| Project/Area Number |
12650252
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Intelligent mechanics/Mechanical systems
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| Research Institution | Kyushu University |
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Principal Investigator |
KATSUKI Akio Kyushu University, Graduate School of Engineering, Research Associate, 大学院・工学研究院, 助手 (20038095)
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| Co-Investigator(Kenkyū-buntansha) |
AKIRA Mohri Kyushu University, Graduate School of Engineering, Professor, 大学院・工学研究院, 教授 (50037909)
SAJIMA Takao Kyushu University, Graduate School of Engineering, Research Associate, 大学院・工学研究院, 助手 (20215750)
ONIKURA Hiromichi Kyushu University, Graduate School of Engineering, Professor, 大学院・工学研究院, 教授 (90108655)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Deep hole / Machining / Robot / Laser / Guiding / Adaptive control |
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| Research Abstract |
The deep-hole drilling robot is designed and produced to bore a precise hole with a limitless depth. The robot is guided by a laser beam along a straight or curved line. It consists of a counter-boring head, front and rear actuator units, a built-in type motor between the two actuators, an active rotation stopper and a feed unit. The following results can be obtained.
1. Heat generations in the cutting zone with 20 mm diameter and on the motor are examined connected with hole accuracy. The average temperature rise of the cutting zone is examined using a model bite on a lathe. The rises of the area are 2 and 25 ℃ at the rotational speeds of 60 and 270 rpm, respectively. Cutting depth and feed are 0.5 mm and 0.5 mm/rev, respectively. Workpiece is Duralumin (JIS-type A2017-T4). The temperature rises of built-in type motor are 17 and 23 ℃ at a normal rotational speed of 60 rpm and a top speed of 80 rpm after idling of 45 minutes, respectively.
2. Instead of the feed unit with rolling of the robot controlled automatically, an active rotation stopper and feed unit are made, separately. The performances of the two units are examined. The rotational speed of the rotation stopper is 0.15 °/s. The moving speed of feed unit is 0.14 mm/s.
3. Performance of the guiding is examined using the laser-guided deep-hole boring tool which is going to be produced on a commercial basis. The method of detecting robot's position and its inclination precisely is thought out. As a result, the robot can be controlled precisely along a straight or curved line.
4. On the basis of the above performance tests, main part of the robot is reformed and can be used for performance tests with a rolling proof device. The feed unit with robot' rolling controlled automatically needs its improvements in speed and accuracy.
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