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introduction：Test method、The dynamic performance of double-arc gear drive under different working conditions is analyzed by changing the tooth width of the test gear。Test procedure3Proceed in stages，Each stage corresponds to the test of a gear dynamic performance index under the tooth width。In order to ensure that the accuracy of the gear in each test stage is as much as possible，Gear coloring check after finishing gear running，The first phase of the test is performed under conditions indicating good contact with the contact band。
2014-12-10 Reading quantity 3029
introduction：For thin oil centralized lubrication reducer system，Due to the lubricating oil or tank temperature has more stringent requirements，A cooler is usually used（Steam cooling）Or cooling coils（Water cooling）Cool it。Although the gear oil is required to have better anti-emulsification properties，But after a considerable amount of water has penetrated into the oil，Easy to emulsify oil products，Gear oil emulsified with extreme pressure antiwear agent，Additives are separated by hydrolysis or precipitation and lose their original properties，And produce harmful substances，The gear oil deteriorates rapidly、Out of service performance。Therefore, emulsified oil can never be used。
2014-12-12 Reading quantity 3037
introduction：First, the overall error curve of the gear is mapped（Referred to as the overall error diagram），All kinds of single error and comprehensive error are analyzed，Evaluating gear accuracy，Gear measurement techniques to analyze transmission quality and process errors。The global error diagram is a type of error that shows the shape and position of all the working tooth surfaces on a certain cross section or tooth width of the gear under test,Im going to draw it as zero in the same coordinate,And according to the tooth surface of each point meshing sequence of the graph。1970Huang Tongnian, a Chinese engineer, invented the overall error chart of surveying and mapping、Transmission quality analysis and process error analysis and other methods，The global error measurement technique is developed systematically。This technique has been applied to the measurement of cylindrical gears，And began to extend to bevel gear measurement。
2014-12-17 Reading quantity 3019
introduction：Couplings often have the following four failures： 1. The tooth surface of the coupling is badly damaged。 2. The axial displacement of coupling gear ring is large，Cant even mesh。 3. The coupling has broken teeth。 4. Coupling bolt is broken。 The causes of these faults mainly include the following two aspects：
2014-12-17 Reading quantity 3126
introduction：This paper combinesVBThe advantages and disadvantages of calculation and data processingAutoCADAdvantages in precise drawing，adoptVisual Basic6.0actuateAutoCAD 2000The 3D animation simulation of gear machining is realized，It has strong practicability。This paper introduces the realization steps of 3D parametric modeling and 3D animation simulation，It has a certain representativeness。 one、introduction Gear machining animation simulation is an important part of gear design，There have been several articles on the subject。Guo Xiaodong is based onAutoCADenvironmentalObjectARXSoftware package，withC++Language inAutoCADThe simulation of bevel gear cutting process is realized under the environment；Luo Qingsheng is here3DSMAXThe working animation of the gear mechanism was developed in the environment；Feng YanzaiCADUnder the circumstance，withAutoLispThe simulation and demonstration program of gear machining by the model method is established。
2014-12-18 Reading quantity 2956
introduction：yuanhu chilun chuandong Arc gear drive circular profile gearing The tooth profile is circular arc point meshing gear drive。There are usually two forms of engagement：The pinion has convex circular arc tooth profile，The big gear has concave circular arc tooth profile，Single arc gear drive；big、The pinion has a convex arc tooth profile outside the respective pitch circle，The part within the pitch circle is made into a concave arc tooth profile，Called double arc gear drive（figure1[Two forms of arc gear meshing]）。
2014-12-18 Reading quantity 2960
introduction：The rotation of the reducer is mainly achieved by the rotation of the gear，Install it on mechanical equipment，Can effectively adjust the use of equipment speed。But I wonder if my friends have noticed，In all kinds of reducer，Bevel gears are used，Spur gears are rarely used。 The reason why the reducer uses helical gear：Spur gears are not used in the reduction mechanism——If the spur gear is mounted to the reducer，There are obvious drawbacks，Immediate vibration。Because of vibration、design、Manufacturing and deformation effects，One impact per tooth，All very strong，The noise generated during vibration is also larger，Therefore, the vast majority of reducer will choose bevel gear。
2014-12-21 Reading quantity 3066
introduction：In gear drive﹐The maximum allowable load that a gear can transmit before failure。The load carrying capacity of the gear depends on the size of the gear﹑structure﹑material﹑Manufacturing level﹑Lubrication condition﹑Permissible level of damage﹑Required life and reliability, etc。 Failure mode The tooth ring of a gear﹑Parts such as the spoke and hub are usually designed by experience﹐The safety factor of structure size is large﹐There is generally little damage。The failure of the gear mainly occurs on the teeth。The main failure form of gear teeth is tooth fracture﹑pitting﹑Glue together﹑Wear and plastic deformation(figure1 The main failure form of gear teeth )。merely﹐The occurrence of each failure form of the gear teeth is not isolated﹐Once the tooth surface is pitted or glued﹐It will increase the wear of the tooth surface﹔The severe wear of the tooth surface will lead to the fracture of the tooth。
2014-12-22 Reading quantity 2977
introduction：1）Classification of gear oil Gear oil specifications、Quality requirements and precautions1CRBIndustrial gear oil2CKCMedium duty industrial gear oil3CKDHeavy duty industrial gear oil4CKEWorm gear oil5CKHOrdinary open gear oil6CKJExtreme pressure open gear oil7CKMSolvent dilution type open gear oil2）Gear oil characteristics1The gear equivalent curvature radius is small：Tooth facing slide，Bruise easily，wear。2The contact pressure of the gear is very high：400-100MPa，Hyperbolic reach3000 MPa，Easy pitting and gluing。3Intermittent lubrication：Re-establish the oil film whenever engaged，place
2014-12-22 Reading quantity 1739
introduction：In a variety of equipment using the reducer，Main motor、Reduction gear、Gear mounts are usually connected directly with couplings to transfer power，Among them, arc gear coupling is widely used in high-power equipment。The ends of the coupling are usually close to each other，There are also two axes with a certain distance between the ends，The coupling should have a certain degree of elasticity，Can absorb part of the impact load，One side to the adjacent device。 Arc gear coupling（Hereinafter referred to as arc tooth coupling）It is developed from the common gear coupling。Because the coupling is machined into an arc inside and outside，Therefore, the axis of the connected two axes allows for large inclination angles and radial displacements，Thus, the application range of gear coupling is expanded。 The curved-tooth coupling is used most in steel rolling machinery，Except for some large blooming mills、Slab mill outside，The gear coupling can be used in the main drive of all rolling mills。On other auxiliary machinery
2014-12-23 Reading quantity 3113
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