Digitizing method
First Claim
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1. A method for measuring a distance from a surface of a model, comprising the steps of:
- providing a specified profile on a portion of the model, for use in obtaining correction data;
obtaining the correction data based on the specified profile, said correction data obtaining step including calculating a zero point correction amount and a mean value of a correction coefficient;
measuring a distance from the surface of the model to obtain measured data; and
obtaining digitized data based upon the obtained measured data and the correction data.
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Abstract
A digitizing method in which a distance from a model surface is measured and stored at regular intervals of time or distance to obtain digital profile data of the model. A specified profile for correction is provided on a part of the model, and by using the specified mode, correction data such as a distance correction coefficient is obtained before carrying out the digitizing. Digitizing data obtained by carrying out the digitizing is corrected by the correction data. The correction data is obtained based on the material and surface condition of the actual model, and therefore, the digitizing data can be accurately corrected.
33 Citations
1 Claim
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1. A method for measuring a distance from a surface of a model, comprising the steps of:
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providing a specified profile on a portion of the model, for use in obtaining correction data; obtaining the correction data based on the specified profile, said correction data obtaining step including calculating a zero point correction amount and a mean value of a correction coefficient; measuring a distance from the surface of the model to obtain measured data; and obtaining digitized data based upon the obtained measured data and the correction data.
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Specification
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Current AssigneeFanuc Limited 3580 Shibokusa Aza-Komanba Oshinomura Minamitsuru-Gun Yamanashi Japan
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Original AssigneeFanuc Ltd (Fanuc Corporation)
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InventorsNagata, Hiroo, Yamazaki, Etsuo
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Primary Examiner(s)Ip, Paul
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Application NumberUS07/362,407Time in Patent Office651 DaysField of Search318/568.1, 318/568.13, 318/568.16, 318/571, 318/573, 318/577-579, 318/640, 364/513, 364/167.01, 364/183, 364/561, 364/474.03-474.37, 364/475, 250/561, 250/237 G, 250/372, 356/375, 356/376, 356/371, 356/356, 356/386, 356/486, 356/351, 356/359, 356/360, 356/369, 356/354, 350/403, 350/407US Class Current318/578CPC Class CodesG05B 19/4207 in which a model is traced ...G05B 2219/37275 Laser, interferometerG05B 2219/37425 Distance, rangeG05B 2219/37495 Correction of measured valu...
