input work into kinetic energy of a fluid、Potential energy or pressure energy and machinery that transfers energy through a fluid。People have long used the flow of fluids to create fluid machinery。The ancient
2014-12-17 Reading quantity 3095
introduction：INAImported 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。]Corrosion causes and prevention methodsINAImported 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。]Corrosion is caused by various internal and external factors，In summary, there are mainly：
2014-12-17 Reading quantity 1663
introduction：At present, most of the DC switching power supplies used in our country are phase-controlled power supplies，But the phased power supply is rippling、efficiency、Volume and other aspects are not satisfactory，The monitoring system is not perfect，Master and slave are divided，User inconvenience，The new requirements for the power system are not up to par。In addition, the charging device runs in parallel with the battery，When the ripple system is large、When the floating charge voltage fluctuates or is low，The battery will pulse charge and discharge，Bad for the battery。 90Since the ages，America、New power plants and substations in Western countries such as Germany have all adopted switching power supplies，The storage battery is also changed from the original cadmium-nickel battery to lead-acid maintenance-free storage
2014-12-17 Reading quantity 3027
introduction：Abstract：The structure of a new type of three-step compound stamping die with support seat is introduced、Working principle、Design technology and parameter calculation of main working parts．Use this mold，Blanking of the support base blank can be completed in one work step、Punch and bend forming，High production efficiency，Good workmanship quality． keyword：stamping Composite die Tapered wedge bend Abstract：Inthispaper,itdescribesthestructure,workprinciple,designmethodsofthekeypar
2014-12-17 Reading quantity 3035
introduction： SKFbearing[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 central nervous system condition in a mechanical state，They work day and night，Non-stop progress，Its like the legendary perpetual motion machine。Perpetual motion machine，Do not exist，A thing always has a life cycle，It has a life of its own。This is a fact that has to be accepted，us
2014-12-17 Reading quantity 1577
introduction： In large quantitiesTIMKENUnidirectional 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。]In production，General use template、Sample piece、Block and mold adjustment process system；In single piece small batch production，The adjustment is usually made by using the scale on the machine tool or by using the measuring block。The content of the adjustment work also varies depending on the complexity of the workpiece，
2014-12-17 Reading quantity 1647
introduction： Electric forklift features Loading and unloading equipment features of electric forklift trucks 1、Improve handling efficiency，Labor saving，Reduce the labor intensity of stevedores，Improve working conditions。 2、Reduce handling costs。 3、Make full use of cargo space，Speed up space turnover，Reduce the site area of cargo stacking。 4、Shorten operation time，Accelerate vehicle turnover，Expedite delivery of goods。 5、Improve handling quality，Ensure the completion of the goods
2014-12-17 Reading quantity 2916
introduction： An electrolytic machining method for removing burrs from metal parts by electrolysis﹐English abbreviationECD。 figure Electrolytic deburring principle The picture shows the principle of electrolytic deburring。Tool cathode(General brass)It is fixed near the burring part of the workpiece﹐Theres a certain gap between the two(Generally speaking0.3～1millimeter)。The conductive part of the tool cathode is aligned with the bristle edge﹐Other surfaces are covered with an insulating layer﹐The electrolytic action is concentrated in the burr part。During processing, the tool cathode is connected to the negative electrode of the DC power supply﹐The workpiece is connected to the positive terminal of the DC power supply。The pressure is... 0.1～0.3Mpa of low pressure electrolyte
2014-12-17 Reading quantity 2908
introduction： For 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。]sealability，influenceKOYOThere are two main factors for bearing sealing performance，Manufacturing accuracy，The fit and assembly quality between the parts。To solve this problem, we must make progress in these two aspects
2014-12-17 Reading quantity 1579
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