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introduction： The structure design of mobile phone product is the key to realize the function of the product，This needs to be coordinated not only with the appearance of the product，More to consider the subsequent production assembly、Spray paint、inkjet、Mold design and manufacturing and other aspects。 The body structure design of mobile phone products involves a wide range of knowledge，There are mainly： 1.Material selection; 2.Surface treatment; 3.Processing means; 4.Packaging and decoration;The use of these factors directly affects the life and appearance of mobile phone products。It can be said that the level of the designer determines the vitality of the product and the level of the product，High-end products are not necessarily high cost， shipment
2015-02-01 Reading quantity 2789
introduction：NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]Installation is good or not，Will affectNSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）into
2015-02-01 Reading quantity 1440
introduction：The main causes of rust are as follows： 1、Some enterprises are producing 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 process, the bearing parts in the processing process and the finished bearing after assembly are not strictly treated according to the requirements of the cleaning anti-rust regulations and the oil seal anti-rust packaging。If the ring in the turnover process turnover time is too
2015-02-01 Reading quantity 1535
introduction： In order to give full play to the function of oil seal，The most suitable type and material must be selected according to the conditions of use。Here is a brief description of the main influencing factors。 1、Surface linear velocity of the shaft：Under the same diameter condition，Oil seals made of different materials，The ability to adapt to axial plane rotation velocity is different，The relationship is shown in the figure below。The linear speed range used by oil seals is generally less than15m/s, The allowable axial surface linear velocity given in the figure below is a reference value，Satisfactory lubrication and good heat dissipation conditions are decisive factors。Correspondingly lower data，Suitable for more demanding conditions。
2015-02-01 Reading quantity 1695
introduction：To maintain the accuracy of the lathe，Extend its service life，And to ensure the safety of people and equipment，The following safety operation procedures must be strictly observed during operation： 1.Work clothes neatly dressed，Female students wear work hats。 2.Before starting the lathe, check whether the handle and operation part of the lathe are normal。 3.The workpiece should be stuck right、clamp、Chuck hands must be removed after loading and unloading work pieces。 4.The tool should be clamped，The square tool holder should be locked。After installing the workpiece and turning tool，Check the machining limit position。 5.Must stop speed change。Lathe running time，It is strictly forbidden to touch the workpiece or measure the workpiece by hand，You cant pull the chips by hand
2015-02-01 Reading quantity 1556
introduction：I used to be the deputy director of the research Institute of Jiangnan Machinery Factory，from1985Since these years，I am responsible for the computer management of the research institute，Limited to the state of technological development at the time，Until I retire，The institute only realized two dimensionsAutoCADdraw。afterwards，The Institute of Science and Technology was merged with the Division of Technology and the Institute of Technology to form the Ministry of Science and Technology，In order to accelerate the pace of product design and development，2002The factory began to select 3D software，After many research and investigation and implementation plan evaluation，The factory finalizes the selectionSolid Edgesoftware。inSolid EdgeSoftware implementation process，Five major training sessions were held before and after
2015-02-01 Reading quantity 2871
introduction：Stainless steel international standard Standard name GBNational standard of the Peoples Republic of China（State Bureau of Technical Supervision） KSKorea Industrial Standards Association specificationsKoreanStandard AISIAmerican Iron and Steel Institute specificationsAmericaIronandSteelInstitute SAERules of the American Society of Automotive Technicians
2015-02-01 Reading quantity 1567
introduction：Equivalent dynamic load P=fP(XR+YA)（Following table） Shizhong： fP--Load coefficient X--Radial load coefficient Y--Axial load coefficient（An approximate median value can be selected temporarily） table：Radial load coefficientXAnd axial load coefficientY（Select from1989Annual 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 motion
2015-02-01 Reading quantity 1566
introduction：ABECWhat does it mean?？ ABECThe standard is for precision 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。]A set of standards is designed with different levels of tolerances used in manufacturing。This standard is developed by the American Bearing Manufacturing Association(ABMA)Lower ring Bearing Engineering Association／council（The English abbreviation isABEC）system
2015-02-01 Reading quantity 1472
introduction： A mechanism that converts the continuous motion of the active part into the periodic motion of the follower with pauses。The intermittent motion mechanism can be divided into two categories: one-way motion and reciprocating motion。 A one-way intermittent motion mechanism（figure1 [One-way intermittent motion mechanism]）Widely used in production，Such as the feed movement of the workpiece on the shaper,The rotation motion of a tool on a turret lathe,The step conveying movement on the assembly line。To achieve a stop in one-way motion is the key to this mechanism design
2015-02-01 Reading quantity 2795
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