GB471709A - Improvements in and relating to twist drills - Google Patents

Improvements in and relating to twist drills

Info

Publication number
GB471709A
GB471709A GB3217736A GB3217736A GB471709A GB 471709 A GB471709 A GB 471709A GB 3217736 A GB3217736 A GB 3217736A GB 3217736 A GB3217736 A GB 3217736A GB 471709 A GB471709 A GB 471709A
Authority
GB
United Kingdom
Prior art keywords
grooves
flute
relating
twist drills
sides
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
GB3217736A
Other languages
English (en)
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
Priority to BE424785D priority Critical patent/BE424785A/xx
Application filed by Individual filed Critical Individual
Priority to GB3217736A priority patent/GB471709A/en
Publication of GB471709A publication Critical patent/GB471709A/en
Priority to FR829126D priority patent/FR829126A/fr
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)
GB3217736A 1936-11-24 1936-11-24 Improvements in and relating to twist drills Expired GB471709A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE424785D BE424785A (enrdf_load_stackoverflow) 1936-11-24
GB3217736A GB471709A (en) 1936-11-24 1936-11-24 Improvements in and relating to twist drills
FR829126D FR829126A (fr) 1936-11-24 1937-11-16 Foret hélicoïdal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3217736A GB471709A (en) 1936-11-24 1936-11-24 Improvements in and relating to twist drills

Publications (1)

Publication Number Publication Date
GB471709A true GB471709A (en) 1937-09-09

Family

ID=10334487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3217736A Expired GB471709A (en) 1936-11-24 1936-11-24 Improvements in and relating to twist drills

Country Status (3)

Country Link
BE (1) BE424785A (enrdf_load_stackoverflow)
FR (1) FR829126A (enrdf_load_stackoverflow)
GB (1) GB471709A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201910A (en) * 1987-02-23 1988-09-14 Joseph Spencer Drilling bit
DE3730378A1 (de) * 1987-09-10 1989-03-23 Micro Crystal Ag Schneidwerkzeug, insbesondere bohrer und/oder fraeser
CN101856737A (zh) * 2009-04-07 2010-10-13 山特维克知识产权股份有限公司 实心阶梯钻

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201910A (en) * 1987-02-23 1988-09-14 Joseph Spencer Drilling bit
DE3730378A1 (de) * 1987-09-10 1989-03-23 Micro Crystal Ag Schneidwerkzeug, insbesondere bohrer und/oder fraeser
CN101856737A (zh) * 2009-04-07 2010-10-13 山特维克知识产权股份有限公司 实心阶梯钻

Also Published As

Publication number Publication date
FR829126A (fr) 1938-06-13
BE424785A (enrdf_load_stackoverflow)

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