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 methodInfo
- 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
Links
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
- B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
- B24B3/06—Sharpening 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
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.
Applications Claiming Priority (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)
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)
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 |
DE102009039170B4 (en) * | 2009-08-27 | 2022-01-20 | Kennametal Inc. | drilling tool |
ITUD20110078A1 (en) * | 2011-06-03 | 2012-12-04 | Nordutensili S R L | "AUTOMATIC SHARPENING MACHINE FOR WOODEN CANDLE MILLS, PROGRAMMABLE WITH OPTICAL READING OF THE 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 |
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 |
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 |
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)
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 |
-
1973
- 1973-06-20 FR FR7322552A patent/FR2234749A5/fr not_active Expired
-
1974
- 1974-06-05 GB GB2495374A patent/GB1426678A/en not_active Expired
- 1974-06-06 US US476999A patent/US3916582A/en not_active Expired - Lifetime
- 1974-06-07 AU AU69870/74A patent/AU468343B2/en not_active Expired
- 1974-06-12 DE DE2428426A patent/DE2428426C3/en not_active Expired
- 1974-06-14 BR BR4907/74A patent/BR7404907D0/en unknown
- 1974-06-18 DD DD179253A patent/DD114024A5/xx unknown
- 1974-06-19 IT IT24170/74A patent/IT1015204B/en active
- 1974-06-19 ES ES427406A patent/ES427406A1/en not_active Expired
- 1974-06-20 PL PL1974172052A patent/PL90744B1/pl unknown
- 1974-06-20 JP JP6979574A patent/JPS5342159B2/ja not_active Expired
Cited By (3)
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 |
---|---|
AU468343B2 (en) | 1976-01-08 |
FR2234749A5 (en) | 1975-01-17 |
AU6987074A (en) | 1975-12-11 |
DE2428426A1 (en) | 1975-01-09 |
PL90744B1 (en) | 1977-01-31 |
DE2428426B2 (en) | 1979-08-23 |
DE2428426C3 (en) | 1980-05-08 |
JPS5037090A (en) | 1975-04-07 |
IT1015204B (en) | 1977-05-10 |
DD114024A5 (en) | 1975-07-12 |
ES427406A1 (en) | 1976-09-16 |
BR7404907D0 (en) | 1975-01-07 |
US3916582A (en) | 1975-11-04 |
JPS5342159B2 (en) | 1978-11-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |