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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 1740
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 3116
introduction：1、Gear and shaft assembly： The corresponding assembly method is adopted according to the matching property of gear and shaft，Pay attention to the operation method，Avoid gear eccentricity，skew，The end face is not tight against the shoulder and other installation errors，Gear pair requiring high precision，Check the radial runout and the circular runout of the end face。 2、Assembly method of the gear shaft assembly into the box： According to the structural characteristics of the shaft in the box，Holes should be checked before assembly
2014-12-26 Reading quantity 1590
introduction：A hyperbolic surface consisting of two pitch surfaces(The surface of revolution of a hyperbola)The gears consist of a staggered shaft between the gear drives(See picture Hyperboloid gear transmission principle )。Two alternating axesⅠ-ⅠandⅡ-ⅡThe shortest vertical distance betweenO 1O 2﹐It is equal to the sum of the radius of the neck of the two doublets。Straight lineⅢ-ⅢpassO 1O 2on-lineC Point and perpendicular toO 1O 2﹐It and axisⅠ-ⅠandⅡ-ⅡThe Angle betweenβ 1andβ 2。
2014-12-29 Reading quantity 2939
introduction：Measurement of gear parameters in length measurement technology。There are two methods to measure the error of cylindrical gear and bevel gear: single measurement and comprehensive measurement。 Single measurement Mainly measured tooth profile error﹑Cumulative pitch error﹑Pitch deviation﹑Gear direction error and gear ring radial runout, etc。 Tooth profile measurement figure1 Working principle of tooth profile measurement Is the principle of gear tooth profile measurement。The commonly used measurement methods are generative method and coordinate method。Generating method﹕The diameter of the base disk is equal to the theoretical base circle diameter of the measured involute。When the ruler drives the base disc which is closely tangent to it and the measured gear which is coaxial mounted with the base disc to rotate﹐The cutting edge of the measuring lever, which is in the same plane with the working face of the ruler, is a theoretical involute relative to the trajectory of the rotating motion of the measured gear。
2014-12-29 Reading quantity 2958
introduction：The influence of gear machining error on noise。Reducing and controlling gear noise is the fundamental of reducing reducer noise。To reduce gear noise，The structural design and gear precision should be considered from two aspects。 1
2014-12-30 Reading quantity 3019
introduction：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 )。 Single arc gear drive The working profile of the convex teeth of the pinion is outside the pitch circle﹐The center of the tooth profile circle is on the pitch circle﹔The concave teeth of the big gear work
2014-12-31 Reading quantity 2934
introduction：Gear coupling By having inner teeth﹑A movable rigid coupling consisting of an outer sleeve with flange and an inner sleeve with outer teeth(See picture Gear coupling diagram )。The hub of the inner sleeve is respectively connected with the drive shaft and the driven shaft﹔The two outer sleeves are fastened together by bolts outside the flange。Working hours﹐The inner teeth engage with the outer teeth。Within the﹑The pressure Angle of the outer teeth is mainly used20°Involute tooth shape﹐The clearance of the tooth side is larger than that of the general gear pair。The outer tooth top round bus is made of spherical surface﹐The spherical center is on the axis of the gear﹐The relative radiality of the two axes is therefore compensated﹑Axial direction﹑Characteristics of angular displacement。 To improve the contact conditions of the teeth﹐Increase the bearing capacity of the coupling﹐Increase the allowable relative angular displacement of the two axes﹐Drum teeth can be used﹐About to outer teeth teeth
2015-01-02 Reading quantity 3060
introduction：Optimal design of bevel gear transmission：Since the20century80Since the beginning of the decade，ACServo technology has been rapidly developed，today，It has become the technology of choice for finishing equipment。Transmission technology has also improved with the development of servo technology，The best-selling transmission device is the coaxial transmission device，In particular, planetary gearing。 So far，Bevel gear drives used in servo technology are generally coaxial drives with only one Angle，In fact, it belongs to a combination of two drives。This way leads to the selection and use of bevel gear drives when，There are a lot of problems to face。Especially the small ratchet problem of the bevel gear transmission device，Because the transmission ratio is small、Loud noise，So the transmission ratio of the bevel gear can only be seti = 3or4。Then there is the cost，Because one or two grades must be added for some use cases，It is easy to increase the cost。So in the market something like“Cone type planetary gear reduct
2015-01-04 Reading quantity 2951
introduction：luoxuan chilun chuandong Helical gear drive crossed helical gearing A gear drive between alternating shafts consisting of two paired helical gears，Also known as staggered shaft bevel gear drive。figure[Helical gear transmission principle]In the，The tangent point of a bisection circle is used as the common section of a bisection cylinder,The Angle between the axes of the two wheels projected on this plane is called the axial intersection Angle[33]When two rounds of spiral Angle1、2In the same direction,|[33]|＝|1|＋|2|；When the spiral angles of the two wheels are opposite，
2015-01-06 Reading quantity 2981
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