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US2972839A - Method and a device for grinding twist drills - Google Patents

Method and a device for grinding twist drills Download PDF

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Publication number
US2972839A
US2972839A US720229A US72022958A US2972839A US 2972839 A US2972839 A US 2972839A US 720229 A US720229 A US 720229A US 72022958 A US72022958 A US 72022958A US 2972839 A US2972839 A US 2972839A
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US
United States
Prior art keywords
twist drills
feb
sheet
sheets
grinding twist
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 - Lifetime
Application number
US720229A
Inventor
Erdelyi Ferenc
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
Application granted granted Critical
Publication of US2972839A publication Critical patent/US2972839A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

F. ERDELYI 2,972,839
Feb. 28, 1961 METHOD AND A DEVICE FOR GRINDING TWIST DRILLS 23 Sheets-Sheet 1 Filed March 10, 1958 INVENTOR fEEEA/a TRUE-4Y1 Feb. 28, 1961 F. ERDELYI 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 25 Sheets-Sheet 2 0 I 1 g 0 r f r I w g ig x, 148
sa 0 I 28 Q 35 INVEN TOR Feb. 28, 1961 F. ERDELYI 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 25 Shets-Sheet s Fig. 20
IN VENTOP E a/MM METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 F. ERDELYI Feb. 28, 1961 23 Sheets-Sheet 4 I luvewro 7 Feb. 28, 1961 F. ERDELYI 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 23 Sheets-Sheet 5 Fig.4
//v vEuroR fER EA/c FmJEL i a/m M f Feb. 28, 1961 F. ERDELYI- 2,972,839
I METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 I 25 Sheets-Sheet 6 Q QmM w Feb. 28 1961 ERDELYI 2,972,839
' 2 METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 23 Sheets-Sheet 7 IN VE/VTOR Feb. 28, 1961 F. ERDELYI 2 I METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Fild March 10, 1958 23 Sheets-Sheet 8 v v a nvvslvrok T E/75m: f? 051,1
Feb. 28, 1961 F. ERDELYI 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 23 Sheets-Sheet 9 LA 7 51mm: 47 T Feb. 28, 1961 F. ERDELYI 2,972,839
' METHOD ANDYA DEVICE FOR GRINDING TWIST DRILLS Filed March-l0, 1958 23 Sheets-Sheet 10 mi law INVENTOP TEKEM: 1 m: 51- I B CEQM Feb. 28, 1961 F. ERDELY] 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 23 Sheets-Sheet 11 Fly- 14 INVENTOR i=1 l5 r /YE/va, FR oE'LY I Tia Feb. 28, 1961 F. ERDELYI 2,
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 H 23 Sheets-Sheet 12 na e Ya 1? 0 ELyI Feb. 28, 1961 METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 F. ERDELYI 2:5 Sheets-Sheet. 1s
lNVENT'OR L/J F e/wave teas L Feb. 28, 1961 F. E RDELYI 2,972,839
I METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March ,10, 1958 v 2s Sheets-Sheet 14 METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 F. ERDELYI Feb. 28, 1961 25 Sheets-Sheet 15 METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 F. ERDELYI Feb. 28, 1961 23 Sheets-Sheet 16 m INVENTOR E k: rim/Eye Fm: E! yI I 3% METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 F. ERDELYI Feb. 28, 1961 23 Sheets-Sheet 17 INVENTOP u wononhoul o METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 F. ERDELYI Feb. 28, 1961 23 Sheets-Sheet 18 RTHHU v a N3 ME lNl/EN TOR FE/rave E/vp EL Feb. 28, 1961 F. EIRDELYI 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 23 Sheets-Sheet 19 nut/F02 I] K/) I g flame/w: LROELyI Feb. 28, 1961 F. ERDELYI 2,972,839
METHOD AND A DEVICE FOR GRINDING TWIST DRILLS Filed March 10, 1958 v 2s Sheets-Sheet 2o INVENTOR
US720229A 1957-10-02 1958-03-10 Method and a device for grinding twist drills Expired - Lifetime US2972839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2972839X 1957-10-02

Publications (1)

Publication Number Publication Date
US2972839A true US2972839A (en) 1961-02-28

Family

ID=8050677

Family Applications (1)

Application Number Title Priority Date Filing Date
US720229A Expired - Lifetime US2972839A (en) 1957-10-02 1958-03-10 Method and a device for grinding twist drills

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US (1) US2972839A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084485A (en) * 1961-03-06 1963-04-09 Oliver Instr Company Drill grinder
US3132453A (en) * 1963-03-13 1964-05-12 Eldorado Tool & Mfg Corp Gun drill grinding attachment
US3266194A (en) * 1963-08-05 1966-08-16 Winslow Product Engineering Co Machine for grinding conical drill points
US3521405A (en) * 1968-02-14 1970-07-21 Radial Lip Machine Corp Drill grinding apparatus
US3535831A (en) * 1966-07-19 1970-10-27 Renault Method of sharpening twist drills
US3656264A (en) * 1970-04-24 1972-04-18 Radial Lip Machine Inc Method of grinding drills
WO1982000791A1 (en) * 1980-09-02 1982-03-18 Meili M Feeding device for an automatic drill sharpening machine
US6419561B1 (en) 2000-10-05 2002-07-16 Kennametal Inc. Method and apparatus for making a cutting tool having a plurality of margins
US6431962B1 (en) 2000-10-05 2002-08-13 Kennametal Inc. Method and apparatus for making a cutting tool having a flute
US6602029B1 (en) 2000-10-05 2003-08-05 Kennametal Inc. Cutting tool and method and apparatus for making the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US822391A (en) * 1903-08-11 1906-06-05 Friedrich Schmaltz Apparatus for grinding drills, borers, and like tools.
US2471443A (en) * 1945-10-10 1949-05-31 Munro Gordon Drill grinder
US2598055A (en) * 1946-02-23 1952-05-27 Hogfors Hans Fredrik Birger Drill grinding machine
US2796703A (en) * 1951-12-28 1957-06-25 Union Twist Drill Company Method and apparatus for sharpening drills

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US822391A (en) * 1903-08-11 1906-06-05 Friedrich Schmaltz Apparatus for grinding drills, borers, and like tools.
US2471443A (en) * 1945-10-10 1949-05-31 Munro Gordon Drill grinder
US2598055A (en) * 1946-02-23 1952-05-27 Hogfors Hans Fredrik Birger Drill grinding machine
US2796703A (en) * 1951-12-28 1957-06-25 Union Twist Drill Company Method and apparatus for sharpening drills

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3084485A (en) * 1961-03-06 1963-04-09 Oliver Instr Company Drill grinder
US3132453A (en) * 1963-03-13 1964-05-12 Eldorado Tool & Mfg Corp Gun drill grinding attachment
US3266194A (en) * 1963-08-05 1966-08-16 Winslow Product Engineering Co Machine for grinding conical drill points
US3535831A (en) * 1966-07-19 1970-10-27 Renault Method of sharpening twist drills
US3626436A (en) * 1966-07-19 1971-12-07 Renault Machine for sharpening twist drills
US3521405A (en) * 1968-02-14 1970-07-21 Radial Lip Machine Corp Drill grinding apparatus
US3656264A (en) * 1970-04-24 1972-04-18 Radial Lip Machine Inc Method of grinding drills
WO1982000791A1 (en) * 1980-09-02 1982-03-18 Meili M Feeding device for an automatic drill sharpening machine
US6419561B1 (en) 2000-10-05 2002-07-16 Kennametal Inc. Method and apparatus for making a cutting tool having a plurality of margins
US6431962B1 (en) 2000-10-05 2002-08-13 Kennametal Inc. Method and apparatus for making a cutting tool having a flute
US6602029B1 (en) 2000-10-05 2003-08-05 Kennametal Inc. Cutting tool and method and apparatus for making the same

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