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introduction：To control mechanical noise and vibration，First, it is necessary to identify where the vibration or noise is generated，The commonly used identification methods are mainly： (1)Subjective identification，Use the ear to determine the source of mechanical noise and its primary and secondary，Because the human ear brain system itself is a very sensitive sensory system，So it can correctly distinguish between different sounds．The result of this judgment，Can do a general understanding of noise source location。 (2)Step by step operation method，For complex machinery，Some components can be disconnected step by step，To distinguish the impact of each part of the noise on the whole machine noise。 (3)Selective isolation，Cover the parts of the machine
2015-05-08 Reading quantity 2916
introduction： Current，Injection molding manufacturers are closely related to the plastic mold industry。Injection molding product quality and injection molding production efficiency are closely related to plastic molds。According to statistics，80%The above quality and efficiency are related to plastic molds。The importance of molds in injection molding enterprises is reflected in the following points。 one：The delivery date of the mold，Which is the premise of being able to start mass production。The enterprise management level of mold manufacturers is one of the important conditions for the efficiency of mold manufacturing。 two：The molding cycle of the mold，This determines the production efficiency of injection molding。The idea and concept of mold designer is mold into
2015-05-08 Reading quantity 2805
introduction： Woodworking machine for machining rotating or complex surfaces of wood with woodworking turning tools。Woodworking lathes are divided into ordinary woodworking lathes﹑Copying woodworking lathes and round rod machines。 Common woodworking lathe The workpiece is mounted in a chuck﹐Or support the spindle and tail frame between the two centers for rotating movement(figure1 Common woodworking lathe)。The turning tool is mounted on the tool holder﹐Driven by the slide box for longitudinal or transverse feed movement﹐It can also be hand-held turning tool leaning on the bracket。Ordinary woodworking lathes are used to round out the car﹑Face cutting(See turning)﹑Grooving and boring(See boring
2015-05-08 Reading quantity 2829
introduction：1)INAImported 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，Of course, the price is not cheap。]The quality of。Disassemble the bearing box during,First of all,Check lubricating grease for deterioration、caking、Impurities and other undesirable conditions,Its judgment.INAImportant basis of bearing damage causes。secondly,Check the bearing for bites and wear;InspectINABearing inner and outer ring、Rolling element、The surface finish of the cage and whether there are cracks、corrosion、desquamate、pit、Overheat discoloration
2015-05-08 Reading quantity 1476
introduction： 1.Lets do an arc surface 2.Make a sectional sketch 3.Use sketch to trim surfaces 4.Make a datum..And make a sketch 5.Make a lofting surface
2015-05-08 Reading quantity 2813
introduction：Use the lever principle to turn the bolt、Screws、Hand tools for nuts and other threaded fasteners。A wrench is usually provided with an opening or sleeve hole for holding a bolt or nut at one or both ends of the handle。Apply an external force to the shank along the direction of thread rotation when in use，You can turn a bolt or nut。 Wrenches are usually made of carbon structural steel or alloy structural steel。figure[Spanner of all kinds]Several commonly used wrench types。 A fixed size opening is provided at one or both ends of a fixed wrench，Used to turn nuts or bolts of a certain size。 A box wrench with hexagonal holes at both ends or
2015-05-08 Reading quantity 2813
introduction：The type of machinery is different，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。]Conditions of use will vary，The performance requirements are also different，But generally speaking，At least two bearings are used on one shaft。 moreover，To facilitate axial positioning，When used, most of the bearings are used as fixed end bearings，The rest are used as free-end axes
2015-05-08 Reading quantity 1572
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。]Packing includes inner packing and outer packing。 After the bearing is manufactured and inspected，That is, cleaning and anti-rust treatment，Put it in the inner package，To achieve waterproofing、moisture-proof、Dust prevention、anti-impact、Maintain the quality and accuracy of bearings as well as ease of use and sales。 Bearing inner packing
2015-05-08 Reading quantity 1479
introduction：Class number Indicates the class number of a processing program English Chinese one1MATERIAL PREPARTATIONStock preparationPmaterial 2SHAPER MACHININGPlanning and cuttingSPUp &will waste 3TURNINGturningTcar 4BRAZING & WELDINGweldWIwelding 5MILLING A.B.C.millingM1,M2,M3milling 6MACHINE CENTERNCMilling centerNCMilling center 7SLOT DRILLINGDeep hole drillSDDeep hole drill 8RE
2015-05-08 Reading quantity 2847
introduction： head This parameter is in automatic compensation mode，When the slow feeding ends the moment，Some material has left the feeding device，While still in mid-air and eventually landed in the weighing bucket，The weight value of this part of the material is called the drop。The weighing display controller can detect the drop value automatically and compensate it automatically by a certain mathematical model，In normal use, the drop value is relatively stable data。 Comparative forbidden time When switching from fast feed to slow feed，Considering the instantaneous instability of the system，Disable judgment during the set time。This is the period of comparative prohibition
2015-05-08 Reading quantity 2924
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