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首页> 外文会议>Conference on Recent Developments in Traceable Dimensional Measurements Jun 20-21, 2001, Munich, Germany >The Accuracy and Versatility of the NIST M48 Coordinate Measuring Machine
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The Accuracy and Versatility of the NIST M48 Coordinate Measuring Machine

机译：NIST M48坐标测量机的精度和多功能性

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The National Institute of Standards and Technology (NIST) is continuing to develop the ability to perform accurate, traceable measurements on a wide range of artifacts using a very precise, error-mapped coordinate measuring machine (CMM). The NIST M48 CMM has promised accuracy and versatility for many years. Recently, these promises have been realized in a reliable, reproducible way for many types of lD, 2D, and 3D engineering metrology artifacts. The versatility of the machine has permitted state-of-the-art, accurate measurements of one meter step gages and precision ball plates as well as 500 micrometer holes and small precision parts made of aluminum or glass. To accomplish this wide range of measurements the CMM has required extensive assessment of machine positioning and straightness errors, probe response, machine motion control and speed, environmental stability, and measurement procedures. The CMM has been used as an absolute instrument and as a very complicated comparator. The data collection techniques have been designed to acquire statistical information on the machine and probe performance and to evaluate and remove any potential thermal drift in the machine coordinate system during operation. This paper will present the data collection and measurement techniques used by NIST to achieve excellent measurement results for gage blocks, long end standards, step gages, ring and plug gages, small holes, ball plates, and angular artifacts. Comparison data with existing independent primary measuring instruments will also be presented to show agreement and correlation with those historical methods. Current plans for incorporating the CMM into existing measurement services, such as plain ring gages, large plug gages, and long end standards, will be presented along with other proposed development of this CMM.
机译：美国国家标准技术研究院（NIST）正在继续发展使用非常精确的，具有误差映射功能的坐标测量机（CMM）对各种工件进行准确，可追溯的测量的能力。 NIST M48三坐标测量机已承诺了多年的准确性和多功能性。最近，对于许多类型的1D，2D和3D工程计量伪像，这些承诺已经以可靠，可复制的方式实现。机器的多功能性允许对一米的步距规和精密的球盘以及500微米的孔和铝或玻璃制成的小型精密零件进行最先进，准确的测量。为了完成如此广泛的测量，CMM需要对机器定位和直线度误差，测头响应，机器运动控制和速度，环境稳定性以及测量程序进行广泛的评估。 CMM已被用作绝对工具和非常复杂的比较器。数据收集技术旨在获取有关机器和探头性能的统计信息，并评估和消除运行期间机器坐标系中的任何潜在热漂移。本文将介绍NIST所使用的数据收集和测量技术，以实现对量块，长端标准件，阶梯量规，环规和塞规，小孔，球板和成角工件的出色测量结果。还将提供与现有独立主要测量仪器的比较数据，以显示与这些历史方法的一致性和相关性。将介绍将CMM合并到现有测量服务中的当前计划，例如普通环规，大塞规和长端标准，以及该CMM的其他拟议开发。

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