Development of Sensing Probe for Deep Hole Measurements

2014 Fiscal Year Final Research Report

• Project/Area Number: 23560303
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Daido University
• Principal Investigator: NISHIBORI Kenji 大同大学, 工学部, 名誉教授 (50115614)
• Co-Investigator(Renkei-kenkyūsha): NISHIBORI Kento 名古屋大学大学院, 情報科学研究科, 研究員 (50397452)
• Research Collaborator: MAESAKO Daiki
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 光応用計測 / センサ / 距離計測 / プローブ / レーザ光 / 散乱光 / 小径深穴

Outline of Final Research Achievements

We developed a non-contact and simple method for measuring the inclination angle and the diameter of slender deep hole in castings such as cylinder block for automotive products. To measure the distance to the measurement surface, three laser beams are radiated perpendicularly from the sensing probe. Then the scattered lights are led to a prism and an image conduit in the probe and finally focused on an external image sensor. As the result of experiment, we confirmed to be able to measure the distance with high degree of accuracy even if the measurement surface is inclined. Consequently, the diameter of deep hole can be measured even if the sensor probe is eccentrically located.

Free Research Field

知能機械工学