The demand for continuous improvement concerning economicefficiency of products and processes leads to an increasing costpressure in manufacturing and design of power transmissions. Also,the power density of gears has been increased which leads to ademand for higher gear quality. In more and more cases this canonly be achieved using hard finishing processes. The demand forhigher gear qualities leads to an increased use of gear grinding,which incurs the risk of thermal damage, such as grinding burn onthe gear flank. The influence of thermal damage on the set inoperation is nevertheless hard to judge so that damaged gears areoften scrapped. This leads to increasing failure costs. The lack ofknowledge of the effect of grinding burn on the load carryingcapacity of gears leads to the point that the same degree of damageis judged differently by different companies. Therefore it isnecessary to do trials with thermally damaged parts in order toknow how much a certain degree of thermal damage influences theload carrying capacity. The investigations described in this reportare aimed at determining the load carrying capacity of parts underrolling stress. Thermally damaged rollers are employed on a rollertest rig, since with this analogy process the part geometry iseasier to describe and easier to damage reproducibly.
- Edition:
- 07
- Published:
- 10/01/2007
- Number of Pages:
- 13
- File Size:
- 1 file , 810 KB
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