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introduction： For nearly 20 years，Flexible multibody system multimechanics（the dynamics of the flexible multibody systems）Has received a lot of attention。Multibody systems are increasingly being used as such as robots、institution、Chain system、Cable teaming、Models of practical systems such as spatial structures and biodynamic systems。Hustonconsider：“Multibody dynamics is one of the most active fields in applied mechanics，Like any developing field，Multibody dynamics is expanding into many subfields。Some of the most active subareas are
2015-03-14 Reading quantity 2884
introduction：ABS ABSResin is a blend，Its acrylonitrile-butadiene-Styrene copolymer，English nameAcrylonitrile-butadiene-styrene (For shortABS)，The general ratio of these three is20：30：50(Melting point is175℃)。Just change the ratio of the three、Polymerization method、Particle size，You can produce a series of different impact strengths、Flow characteristics of the variety，Such as increasing the composition of butadiene，Then its impact strength will be improved，But the hardness and fluidity will be reduced，The strength and heat resistance are also reduced。 AB
2015-03-14 Reading quantity 2779
introduction：The surface of the coated tool should be a bright polished surface，There shall be no rust spots on each working surface of the tool、burnishing、oxidation、Breakage and other defects，There must be no burrs on the cutting edge。before、The surface roughness of the back tool surface should reachRa<0.8~1.25μm。The smaller the surface roughness value is，The better the binding degree of the coating。In addition，The cleaning quality of the tool surface is also very important。 Tool base material The base material of the coating tool and the coating material should be reasonably matched，Must be selected according to different processing requirements。Substrate for coating high speed steel tools，availableW6Mo5Cr4V2(M2)Universal type high speed steel，Can also be used
2015-03-14 Reading quantity 2780
introduction： one）sort There are many types of computer gong knives. The following are introduced according to each classification。 Metric system（MM）Have diameter0.5、1、2、2.5、3，4，5，6，8，10，12，16，20，25，30，32，40 Material differentiation 1.High speed steel，There are metric or imperial systems，This knife is most commonly used，Especially the processing of copper，Machining mold materials are also commonly used，This knife is the most commonly used knife for computer gongs，cheap，e-Buy，But easy to wear，Easily consumable，Imported high speed steel knife country containsCo，Mnisoalloy，More durable
2015-03-14 Reading quantity 2875
introduction： When designing a stamping die，The following requirements must be met： 1)The mold structure should ensure easy operation，Safe and reliable，hands-off、arm、The head can be extended into the danger zone to successfully complete the stamping work。 2)debug、Install、Repair、Easy handling and storage、secure。It will not cause accidents due to mold structure problems。 3)Mold parts should have sufficient strength，Reasonable material selection，Mold should avoid external convex and concave unrelated to function，The exterior should be chamfered，Guide post guide sleeve should be away from the operator，Die pressure
2015-03-14 Reading quantity 2900
introduction：1Spill the beans ①Check whether the assembly quality meets the technical requirements，Whether the spring compression meets the requirements。 ②Check ring、Whether the seal end face of the static ring is damaged。 ③Check whether the seal end face is straight。 2Suddenly excessive leakage during operation，Stop for inspection at this time ①Check ring、The wear condition of the end face of the static ring seal and the change of surface quality，If it is damaged, it should be repaired or replaced with new parts。 ②Check ring、The auxiliary sealing ring of the static ring is installed in the correct position（Such asVThe lip of the ring should face towards the pressure end）、Whether damaged or not。Joan Reinstall if installed incorrectly，If damaged, it should be heavy
2015-03-14 Reading quantity 1518
introduction：Small microwave extraction experimental equipment Open microwave heating equipment，The material does not need to be placed in a microwave heating chamber like a conventional microwave oven，Its like putting a pot on an electric stove，In the microwave extraction process，Operator can facilitate、direct、Observe material changes without obstacles、Add material or solvent、Random sample extraction，Measure temperature、Mixing material，The leakage of microwave is definitely lower than that of household microwave oven。Another feature is that it can be safely used for alcohol material handling，This is a conventional microwave oven can not compare。Can be used in colleges and universities、Laboratories of scientific research institutions and various enterprises and institutions。 microwave
2015-03-14 Reading quantity 2779
introduction：The gear reducer is an independent closed transmission device between the prime mover and the working machine，Used to reduce speed and increase torque，To meet the needs of the job，In some cases also used to speed up，speeder。 Edit the performance characteristics of this paragraph Gear reducer is a combination of reduction motor and large reducer。Couplings and adapters are not required，Compact structure。The load is distributed on the planetary gears，Therefore, the carrying capacity is higher than that of the general helical gear reducer。Meet the needs of small space and high torque output。 Gear reducer Widely used in large mines，steel，Chemical engineering，Harbor，Environmental protection and other fields。withK、Rseries
2015-03-14 Reading quantity 2900
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。]The microstructure overheating after quenching can be observed on the rough edges of the parts。But to determine exactly how overheated it is you have to look at the microstructure。ifGCr15Coarse acicular martensite appears in the quenched structure of the steel，It is quenched superheated tissue。The cause of formation may be high quenching heating temperature or heating protection
2015-03-14 Reading quantity 1437
introduction： Audi pair2011The fourth generation was launched at the beginning of the yearA6(C7)Carry out mid-term reform，It involves a four-door sedan、Wagon sumAllroad，andS6andRS6Two high-performance versions，The new car will come this year10Available monthly。 New AudiA6The lift focus is on the in-line four、V6andV8The engine has been comprehensively improved，Reduced fuel consumption，Full range meets Europe6No. Discharge standard。Besides pairA6The shape is slightly modified，Provides the latest generation of audio and video entertainment systems。 borrowA6An opportunity for medium-term reform，Audi also added two new models
2015-03-14 Reading quantity 2792
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