EP3993930A1 - Mandrin de serrage expansible hydrauliquement - Google Patents

Mandrin de serrage expansible hydrauliquement

Info

Publication number
EP3993930A1
EP3993930A1 EP20733273.5A EP20733273A EP3993930A1 EP 3993930 A1 EP3993930 A1 EP 3993930A1 EP 20733273 A EP20733273 A EP 20733273A EP 3993930 A1 EP3993930 A1 EP 3993930A1
Authority
EP
European Patent Office
Prior art keywords
clamping part
hydraulic expansion
expansion chuck
chuck according
shaft part
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
Application number
EP20733273.5A
Other languages
German (de)
English (en)
Inventor
Simon Herzog
Christian Steidle
Andreas Löw
Martin GUTMACHER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guehring KG
Original Assignee
Guehring 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 Guehring KG filed Critical Guehring KG
Publication of EP3993930A1 publication Critical patent/EP3993930A1/fr
Pending legal-status Critical Current

Links

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
    • B23B31/02—Chucks
    • B23B31/028—Chucks the axial positioning of the tool being adjustable
    • 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
    • B23B31/1177—Retention by friction only, e.g. using springs, resilient sleeves, tapers using resilient metallic rings or sleeves
    • B23B31/1178—Retention by friction only, e.g. using springs, resilient sleeves, tapers using resilient metallic rings or sleeves using fluid-pressure means to actuate the gripping means
    • 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
    • B23B2231/04—Adapters
    • 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
    • B23B2231/36—Sealed joints
    • 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
    • B23B2231/36—Sealed joints
    • B23B2231/365—Sealed joints using O-rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/16—Welded connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/124—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/12—Chucks or sockets with fluid-pressure actuator
    • Y10T279/1216—Jaw is expansible chamber; i.e., bladder type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/34—Accessory or component
    • Y10T279/3487—Tool or work stop or locator

Definitions

  • the invention relates to a hydraulic expansion chuck according to the preamble of claim 1.
  • Such a hydraulic expansion chuck is known, for example, from WO 2017/093280 A1 and has a base body which extends along a rotational or longitudinal center axis and which functionally extends into a clamping part (referred to as an expansion bushing in WO 2017/093280 A1) for receiving and clamping a Shank tool and a shank part (referred to as a base body in WO 2017/093280 A1) for direct or indirect coupling of the hydraulic expansion chuck to a module of a modular tool system or to a machine spindle.
  • a clamping part referred to as an expansion bushing in WO 2017/093280 A1
  • a shank part referred to as a base body in WO 2017/093280 A1
  • the clamping part has two fluid pressure pressurizable pressure chambers around a central receiving opening, which are each separated from the receiving opening via an elastically flexible expansion wall and connected via a pressure channel to a pressure generating device arranged in the base body.
  • the expansion walls bulge ge conditions a received in the central receiving opening shaft tool, z. B. drill or milling cutter, in order to frictionally clamp the shaft tool received in the central receiving opening.
  • the shaft part has a receiving sleeve extending towards the clamping part (referred to as clamping part in WO 2017/093280 A1), which accommodates a connecting pin-like length section of the clamping part extending towards the shaft part.
  • the axial position of the clamping part is adjustable by an axial stop provided in the shaft part, which is formed from a sleeve-shaped screw element and a sleeve-shaped elastic support element on which the clamping part is axially supported.
  • the depth of immersion of the clamping part in the shaft part and thus the axial length of the hydraulic expansion chuck is determined by the screwing depth of the screw element in the shaft part, so that when assembling the hydraulic expansion chuck, care must be taken to ensure that the screw element is correctly positioned in the shaft part.
  • the axial position of a shaft tool clamped in the clamping part is in turn adjustable by means of an adjusting screw screwed into the clamping part.
  • the present invention is based on the object of providing a hydraulic expansion chuck composed of a separately manufactured clamping and shaft part, which provides a precise fastening of the clamping part on the shaft part in the radial and axial direction and is therefore easier to manufacture.
  • a hydraulic expansion chuck comprises a base body extending along a rotary or longitudinal center axis, which consists of a shaft part for direct or indirect coupling of the hydraulic expansion chuck to a module of a modular tool system or to a machine spindle and a clamping part attached to the shaft part in a rotationally and axially fixed manner
  • Picking up and clamping a shank tool, e.g. B. drill or milling cutter is composed.
  • the shaft part has a receiving sleeve extending towards the clamping part with a central sleeve opening in which a connecting pin of the clamping part extending towards the shaft part is received.
  • the radial position of the clamping part on the shaft part is therefore set on the connection pin received in the receiving sleeve.
  • the connecting pin can be positively received in the receiving sleeve with a defined radial play.
  • the clamping part according to the invention has a stop which is offset radially from the connecting pin and which strikes axially against the receiving sleeve.
  • the ra dial offset stop ensures an easily achieved, clearly defined axial fixing of the clamping part on the shaft part.
  • an axial support of the clamping part on the shaft part is achieved, which is at a greater radial distance from the rotational or longitudinal center axis of the hydraulic expansion chuck than with the hydraulic expansion chuck discussed at the beginning, which creates a vibration-optimized, stable connection between Clamping part and shaft part is achieved.
  • the stop on the clamping part side and the receiving sleeve are preferably designed in such a way that there is a flat contact of the stop on the receiving sleeve.
  • the stop can, for example, a turned ring or ring segment-shaped, so z. B. have a circular ring, circular segment truncated cone or truncated cone segment-shaped stop surface, which rests precisely against egg ner facing the clamping part on the end face of the receiving sleeve.
  • the stop surface can be a circular ring or a truncated cone surface that borders the connection pin and is continuous or interrupted in the circumferential direction.
  • the mating surface on the receiving sleeve can be designed according to the stop surface on the clamping part.
  • the clamping part can be non-positively and / or cohesively connected to the shaft part, in particular screwed and / or welded.
  • the connecting pin can have a guide section which can be inserted axially in a radially form-fitting manner into a receiving section of the sleeve opening.
  • the connecting pin can have an externally threaded section which can be screwed axially into an internally threaded section of the receiving sleeve.
  • the function of the guide section is to axially guide the connecting pin introduced into the receiving sleeve in the sense of a simple combination of clamping part and shaft part.
  • the guide section and the receiving section can be designed to be cylindrical, preferably circular cylindrical, or (slightly) conically tapered towards the shaft part.
  • the guide section is preferably received with a (closely) defined clearance fit in the receiving section of the sleeve opening.
  • the outer cone and inner cone are dimensioned and tolerated in such a way that the desired axial contact of the clamping part-side contact surface on the shank-part-side stop surface is always guaranteed.
  • the above-mentioned external thread section enables, in addition or as an alternative to the guide section, an axial bracing between the clamping part and the shaft part.
  • the clamping part can be welded to the shaft part in the contact area of the stop on the clamping part side and the receiving sleeve.
  • the receiving sleeve can be positioned opposite a longitudinal section of the shaft part facing away from the clamping part be reduced in diameter.
  • the receiving sleeve can taper conically from the longitudinal section of the shaft part facing away from the clamping part towards the clamping part.
  • the clamping part can connect radially flush with the receiving sleeve.
  • the clamping part of the hydraulic expansion chuck has at least one pressure chamber which can be pressurized with fluid and which can be connected in a manner known per se to a pressure source via a pressure channel and to a ventilation device via a ventilation channel.
  • the pressure source and / or venting device are / is advantageously arranged in the shaft part, as a result of which the radial expansion and thus the weight of the clamping part, which is more prone to vibrations, can be kept low. Furthermore, an imbalance due to an uneven mass distribution can be kept low. Taking this idea into account, the ventilation duct and the pressure duct can furthermore be offset from one another by essentially 180 ° with respect to the rotational or longitudinal center axis.
  • the pressure channel can lead via a joint gap corresponding to an axial play between an end face of the connecting pin facing the shaft part and a base area of the sleeve opening facing the clamping part in the receiving sleeve, the pressure channel preferably being sealed in the area of this joint.
  • This seal can be followed by a pair of ring seals that pin between the end face of the connection facing the shaft part and the base face of the sleeve opening facing the clamping part in the receiving sleeve.
  • one of the ring seals between the end face of the connecting pin facing the shaft part and the base surface of the sleeve opening in the receiving sleeve facing the clamping part and the other ring seal between a lateral surface of the connecting pin and an inner surface of the sleeve opening in the receiving sleeve can be arranged.
  • the ring seals can be designed as ring seals made of copper in the first case mentioned above or made of another suitable material, e.g. B. metal or plastic.
  • the ring seals can be designed as O-rings made of rubber or some other elastic material.
  • the shaft part and / or the clamping part of the hydraulic expansion chuck can be manufactured monolithically, in particular additively. 3D printing processes for additive manufacturing are now established in the field of tool technology and allow simple production of complex hollow structures such as the at least one pressure chamber, the pressure channel or the ventilation channel.
  • the hydraulic expansion chuck can have a central opening axially penetrating the shaft part and the clamping part, via which, for example, a shaft tool clamped in the clamping part can be supplied with a cooling lubricant.
  • the shaft part of the hydraulic expansion chuck preferably has a hollow shaft to which the penetrating central opening adjoins.
  • the hollow shaft is preferably designed as a hollow shaft cone (HSK) known to those skilled in the art, but can, for. B. also be designed as a steep taper (SK) - or Zy cylinder shaft.
  • an axial stop e.g. B. an adjusting screw for a shank tool received in the clamping part be angeord net.
  • the above-mentioned central opening can lead through the axial stop.
  • the axial stop can be adjustable to adjust the depth of the shank tool in the clamping part.
  • Fig. 1 shows a half-section of a hydraulic expansion chuck according to the invention according to a first embodiment along a rotational or longitudinal center axis.
  • Fig. 2 shows a section of the hydraulic expansion chuck according to the invention ge according to the first embodiment transversely to the rotational or longitudinal center axis at a point indicated in Fig. 1 with B - B.
  • FIG. 3 shows a partial section of the hydraulic expansion chuck according to the invention according to the first embodiment along the rotational or longitudinal center axis in a plane indicated by E - E in FIG. 2.
  • FIG. 4 shows a partial section of a hydraulic expansion chuck according to the invention according to a second embodiment along the rotational or longitudinal center axis in a plane indicated by E - E in FIG. 2.
  • 1 to 3 show a first embodiment of a hydraulic expansion chuck according to the invention.
  • the hydraulic expansion chuck comprises a base body 1 extending along a rotary or longitudinal center axis 2.
  • the base body 1 is composed of a shaft part 20 and a clamping part 30 axially attached to the shaft part 20.
  • the shaft part 20 is intended to connect the base body 1 on the side facing away from the clamping part 30 to a module (not shown) of a modular tool system or a (not shown) machine spindle.
  • the shaft part 20 has a hollow shaft 23 on the side facing away from the clamping part 30.
  • the hollow shaft 23 is formed by an HSK shaft known per se to the person skilled in the art.
  • the shaft part 20 On the side facing the clamping part 30, the shaft part 20 has a receiving sleeve 21 with a central sleeve opening, as shown in FIG. 3, which extends along the rotational or longitudinal center axis 2 towards the clamping part 30.
  • Fig. 3 shows that the receiving sleeve 21, i. H.
  • the upperfernnab section of the shaft part slightly tapered towards the clamping part 30 and is consistently smaller in diameter than the lower length portion of the shaft part in Fig. 3.
  • the in Fig. 3 overhead end face of the receiving sleeve 21 forms a Ge counter surface 22 against which a provided on the clamping part 30 stop surface 32 rests axially flush.
  • the mating surface 22 is designed in the shape of a circular ring and lies in a cross-sectional plane of the base body 1.
  • the sleeve opening can be divided axially into an inner receiving section, which in the first embodiment shown has a circular cylindrical design, and an outer internally threaded section 27.
  • the clamping part 30 is provided to take up a (not shown) shank tool such as a drill or milling cutter in a central receiving opening 35 and to clamp it hydraulically.
  • the clamping part 30 has on the side facing the shaft part 20 to a connecting pin 31 extending towards the shaft part 20, which is received in the receiving sleeve 21 with an accurate fit.
  • connection pin 31 has for this purpose a cylindrical guide section corresponding to the sleeve opening, which sits in the receiving section of the sleeve opening in a radially form-fitting manner, as well as a male thread section 37 screwed into the internal thread section 27.
  • the externally threaded section 37 of the clamping part 30 is screwed so deeply into the internally threaded section 27 of the receiving sleeve 21 that the clamping part 30 with an end stop surface 32 facing the shaft part and enclosing the connecting pin 31 strikes against the abovementioned counter surface 22 on the shaft part .
  • the annular stop surface 32 in the first embodiment forms a stop according to the claims, which limits the insertion depth of the clamping part 30 in the shaft part 20 and thus defines the axial position of the clamping part 30 on the shaft part 20 and the overall axial length of the base body 1 or hydraulic expansion chuck.
  • FIG. 3 shows that the clamping part 30 adjoins the receiving sleeve 21 in a radially flush manner and, like the receiving sleeve 21, is slightly tapered.
  • FIG. 3 further shows that the clamping part 30 is also materially connected to the shaft part 20 in the contact area of the clamping part-side stop surface 32 and the shaft part-side counter surface 22 by welding.
  • the connecting pin 31 extends so far into the receiving sleeve 21 that an end face 36 of the connecting pin 31 facing the shaft part 20 has a narrow axial play or a tightly dimensioned joint gap 3 from one of the Clamping part 30 facing base surface 26 of the sleeve opening is spaced apart.
  • FIG. 3 also shows a central opening 33 which axially penetrates the clamping part 30 and shaft part 20. This central opening 33 connects a flea space of the flea shaft 23 with the central receiving opening 35 in the clamping part 30 and is used to supply a shaft tool clamped in the clamping part 30 with a cooling lubricant fluid.
  • the clamping part 30 also has an axial stop formed by an adjusting screw 34. The central opening 33 leads through the adjusting screw 34.
  • the clamping part 30 has two pressure chambers 40 that can be acted upon by fluid pressure around the central receiving opening 35.
  • the two pressure chambers 40 are connected to one another via an eccentric connec tion channel 41.
  • a pressure channel 42 and a venting duct 44 each open into the pressure chamber 40, which is closer to the shaft part 20, these running in the direction of the rotational or longitudinal center axis 2 and eccentrically to the central opening 33 to a pressure source 43 or a venting device 45, which are shown in FIG 2 are shown.
  • the pressure channel 42 and ventilation channel 44 are offset from one another by essentially 180 ° with respect to the rotational or longitudinal center axis 2.
  • the section of the pressure channel 42 arranged in the shaft part 20 is connected to a pressure source 43 arranged in the shaft part 20, and the section of the ventilation channel 44 arranged in the shaft part 20 is connected to a ventilation device 45 arranged in the shaft part 20.
  • the pressure channel 42 and the ventilation channel 44 are at the transition between the end face 36 and the base surface 26, i.e. H. in the area of the joint gap 3, with a pair of ring seals 50 sealed.
  • two copper sealing rings are arranged between the end surface 36 and the base surface 26, which are arranged between the end surface 36 and the base surface 26 around the openings of the pressure channel 42 and ventilation channel 44 and between the two surfaces are pressed.
  • the required pressing pressure is achieved by screwing the clamping part 30 to the shaft part 20.
  • the shaft part 20 and the clamping part 30 in the embodiment shown were first manufactured separately from one another and then joined together.
  • the clamping part 30, which has more complex hollow structures with the two pressure chambers 40, the pressure channel 42, the ventilation channel 44, etc., can, for. B. be manufactured additively by a 3D printing process.
  • the shaft part 20 can also be manufactured additively, but for economic reasons it can also be manufactured in a conventional manner by machining a metal body, since it is here with the essentially linear sections of the pressure channel 42 and ventilation channel 44, the receiving sleeve 21, the Has hollow shaft 23, etc. easier to realize hollow structures.
  • 4 shows a second embodiment of a hydraulic expansion chuck according to the invention, which differs from the first embodiment only in the way in which the pressure and ventilation duct 44 leading over the joint gap 3 is sealed.
  • two O-rings made of rubber are provided as ring seals 50 instead of the copper sealing rings.
  • the clamping part 30 is not screwed to the shaft part 20.
  • the connecting pin 31 is therefore only formed from a guide section, while the sleeve opening of the receiving part is formed only from a receiving section. Therefore, to ensure a rotationally and axially fixed attachment of the shaft part 20 and clamping part 30 is a material connection by z. B. welding, soldering or the like of the contacting mating surface 22 and stop surface 32 is required.
  • the rotationally and axially fixed connection of the shaft part 20 and the clamping part 30 can be made not only by screwing but also by means of axial screwing with the aid of several screws or the like, which are integral with the shaft part 20 or clamping part 30.
  • 40 z. B one, three, four or more pressure chambers 40 may be provided.
  • the axial length of the connecting pin 31 can be essentially the same as the axial depth of the sleeve opening, the end face 36 of the connecting pin 31 thus more or less flush with the base surface 26 of the sleeve opening.
  • a joint gap 3 between the end face 36 of the connecting pin 31 and the base surface 26 of the sleeve opening is therefore not necessarily neces sary as long as the stop on the clamping part side abuts on the receiving sleeve 21 of the shaft part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

L'invention concerne un mandrin de serrage expansible hydrauliquement comportant un corps de base (1) s'étendant le long d'un axe de rotation ou axe central longitudinal (2) et se composant d'une partie tige (20) destinée à l'accouplement direct ou indirect du mandrin de serrage expansible hydrauliquement à un module d'un système d'outil modulaire ou à une broche de machine et une partie de serrage (30) adjointe à la partie tige, de manière fixée axialement et bloquée en rotation, destinée à recevoir et serrer un outil à tige. La partie tige présente une ouverture de réception s'étendant en direction de la partie de serrage et comportant une ouverture de manchon centrale dans laquelle un tourillon de liaison (31) de la partie de serrage s'étendant en direction de la partie tige est reçu par complémentarité de forme. Selon l'invention, la partie de serrage présente une butée décalée dans le sens radial relativement au tourillon de liaison, laquelle bute axialement contre le manchon de réception.
EP20733273.5A 2019-07-02 2020-06-16 Mandrin de serrage expansible hydrauliquement Pending EP3993930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019209684.0A DE102019209684A1 (de) 2019-07-02 2019-07-02 Hydrodehnspannfutter
PCT/EP2020/066555 WO2021001140A1 (fr) 2019-07-02 2020-06-16 Mandrin de serrage expansible hydrauliquement

Publications (1)

Publication Number Publication Date
EP3993930A1 true EP3993930A1 (fr) 2022-05-11

Family

ID=71096719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20733273.5A Pending EP3993930A1 (fr) 2019-07-02 2020-06-16 Mandrin de serrage expansible hydrauliquement

Country Status (4)

Country Link
US (1) US20220152709A1 (fr)
EP (1) EP3993930A1 (fr)
DE (1) DE102019209684A1 (fr)
WO (1) WO2021001140A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022127525A1 (de) * 2022-10-19 2024-04-25 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Dehnspanneinrichtung und Verfahren zur Herstellung einer solchen Dehnspanneinrichtung
DE102022127520A1 (de) * 2022-10-19 2024-04-25 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Dehnspanneinrichtung zum Fixieren eines Bauteils

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721521A1 (de) * 1987-06-30 1989-01-12 Schunk Fritz Gmbh Werkzeug-spannsystem
US6077003A (en) * 1998-06-16 2000-06-20 Hydra-Lock Corporation Tool holder
US20030193148A1 (en) * 1998-08-14 2003-10-16 Michael Haag Clamping chuck, notably expansion chuck
DE202009002899U1 (de) * 2009-03-04 2009-05-14 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spanneinrichtung
JP5753261B2 (ja) * 2011-05-25 2015-07-22 大昭和精機株式会社 ホルダ装置
DE102012215036A1 (de) * 2012-04-13 2013-10-17 Gühring Ohg Hydrodehnspannfutter
US9289831B2 (en) * 2012-12-20 2016-03-22 Kennametal Inc. Expansion chuck
DE102015115180A1 (de) * 2015-09-09 2017-03-09 GDS Präzisionszerspanungs GmbH Spannvorrichtung, insbesondere hydraulische Spannvorrichtung
DE102015117590B3 (de) * 2015-10-15 2017-03-09 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spanneinrichtung zum Fixieren eines Werkzeugs in einer Werkzeugmaschine
DE102015120971A1 (de) * 2015-12-02 2017-06-08 Gühring KG Hydrodehnspannfutter/Hydraulik-Dehnspannfutter

Also Published As

Publication number Publication date
WO2021001140A1 (fr) 2021-01-07
US20220152709A1 (en) 2022-05-19
DE102019209684A1 (de) 2021-01-07

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