DE29911945U1 - Wood drill with a cylindrical cutting head - Google Patents
Wood drill with a cylindrical cutting headInfo
- Publication number
- DE29911945U1 DE29911945U1 DE29911945U DE29911945U DE29911945U1 DE 29911945 U1 DE29911945 U1 DE 29911945U1 DE 29911945 U DE29911945 U DE 29911945U DE 29911945 U DE29911945 U DE 29911945U DE 29911945 U1 DE29911945 U1 DE 29911945U1
- Authority
- DE
- Germany
- Prior art keywords
- cutting
- drill according
- wood drill
- cutting edges
- cutting edge
- 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
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
Description
Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically
Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically
Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically
Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically
Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically
Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically
Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically
Claims (12)
sowohl radiale Innenschneiden (22) als auch teilzylindrische Umfangsschneiden besitzt, die gegenüber den Innenschneiden (22) vorschneidwirksam sind,
wobei die Innenschneiden (22) an zwei zueinander diametralen Flügeln (14) sitzen und die Flügel (14) in zwei, über mehr als ein Viertelkreis (16) sich erstreckende Segmente (15) übergehen, welche einerseits eine glatt zylindrische Mantelfläche (18) aufweisen und andererseits die Umfangsschneiden tragen,
dadurch gekennzeichnet,
dass die Umfangsschneide annähernd im mittleren Segmentbereich (25) gegenüber der Innenschneide (22) axial zurückgesetzt ist und dort einen in der glatt-zylindrischen Mantelfläche sich radial öffnenden schneidunwirksamen Freiraum (20) bildet,
und dass jeweils ein Paar von Schneidnocken (23) an jeder der beiden Umfangsschneiden stehen bleiben, von denen der eine Schneidnocken (23) den Anfang und der andere (23) das Ende des Freiraums (20) begrenzen.1. Wood drill ( 10 ) with a cylindrical cutting head ( 12 ) which, in addition to a leading centering tip ( 21 )
has both radial internal cutting edges ( 22 ) and partially cylindrical peripheral cutting edges, which have a pre-cutting effect on the internal cutting edges ( 22 ),
wherein the inner cutting edges ( 22 ) sit on two diametrically opposed wings ( 14 ) and the wings ( 14 ) merge into two segments ( 15 ) which extend over more than a quarter circle ( 16 ) and which on the one hand have a smooth cylindrical outer surface ( 18 ) and on the other hand carry the peripheral cutting edges,
characterized by
that the circumferential cutting edge is axially set back approximately in the central segment region ( 25 ) with respect to the inner cutting edge ( 22 ) and forms an ineffective cutting space ( 20 ) opening radially in the smooth-cylindrical outer surface,
and that a pair of cutting cams ( 23 ) remain on each of the two circumferential cutting edges, of which one cutting cam ( 23 ) delimits the beginning and the other ( 23 ) the end of the free space ( 20 ).
und dass die Nut (31, 31') zum Brechen der beim Bohren anfallenden Späne dient.6. Wood drill according to one or more of claims 1 to 5, characterized in that the inner cutting edges ( 22 , 22 ') are provided with at least one groove ( 31 , 31 ') interrupting their respective cutting edge ( 32 , 32 ')
and that the groove ( 31 , 31 ') serves to break the chips generated during drilling.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29911945U DE29911945U1 (en) | 1999-07-08 | 1999-07-08 | Wood drill with a cylindrical cutting head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29911945U DE29911945U1 (en) | 1999-07-08 | 1999-07-08 | Wood drill with a cylindrical cutting head |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29911945U1 true DE29911945U1 (en) | 1999-10-21 |
Family
ID=8075881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29911945U Expired - Lifetime DE29911945U1 (en) | 1999-07-08 | 1999-07-08 | Wood drill with a cylindrical cutting head |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE29911945U1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001064407A1 (en) * | 2000-03-03 | 2001-09-07 | Johann Eberhard Gesellschaft M.B.H. | Drill, especially a forstner bit or a multi-spur machine bit |
US6612788B2 (en) | 2001-03-30 | 2003-09-02 | Black & Decker Inc. | Self-feed wood bit |
US6644899B2 (en) | 2000-03-03 | 2003-11-11 | Johann Eberhard Gesellschaft M.B.H. | Drill bit and process of producing a drill bit with improved cutting edges |
DE102006039426B4 (en) * | 2006-08-23 | 2008-08-28 | Horst Miebach Gmbh | Holzbohrer |
US7648316B2 (en) | 2006-01-26 | 2010-01-19 | Wolfcraft, Gmbh | Forstner drill bit |
DE202016001386U1 (en) | 2016-03-04 | 2016-03-17 | FAMAG-Werkzeugfabrik GmbH & Co. KG | Cylinder head drills |
DE102019218421A1 (en) * | 2019-11-27 | 2021-05-27 | Robert Bosch Gmbh | Wood drill |
-
1999
- 1999-07-08 DE DE29911945U patent/DE29911945U1/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001064407A1 (en) * | 2000-03-03 | 2001-09-07 | Johann Eberhard Gesellschaft M.B.H. | Drill, especially a forstner bit or a multi-spur machine bit |
US6644899B2 (en) | 2000-03-03 | 2003-11-11 | Johann Eberhard Gesellschaft M.B.H. | Drill bit and process of producing a drill bit with improved cutting edges |
US6612788B2 (en) | 2001-03-30 | 2003-09-02 | Black & Decker Inc. | Self-feed wood bit |
US7648316B2 (en) | 2006-01-26 | 2010-01-19 | Wolfcraft, Gmbh | Forstner drill bit |
DE102006039426B4 (en) * | 2006-08-23 | 2008-08-28 | Horst Miebach Gmbh | Holzbohrer |
US7665936B2 (en) * | 2006-08-23 | 2010-02-23 | Horst Miebach Gmbh | Wood drill bit |
DE202016001386U1 (en) | 2016-03-04 | 2016-03-17 | FAMAG-Werkzeugfabrik GmbH & Co. KG | Cylinder head drills |
DE102019218421A1 (en) * | 2019-11-27 | 2021-05-27 | Robert Bosch Gmbh | Wood drill |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R409 | Internal rectification of the legal status completed | ||
R207 | Utility model specification |
Effective date: 19991125 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20030201 |
|
R081 | Change of applicant/patentee |
Owner name: WUP PRAEZISIONSWERKZEUGE GMBH, DE Free format text: FORMER OWNER: GUSTAV WEBER SCHLAGRINGWERKZEUG-FABRIK, 42349 WUPPERTAL, DE Effective date: 20050117 |
|
R150 | Term of protection extended to 6 years |
Effective date: 20050117 |
|
R151 | Term of protection extended to 8 years |
Effective date: 20050812 |
|
R158 | Lapse of ip right after 8 years |
Effective date: 20080201 |