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2015-04-18 Reading quantity 2814
introduction：Plain 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。]Its face contact，Therefore, a certain oil film should be maintained between the contact surfaces，Therefore, the design should pay attention to the following problems。 1、The oil film should be able to enter the friction surface smoothly。 2、Oil should enter the bearing from the non-bearing surface area。 3、Do not leave the full ring oil groove open in
2015-04-18 Reading quantity 1567
introduction： A pair of continuously tangential curves on two members to achieve a given law of motion。The contact between curves and cusps can be seen as a special case of conjugate curves。In the gear drive, one gear pushes another gear to rotate and in the CAM mechanism, the CAM pushes the follower to move according to the required regularity﹐Its all done by relying on conjugate curves。In terms of gearing alone﹐The rotation of the required transmission ratio can be obtained by making a pair of conjugate curves of the tooth profile(Such as cylindrical gear transmission)﹐Or carry out the motion conversion between rotation and movement(Such as gear and rack drive)﹐Variable motion is also available(If not circular gear drive)Etc.。 Motion as a plane
2015-04-18 Reading quantity 2787
introduction： Four reverse software introduction one、 Imageware Imageware From the United States EDS Company produced，Is the most famous reverse engineering software，Is being widely used in cars、aviation、spaceflight、、mould、Computer parts and other design and manufacturing fields。The software has a large user base，There are... abroad BMW、Boeing、GM、Chrysler、Ford、raytheon、Toyota And other famous international companies，At home, there is Shanghai Volkswagen、Shanghai Jiaotong University、Shanghai DELPH
2015-04-18 Reading quantity 2869
introduction： electrochemistry﹑Special processing of cutting metal materials by the combined action of electric heating and mechanical force。Anode mechanical cutting method is the Soviet people in20century40epochal。figure Anode mechanical cutting principle The picture shows the principle of anode mechanical cutting。Using metal steel bands or disks as cutting tools(Material is carbon steel or brass)﹐It is connected to the negative terminal of the DC power supply as a cathode。The workpiece to be cut acts as the anode﹐Connected to the positive terminal of the DC power supply。Supply water glass at the incision during cutting(Sodium silicate)electrolyte。
2015-04-18 Reading quantity 2792
introduction：Pawn 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。]When the temperature rises，First determine whether it is a mistake，If indeed raised，The following should be done： 1、Bearing installation position is incorrect，Will cause larger ball end face withTIMKENAxial force of inner seat ring and outer seat ring stop of bearing seat，Overheat bearing。 2、operational
2015-04-18 Reading quantity 1566
introduction：blueing The steel is heated in air or immersed directly in a concentrated oxidizing solution﹐A material protection technique that produces an extremely thin oxide film on its surface﹐Also known as blackening。Bluing of steel parts can be carried out in molten salts of sodium nitrite and sodium nitrate﹐Can also be in high temperature hot air and500℃The above is carried out in superheated steam﹐It is more commonly heated in concentrated caustic soda with sodium nitrite。The composition of the solution when blue﹑The reaction temperature and time depend on the composition of the steel matrix。The bluing film is composed of magnetic iron oxide﹐The thickness is...0.5～1.5micron﹐Color is related to material composition and process conditions﹐Grayish black﹑Jet black﹑Brilliant blue。
2015-04-18 Reading quantity 2727
introduction：INAAngular contact ball 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。]There are several types of lubrication，And by modelINAAngular contact ball bearings and all typesINAAngular contact ball bearings are also different in the use of lubrication，This is more conducive toINAMaximize the service life of angular contact ball bearings，Its the nature of mechanical devices
2015-04-18 Reading quantity 1551
introduction： one outline Heat treatment of metal is to heat the metal workpiece to a suitable temperature in a certain medium，And keep at this temperature for a certain time，A process method of cooling at different speeds。 Metal heat treatment is one of the important processes in mechanical manufacturing，Compared with other processing technologies，Heat treatment generally does not change the shape of the workpiece and the overall chemical composition，But by changing the internal microstructure of the workpiece，Or change the chemical composition of the workpiece surface，Give or improve the performance of the workpiece。It is characterized by improving the intrinsic quality of the workpiece，And this is generally not
2015-04-18 Reading quantity 2730
introduction：Steel is iron、An alloy of carbon and small amounts of other elements。Stainless steel or10.5Corrosion resistant alloy steels with chromium gold content or above are the generic term for these metals。It should be remembered that stainless steel does not mean that this type of steel does not rust or corrode，Its just that its much more resistant to corrosion than alloys without chromium。Except for the chromium metal，Other metallic elements such as nickel、molybdenum、Vanadium can also be added to the alloy to change the properties of the alloy steel，To produce different grades、Stainless steel with different properties。For different purposes and places of application，Carefully select the tool made of stainless steel with the most suitable performance，For your particular job
2015-04-18 Reading quantity 2799
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