GB452750A - Improvements relating to twist drills - Google Patents

Improvements relating to twist drills

Info

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
Application number
GB3461735A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3461735A priority Critical patent/GB452750A/en
Publication of GB452750A publication Critical patent/GB452750A/en
Expired legal-status Critical Current

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)].
GB3461735A 1935-12-13 1935-12-13 Improvements relating to twist drills Expired GB452750A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (15)

* Cited by examiner, † Cited by third party
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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