EP0058177A1 - Vorrichtung zum bearbeiten von schneidewerkzeugen aus hartmetall oder stahl - Google Patents
Vorrichtung zum bearbeiten von schneidewerkzeugen aus hartmetall oder stahlInfo
- Publication number
- EP0058177A1 EP0058177A1 EP19810902296 EP81902296A EP0058177A1 EP 0058177 A1 EP0058177 A1 EP 0058177A1 EP 19810902296 EP19810902296 EP 19810902296 EP 81902296 A EP81902296 A EP 81902296A EP 0058177 A1 EP0058177 A1 EP 0058177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flute
- grinding wheel
- grinding
- steel
- cutting tools
- 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.)
- Withdrawn
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
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
- B24B19/04—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for fluting drill shanks
Definitions
- the present invention relates to a device for machining cutting tools made of hard metal or steel, comprising a first grinding wheel for straightening a flute in the solid and a second grinding wheel for straightening the back of the flute.
- the flute is first cut and ground with a first wheel, then a second wheel is used to correct the back of said flute. For each flute and its back, it is therefore necessary to make two passes, which causes time-outs to adjust the grindstones.
- the object of the present invention is to remedy these drawbacks and to reduce, on the one hand, the adjustment time by approximately 80% and, on the other hand, the machining time by 2/3.
- This object is achieved by the device according to the invention which is characterized in that the two grinding wheels are driven separately but act simultaneously in a single pass.
- FIG. 1 is a schematic view of the grinding wheels in the axis of the workpiece, in this case a drill bit
- FIG. 2 is a plan view of the grinding wheels and the drill bit, the grinding wheel of the back of the flute being shown parallel to the grinding wheel in the full of the flute to simplify the drawing, the arrows indicating the movements that the grinding wheels are likely to perform.
- the device shown shows the machining of the helical grooves and the adjustment of a bit.
- This device comprises a first grinding wheel 1 making it possible to straighten the flutes 2 of the drill bit 3 in full.
- This grinding wheel 1 is mounted on a carriage (not shown) capable of being moved in three planes perpendicular to each other and makes an angle determined from the pitch of the wick 3 with the horizontal axis of said wick which moves along its longitudinal axis (fig. 1 and 2).
- a second grinding wheel 4 is provided to perform the rectification of the back of the flute.
- this grinding wheel has been shown parallel to the grinding wheel 1 to simplify the drawing but, in reality, its axis is inclined by an angle ⁇ adjustable relative to the horizontal plane (fig.
- the grinding wheel 4 is movable in height and in two planes which intersect at right angles. Grinding wheels 1 and 4 are driven separately but work at the same time. Thanks to this simultaneous machining, the production time is reduced. two thirds compared to the machines which work as indicated in the preamble. Furthermore, the machining precision is increased, since the settings are deleted.
- the drive and advance of the drill bit 3 as well as the variations in the positions of the two grinding wheels 1, 4 are controlled by known copying devices and synchronized with the feed, so that the grinding wheels are brought automatically into the adequate position on the workpiece.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH633380A CH628832A5 (fr) | 1980-08-22 | 1980-08-22 | Dispositif pour usiner des outils de coupe en metal dur ou en acier. |
CH6333/80 | 1980-08-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0058177A1 true EP0058177A1 (de) | 1982-08-25 |
Family
ID=4307887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19810902296 Withdrawn EP0058177A1 (de) | 1980-08-22 | 1981-08-19 | Vorrichtung zum bearbeiten von schneidewerkzeugen aus hartmetall oder stahl |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0058177A1 (de) |
JP (1) | JPS57501228A (de) |
CH (1) | CH628832A5 (de) |
WO (1) | WO1982000610A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2654663A1 (fr) * | 1989-11-17 | 1991-05-24 | Diamoutils | Outil de coupe rotatif au diamant, et procede pour sa realisation. |
DE10027544A1 (de) * | 2000-06-02 | 2001-12-13 | Kennametal Inc | Bohrerspitze für einen Spiralbohrer und Verfahren zum Herstellen einer Spannut im Bereich einer Bohrerspitze für einen Spiralbohrer |
GB0016943D0 (en) * | 2000-07-10 | 2000-08-30 | Dormer Tools Sheffield Ltd | Drills and their manufacture |
GB0701242D0 (en) * | 2007-01-23 | 2007-02-28 | Rolls Royce Plc | Milling cutter manufacturing method |
EP3804906B1 (de) | 2019-10-10 | 2024-05-15 | Fraisa SA | Verfahren zur herstellung einer mantelseitigen schneidengeometrie in einem vollmaterialschaftwerkzeug zur materialbearbeitung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR836107A (fr) * | 1937-09-20 | 1939-01-11 | Procédé de fabrication, à partir d'une barre d'acier trempée et d'une manière continue, des forets hélicoïdaux ou analogues et machine automatique pour la mise enceuvre du procédé | |
US2477730A (en) * | 1941-07-28 | 1949-08-02 | Fouquet Eugene | Automatic machine for grinding drills |
DE1577301C3 (de) * | 1966-08-03 | 1981-04-09 | Braum, H. Normann | Maschine zum Herstellen von Spiralbohrern |
-
1980
- 1980-08-22 CH CH633380A patent/CH628832A5/fr not_active IP Right Cessation
-
1981
- 1981-08-19 JP JP50267181A patent/JPS57501228A/ja active Pending
- 1981-08-19 WO PCT/CH1981/000091 patent/WO1982000610A1/en not_active Application Discontinuation
- 1981-08-19 EP EP19810902296 patent/EP0058177A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8200610A1 * |
Also Published As
Publication number | Publication date |
---|---|
CH628832A5 (fr) | 1982-03-31 |
JPS57501228A (de) | 1982-07-15 |
WO1982000610A1 (en) | 1982-03-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0298285B1 (de) | Fräswerkzeug mit ersetzbaren Schneideeinsätzen | |
JP2008062382A (ja) | 締付ネジ用のセンタ孔を有する焼結切削植刃 | |
US10245653B2 (en) | Modular tubing notcher system | |
WO2005007330A1 (en) | Cutting head for rotary cutting tool | |
US20080229598A1 (en) | Multi-function measuring tool | |
ATE177032T1 (de) | Werkzeugzusammenbau und methode | |
EP0058177A1 (de) | Vorrichtung zum bearbeiten von schneidewerkzeugen aus hartmetall oder stahl | |
US3740808A (en) | Cutter particularly for gear hobbing | |
US6676338B2 (en) | Tool for making bores with offset cutting edges | |
US4743148A (en) | Chip breaker | |
US6102089A (en) | Assembly for converting a drill press into a wood lathe | |
CN211940450U (zh) | 一种硬质合金刀片打磨用夹具 | |
US1412915A (en) | Automatic filing machine | |
US5816898A (en) | Cutter sharpening device | |
JPS5811527Y2 (ja) | ほぞ面取り可変カツタ− | |
JP6329743B2 (ja) | 歯切用むくバイト、及び歯切用むくバイトにチップブレーカを形成する際に使用する加工治具 | |
WO1982002507A1 (en) | Tool grinding machine | |
CN214720587U (zh) | 一种传扭轴多边形面的加工装置 | |
US4218163A (en) | Rotary cutting tool with offset cutting element | |
US6206619B1 (en) | Non-adjustable single cylindrical lip boring tool | |
CN212217290U (zh) | 一种可调裁锯角度的金属带锯床 | |
JPH07251312A (ja) | ドリル | |
JP2002036016A (ja) | 段付き穴明け工具 | |
US4128360A (en) | Cutting tool bit and grinding fixture for sharpening said bit for use in an axially actuated back spot facing tool | |
SU986616A1 (ru) | Отрезной резец |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19820421 |
|
AK | Designated contracting states |
Designated state(s): DE FR NL |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19831112 |