BR9915074A - Rotary drill - Google Patents
Rotary drillInfo
- Publication number
- BR9915074A BR9915074A BR9915074-3A BR9915074A BR9915074A BR 9915074 A BR9915074 A BR 9915074A BR 9915074 A BR9915074 A BR 9915074A BR 9915074 A BR9915074 A BR 9915074A
- Authority
- BR
- Brazil
- Prior art keywords
- drill
- fixing cable
- rotary drill
- cutting
- chips
- Prior art date
Links
Landscapes
- Drilling Tools (AREA)
Abstract
"BROCA ROTATIVA". Uma broca, geralmente cilíndrica, particularmente uma broca de pastilha, tendo diversas pastilhas de corte (16, 18), caneluras para aparas, em forma de espiral (24), para remover as aparas do furo, e um cabo de fixação (22), oposto à aresta cortante (12) da broca, em que a broca é submetida a uma força transversal resultante desbalanceada (40) na ponta de corte (12) da broca, e que a resultante (40) fica orientada perpendicularmente a um plano axial que contém o eixo neutro (36) da tensão de flexão máxima adjacente à sua junção com o cabo de fixação (22)."ROTARY DRILL". A drill, usually cylindrical, particularly a insert drill, having several cutting inserts (16, 18), spiral-shaped chip grooves (24) to remove the chips from the hole, and a fixing cable (22) , opposite the cutting edge (12) of the drill, in which the drill is subjected to a resultant unbalanced transverse force (40) at the cutting tip (12) of the drill, and the resulting (40) is oriented perpendicular to an axial plane which contains the neutral axis (36) of the maximum flexural tension adjacent to its junction with the fixing cable (22).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9915074-3A BR9915074A (en) | 1999-09-07 | 1999-09-07 | Rotary drill |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1999/020669 WO2001017719A1 (en) | 1998-05-19 | 1999-09-07 | Stiff drill |
BR9915074-3A BR9915074A (en) | 1999-09-07 | 1999-09-07 | Rotary drill |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9915074A true BR9915074A (en) | 2001-07-17 |
Family
ID=25665410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9915074-3A BR9915074A (en) | 1999-09-07 | 1999-09-07 | Rotary drill |
Country Status (1)
Country | Link |
---|---|
BR (1) | BR9915074A (en) |
-
1999
- 1999-09-07 BR BR9915074-3A patent/BR9915074A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA10 | Dismissal: dismissal - article 33 of industrial property law | ||
B11Y | Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired |