Leather, which is regularly tanned from whole hides of up to 5 m2, needs a constant thickness over the entire surface in order to be processed into high-quality consumer goods such as shoes, furniture and car interiors. Precise adjustment of the thickness is achieved by shaving. On an industrial scale, rotating knife rollers are used to remove chips from the flesh side of semi-finished leathers whereby adjusting the specified thickness and generating a smooth surface. Care must be taken to prevent the temperature from rising above the denaturation temperature of the leather during shaving in order to avoid any loss of quality. Beside this, temperature rise is always a sign of friction showing avoidable energy expenditure. In order to localize the source of friction during shaving, actual temperature development at the roller knife is studied. Different measuring methods are used to evaluate the temperature increase at the blade roll of the shaving machine. The finite element method is used to thermally simulate the process. Measured temperatures, the geometry of the blade roll and process data are taken into account for modelling the temperature development close to the blade edge. The obtained results enhance the understanding of temperature generating processes during machine operation and allow conclusions about potential improvements in the design of the machine and blades.

中文翻译：

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皮革剃须过程中刀辊处的热量发展

皮革通常由最大 5 平方米的整张生皮鞣制而成，需要在整个表面保持恒定的厚度，以便加工成鞋、家具和汽车内饰等高品质消费品。厚度的精确调整是通过剃须来实现的。在工业规模上，旋转刀辊用于去除半成品皮革肉面的碎屑，从而调整指定的厚度并产生光滑的表面。在剃须过程中必须小心防止温度升高到皮革的变性温度以上，以避免任何质量损失。除此之外，温度升高始终是摩擦的迹象，显示可避免的能量消耗。为了定位剃须过程中的摩擦源，研究了滚刀上的实际温度发展。使用不同的测量方法来评估剃须机刀片辊处的温升。使用有限元方法对过程进行热模拟。测量温度、刀片辊的几何形状和工艺数据都被考虑在内，以对靠近刀片边缘的温度发展进行建模。所获得的结果增强了对机器运行期间温度产生过程的理解，并有助于得出有关机器和叶片设计的潜在改进的结论。刀辊的几何形状和工艺数据都被考虑在内，以便对刀刃附近的温度发展进行建模。所获得的结果增强了对机器运行期间温度产生过程的理解，并有助于得出有关机器和叶片设计的潜在改进的结论。刀辊的几何形状和工艺数据都被考虑在内，以便对刀刃附近的温度发展进行建模。所获得的结果增强了对机器运行期间温度产生过程的理解，并有助于得出有关机器和叶片设计的潜在改进的结论。