Wear analysis and prediction for oscillating longitudinal gear forming

与此同时，对成形零件的需求以及成本压力也在稳步增加。这要求在制造过程中增加灵活性和产量，同时提高质量或可用性。提高成形工艺的质量和成本效益的一种方法是采用适当的滑块运动，特别是振荡滑块运动。通过使用这些柱塞运动，例如，可以扩大工艺极限，可以减少成形力，并且可以影响工件的尺寸精度。然而，目前还没有使用摆动滑块运动来检验磨损行为。它们影响摩擦学条件以及刀具和工件的接触长度，在计算磨损行为时必须考虑这些因素。用Archards模型计算成形齿轮粘着磨损的初步数值研究表明，与传统的滑块运动相比，摆动成形齿轮的磨损增加。然而，该模型没有考虑摩擦学条件。在拟议的研究项目中，将研究、计算和预测柱塞振荡运动对磨损行为的影响。因此，改用了Archard和Rabinowicz的磨损模型。借助这些模型，将研究在不同的摩擦学条件和振荡运动下是否可以预测粘着磨损和磨粒磨损。

Requirements for formed parts as well as cost pressure are steadily increasing at the same time. This requires an increasing flexibility and output in the manufacturing process with simultaneously better quality or availability. One way to increase quality and cost effectiveness of forming processes is the use of adapted and in particular oscillating ram movements. With the use of these ram movements e.g. process limits can be expanded, forming forces can be reduced and the dimensional accuracy of workpieces can be affected. However, the wear behavior is not yet examined using oscillating ram movements. They affect tribological conditions as well as the contact length of tool and workpiece which have to be considered calculating the wear behavior. Initial numerical studies on calculating adhesive wear of forming gears with Archards model show an increase of wear using an oscillating compared to a conventional ram movement. However, this model does not consider tribological conditions. In the proposed research project the effects of oscillating ram movements on the wear behavior will be studied, calculated and predicted. Therefore, adapted wear models of Archard and Rabinowicz are used. With the help of these models it will be investigated whether adhesive and abrasive wear can be predicted for varying tribological conditions and oscillating movements.