GB452750A - Improvements relating to twist drills - Google Patents
Improvements relating to twist drillsInfo
- Publication number
- GB452750A GB452750A GB3461735A GB3461735A GB452750A GB 452750 A GB452750 A GB 452750A GB 3461735 A GB3461735 A GB 3461735A GB 3461735 A GB3461735 A GB 3461735A GB 452750 A GB452750 A GB 452750A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grooves
- flutes
- class
- iii
- twist drills
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/08—Side or plan views of cutting edges
- B23B2251/087—Cutting edges with a wave form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/18—Configuration of the drill point
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/40—Flutes, i.e. chip conveying grooves
- B23B2251/406—Flutes, i.e. chip conveying grooves of special form not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/48—Chip breakers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
452,750. Twist drills. SHINER, A. E., 23, Easton Street, Clerkenwell, London. Dec. 13, 1935, No. 34617. [Class 83 (iii)] A twist drill with auxiliary grooves formed in the main grooves or flutes has a number of such auxiliary grooves b, of uniform size and shape and symmetrical in crosssection, formed in each of the flutes which terminate in the cutting lips c, the grooves being spaced apart with bands or parts of the normal surface of the flutes between the said grooves. The grooves in different flutes may be formed at different distances from the centre line of the drill and cross sections of V and semicircular shape may be used. Reference has been directed by the Comptroller to Specifications 8899/97, [Class 83], and 183,005, [Class 83 (iii)].
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3461735A GB452750A (en) | 1935-12-13 | 1935-12-13 | Improvements relating to twist drills |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3461735A GB452750A (en) | 1935-12-13 | 1935-12-13 | Improvements relating to twist drills |
Publications (1)
Publication Number | Publication Date |
---|---|
GB452750A true GB452750A (en) | 1936-08-28 |
Family
ID=10367880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3461735A Expired GB452750A (en) | 1935-12-13 | 1935-12-13 | Improvements relating to twist drills |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB452750A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552463A (en) * | 1948-03-10 | 1951-05-08 | Taylor Instrument Co | Coolant means for drills |
US2646701A (en) * | 1949-12-27 | 1953-07-28 | Peter A Letien | Stepped edge cutting tool |
DE1017438B (en) * | 1951-10-12 | 1957-10-10 | Firth Brown Tools Ltd | Twist drill |
US3014386A (en) * | 1957-09-03 | 1961-12-26 | United Greenfield Corp | Drill |
US3460409A (en) * | 1967-05-10 | 1969-08-12 | Allied Machine & Eng Corp | Chip breaker for spade drill |
EP0278288A1 (en) * | 1987-02-11 | 1988-08-17 | HAWERA Präzisionswerkzeuge GmbH | Drilling tool for working materials producing long chips |
GB2201910A (en) * | 1987-02-23 | 1988-09-14 | Joseph Spencer | Drilling bit |
DE3730378A1 (en) * | 1987-09-10 | 1989-03-23 | Micro Crystal Ag | CUTTING TOOL, ESPECIALLY DRILLING AND / OR MILLING |
WO2005016583A1 (en) * | 2003-08-15 | 2005-02-24 | NUBIUS GROUP Präzisionswerkzeuge GmbH | Milling tool |
CN103706846A (en) * | 2012-10-01 | 2014-04-09 | 李仕清 | Centering spiral tool with combined positioning and combined cutting functions |
CN104400079A (en) * | 2014-11-27 | 2015-03-11 | 苏州阿诺精密切削技术股份有限公司 | Twist bit for carburizing steel |
CN107363304A (en) * | 2017-08-31 | 2017-11-21 | 广州卓程电子科技有限公司 | A kind of drill point of high-efficient cutting |
US10661362B2 (en) | 2016-06-15 | 2020-05-26 | Kennametal Inc. | Fluted cutting tool configuration and method therefor |
US11141799B2 (en) * | 2017-06-13 | 2021-10-12 | Sumitomo Electric Hardmetal Corp. | Drill |
-
1935
- 1935-12-13 GB GB3461735A patent/GB452750A/en not_active Expired
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552463A (en) * | 1948-03-10 | 1951-05-08 | Taylor Instrument Co | Coolant means for drills |
US2646701A (en) * | 1949-12-27 | 1953-07-28 | Peter A Letien | Stepped edge cutting tool |
DE1017438B (en) * | 1951-10-12 | 1957-10-10 | Firth Brown Tools Ltd | Twist drill |
US3014386A (en) * | 1957-09-03 | 1961-12-26 | United Greenfield Corp | Drill |
US3460409A (en) * | 1967-05-10 | 1969-08-12 | Allied Machine & Eng Corp | Chip breaker for spade drill |
EP0278288A1 (en) * | 1987-02-11 | 1988-08-17 | HAWERA Präzisionswerkzeuge GmbH | Drilling tool for working materials producing long chips |
GB2201910A (en) * | 1987-02-23 | 1988-09-14 | Joseph Spencer | Drilling bit |
DE3730378A1 (en) * | 1987-09-10 | 1989-03-23 | Micro Crystal Ag | CUTTING TOOL, ESPECIALLY DRILLING AND / OR MILLING |
WO2005016583A1 (en) * | 2003-08-15 | 2005-02-24 | NUBIUS GROUP Präzisionswerkzeuge GmbH | Milling tool |
CN103706846A (en) * | 2012-10-01 | 2014-04-09 | 李仕清 | Centering spiral tool with combined positioning and combined cutting functions |
CN104400079A (en) * | 2014-11-27 | 2015-03-11 | 苏州阿诺精密切削技术股份有限公司 | Twist bit for carburizing steel |
US10661362B2 (en) | 2016-06-15 | 2020-05-26 | Kennametal Inc. | Fluted cutting tool configuration and method therefor |
GB2553202B (en) * | 2016-06-15 | 2022-06-29 | Hanita Metal Works Ltd | Fluted cutting tool configuration and method therefor |
US11141799B2 (en) * | 2017-06-13 | 2021-10-12 | Sumitomo Electric Hardmetal Corp. | Drill |
CN107363304A (en) * | 2017-08-31 | 2017-11-21 | 广州卓程电子科技有限公司 | A kind of drill point of high-efficient cutting |
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