BR9915074A - Rotary drill - Google Patents

Rotary drill

Info

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
Application number
BR9915074-3A
Other languages
Portuguese (pt)
Inventor
Brian D Hoefler
Sumanth Kumar
Original Assignee
Ingersoll Cutting Tool
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ingersoll Cutting Tool filed Critical Ingersoll Cutting Tool
Priority to BR9915074-3A priority Critical patent/BR9915074A/en
Priority claimed from PCT/US1999/020669 external-priority patent/WO2001017719A1/en
Publication of BR9915074A publication Critical patent/BR9915074A/en

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).

BR9915074-3A 1999-09-07 1999-09-07 Rotary drill BR9915074A (en)

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)

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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