公开(公告)号：US3859699A

公开(公告)日：1975-01-14

申请号：US41598773

申请日：1973-11-15

Applicant: SANDVIK AB

Inventor： LINDSKOG BO GOSTA

IPC: B23Q11/00 ,  B23B29/00 ,  B23B29/02 ,  B23B29/03 ,  B23B29/034 ,  B26D1/00

CPC classification number: B23B29/022 ,  B23B29/03 ,  Y10T407/13 ,  Y10T407/22 ,  Y10T407/2286 ,  Y10T407/28 ,  Y10T408/76

Abstract: In an elongated boring and turning tool that includes an elongated bar and a cutting head, the bar comprises a steel support member and an outer tubular shaft of hard metal, which shaft is composed of a plurality of rings whose inner surfaces make a tight fit on said support member. The inner diameter of the rings is 70-90 percent of their outer diameter.

Abstract translation: 在包括细长条和切割头的细长钻孔和车削工具中，杆包括钢支撑构件和硬金属的外管状轴，该轴由多个环组成，其内表面紧密配合 说支持成员。 环的内径为其外径的70-90％。