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introduction：HIWINThe preloading of the guide rail is closely related to the accuracy，Put simply：precompression，That is, the preload。Ensure that when working force，The guide rail is still in the state of no clearance，enhanceabbaGuide rigidity and accuracy。
2015-04-03 Reading quantity 17012
introduction：Although nowCAMProgramming has become quite common，But manual programming will still have a wide application market for some time，Therefore, the numerical control turning programming skills described in this paper are of practical significance。The principles set out in the text、order、The tips and precautions are obtained and verified by the author through practice，So its very practical。 With the rapid development of science and technology，Social structure of mechanical products、property、precision、Efficiency and variety are increasingly demanded，The proportion of single and small and medium-sized batch products is increasing。Traditional universal、Special machine tools and process equipment have not been well adapted to high quality、
2015-04-03 Reading quantity 2790
introduction：one、Basic operation of fitter Fitter is the main hand-held tool to clamp the workpiece on the vice of the fitters bench method of cutting，It is one of the important jobs in machinery manufacturing。The basic operation of the fitter can be divided into： 1.Auxiliary operation Instant line，It is the operation of drawing the processing line on the blank or semi-finished workpiece according to the pattern。 2.Machinable operation chipping、sawing、File away、tapping、Casing thread。borehole（reaming、reaming）、Various operations such as scraping and grinding。 3.Assembly operation Ready assembly，The process of assembling parts or components into machines according to the technical requirements of drawings。
2015-04-03 Reading quantity 2778
introduction： Dynamic characteristic Although some traditional factors are still important，But they are only biased towards valves“static”property。Actually they are in“workbench”The result obtained by measuring the valve above，But such a result is difficult to explain what kind of performance the valve will show under actual operating conditions。Traditional theory holds that，Careful adjustment of static factors will make the valve（Thus also makes the whole loop）Get good performance。however，Now we realize that this is not always the case。 Thousands of performance checks conducted by researchers and manufacturers prove it，As many as50%In use
2015-04-03 Reading quantity 2785
introduction：（1）Stamping in the automotive industry。To draw mainly。In our country, this part is mainly concentrated in the automobile factory、Tractor factory、Aircraft manufacturers and other big factories，Independent large stamping and drawing plants are still rare。 （2）Automotive and other industry parts stamping。Mainly punching and shearing forming。Many of the enterprises in this part are classified as standard parts factories，There are also some independent stamping plants，At present there are many such small factories around some car factories or tractor factories。 （3）Electrical parts stamping factory。Such factories are a new industry，Developed with the development of electrical appliances，This branch is mainly concentrated in the south。 （4）Daily necessities
2015-04-03 Reading quantity 2789
introduction： recently，《2011-2015China reducer industry market depth research and strategic research consulting report》Publish in Beijing。This report makes a macro analysis2010-2015The development of the worlds reducer industry as a whole and some regions、Chinas reducer industry macro development environment、China reducer industry overall development status。For the future development trend of the industry，It is stated in the report，In recent years, Chinas reducer industry has made great development，But there are also some problems in the development of the industry，There is still a big gap compared with foreign countries。meanwhile，“The 12th Five-Year Plan”It is clearly pointed out that we must continue to develop the market
2015-04-03 Reading quantity 2793
introduction：1、Gear overhaul： ⑴Gear damage form： A、Broken tooth：This is mainly due to improper operation caused by the impact，Caused by heavy loads，The gradual expansion of small cracks caused by quenching and fatigue of the material is also the cause of broken teeth。 B、Poor tooth contact：Both gears are in the process of meshing，The tooth surface cannot be reached along the direction of tooth length and tooth height Stipulated good contact。This phenomenon will accelerate the local wear of the tooth surface or cause accidental damage。The reason is that the center distance of the two gears meshing or the parallelism of the two axes is out of sync，And gear manufacturing error is large。 C、Tooth surface wear：One refers to long-term normal wear and tear and more than one
2015-04-03 Reading quantity 2905
introduction： 1、System introduction Beijing subway5Line number south from Songjiazhuang，North to Taipingzhuang North Station，Line length approximation27.6km。Full-line arrangement22Base station，among16substation，They are Song Jiazhuang，Liu Jiayao Kiln、Ulmus papyracea、East Gate of Temple of Heaven、Magneto port、Chongwenmen、Dongdan County、Dengkou、A surname、Zhang Zizhong Road、Beixin Bridge、Yonghe Lama Temple、Heping Li North Street、Heping West Bridge、North Earth city East Road、aspen，Line length contract16.9km。The average station spacing is0.9km，Two of the intervals are longer than that1.5km，Maximum distance between stations1.7km。6Seat ground station，They are Datun、Big sheep
2015-04-03 Reading quantity 2783
introduction：How does it work Extruded blow molded plastic bottles are made ofLeeContainercorporation（Georgia, USAHomervilleThe city）supplied。After the molding，The inside and outside walls of the vessel are also treated with fluorine gas，So thatHDPEChemicals containing solvents are acceptable。LeeThe company will use reusable corrugated boxesFType bottles shipped toMicroFlocorporation。 inSparksFactory，A worker removes plastic bottles from corrugated boxes，Place on the feeding table with the handle facing downstream12feet
2015-04-03 Reading quantity 2785
introduction：1.Lubrication of iron making and sintering equipment Iron making and sintering equipment such as coking machines、Coke pusher、Limestone and ore sintering equipment、Large blower、Ore bucket traction wire rope and other furnace top equipment、cupola、Blast furnace、Belt conveyor and so on，Mostly exposed to air and dust、Corrosive dust environment，Susceptible to corrosion、Abrasive wear and cavitation。To which the corresponding 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
2015-04-03 Reading quantity 1461
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