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introduction：one、 The mechanical lubrication of the oil cracking and gas fractionation units is for the production of ethylene for the petrochemical industry、propylene、Equipment for raw materials such as butene，It and coal cracking gas production equipment in addition to the general pump、blower、compressor、Freezers and hydraulic control equipment, etc，There are also hot oil pumps and gas engines，Use heat resistance、antioxidantISO VG32or46、68、100Ep turbine oil or oil film 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 are on the shaft
2014-12-19 Reading quantity 2801
introduction： Generally speaking，SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]The rolling bearing itself does not produce noise。Commonly felt“Bearing noise”In factSKFbearing[SKFbearing:SKFThe full name is“Svenska Kullag
2014-12-19 Reading quantity 1458
introduction：tangdao Boring tool boring tool Having one or two cutting parts、Specially used for roughing existing holes、Semi-finishing or finishing tools。Boring tool available in boring machine、For use on lathes or milling machines。Because of the different clamping methods，The shank of the boring tool has a square handle、Morse taper shank and7:24Taper shank and other forms。 The shape of the cutting part of the single-edge boring tool is similar to that of the turning tool。In order to obtain high dimensional accuracy of the hole，The size of the boring tool for finishing needs to be adjusted accurately。The fine-tuning boring tool can precisely adjust the boring size on the machine，It has a precision vernier marking dial
2014-12-19 Reading quantity 2803
introduction： Vibrating machine 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。]Replacement procedure of There are two main kinds of vibration motors for vibrating screen，Vertical vibration motor is mainly used in rotary vibration screen，The horizontal vibration motor can be applied to all kinds of vibration screening equipment，The vibrating motor is the most important vibration source of the vibrating screen，Its importance
2014-12-19 Reading quantity 1460
introduction：The input and editing methods of CNC milling machine processing program are shown in the following table。Input and editing methods for table processing programs category item PROGRAM PROTECT MODE SELECT Function key Operation instruction Input the program on the tape into memory Single program input，Unchanged program number dextrorotation
2014-12-19 Reading quantity 2816
introduction：1Basic concept 1．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。]Life span：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 1464
introduction：On the basis of process analysis，Comprehensive consideration of product output and precision requirements。Properties of the materials used，The technical strength of the factory，Equipment and mold manufacturing situation，Determine the process specification of the workpiece and the die structure of each process。 Structural design：On the basis of scheme design，Further design the specific structure size of each part of the mold。 （one） Blanking process analysis Analyze the structure shape of punching parts，Dimensional accuracy，Conformity of material，Punching pressure process requirements，Thus, the possibility of blanking is determined。 （two） Determine the blanking process plan and die structure form Number of operations，process
2014-12-19 Reading quantity 2788
introduction：Needle roller bearings for the universal joint cross shaft of the drive shaft[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。]Gear oil should be used for lubrication。But its usually found in car maintenance，Needle roller bearings for the universal joint cross shaft of the drive shaft[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is used to fix and reduce load friction during mechanical transmission
2014-12-19 Reading quantity 1472
introduction：influenceFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Service life can have many factors that may cause factors and internal friction sound has been further instructions for use。The main factor used for adjustment is installation，Use and maintenance，Maintenance and repair，And meet the technical requirements。According to the installation of needle roller bearings，Use，upkeep，Maintenance techniques require operating bearing contact loads，speed，Lubrication condition monitoring and inspection，If the direct cause of an anomaly is found, adjust it back to normal。 Installation condition，For rolling needle shafts
2014-12-19 Reading quantity 1457
introduction：Most of the traditional industrial forming technologies also follow this method，Such as turning、milling、drilling、grinding、planing；Others are formed using molds，As casting、stamping。However, laser rapid prototyping uses a new forming principle——layering、Superimposed forming。For those of you who have studied advanced mathematics，The principle is not unfamiliar。In the application of definite integrals，It has been said that the busbar is the calculation of the volume of the rotation of the known curve and the calculation of the volume of the solid of the known parallel cross section，Both are taken with a thickness of△XiThe section of，It is approximately regarded as an oblate cylinder or a curved cylinder，And then add to it： when‖
2014-12-19 Reading quantity 2808
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