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introduction：1、Comply with casting equipment general operating procedures。、 2、And you have to do it before you go to work： a、 Check belt tightness and wear，If too tight、Too loose or badly worn，Appropriate adjustment or replacement should be made。 b、 Check the grinding wheel for cracks or notches，Strictly forbidden to use； c、 Check that the shield is safe and secure，If not safe and reliable，Maintenance personnel should be notified to repair。 d、 Idle running2-3minutes，Just make sure everythings okay，Before production can proceed。 3、It must also be observed at work： a、 While driving、Fan opening，Rear open wheel。Parking time，Stop grinding wheel，Last stop
2015-05-15 Reading quantity 2796
introduction：Common compact defects and their causes are as follows： （1）Uneven density。 The reasons are as follows：1）The compression ratio of each part is inconsistent；2）Mold finish is low，Increased friction resistance；3）underlubrication；4）The part size is not reasonable（The aspect ratio is too large，The long wall thickness ratio is too large……）；5）Wrong pressing。 （2）crack。 The reasons are as follows：1）Uneven density；2）The powder has poor formability，High elastic after-effect of compact；3）The release mode is wrong；4）Die stiffness difference；5）The mold has an inverted taper。 （3）The edges and corners fall off。 The reasons are as follows：1）Powder formability
2015-05-15 Reading quantity 1554
introduction： According to the use of parts and use conditions and environmental conditions to select the size、precision，fitSKFbearing[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。]Is to ensure the bearing life and feasibility of the premise。 1、 Site of use： Tapered roller bearings are suitable for bearing joint radial and axial loads which are mainly radial loads
2015-05-15 Reading quantity 1567
introduction：Due to rollFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]The type of、Structural pattern、Tolerance class、Technical requirement、Different materials and batches, etc,The basic production process is not exactly the same。 one、Various kinds ofFAGbearing[FAGbearing:The main shaft bearing is made of a solid inner ring、Outer ring、The ball、And a single row angular contact ball bearing consisting of a cage assembly with a solid window cage。]Machining process of main parts: 1．The processing of the ring: FAGbearing[FA
2015-05-15 Reading quantity 1562
introduction：Abstract：T=0It is a contact type stipulated in international standardsCPUCartoon communication protocol。Combined development practice，Divide the agreement into four levels，Mainly fromCPUThe Angle of the card starts，Binding terminal，The characteristics and implementation process of the protocol are described systematically from two aspects，coalesceT=0The advantages and disadvantages of the protocol are analyzed，At present, the development results have been applied in practice。 keyword：Card operating system（COS）Terminal application layer（TAL）Terminal transport layer（TTL）Application protocol data unit（APDU）Transport protocol data unit（TPDU） ICCards are being used more and more widely，from
2015-05-14 Reading quantity 2729
introduction：The planing method must be developed for different surfaces，And different surfaces can be processed with different planing tools。 Planer commonly used plane planer、Offset tool、Angle offset tool、cutter、Forming planing knife and so on。According to the plane tilt direction is different，Can also be divided into the left side of the knife、Right offset tool。 one、Planing plane The horizontal plane can be either the machined surface needed for the part，It can also be used as a reference surface for finishing。 Horizontal rough planer using plane planer，Finishing planer with round head finishing knife。The amount of planing is generally：Planing depthapfor0.2～0.5
2015-05-14 Reading quantity 2844
introduction： Through the analysis of mechanical wave of drawing frame，It is considered that the main cause of the mechanical wave is the roller jumping or swimming caused by the lack of oil or the wear of the center hole of the shaft head。inFA302Type sumFA306ATest and popularize the new type of drawing roller core bushing，Use no refueling design，Reduce tampon pollution、Oil defect，Eliminate the mechanical waves caused by roller jumping and moving，Reduce maintenance effort，Save machine material consumption，Improve the quality of cotton yarn。 Jointing process is an important process in spinning production，The main function of the drawing frame is to draw the sliver together，Achieve improved fiber parallel
2015-05-14 Reading quantity 1527
introduction：Cold die design one、Scheme design：On the basis of process analysis，Comprehensive consideration of product output and precision requirements。Properties of the materials used，The technical strength of the factory，Equipment and mold manufacturing situation，Determine the process specification of the workpiece and the die structure of each process。 Structural design：On the basis of scheme design，Further design the specific structure size of each part of the mold。 （one） Blanking process analysis Analyze the structure shape of punching parts，Dimensional accuracy，Conformity of material，Punching pressure process requirements，Thus, the possibility of blanking is determined。 （two） Determine the blanking process
2015-05-14 Reading quantity 2810
introduction： Hefei electromagnetic clutch to give you a brief introduction to what is a carburetor。 The carburetor is under the action of the vacuum generated by the operation of the engine，A mechanical device that mixes a certain proportion of gasoline with air。The carburetor is a precise mechanical device，Its important role in the engine can be called the engines“heart”。The complete device shall include a starting device、Idle gear、Medium-load device、Full load plant、Accelerating device。The carburetor will be based on the different operating conditions of the engine，The corresponding concentration is automatically matched，Output the appropriate amount of mixture，In order to make out the mixture
2015-05-14 Reading quantity 2821
introduction： The mechanical part and auxiliary device are the important components of CNC machine tool。among，The mechanical part mainly includes：Machine tool spindle unit、Ball screw nut pair、rail。The auxiliary devices mainly include：Numerical control indexing head、Automatic tool changing device、Hydraulic pressure system and cooling lubrication device。therefore，Their daily maintenance and maintenance is one of the entire maintenance and maintenance work of CNC machine tools。 one、Mechanical part maintenance and maintenance The maintenance and maintenance of the mechanical part of CNC machine tools mainly include：Machine tool spindle unit、Feed transmission mechanism、Guide rail and other maintenance and maintenance。
2015-05-14 Reading quantity 2899
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