WO2017016650A1 - Dispositif de refroidissement pour le refroidissement d'un mandrin à ajustement fretté - Google Patents

Dispositif de refroidissement pour le refroidissement d'un mandrin à ajustement fretté Download PDF

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Publication number
WO2017016650A1
WO2017016650A1 PCT/EP2016/001249 EP2016001249W WO2017016650A1 WO 2017016650 A1 WO2017016650 A1 WO 2017016650A1 EP 2016001249 W EP2016001249 W EP 2016001249W WO 2017016650 A1 WO2017016650 A1 WO 2017016650A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact elements
cooling
individual
cooling device
radially
Prior art date
Application number
PCT/EP2016/001249
Other languages
German (de)
English (en)
Inventor
Klaus Schüssler
Original Assignee
KARL SCHÜSSLER GmbH & Co. KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KARL SCHÜSSLER GmbH & Co. KG filed Critical KARL SCHÜSSLER GmbH & Co. KG
Publication of WO2017016650A1 publication Critical patent/WO2017016650A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/02—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
    • B23P11/025—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold
    • B23P11/027—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits by using heat or cold for mounting tools in tool holders

Definitions

  • the invention relates to a cooling device for cooling a shrink chuck, which serves to receive a tool or workpiece.
  • the state of the art (eg DE.20 2006 019 670 U1) discloses shrink chucks which serve to receive a tool in a machine tool.
  • the shrink chuck To clamp the tool in the shrink chuck, the shrink chuck must be heated, whereby a tool receiving opening expands so that the tool can be inserted. Subsequently, the shrink chuck is then cooled again, whereby the tool receiving opening narrows again and thereby clamps the tool. To remove the tool from the
  • the invention is therefore based on the object to provide a correspondingly improved cooling device, which serves to cool a SchrumpffUtters. This object is achieved by a cooling device according to the invention according to the main claim.
  • the cooling device according to the invention initially has, in accordance with the prior art, an annular cooling adapter in order to contact the outer contour of the shrinkage filter and thereby conduct heat away from the shrinkage lining by means of heat conduction, whereby the shrinkage lining is cooled.
  • the cooling device according to the invention is now characterized in that the cooling adapter has a plurality of separate contact elements made of a thermally conductive material, which are arranged distributed over the circumference of the cooling adapter and in operation, the outer contour of the shrinkage contact to contact the heat by heat conduction from the shrinkage lining to the contact elements dissipate.
  • the individual contact elements are movably mounted in order to be able to adapt to the outer contour of the shrinkage filter.
  • the individual contact elements are movable in the radial direction, so that the individual contact elements Elements can dodge radially outward to adapt to the outer contour of the respective SchrumpfffUtters.
  • the radial displacement of the individual contact elements thus advantageously allows adaptation to different outer diameters of the shrink chuck.
  • the individual contact elements are preferably also pivotable in order to adapt to the outer contour of the respective shrinkage filter, d. H.
  • the individual contact elements can pivot in a radial plane about a pivot axis, which is aligned at right angles to the radial plane.
  • the individual contact elements can then pivot correspondingly in order to conform to the conical outer contour of the respective shrinkage filter.
  • the individual contact elements can be pivoted about a maximum pivot angle, which is at least 1 °, 2 °, 3 °, 4 °, 5 °, 6 ° or even at least 7 °. The pivoting of the individual contact elements thus advantageously allows adaptation to different cone angles of the outer contour of the shrink chuck.
  • Shrink chucks is suitable because the various contact elements of the respective outer contour of the SchrumpffUtters can adapt flexibly.
  • the cooling device has a tensioning device in order to tension the individual contact elements in the radial direction inwards against the outer contour of the shrinkage filter.
  • the clamping device tion ensures that the individual contact elements are pressed from the outside against the respective outer contour of the SchrumpffUtters.
  • the tensioning device includes a plurality of springs, which press the contact elements in each case in the radial direction inwardly against the outer contour of the shrinking filter.
  • each of the contact elements is assigned in each case at least one spring, which presses the respective contact element radially inwardly against the outer contour of the SchrumpffUtters.
  • at least two springs are associated with each of the contact elements, which are arranged one behind the other along the longitudinal axis of the shrinkage chuck.
  • the springs may be formed as coil springs.
  • the cooling device according to the invention preferably comprises a relaxation device for relaxing the contact between the individual contact elements and the
  • Shrink chuck by the contact elements are moved radially outward.
  • the relaxation device thus moves the contact elements radially outward to introduce or remove the shrinkage chuck.
  • the tensioning device moves the individual contact elements radially inwards so that the contact elements rest as well as possible on the outer contour of the shrinkage filter.
  • the expansion device operates pneumatically, for example by means of Compressed air.
  • the individual contact elements can each be connected to a piston rod which carries a piston which can be pressurized pneumatically in order to pull the respective contact element radially outward.
  • the piston rods each extend substantially radially and carry on their radially outer side a piston which can be acted upon with compressed air.
  • the circumferentially immediately adjacent contact elements each include an air gap to dissipate the heat from the contact elements by convection. Through the air gap between the immediately adjacent contact elements so an air flow can be passed, which heats up when flowing through the air gap and thereby dissipates heat from the contact elements.
  • the air gaps between the immediately adjacent contact elements are each wedge-shaped.
  • the cooling device may comprise a nozzle arrangement for directing a cooling gas flow (eg air flow) on the contact elements in order to remove the heat from the contact elements by convection, as already briefly mentioned above.
  • a cooling gas flow eg air flow
  • this gas stream is passed through the air gaps between the immediately adjacent contact elements to dissipate the heat.
  • the aforementioned Düsena: .Ordnung is preferably formed rin-shaped and coaxial with the annulardeadap ter arranged.
  • the nozzle assembly is disposed above the cooling adapter and gives the cooling gas flow down on the cooling adapter or in the air gaps between see the immediately neigh th contact elements.
  • the nozzle arrangement can have an annular circumferential slot nozzle in order to discharge the cooling gas stream. In this case, the cooling gas flow thus extends over the entire circumference of the nozzle arrangement.
  • the nozzle arrangement distributed over the circumference has a plurality of nozzles, each of which emit a cooling partial flow.
  • the individual contact elements in cross-section transversely to the insertion substantially T-shaped and have a longitudinal leg and a transverse leg.
  • the T-shaped contact elements press with the end of their longitudinal limb, preferably in the radial direction from the outside, onto the outer contour of the shrinkage filter.
  • At the transverse leg of the T-shaped contact elements at least one spiral spring is supported radially on the outside, which presses the respective contact element radially inwards.
  • the individual contact elements are preferably guided by at least one guide pin which extends radially.
  • the individual guide pins for guiding the associated contact elements preferably extend coaxially through the individual coil springs.
  • the transverse limbs of the individual T-shaped contact elements preferably have for carrying out the guide pins each Weil a hole that extends into the longitudinal leg of the respective contact element.
  • the individual guide pins are preferably secured with their ends in the associated T-shaped contact elements.
  • a retaining ring which is arranged coaxially with the annular cooling adapter and the annular nozzle arrangement.
  • the retaining ring has numerous radially extending guide holes, in which the guide pins are radially displaceable.
  • the guide bores in this case preferably form a clearance fit for the guide pins, so that the guide pins are not only radially displaceable, but also in a radial plane about a small pivot angle can be pivoted. This makes sense, so that the individual contact elements can be slightly tilted in order to be able to adapt to the respective cone angle of the outer contour of the shrinking filter.
  • the guide pins preferably each have a head, which rests on the outer lateral surface of the retaining ring and prevents slipping of the guide rods.
  • the range of motion of the T-shaped contact elements is thus preferably limited in the radial direction inwardly when the transverse legs of the immediately adjacent contact elements abut each other and / or when the inner ends of the longitudinal legs of the immediately adjacent contact elements collide.
  • the individual contact elements are made of a material with a very good thermal conductivity, such as copper fer or a copper alloy in order to dissipate the heat as well as possible.
  • the individual contact elements are displaceable in the radial direction and also pivotable in a radial plane.
  • the radial displaceability of the contact elements in this case allows adaptation to different outer diameter of the shrink chuck, while the pivoting of the individual contact elements allows Anpas ⁇ tion to different cone angle of the shrink chuck.
  • the individual contact elements can have a contact surface for contacting the outer contour of the shrinking filter , which can have different shapes.
  • the internal contact surface of the individual contact elements is oriented parallel to the central axis of the annular cooling adapter and extends along the central axis of linear and free of curvature.
  • the contact surface is inclined to the central axis namely in the insertion direction or opposite to the insertion direction.
  • the contact surface of each contact element is curved in the insertion direction A ⁇ .
  • FIG. 1 shows a cross-sectional view through a cooling device according to the invention, an enlarged detail view from FIG. 1A, such as
  • Figure 2 is a longitudinal sectional view through thedeeinrich ⁇ device according to Figures 1A and IB.
  • FIG. 1 show a preferred embodiment of a cooling device according to the invention for cooling a shrinking filter, which serves to receive a tool or workpiece, wherein the shrinkage chuck itself is not shown in the drawings.
  • the cooling device essentially comprises an upper part 1 with a cover 2, a lower part 3 and a connecting part 4, wherein the connecting part 4 is connected by screw connections on the one hand to the upper part 1 and on the other hand to the lower part 3.
  • the lid 2 is screwed by a screw connection on the upper part 1, wherein the cover 2 also covers a ring-shaped annular channel 5, which is connected to a compressed air supply.
  • the lid 2 closes with the upper part 1 an annular circumferential slot 6, which delivers a cooling air stream 7 obliquely un ⁇ th to dissipate heat, as will be detailed erläu- is tert.
  • the cooling air flow 7 is in this case fed from the annular channel 5 and the annular channel 5 is connected to a compressed air supply.
  • the annular cover 2 and the likewise annular upper part 1 are arranged coaxially with an insertion opening 8, wherein the shrinkage chuck to be cooled can be introduced in the direction of the block arrow into the insertion opening 8 of the cooling device, ie parallel to the central axis 9 of the cooling device.
  • two guide bores lying one above the other are arranged in pairs, which run radially and each receive a radially displaceable guide pin 10, 11, 12, 13.
  • the individual guide pins 10-13 each have a pin head 14, 15, 16, 17, which rests in the position shown in Figure 2 radially outward on the outer surface of the annular lower part 3 and prevents the guide pins 10-13 slipping radially inward , It should be noted that the guide holes for the guide pins 10-13 form a clearance, so that the guide pins 10-13 are not only radially displaceable in the guide holes, but are also pivotable about a small pivot angle. This is important because the contact elements 18, 19 are also pivotable, as will be explained in detail.
  • the guide pins 10-13 are each connected in pairs to a contact element 18, 19, wherein the contact elements 18, 19 are made of a thermally conductive material (eg copper) and have the task of transmitting heat Derive heat conduction from the shrink chuck.
  • the contact elements 18, 19 are therefore with their inner contact surface 20, 21 on the outer contour of the shrinkage to be cooled and then make a large-area touch contact ago, which allows good heat dissipation.
  • the contact elements 18, 19 are in this case pressed by coil springs 22, 23, 24, 25 in the radial direction inwards.
  • the coil springs 22-25 are supported, on the one hand, on the inner wall of the annular lower part 3 and, on the other hand, on the radially outer side of the contact elements 18 and 19, respectively. at the coil springs 22-25, the guide pins 10-13 surrounded spirally.
  • the illustrated cooling device has a relaxation device in order to pull the contact elements 18, 19 radially outward.
  • the expansion device for each of the contact elements 18, 19 each have a piston rod 26, 27, which extends in the radial direction and carries at its radially outer end in each case a piston 28 and 29 respectively.
  • the pistons 28, 29 can be acted upon by a compressed air passage 30, 31 on one side with compressed air to the piston rod 26, 27 and thus the associated contact element 18, 19 to press radially outward.
  • a pressurization of the pistons 28, 29 is only required in this case in order to pull the contact elements 18, 19 radially outward. In normal cooling operation, however, no pressurization is required, since then the spiral springs 22-25 press the contact elements 18, 19 radially inwardly against the outer contour of the shrinkage filter.
  • the individual contact elements 18, 19 can therefore perform an evasive movement for adaptation to differently shaped shrink chucks.
  • the guide holes for the guide pins 10-13 each play fits, so that the guide pins 10-13 can also pivot about a small tilt angle in the radial plane. This is important because a play-free Li ⁇ near leadership of the guide pins 10-13 would prevent pivotal movement of the contact elements 18, 19.
  • the immediately adjacent contact elements 18, 33 each have a substantially keilför ⁇ -shaped air gap 32 include through which the cooling air current is conducted 7 to dissipate heat by convection.
  • the heat initially passes from the shrinkage chuck to the contact elements 18, 33.
  • the heat from the contact elements 18, 33 passes through heat conduction to the cooling air flow 7, which is passed through the wedge-shaped air gaps 32. With the cooling air flow 7, the heat then leaves the cooling device by convection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)

Abstract

L'invention concerne un dispositif de refroidissement pour le refroidissement d'un mandrin à ajustement fretté destiné à recevoir un outil ou une pièce, comprenant un adaptateur de refroidissement annulaire pour la mise en contact du contour extérieur du mandrin à ajustement fretté et pour la dissipation de chaleur à partir du mandrin à ajustement fretté par conduction de chaleur. Selon l'invention, l'adaptateur de refroidissement comprend plusieurs éléments de contact (18, 19) séparés constitués d'un matériau thermoconducteur, lesquels sont disposés de manière répartie sur la périphérie de l'adaptateur de refroidissement et sont en contact avec le contour extérieur du mandrin à ajustement fretté lors du fonctionnement, afin de dissiper la chaleur par conduction de chaleur du mandrin à ajustement fretté aux éléments de contact (18, 19). Selon l'invention, les éléments de contact (18, 19) individuels sont en outre déplaçables dans la direction radiale et peuvent pivoter dans le plan radial, afin de s'adapter au diamètre extérieur et à l'angle de cône du mandrin à ajustement fretté respectif.
PCT/EP2016/001249 2015-07-24 2016-07-15 Dispositif de refroidissement pour le refroidissement d'un mandrin à ajustement fretté WO2017016650A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015009611.7A DE102015009611B3 (de) 2015-07-24 2015-07-24 Kühleinrichtung zur Kühlung eines Schrumpffutters
DE102015009611.7 2015-07-24

Publications (1)

Publication Number Publication Date
WO2017016650A1 true WO2017016650A1 (fr) 2017-02-02

Family

ID=56464164

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/001249 WO2017016650A1 (fr) 2015-07-24 2016-07-15 Dispositif de refroidissement pour le refroidissement d'un mandrin à ajustement fretté

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Country Link
DE (1) DE102015009611B3 (fr)
WO (1) WO2017016650A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114473744B (zh) * 2022-02-10 2023-07-04 上海普锐赛司实业有限公司 一种散热翅片表面精加工用设备
DE102022115424A1 (de) * 2022-06-21 2023-12-21 E. Zoller GmbH & Co. KG Einstell- und Messgeräte Schrumpfspannabkühlvorrichtung, Kühlstation und Verfahren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005014992U1 (de) * 2005-01-27 2005-12-15 E. Zoller Gmbh & Co. Kg Vorrichtung zur Befestigung eines Werkzeugs in einem Werkzeugfutter mit einer Kühleinheit
DE102005005892A1 (de) * 2005-02-09 2006-08-10 Haimer Gmbh Induktionsspuleneinheit
DE202006019670U1 (de) 2006-12-19 2007-03-08 Kelch & Links Gmbh Kühladapter für Schrumpffutter
DE202006009890U1 (de) * 2006-06-24 2007-10-31 Lupotron Gmbh Kühlkörper für Schrumpffutter
DE102011082611A1 (de) * 2011-09-13 2013-03-14 Franz Haimer Maschinenbau Kg Induktionsspuleneinheit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005014992U1 (de) * 2005-01-27 2005-12-15 E. Zoller Gmbh & Co. Kg Vorrichtung zur Befestigung eines Werkzeugs in einem Werkzeugfutter mit einer Kühleinheit
DE102005005892A1 (de) * 2005-02-09 2006-08-10 Haimer Gmbh Induktionsspuleneinheit
DE202006009890U1 (de) * 2006-06-24 2007-10-31 Lupotron Gmbh Kühlkörper für Schrumpffutter
DE202006019670U1 (de) 2006-12-19 2007-03-08 Kelch & Links Gmbh Kühladapter für Schrumpffutter
DE102011082611A1 (de) * 2011-09-13 2013-03-14 Franz Haimer Maschinenbau Kg Induktionsspuleneinheit

Also Published As

Publication number Publication date
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