DE19653242A1 - Active damping of industrial circular saw blade oscillations - Google Patents
Active damping of industrial circular saw blade oscillationsInfo
- Publication number
- DE19653242A1 DE19653242A1 DE1996153242 DE19653242A DE19653242A1 DE 19653242 A1 DE19653242 A1 DE 19653242A1 DE 1996153242 DE1996153242 DE 1996153242 DE 19653242 A DE19653242 A DE 19653242A DE 19653242 A1 DE19653242 A1 DE 19653242A1
- Authority
- DE
- Germany
- Prior art keywords
- circular saw
- active damping
- vibrations
- phase
- saw blade
- 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- Withdrawn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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/005—Vibration-damping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
- B23Q11/0039—Arrangements for preventing or isolating vibrations in parts of the machine by changing the natural frequency of the system or by continuously changing the frequency of the force which causes the vibration
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
- G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Das Kreissägewerkzeug stellt schwingungstechnisch eine Scheibe mit freiem Rand und festge haltenem Zentrum dar. Eine solche Scheibe schwingt Anregungen parallel zur Drehachse in charakteristischen Eigenschwingungen, wie sie von Chladnischen-Klangfiguren bekannt sind.The circular saw tool oscillates a disc with a free edge and fixed holding center. Such a disk vibrates excitations parallel to the axis of rotation characteristic natural vibrations as they are known from Chladnian sound figures.
Jede dieser Eigenschwingungen hat eine bestimmte "Eigenfrequenz". Eigenschwingungen in der angegebenen Richtung verbreitern die Schnittfuge des Kreissägewerkzeugs. Dies ist in der Praxis natürlich unerwünscht. Deshalb wird der Ausbildung der Eigenschwingungen durch eine Erhöhung der Dämpfungskonstanten entgegengewirkt, und zwar üblicherweise durch Ver breiterung des Sägeblatts. Dies hat zwar auch eine Verbreiterung der Schnittfuge zur Folge, jedoch ist die Schnittfuge ohne Schwingung genauer bestimmt und vor allem wird durch die Unterdrückung der Schwingungen ein "aus der Richtung laufen" des Kreissägewerkzeugs vermieden.Each of these natural vibrations has a certain "natural frequency". Natural vibrations in in the specified direction widen the kerf of the circular saw tool. This is in the Practice of course undesirable. Therefore, the formation of the natural vibrations by a Counteracted increase in damping constants, usually by Ver widening of the saw blade. This also results in a widening of the kerf, however, the kerf is determined more precisely without vibration and, above all, by the Suppression of the vibrations a "run from the direction" of the circular saw tool avoided.
Eine engere Schnittfuge wird bei relativ wertvollen Materialien oder bei hohen Schnittleistun gen immer interessanter. Eine Verringerung der Sägeblattdicke kann das Problem nur soweit lösen, wie durch die reduzierte Dämpfung keine unzulässigen Eigenschwingungen angeregt werden. Die reduzierte Eigendämpfung aufgrund der geringeren Materialdicke kann jedoch ersetzt werden durch aktive Dämpfungsmaßnahmen.A tighter kerf is used with relatively valuable materials or with high cutting performance more and more interesting. A reduction in the saw blade thickness can only solve the problem so far solve how no impermissible natural vibrations are excited by the reduced damping will. The reduced internal damping due to the lower material thickness can, however be replaced by active damping measures.
Besonders erfolgversprechend ist in dieser Hinsicht eine aktive Dämpfung des Kreissägewerkzeugs, indem Eigenschwingungen aktiv durch gegenphasig aufge brachte Momentenimpulse sofort bedämpft werden.In this regard, active damping of the Circular saw tool by actively vibrating through active phase opposition brought momentum be dampened immediately.
Erfindungsgemäß soll dies durch phasenrichtig eingebrachte mechanische oder elektromagneti sche Kraftwirkungen erfolgen. Eine schematische Darstellung des Verfahrens und eine dazu geeignete Vorrichtung zeigt die Abbildung.According to the invention, this is done by mechanical or electromagneti inserted in the correct phase force effects occur. A schematic representation of the method and one the figure shows a suitable device.
Die Dämpfungseinrichtung kann günstig unterhalb des Sägetisches angebracht werden. Zu nächst wird bei A mit Hilfe eines Sensors der aufgrund sich überlagernder Eigenschwingungen resultierende aktuelle Schwingungszustand gemessen. Mit der bekannten Umfangsgeschwin digkeit kann die Fortbewegung dieser Störung bestimmt werden. Dadurch kann in Punkt B in einem passender Phasenlage eine Kraft so auf die Scheibe ausgeübt werden, daß sie der resul tierenden Eigenschwingung entgegengesetzt ist. Dadurch wird die Schwingung des Kreissäge werkzeugs aktiv bedämpft.The damping device can be conveniently attached below the saw table. To next at A with the help of a sensor is due to the overlapping natural vibrations resulting current vibration condition measured. With the known circumferential speed The locomotion of this disorder can be determined. In point B in a suitable phase position a force is exerted on the disc so that it results in the resul ting natural vibration is opposite. This causes the vibration of the circular saw tool actively damped.
Bei einer aktiven Bedämpfung mit Elektromagneten können bei Bedarf auch mehrere Elektro magnete, in unterschiedlichen Umfangswinkeln oder Radien angebracht werden.With active damping with electromagnets, several electrics can be used if required magnets, in different circumferential angles or radii.
Alternativ kann die aktive Dämpfung durch magnetische Kraftwirkung auch dadurch erfolgen, daß statt der vorstehend genannten Elektromagnete eine Anordnung gewählt wird, die einem "Reluktanzmotor" aus der Linearmotortechnik entspricht. Hier wird das sich drehende Kreissä gewerkzeug durch ein magnetisches Wanderfeld in Linearanordnung aktiv bedämpft.Alternatively, the active damping by magnetic force action can also take place by that instead of the electromagnets mentioned above, an arrangement is chosen that one "Reluctance motor" from linear motor technology corresponds. Here is the rotating circular saw tool actively damped by a magnetic traveling field in a linear arrangement.
Erfindungsgemäß kann die aktive Bedämpfung auch durch mechanische Krafteinwirkung er folgen, wenn auf der Scheibe von beiden Seiten aufliegende Dämpfer durch Piezoelemente phasenrichtig angesteuert werden.According to the invention, the active damping can also be caused by mechanical force follow if there are dampers on both sides of the disc due to piezo elements be controlled in the correct phase.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996153242 DE19653242A1 (en) | 1996-12-20 | 1996-12-20 | Active damping of industrial circular saw blade oscillations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996153242 DE19653242A1 (en) | 1996-12-20 | 1996-12-20 | Active damping of industrial circular saw blade oscillations |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19653242A1 true DE19653242A1 (en) | 1998-06-25 |
Family
ID=7815492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996153242 Withdrawn DE19653242A1 (en) | 1996-12-20 | 1996-12-20 | Active damping of industrial circular saw blade oscillations |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19653242A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007014979A1 (en) * | 2005-08-01 | 2007-02-08 | Reijo Viljanen | Method for straining and steering of a blade in a saw device and steering and straining devices |
WO2007076847A3 (en) * | 2006-01-04 | 2007-11-15 | Fraunhofer Ges Forschung | Holding device for tools for separative and/or metal-cutting machining |
DE102007005581A8 (en) * | 2006-05-22 | 2008-05-08 | Esterer Wd Gmbh | Band saw and method for positioning a band saw blade in space |
WO2009003738A1 (en) * | 2007-06-29 | 2009-01-08 | Robert Bosch Gmbh | Handheld machine tool |
WO2012038578A1 (en) * | 2010-09-23 | 2012-03-29 | Reijo Viljanen | Device for stabilizing rotation of a blade in a circle saw |
WO2013087976A1 (en) * | 2011-12-14 | 2013-06-20 | Reijo Viljanen | Stabilization device for a blade of a saw device |
US8960323B2 (en) | 2011-10-18 | 2015-02-24 | Robert Bosch Gmbh | Semi-active anti-vibration systems for handheld electrical power tools |
EP3260228A1 (en) * | 2016-06-23 | 2017-12-27 | KEURO Besitz GmbH & Co. EDV-Dienstleistungs KG | Sawing machine and guiding device for a saw band or saw blade of a sawing machine |
CN110209212A (en) * | 2019-07-05 | 2019-09-06 | 吉林大学 | A kind of High Speed Rotating Disks At Elevated inner edge semiconductor temperature-control stability maintenance vibration absorber |
-
1996
- 1996-12-20 DE DE1996153242 patent/DE19653242A1/en not_active Withdrawn
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007014979A1 (en) * | 2005-08-01 | 2007-02-08 | Reijo Viljanen | Method for straining and steering of a blade in a saw device and steering and straining devices |
WO2007076847A3 (en) * | 2006-01-04 | 2007-11-15 | Fraunhofer Ges Forschung | Holding device for tools for separative and/or metal-cutting machining |
DE102007005581A8 (en) * | 2006-05-22 | 2008-05-08 | Esterer Wd Gmbh | Band saw and method for positioning a band saw blade in space |
US8250954B2 (en) | 2006-05-22 | 2012-08-28 | Esterer Wd Gmbh | Band saw and method of spatially positioning a band saw blade |
RU2457084C2 (en) * | 2007-06-29 | 2012-07-27 | Роберт Бош Гмбх | Hand-held machine |
CN101720266B (en) * | 2007-06-29 | 2012-05-02 | 罗伯特·博世有限公司 | Handheld machine tool |
US8250768B2 (en) | 2007-06-29 | 2012-08-28 | Robert Bosch Gmbh | Handheld power tool |
WO2009003738A1 (en) * | 2007-06-29 | 2009-01-08 | Robert Bosch Gmbh | Handheld machine tool |
WO2012038578A1 (en) * | 2010-09-23 | 2012-03-29 | Reijo Viljanen | Device for stabilizing rotation of a blade in a circle saw |
US8960323B2 (en) | 2011-10-18 | 2015-02-24 | Robert Bosch Gmbh | Semi-active anti-vibration systems for handheld electrical power tools |
WO2013087976A1 (en) * | 2011-12-14 | 2013-06-20 | Reijo Viljanen | Stabilization device for a blade of a saw device |
EP3260228A1 (en) * | 2016-06-23 | 2017-12-27 | KEURO Besitz GmbH & Co. EDV-Dienstleistungs KG | Sawing machine and guiding device for a saw band or saw blade of a sawing machine |
US10773320B2 (en) | 2016-06-23 | 2020-09-15 | Keuro Besitz Gmbh & Co. Edv-Dienstleistungs Kg | Sawing machine and guiding device for a saw band or saw blade of a sawing machine |
CN110209212A (en) * | 2019-07-05 | 2019-09-06 | 吉林大学 | A kind of High Speed Rotating Disks At Elevated inner edge semiconductor temperature-control stability maintenance vibration absorber |
CN110209212B (en) * | 2019-07-05 | 2024-05-17 | 吉林大学 | Semiconductor temperature control maintenance vibration damper for inner edge of high-speed rotating disc |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee | ||
8170 | Reinstatement of the former position | ||
8139 | Disposal/non-payment of the annual fee |