Three-dimensional trajectory parameter measurement of industrial products is the key technical criteria that drives the product qualification.It has recently become one of the hotspots in the measurement field.This pa...Three-dimensional trajectory parameter measurement of industrial products is the key technical criteria that drives the product qualification.It has recently become one of the hotspots in the measurement field.This paper presents a method for measuring the eyeglass frame parameters using the inner trajectory as measurement object.The three-dimensional parameters can be measured and calculated from top view and front view.The preprocessing is performed to ensure the reliability of data acquisition.The necessary derivation and explanation for formulas of important parameters are provided.A standard square board is used as the template and is measured multi-times to verify the measurement method.The experimental data are processed and the type A uncertainty is calculated,which concludes that the measurement results are convincible and comply with the product standard,and the proposed method is correct and the design requirements are met.展开更多
The measurement of the spectacles frame parameters has substantial effects on both the production and ex- port of spectacles products.In fact,this measurement is the measurement of related three-dimensional trajectory...The measurement of the spectacles frame parameters has substantial effects on both the production and ex- port of spectacles products.In fact,this measurement is the measurement of related three-dimensional trajectory. The working principles of the measurement apparatus developed based on capacitive grating technology are introduced in this paper.Capacitive grating technology is a precision length measurement method.Its advantages are small vol- ume,low price,low production cost,and easy to obtain precise readings of the measured data.The measurement apparatus is composed of one industrial control computer,two microcontrollers and corresponding circuits.The sys- tem stability is guaranteed during the design of the circuit with the practical situation of its industry application taken into account.The software is divided into lower layer and upper layer.Each layer has different emphasis.The cau- ses of system errors and the method of error elimination are also analyzed.The analysis of the data obtained from ex- periments and the operating results of prototype apparatus both indicate that the proposed measurement apparatus has achieved outstanding competitive technical level of same kind products in international market and thus has ideal im- plications for mass production.展开更多
基金Supported by Guangxi Natural Science Fund(0640173)
文摘Three-dimensional trajectory parameter measurement of industrial products is the key technical criteria that drives the product qualification.It has recently become one of the hotspots in the measurement field.This paper presents a method for measuring the eyeglass frame parameters using the inner trajectory as measurement object.The three-dimensional parameters can be measured and calculated from top view and front view.The preprocessing is performed to ensure the reliability of data acquisition.The necessary derivation and explanation for formulas of important parameters are provided.A standard square board is used as the template and is measured multi-times to verify the measurement method.The experimental data are processed and the type A uncertainty is calculated,which concludes that the measurement results are convincible and comply with the product standard,and the proposed method is correct and the design requirements are met.
文摘The measurement of the spectacles frame parameters has substantial effects on both the production and ex- port of spectacles products.In fact,this measurement is the measurement of related three-dimensional trajectory. The working principles of the measurement apparatus developed based on capacitive grating technology are introduced in this paper.Capacitive grating technology is a precision length measurement method.Its advantages are small vol- ume,low price,low production cost,and easy to obtain precise readings of the measured data.The measurement apparatus is composed of one industrial control computer,two microcontrollers and corresponding circuits.The sys- tem stability is guaranteed during the design of the circuit with the practical situation of its industry application taken into account.The software is divided into lower layer and upper layer.Each layer has different emphasis.The cau- ses of system errors and the method of error elimination are also analyzed.The analysis of the data obtained from ex- periments and the operating results of prototype apparatus both indicate that the proposed measurement apparatus has achieved outstanding competitive technical level of same kind products in international market and thus has ideal im- plications for mass production.
