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introduction：The strength calculation and optimization of new product by finite element method can improve the design quality、Effective means at low cost，The prerequisite for the effective use of this method is to ensure the correctness of the calculated results。This paper calculates the strength of a sheet metal part，Focus on“Finite element”Dharma Chung“Boundary condition”The effect on the calculation result，In particular, the analysis object in the work environment has“displacement”The situation of。 with“Finite element method”Strength calculation of the design product，The optimization and improvement of the design products through the calculation results is an indispensable link in the process of new product development，withCAD/CAE/CAMequitechnique
2015-01-11 Reading quantity 2900
introduction：normal，If the integral eccentric bearing is used correctly[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。]，Can be used until fatigue life is reached。But there will be accidental premature damage，Intolerability to use。This early damage，Relative to fatigue life，Is a quality limit known as failure or accident。Many causes are installation、Use、lubricated
2015-01-11 Reading quantity 1495
introduction：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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Outer ring failure frequency：BPFOr≌0.4Nn Failure frequency of inner ring of rolling bearing：BPFIr≌0.6Nn Failure frequency of rolling bearing cage：FTFr≌0.4N Above symbol： n=Number of rolling elements。 N=
2015-01-11 Reading quantity 1442
introduction： Tapered 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。]In the assembly calculation，Through theoretical analysis to explain the generalKOYOThe size deviation of bearing supporting parts can meet the finished productKOYOBearing width deviation requirements，Therefore, the assembly of tapered roller bearings can be interchanged。In this way，At the production site，Tapered roller bearings
2015-01-11 Reading quantity 1786
introduction：This regulation applies to models and their technical specifications。 machine type with road capacity（kilogram） fine indeed The degree of R3-00 coke carbon 100-160 ±5% R4-00 limestone 30-0 ±5% 1、Comply with casting equipment general operating procedures。 2、pre-work，Check the weighing scale for deformation，Whether the transmission shaft falls off，Whether the bottom of the bucket is tight，Whether the door opening and closing is flexible，Notify maintenance personnel to repair if necessary。 3、According to technical requirements，Adjust the weighing lever，Make it accurate in±5%Within the scope of。 4、Do not strike the scale with metal blocks
2015-01-10 Reading quantity 2945
introduction：Qinling tunnelILine useTB880EHeading machine，After nearly two years of construction use，When the machine was found to be crossing a bad area，There is an underutilization of the boot and a reduction in propulsion、The problem of doubling tunneling time。Especially in the hard rock conditions of Qinling Mountains，Crossing time，Two thirds of the way through the boot，The thrust is less than two-thirds of what its supposed to be，When the palm face rock is hard and requires a large push，The excavation time is significantly more than twice the time required for similar rocks in the past，At the same time, tool wear is more serious than similar rocks。According to the analysis, it is caused by the unreasonable design of the propulsion hydraulic system of the machine，The following analysis of the reasons
2015-01-10 Reading quantity 2837
introduction：keqing wakuai zhoucheng Tilting pad 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。] tilting-pad bearing A kind of liquid dynamic pressure bearing in plain bearing,It is composed of several independent tiles that can swing around the fulcrum。By load
2015-01-10 Reading quantity 2825
introduction：1、The first form of cooling is by the outlet or high pressure end of the pump，The clean medium will be transported，Flush the seal face directly，Then it goes into the pump chamber，Through the constant circulation of the medium，The friction of the friction surface is removed to achieve a cooling effect。 2、The second type of cooling On the basis of the first cooling form, a cooling water jacket is added to the back of the static ring，Cooling effect improved，And flushable，Collect the leaking liquid。When sealing medium temperature＞150℃In addition to cooling in the cooling water jacket through the cooling water and static ring back cooling，Forced cooling measures should be taken。That is, the clean medium from the pump outlet should be pre-filtered
2015-01-10 Reading quantity 1580
introduction：A device used to implement the fuel combustion process in an industrial furnace where fuel is the heat source。According to flame furnace heating requirements,Various combustion devices shall be guaranteed:①Complete combustion of fuel is guaranteed under specified heat load conditions；②Combustion process stabilization，Can provide continuous heat to the furnace；③Direction of flame、appearance、The rigidity and spreadability meet the requirements of furnace type and heating process;④Simple structure,Easy to use and maintain。 Different fuels burn differently，Therefore, the structure of the combustion device is also different。Combustion devices can be divided into gases、liquid、Several classes of solid fuels。 Gas fuel combustion device usually
2015-01-10 Reading quantity 2831
introduction： 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。]Drawing terms Code or item number CODE or ITEM name NAME quantity QUANTITY（Not enough space can also be shortened toQ＇TY)
2015-01-10 Reading quantity 1485
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