专利检索 ap:("PRAMET TOOLS, S.R.O.") AND inv:"Martin STRAKA" 第 1 页

1.

发明申请
DRILL AND DRILL INSERT WITH CHIPBREAKER PROTRUSIONS 审中-公开

公开(公告)号：US20170368613A1

公开(公告)日：2017-12-28

申请号：US15537405

申请日：2015-12-09

申请人： PRAMET TOOLS, S.R.O.

发明人： Martin STRAKA , Roman REINDL , Marios GOLTSIS , Simon HELLBORG

IPC分类号： B23B51/04 , B23B27/14 , E21B10/56

CPC分类号： B23B51/048 , B23B27/143 , B23B2200/321 , B23B2251/48 , B23B2251/50 , Y10T407/235

摘要： A drill includes drill body and peripheral insert having a radial cutting edge extending generally in a direction of a radius of the drill body, and a central insert. The peripheral insert includes a rake face including a plurality of chipbreaker protrusions. A first angle measured between a line tangent to forward ends of the plurality of chipbreaker protrusions and the central axis of the drill body extending toward the shank end is an acute angle. Also a peripheral insert is disclosed.