Load Carrying Capacity

 

In order to design gears to fit a certain market requirement, the knowledge of gear load carrying capacity is of great importance. To obtain precise results, the test rig has to be adjusted to fit a test gear in order to detect all influences on the load carrying capacity specific to that test gear. Standard testing rigs are not always suitable for this task.
Standard test rigs are normally used for the determination of isolated influences regarding load carrying capacity and efficiency. These are back-to-back test rigs with a fixed center distance. With these test rigs, influences of the material, heat treatment, running conditions and manufacturing processes on the load carrying capacity and the efficiency are tested using standard reference gears. In addition, oil tests regarding scuffing, micropitting and pitting are performed with standardized testing gears. Additionally to standard test-rigs, analogy test rigs are used at the WZL . For simulating effects of the tribological system gear the two-disk test rig is used, which represent the rolling contact at a specific location on the tooth flank to perform efficient comparisons between different materials, heat treatments and lubricants in respect to load carrying capacity as well as efficiency. To test the tooth root load carrying capacity, the pulsator test is used as an analogy test. By testing spur gears, influences resulting from different materials or heat treatments on the tooth root load carrying capacity are determined.


 
 

Optimized Flank Modifications of Beveloid Gears

The optimization of the operation characteristics of beveloid gears by using conventional flank modifications is limited. The modification of specific flank parts is especially necessary to avoid the beveloid typical point contact. more...

 

 
 

FE Tooth Root Optimization

Steadily increasing performance requirements lead to a growing need of optimization methods in drive technology. Gears as the power-transmitting components in the gearbox are of great importance regarding performance requirements. more...

 

 
 

Boundary Layers

Boundary layers protect tooth flanks from solid-state contacts and therefore influence friction and wear. The characteristics of boundary layers are influenced in the course of preconditioning (manufacturing and run-in). more...

 

 
 

Shot Peening and Polish Grinding

In several FVA projects (FVA 185 I, FVA 521 I), the potential of shot peening regarding the improvement of tooth flank load capacity could be proved. An additional improvement of the tooth flank load capacity could be achieved due to a combination of shot peening with barrel finished surfaces which was investigated in FVA 521 II. more...

 

 
 

DFG XCluster

The Research Area “Integrative Computational Materials and Production Engineering” is based on the partial integration of individual model areas within separated simulation platforms. The objective is the further development and integration into a single comprehensive ICMPE platform combining materials and machining simulation with factory and production planning. more...

 

 
 

Loads on powertrain components of wind turbines

The deformation of housing elements in planetary gear stages as well as the deformation of the planet gear itself influences the load distribution and the load sharing. more...

 

 
 

High Strength Materials for Turbo Transmissions

In gear technology, especially in turbo applications, the demand on high power density is continuously growing. Current requirement lists request an increase in pitting load capacity by 30% over the existing state of knowledge. This objective cannot be achieved using most common low-hardening steel systems in conjunction with economic, conventional heat treatment methods. more...