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introduction： Standard annotation type，This is the type of annotation we often use。The coordinate marking is another marking form which is convenient for NC machining。PRO/ETwo annotation methods can be converted。 · 3.2 Conversion of standard annotation to coordinate annotation Look out： Dimensions converted to coordinates must be linearly annotated，The following dimensions cannot be converted into coordinates： The diameter displayed as a linear dimension Centerline dimension
2015-03-25 Reading quantity 2904
introduction：The rotary cylinder drying technology of KensI Tianli： On the basis of the conventional rotary dryer has been successfully and effectively innovated，Has a number of patented technologies，A new type of rotary cylinder dryer has been developed，It greatly broadens the use range of conventional drum，Large handling capacity in retention drum、The advantages of running balance at the same time，Able to handle viscous materials，Paste material，It can even handle liquid materials，Widely used in chemical industry、Brew (wine, etc.)、manufacture、pharmacy、fertilizer、Urban sludge treatment and other aspects。 ①.Feed the winch②.Air inlet③.Air distributor④.Wet feed⑤.shaft
2015-03-25 Reading quantity 2789
introduction：Applicable model： 1、 Single arm planer：B1010（7134），B110，B1010A（7110），B1012A，B1016A，B1016， 2、 Double housing planer：B210，B2010（7231A）B2010A，B2151，B2152，B2016A（7216），B2020，B220（7256），B2025，BQ2010A。 one、 Conscientiously implement《General operating rules for metal cutting machine tools》Relevant provisions。Conscientiously implement the following relevant provisions。
2015-03-25 Reading quantity 2885
introduction：Taixi Shuifa 《The Tessie water Method》 Famous works on hydraulic engineering technology。It was taught by the Italian missionary Xiong Sanba，Xu Guangqi according to the notes，And combined with Chinas hydraulic machinery after the experiment，Compile into book。Full text six volumes，It mainly describes Hengsheng（Reciprocating pump）、Dragon-tail car（Screw water truck）、Alioth（Double cylinder reciprocating pump）The structure and manufacturing method of hydraulic machinery，And basic methods of building cisterns and sinking Wells。In addition to text，And there are pictures。Written in the Ming Wanli forty years(1612)。Existing late Qing Shuoye Shan Fang Fuming engraving。Have been paid《Four storehouses
2015-03-25 Reading quantity 2785
introduction：assemblydrawingAssembly drawing autotoolchangecycleAutomatic tool change time cycle beamtransom bendingmomentBending moment bendingstressBending stress bottomingAt the end of* bucklingLongitudinal bending chamferingBevel cut channelgroove
2015-03-25 Reading quantity 1418
introduction：The thermal field of specific internal energy distribution during casting and solidification was analyzed,Determine the benign thermal field under various process conditions、Bad heat field and its process heat element and bad heat field element、Degree of uniformity of thermal field，The main causes of casting defects are analyzed，Corresponding technological measures are taken to eliminate the influence on thermal field distribution,Sound casting。pass3Analysis of a casting example，The practical application of the thermal field analysis method is explained。However, the thermal field analysis method of the casting process depends on the knowledge of fluid mechanics and rich casting experience,Only qualitative analysis can be performed at this time，It is not yet possible to perform quantitative analysis or implement computersCAD。 in
2015-03-25 Reading quantity 2880
introduction：jiankaixian involute involute When a straight line moves along a fixed circle on a plane for pure rolling，The trajectory of any point on this line is the involute of the circle(See picture[Formation of involute])。This moving lineBKCalled occurrence line，Fixed circleO 1Base circle。K Trajectory ofA1KforO1Of the involute。Larger base circle，The involute is at some point at the same pressure AngleKThe larger the radius of curvature is，Such asB2KGreater thanB1K。As the base circle approaches infinity，BKApproach infinity，The involute also tends to be straightAK。There is no involute in the base circle。Involute is often used in gears
2015-03-25 Reading quantity 2787
introduction：The throttle principle is used to reduce the inlet pressure of the fluid and automatically maintain the control valve at a certain required outlet pressure、Water and oil supply systems。For example, the oxygen in the oxygen cylinder cannot be used directly due to high pressure，Need to install a pressure reducing valve to use。There are many types of pressure reducing valves。There are two commonly used film type and piston type。Diaphragm type with auxiliary valve(Pilot valve)Both with and without auxiliary valves，Piston types are generally equipped with auxiliary valves。figure[Film type pressure reducing valve diagram]It is a pressure reducing valve with auxiliary valve。Turn the adjusting screw to open the auxiliary disc，Fluid enters below the large diaphragm（Or above piston），Due to large diaphragm（
2015-03-25 Reading quantity 2789
introduction：(1)Numerical control machining technology Numerical control machining technology is the sum of various methods and technical means used in machining parts with numerical control machine tools，Applied to the whole numerical control machining process。Numerical control machining technology is accompanied by the emergence of numerical control machine tools、An application technology developed and gradually perfected，It is a summary of a large number of CNC machining practices。 (2)Numerical control machining process Numerical control machining process refers to the use of cutting tools on CNC machine tools to directly change the shape of the machining object、dimension、Surface position、Surface state etc，The process of making it into finished and semi-finished products。Numerical control machining technology
2015-03-25 Reading quantity 1534
introduction： Laser hardening technique，It uses a focused laser beam to rapidly heat the surface of a steel material，Make it undergo a phase change，The process of forming a hardened martensite layer。Laser quenching has a high power density，Fast cooling speed，No cooling medium such as water or oil is required，Is clean、Fast quenching process。 Induction hardening、Flame quenching、Compared with carburizing and quenching process，Laser hardening hardening layer is uniform，High hardness（Generally higher than induction hardening1-3HRC），Small workpiece deformation，The heating depth and heating trajectory are easily controlled，Easy to automate，It is not necessary to design according to different parts sizes as induction hardening
2015-03-25 Reading quantity 2773
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