Engineering Research Equipment Grant: Specification of Dimensional Inspection Techniques for Cylindrical Features

这笔拨款的目的是购买几何轮廓系统（圆度测试仪），该系统将专门用于支持工程研究。这一计量设备将用于一个研究项目，旨在确定尺寸检测技术和指导方针，以测量圆柱形特征与坐标测量机（CMM）。三坐标测量机有潜力提供关于制造零件几何形状的丰富信息。然而，对于计量学家来说，这项技术带来了许多与测量方法、质量和解释有关的问题。本研究项目的目标是制定一套指导方针，旨在帮助三坐标测量机操作员选择适当的测量策略来验证圆柱特征公差。在本项目中，圆度测试仪将用于生成常见圆柱特征加工工艺的形状误差特征极坐标图。然后对数据进行处理以提取这些误差的主要谐波项，以便建立形状误差的随机误差模型。然后，随机模型将用于为模拟模块生成数据，以帮助推断各种检查策略的性能。

The objective of this grant is to purchase a Geometry Profiling System (Roundness Tester) which will be dedicated to support research in engineering. This piece of metrology equipment will be used in a research project seeking to specify dimensional inspection techniques and guidelines for the measurement of cylindrical features with Coordinate Measuring Machines (CMM's). CMM's have the potential to provide a wealth of information on manufactured part geometry. However, for the metrologist, this technology brings a host of problems related to the methodology, quality and interpretation of measurements. The goal of this research project is to develop a set of guidelines designed to assist CMM operators in selecting appropriate measurement strategies for the verification of cylindrical feature tolerances. Within this project, the Roundness Tester will be used to generate polar chart of form errors characteristics of common cylindrical feature machining processes. The data will then be processed to extract dominant harmonic terms of these errors in order to build stochastic error models for form errors. The stochastic models will then be used to generate data for a simulation module designed to help make inferences on the performance of various inspection strategies.