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introduction：The wide application of jet molding technology Evolution of layered approach RPupsizing Applications on gradient functional materials Rapid forming of tissue engineering materials RPMThis manufacturing mode of great significance in the manufacturing industry has been produced from the present，Develop very rapidly。Compared with the past，RPMMolding process、RPsoftware、Equipment size、Forming material、Great changes and improvements have been made in engineering applications。These developments and changes are rightRPMHas important implications for the future。 The wide application of jet molding technology Jet molding technology in allRPMore attention has been paid to forming technology。Due to material
2015-03-28 Reading quantity 2864
introduction： The proportion of standard parts in the design of todays mechanical products is increasing，To avoid duplication of effort，It is urgent to establish a set of standard parts library in line with the enterprises own conditions。At the same time, the establishment and use of standard parts library can improve the design efficiency and quality of enterprises。At present, some foreign three-dimensional is more popular in ChinaCADThe software does not provide the corresponding national standard library，Or additional secondary development is required。Enterprises in the use of these software to develop mechanical products in the process of a lot of other work。Due to the variety and quantity of standard parts are many，This often makes the designer repeat the work。
2015-03-28 Reading quantity 2895
introduction：1). Plastic material The complexity of plastic material properties determines the complexity of injection molding process。The properties of plastic materials are different、Different brand、Different manufacturers、Even different batches vary greatly。Different performance parameters may lead to completely different molding results。 2). Injection temperature The melt flows into the cooled cavity，Heat is lost by heat conduction。At the same time，Heat is generated by shearing，This part of the heat may be more than the heat lost by heat conduction，May also be less，Mainly depends on the injection molding conditions。The viscosity of melt decreases with increasing temperature。In this way，Injection temperature
2015-03-28 Reading quantity 2780
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。]The cleaning of：takedownKOYObearing[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 bearing
2015-03-28 Reading quantity 1523
introduction：High voltage circuit breaker is the key equipment of power transmission，It undertakes the dual tasks of control and protection in the power grid，The operating mechanism is one of the key components of high voltage circuit breaker。“The operating mechanism is hydraulic”It is the trend of development at home and abroad。The role of the hydraulic operating mechanism is when the opening and closing command comes，Switching electrical signals are converted into mechanical signals by electromagnets，And amplified by a multistage hydraulic valve，Quickly control the hydraulic cylinder drive contact action，Complete the task of opening and closing the high voltage circuit breaker。The hydraulic operating mechanism belongs to the high-speed and high-power bistable electro-hydraulic drive system，So the research on it must focus on how high speed（The action time is measured in milliseconds
2015-03-28 Reading quantity 2880
introduction：Although China has become the worlds processing plant，But as a pillar industry of the national economy, manufacturing，Its labor productivity and beauty、o、There is still a big gap between Japan and other industrially developed countries and regions，Only thereof1/20around。The backward cutting tool and cutting technology is one of the important reasons for the low labor productivity in the machinery manufacturing industry。To transform our country from a manufacturing power into a manufacturing power，China Knife Association from the height of the historical responsibility of Chinese cutting workers put forward“Developing cutting technology、Build a strong manufacturing country”Ambitious goal。And from2005Started in the group member units“Chinese knife association20ENGINEERING”Events，That is, member units are required
2015-03-28 Reading quantity 2769
introduction： Manual manipulation of the electrode﹑Welding method using arc as heat source﹐Also known as hand arc welding(See picture Manual arc welding diagram )。The electrode and the workpiece have one electrode each﹐An electric arc ignited between them。The weld core forms the weld metal with the molten metal of the workpiece﹐The gas and slag produced by the electrode coating protect the weld pool﹑Stabilizing the arc and penetrating the alloy。Various types of carbon steel can be welded with different electrodes﹑Low alloy steel﹑Stainless steel﹑Cast iron﹑Nickel and nickel alloys﹑Copper and copper alloys﹑Materials such as aluminum and aluminum alloys。Electrode diameter has
2015-03-28 Reading quantity 2782
introduction：Up to 2009The end of the year，China Machinery Industry Association reducer branch has member units101home，Medium enterprise96home、Research institute3home、Reducer professional information network1home、Colleges and universities1home。in96There are supporting enterprises in the enterprise7home、Reducing speed machine host production enterprises89home。 101There are member units in China and state-owned holding units6home、Foreign-funded enterprise1home、All others are private enterprises。On the basis of2009Industry-wide report43A business data statistics，Whole industry43An enterprise existing staff16272people，Compared to last years industry-wide report49The data statistics of enterprises decreased
2015-03-28 Reading quantity 2783
introduction：author：Gong Jie At all times，3D CADSoftware is all about“Expensive platform”、“Professional designer”、“Expensive price”Tie together，butSolidWorksDetermined to break the rules，to“the3D CADPut it on every engineers desktop”。 Kerry Center Business Center，SolidWorksThe companys technical manager Feng Wei is demonstrating to reporters how to useSolidWorks 2003Design a complex mechanical part。I saw him move the mouse quickly，Select a graphic from the on-screen menu、stretch、rotate、Specify where to drill、label
2015-03-28 Reading quantity 2881
introduction： one、 summarize All the time，Pump power loss and pump maintenance are the two main problems for winding users。The loss of power increases the cost，The maintenance of pump in operation is always a headache for users。No doubt，Technological changes in the areas of improving pump efficiency and reducing pump maintenance costs have become the driving force for the development of pump technology。This paper analyzes the recent development of pump technology，The technical characteristics of improving pump efficiency are revealed，Variable frequency drive、Intelligent pump、
2015-03-28 Reading quantity 2792
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