FIELD: turning; drilling.
SUBSTANCE: cutting portion (11) is rotatable in direction of rotation (21) about axis of rotation (22) and has annular portion (13), at least one cutting element (14) fastened to a first end of annular portion (13), and insertion element (15) which, at the end facing away from cutting elements (14), is connected to annular portion (13), on the transition to which annular support arm (49) is formed. Insertion element (15) has at least one slit-shaped clearance (26) with cross-slit (33) and connecting slit (34), wherein cross-slit (33) is arranged perpendicularly in relation to axis of rotation (22) and is connected by way of connecting slit (34) to upper edge (35) of insertion element (15).
EFFECT: higher reliability of connection of the crown to the core of a drill and facilitating its removal from the base.
18 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| BORING CROWN WITH REPLACEABLE CUTTING UNIT | 2013 |
|
RU2630396C9 |
| BORING CROWN WITH REPLACEABLE CUTTING UNIT | 2013 |
|
RU2631566C2 |
| DRILLING CROWN WITH REPLACEABLE CUTTING SECTION | 2012 |
|
RU2609886C2 |
| DRILL BIT WITH EXCHANGEABLE CUTTING PORTION | 2012 |
|
RU2607058C2 |
| MANUFACTURING METHOD OF DRILL, NAMELY OF ROCK BORE BIT | 2009 |
|
RU2532209C2 |
| METHOD OF MANUFACTURING A SOLID RING DRILL FOR A CORE DRILL BIT | 2015 |
|
RU2667114C1 |
| SINGLE-PRESS DRILLING UNIT WITH ONE-PRESS BIT INTERLOCKING | 2019 |
|
RU2766215C1 |
| CARTRIDGE FOR CONNECTION OF DIAMOND DRILLING DEVICE WITH DRILLING BIT | 2015 |
|
RU2694863C2 |
| STEM HOLDER | 2007 |
|
RU2407613C1 |
| BOER | 2013 |
|
RU2639746C2 |
