gear
Research and Developmeng on Auto-programming System for CNC Gear-hobbing
The gear is an important element in machine building,and gear hobbing is one of the most widely applied processing methods. The manual programming method of gear hobbing, which uses manpower to carry on processing procedure, computing , compiling programmings, inputing programmings, checking programmings and so on, usually leads to huge calculating work, high error rate [...]
Numerical Simulation of Gear Transmission Contact Problem
Contemporary research focuses on computational mechanics has been further shift from the linear problem to nonlinear problems, from the static problem to dynamic problem. Contact problem is a very common non-linear behavior.The contact problem exists widely in mechanical engineering, civil engineering, hydraulic engineering and petrochemical engineering etc. But in practice the contact problem is very [...]
Contact Finite Element Analysis of High-Speed Gear in Aero-Engine
In this thesis, the high-speed spur gear of aero-engine accessories is the research object. Static and dynamic contact analysis of gear pair are implemented using finite element analysis software ANSYS and considering the effects of friction on the tooth meshing. Then modal analysis of gear pair is carried out and a solid foundation is laid [...]
A Research on the Robust Optimization in Multi-Stage Gear Transmission System
The robust design method is a kind of engineering design method which developed in recent years, the guidelines are integrated taking into account uncertainties factors change in a small scale do not affect the sensitivity of design object and make the best design for finding the best design result in the design process.Therefore the essence [...]
Research on the Generalized Demodulation Time-frequency Analysis Method and Application to Gear Fault Diagnosis
As a universal part of transmitting movement and momentum, gear has been used in mechanical equipment widely. In many cases, gear fault is the main reason leading to mechanical equipment failure. Therefore, gear fault diagnosis is significant. In the research content of the gear’s fault diagnosis technique, the characteristics analysis of the fault is the [...]
The Noise Character Research of Automobile Transmission
The NVH performance of the transmission directly affect the ride comfort and is also the key link of automobile sound quality. The main contents of the current research for transmission are reducing the energy consumption and vibration noise in the condition of the original or higher bearing capacity.Therefore low noise and lightweight is the focus [...]
The Analysis of the Failure Mechanism of the Gears Based on Time-frequency Theory
As a power transmission components, the gear and gear box play an indispens-able role in large rotating machinery and the damage caused by their fault would be very serious.At present, the gear failure research at home and abroad mainly focus on the specific methods of failure analysis, and the failure mechanism is less researched. In [...]
The Dynamic Study and Optimization Design of the Slewing Bearing of the Hydraulic Pile Driver
Pile-driving machinery is an individuation product, which has to be designed according to the applications and the operating requirements. Slewing bearing is one of the important components of the pile-driving machinery. The designed intensity and dynamics of the slewing bearing is directly related to the working property and the safety of the machine. Researches show [...]
Based on UG Platform in the Secondary Developmentmirror Taper Inclined Gear Design and Research Applications
Based on parametric drive the product design ideas is the gear design and manufacture the new direction of development of CAD system. In product development process effective will original engineering design experience, design achievements and industry knowledge into existing product design development, through the knowledge of the “recycled” enables designers to greatly reduced the creative [...]