主轴颈

为提高曲轴的弯曲疲劳强度，对曲轴进行了两方面的改进：一是加大了曲轴主轴颈及连杆轴颈的过渡圆角；

In order to improve bending fatigue strength , the crankshaft is impeved by two ways : . one is by increasing the transition fillet of crankshaft main journal and connecting rod journal ;

不同时段最大应力均发生在主轴颈和曲柄臂连接处，因此主轴颈和曲柄臂连接处是结构设计和优化的重点。

The maximum stress of different time interval is all occurred on the joints of main journal and connecting rod journal . Therefore , the joints are important points in the structural design and optimization .

利用ANSYS有限元分析软件分别建立曲轴连杆轴颈、主轴颈圆角滚压模型，进行变形分析计算。

The models of the connecting rods and principal axis neck are built , and the finite element analyses have been done to them by using ANSYS engineering software .

利用CAK6150P数控车床加工主轴颈当口、肩台、轴向尺寸精度较高的曲轴。

Process main , journal mouth , shoulder platform and crankshaft whose axial size needs more precision using the lathe of numerical control & CAK6150P .

基于振动诊断技术的曲轴主轴颈磨床故障诊断

Fault Diagnosis of Crankshaft Main Journal Grinder Based on Vibration Technique

柴油机主轴颈运动惯性的理论计算及诊断应用

Theoretical Calculation and Diagnosis Application on Moving Inertia of Diesel Crankshaft Journal

机油温度对主轴颈轴承润滑性能的影响

Influence of oil temperature on lubricating performance for main bearing

同时用线性弹簧来模拟主轴颈处的约束。

Linear springs were used to model the constraints of the main bearings .

曲轴主轴颈不圆或磨损

Crankshaft main journal out of round or worn

曲轴主轴颈和连杆轴颈的粗加工工艺分析

Analysis on technological processes for roughing of crankshaft

最后提出了减小曲轴主轴颈径向圆跳动误差的措施。

Finally , the measures to reduce the radial circle run-out error of the crankshaft main journal have be presented .

曲轴圆角滚压智能柔性加工机床用以对发动机曲轴主轴颈和连杆颈过渡圆角进行滚压强化，并进行滚压校直。

The intelligent and flexible processing machine is used to clad and align the necks of crank spindle and connection bar .

采用非圆磨削加工曲轴可在一次装夹完成主轴颈和连杆颈的磨削。

This paper presents that the crank journals and pins can be ground by non-circular grinding with the crankshaft being clamped once .

大量理论研究和实践表明，曲轴的疲劳破坏大多发生在曲柄与主轴颈、连杆轴颈的过渡圆角处。

A great deal of theoretical and practical researches have indicated , there exist fatigue destruction in the fillet transition places from cranks to principal axes and connecting rods .

曲柄销与主轴颈的圆角为强度较薄弱部位，在建立曲轴网格模型时，需要对这些圆角处进行细化。

The fillets of crank pin and main journal have a relatively weak strength . In establishing the grid model for crankshaft , these fillets need to be refined .

采用新研制的加硅钢片屏蔽的感应器时，彻底解决了3号主轴颈边缘回火问题。

Now a new coil shielded with a silicon steel sheet has been used , the problems mentioned above have been solved , and the tempering problem on the edge of No.

发动机曲轴的应力集中现象严重，特别是在曲柄销圆角和主轴颈圆角部位的应力集中现象尤为突出，曲轴疲劳破坏往往发生于这些区域。

The phenomenon of engine crankshaft stress concentration is serious , especially in the crankpin round and spindle neck round . The fatigue damage of crankshaft often occurs in these areas .

在考虑曲轴主轴颈、曲柄臂和连杆轴颈的变形以及重力对臂距差影响的基础上，利用有限元分析工具，改进了传统的利用测量臂距差调整曲轴中心轴线的方法。

The adjustment method of crankshaft deflection is improved by the means of FEM , in which the infection of gravity and deformation of crankshaft , crankpin and crank web are included .

讨论了曲柄臂厚度改变对结构强度的影响；主轴颈圆角半径和转速改变对最大正应力和剪应力的影响；

The effect of the crank thickness on the structure strength is discussed and the effect of the round radius of the shaft neck and the speed change on the maximum normal stress and the shearing strength are analyzed in detail as well .

这种三坐标测量加数据处理的新测量方法，不仅适于测量缸体的内孔，还可用于测量缸套的内、外圆柱面及曲轴主轴颈等一般圆柱形形体。

This new measuring method with three dimension coordinate measuring and data processing can be utilized not only for measuring cylinder bore surface but also for parts with cylindrical surface such as the inner and outer cylindrical surface of cylinder sleeve and crankshaft journals .

柴油机是内燃机车的心脏，柴油机的曲轴在燃烧爆发压力的交变载荷作用下产生强烈的振动，并通过主轴颈轴承把能量传递给机体，产生辐射噪声。

The diesel engine is heart of railway diesel locomotive , the crankshaft of diesel engine has the intense vibration under the pressure of combustion explosion as the load function alternates , which gives through the main bearing the energy transfer to block , has the radiated noise .

25F型引风机主轴轴颈损坏的原因进行分析，介绍了现场修复轴颈的方法，为延长类似主轴使用寿命提供经验。

25F double-suction induced-draft fan , and introduces the methods of repairing journal on site , to put forwards experiences for prolonging the life of the similar main axis .

因轴承润滑问题，导致二炼钢铁水预处理除尘风机主轴轴颈过热扭曲失效。

That the principal axis of dust extraction air blower for hot metal iron pretreatment in No.2 steelmaking plant twisted off is because of the lubrication failure of its bearings .

在图1-4中，曲轴实际上由以下不同的部分组成，它们分别是：主轴承轴颈、连杆轴颈、曲轴臂、轴承、平衡配量（？）以及飞轮端。

The crankshafts shown in Fig1-4 is actually made up of various parts such as main bearing journals , rod journal , crank arm , bearing , counter balanced weight and flywheel end .