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introduction：Outer spherical 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。]The secondary cause of marks appearing in the process of installation is：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 makeNS
2015-04-03 Reading quantity 1523
introduction： An important process before hot forging。Metal plasticity increases when heated to a certain temperature﹐Denaturation resistance reduction。figure High temperature strength curve of steel carboniferous0.45％Carbon steel and nickel containing﹑chromium﹑High temperature strength curve of tungsten alloy steel。According to the curve﹐The strength of metals decreases with increasing temperature。 Heating temperature Forging billets are generally heated to the permissible initial forging temperature of the metal。To ensure uniform temperature inside and outside﹐After the surface of the forging blank is heated to the required temperature, it should be kept warm for a certain time。Holding time with metal
2015-04-03 Reading quantity 2777
introduction：KOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedKOYORolling bearings are equipped with retainers。 inKOYOBearing in the processing process，The outer ring of the bearing、Inner ring、How do the roller and cage fit together。]Trials can be classified in many ways： According to theKOYObearing[KOYObearing:kOYOBearings are generally required to bear large loads，Often without a cage，Instead, fill the inner and outer raceways with rolling elements。And most small and medium-sizedKO
2015-04-03 Reading quantity 1539
introduction：In this paper, 3D modeling and NC machining of the punch die of the front panel of the small speaker are studied，The application steps of the combination of 3D molding and NC machining technology in mold manufacturing are given。Organic combination of modeling design and CNC machining，For small mold processing will be a good choice。 In mold making，The machining of three dimensional profile is always a difficult point。In traditional processing，A lot of research has been used to achieve the three-dimensional profile，This will inevitably affect the quality of the mold and processing efficiency。If we can combine the 3D shape of the surface with the CNC machining technology，Can greatly improve the work efficiency and mold quality。
2015-04-03 Reading quantity 2776
introduction： First of all，Mold as the core product of industrial technology，Its full of all kinds of technology，Including structural design、Processing technology、Schedule optimization and so on，Contains the main cutting function in the processing of industrial machinery and equipment；It is an unmitigated spokesperson for various industrial machinery and equipment processing skills，And the mold plays a very important role in real life，For example, many household appliances used in family life，TV set、DVD player、air conditioner、Refrigerator, etc.，And the phones you use in your daily work、Personal Smart Phone、Telephone set、Facsimile machine、computer、printer，They all need molds to play the role of parents，ability
2015-04-03 Reading quantity 2776
introduction：maiguaban shusongji Buried scraper conveyor enmasse conveyor A conveyor for conveying bulk material in a closed chute with a scraper attached to a traction chain。The conveyors traction chain and scraper are embedded in the material，The scraper occupies only part of the section of the chute，The material accounts for most of the section of the tank。Its energy level、Tilt or vertical material transfer。Horizontal transport time，The scraper used is a flat strip，According to the principle that the cutting force of the chain and scraper embedded in the bulk material is greater than the resistance of the groove wall to the bulk material，Make the bulk material move forward with the scraper，Now shift
2015-04-03 Reading quantity 2786
introduction：Precautions for use rollSKFbearing[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]Precision parts，Therefore, it is required to be cautious when using，I used a high-performance oneSKFbearing[SKFbearing:SKFThe full name is“Svenska K
2015-04-03 Reading quantity 1443
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。]The disassembly should be carried out as carefully as the installation。Be careful not to damageNSKshaft
2015-04-03 Reading quantity 1517
introduction：There are many factions of mold design,It is a collection of people to summarize the mold design criteria,Some guidelines for beginners who want to learn mold design.First I want to talk about which side to put the slider on(day,to,Controls(On the left)Or reverse operation side(right)). 1.About better,misfit. 2.Better go down than up. To explain,First, the basic requirements for the positioning of each side of the slider after opening the mold are discussed: 1.around:Locating bead(pliers). 2.Up.:spring. 3.Under the:Stop dog. The above sides should be more positioning beads,spring,Of course a block works. From the basic requirements of the positioning of the slider
2015-04-02 Reading quantity 2889
introduction： Sand casting is divided into manual molding（Core making）And machine molding（Core making）。Manual modeling means that the main work of modeling and core making is completed by hand；Machine modeling refers to the main modeling work，Including sand、compaction、draw、The closing box is completed by the molding machine。Botou casting tool introduces the main methods of manual molding： Manual molding because of its flexible operation、Strong adaptability，Simple process equipment，No modeling equipment and other features，It is widely used in single piece small batch production。But manual molding productivity is low，Greater labor intensity。There are many ways to shape by hand，Commonly used are the following： 1． Integral molding
2015-04-02 Reading quantity 1452
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