When automatically generating programs for flatbed laser cutting machines, it is advantageous to know the position of the supporting tips of the raw material. This allows the nesting layout and tool path to be adapted in an intelligent way. The problem of measuring the supporting tips of a laser cutting machine has not been considered in published literature before. We introduce possible methods first and choose a laser triangulation system. A novel setup, where none of the components is at a right angle to the measured surface, is proposed to account for the circumstances in a laser cutting machine. Its performance is investigated thoroughly with special regard to robustness and accuracy. In order to achieve very high accuracies, the setup is extrinsically calibrated on the measured object and different line extraction algorithms are tested for their effect on the measurement result. It is shown that the measurement setup is robust for different changes in the environment, such as different slat materials, bent supporting tips, and slagging. The measurement accuracy of the setup is calculated to be within ± 0.8 mm.

当自动生成用于平板激光切割机的程序时，知道原材料支撑尖端的位置是有利的。这样可以以智能的方式调整嵌套布局和刀具路径。以前在公开的文献中没有考虑过测量激光切割机的支撑尖端的问题。我们首先介绍可能的方法，然后选择激光三角测量系统。提出了一种新颖的设置，其中没有一个组件与被测表面成直角，以解决激光切割机中的情况。对其性能进行了彻底的研究，特别是考虑了鲁棒性和准确性。为了达到很高的精度，该设置在被测物体上进行了外部校准，并测试了不同的线提取算法对测量结果的影响。结果表明，对于不同的环境变化（例如，不同的板条材料，弯曲的支撑尖端和排渣），测量设置是可靠的。设置的测量精度计算为在±0.8 mm之内。