GB1426678A - Methods of grinding cutting tools operating by axial thrust and having at least one cutting edge coplanar with the axis and jig for carrying out siad method - Google Patents

Methods of grinding cutting tools operating by axial thrust and having at least one cutting edge coplanar with the axis and jig for carrying out siad method

Info

Publication number
GB1426678A
GB1426678A GB2495374A GB2495374A GB1426678A GB 1426678 A GB1426678 A GB 1426678A GB 2495374 A GB2495374 A GB 2495374A GB 2495374 A GB2495374 A GB 2495374A GB 1426678 A GB1426678 A GB 1426678A
Authority
GB
United Kingdom
Prior art keywords
tool
cutting
plane
support
grinding
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
GB2495374A
Original Assignee
Costil M
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 FR7322552A priority Critical patent/FR2234749A5/fr
Application filed by Costil M filed Critical Costil M
Publication of GB1426678A publication Critical patent/GB1426678A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/02Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
    • B24B3/06Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters of face or end milling cutters or cutter heads, e.g. of shank type

Abstract

1426678 Sharpening cutters; drills; end mills M COSTIL 5 June 1974 [20 June 1973] 24953/74 Headings B3D B3C and B3K A method of sharpening a cutting tool which operates by axial thrust and has at least one cutting lip 4 comprises mounting the tool 17 in a holder 16 of a jig, and positioning the tool relative to the flat face of a cup shaped grinding wheel in a first position for grinding a cutting rake plane 3, in a second position for grinding a cutting face plane 5, and in a third position to form a small face 6 intersecting the rake plane along a line forming an angle not in excess of 90 degrees with the cutting tip and having its apex coincident with the tool centre to limit the central portion of the cutting tip. The tool may have two flutes 1, 2, the flute 2 being formed with a cutting tip 4 defined by a cutting rake 3 and a cutting face plane 5. The plane 5 extends beyond the centre line YY<SP>1</SP> of the drill and intersects a plane 6 which intersects the cutting edge 4 at the centre C<SP>1</SP> of the tool. The other cutting edge is defined only by a cutting rake plane and a cutting face plane. A jig for use in positioning the tool for sharpening by a cup-shaped grinding wheel 9 consists of a vertical support 10 carried by a table 8 movable in the direction of the arrows f. The support mounts a horizontal shaft 11 which is rotatable about its axis X, X<SP>1</SP> to positions determined by engagement of a spring- loaded catch 22 mounted on the support with notches 21 1 , 21 2 , 21 3 in an indexing plate secured to one end of the shaft 11. The other end of the shaft has a support 12 for an offset plate 13 provided with a pivot 14 for the head 15 of a tool-holding headstock 16 for the tool 17. The head is adjustable about the pivot 14 to positions determined by a quadrant 18 and has means 19 for indexing the tool. The axes XX<SP>1</SP>, YY<SP>1</SP> and Z, Z<SP>1</SP> of the shaft 11, tool 17 and pivot 14, respectively, intersect at C. A boss 28 having a face in the vertical plane containing axis XX<SP>1</SP> in one position of support 12 is formed on the support and carries a diamond for truing the grinding wheel. In operation, the tool is inserted into the holder so that the position to be ground extends beyond the axis Z, Z<SP>1</SP>. In the first position, the catch 22 is engaged with notch 21, and the head 15 is positioned at the end of the quadrant. Movement of the support 10 engages the tool with the grinding wheel for grinding the cutting rake face 3. In the second position, the catch 22 is engaged with notch 21 2 and the axis YY<SP>1</SP> moved through an angle b of, for example 45 degrees. The axis YY<SP>1</SP> is in a vertical plane and movement of the support engages the tool with the grinding wheel for grinding the cutting face 5. In the third position, the catch is engaged with notch 21 3 and the tool engaged with the grinding wheel to grind the plane L limiting the cutting edge 4 to the centre C<SP>1</SP> of the tool. The other tips of the tool may be ground after indexing of the tool by the device 19 and grinding with the tool moved to the first and second positions only.
GB2495374A 1973-06-20 1974-06-05 Methods of grinding cutting tools operating by axial thrust and having at least one cutting edge coplanar with the axis and jig for carrying out siad method Expired GB1426678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7322552A FR2234749A5 (en) 1973-06-20 1973-06-20

Publications (1)

Publication Number Publication Date
GB1426678A true GB1426678A (en) 1976-03-03

Family

ID=9121281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2495374A Expired GB1426678A (en) 1973-06-20 1974-06-05 Methods of grinding cutting tools operating by axial thrust and having at least one cutting edge coplanar with the axis and jig for carrying out siad method

Country Status (11)

Country Link
US (1) US3916582A (en)
JP (1) JPS5342159B2 (en)
AU (1) AU468343B2 (en)
BR (1) BR7404907D0 (en)
DD (1) DD114024A5 (en)
DE (1) DE2428426C3 (en)
ES (1) ES427406A1 (en)
FR (1) FR2234749A5 (en)
GB (1) GB1426678A (en)
IT (1) IT1015204B (en)
PL (1) PL90744B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5442979A (en) * 1988-03-14 1995-08-22 Greenfield Industries, Inc. Twist drill
CN102211303A (en) * 2011-04-09 2011-10-12 张家港市普天机械制造有限公司 Double-cutter row clamping device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017271B1 (en) * 1979-03-27 1982-10-27 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Device for holding cutters of a gear cutting machine on a grinding machine
US4829861A (en) * 1987-11-10 1989-05-16 Hardinge Brothers, Inc. Headstock assembly for a chucker and bar machine
US5184926A (en) * 1990-11-05 1993-02-09 Megatool, Inc. Root-strength drill bit and method of making
JPH0631939U (en) * 1992-09-30 1994-04-26 株式会社中防鉄工所 End blade gash grinding equipment for cutting tools
AUPM534094A0 (en) * 1994-04-29 1994-05-19 Parke, Terrence James Sharpening apparatus
DE19546362C2 (en) * 1994-12-12 2002-10-24 Deckel Michael Feinmech Gmbh tool grinder
AT407353B (en) * 1998-11-30 2001-02-26 Weingartner Maschbau Gmbh Method and machining tool for producing screw-shaped profiles
DE102009039170A1 (en) 2009-08-27 2011-03-03 Kennametal Inc. drilling
ITUD20110078A1 (en) * 2011-06-03 2012-12-04 Nordutensili S R L "automatic sharpening machine for wood end mills, programmable with optical reading of geometric characteristics and computerized sharpening".
RU2493952C1 (en) * 2012-04-04 2013-09-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технологический университет "СТАНКИН" (ФГБОУ ВПО МГТУ "СТАНКИН") Method of drill grinding
CN103084935B (en) * 2012-12-19 2015-02-18 西南铝业(集团)有限责任公司 Grinding method for milling cutter degrees
CN105364642A (en) * 2015-11-24 2016-03-02 江门市江海区杰能机电科技有限公司 Tool sharpener capable of effectively reducing plastic deformation of grinding wheel
CN105364647A (en) * 2015-11-24 2016-03-02 江门市江海区杰能机电科技有限公司 Tool sharpener with stable stressing function
CN105458842B (en) * 2015-11-27 2017-10-17 贵州西南工具(集团)有限公司 A kind of method for solving the small tipping of small sword footpath alloy knife cutting edge
RU2709553C1 (en) * 2019-10-02 2019-12-18 Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") Screw drill sharpening method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328549A (en) * 1940-07-29 1943-09-07 United Shoe Machinery Corp Method of grinding twist drills and machine for same
US2866302A (en) * 1955-06-16 1958-12-30 Christen & Co A G Machine for sharpening drills
US3073076A (en) * 1960-03-21 1963-01-15 William H Field Co Inc Radius cutter grinding machine
US3094822A (en) * 1960-11-14 1963-06-25 Charles T Breitenstein Spiral grinding fixture
US3156074A (en) * 1961-08-07 1964-11-10 George M Baltz Process and apparatus for grinding a shell milling cutter
US3117399A (en) * 1961-08-08 1964-01-14 Beare Berniece Method and apparatus for tool grinding
US3448545A (en) * 1965-09-23 1969-06-10 Mini Ind Constructillor Method of and means for sharpening twist drills
FR1493661A (en) * 1966-07-19 1967-09-01 Renault Method of sharpening twist drills and machine for its implementation
FR1589568A (en) * 1968-10-18 1970-03-31
US3656264A (en) * 1970-04-24 1972-04-18 Radial Lip Machine Inc Method of grinding drills
US3680263A (en) * 1970-06-03 1972-08-01 Huffman S E Corp Method and apparatus for grinding end cutting tools

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5442979A (en) * 1988-03-14 1995-08-22 Greenfield Industries, Inc. Twist drill
CN102211303A (en) * 2011-04-09 2011-10-12 张家港市普天机械制造有限公司 Double-cutter row clamping device
CN102211303B (en) * 2011-04-09 2012-10-03 张家港市普天机械制造有限公司 Double-cutter row clamping device

Also Published As

Publication number Publication date
DD114024A5 (en) 1975-07-12
DE2428426C3 (en) 1980-05-08
IT1015204B (en) 1977-05-10
BR7404907D0 (en) 1975-01-07
DE2428426B2 (en) 1979-08-23
AU6987074A (en) 1975-12-11
JPS5342159B2 (en) 1978-11-09
US3916582A (en) 1975-11-04
PL90744B1 (en) 1977-01-31
ES427406A1 (en) 1976-09-16
FR2234749A5 (en) 1975-01-17
AU468343B2 (en) 1976-01-08
DE2428426A1 (en) 1975-01-09
JPS5037090A (en) 1975-04-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee