WORKPIECE MEASUREMENT METHOD, WORKPIECE MEASUREMENT SYSTEM, AND PROGRAM

• Main Authors: YOSHIMOTO TATSUYA, OKAMOTO AKIRA
• Format: Patent
• Language: English; Japanese
• Published: 05.09.2023
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

To measure the shape and position of a workpiece without requiring preliminary preparation of three-dimensional CAD data, etc.SOLUTION: A workpiece measurement method for measuring the shape and position of a workpiece composed of a plurality of components includes: an acquisition step of acquiring three-dimensional point cloud data of the workpiece; an outline estimation step of estimating one or more boundary frames that each indicate an outline corresponding to each of the plurality of components, using the point cloud data and a condition defined in correspondence with the shape of the workpiece to be measured; and an optimization step of optimizing the one or plurality of boundary frames estimated in the outline estimation step by adjustment of a parameter in accordance with an evaluation function, and identifying a shape of each of the plurality of components.SELECTED DRAWING: Figure 1 【課題】３次元ＣＡＤデータなどの事前の準備を要することなく、ワークの形状や位置を測定する。【解決手段】複数の部材から構成されるワークの形状および位置の計測を行うワーク計測方法は、前記ワークの３次元の点群データを取得する取得ステップと、計測対象のワークの形状に対応して規定された条件および前記点群データを用いて、前記複数の部材に対応する概形を示す１または複数の境界枠を推定する概形推定ステップと、前記概形推定ステップにて推定された前記１または複数の境界枠を評価関数によるパラメータの調整により最適化し、前記複数の部材の形状を特定する最適化ステップと、を有する。【選択図】図１