EP1263557A1 - Bohrer, insbesondere forstnerbohrer oder kunstbohrer - Google Patents
Bohrer, insbesondere forstnerbohrer oder kunstbohrerInfo
- Publication number
- EP1263557A1 EP1263557A1 EP01911226A EP01911226A EP1263557A1 EP 1263557 A1 EP1263557 A1 EP 1263557A1 EP 01911226 A EP01911226 A EP 01911226A EP 01911226 A EP01911226 A EP 01911226A EP 1263557 A1 EP1263557 A1 EP 1263557A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill
- cutter
- head
- bit
- spur
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G15/00—Boring or turning tools; Augers
Definitions
- Drills especially Forstner drills or artificial drills
- the invention relates to a drill, in particular Forstner drill or artificial drill, with a drill shank and a cutting head which has a central mandrel from which a first and a second end cutting edge extend radially outward in the opposite direction of attack, with the circumferential ends of the first and the second end cutting edge is adjoined in each case by a hollow cylinder segment-like wall which delimits the circumference of the cutting head and has a peripheral cutting edge which, at its end remote from the front cutting edge, delimits a chip space which opens to the other end cutting edge and penetrates the drilling head.
- Drill bits of this type are mass-produced products that are intended for use in hand, column, dowel or row drilling machines and are produced and sold in large quantities. It can be used to drill holes with a relatively large diameter in a wide variety of materials, from plastic-coated chipboard, glued wood panels to acrylic panels and other base materials.
- the disadvantage of previously known drills lies in the relatively high drilling forces or torques that have to be applied by the drilling machines, since the end cutting edges and the peripheral cutting edges with their straight edges have to overcome a high material resistance.
- peripheral edges of such known drills tend to overheat due to the high load during the drilling process, which is evident from a blue tarnish. This can result in permanent damage to the drill.
- circumferential cutting edges with a tooth-like design have been used. However, these cause the drill to be guided improperly and the borehole is torn out.
- the object of the invention is to provide a drill of the type mentioned, with the help of which the efficiency of the energy used for a bore to be drilled can be increased or with which bores can be carried out using low drilling forces, the material load on the drill being kept relatively low becomes.
- the two peripheral cutting edges have, at least partially along their course, undulating depressions and elevations.
- the constant friction occurring in known circumferential cutting edges within the drilling material is reduced to a more or less punctiform friction, thereby avoiding permanent rubbing. In this way, a lower torque of the drilling machine is required to drill a hole, which is why the drill penetrates much easier, for example, into the wood.
- the wave-shaped depressions and elevations are formed by serrated edges.
- the invention further relates to a method for producing a drill, in particular a Forstner drill or an artificial drill.
- the object of the invention is to enable automated machining of the peripheral cutting edges of a drill in a technically simple and precise manner.
- the drill shaft is ground and then the elevations and depressions are hard-milled with a hard milling cutter, in particular with the formation of a serrated edge. In this way, a very precise design of the peripheral cutting edges can be achieved.
- Fig.l is an end view of an embodiment of the drill according to the invention.
- FIG. 2 shows a side view of the drill according to Fig.l
- FIG. 3 shows a view rotated by 90 ° with respect to the illustration in FIG
- Figure 4 shows a detail of the view shown in Figure 3.
- Fig.l and Fig.2 show a Forstner bit, which is composed essentially of a drill shaft 2, which is used for clamping in a drill chuck, and a cutting head 4.
- the cutting head 4 has a protruding central dome 1, from which a first and a second end cutting edge 100, 100 'extend radially outward in the opposite direction of attack.
- the central mandrel is pointed in a pyramid-like manner, as a result of which the drill can be placed precisely on a marking for a borehole.
- the mandrel 1 penetrates so far into the material to be drilled that the drill is prevented from slipping when the drilling machine is started up.
- a hollow cylinder segment-like wall 10 which delimits the circumference of the cutting head 4, adjoins a peripheral cutting edge 8, one at the end of which is removed from the end cutting edge Front cutting edge opening, the chip head penetrating chip space 7 limited.
- a surface 12 that slopes down toward the adjacent wall 10 runs from the end cutting edges 100, 100 ′.
- the two circumferential cutting edges 8 have undulating depressions 13 and elevations 14 along their course. These can also run only along partial areas of the peripheral cutting edges 8.
- the wave-shaped depressions 13 and elevations 14 are preferably formed by serrated edges.
- the invention can be applied to a Forstner bit, an artificial bit or a similar wood bit.
- the drill according to the invention is manufactured in the following sections.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Drilling And Boring (AREA)
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT3572000 | 2000-03-03 | ||
AT3572000A AT409600B (de) | 2000-03-03 | 2000-03-03 | Bohrer |
US25529100P | 2000-12-13 | 2000-12-13 | |
US255291P | 2000-12-13 | ||
PCT/AT2001/000053 WO2001064407A1 (de) | 2000-03-03 | 2001-02-27 | Bohrer, insbesondere forstnerbohrer oder kunstbohrer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1263557A1 true EP1263557A1 (de) | 2002-12-11 |
EP1263557B1 EP1263557B1 (de) | 2004-05-06 |
Family
ID=25608302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01911226A Expired - Lifetime EP1263557B1 (de) | 2000-03-03 | 2001-02-27 | Bohrer, insbesondere forstnerbohrer oder kunstbohrer |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1263557B1 (de) |
JP (1) | JP5110755B2 (de) |
AT (1) | ATE265917T1 (de) |
AU (1) | AU4031201A (de) |
CA (1) | CA2401134C (de) |
DE (1) | DE50102205D1 (de) |
ES (1) | ES2221888T3 (de) |
PT (1) | PT1263557E (de) |
WO (1) | WO2001064407A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7648316B2 (en) | 2006-01-26 | 2010-01-19 | Wolfcraft, Gmbh | Forstner drill bit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7390756B1 (ja) | 2022-11-17 | 2023-12-04 | 株式会社オーゾネ | 木製バット加工装置及び木製バットの加工方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60154107A (ja) * | 1984-01-24 | 1985-08-13 | Canon Inc | 測距装置 |
CH670985A5 (en) * | 1986-12-10 | 1989-07-31 | Alphons Rogger | Shank cutter for timber - has bore with axially movable, lockable pin |
JPH09141616A (ja) * | 1995-11-24 | 1997-06-03 | Kanefusa Kk | 木工用ボーリング錐 |
KR100485987B1 (ko) * | 1996-02-29 | 2005-08-03 | 코메트 그룹 홀딩 게엠베하 | 기계공구용드릴공구및상기드릴공구를제작하는방법 |
JPH10151604A (ja) * | 1996-11-25 | 1998-06-09 | Kanefusa Corp | 木工用ボーリング錐 |
JP3816616B2 (ja) * | 1997-01-23 | 2006-08-30 | コスモ工機株式会社 | 管体用ホールソー |
DE19702423B4 (de) * | 1997-01-24 | 2009-11-12 | FAMAG-Werkzeugfabrik Friedr. Aug. Mühlhoff GmbH & Co. | Zylinderkopfbohrer |
DE29911945U1 (de) * | 1999-07-08 | 1999-10-21 | Weber Gustav Schlagring | Holzbohrer mit zylindrischem Schneidkopf |
-
2001
- 2001-02-27 JP JP2001563290A patent/JP5110755B2/ja not_active Expired - Lifetime
- 2001-02-27 AU AU40312/01A patent/AU4031201A/en not_active Abandoned
- 2001-02-27 AT AT01911226T patent/ATE265917T1/de active
- 2001-02-27 EP EP01911226A patent/EP1263557B1/de not_active Expired - Lifetime
- 2001-02-27 CA CA002401134A patent/CA2401134C/en not_active Expired - Lifetime
- 2001-02-27 WO PCT/AT2001/000053 patent/WO2001064407A1/de active IP Right Grant
- 2001-02-27 PT PT01911226T patent/PT1263557E/pt unknown
- 2001-02-27 ES ES01911226T patent/ES2221888T3/es not_active Expired - Lifetime
- 2001-02-27 DE DE50102205T patent/DE50102205D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0164407A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7648316B2 (en) | 2006-01-26 | 2010-01-19 | Wolfcraft, Gmbh | Forstner drill bit |
Also Published As
Publication number | Publication date |
---|---|
CA2401134C (en) | 2008-08-26 |
AU4031201A (en) | 2001-09-12 |
WO2001064407A1 (de) | 2001-09-07 |
EP1263557B1 (de) | 2004-05-06 |
PT1263557E (pt) | 2004-09-30 |
JP5110755B2 (ja) | 2012-12-26 |
CA2401134A1 (en) | 2001-09-07 |
ES2221888T3 (es) | 2005-01-16 |
JP2004502565A (ja) | 2004-01-29 |
DE50102205D1 (de) | 2004-06-09 |
ATE265917T1 (de) | 2004-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0433876B1 (de) | Werkzeug zum Schlagbohren und Werkzeugaufnahme für schlagbohrende Werkzeuge | |
WO2003011508A2 (de) | Gewindeformer oder -bohrer | |
DE1801710A1 (de) | Bohrwerkzeug | |
EP0820530A1 (de) | Schraubendreher, schraubendrehereinsatz oder dergleichen | |
EP0937860B1 (de) | Bohr- und/oder Meisselwerkzeug | |
AT4227U1 (de) | Bohrer | |
EP0147830A2 (de) | Bohrer für Handbohrmaschinen | |
DE2535066C2 (de) | Hinterschnitt-Bohrwerkzeug | |
EP2048383A2 (de) | Selbstbohrschraube | |
EP3648928B1 (de) | Setzwerkzeug, set für ein setzwerkzeugsystem und setzwerkzeugsystem | |
EP0551795A1 (de) | Werkzeug zum Schlagbohren und Meisseln und Werkzeugaufnahme für diese Werkzeuge | |
EP0375606A1 (de) | Befestigungselement | |
EP1263557B1 (de) | Bohrer, insbesondere forstnerbohrer oder kunstbohrer | |
EP0742082A1 (de) | Einrichtung zur Drehmomentübertragung bei Handwerkzeuggeräten | |
DE10359854A1 (de) | Zylinderkopfbohrer mit Hartmetallschneiden und Kunststoffschaft | |
DE3438080A1 (de) | Verfahren zum befestigen von antriebselementen auf einer welle mittels axial in diese einschneidender keile, sowie diese selbst | |
WO1988009708A1 (en) | Screw tool and screws usable therewith | |
DE102016105945A1 (de) | Verfahren zur Herstellung eines Spitzbohrers für das Schreinerhandwerk | |
AT409600B (de) | Bohrer | |
DE102018125672A1 (de) | Schraube und Antriebselement | |
DE19548199A1 (de) | Verfahren zur Herstellung einer Gewindebohrung sowie Werkzeug zur Durchführung eines solchen Verfahrens | |
EP0491153B1 (de) | Halter für einen Bohrer | |
EP0569985B1 (de) | Rotationswerkzeug mit Hartmetalleinsätzen | |
DE10256060B4 (de) | Verfahren zur Herstellung eines Bohrgewindefräsers und danach hergestellter Bohrgewindefräser | |
AT522202B1 (de) | Bohrwerkzeug |
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: 20021004 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040506 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040506 Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040506 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 50102205 Country of ref document: DE Date of ref document: 20040609 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: GERMAN |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040806 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040806 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040806 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: BOVARD AG PATENTANWAELTE |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20040805 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20040722 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20040506 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2221888 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050227 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050227 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050228 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050228 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050228 Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050228 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20050208 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20051128 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20080221 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080222 Year of fee payment: 8 Ref country code: IT Payment date: 20080227 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050227 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080219 Year of fee payment: 8 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090227 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20091030 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20090228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090227 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090302 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090227 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20200210 Year of fee payment: 20 Ref country code: DE Payment date: 20200220 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20200220 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 50102205 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK07 Ref document number: 265917 Country of ref document: AT Kind code of ref document: T Effective date: 20210227 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MK Effective date: 20210227 |