UNEVENNESS DETECTION DEVICE OF PERIPHERAL PART, AND UNEVENNESS DETECTION METHOD OF PERIPHERAL PART

• Main Authors: WAKABA HIROYUKI, TAKIZAWA AKIHIKO, PAN LEI, IWAMA SEIJI
• Format: Patent
• Language: English; Japanese
• Published: 09.04.2015
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To automatically determine whether the unevenness of a peripheral part of a detection object has an allowable shape.SOLUTION: The unevenness detection device of a peripheral part of the present invention includes: an imaging unit 10 for imaging the peripheral part P of the detection object; a measurement unit 20 for measuring the distance between a reference line and the peripheral part P; a storage unit 30 for storing the distance between the reference line and the peripheral part P at a predetermined length; and a determination unit 40 that calculates the difference between the maximum value and minimum value of the distance between the reference line and the peripheral part P at the predetermined length, and determines the presence/absence of an abnormality by comparing the difference with a threshold. 【課題】検知対象の周縁部の凹凸が許容される形状となっているか否かを自動で判断すること。【解決手段】本発明による周縁部の凹凸検知装置は、検知対象の周縁部Ｐを撮像する撮像部１０と、基準線と周縁部Ｐとの間の距離を測定する測定部２０と、所定の長さにおいて、基準線と周縁部Ｐとの間の距離を記憶する記憶部３０と、所定の長さにおける基準線と周縁部Ｐとの間の距離の最大値と最小値との間の差分を算出し、当該差分と閾値とを比較することで異常の有無を判断する判断部４０と、を備えている。【選択図】図２