Αποτελέσματα Αναζήτησης
Measurement system analysis (MSA), also known as a gage R&R (GRR) study, is a critical tool in understanding the capabilities of any system used to measure a part or a specimen. In the process of measuring with manually operated equipment, common sources of variation observed are: the specimen or part, the measurement device, and the operator.
Gauge blocks, sometimes called slip gauges, are pieces of wear-resistant material of rectangular cross-section used as references for performing length measurements. Each gauge block has a pair of parallel faces separated by a desired distance, known to a high degree of accuracy.
Proper gauges should be designed and used for rapid and effective inspection. Also automation and automatic control, which are the modem trends for future developments, are based on measurement.
metrology. The chapter throws light on surface plates and V-blocks, over which the measurand is inspected. It discusses the scaled, vernier, and micrometer instruments in detail. The chapter ends with a detailed explanation of slip gauges. Chapter 5 elaborates on angular measurements. The fact that not all measurands can be
5 Μαΐ 2019 · This article discusses every aspect of Gage block calibration, including definitions, characteristics of Gage blocks, calibration by interferon and mechanical comparison, and statistical...
The purposes of Gage R&R analysis are to (1) determine how much of the total observed variability comes from the gauge, instrument, or mea-surement system; (2) identify and isolate the variability causes in the measurement sys-tem; and (3) evaluate if the measure system is capable, adequate, accurate, and appropriate (Montgomery 2013).
Gages, in contrast, are indirect-reading instruments. The measurement units live not on a scale, but off-site (in a calibration lab somewhere), and a master or other standard object acts as their substitute. The workpiece is directly compared against the master, and only indirectly against the measurement units. The
