GB183005A - Improvements in drills - Google Patents

Improvements in drills

Info

Publication number
GB183005A
GB183005A GB14141/21A GB1414121A GB183005A GB 183005 A GB183005 A GB 183005A GB 14141/21 A GB14141/21 A GB 14141/21A GB 1414121 A GB1414121 A GB 1414121A GB 183005 A GB183005 A GB 183005A
Authority
GB
United Kingdom
Prior art keywords
grooves
drill
edges
cutting
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
GB14141/21A
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 GB14141/21A priority Critical patent/GB183005A/en
Priority to FR536208D priority patent/FR536208A/en
Publication of GB183005A publication Critical patent/GB183005A/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
    • B23B2251/18—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

183,005. Woods, N. E. May 20, 1921. Drills.-Twist drills have one or more grooves 10, 11, at different distances from the drill axis, continued into the cutting-edges 8 and dividing the latter into separate cutting-edges. The grooves may be semicircular in section before twisting the drill, or semi-elliptical and deepest near the edge of the drill. The grooves may be forged, cast, or milled. The trailing edges of the cutting portions 2, 3, are rounded off, to give an additional passage for lubricant and increased chip space, and to facilitate tempering during manufacture. The grooves more distant from the drill axis are the deepest.
GB14141/21A 1921-05-20 1921-05-20 Improvements in drills Expired GB183005A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB14141/21A GB183005A (en) 1921-05-20 1921-05-20 Improvements in drills
FR536208D FR536208A (en) 1921-05-20 1921-05-23 Twist drill

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB14141/21A GB183005A (en) 1921-05-20 1921-05-20 Improvements in drills
FR536208T 1921-05-23

Publications (1)

Publication Number Publication Date
GB183005A true GB183005A (en) 1922-07-20

Family

ID=10035742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14141/21A Expired GB183005A (en) 1921-05-20 1921-05-20 Improvements in drills

Country Status (2)

Country Link
FR (1) FR536208A (en)
GB (1) GB183005A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1138871A1 (en) * 2000-03-27 2001-10-04 HILTI Aktiengesellschaft Twist drill
US7137461B2 (en) 2002-10-03 2006-11-21 Black & Decker, Inc. Masonry drilling tool
US10661362B2 (en) 2016-06-15 2020-05-26 Kennametal Inc. Fluted cutting tool configuration and method therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE524021A (en) * 1951-10-12

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1138871A1 (en) * 2000-03-27 2001-10-04 HILTI Aktiengesellschaft Twist drill
US6571890B2 (en) 2000-03-27 2003-06-03 Hilti Aktiengesellschaft Twist drill
US7137461B2 (en) 2002-10-03 2006-11-21 Black & Decker, Inc. Masonry drilling tool
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
DE102017112417B4 (en) 2016-06-15 2023-08-31 Hanita Metal Works Ltd. CUTTING TOOL

Also Published As

Publication number Publication date
FR536208A (en) 1922-04-28

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