EP3496886A1 - Werkzeughalter und spannsystem mit einem derartigen werkzeughalter sowie verfahren zur herstellung einer werkzeugaufnahme für einen solchen werkzeughalter - Google Patents
Werkzeughalter und spannsystem mit einem derartigen werkzeughalter sowie verfahren zur herstellung einer werkzeugaufnahme für einen solchen werkzeughalterInfo
- Publication number
- EP3496886A1 EP3496886A1 EP17758076.8A EP17758076A EP3496886A1 EP 3496886 A1 EP3496886 A1 EP 3496886A1 EP 17758076 A EP17758076 A EP 17758076A EP 3496886 A1 EP3496886 A1 EP 3496886A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- receptacle
- tool holder
- clamping
- blocking element
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 63
- 230000005012 migration Effects 0.000 claims abstract description 10
- 238000013508 migration Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 17
- 238000009760 electrical discharge machining Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 201000002672 Miura type epiphyseal chondrodysplasia Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/005—Cylindrical shanks of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/117—Retention by friction only, e.g. using springs, resilient sleeves, tapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/117—Retention by friction only, e.g. using springs, resilient sleeves, tapers
- B23B31/1179—Retention by friction only, e.g. using springs, resilient sleeves, tapers using heating and cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
- B23B31/201—Characterized by features relating primarily to remote control of the gripping means
- B23B31/2012—Threaded cam actuator
- B23B31/20125—Axially fixed cam, moving jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/24—Chucks characterised by features relating primarily to remote control of the gripping means
- B23B31/30—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck
- B23B31/305—Chucks characterised by features relating primarily to remote control of the gripping means using fluid-pressure means in the chuck the gripping means is a deformable sleeve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/02—Features of shanks of tools not relating to the operation performed by the tool
- B23B2231/026—Grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/02—Features of shanks of tools not relating to the operation performed by the tool
- B23B2231/028—Lugs
Definitions
- Tool holder and clamping system with such a tool holder and method for producing a
- the invention relates to a tool holder for the frictional clamping of tools.
- the invention also relates to a clamping system with such a tool holder and to a method for producing a tool holder for such a tool holder.
- a tool holder with a base body and a deformable receptacle for clamping a tool is known.
- the receptacle has a plurality of locking elements, which are designed to prevent axial migration of the tool for engagement in corresponding counter-elements on the tool and arranged on the receptacle.
- the object of the invention is to provide a tool holder of the type mentioned and a clamping system with such a tool holder, which allow a particularly high concentricity and stable attachment of the clamped tool and at the same time are easy to manufacture.
- the receptacle has two spaced-apart clamping sections, between which the at least one blocking element is arranged.
- the receptacle can also be subdivided into more than two exciting clamping sections, thus holding the tool.
- the blocking element is arranged between two clamping portions of the receptacle. It is essential to the invention that the blocking elements are designed to secure the tool shank against unwanted movement, in particular axial micro-movements and radial movements, the tool shank is clamped by the clamping sections.
- the at least one blocking element can be arranged on a support surface which is offset radially outwards relative to the receptacle. This ensures that the tool to be clamped is frictionally clamped only over the spaced apart clamping portions of the receptacle, whereby a disadvantageous influence of this frictional stress can be prevented by the support surface.
- this support surface can be made particularly simple with the locking elements.
- the support surface may be formed in a circumferential annular groove. Through the annular groove, the receptacle for clamping the tool in an outer clamping portion and an inner clamping portion is separated.
- the outer clamping portion is disposed near an open end of the receptacle, whereas the inner clamping portion is disposed away from the open end of the receptacle.
- the annular groove is dimensioned such that the at least one blocking element is completely formed therein, that does not project into the clamping sections.
- an additional annular groove can be arranged in each case between the blocking element and the two clamping sections of the receptacle.
- these additional circumferential grooves can be offset with respect to the circumferential annular groove with the support surface radially outward.
- These additional annular grooves are thus formed as undercut and also facilitate the production of the recording.
- a particularly preferred embodiment with a support surface which is offset radially outwards relative to the receptacle also has a further advantage over the prior art. If a tool is clamped torque-resistant by frictional engagement, this is usually done by narrowing the receiving opening for the tool.
- a particularly preferred embodiment of the invention solves this problem in that it does not place a blocking element within the clamping surfaces, but between two spaced-apart clamping sections which are separated by a radially outwardly offset support surface, which in turn has the blocking element.
- a blocking element within the clamping surfaces, but between two spaced-apart clamping sections which are separated by a radially outwardly offset support surface, which in turn has the blocking element.
- the tool holder consists of a base body, with a deformable receptacle for clamping a tool and at least one blocking element, which is designed to prevent axial migration of the tool from the tool holder for engagement in a corresponding counter element on the tool and arranged on the receptacle wherein the receptacle has two spaced-apart clamping portions, between which the at least one blocking element is arranged, wherein the at least one blocking element is arranged on a support surface which is offset radially outwards relative to the receptacle and wherein the support surface is not in contact with the Tool shank has.
- radially outwardly offset support surface may also result in a damping effect, which reduces the tendency of the rotary tool to vibrate.
- the at least one locking element on the receptacle is designed as an inwardly projecting projection for engagement in a corresponding recess on the shank of a tool to be clamped, this projection is advantageously formed integrally with the receptacle and, for example by means of a material-removing EDM and / or is produced by means of an electrochemical removal process in a recess of a solid block of material.
- the blocking element provided on the receptacle could, however, also be in the form of a recess and the associated mating element on the tool as a projection.
- the locking element may have a semi-circular or part-circular cross-section for simplified engagement in the associated counter-element. Preferably arises on the entire height of the locking element in the radial direction no investment hiss tool and tool holder, with the exception of the engagement between locking element and locking groove.
- the at least one blocking element may extend in the manner of a female thread at least over a partial circumference of the receptacle on the inside thereof.
- a more uniform over the circumference bracket can be achieved in that on the inside of the receptacle a plurality of in the manner of a female thread extending at least over a partial extent of the recording locking elements, for example, 2, 3 or 4, respectively.
- these are expediently arranged equiangularly in the circumferential direction at the receptacle.
- the receptacle is arranged in a receiving opening of the base body and can be acted upon from the outside with pressurized fluid expansion sleeve, on the inside of which the at least one blocking element is arranged.
- the receptacle can also be a one-piece executed with the parent body shrinkage chuck, a power take-up chuck, a arranged within a chuck Reduzierhülse or arranged within a receiving opening of the body and by a Be clamping element deformable collet, on the inside of which at least one locking element is arranged, or another frictionally exciting system.
- the at least one blocking element can be formed directly on the receptacle.
- the blocking element can also be a e.g. as a ball, locking pin or the like. Be executed separate component, which is attached to the receptacle and projects into the receiving area.
- the receptacle can be made of ceramic, metal or a mixture of both.
- the clamping system comprises a tool holder and a tool, wherein the tool holder includes a base body, a deformable receptacle for clamping a tool and at least one integrally formed with the recording or attached as a separate component blocking element, which prevents the axial migration of the tool from the tool holder engages in a corresponding counter-element on the tool, wherein the receptacle has two spaced-apart clamping portions, between which the at least one blocking element is arranged.
- the receptacle is preferably produced by means of a material-removing process from a metallic solid material by generating a recess, wherein at least one protrusion projecting in the recess in the formation of the recess for forming the integrally formed with the receptacle locking element is omitted, that the receptacle is divided into two clamping sections, between which the at least one blocking element is arranged.
- the blocking element is integrally formed on the receptacle between the two clamping portions of the receptacle.
- EDM electrochemical removal processes
- ECM electrochemical machining
- ECDM electrochemical machining
- Such material-removing processes can be used to produce the complex structures for the formation of inwardly projecting projections which form the blocking elements according to the invention
- machining processes and, in a final machining step material removing spark erosion methods such as EDM ("electrical discharge machining") and / or electrochemical machining methods are used, with which the fine structures for forming the projections are formed in the recess forming the blocking elements
- the recess can also be produced completely by machining processes.
- the receptacle can also be produced from ceramic and / or metal powder by press or laser sintering or other additive methods.
- the locking groove on the tool is formed like a thread, i. the locking groove extends at least partially helically around the shank of the tool.
- both the at least one locking element and the locking groove are indeed formed in the manner of a nut or bolt thread, but have no real thread.
- the slope of the locking groove is ideally larger than the groove width, and a plurality of locking elements can be formed with the same shape on the same axial Higher. This is made possible by the fact that a blocking element seen in both the axial and in the radial direction, only a relatively short extent, whereby in the radial direction no complete thread is formed.
- the at least one blocking element is aligned at an angle between 50 ° and 70 °, preferably 60 ° to a plane transverse to the axis of rotation.
- the tool preferably requires less than a full 360 ° turn for insertion.
- the locking groove By forming the locking groove in the manner of a nut thread in opposite directions to the direction of rotation of the tool on the tool shank, the locking groove unfolds over its entire axial extension blocking action.
- the tool can thus be anywhere where locking element and locking groove engaged both held torque, and secured against extract. In practice, this means for the user the comfortable possibility of length adjustment of his tool.
- the locking groove has a constant depth.
- the beginning of the locking groove deviates from the other course, in which this example is not helical, but is straight or has an increased Nutraume. As a result, the insertion of the tool can be simplified. In this section, the locking groove is only partially able to hold the tool simultaneously torque-resistant and reliable.
- Figure 1 shows a tool holder in the form of a shrink chuck for thermal
- Figure 2 is a detail view of the area A of Figure 1;
- Figure 3 is a perspective sectional view of the area A of Figure 1;
- FIG. 4 shows the tool holder of FIG. 1 in a first assembly stage with a partially inserted tool
- Figure 5 is a detail view of the area B of Figure 4.
- FIG. 6 shows the tool holder of Figure 4 in a second assembly stage with a further inserted tool.
- Figure 7 is a detail view of the area C of Figure 6;
- FIG. 9 shows a detailed view of the region D of FIG. 8.
- FIG. 1 shows a rotatably drivable tool holder 1 shown here as a HSK shrink chuck with a rotationally symmetrical basic body 2 and a receptacle 3 arranged in the main body 2 for clamping the shaft of a rotary tool, not shown here, in longitudinal section.
- the base body 2 has a slightly tapered front part 4 with a receiving opening 5 and a conical rear part 6 for receiving in a work spindle of a machine tool. Between the front part 4 and the conical rear part 6, a gripper groove 7 and a holder 8 for an unillustrated identification means for unambiguous electromagnetic or optical identification of the tool holder 1 is provided on the outside of the main body 2.
- the receptacle 3 for clamping a tool is formed as a cylindrical bore and has an outer clamping portion 3a and an inner clamping portion 3b, which each act as a press fit for a tool shank of a tool. Between the clamping portions 3 a, 3 b, a plurality of locking elements 9 a, 9 b are arranged, which are designed to prevent axial migration of the tool from the tool holder for engagement in corresponding counter-elements on the tool.
- the length of the inner clamping section 3b is at least 1/20, preferably more than 1/10 and particularly preferably more than 1/5 of the length of the outer clamping section 3a.
- FIG. 2 shows a detailed view of the region A of FIG. 1.
- the blocking element 9a as well as the blocking element 9b, not shown, is arranged on a support surface 10 which is offset radially outwards relative to the receptacle 3.
- the support surface 10 is formed by the bottom of an annular groove 11.
- an additional circumferential annular groove 12a and 12b respectively.
- the additional annular grooves 12a, 12b are offset from the circumferential annular groove 11 with the support surface 10 radially outwardly, whereby on both sides of the annular groove 11 an undercut is formed.
- the receptacle 3 may also be formed as a conical bore for clamping a conical shaft of a rotary tool.
- the diameter of the clamping portions 3 a, 3 b of the receptacle 3 is not constant, but from the outer Clamping section 3 a continuously reduced to the inner clamping section 3b.
- the additional circumferential annular grooves 12a, 12b and also the annular groove 11 are offset radially outwards relative to the adjacent regions of the outer clamping section 3a and the inner clamping section 3b, so that an undercut is also achieved.
- the locking elements 9a, 9b are designed as projections protruding inwardly into the receiving opening 5, which extend in the manner of a female thread over a partial circumference of the receptacle and for engagement in corresponding counter-elements are formed on a not shown here cylindrical shank of a tool.
- the blocking elements 9a, 9b have a semicircular cross-section and are arranged equidistant from one another at the same angle along the circumferential direction with other blocking elements (not shown in the sectional view).
- a total of three circumferentially equiangularly spaced projections in the form of female threads as locking elements 9a, 9b are provided which extend in the manner of a three-start internal nut thread with the same pitch angle to the receptacle 3 between the outer clamping portion 3a and the inner clamping portion 3b
- the matching to the locking elements 9a, 9b counter-elements on a tool are respectively formed as locking grooves, which extend in the manner of a three-pronged bolt thread on the outside of the cylinder shaft of a tool starting at the rear end face along the peripheral surface helically.
- the receptacle 3 is expediently produced in accordance with the method according to the invention from a metallic solid material block (for example a solid cylinder) by producing a recess by means of a material-removing spark erosion process (such as EDM or ECDM), the blocking elements 9a, 9b projecting inwards in the cylindrical bore Projections are recessed in the generation of the recess.
- FIG. 4 shows the tool holder 1 of FIG. 1 in a first assembly stage with a partially inserted tool 13.
- the tool 13 is preferably a rotary machining tool such as a cylindrical end mill.
- the tool 13 after insertion into the tool holder 1 must first be rotated so that the locking element 9a on the receptacle 3 engage with the corresponding counter-element 14a on the tool 13.
- the counter element 14a on the tool 13 - corresponding to the blocking element 9a - together with further counter elements as a locking groove in the manner of a three-pronged bolt thread on the outside of the cylinder shank of the tool 13, starting at the rear end face, wendelfömig extending along the peripheral surface educated.
- FIG. 5 shows a detailed view of the region B of FIG. 4.
- the tool 13 is inserted straight up to the additional annular groove 12 a between the annular groove 11 with the support surface 10 and the outer clamping portion 3 a of the receptacle 3.
- This assembly step can take place particularly quickly, since the tool 13 can be inserted axially into the receiving opening 5 in a straight line without a particular angular position relative to the tool holder 1.
- the rear end face of the cylindrical shank of the tool 13 comes into contact with the locking elements 9a, 9b projecting inwardly into the receiving opening 5.
- the tool 13 is to be changed by turning along its longitudinal axis in its angular position to the tool holder 1 until the locking element 13 formed as a locking groove on the tool 13 counter-element 14a together with the other counter-elements in engagement with the locking elements 9a, 9b passes and further, helical insertion of the tool 13 is made possible.
- the tool holder 1 of Figure 4 is shown in a subsequent second assembly stage with a further inserted tool 13, in which the tool 13 abuts both the outer clamping portion 3 a and the inner clamping portion 3b of the receptacle 3.
- the blocking element 9a shown engages in a form-fitting manner in the counter element 14a designed as a blocking groove.
- the other not shown blocking elements distributed over the circumference of the receptacle engage in the corresponding further blocking grooves, so that the tool 13 is helically distributed over the circumference is guided along the receptacle 3.
- the further assembly of the tool 13 finally takes place by means of a combined rotary / sliding movement in the form of a screwing movement.
- the tool holder 1 of Figure 6 is shown in a final assembly stage with a fully inserted tool 13 in half section.
- the counter elements 14a, 14b extend as locking grooves in the manner of a three-pronged bolt thread helically on the outside of the cylindrical shank of the tool 13 starting at the rear end face 15 axially along the peripheral surface.
- the tool 13 rests with the end face 15 on a bottom section 16 of the receiving opening 5.
- a central through hole 17 for the passage of cooling and lubricating fluid through the tool holder 1 to the tool 13 is provided.
- the through hole 17 is designed as a threaded bore into which an axially adjustable stop screw, not shown, can be screwed.
- the tool 13 can be inserted with the shaft end 15 to a defined stop. It is understood that the stop screw is preferably drilled through for the passage of coolant / lubricant.
- FIG. 9 shows a detailed view of the region D of FIG. 8.
- a simple production of the inner portion 3b of the receptacle 3 is achieved in that between the bottom portion 16 and the inner clamping portion 3b of the receptacle 3, a relative to the inner clamping portion 3b radially outwardly offset intermediate portion 18 is provided.
- the receptacle 3 is formed as a one-piece executed with the main body 2 shrink fit.
- the shrink chuck is thermally heated, for example by inductive heating, whereby the inner diameter of the shrink chuck increases.
- a tool 13 is inserted into the shrink chuck, wherein the ratio of the inner diameter of the shrink chuck 13 to the outer diameter of the tool shank is designed such that the tool 13 is held firmly in the shrink chuck during subsequent cooling of the shrink chuck.
- the tool can also be clamped within the shrink chuck via a reducing sleeve.
- the reducing sleeve is formed in a conventional manner as a split sleeve with a plurality of axial slots and a matched to the outer diameter of the tool shaft inner diameter.
- the reducing sleeve has on the receptacle on its inside also inwardly projecting locking elements in the form of helically extending projections for engagement in locking grooves designed as counter elements on the tool shank of a tool between two clamping portions of the recording.
- the Reduzierhülse also contains on its outer side helically extending locking grooves for engagement with locking elements which are integrally formed in the form of inwardly projecting, helically extending projections on the inside of the receptacle of the shrink chuck.
- the tool holder 1 can also be designed as a hydraulic chuck with a Dehnbuchse recording.
- the expansion sleeve can be acted upon from the outside with pressure fluid, so that pressed by the pressure, the expansion sleeve inside and thus the tool 13 is tensioned.
- on the receptacle on the inside of the chuck are also provided inwardly projecting locking elements in the form of helically extending projections for engagement in locking grooves designed as counter elements on the tool shank of a tool between two clamping portions of the receptacle.
- a hydraulic chuck with a reducing sleeve can also be used.
- the tool holder 1 can also be designed as a collet chuck, in which the receptacle is designed as a collet disposed within a receiving opening of the main body and deformable by a clamping element.
- the collet points an outer cone surface for engagement with an inner cone surface of the receiving opening.
- the conical surfaces are coordinated so that the collet can be compressed by axial displacement inwards and thereby clamps the tool shank of a tool.
- the collet has on the receptacle on its inside also inwardly projecting locking elements in the form of helically extending projections for engagement in locking grooves designed as counter elements on the tool shank of a tool between two clamping portions of the recording.
- the axial displacement of the collet is carried out by the clamping element, which is designed here as a screwed onto an external thread at the front end of the base body threaded ring.
- the axial displacement of the collet by an outside, z. B. applied with a hydraulic pressing device applied axial force.
- the tool holder can also be designed as a so-called roller power chuck.
- the base body has at a front part of a provided with longitudinal grooves clamping area as a receptacle for the tool shank of the tool.
- a usually rotatably mounted by means of a needle bearing or other rolling bearing clamping nut is arranged by the rotation of a clamping pressure can be exerted on the deformable clamping area.
- the inwardly projecting locking elements are also formed as a helical extending projections for engagement in locking grooves designed as counter elements on the tool shank of the tool between two clamping portions of the receptacle.
- the blocking elements are arranged on the inside of the deformable clamping region. However, it is also possible to arrange the blocking elements further within the body. In addition, a Reduzierhülse between the deformable clamping area and the tool shank could be arranged.
- WO 2013/098192 AI the content of which is hereby incorporated by reference.
- the invention is not limited to HSK tool holders.
- SK, JIS, BT, ABS, or capto interfaces and the like may be provided in a corresponding manner on the base body.
- the blocking elements need not necessarily be arranged in the deformable region of the receptacle. They can also lie in the non-deformable area or in the area of the base holder.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Details Of Cutting Devices (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016115029.0A DE102016115029A1 (de) | 2016-08-12 | 2016-08-12 | Werkzeughalter und Spannsystem mit einem derartigen Werkzeughalter sowie Verfahren zur Herstellung einer Werkzeugaufnahme für einen solchen Werkzeughalter |
PCT/EP2017/070147 WO2018029235A1 (de) | 2016-08-12 | 2017-08-09 | Werkzeughalter und spannsystem mit einem derartigen werkzeughalter sowie verfahren zur herstellung einer werkzeugaufnahme für einen solchen werkzeughalter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3496886A1 true EP3496886A1 (de) | 2019-06-19 |
Family
ID=59713982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17758076.8A Pending EP3496886A1 (de) | 2016-08-12 | 2017-08-09 | Werkzeughalter und spannsystem mit einem derartigen werkzeughalter sowie verfahren zur herstellung einer werkzeugaufnahme für einen solchen werkzeughalter |
Country Status (6)
Country | Link |
---|---|
US (1) | US11123805B2 (de) |
EP (1) | EP3496886A1 (de) |
JP (1) | JP6857234B2 (de) |
CN (2) | CN109562462A (de) |
DE (1) | DE102016115029A1 (de) |
WO (1) | WO2018029235A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019134596A1 (de) | 2019-12-16 | 2021-06-17 | Kennametal Inc. | Rotations-Schneidwerkzeug sowie Werkzeugbaugruppe |
CN112872515B (zh) * | 2021-01-18 | 2022-03-04 | 北京亦盛精密半导体有限公司 | 一种线切割快速定位方法和装置 |
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DE10114240A1 (de) * | 2001-03-22 | 2003-01-30 | Johne & Co Praez Swerkzeuge Gm | Rotationswerkzeug |
CN2704436Y (zh) * | 2004-06-30 | 2005-06-15 | 漳州升源机械工业有限公司 | 刀具夹持组件 |
DE202011109498U1 (de) | 2011-12-27 | 2012-02-13 | Franz Haimer Maschinenbau Kg | Werkzeughalter und Spannsystem mit einem derartigen Werkzeughalter |
CH699516A1 (de) * | 2008-09-10 | 2010-03-15 | Rego Fix Ag | Spannsystem mit Werkzeugsicherung. |
DE102010006918B4 (de) * | 2010-02-04 | 2021-06-10 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Verbindungssystem zum lösbaren Verbinden zweier Bauteile |
DE102010024793B4 (de) * | 2010-06-23 | 2012-01-12 | Kennametal Inc. | Spannfutter |
DE102013103168B3 (de) * | 2012-12-21 | 2014-04-17 | Franz Haimer Maschinenbau Kg | Werkzeughalter mit eingebauten Kavitäten |
WO2014103031A1 (ja) * | 2012-12-28 | 2014-07-03 | 大昭和精機株式会社 | 工具保持構造 |
DE102013213123C5 (de) * | 2013-07-04 | 2022-08-11 | Schwegler Werkzeugfabrik Gmbh & Co. Kg | Wechselkopfsystem für die Metallbearbeitung |
DE102013110043A1 (de) * | 2013-09-12 | 2015-03-12 | Haimer Gmbh | Spannvorrichtung |
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JP2019531200A (ja) | 2019-10-31 |
US20190168311A1 (en) | 2019-06-06 |
JP6857234B2 (ja) | 2021-04-14 |
US11123805B2 (en) | 2021-09-21 |
CN117123819A (zh) | 2023-11-28 |
WO2018029235A1 (de) | 2018-02-15 |
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