{"_buckets": {"deposit": "e88eaaa3-7587-4b2a-aa58-88b174a76606"}, "_deposit": {"id": "3847", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "3847"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00003847"}, "item_5_alternative_title_1": {"attribute_name": "\u305d\u306e\u4ed6\u306e\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_alternative_title": "Study on Machining Accuracy of Thin Wall Workpiece by End Mill (Analysis of Deflection of Workpiece and Tool due to Cutting Force and Machining Accuracy)"}]}, "item_5_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1997-01", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "605", "bibliographicPageEnd": "246", "bibliographicPageStart": "239", "bibliographicVolumeNumber": "63", "bibliographic_titles": [{"bibliographic_title": "\u65e5\u672c\u6a5f\u68b0\u5b66\u4f1a\u8ad6\u6587\u96c6. C\u7de8"}, {"bibliographic_title": "\u65e5\u672c\u6a5f\u68b0\u5b66\u4f1a\u8ad6\u6587\u96c6. C\u7de8", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "It is very difficult to machine the side surface of a thin wall workpiece with precision using an end mill because the deflection of the thin wall workpiece due to the cutting force is larger than that of a thick wall workpiece. There are a number of unclarified points regarding to the machining accuracy of a thin wall workpiece, and an error avoidance method has not been established. Therefore, in this study we analyze deflection of the workpiece and tool using FEM and present basic data on how to realize precision end milling of a thin wall workpiece. The main results are as follows. (1) The loads acting at the nodal points of the FEM model workpiece and tool are calculated based on the cutting mechanism of a helical end mill. (2) The deflections of the workpiece and tool at the surface generating point on the cutting edge are calculated using the FEM under forces obtained in (1). The machining error of the side surface is obtained from the relative displacement of the workpiece and tool. (3) Calculated values of machining error almost coincide with the experimental values; thus, the appropriateness of the meshed elements, assumptions of cutting force distribution and the calculation method for the nodal load are verified. (4) The displacement ratios of the workpiece and tool to the calculated values of machining error are shown. Under experimental conditions, the former ratio exceeds 0.5 in the region of the thin wall workpiece with height exceeding 15 mm.", "subitem_description_type": "Abstract"}]}, "item_5_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "45761", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Iwabe, Hiroyasu"}]}, {"nameIdentifiers": [{"nameIdentifier": "45762", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Shimada, Tomoharu"}]}, {"nameIdentifiers": [{"nameIdentifier": "45763", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Yokoyama, Kazuhiro"}]}]}, "item_5_publisher_7": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u65e5\u672c\u6a5f\u68b0\u5b66\u4f1a"}]}, "item_5_select_19": {"attribute_name": "\u8457\u8005\u7248\u30d5\u30e9\u30b0", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_5_source_id_11": {"attribute_name": 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