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`PatDocs- Full Text
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`DE-202006009799-U1 - Inductive treatment device
`
`Induktive Behandlungseinrichtung
`
`Abstract - inductive Treatment device, in particular inductive tensioning device for
`tools (4), wherein the treatment device (1) at least one electromagnetic Coil (5) and
`a cooling device (2) for the coil (5), characterized in that the coil (5) a plurality of
`windings (6) arranged at a mutual distance (7) wherein the cooling device (2) a
`circulation device (17) comprising a cooling fluid (15) by the spaced windings (6)
`
`with direct winding contact emotional.
`
`Induktive Behandlungseinrichtung, insbesondere induktive Spanneinrichtung fiir Werkzeuge (4), wobei die
`Behandlungseinrichtung (1) mindestens eine elektromagnetische Spule (5) und eine Kiihleinrichtung (2) fiir
`die Spule (5) aufweist, dadurch gekennzeichnet, dass die Spule (5) mehrere mit gegenseitigem Abstand
`(7) angeordnete Wicklungen (6) aufweist, wobei die Kihleinrichtung (2) eine Umwadlzeinrichtung (17)
`aufweist, die ein Kihlfluid (15) durch die beabstandeten Wicklungen (6) mit direktem Wicklungskontakt
`bewedt.
`1
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`16,16
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`17
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`' 18 \\
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`6
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`8
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`\
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`12
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`19
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`a
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`Publication Number:
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`DE202006009799
`
`Publication Date:
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`2007-10-25
`
`Application Number:
`
`DE202006009799U
`
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`Filing Date:
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`Priority Date:
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`2006-06-21
`
`2006-06-21
`
`Expected Expiration:
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`2010-01-01
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`Publication Type:
`
`Utility model
`
`Patent Status:
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`Expired - Lifetime
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`Current Assignee:
`
`FAVILAB DATENSYSTEME GMBH, DE
`
`Original Assignee:
`
`LUPOTRON GMBH
`
`Agentsnexere
`
`Predicted Status*
`
`Dead
`
`DocumentHistory
`
`Expected expiry date: 2010-01-01
`
`Utility model: 2007-10-25
`DE-202006009799-U1
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`CPC Classifications
`
`(inventive)
`HO5B6/14 (main)
`B23P11/027 (inventive)
`HO5B6/42 (inventive)
`
`IPC Classifications
`
`(inventive)
`HO5B6/42 (main)
`B23B31/117 inventive)
`HO5B6/14 (inventive)
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` Description (Machine translation)
`
`The The invention relates to an inductive treatment device, in particular an inductive clamping device for tools,
`with the features in the preamble of the main claim.
`
`Such inductive tool clamping device is known from DE 20 2005 012 366 U1 known. The inductive tensioning
`device has an electromagnetic coil which heats and expands a receiving cone with electromagnetic alternating
`fields to generate eddy currents, so that a tool, for example a cutter shaft, can be inserted into the cone opening
`and retained in the clamping connection after cooling and shrinking of the cone. For the coil, a cooling device is
`provided, which hasa plurality of cooling elements, which can be brought into contact with the coil. The cooling
`elements are designed as heat exchangersin plate or channel form, which are optionally traversed bya liquid
`coolant. The coil has tightly packed windings which optionally have recesses in places for the introduction of a
`cooling element.
`
`It Object of the present invention, a better cooling technology for electromagnetic coils show.
`
`The Invention solves this task with the features in the main claim.
`
`The claimed cooling technology has the advantage that the spaced coils of the coil directly from a circulated
`cooling fluid can be flown around and contacted. The heat transfer from the heated Winding on the cooling fluid is
`thus more direct and intensive than in the previously known heat exchangers, where the walls of the cooling
`element between the windings and the cooling medium. The direct flow allows the coil Furthermore a more even
`cooling because the fluid flow all coil areas or at least a very large part can achievethis.
`
`The Cooling technology according to the invention has as well the advantage that as a cooling fluid not just
`liquids, but also gases, in particular the ambient air, are used can. The latter is particularly cost-effective and
`allows a very simple and effective cooling device.
`
`The claimed cooling device has the further advantage of a simple structure and a simple Handling. The space
`requirement is very low. Especially at an air cooling can complex Additional aggregates omitted. It suffice simple
`blowers or other air circulation devices. The claimed cooling device is special as well economical and cost-
`effective. This is not only true for the purchase, but also for the operation of the cooling device and the
`maintenance costs.
`
`The cooling device works through the even and intensive cooling effect especially fast and effective. It is also
`possible, in addition to Coil and its windings also the clamping cone or another absorbed by the inductive
`treatment device recording or the like with to cool. The high cooling effect allows short cycle times. The coil
`cooling can while the coil operation and / or take place during breaks.
`
`The cooling device can with different cooling fluids, in particular air, but alternatively also with liquids, e.g.
`electrical insulating oils or the like work. In the dependentclaims are various design options for the cooling device
`specified. The cooling device is for any coil shapes and coil designs suitable. Especially can in one or more
`directions spaced windings in be formedin any suitable manner, e.g. in circuit board form or in the form of wire
`packagesor the like..
`
`In the dependent claims are further advantageous embodiments of the invention indicated.
`
`The The invention is for example and schematically in the drawings shown. In detail show:
`
`1: an inductive clamping device for tools with an electromagnetic coil and a cooling device with air cooling,
`
`2: a variant to 1 with another cooling device,
`
`3 to 5: different variants for embodiments of cooling devices and cooling fluid flows and
`
`6 a treatment device with a cooling device for a liquid cooling.
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`The invention relates to an inductive treatment device (1) with a cooling device (2 ). It also relates to a method
`for cooling electromagnetic coils and a cooling device per se.
`
`The inductive treatment device (1) may be formed in any desired manner and has at least one electromagnetic
`coil (5) and a cooling device ( 2 ) for this coil (s) (5). The inductive treatment device (1) may be formed in any
`suitable manner and serve for any purpose. In the exemplary embodiments shown, the inductive treatment device
`(1) as an inductive clamping device for tools ( 4 ) educated. Alternatively, the inductive treatment device (1) be
`a heater for heating workpieces or the like. With the clamping device shown (1), a recording (3 ), eg a metallic
`clamping cone with a receiving opening for the shank ofa tool ( 4) through the coil (5 ) generated
`electromagnetic alternating fields and thus induced alternating currents. Due to the heating, the clamping cone
`widens (3 ) and allows the insertion of the tool shank ( 4 ). After switching off and if necessary removing the coil (
`5 ) the clamping cone (3 ), where it shrinks and the inserted tool shank ( 4 ) holds in the shrink and tension fit.
`The clamping cone ( 3 ) can then be removed and used on a machine tool or the like. Similarly, heating and
`widening of the clamping cone ( 3 ) a tool (4 ) and against another tool ( 4 ) To deceive. The inductive treatment
`device (1) can be a delivery device for the single or multiple existing electromagnetic coil (5 ) exhibit. The
`cooling device ( 2 ) can with the coil (5 ) are moved.
`
`The electromagnetic coil (5 ) can be of any type. In the embodiments shown, it has a substantially annular shape
`and surrounds the clamping cone arrangedin the coil interior ( 3 ). The sink (5 ) is provided with a suitable power
`supply and a controller and may further be arranged to be adjustable on a holder, so that their held on the
`stationary clamping cone (3 ) can be put over. The said additional devices for the coil (5 ) are not shown for
`reasons ofclarity.
`
`The sink (5 ) has several windings (6 ), which may be formed in any suitable manner. For example, it may be
`winding boards. Alternatively, wire packages or winding packages are possible. The windings (6 ) are at a mutual
`distance (7 ) to form free spaces between the windings ( 6 ) arranged. The distancesor free spaces(7 ) can
`consist of one or more directions. For example, disk-shaped winding layers can be arranged at a distance one
`abovethe other, which also results in disk-shaped free spaces. Alternatively or additionally, the windings (6 ) of
`the toroid be radially spaced. The arrangement and formation of open spaces(7 ) can be arbitrary and especially
`multiaxial. The windings ( 6 ) are suitably connected to each other in an electrically conductive manner.
`
`The cooling device ( 2 ) has a circulation device (17 ) for a cooling fluid (15 ), which of the circulation device (17 )
`through the open spaces(7 ) is moved in a suitable manner and with the windings (6 ) enters into direct physical
`contact. This results in a direct heat transfer from thosein coil operation, heating windings ( 6 ) on the cooling
`fluid (15 ) instead of. By generating a fluid flow (16 ), the heat transfer is particularly intense and the cooling
`effect correspondingly effective.
`
`The cooling device ( 2 ), the circulation device (17 ) and the cooling fluid used (15 ) can be designed differently.
`In the embodiments, various variants are given for this purpose.
`
`In the embodiments of 1 to 6 is used as cooling fluid (15 ) a gas, in particular the ambient air of the treatment
`device (1) used. In the variant of 6 comesa liquid cooling fluid (15 ) for use. The cooling fluids (15 ), in particular
`the cooling liquid can have electrically insulating properties. This is favorable if the current-carrying windings (6 )
`are open.
`
`1 showsa variant in which the coil (5 ) of a housing ( 8th ) is surrounded at least in certain areas. The housing (
`8th ) may have a substantially cylindrical shape and at the end walls (10 ) Openings for the passage of the
`clamping cone (3 ) and the tool ( 4 ) exhibit. In the embodiment shown, the coil is (5 ) in the radial direction
`relative to the clamping cone ( 3 ) distant. An electrical contact is avoided by the distance. Alternatively, the
`housing ( 8th ) on the inside a cylindrical or conical inner wall (not shown), which the coil (5 ) of the clamping
`cone (3 ) separates. This gives the housing ( 8th ) a ring channel shape. The said inner wall can be used for the
`cooling fluid (15 ) be permeable or impermeable. A similar variant in the housing design is also at 2 possible.
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`In the variant of 1 if the circulation device (17 ) from two or more blowers (18 . 19 ), which are arranged offset in
`the circumferential direction to each other and, for example, diametrically opposite each other with respect to the
`cone and coil axis. The blowers (18 . 19 ) can be formed in any suitable manner and on the outside of the side wall
`(9) of the housing ( 8th ) can be arranged. The one blower (18 ) sucks in ambient air and pushesit through one
`or more housing openings (11 ) in the side wall ( 9 ) in the housing interior and by the spaced windings (6 ). The
`diametrically opposite second blower (19 ) supports the space generated in the housing interior and through the
`free spaces( 7 ) directed fluid flow (16 ), in which the cooling air (15 ) out of the housing ( 8th ) sucks and blows
`out into the environment. In the variant of 1 is a substantially transverse to the cone and coil axis directed fluid
`flow (16 ) generated. The fluid flow (16 ) can be multi-layer depending on the winding training. In 1 are the
`windings ( 6 ) are arranged one abovethe other in the coil axis direction at a spacing, whereby free spaces
`directed transversely to the coil axis (7 ) are formed.
`
`2 showsa variant with a 90 ° deflected fluid flow (16 ) and another circulating device (17 ). In this case, also with
`ambientair as the cooling fluid (15 ), whereby the cooling air through blow boxes ( 20 ) on one of the end walls (
`10 ) of the housing ( 8th ) and via housing openings (11) and at the opposite end wall (10 ) via housing openings (
`12 ) is discharged again and possibly blown into the environment. Here, a substantially along the coil axis directed
`fluid flow (16 ), wherein the windings ( 6 ) are spacedin the radial direction. The fluid flow (16 ) can be inserted
`into the blow boxesin any suitable way ( 20 ), which can be done, for example, by external blowers or by
`connection to a compressed air supply with compressor and pressure tank or the like. The blow boxes ( 20 ) can
`on the housing ( 8th ) and possibly with the housing ( 8th ) are moved. Alternatively, they can be arranged
`stationary and, when the housing is lowered, ( 8th ) connect tightly. The eg annular or segment-like blow boxes(
`20 ) can be attached to the lower or upper end wall (10 ) or assigned. In a modification of the embodiment shown
`suction boxes can also be arranged on the opposite end wall. 2 also shows, for example, the design and
`arrangement of housing openings (12 ) on a housing wall (10 ). In the other embodiments, the housing openings
`are not shown in detail and only the reference number. The housing openings (11. 12 ) can be, for example,
`evenly distributed in a grid or in any other way distributed circular or prismatic wall passages. Preferably, the
`housing openings (11.12 ) with the free spaces(7 ) and allow a direct flow or outflow.
`
`3 to 5 show in a schematic plan view of an inductive treatment device (1) various design options for the fluid flow
`(16 ). The cooling fluid (5 ) is in these cases also ambientair, but may alternatively be another externally supplied
`gas, which possibly after flowing through the coil (5 ) collected again if necessary prepared and reused.
`
`In the variant of 3 is on a housing side a circulating device (17 ) arranged, for example, over the entire width and
`height of the cubic in this example housing ( 8th ) and its side wall. Alternatively, the circulation device (17 ) also
`have a blow box, a gas connection or the like. In the embodiment shown, the blower sucks (18 Ambient air and
`pushesit across the coil (5 ) and their spaced windings (6 ). On the opposite side of the housing enters the fluid
`flow (16 ) also on a broad front again. The fluid flow (16 ) flows around the conical area and a possibly existing
`inside ring wall of the housing ( 8th ). The flow direction ( 23 ) is rectified in this case and essentially uniaxial.
`Alternatively, on the opposite side of the housing another blower for sucking off the fluid flow (16 ) can be
`arranged. The training can be similar to in 1 be.
`
`In the variant of 4 is with two fluid flows (16 ), the opposite directions of flow ( 23 ) to have. For this purpose, on
`the opposite sides of the housing in each case on a side wall half a blower (18 . 19 ), which sucksin outside air
`and pressesinto the housing interior. The flow through the coil (5 ) can be amplified when suction fans are
`arranged on the respective opposite housing wall.
`
`In a modification of the embodiment shown, for separating the two oppositely directed fluid flows (16 ) in the
`housing ( 8th ) a substantially longitudinal inner wall on both sides of the clamping cone (3 ) or be provided
`following an annular housing inner wall.
`
`In the variant of 5 are the housing openings (11.12 ) for the inlet and outlet of the cooling fluid (15 ) are arranged
`on the same side of the housing. This creates an annular and through the coil (5 ) circulating fluid flow (16 )
`generated. To guide the air flow can in the housing ( 8th ) a bent by approximately 180 ° flow channel (13 ) are
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`formed by retracted inner walls. The outer and substantially U-shaped channel wall encloses possibly with a radial
`distance the coil (5 ) and their windings (6 ). The inner channel wall is formed by two connecting walls which
`extend between the housing side wall and the clamping cone (FIG. 3 ). The fluid flow (16 ) is in the flow channel (
`13 ) is deflected by 180 °. For the supply and removal of cooling air (15 ) provide, for example, blowing and suction
`boxes ( 20 ), which are attached to the housing tions (11. 12 ) connect.
`
`In the in 1 to 5 variants shown, the housing ( 8th ) not be closed. Scatter losses of the cooling air (15 ) can be
`accepted.
`
`In the variant of 6 comesa liquid cooling fluid (15 ), which consists for example of an electrically insulating oil or
`the like. For liquid coolants ( 15 ) it is recommended to form at least one closed fluid chamber ( 14 ) in the housing
`( 8th ), in which the windings spaced apart in one or more directions ( 6 ) and the coolant are absorbedleak-free.
`The fluid chamber (14 ) may for example be annular and the clamping cone ( 3 ) surrounded circumferentially. By
`a suitable circulation device (17 ) can in the fluid chamber ( 14 ) a circumferentially circulating fluid flow are
`generated. The circulation device (17 ) in this case has two or morefluid ports ( 21. 22 ) for a supply and removal
`of the cooling liquid (15 ) on. At the example neck-like fluid connections (21.22 ) may be connectedto a suitable
`ring line with a pump for generating the recirculation flow. The fluid connections (21. 22 ) can be diametrically
`opposedto each other. In a modification of the embodiment shown, a plurality of fluid chambers (14 ) and
`separated from each other via a corresponding circulation device (17 ) with cooling liquid (15 ) are supplied.
`Furthermore, it is possible to use a plurality of segment-like fluid chambers ( 14 ) in the ring around the coil axis
`and in each caseindividually by means offluid connections ( 21. 22 ). The fluid connections ( 21. 22 ) can, for
`example, on the upper and lower end of the housing ( 8th ) to produceafluid flow directed substantially along the
`spool axis. The fluid connections ( 21. 22 ) can be interconnected byring lines and connected to a common pump
`or other circulating device.
`
`In the 6 embodiment shown is also suitable for any other cooling fluids (15 ), in particular cooling gases. This
`embodiment allows a leak-free guidance of the cooling fluid (15 ) in a circuit and possibly a treatment and reuse
`of the cooling fluid (15 ).
`
`In the embodiments shown, the cooling fluid (15 ) its state of aggregation when cooling the coil (5 ) and the heat
`absorption at. The heat can be done in any suitable manner. Cooling air is blown into the environment and cools
`down therebyitself. Other recirculating coolants (15 ) can be passed through a separate and external cooling
`device, such as a plate cooler or the like. There, from the coil ( 5 ) absorbed heat.It is also possible to use coolant
`(15 ), which in the heat absorption at the coil (5 ) change their state of aggregation. These may be, for example,
`coolants such as those used in heat pumps, refrigerators or the like. In this coolant circuit, a compressor and
`other units can be arranged.
`
`In a further modification of the illustrated and described embodiments, the air cooling of the coil (5 ) without
`housing ( 8th ) possible. In this case, electrically insulated windings (6 ) are used, which are connected to web-
`like holders to the coil (5 ) to give sufficient intrinsic stability. The sink (5 ) may optionally be enclosed by one or
`more narrow brackets, on which one or more fans (18 . 19 ) are arranged and fixed. The cooling air flow can be at
`different peripheral locations of the coil (5 ) exit.
`
`In addition, further modifications of the embodiments shown and described are possible. The modifications
`concern eg the coil (5 ), which may have a conical shape. The sink (5 ) may also be multi-part and consist of
`several individual and possibly individually controllable coil parts. Furthermore, it is possible to use the coil ( 5 )
`and possibly existing housing ( 9 ) adjustable, wherein, for example, the inner diameter and the opening width for
`receiving different clamping cone (3 ) or the like can be adjusted. The cooling device ( 2 ) adapts to these
`changesin shape accordingly. The housing ( 8th ) is also capable of variation. In the embodiments shown it
`consists of an electrically insulating and magnetically conductive material. The housing ( 8th ) can also be
`supplemented with a pole piece on the side of the housing, which is the front cone end and the mouth of the tool
`(4) is adjacent.
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`Variable is also the design of the cooling device ( 2 ) and in particular their circulation device (17 ). Basically, the
`circulation device (17 ) can be configured in any suitable manner in orderin the region of the spaced windings (6
`) a fluid flow (16 ) to create.
`
`1 i
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`nductive Treatment device, clamping device
`
`2 c
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`ooling device
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`3 A
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`dmission, clamping cone
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`4 T
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`ool
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`5 K
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`itchen sink
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`6 w
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`inding
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`7 F
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`ree space, distance
`8th
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`casing
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`9 S
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`ide wall
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`10
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`bulkhead
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`11
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`Housing opening, inlet
`12
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`Housing opening, outlet
`13
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`flow channel
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`14
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`closed fluid chamber
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`15
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`Cooling fluid, Air, liquid
`16
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`fluid flow
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`17
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`circulation
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`18
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`fan
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`19
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`fan
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`20
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`blow box
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`21
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`fluid port
`22
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`fluid port
`23
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`flow direction
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`Description
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`PatDocs- Full Text
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`Die Erfindung betrifft eine induktive Behandlungseinrichtung, insbesondere eine induktive Spanneinrichtung fur
`Werkzeuge, mit den Merkmalen im Oberbegriff des Hauptanspruchs.
`
`Eine solche induktive Werkzeugeinspannvorrichtung ist aus der DE 20 2005 012 366 U1 bekannt. Die induktive
`Spanneinrichtung besitzt eine elektromagnetische Spule, die einen Aufnahmekegel mit elektromagnetischen
`Wechselfeldern unter Erzeugung von Wirbelstr6men erwarmt und auf weitet, so dass ein Werkzeug, z.B. ein
`Fraserschaft, in die Kegeléffnung eingesteckt und nach dem Abkthlen und Schrumpfen des Kegels im
`Spannschluss festgehalten werden kann. Fur die Spule ist eine Kuhleinrichtung vorgesehen, die mehrere
`Kuhlelemente aufweist, welche mit der Spule in Beruhrungskontakt gebracht werden kénnen. Die Kuhlelemente
`sind als Warmetauscher in Platten- oder Kanalform ausgebildet, die ggf. von einem flussigen Kuhimittel
`durchstr6mt werden. Die Spule hat dicht gepackte Wicklungen, die ggf. stellenweise Aussparungen fir die
`Einbringung eines Kuhlelements aufweisen.
`
`Es ist Aufgabe der vorliegenden Erfindung, eine bessere Kuthltechnik fur elektromagnetische Spulen aufzuzeigen.
`
`Die Erfindung lést diese Aufgabe mit den Merkmalen im Hauptanspruch.
`
`Die beanspruchte Kuhltechnik hat den Vorteil, dass die beabstandeten Wicklungen der Spule direkt von einem
`umgewalzten Kuhlfluid umflossen und kontaktiert werden kénnen. Der Warmetbergang von der aufgeheizten
`Wicklung auf das Kuhlfluid ist dadurch direkter und intensiver als bei den vorbekannten Warmetauschern, bei
`denen sich die Wande des Kuhlelements zwischen den Wicklungen und dem Kthlmedium befinden. Die direkte
`Durchstr6mung der Spule ermdglicht auBerdem eine gleichmaBigere KUhlung, weil die Fluidstr6mung alle
`Spulenbereiche oder zumindest einen sehr groBen Teil davon erreichen kann.
`
`Die erfindungsgemaBe Kihltechnik hat auBerdem den Vorteil, dass als Kuhlfluid nicht nur Flussigkeiten, sondern
`auch Gase, insbesondere die Umgebungsluft, eingesetzt werden kénnen. Letzteres ist besonders kostengunstig
`und erméglicht eine sehr einfache und effektive Kuhleinrichtung.
`
`Die beanspruchte Kuhleinrichtung hat ferner den Vorteil eines einfachen Aufbaus und einer einfachen
`Handhabung. Auch der Platzbedarf ist sehr gering. Besonders bei einer Luftkuhlung kénnen aufwandige
`Zusatzaggregate entfallen. Es genugen einfache Geblase oder andere Luftumwalzeinrichtungen. Die
`beanspruchte Kuhleinrichtung ist auBerdem besonders wirtschaftlich und kostengunstig. Dies gilt nicht nur fur die
`Anschaffung, sondern auch fur den Betrieb der Kuhleinrichtung und die Unterhaltskosten.
`
`Die Kuhleinrichtung arbeitet durch die gleichmaBige und intensive Kuhlwirkung besonders schnell und effektiv.
`Hierbei ist es auBerdem mdglich, zusatzlich zur Spule und deren Wicklungen auch den Spannkegel oder eine
`andere von der induktiven Behandlungseinrichtung beaufschlagte Aufnahme oder dergl. mit zu kuhlen. Die hohe
`Kuhlwirkung erméglicht kurze Taktzeiten. Die Spulenkuhlung kann wahrend des Spulenbetriebs und/oder in den
`Betriebspausen statt finden.
`
`Die Kuhleinrichtung kann mit unterschiedlichen Kuhlfluiden, insbesondere Luft, alternativ aber auch mit
`Flussigkeiten, z.B. elektrisch isolierenden Olen oderdergl. arbeiten. In den Unteranspriichen sind hierzu
`verschiedene Ausgestaltungsmoglichkeiten fur die Kuhleinrichtung angegeben. Die Kuhleinrichtung ist fur
`beliebige Spulenformen und Spulenkonstruktionen geeignet. Insbesondere kénnen die nach ein oder mehreren
`Richtungen beabstandeten Wicklungen in beliebig geeigneter Weise ausgebildet sein, z.B. in Platinenform oder in
`Gestalt von Drahtpaketen oder dergl..
`
`In den Unteranspruchen sind weitere vorteilhafte Ausgestaltungen der Erfindung angegeben.
`
`Die Erfindung ist in den Zeichnungen beispielsweise und schematisch dargestellt. Im einzelnen zeigen:
`
`1: eine induktive Spanneinrichtung fur Werkzeuge mit einer elektromagnetischen Spule und einer Kuhleinrichtung
`mit Luftkiihlung,
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`2: eine Variante zur 1 mit einer anderen Kuhleinrichtung,
`
`3 bis 5: verschiedene Varianten fur Ausgestaltungen von Kuthleinrichtungen und Kuhlfluidstr6mungen und
`
`6: eine Behandlungseinrichtung mit einer Kuhleinrichtung fur eine Flussigkeitskuhlung.
`
`Die Erfindung betrifft eine induktive Behandlungseinrichtung (1) mit einer KUhleinrichtung (2). Sie betrifft
`auBerdem ein Verfahren zum Kuhlen von elektromagnetischen Spulen und eine Kuhleinrichtung an sich.
`
`Die induktive Behandlungseinrichtung (1) kann in beliebiger Weise ausgebildet sein und besitzt mindestens eine
`elektromagnetische Spule (5) und eine Kihleinrichtung (2) fiir diese Spule(n) (5). Die induktive
`Behandlungseinrichtung (1) kann in beliebig geeigneter weise ausgebildet sein und zu beliebigen Zwecken dienen.
`In den gezeigten AusfUhrungsbeispielen ist die induktive Behandlungseinrichtung (1) als induktive
`Spanneinrichtung fur Werkzeuge (4) ausgebildet. Alternativ kann die induktive Behandlungseinrichtung (1) eine
`Heizeinrichtung zum Erwarmen von Werksticken oder dergl. sein. Mit der gezeigten Spanneinrichtung (1) wird
`eine Aufnahme (3), z.B. ein metallischer Spannkegel mit einer Aufnahmedffnung fur den Schaft eines Werkzeugs
`(4) durch die von der Spule (5) erzeugten elektromagnetischen Wechselfelder und dadurch induzierte
`Wechselstr6me erwarmt. Durch die Erwarmung weitet sich der Spannkegel (3) und ermdglicht das Einstecken des
`Werkzeugschaftes (4). Nach Abschalten und ggf. Entfernen der Spule (5) kuhit der Spannkegel (3) wieder ab,
`wobei er schrumpft und den eingesteckten Werkzeugschaft (4) im Schrumpf- und Spannsitz festhalt. Der
`Spannkegel (3) kann dann entnommen und an einer Werkzeugmaschine oder dergl. eingesetzt werden. Analog
`lasst sich durch Erwarmung und Weitung des Spannkegels (3) ein Werkzeug (4) auch wieder entnehmen und
`gegen ein anderes Werkzeug (4) tauschen. Die induktive Behandlungseinrichtung (1) kann eine Zustellvorrichtung
`fur die ein- oder mehrfach vorhandene elektromagnetische Spule (5) aufweisen. Die Kihleinrichtung (2) kann mit
`der Spule (5) mitbewegt werden.
`
`Die elektromagnetische Spule (5) kann von beliebiger Bauart sein. In den gezeigten Ausflihrungsbeispielen hat sie
`im wesentlichen eine Ringform und umgibt den im Spuleninnenraum angeordneten Spannkegel (3). Die Spule (5)
`ist mit einer geeigneten Energieversorgung und einer Steuerung versehen und kann ferner an einer Halterung
`verstellbar angeordnet sein, so dass ihre Uber den ortsfest gehaltenen Spannkegel (3) gestiilpt werden kann. Die
`genannten Zusatzeinrichtungenfir die Spule (5) sind aus Ubersichtsgriinden nicht dargestellt.
`
`Die Spule (5) besitzt mehrere Wicklungen (6), die in beliebig geeigneter Weise ausgebildet sein k6nnen.
`Beispielsweise kann es sich um Wicklungsplatinen handeln. Alternativ sind Drahtpakete oder Wicklungspakete
`méglich. Die Wicklungen (6) sind mit einem gegenseitigen Abstand (7) zur Bildung von Freiraumen zwischen den
`Wicklungen (6) angeordnet. Die Abstande oder Freiradume (7) k6nnen nach ein oder mehreren Richtungen
`bestehen. Z.B. kinnen scheibenférmige Wicklungslagen mit Abstand Ubereinander angeordnet sein, wodurch sich
`ebenfalls scheibenférmige Freiraume ergeben. Alternativ oder zusatzlich k6nnen die Wicklungen (6) der Ringspule
`radial beabstandet sein. Die Anordnung und Ausbildung der Freiraume (7) kann beliebig und insbesondere
`mehrachsig sein. Die Wicklungen (6) sind hierbei in geeigneter Weise untereinander elektrisch leitend verbunden.
`
`Die Kiihleinrichtung (2) weist eine Umwadlzeinrichtung (17) fur ein Kuhlfluid (15) auf, welches von der
`Umwélzeinrichtung (17) durch die Freiraume (7) in geeigneter Weise bewegt wird und mit den Wicklungen (6) in
`einen direkten Beruhrungskontakttritt. Hierdurch findet ein direkter WarmeUbergang von denen im Spulenbetrieb
`sich erwarmenden Wicklungen (6) auf das Kuhlfluid (15) statt. Durch die Erzeugung einer Fluidstr6mung (16) ist
`der Warmetbergang besondersintensiv und die Kuhlwirkung entsprechend effektiv.
`
`Die Kihleinrichtung (2), die Umwalzeinrichtung (17) und das eingesetzte Kuhifluid (15) k6nnen unterschiedlich
`ausgebildet sein. In den AusfUhrungsbeispielen sind hierflr verschiedene Varianten angegeben.
`
`In den AusfUhrungsformen von 1 bis 6 wird als Kuhifluid (15) ein Gas, insoesondere die Umgebungsluft der
`Behandlungseinrichtung (1) eingesetzt. In der Variante von 6 kommtein fllissiges KUhlfluid (15) zum Einsatz. Die
`Kuhlfluide (15), insbesondere die Kihlflussigkeit k6nnen elektrisch isolierende Eigenschaften haben. Diesist
`glinstig, wenn die stromfUhrenden Wicklungen (6) offen liegen.
`
`https:/Avww.patdocs.com/User/search/fulltext.php?id=DE-202006009799-U1
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`11/18
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`12/17/24, 3:02 PM
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`PatDocs- Full Text
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`1 zeigt eine Variante, in der die Spule (5) von einem Gehduse (8) zumindest bereichsweise umgeben ist. Das
`Gehause(8) kann eine im wesentlichen zylindrische Form haben und an den Stirnwanden(10) Offnungen fur den
`Durchlass des Spannkegels (3) und des Werkzeugs (4) aufweisen. Bei der gezeigten Ausflihrungsform ist die
`Spule (5) in Radialrichtung gegeniiber dem Spannkegel (3) distanziert. Ein elektrischer Kontakt wird durch den
`Abstand vermieden. Alternativ kann das Gehduse (8) an der Innenseite eine zylindrische oder kegelférmige
`Innenwand (nicht dargestellt) aufweisen, welche die Spule (5) vom Spannkegel (3) trennt. Hierdurch erhalt das
`Gehduse(8) eine Ringkanalform. Die besagte Innenwand kann fir das Kihlfluid (15) durchlassig oder
`undurchlassig sein. Eine ahnliche Variante in der Gehausegestaltung ist auch bei 2 méglich.
`
`In der Variante von 1 besteht die Umwalzeinrichtung (17) aus zwei oder mehr Gebladsen (18, 19), die in
`Umfangsrichtung versetzt zueinander angeordnet sind und z.B. bezuglich der Kegel- und Spulenachse einander
`diametral gegentberliegen. Die Geblase (18, 19) k6nnen in beliebig geeigneter Weise ausgebildet und auBenseitig
`an der Seitenwandung (9) des Gehduses (8) angeordnet sein. Das eine Geblase (18) saugt Umgebungsluft an und
`druckt diese durch ein oder mehrere Gehdusedffnungen (11) in der Seitenwand (9) in den Gehauseinnenraum und
`durch die beabstandeten Wicklungen (6). Das z.B. diametral gegenUberliegende zweite Geblase (19) unterstitzt
`die im Gehduseinnenraum erzeugte und durch die Freiraume (7) gerichtete Fluidstr6mung (16), in dem es die
`Kuhlluft (15) aus dem Gehduse (8) absaugt und in die Umgebung ausblast. In der Variante von 1 wird eine im
`wesentlichen quer zur Kegel- und Spulenachse gerichtete Fluidstr6mung (16) erzeugt. Die Fluidstr6mung (16)
`kann je nach Wicklungsausbildung mehrlagig sein. In 1 sind die Wicklungen (6) lagenweise in Soulenachsrichtung
`mit Abstand Ubereinander angeordnet, wodurch quer zur Spulenachsegerichtete Freiraume (7) gebildet werden.
`
`2 zeigt eine Variante mit einer um 90° umgelenkten Fluidstr6mung (16) und einer anderen Umwalzeinrich