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introduction：Generally speaking，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。]It does not produce noise by itself。Commonly felt“Bearing noise”In fact, the bearing directly or indirectly produces a sound effect of vibration with the surrounding structure。This is why many times the noise problem can be viewed as a vibration problem involving the entire bearing application。
2015-01-04 Reading quantity 1478
introduction：In use of 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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Due to improper operation in the process，underlubrication，Rust and corrosion，And some other factors such as electric current，External material，Eccentricity causes the service life of bearings to be greatly reduced。Therefore, in the process of using bearings, it is necessary to have sufficient understanding and understanding of the preventive measures of bearings。
2015-01-04 Reading quantity 1481
introduction： pick to: This paper introduces the digital coding of rapid forming of unit die based on simple graphic elements,The structure diagram of NC unit stamping die is given,It is introduced in detailAT89C52The die control system composed of single chip microcomputer,withVB6.0The system program block diagram and the communication program block diagram between the host computer and the single chip computer are prepared。 keyword: Numerical control;Cell graph;Stamping die;Rapid prototyping;Single chip microcomputer 1 before said With the rapid development of economy and the diversification of market demand,Peoples requirements for the production cycle of products are becoming shorter and shorter,especially
2015-01-04 Reading quantity 2901
introduction：In order to ensureTIMKENAligning ball 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。]Long life，Can not meet the general installation and adjustment requirements，We should focus on the following measures： (1)willTIMKENAligning ball bearings are grouped according to the dimensions of their interference fit surfaces，In each group will beTIMKENAligning ball bearings
2015-01-04 Reading quantity 1468
introduction：Stainless steel marking method Numbering and representation of steel ①Chemical components are represented by international symbols for chemical elements and national symbols，Use Arabic letters to indicate the content of ingredients： Such as：China、Russia12CrNi3A ②A fixed digit number to represent a steel series or number；Such as：America、Japan、300Department of、400Department of、200Department of； ③Use Latin letters and order to form serial numbers，Use only。 Numbering rules of our country ①Use element notation ②use、Chinese pinyin，Open-hearth steel：P、Rimmed steel
2015-01-04 Reading quantity 1557
introduction： 1．Screw loose fixed 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。]Seat bolt。DeutschlandFAGImported 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，Natural price
2015-01-04 Reading quantity 1578
introduction：Use 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，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Various mechanical devices、The performance of instruments and other market requirements are becoming more stringent，The required conditions for bearings、Performance is also increasingly diverse。In order to be able to from a large number of structures、In size，Select the most suitable bearing，It needs to be studied from various angles。When selecting bearings，normal，test
2015-01-04 Reading quantity 1493
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。]Whether the installation is correct，Direct impactINAAccuracy of bearings when used、Life and performance。 ⒈Installation with copper rod and hand percussion This is an easy way to install small and medium-sized bearings。When the bearing inner ring is a tight fit，When the outer ring is loosely fitted，Hold the copper rod against the bearing inner ring face
2015-01-04 Reading quantity 1552
introduction：1.Increase the seal pressure，Adjust the pressure spring Fuller pump in use，The tongue valve needs to be switched on and off continuously。When the tongue valve is open，That is, when the material is arranged，There is bound to be part of the conveying material of the low-pressure compressed air into the discharge chamber。Because the spiral of the cylinder part is longer，Greater resistance，So this part of the compressed air is not easy to channeling to the hopper。The only way out is through the discharge end 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，To reduce
2015-01-04 Reading quantity 1585
introduction：intro：This paper introduces several simple methods to identify the advantages and disadvantages of optical cable keyword：Optical cable one、rind：Indoor optical cables generally use polyvinyl or flame retardant polyvinyl，Smooth appearance、light，pliable，Easy peel。Poor quality fiber optic cable skin finish is very poor，Easy and tight sleeve、Aramid adhesion。 Outdoor opticalPEThe sheath shall be of high quality black polyethylene，After forming the cable, the outer skin is smooth、light、Uniform thickness、Free of bubbles。Poor quality fiber optic cables are generally produced from recycled materials，The fiber optic cable has a rough skin，Because there are many impurities in the raw material，A closer look reveals that there are many tiny pits in the fiber optic cable，shop
2015-01-04 Reading quantity 2866
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