Abstract
The aim of the work was to design a special system for measurements of elements with repetitive geometry or assemblies with repeating components, set in a linear patterns. The main focus was based on developing a computer program for signal analysis from variable number of miniature displacement sensors. It was set that the response for displacement of measuring tip from each sensor was a 0-5 V voltage signal with possibility of using different type of sensors. Requirements were determined based on projected measurement method. A special design of sensor was made for testing the computer program. If the characteristics of the sensor is known, it is possible to compute the type A evaluation of uncertainty. The results are presented in XY chart on computer screen. The program allows the user to choose any number of the sensors and determine the distance between them. Also, the possibility of calibration of sensors’ set was provided. The test were conducted on a prototype handle for sensors, made on a 3D printer.
Highlights
Geometric dimensioning is a crucial stage of a production process and obtaining shape and position deviation is no less important than taking the measurements of dimensions
An accurate measurement system is needed in the case of precision machines, or when engineering tolerance is low
A single one-off method of production in small companies poses an obstacle as maintaining low unit cost of production is fundamental and their access to costly measurement equipment is limited
Summary
Geometric dimensioning is a crucial stage of a production process and obtaining shape and position deviation is no less important than taking the measurements of dimensions. Measurement of shape and position deviation requires some advanced equipment. This, in turn, needs a test method and auxiliary elements, e.g. custom made sensors. A single one-off method of production in small companies poses an obstacle as maintaining low unit cost of production is fundamental and their access to costly measurement equipment is limited. General purpose sensors might solve the problem. It could be done either by mounting them to a dedicated handle or, taking an entirely different approach, by designing a low- cost custom-made measurement equipment. Potential applications include measuring the heights of repetitive elements e.g. such as guitar neck
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