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introduction：Linear motion mechanism A mechanism that causes a point on a member to move accurately or nearly in a straight line﹐Most of them are composed of rotating pairs and rod members which are easy to manufacture。There is no difficulty in machining high-precision moving pairs﹐This mechanism is only used in instruments and certain machinery。This kind of mechanism can be divided into two categories: approximate linear motion and correct linear motion。 Wallter﹐J.Approximate linear motion mechanism﹕19The beginning of the century﹐In order to replace the then cumbersome fan chain mechanism﹐Wallter﹐J.An approximate linear motion mechanism is made by using parallel motion principle(figure 1 Watt approximate linear motion mechanism )。This kind of mechanism is in the middle position﹐A
2014-12-16 Reading quantity 2995
introduction：Most ofIKOThere are many reasons for bearing damage，Such as a load that exceeds the original estimate、Ineffective seal、Too small bearing caused by too tight fit[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。]Gap and so on。Each of these factors has its own special damage pattern and will leave special damage traces。therefore，Inspection of damaged bearing
2014-12-16 Reading quantity 1677
introduction： Working principle Steam tube heating rotary dryer(Also known as steam calciners)Its arranged in concentric circles inside the cylinder1~3Coil heating tube，One end is installed on the drainage separation chamber of the header box at the exit of the dryer；The other end is mounted on the tube plate of the vent head with a heat-expandable structure。steam、Heat carrier such as hot water is added by steam journal tube，Distributed to each heating pipe through the header box，The condensate is borrowed from the dryer
2014-12-16 Reading quantity 2937
introduction：hanjie zhiliang Welding quality welding quality The degree to which the welding product meets the design technical requirements。Welding quality not only affects the performance and life of welding products，More importantly, it affects the safety of people and property。Welding quality is usually determined by the design quality of the product、Processing quality、Quality inspection and post-welding treatment and other links to ensure。 Design quality welding products selected joint type and its calculated strength should meet the actual bearing capacity。The welding method should be suitable for the characteristics of the component，Good economy。Welding process
2014-12-16 Reading quantity 2955
introduction： In recent years，The demand for thin galvanized sheet is increasing，The electrogalvanized sheet production technology has been rapidly developed。 2030mmThe annual output of continuous galvanizing unit is15want，Unit composition figure1-6As indicated。 2030mmThe main products of continuous galvanizing unit are single-side galvanized sheet、Various types of zinc plates such as double-sided galvanized sheet and differential galvanized sheet。Its main indicators are： Plate thickness：0.5-2.5mm、breadth900-1550mm； Thickness of coating：When double-sided plating3-40g／m2，The coating thickness can be adjusted in this range when the difference thickness galvanized，One side plating
2014-12-16 Reading quantity 1651
introduction：The influence of gate on parts and the choice of location one、Gate location requirements： 1.Appearance requirement(Gate mark,Welding line) 2.Product functional requirements 3.Mold processing requirements 4.Warping deformation of the product 5.Gate volume is not easy to remove two、Impact on production and function： 1.flow（FlowLength）Determined injection pressure，Clamping force，And whether the product is full or not Shortening of flow length can reduce injection pressure and clamping force 2.The position of the gate will affect the holding pressure
2014-12-16 Reading quantity 3028
introduction：1.TIMKENbearing[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。]If well lubricated，And correctly block debris and moisture,Indicates that the oil seal should not be worn.however,It is best to open the bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is fixed and reduced in the mechanical transmission process
2014-12-16 Reading quantity 1660
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。]In the course of its use, it shows strong regularity，And repeatability is very good。Normal high quality miniature bearings[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Also can
2014-12-16 Reading quantity 1709
introduction： （1）Installation aspect：If mounted on the axle，Make sure its in place and parallel to the left and right，becauseTIMKENbearing[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 outer ring is fixed to the chassis，And the inner ring is active，So pay attention to the wheel can not be pressed
2014-12-16 Reading quantity 1657
introduction：Double row angular contact ball bearings are lubricated[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。]To the effect of dust and rust。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 phase each other on the shaft
2014-12-16 Reading quantity 1576
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