SU651902A1 - Кольцевое сверло - Google Patents

Кольцевое сверло

Info

Publication number
SU651902A1
SU651902A1 SU772516869A SU2516869A SU651902A1 SU 651902 A1 SU651902 A1 SU 651902A1 SU 772516869 A SU772516869 A SU 772516869A SU 2516869 A SU2516869 A SU 2516869A SU 651902 A1 SU651902 A1 SU 651902A1
Authority
SU
USSR - Soviet Union
Prior art keywords
drilling bit
annular drilling
annular
bit
drill
Prior art date
Application number
SU772516869A
Other languages
English (en)
Inventor
Леонид Михайлович Натапов
Михаил Дмитриевич Медведев
Original Assignee
Natapov Leonid M
Medvedev Mikhail D
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 Natapov Leonid M, Medvedev Mikhail D filed Critical Natapov Leonid M
Priority to SU772516869A priority Critical patent/SU651902A1/ru
Application granted granted Critical
Publication of SU651902A1 publication Critical patent/SU651902A1/ru

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/04—Drills for trepanning
    • B23B51/0413—Drills for trepanning with core-cutting-off devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Description

(54) КОЛЬЦЕВОЕ СВЕРЛО
,::..Л45,,,..у
3
ПосЛе определенного числа циклов вращени  сверла, соответствующего критическому числу циклов нагружени , стержень у, основани  обламываетс . Продолжительность отделени  стержн  зависит от его размеров, материала заготовки и частоты вращени  сверла.

Claims (1)

1. Авторское свидетельство СССР №.97289, кл. В 23 В 51/04, 1948.
SU772516869A 1977-08-15 1977-08-15 Кольцевое сверло SU651902A1 (ru)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772516869A SU651902A1 (ru) 1977-08-15 1977-08-15 Кольцевое сверло

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772516869A SU651902A1 (ru) 1977-08-15 1977-08-15 Кольцевое сверло

Publications (1)

Publication Number Publication Date
SU651902A1 true SU651902A1 (ru) 1979-03-28

Family

ID=20721835

Family Applications (1)

Application Number Title Priority Date Filing Date
SU772516869A SU651902A1 (ru) 1977-08-15 1977-08-15 Кольцевое сверло

Country Status (1)

Country Link
SU (1) SU651902A1 (ru)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940237A1 (en) * 1998-03-06 1999-09-08 Quintilio Lupi Modular system of circular saw blades for forming curved surfaces in marble, stone and the like
WO2000071295A1 (en) * 1999-05-21 2000-11-30 Quintilio Lupi Rotary tool with combined abrasive and fragmentation action for producing profiles or cuts on sheets of fragile material such as marble, granite, stone, glass and the like

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940237A1 (en) * 1998-03-06 1999-09-08 Quintilio Lupi Modular system of circular saw blades for forming curved surfaces in marble, stone and the like
WO1999044798A1 (en) * 1998-03-06 1999-09-10 Quintilio Lupi Modular system of circular saw blades for forming curved surfaces in marble, stone and the like
US6142139A (en) * 1998-03-06 2000-11-07 Lupi; Quintilio System of modular elements for machining marble, stone and the like
US6371103B1 (en) 1998-03-06 2002-04-16 Quintilio Lupi System of modular elements for machining marble, stone and the like
WO2000071295A1 (en) * 1999-05-21 2000-11-30 Quintilio Lupi Rotary tool with combined abrasive and fragmentation action for producing profiles or cuts on sheets of fragile material such as marble, granite, stone, glass and the like
US6793564B1 (en) 1999-05-21 2004-09-21 Quintilio Lupi Rotary tool with combined abrasive and fragmentation action for producing profiles or cuts on sheets of fragile material such as marble, granite, stone, glass and the like

Similar Documents

Publication Publication Date Title
NO167282C (no) Analogifremgangsmaate for fremstilling av nye 8-substituerte 2-aminotetraliner.
ZA763148B (en) A ring drilling rig
ZA763545B (en) Rotary percussion drill
SU651902A1 (ru) Кольцевое сверло
RO77767A (ro) Procedeu pentru prepararea unor oxadetiacefalosporine
SE7712014L (sv) Forfarande for epoxidering av alkener
AR223454A1 (es) Nuevos derivados de cis-4a-fenil-2,3,4,4a,5,6,7,7a-octahidro-1h-2-pirindina;procedimiento para obtenerlos y procedimiento para obtener cis-4a-fenil-octahidro-1h-2-pirindina-1-substituida a partir de dichos derivados
FI65618B (fi) Foerfarande foer framstaellning av terapeutiskt anvaendbara 5-ubstituerade 10,11-dihydro-5h-dibenso(a d)cyklohepten-5,1 0-miner
SU653043A1 (ru) Сверло дл кольцевого сверлени
SU850222A1 (ru) Циклон фещенко
JPS5223322A (en) Percussion instrument
JPS5266530A (en) Preparation of novel schiff base compounds
AU522224B2 (en) Percussion drill piston
SU581276A1 (ru) Способ разрушени монолитных образований
SU635231A1 (ru) Коронка дл ударного бурени
SU588454A1 (ru) Трубчата вращающа с печь
SU588335A1 (ru) Бурова коронка
JPS51131757A (en) Rolling brush
JPS51115842A (en) Mirror capable of optionally varying curvature
SU579133A2 (ru) Устройство дл креплени рабочего инструмента
SU622586A1 (ru) Устройство дл растачивани
SU581226A1 (ru) Основание блока буровой установки
SU727839A1 (ru) Устройство дл двухступенчатого цементировани
SU677693A1 (ru) Рабочий орган машины дл внесени безводного аммиака на лугах
SU676392A1 (ru) Сверлильный патрон