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introduction： GAC…SAngular contact joint 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。]The structure type and overall dimensions E (is often)&
2015-04-02 Reading quantity 1449
introduction：Noise emitted by internal combustion engines during operation。According to the sound source can be divided into mechanical noise、Aerodynamic noise and combustion noise。 Mechanical noise The noise produced by the collision of machine parts with each other during operation。In a reciprocating piston internal combustion engine, there is a gap between the piston and the cylinder liner，The lateral force changes periodically during operation,Causing the piston to knock against the cylinder wall,Form a strong source of mechanical noise。By improved design、Gap reduction，Make the piston pin hole offset properly towards the main pushing force surface of cylinder wall,Extended piston skirt size,Increase cylinder liner stiffness，Strengthening the lubrication of piston skirt can reduce the noise。Noise of valve mechanism of internal combustion engine
2015-04-02 Reading quantity 2878
introduction：The raw material used for forging is ingot、Rolled bar、Extruded wood and forged billet。Mill bar、The extruded and forged billet are respectively cast ingot rolled、Extruded and forged semi-finished products。In general，The appearance of internal defects or surface defects in ingot is sometimes unavoidable。Such as，Internal composition and tissue segregation, etc。Various defects in raw materials，It will not only affect the forming of the forging，And it will affect the final quality of the forging。therefore，Do not neglect the quality control of raw materials。 Forging defects due to the defects of raw materials usually have： 1.Surface crack The surface cracks mostly occur on rolled and forged bars
2015-04-02 Reading quantity 1551
introduction：F1 = Window magnification Alt + F1 = Screen moderation F2 = Reply zoom in or zoom out in half Alt + F2 = minification0.8times F3 = redraw Alt + F3 = Displays the coordinates of the cursor position F4 = analyze Alt + F4 = leave MasterCAM F5 = delete Alt + F5 = Delete the picture element in the window F6 = archives F7 = trim Alt + F7 = Hidden F8 = draw
2015-04-02 Reading quantity 2897
introduction：1First look at the 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。]The material used for steel，GermanyFAGbearing[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。]It is produced by our own professional steel mill，in
2015-04-02 Reading quantity 1449
introduction：Abstract:With the development of science and technology,Programmable controllerPLCWidely used in industrial control,Its reliability is directly related to the safe production and economic operation of industrial enterprises.whilePLCThe ability of the control system to resist interference is the key to the reliable operation of the entire production system.At present,Various types of programmable controllersPLCGenerally installed in the centralized control room or production site,Most of them are in the harsh electromagnetic environment formed by strong electric circuits and strong electric equipment.therefore,Want to improvePLCReliability of the control system,One is needPLCManufacturer improvementPLCHardware anti-interference capability,The second is need
2015-04-02 Reading quantity 2922
introduction：Rolling 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。]The design of the bearing structure plays an important role in the motion accuracy of the shaft and the working performance of the bearing，The bearing arrangement method needs to be considered comprehensively、Limit and adjust the axial position、Thermal expansion compensation of shaft、Adjustment of bearing clearance，Bearing fastening、Problems with lubrication and sealing。 （
2015-04-02 Reading quantity 1465
introduction： GB/T 17880.6-1999 1 Radius This standard specifies the technical conditions for riveting screws. 2 Reference standard The following standards contain provisions,Provisions that constitute this standard by reference in this standard.When this standard is published,The versions shown are valid.All standards will be revised,Parties using this standard should explore the possibility of using the most recent version of the following standards. GB/T 90—1985 Fastener acceptance inspection、Marking and packaging GB/T 1
2015-04-01 Reading quantity 2955
introduction：Some suggestions for electric forklifts First of all, the electric forklift itself,The worlds electric forklift manufacturers in the design and manufacture of electric forklifts,Always strictly in accordance with international standards,To ensure the transverse movement of the electric forklift、Longitudinal stability and the use of various measures,Such as setting up safety trellis,Cargo gantry and other structures,To protect the operator and the cargo,And in the electric forklift must have a reliable performance of the brake device。In short,The designers and manufacturers of electric forklifts have considered various safety factors in the operation of electric forklifts as much as possible。The problem is that the operator of the electric forklift is in the process of operation
2015-04-01 Reading quantity 2831
introduction： A． General rule 1. UseFUTABAStandard mold base structure module base。 2. Use normal steel or standard mold parts of the same specification、attachment。 3. All guide pins（GUIDE P
2015-04-01 Reading quantity 2806
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