公开(公告)号：US20220212269A1

公开(公告)日：2022-07-07

申请号：US17518196

申请日：2021-11-03

申请人： TUNGALOY CORPORATION

发明人： Syunsuke MIYAZAWA

IPC分类号： B23B27/16

摘要： The present disclosure improves the machining conditions and enhances the quality of machined surfaces, particularly in cutting off and grooving machining when the projection amount of a plate-like member is large. A blade, which is a plate-like member having a polygonal shape and used for cutting machining, includes: a plurality of insert pockets; and recess portions formed by partial cutting corresponding to insert pockets respectively. A holder includes: a holder main portion; and a support portion with which a part of the recess portion formed in the blade contacts. The holder is configured in which the blade can be installed in a state where the part of the recess portion can contact with the support portion.

公开(公告)号：US20180272433A1

公开(公告)日：2018-09-27

申请号：US15890663

申请日：2018-02-07

申请人： TUNGALOY CORPORATION

发明人： Yasutake SASAKI ,  Syunsuke MIYAZAWA ,  Yuichiro FUKUSHIMA

IPC分类号： B23B27/14 ,  B23B27/20 ,  C04B35/5831 ,  C04B35/63

CPC分类号： B23B27/148 ,  B23B27/145 ,  B23B27/20 ,  B23B2200/0428 ,  B23B2200/0433 ,  B23B2200/0452 ,  B23B2200/3618 ,  B23B2222/28 ,  B23B2224/04 ,  B23B2224/08 ,  B23B2224/12 ,  B23B2224/24 ,  B23B2224/28 ,  B23B2224/32 ,  B23B2224/36 ,  B23B2226/125 ,  C04B35/5831 ,  C04B35/6303 ,  C04B2235/3217 ,  C04B2235/3244 ,  C04B2235/3813 ,  C04B2235/3821 ,  C04B2235/3843 ,  C04B2235/3847 ,  C04B2235/3856 ,  C04B2235/3873 ,  C04B2235/3886 ,  C04B2235/762

摘要： A cutting edge tip of a cubic boron nitride sintered body has improved joint strength to a substrate of a cemented carbide. A cutting edge tip of a cubic boron nitride sintered body has improved crater wear resistance. A tool 10 of the present invention includes a substrate 12 of a cemented carbide and a cutting edge tip 14 of a cubic boron nitride sintered body joined to the substrate 12. The cutting edge tip 14 has a thickness covering an upper surface 12a to a lower surface 12b of the substrate 12. The cubic boron nitride sintered body contains 50 volume % or more and 95 volume % or less of cubic boron nitride and 5 volume % or more and 50 volume % or less of a binder phase. The cubic boron nitride has an average grain size of 1.0 μm or more and 6.0 μm or less.