gear drive

Design of Harmonic Gear Transmission Lubrication is the process of adding lubricant between two friction surfaces in relative motion, forming […]

1. Principle of starting motor driving gear to start engine The starting motor of internal combustion engine is to convert

1. Gear crack morphology After cutting, grinding and polishing, the fault gear was detected under the optical microscope. The crack

The starting motor drive gear material is 20CrMnTi, and the heat treatment process is normalizing quenching and tempering carburizing quenching

1. Hardness layer depth detection The results show that the surface hardness is 56-60hrc, the core hardness is 40-42hrc, and

1.Fracture morphology analysis 1.1 macroscopic observation of fracture The three teeth of the driving gear of the starting motor are

When the cyclic contact stress on the tooth surface exceeds the fatigue limit of the material, a micro crack appears

When calculating time-varying meshing stiffness of gear pair by energy method, the gear base is assumed to be rigid, while

In the established five-gear manual transmission model, there is coupling of finite element model, and the number of degrees of

The stiffness matrix of the rolling bearing connects the relative displacement and deflection of the inner raceway to the center

Modal flexibility is the degree to which a modal frequency of the system is easily excited by the transmission error

There are several calculation methods for gear drive errors, including finite element method and empirical analysis method.The transmission error obtained

The fluctuation of gear meshing stiffness is an important excitation source for gear vibration. Accurate calculation of gear meshing stiffness

The center support stiffness is selected according to the allowable deflection of the drive shaft. The center support stiffness meets

In the nonlinear dynamic model of yaw-torsion coupling, there are two main factors affecting the yaw vibration, i.e. the bias

In theory, the higher the gear machining accuracy level, the better the dynamic performance of the gear drive system, but

The bending and torsional vibration displacements of the concentrated mass points on each drive shaft obtained by simulation are taken

Bearing is the main component connecting the gear drive system and the box. Under the action of bearing support reaction,

Steady state condition refers to the condition under which the vehicle travels at a constant speed in a certain position

During machining and assembling of gear drive system, there is deviation between actual and theoretical center distance of gear due

Under steady-state conditions, the engine speed range of heavy-duty vehicles studied ranges from 1000 r/min to 4200 r/min.Under full throttle

The centralized parameter method is used to establish the dynamic model of gear transmission system.This method has a small amount