2022-11-26T18:45:08Zhttps://soar-ir.repo.nii.ac.jp/oaioai:soar-ir.repo.nii.ac.jp:000130022022-08-29T04:38:39Z最小歯数差ハイポサイクロイド減速機の効率On the Efficiency of Hypo-Cycloid Reduction Gears having Minimum Difference in Number of Teeth between Internal Gear and Pinion両角, 宗晴八重島, 公郎平田, 幸吉In this paper we deal with the trial manufacture of hypo-cycloid reduction gears with reduction ratio of 1:40 and 1:80 and the performance test of the manufactured reduction gears. Planet gear in hypo-cycloid reduction gears makes revolution and rotation at the same time, and for the purpose of taking out the absolute rotation number, which is synthesized by the said revolution and rotation, directly with the ratio of 1:1 to the driven shaft positioned on the axis of revolution, the several methods have been used. In such gearing, if the difference in number of teeth between an internal gear and a pinion can be made one, a considerably large reduction ratio can be obtained in one step, and using such internal gearing as having no difference in number of teeth and having the center distance which is equal to the radius of revolution of the above-mentioned planet gear, the absolute rotation number which is synthesized with the revolution and rotation of the planet gear can be taken out directly with the ratio of 1:1 to the driven shaft positioned on the axis of revolution, thus compact and durable reduction gearing having a high reduction ratio can be obtained. However, practical internal gearing having the difference of one or zero in number of teeth have not been obtained to date because of the interference which is peculiar to internal gearing. One of the authors have succeeded in obtaining internal gears with the difference of one or zero in number of teeth and with the contact ratio of 1.0 or larger which have hitherto been regarded as being impossible with involute teeth, by providing adequate profile shift to the internal gear and the pinion of ordinary involute teeth, thus avoiding the interference by the internal gear. By combining two internal gearsets having the difference of one or zero in number of teeth, the trial constructions of compact and durable hypo-cycloid reduction gears with reduction ratios of 1:40 and 1:80 are done respectively, and the performance test of the constructed reduction gears are carried out. The efficiency is measured at various input horse power and 1,800rpm throughout the experiment. In this performance test, these reduction gears showed a considerably high efficiency, and it can be seen that the experimental values agree well with the theoretical results.Article信州大学工学部紀要 31: 120-128 (1971)信州大学工学部1971-12-25jpndepartmental bulletin paperVoRhttp://hdl.handle.net/10091/10985https://soar-ir.repo.nii.ac.jp/records/130020037-3818AN00121228信州大学工学部紀要31120128https://soar-ir.repo.nii.ac.jp/record/13002/files/Engineering31-09.pdfapplication/pdf701.1 kB2015-09-28