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GB155004A - An improved spirally fluted drill - Google Patents

An improved spirally fluted drill

Info

Publication number
GB155004A
GB155004A GB2197519A GB2197519A GB155004A GB 155004 A GB155004 A GB 155004A GB 2197519 A GB2197519 A GB 2197519A GB 2197519 A GB2197519 A GB 2197519A GB 155004 A GB155004 A GB 155004A
Authority
GB
United Kingdom
Prior art keywords
holes
fluted drill
steps
spirally fluted
drill
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
GB2197519A
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 GB2197519A priority Critical patent/GB155004A/en
Publication of GB155004A publication Critical patent/GB155004A/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
    • B23B51/08—Drills combined with tool parts or tools for performing additional working
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/009—Stepped drills
    • 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

Landscapes

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

Abstract

155,004. Robertson, T. Sept. 6, 1919. Drills.-A twist drill for drilling holes of different diameters, recessing and countersinking, has steps 1, 2, 3, 4 of different diameter with clearance grooves c and, if desired, inclined faces d between the steps. The step 3 is shown with a central clearance groove c<2> in addition. If pilot holes are first drilled by means of jigplates, these may be removed and the holes finished by unskilled labour with a stepped drill of the required size. Reamers.-The last step may be only slightly larger than that preceding it, so as to act like a reamer.
GB2197519A 1919-09-06 1919-09-06 An improved spirally fluted drill Expired GB155004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2197519A GB155004A (en) 1919-09-06 1919-09-06 An improved spirally fluted drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2197519A GB155004A (en) 1919-09-06 1919-09-06 An improved spirally fluted drill

Publications (1)

Publication Number Publication Date
GB155004A true GB155004A (en) 1920-12-06

Family

ID=10171875

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2197519A Expired GB155004A (en) 1919-09-06 1919-09-06 An improved spirally fluted drill

Country Status (1)

Country Link
GB (1) GB155004A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041324B (en) * 1954-12-21 1958-10-16 Rohde & Doerrenberg Step drill or countersink
EP0330112A1 (en) * 1988-02-24 1989-08-30 H. WILLY KRAUSS GMBH &amp; CO. METALLWAREN- UND WERKZEUGFABRIK Drilling or reaming tool
US5427477A (en) * 1993-05-14 1995-06-27 Geberit Technik Ag Tool for calibrating and deburring pipe ends
US7771372B2 (en) 2003-01-03 2010-08-10 Ekos Corporation Ultrasonic catheter with axial energy field
DE19526686B4 (en) * 1994-09-09 2010-11-04 Dürr Präzisionswerkzeuge GmbH Multistage bit
EP2205385A4 (en) * 2007-09-26 2011-05-18 Bosch Gmbh Robert Drill bit and reamer
DE102010012963A1 (en) * 2010-03-25 2011-09-29 Rolf Klenk Gmbh & Co Kg drilling
CN102371380A (en) * 2011-09-26 2012-03-14 江苏万工科技集团有限公司 Porous multifunctional cutter
CN102649175A (en) * 2011-02-24 2012-08-29 钴碳化钨硬质合金公司 Segmented orbital drill
JP2013022721A (en) * 2011-07-26 2013-02-04 Honda Motor Co Ltd Cutting tool
CN106424856A (en) * 2016-12-23 2017-02-22 广东鼎泰精密刀具技术有限公司 Combined tool
US20180147641A1 (en) * 2015-05-28 2018-05-31 Kyocera Corporation Drill and method of manufacturing machined product
EP3434401A1 (en) * 2017-07-27 2019-01-30 Greenlee Textron Inc. Step bit
US10328500B2 (en) 2017-08-03 2019-06-25 Greenlee Tools, Inc. Cutting and deburring tool
US20220362863A1 (en) * 2021-06-11 2022-11-17 Danyang Kaiyiyuan Tools Co., Ltd. Spiral step twist drill bit
EP4074445A3 (en) * 2018-04-26 2023-03-01 Milwaukee Electric Tool Corporation Step drill bit
EP4527528A1 (en) * 2023-09-22 2025-03-26 Shajeng Hardware Co., Ltd. Step drill
EP4599963A1 (en) * 2024-02-09 2025-08-13 Techtronic Cordless GP Drill bit

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1041324B (en) * 1954-12-21 1958-10-16 Rohde & Doerrenberg Step drill or countersink
EP0330112A1 (en) * 1988-02-24 1989-08-30 H. WILLY KRAUSS GMBH &amp; CO. METALLWAREN- UND WERKZEUGFABRIK Drilling or reaming tool
US5427477A (en) * 1993-05-14 1995-06-27 Geberit Technik Ag Tool for calibrating and deburring pipe ends
DE19526686B4 (en) * 1994-09-09 2010-11-04 Dürr Präzisionswerkzeuge GmbH Multistage bit
US7771372B2 (en) 2003-01-03 2010-08-10 Ekos Corporation Ultrasonic catheter with axial energy field
EP2205385A4 (en) * 2007-09-26 2011-05-18 Bosch Gmbh Robert Drill bit and reamer
DE102010012963A1 (en) * 2010-03-25 2011-09-29 Rolf Klenk Gmbh & Co Kg drilling
DE102010012963A8 (en) * 2010-03-25 2012-02-16 Klenk Gmbh & Co. Kg drilling
US9446454B2 (en) 2011-02-24 2016-09-20 Kennametal Inc. Segmented orbital drill
CN102649175B (en) * 2011-02-24 2016-05-11 钴碳化钨硬质合金公司 The segmented drill bit that goes in ring
CN102649175A (en) * 2011-02-24 2012-08-29 钴碳化钨硬质合金公司 Segmented orbital drill
JP2013022721A (en) * 2011-07-26 2013-02-04 Honda Motor Co Ltd Cutting tool
CN102371380A (en) * 2011-09-26 2012-03-14 江苏万工科技集团有限公司 Porous multifunctional cutter
US10315257B2 (en) * 2015-05-28 2019-06-11 Kyocera Corporation Drill and method of manufacturing machined product
US20180147641A1 (en) * 2015-05-28 2018-05-31 Kyocera Corporation Drill and method of manufacturing machined product
CN106424856A (en) * 2016-12-23 2017-02-22 广东鼎泰精密刀具技术有限公司 Combined tool
US10245656B2 (en) 2017-07-27 2019-04-02 Greenlee Tools, Inc. Step bit
EP3434401A1 (en) * 2017-07-27 2019-01-30 Greenlee Textron Inc. Step bit
US10328500B2 (en) 2017-08-03 2019-06-25 Greenlee Tools, Inc. Cutting and deburring tool
EP4074445A3 (en) * 2018-04-26 2023-03-01 Milwaukee Electric Tool Corporation Step drill bit
US11691203B2 (en) 2018-04-26 2023-07-04 Milwaukee Electric Tool Corporation Step drill bit
US20220362863A1 (en) * 2021-06-11 2022-11-17 Danyang Kaiyiyuan Tools Co., Ltd. Spiral step twist drill bit
US11839921B2 (en) * 2021-06-11 2023-12-12 Danyang Kaiyiyuan Tools Co., Ltd. Spiral step twist drill bit
EP4527528A1 (en) * 2023-09-22 2025-03-26 Shajeng Hardware Co., Ltd. Step drill
EP4599963A1 (en) * 2024-02-09 2025-08-13 Techtronic Cordless GP Drill bit

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