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introduction： 4 Processing accuracy is increasing day by day Especially since80Since mid-decade，The automobile industry is trying to enhance the competitiveness of its cars，The manufacturing tolerances of the key parts of the engine are constantly tightened(table3)，And through computer aided measurement and analysis methods，And improve the quality of its products through equipment capability testing。At present，In the acceptance of combined machine tools and automatic lines，It is generally required that the process capability factor of the equipment should be greater than1.33，Some even require the process capacity factor to be greater than1.67，In order to ensure stable machining accuracy。It should be pointed out，adoptCp≥1.33To check the equipment，This excess
2015-05-24 Reading quantity 2854
introduction：polyester（PET）It is one of the main raw materials in the beverage packaging field，Good transparency、Chemically stable、The barrier property is relatively good、Lightweight, cheap and recyclable and other advantages，But as a beer bottle，PETThe gas barrier is still not high enough。therefore，Improving the gas barrier property of polyester bottle is one of the main research directions of beer plastic packaging。Among them, the surface coating method is the earliest、One of the most craft，It has become an important means to improve the gas barrier property of polyester bottles。 The surface coating method uses a variety of high permeability coatings and a variety of coating techniques，inPETThe inner and outer surfaces of the bottle form a very thin anti-penetration layer，every
2015-05-24 Reading quantity 2934
introduction： intro FXGA type of ventilated flat bed dryer was introduced90Material stacking dryer designed by the latest model abroad，Mainly by heat source、Control and adjust the damper、Air blower、The reversing valve and the material tank are composed，Can be used for all kinds of dehydrated vegetables、paddy、Corn、Mung bean、Red date、longan、Pepper、Dried bamboo shoots、Ginger slice、mushroom、Chinese herbs and other irregular shape of poor fluidity of the articles dry，Have simple structure，Low investment，Easy to operate，Suitable for farmers and small processing plants。 Working principle Place the material evenly in the material trough，Cold air through heat
2015-05-24 Reading quantity 2858
introduction：one、The elevator adopts the advantage of frequency conversion speed regulation: 1、Wide grid voltage：±20Grid voltage，Cope with different grid conditions； 2、Brand new pairCPUHardware control platform，The control performance is greatly improved；Achieve constant torque lift，The load lift will not be affected by network fluctuations。 3、Strong load capacity，High starting torque，The soft start of the motor is realized。 4、Can realize the motor stepless speed regulation，Low current impulse，add、Deceleration smoothing，The strength of the mechanical impact is greatly reduced 5、Easy to set up with external controls
2015-05-24 Reading quantity 2949
introduction： A small, light lifting device used to lift heavy objects(Hoisting machinery)。Its made by motor﹑The driving mechanism is integrated with the drum or sprocket﹐Compact structure﹐Light weight﹐Simple operation﹐It is widely used in production。Electric hoist is divided into wire rope type and ring chain type two。 Wire rope electric hoist(figure1 Wire rope electric hoist )。This kind of electric hoist is commonly used in squirrel cage conical rotor motor with brake﹐Cylindrical rotor motors with additional electromagnetic brakes can also be used。Deceleration is generally driven by fixed shaft external meshing gear﹐The input axis is on the same axis as the output axis。Wire ropes are usually single
2015-05-24 Reading quantity 2894
introduction：1 introduction Hot press as one of the main engines of wood-based panel production，It plays an important role in production。The machine and low failure rate is a reliable guarantee to ensure normal production and reduce product costs。Therefore, the reliability of hydraulic control system has been concerned，It is one of the targets that many hydraulic technicians have been studying。At present, the hydraulic control system of hot press manufacturers is not the same，This paper introduces a hydraulic system controlled by insert，Have high efficiency，Few control components and reliable operation。2 The function and control principle of the control system In order to reduce the manufacturing cost of hydraulic cylinder in hot press，General use
2015-05-24 Reading quantity 2881
introduction： 1．backdrop Many complex parts in the automotive industry are directly produced by investment casting，How to be high precision、The rate of、It is an important problem in the automotive industry to manufacture the master forms of these precision castings at low cost。Hand-made by traditional wood modelers，For the surface shape complex master die，Not only inefficient、Low accuracy，It is difficult to meet the production needs。Manufactured by CNC machining center，The cost is too high。therefore，Beijing Yinhua Laser Rapid Forming and Mold Technology Co., Ltd. cooperated with Jiangsu Huaneng Fine Foundry in Changzhou，The melt deposition manufacturing process in rapid prototyping technology is adopted——ME
2015-05-24 Reading quantity 2830
introduction： lead said Rapid prototyping manufacturing（Rapid Prototyping-RP）The technology is a high-tech achievement newly developed in the world，Rapid prototyping technology for short。Its core technology is computer technology and material technology。Rapid prototyping technology abandons traditional machining methods，On the basis ofCADGenerated part geometry information，Control 3D CNC forming system，Parts are formed by stacking materials by laser beams or other methods。Shape it in this way，No time consuming、Design and machining of expensive molds or special tools，Greatly improve the production efficiency and
2015-05-24 Reading quantity 2955
introduction：Bill ripping machine is a very important equipment in bill printing，Its use greatly improves the production efficiency and quality of manual bills。But early tear machines were not equipped with paperless protection devices，Cause a lot of inconvenience to production，As in the ripping process，A link of paper breaks，Due to the high operating speed of the equipment，Its hard for operators to spot，Cant stop in time，It takes a lot of time to make mistakes when you find them，It reduces production efficiency，In serious cases, it may even cause quality accidents。In view of this，It is necessary to install a protective device。 Requirements for lack of paper protection devices 1．The installed protective device shall be guaranteed
2015-05-24 Reading quantity 2860
introduction：Worn or damagedNSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]orNSKThe unit can cause your vehicle to have an inappropriate and costly failure while on the road，So far as to
2015-05-24 Reading quantity 1554
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