FIELD: processing of materials by cutting; drilling.
SUBSTANCE: drill insert (20) has a central portion (22) with a central axis (AC) and three circumferentially spaced apical portions (24a, 24b, 24c), each of which includes a first axis (A1) and two diverging first cutting edges (30a, 30b) with the radially outermost cutting points (NC1, NC2) defining the first circle lying on a vertex plane perpendicular to the first axis and having the first cutting diameter. In a view along one of the first axes, the second circle having the second diameter describes the drill insert, the first cutting diameter being at least sixty percent of the second diameter. The cutting tool is rotatable and contains a drilling plate (20) and the second cutting plate having the second cutting edge. One of the cutting edges is working, and its first axis is coaxial to the tool axis.
EFFECT: group of inventions ensures reliable retention of the cutting plate in the rotating tool.
23 cl, 12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2709917C2 |
| CLAMPING DEVICE OF HAND-HELD MACHINE AND HAND-HELD MACHINE | 2011 |
|
RU2588909C2 |
| CUTTING INSERT CHIP DISCHARGE MEANS | 2013 |
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RU2617463C2 |
| INSERT AND CUTTING TOOL | 2010 |
|
RU2501632C2 |
| CUTTING PLATE AND WORKPIECE PROCESSING TOOL | 2018 |
|
RU2737689C1 |
| CUTTING INSERT AND TOOL WITH SUCH CUTTING INSERT | 2020 |
|
RU2782883C1 |
| ROTARY CUTTING TOOL WITH DISC-SHAPED CUTTING CASE AND INDEXED CUTTING INSERT FOR IT | 2018 |
|
RU2776248C2 |
| FURNACE PLANT | 1996 |
|
RU2157492C2 |
| CUTTING TOOL | 1994 |
|
RU2128562C1 |
| CUTTING INSERT, CUTTING BODY AND CLAMPING MECHANISM OF CUTTING TOOL ASSEMBLY FOR CHIP REMOVAL | 2012 |
|
RU2599060C2 |
