MY115943A - Surface decarburization of a drill bit - Google Patents
Surface decarburization of a drill bitInfo
- Publication number
- MY115943A MY115943A MYPI94003041A MYPI19943041A MY115943A MY 115943 A MY115943 A MY 115943A MY PI94003041 A MYPI94003041 A MY PI94003041A MY PI19943041 A MYPI19943041 A MY PI19943041A MY 115943 A MY115943 A MY 115943A
- Authority
- MY
- Malaysia
- Prior art keywords
- rake
- intersection
- flutes
- cutting tip
- flank
- Prior art date
Links
Landscapes
- Drilling Tools (AREA)
Abstract
A DRILL BUT HAVING A DRILL BODY (13) WITH A CUTTING TIP (14), AN AXIS OF SYMMETRY (16), AND A PLURALITY OF FLUTES (15) WHEREIN SAID FLUTES (15) HAVE A RAKE SURFACE (17) AT SAID CUTTING TIP (14). THE CUTTING TIP (14) INCLUDES A PLURALITY OF SIDE BLADES (22) BETWEEN SAID FLUTES (15) AND JOINED AT A WEB (23), A PLURALITY OF FLANK SURFACES (27) EXTENDING FROM AN OUTER DIAMETER (25) OF SAID CUTTING TIP (14) TO SAID AXIS OF SYMMETRY (16), AND A PLURALITY OF PRIMARY CUTTING EDGES (20) AT THE INTERSECTION OF SAID FLANK SURFACES (27) WITH SAID RAKE SURFACES (17). BOTH THE RAKE AND FLANK SURFACES (27) HAVE EXTENSIONS WHICH WOULD INTERSECT EACH OTHER AT AN INTERSECTION. THE PRIMARY CUTTING EDGES (20) INCLUDE AN ANGULAR SURFACE (41) FORMED ON THE FORWARD END OF SAID RAKE SURFACES (17) WHICH IS LOCATED SUCH THAT THE LENGTH OF SAID EXTENSION OF SAID RAKE SURFACE (17) MEASURED BETWEEN SAID ANGULAR SURFACE (41) AND SAID INTERSECTION IS A FIRST PREDETERMINED VALUE AND THE LENGTH OF SAID EXTENSION OF SAID FLANK SURFACE (27) MEASURED BETWEEN SAID ANGULAR SURFACE (41) AND SAID INTERSECTION IS A SECOND PREDETERMINED VALUE. THE PRIMARY CUTTING EDGES (20) ALSO HAVE A HARDENED LAYER FORMED FROM THE OUTER SURFACE (25) OF THE PRIMARY CUTTING EDGE (20). (FIGURE 3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/314,511 US5628837A (en) | 1993-11-15 | 1994-09-28 | Surface decarburization of a drill bit having a refined primary cutting edge |
US08/314,510 US5609447A (en) | 1993-11-15 | 1994-09-28 | Surface decarburization of a drill bit |
Publications (1)
Publication Number | Publication Date |
---|---|
MY115943A true MY115943A (en) | 2003-10-31 |
Family
ID=51565644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI94003041A MY115943A (en) | 1994-09-28 | 1994-11-15 | Surface decarburization of a drill bit |
Country Status (2)
Country | Link |
---|---|
MY (1) | MY115943A (en) |
TW (1) | TW300922B (en) |
-
1994
- 1994-11-15 MY MYPI94003041A patent/MY115943A/en unknown
- 1994-12-05 TW TW83111404A patent/TW300922B/zh active
Also Published As
Publication number | Publication date |
---|---|
TW300922B (en) | 1997-03-21 |
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