EP1323496A1 - Ultraschallkernbohrkrone - Google Patents
Ultraschallkernbohrkrone Download PDFInfo
- Publication number
- EP1323496A1 EP1323496A1 EP02406074A EP02406074A EP1323496A1 EP 1323496 A1 EP1323496 A1 EP 1323496A1 EP 02406074 A EP02406074 A EP 02406074A EP 02406074 A EP02406074 A EP 02406074A EP 1323496 A1 EP1323496 A1 EP 1323496A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill bit
- core drill
- cylinder tube
- bit according
- amplitude
- 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
Images
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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
-
- 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
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/08—Honing tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/895—Having axial, core-receiving central portion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/895—Having axial, core-receiving central portion
- Y10T408/8957—Having axial, core-receiving central portion and having stepped cutting edges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/896—Having product-receiving chamber
Definitions
- the invention relates to a drive that rotates about the axis of symmetry Core drill bit with cutting or grinding tools for the abrasive removal of mineral Substrates such as rock, which has an axial ultrasound excitation.
- Pot-shaped core drill bits usually consist of an end face Grinding bodies occupied cylinder tube and an opposite end face connected Cover, which has an insertion end in the middle of the axis for at least one has rotating tool device. With a usual superposition with ultrasound in the Range from 20 kHz to 200 kHz at a natural frequency of the core bit, this is from an actuator in the insertion end centrally excited in the center of the axis.
- Such core bits can only be realized up to small diameters of the cylinder tube of about 100 mm, because when engaging in the subsoil, due to the larger with larger diameters Relationship to the excitation diameter of the actuator, no robust vibration, i.e. also with high damping via an axial force required for abrasive degradation on the Cylinder tube in which sufficiently stable, axial longitudinal vibrations can be excited.
- DE3812917 has a natural frequency, not specified in more detail operated, slot drill longitudinal openings in a drill bit. Also points According to DE3635806, an ultrasonic vibrator that can be controlled with respect to the vibration pattern several equidistant longitudinal slots in a cylindrical base body, whereby the Remaining webs act as pure longitudinal oscillators.
- a core drill bit has a cylinder tube and an end face connected lid, which is axial in the center of the axis with a natural frequency Bending vibrations is excited.
- one stimulates bending vibrations Grinding wheel with radial grinding wheels of different thickness a concentric Cross-sectional jump at a geometrically undefined location.
- an ultrasonic transducer to increase the directivity of a flat radiated sound field on a bending vibrating plate, which is concentric Has cross-sectional jumps arranged on amplitude oscillation node circles are.
- the object of the invention is to implement a larger core drill bit Diameter with a robust vibration with central, axial ultrasonic excitation Excitation behavior for axial longitudinal vibrations in the cylinder barrel.
- Another Aspect consists in increasing the axial vibration amplitude at the axial end of the Cylinder tube.
- a core bit for the abrasive removal of mineral Surfaces with a cylinder tube with cutting or grinding bodies on the front and an oppositely connected front cover, which in the middle of the axis Has insertion end for receiving in an at least rotating tool, one with respect to a target excitation frequency to form an integer number of Amplitude antinodes of the concentric bending vibration dimensioned Cover on, characterized in that the cylinder tube with respect to the Target excitation frequency for forming an integer number of Amplitude antinodes of the axial longitudinal vibrations is dimensioned.
- the lid advantageously has a position close to one Amplitude vibration node circle of a bending natural vibration a concentric Cross-sectional jump on.
- the cross-sectional jump at the location of an amplitude vibration node circle in the cover is used for the amplitude transformation of the bending vibration with a significant increase the amplitude of the antinode occurring at the base of the cylinder tube, which in the cylinder barrel has axial longitudinal vibrations with a significantly increased amplitude stimulates, which are thus sufficiently vibrationally robust.
- the geometric location this amplitude vibration node circle is close to the position of the Amplitude vibration node of the concentrically standing radial waves, it being at a radial cross-sectional jump to a slight shift in the location of the Amplitude vibration node is coming.
- this is preferably dimensioned to a total of two or three amplitude vibration nodes with respect to the target excitation frequency of, for example, 20 kHz.
- a further advantageous thickness ratio of the radially outer to the radially inner sides of the cross-sectional jump from 0.2 to 0.4 determines a relative radius range for the position of the cross-sectional jump at the node assigned from the inside according to the table below, the optimum being in parentheses: Total amplitude node No.
- a core drill bit has a cylinder tube with grinding wheels on the front and one opposite frontally connected cover, which has an insertion end in the middle of the axis for receiving in has an at least rotating tool, in the cylinder barrel exclusively in Axial area of the axial longitudinal inherent amplitude vibration nodes circumferentially equidistantly arranged, longitudinally oriented to the axis of symmetry, elongated Material recesses.
- the core drill bit Due to the material recesses elongated along the axis of symmetry on the Longitudinal inherent vibration nodes are the ones in between Cylinder shells are no longer circumferentially coupled to one another by vibration, which suppresses the excitation of parasitic, energy-consuming, radial modes becomes.
- the core drill bit Through the circumferentially with each other in the area of the longitudinal natural vibration bellies vibration-coupled cylinder shells, the core drill bit has a slim Longitudinal transducer corresponding to natural frequency, which differs from that of one Cylinder tube differs. The additional energy leads to axial Longitudinal vibrations with significantly increased amplitude, which is therefore sufficient vibrationally robust are excited.
- the elongated material recesses are advantageously oriented axially parallel, as a result of which none parasitic shear modes are excited.
- the elongated material recesses are advantageously designed as longitudinal slots, which completely suppresses the radial modes.
- the core drill bit advantageously has a cross-sectional jump and elongated Material recesses on, which results in a further increase in the amplitude by the Superposition of both individual effects results.
- a core drill bit 1 has a large diameter a thin-walled cylinder tube 3 with abrasive bodies 2 and one Opposite front-connected, thin-walled lid 4, which in the Symmetry and axis of rotation A an insertion end 5 for positive inclusion in a shown rotating tool.
- the insertion end 5 is an axial Ultrasonic vibration stimulating, part of a schematically indicated electro-acoustic Actuator 6 in the form of an inductively supplied with voltage via a rotary transformer Piezo converter arranged.
- the cover 4 has one at the radial point Amplitude vibration node circuit 7 of a bending natural vibration 8 with a Amplitude maximum at the axis of symmetry A and at the base of the cylinder tube 3 one concentric cross-sectional jump 9, with an increase in amplitude at the approach formed.
- the axial area x is exclusively in the axial area
- Longitudinal inherent amplitude vibration node 10 with an elongation maximum both end faces circumferentially equidistant, axially parallel to the axis of symmetry A oriented, elongated material recesses 11 in the form of longitudinal slots, which are positioned at 1/4 and / or 3/4 of the relative length.
- Cover projection 12 radially by a quarter of the wavelength of the natural bending vibration 8 the cylinder tube 3 over.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Drilling Tools (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Catalysts (AREA)
- Catching Or Destruction (AREA)
Abstract
Description
Amplitudenschwingungsknoten insgesamt | Nr. des Knotens am Querschnittssprung | relativer Radius des Querschnittssprungs | Dickenverhältnis am Querschnittssprung |
3 | 1 | 0,25 - 0,40 (0,30) | 0,2 - 0,4 (0,3) |
3 | 2 | 0,50 - 0,70 (0,60) | 0,2 - 0,4 (0,33) |
2 | 2 | 0,70 - 0,90 (0,82) | 0,2 - 0,4 (0,33) |
Claims (7)
- Kernbohrkrone zum abrasiven Abtragen von mineralischen Untergründen mit einem stirnseitig mit Schneid- oder Schleifkörpern (2) besetzten Zylinderrohr (3) und einem gegenüberliegend stirnseitig verbundenen Deckel (4), welcher in der Achsmitte ein Einsteckende (5) zur Aufnahme in ein zumindest drehendes Werkzeuggerät aufweist sowie bezüglich einer Sollanregungsfrequenz zur Ausbildung einer ganzzahligen Anzahl von Amplitudenschwinungsbäuchen der konzentrischen Biegeschwingung dimensioniert ist, dadurch gekennzeichnet, dass das Zylinderrohr (3) bezüglich der Sollanregungsfrequenz zur Ausbildung einer ganzzahligen Anzahl von Amplitudenschwinungsbäuchen der axialen Longitudinalschwingungen dimensioniert ist.
- Kernbohrkrone nach Anspruch 1, dadurch gekennzeichnet, dass im Deckel (4) nahe der Stelle eines Amplitudenschwingungsknotenkreises (7) einer Biegeeigenschwingung (8) ein konzentrischer Querschnittssprung (9) vorhanden ist.
- Kernbohrkrone nach Anspruch 1, dadurch gekennzeichnet, dass im Zylinderrohr (3) ausschliesslich im Axialbereich (x) der axialen Longitudinaleigenamplitudenschwingungsknoten (10) umfänglich äquidistant angeordnete, längs zur Symmetrieachse (A) orientierte, längliche Materialausnehmungen (11) vorhanden sind.
- Kernbohrkrone nach Anspruch 3, dadurch gekennzeichnet, dass die länglichen Materialausnehmungen (11) achsparallel orientiert sind.
- Kernbohrkrone nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die länglichen Materialausnehmungen (11) als Längsschlitze ausgebildet sind.
- Kernbohrkrone nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass sowohl der Querschnittssprung (9) als auch längliche Materialausnehmungen (11) vorhanden sind, welche optional bei 1/4 und/oder 3/4 der relativen Länge des Zylinderrohrs (3) positioniert sind.
- Kernbohrkrone nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass am Deckel (4) ein radial über das Zylinderrohr (3) überstehender Deckelüberstand (12) vorhanden ist, welcher optional um ein Viertel der Wellenlänge der Biegeeigenschwingung (8) übersteht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10162636A DE10162636A1 (de) | 2001-12-20 | 2001-12-20 | Ultraschallkernbohrkrone |
DE10162636 | 2001-12-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1323496A1 true EP1323496A1 (de) | 2003-07-02 |
EP1323496B1 EP1323496B1 (de) | 2008-02-13 |
Family
ID=7709950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02406074A Expired - Lifetime EP1323496B1 (de) | 2001-12-20 | 2002-12-09 | Ultraschallkernbohrkrone |
Country Status (5)
Country | Link |
---|---|
US (1) | US6948574B2 (de) |
EP (1) | EP1323496B1 (de) |
JP (1) | JP4319400B2 (de) |
AT (1) | ATE385876T1 (de) |
DE (2) | DE10162636A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014064116A2 (de) * | 2012-10-22 | 2014-05-01 | Sauer Ultrasonic Gmbh | Vibrierendes werkzeug, verfahren zur werkzeugkonstruktion |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005000027A1 (de) * | 2005-04-06 | 2006-10-12 | Hilti Ag | Spannvorrichtung für axial harmonisch schwingende Bauteile |
US20080100125A1 (en) * | 2006-11-01 | 2008-05-01 | Les Staples | Abrasive cutter |
GB0625301D0 (en) * | 2006-12-19 | 2007-01-24 | Airbus Uk Ltd | Method and system for making holes in composite materials |
MX2009011460A (es) * | 2007-04-26 | 2009-11-10 | Welltec As | Sistema de perforacion con un cabezal de perforacion de barril impulsado por un tractor en el fondo de la perforacion. |
WO2009015488A1 (en) * | 2007-08-01 | 2009-02-05 | Satnam Singh | Hole saw system with improved slug removability |
JP5556172B2 (ja) * | 2009-12-29 | 2014-07-23 | 日立工機株式会社 | ドリルビット |
US9884374B2 (en) | 2015-09-03 | 2018-02-06 | Irwin Industrial Tool Company | Hole cutter with multiple fulcrums |
US10137507B2 (en) | 2010-01-13 | 2018-11-27 | Irwin Industrial Tool Company | Hole cutter with multiple fulcrums |
WO2011088271A1 (en) | 2010-01-13 | 2011-07-21 | Irwin Industrial Tool Company | Hole cutter with chip egress aperture |
US8573907B2 (en) | 2010-01-13 | 2013-11-05 | Irwin Industrial Tool Company | Hole cutter with minimum tooth pitch to blade body thickness ratio |
US9724766B2 (en) | 2010-01-13 | 2017-08-08 | Irwin Industrial Tool Company | Hole cutter with multiple fulcrums |
US8579554B2 (en) * | 2010-01-13 | 2013-11-12 | Irwin Industrial Tool Company | Hole cutter with axially-elongated aperture defining multiple fulcrums |
EP2523771B1 (de) * | 2010-01-13 | 2020-02-26 | Black & Decker Inc. | Lochschneider mit axial verlängerter öffnung zur definition mehrerer drehpunkte |
US9808869B2 (en) * | 2010-01-13 | 2017-11-07 | Irwin Industrial Tool Company | Hole cutter with chip egress aperture |
USD659176S1 (en) | 2010-01-13 | 2012-05-08 | Irwin Industrial Tool Company | Hole saw |
US20140334892A1 (en) | 2010-04-27 | 2014-11-13 | Western Saw Manufacturers, Inc. | Support assembly for a core drill |
US8790052B2 (en) | 2010-04-27 | 2014-07-29 | Western Saw | Bolt on drive assembly for a core drill with high strength spoked reinforcer |
US10786852B2 (en) | 2010-04-27 | 2020-09-29 | Western Saw Manufacturers, Inc. | Support assembly for a core drill |
CN102476222B (zh) * | 2010-11-24 | 2014-12-10 | 南京德朔实业有限公司 | 用于振荡工具上的开孔器 |
WO2014015154A1 (en) | 2012-07-18 | 2014-01-23 | Milwaukee Electric Tool Corporation | Hole saw |
US9849553B2 (en) * | 2013-03-12 | 2017-12-26 | Christopher R. Bialy | Drilling safety system |
US20140360641A1 (en) * | 2013-06-05 | 2014-12-11 | Cooper Tire & Rubber Company | Tire tread with angled rib groove walls |
CN204603374U (zh) | 2013-12-19 | 2015-09-02 | 米沃奇电动工具公司 | 孔加工总成和可调节的孔加工系统 |
USD845362S1 (en) | 2017-12-04 | 2019-04-09 | Black & Decker Inc. | Holesaw |
CN216028284U (zh) | 2018-07-10 | 2022-03-15 | 米沃奇电动工具公司 | 孔锯 |
USD958855S1 (en) | 2019-12-09 | 2022-07-26 | Milwaukee Electric Tool Corporation | Hole saw |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3635806A1 (de) * | 1985-11-27 | 1987-06-04 | Taga Electric Co Ltd | Ultraschallvibrator |
DE4444853A1 (de) * | 1994-12-16 | 1996-06-20 | Hilti Ag | Handgerät zur materialabtragenden Bearbeitung von spröden und/oder duktil versagenden Werkstoffen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4697117A (en) * | 1985-11-27 | 1987-09-29 | Taga Electric Co., Ltd. | Rotary ultrasonic motor |
US4828052A (en) * | 1988-06-20 | 1989-05-09 | The United States Of America As Represented By The United States Department Of Energy | Ultrasonic drilling apparatus |
DE3824502A1 (de) * | 1988-07-20 | 1990-01-25 | Hilti Ag | Hohlbohrwerkzeug |
JPH0694087B2 (ja) * | 1991-07-05 | 1994-11-24 | 株式会社関西工具製作所 | 穿孔工具 |
DE69331152T2 (de) * | 1993-09-24 | 2002-06-20 | Nokia Networks Oy | Sanftes weiterreichen in einem zellularen kommunikationssystem |
US5813802A (en) * | 1995-11-30 | 1998-09-29 | House B.M. Co., Ltd. | Drilling tool assembly and its center drill and cup shape drill |
-
2001
- 2001-12-20 DE DE10162636A patent/DE10162636A1/de not_active Withdrawn
-
2002
- 2002-12-09 DE DE50211664T patent/DE50211664D1/de not_active Expired - Lifetime
- 2002-12-09 AT AT02406074T patent/ATE385876T1/de not_active IP Right Cessation
- 2002-12-09 EP EP02406074A patent/EP1323496B1/de not_active Expired - Lifetime
- 2002-12-18 US US10/322,825 patent/US6948574B2/en not_active Expired - Fee Related
- 2002-12-19 JP JP2002367911A patent/JP4319400B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3635806A1 (de) * | 1985-11-27 | 1987-06-04 | Taga Electric Co Ltd | Ultraschallvibrator |
DE4444853A1 (de) * | 1994-12-16 | 1996-06-20 | Hilti Ag | Handgerät zur materialabtragenden Bearbeitung von spröden und/oder duktil versagenden Werkstoffen |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014064116A2 (de) * | 2012-10-22 | 2014-05-01 | Sauer Ultrasonic Gmbh | Vibrierendes werkzeug, verfahren zur werkzeugkonstruktion |
WO2014064116A3 (de) * | 2012-10-22 | 2014-10-23 | Sauer Ultrasonic Gmbh | Vibrierendes werkzeug, verfahren zur werkzeugkonstruktion |
Also Published As
Publication number | Publication date |
---|---|
JP4319400B2 (ja) | 2009-08-26 |
DE50211664D1 (de) | 2008-03-27 |
ATE385876T1 (de) | 2008-03-15 |
US20030146024A1 (en) | 2003-08-07 |
JP2003200415A (ja) | 2003-07-15 |
EP1323496B1 (de) | 2008-02-13 |
US6948574B2 (en) | 2005-09-27 |
DE10162636A1 (de) | 2003-07-03 |
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