Multi-Sensor 3-D Coordinate Measuring System

触觉探测三维坐标测量系统(CMS)使几何测量任务的通用性和灵活性以及获得的测量值的相对精确度和可追溯性(包括任务特定测量不确定度的自动评估)得到了迄今为止无与伦比的组合。为了实现特定任务测量不确定度的自动评定，采用了虚拟坐标测量机(VCMM)软件。在它的第一个版本中，VCMM仅限于使用单点探测进行的测量。因此，为了达到可接受的测量时间，测量点的数量受到了限制。然而，特别是对于具有显著形状偏差的物体的测量，必须使用大量的测量点来实现形状、位置和尺寸偏差的正确分离。如果需要测量对象的整体数字化，也必须有大量的测量点，例如，测量自由曲面时经常出现这种情况。有两种方法旨在增加可能的测量点数量：一方面，现已上市的第二版VCMM(VCMM(V2))也允许评估以扫描模式进行的测量的特定任务测量不确定度。在这种模式下，与单点探测相比，在一定时间内获取的测量点的数量大大增加。另一方面，现代CMS通常是一种多传感器测量系统，也允许集成光学传感器。由于探头的非接触性，光学传感器的应用大大减少了测量时间，或者更确切地说，增加了在一定时间段内获得的测量点的数量。然而，尽管在实践中迫切需要对光学传感器测量点的特定任务不确定度进行评估，但仍是一个需要进一步研究的课题。这种现代化的多传感器CMS，包括软件选项VCMM(V2)，是本提案的主题，将作为尺寸计量领域内进一步研究活动的基础进行采购。将采购的CMS将主要用于必要的校准和参考测量的研究，包括扫描测量点提取。它为揭示被评价的测量方法、程序和策略的系统测量误差提供了高精度的参考。此外，它还用于确定要调查的测量对象和系统的形状。此外，还计划集成研发项目中创建的传感器系统和演示器，如触觉探测测量头和光学共焦距传感器，以调查它们的性能。

A tactile probing 3-D-coordinate measuring system (CMS) allows for an till these days unequalled combination of universality and flexibility regarding the geometrical measuring tasks as well as the relative accuracy and traceability of the obtained measuring values, including an automatic evaluation of the task-specific measurement uncertainty. For the automatic evaluation of the task-specific measurement uncertainty, the software option “Virtual Coordinate Measuring Machine” (VCMM) is applied. In its first version, VCMM was limited to measurements conducted with single point probing. Therefore, the number of measuring points has been limited in order to attain an acceptable measuring time. However, especially for the measurement of objects with significant form deviations, a high number of measuring points is mandatory to enable the correct separation of form, position and dimensional deviations. A high number of measuring points is also mandatory if a holistic digitalization of the measuring object is needed, as is frequently the case when measuring free form surfaces, for instance. There have been two approaches aiming to increase the possible number of measuring points: On the one hand, the second version of VCMM (VCMM (v2)), which is now available commercially, also allows for the evaluation of the task-specific measurement uncertainties of measurements conducted in scanning-mode. In this mode, the number of measuring points taken within a certain period is greatly enhanced compared to single point probing. On the other hand, generally a modern CMS is a multi-sensor measuring system that also allows for the integration of optical sensors. Due to the non-contact nature of probing, the application of optical sensors significantly reduces the measurement time or rather enhances the number of measuring points taken within a certain period. Nevertheless, the evaluation of task-specific uncertainties of measurement points taken with optical sensors is still a topic that needs further research, although it is urgently needed in practice. Such a modern multi-sensor CMS, including the software option VCMM (v2) is the subject matter of this proposal and shall be procured as a basis for further research activities within the field of dimensional metrology.The CMS to be procured will be used in research primarily for the necessary calibrations and reference measurements, including scanning measurement point extraction. It offers a highly accurate reference to reveal systematic measurement errors of evaluated measurement methods, procedures and strategies. Furthermore, it serves to determine the shape of measuring objects and systems to be investigated. In addition, the integration of sensor systems and demonstrators created in the research and development projects, such as a tactile probing measuring head as well as an optical confocal distance sensor, is planned to investigate their performance.