Development of a contact-type probe for measurements of ultra-fine-pitch gears and application to pseudo roughness evaluation |
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| Authors: | Myongsoo Kim Daisuke Iba Tomohiro Tatsumi Junichi Hongu Ichiro Moriwaki |
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| Affiliation: | 1.Overseas Sales Department,Osaka Seimitsu Kikai Co., Ltd,Osaka,Japan;2.Department of Mechanical Engineering,Kyoto Institute of Technology,Kyoto,Japan;3.Department of Mechanical Engineering,Tottori University,Tottori,Japan |
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| Abstract: | Gears used in actuators for robot articulations are showing a trend toward having smaller modules. Thus, profile measurements of small module gears are strongly desired. Our aim was to develop a probe artifact that enables ultra-fine-pitch cylindrical gears to be measured, by minimizing the size of the probe head. The configurations of the contact-type probe and holder were designed under consideration of interference with an adjacent tooth during profile measurements of an objective tooth. After manufacturing the artifact, a 0.1-module spur gear was measured as a trial, and reasonable results were obtained. In addition, a calibration plate for roughness was measured using the developed probe artifact. The evaluated roughness showed a strong correlation with the “true roughness”. Therefore, the developed probe can be expected to enable “pseudo” roughness to be evaluated. |
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