EP2477772A1 - Mandrin à pinces - Google Patents

Mandrin à pinces

Info

Publication number
EP2477772A1
EP2477772A1 EP10768384A EP10768384A EP2477772A1 EP 2477772 A1 EP2477772 A1 EP 2477772A1 EP 10768384 A EP10768384 A EP 10768384A EP 10768384 A EP10768384 A EP 10768384A EP 2477772 A1 EP2477772 A1 EP 2477772A1
Authority
EP
European Patent Office
Prior art keywords
collet
chuck
chuck body
collet chuck
conical sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10768384A
Other languages
German (de)
English (en)
Inventor
Hans-Dieter Mack
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.)
Roehm GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
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 Roehm GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Publication of EP2477772A1 publication Critical patent/EP2477772A1/fr
Withdrawn legal-status Critical Current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
    • B23B31/10—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
    • 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
    • Y10T279/17—Socket type
    • Y10T279/17411—Spring biased jaws
    • Y10T279/17529—Fixed cam and moving jaws
    • Y10T279/17538—Threaded-sleeve actuator

Definitions

  • the invention relates to a collet chuck with a rotatably connected to a drive spindle or connectable chuck body, with a collet and a chuck sleeve associated with the conical sleeve.
  • a collet chuck is known from EP 2 008 748 A2, in which the collet in the conical sleeve and this is received in the chuck body in that a clamping nut is screwed onto an external thread on the chuck body, so that a first tightening by
  • Tightening the clamping nut can be done, which is rotatable relative to the collet. A further tensioning then takes place in that the conical sleeve is displaced in the axial direction by a hydraulic tensioning system formed in the chuck body.
  • This collet chuck has a complex structure with many required for the hydraulic adjustment components, so that the result is the production and assembly is relatively complex.
  • the invention has the object of providing a collet chuck of the type mentioned in such a way that with little effort always a sufficient clamping force is provided.
  • This object is achieved according to the invention in a collet chuck of the type mentioned above in that the conical sleeve arranged axially immovable on the chuck body and a threaded connection between the chuck body and the collet is effective.
  • the inventor has recognized that for the secure clamping of a
  • the collet receiving cone sleeve is rotatably mounted on the chuck body, so at a rotation of the collet by frictional forces and the
  • Conical sleeve can be taken without the conical sleeve affected by acting over the chuck body friction forces the Nachspann bin.
  • Chuck body is formed a threaded receptacle into which the collet with a threaded pliers collar is screwed, as in elegant manner with a small footprint the threaded connection between the directly involved components, namely chuck body and collet, can be formed.
  • the chuck body with an external thread in one
  • Body shot of the collet is screwed, in which it is particularly appropriate that the chuck body integral with the
  • the cone sleeve is formed integrally with the chuck body and is received by the collet, so the collet in the sense of
  • At the conical sleeve at least one
  • Key surface is formed so as to be able to ensure with the help of a tool always opening the collet chuck.
  • a secure connection of the conical sleeve relative to the chuck body can be achieved in which the axially rearward end of the conical sleeve means set a securing part on the chuck body, preferably received in a arranged on the chuck body union nut.
  • collet is rotatably and axially immovably connected to a clamping nut, which in an am
  • the clamping nut is provided to realize the threaded connection between the chuck body and the collet, which is rotatably and axially immovably connected to the clamping nut, so that the required movement of the collet can be effected by an external thread of the chuck body.
  • the clamping nut is therefore particularly well accessible to the user and can thus be easily grasped by the user, for which purpose the surface of the clamping nut expediently has a friction-increasing shape.
  • structures, preferably key surfaces or bores for an auxiliary tool which can be attached in a simple manner, can also be formed on the clamping nut.
  • the rotationally fixed coupling of the clamping nut with the collet is achieved by the clamping nut is coupled via at least one, preferably two diametrically opposite pins with the collet.
  • the conical sleeve is arranged axially immovable relative to the chuck body, for the implementation of this requirement, it is advantageous if the conical sleeve on an axial thrust bearing on
  • Circlip is secured.
  • the support via an axial thrust bearing axially to the rear ensures that sufficiently large clamping forces are achieved, even if the collet on the cone sleeve transmits axially rearward acting forces during the clamping process on the chuck body.
  • it is sufficient if axially exerted by the clamping nut forces acting backwards on the collet and thus the collet axially rearwardly relative to the tapered sleeve is adjusted.
  • the clamping nut has a first sleeve portion as a carrier of the thread of the threaded connection and a second
  • Clamping segments of the collet rubber ribs are arranged, however, counteract the achievement of a high clamping force. In the context of the invention, it is therefore intended that between the clamping segments of the collet limited to the axially front region
  • Elastomer ribs are arranged. These elastomeric ribs seal the collet chuck in the direction of the workpiece to be machined and are still sufficient to provide uniformity
  • Fig. 5 is a perspective view of a second
  • FIG. 8 shows the section VIII-VIII of FIG. 6
  • Fig. 1 1 is a plan view of the embodiment of Figure 10,
  • Fig. 14 is a longitudinal section through a further embodiment of the
  • Fig. 15 is a longitudinal section through yet another
  • collet chuck 1 In the drawing, 1 to 15 collet chuck 1 are shown in the figures, which have in common that they have a rotatably connected to a drive spindle 2 or connectable chuck body 3, a collet chuck 4 and a chuck body 3 associated with the conical sleeve 5.
  • the conical sleeve 5 itself is arranged axially immovable on the chuck body 3. Furthermore, between the chuck body 3 and the
  • Collet 4 a threaded connection 6 effective, so that in the
  • a basic tension is achieved by turning the chuck body 3.
  • a collet chuck 1 act on the tool braking torques, one of the direction of rotation of the drive spindle. 2
  • Collet 4 results. This axial displacement of the collet 4 is due to the investment of the clamping segments of the collet 4 to the conical surface of the conical sleeve 5 is converted into a post-tension, so that in the collet chucks 1 according to the invention in all
  • Embodiments a Nachspann bin is realized.
  • the conical sleeve 5 is conically shaped on its inner side and the collet 4 received in the conical sleeve 5, while the figure 15 a
  • Embodiment shows, in which the conical sleeve 5 integral with the
  • Chuck body 3 is formed and received by the collet 4.
  • the tapered sleeve 5 rotatably connected to the collet 4, namely in the embodiment according to the Figures 1 to 4 by a radially the
  • Clamping screw 14 which is also used in the other embodiments or can be used.
  • a threaded receptacle 7 is formed in the chuck body 3 into which the collet chuck 4 is screwed with a pliers collar 9 having a thread 8.
  • Figure 14 shows an alternative
  • Embodiment that also the principal kinematic reversal can be realized in which the chuck body 3, the external thread and the collet 4, the internal thread is assigned, so the chuck body 3 is screwed with an external thread in a body receiving the collet 4 for the realization of the threaded connection 6 between the Chuck body 3 and the collet 4.
  • FIGS. 5 to 13 Two further embodiments are shown in FIGS. 5 to 13, which differ essentially from one another in that on the one hand the drive spindle 2 is detachable with respect to the chuck body, while in the other embodiment an integral realization is selected.
  • the collet 4 is rotatably and axially immovably connected to a clamping nut 12, which in an am
  • clamping thread 13 for the realization of the threaded connection 6 engages, wherein the clamping nut 12 a first sleeve portion as a support of the thread 8 of
  • Threaded connection 6 and a second sleeve section smaller
  • Mit Spotifysteg 20 which engages in an annular groove of the collet 4.
  • the surface of the clamping nut 12 has a friction-increasing shape, namely a flange.
  • 12 structures, namely key surfaces 10 or holes 17 are formed for an auxiliary tool on the clamping nut, these measures serve to be able to transmit a sufficiently large torque to the clamping nut 12 in order to ensure a safe opening of the collet chuck 1.
  • clamping nut 12 is coupled via two diametrically opposite pins 14 with the collet 4 and an axial support of the conical sleeve 5 on the chuck body by an axial thrust bearing 15 to the rear, while forward a locking ring 16th the axial fuse is used. It should also be noted that between the clamping segments of
  • Collet 4 limited to the axially front portion elastomeric ribs 19 are arranged, which allow a seal of the collet chuck 1 with an improved alignment of the clamping segments against each other, without disproportionately countering a secure clamping.
  • a channel 18 can be realized for suction or blown air or for axial tool stops.

Landscapes

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

Abstract

L'invention concerne un mandrin à pinces (1) doté d'un corps de mandrin (3) relié ou pouvant être relié solidaire en rotation à une broche d'entraînement (2), d'une pince de serrage (4) ainsi que d'un manchon conique (5) associé au corps de mandrin (3). Le manchon conique (5) est disposé de manière axialement non translatable sur le corps de mandrin (3) et un assemblage fileté (6) est actif entre le corps de mandrin (3) et la pince de serrage (4).
EP10768384A 2009-09-18 2010-09-06 Mandrin à pinces Withdrawn EP2477772A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009044049A DE102009044049A1 (de) 2009-09-18 2009-09-18 Spannzangenfutter
PCT/DE2010/075084 WO2011032552A1 (fr) 2009-09-18 2010-09-06 Mandrin à pinces

Publications (1)

Publication Number Publication Date
EP2477772A1 true EP2477772A1 (fr) 2012-07-25

Family

ID=43085700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10768384A Withdrawn EP2477772A1 (fr) 2009-09-18 2010-09-06 Mandrin à pinces

Country Status (8)

Country Link
US (1) US20120169017A1 (fr)
EP (1) EP2477772A1 (fr)
JP (1) JP2013505142A (fr)
CN (1) CN102655969A (fr)
CA (1) CA2773222A1 (fr)
DE (1) DE102009044049A1 (fr)
RU (1) RU2012115451A (fr)
WO (1) WO2011032552A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140119846A1 (en) * 2012-10-26 2014-05-01 Bruce O. Larsson Wrench-based tap and die holders
CN103308238B (zh) * 2013-06-21 2015-10-07 吉林大学 可控扭矩事故车辆制动力检测装置
CN103707107B (zh) * 2014-01-06 2016-05-25 东莞市科隆实业有限公司 一种超高精度刀柄
CN105234693A (zh) * 2015-10-18 2016-01-13 常州纳捷机电科技有限公司 高效防脱落装夹头
CN106217086B (zh) * 2016-09-14 2018-08-07 何世华 一种用于加工发动机叶片的辅助装置
CN107214405A (zh) * 2017-05-22 2017-09-29 彭州市长庆全成技术开发有限公司 一种端塞夹头
DE102018111127A1 (de) * 2018-05-09 2019-11-14 Franz Haimer Maschinenbau Kg Schrumpfspannadapter für ein Spannzangenfutter
US10946455B2 (en) * 2018-08-03 2021-03-16 Milwaukee Electric Tool Corporation Keyless chuck assembly
KR102598801B1 (ko) * 2022-01-03 2023-11-07 강문식 워크 서포터

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1250532A (en) * 1916-04-20 1917-12-18 Carl F Ulrich Expanding chuck.
US2228337A (en) * 1939-06-02 1941-01-14 Benco Mfg Company Locking means for collets
CH263720A (de) * 1946-05-04 1949-09-15 Baumann Gottfried Einspannzange für spanabhebende Bearbeitungsmaschinen.
CH280580A (fr) * 1949-07-02 1952-01-31 Schaublin Sa Dispositif de serrage pour pince fendue d'une machine-outil.
US2778650A (en) * 1954-03-11 1957-01-22 Erickson Tool Co Collet chuck
DE1954720U (de) * 1962-03-14 1967-02-02 Fiege & Seitz Praez S Werkzeug Spannfutter fuer spanabhebende werkzeuge.
US3583714A (en) * 1968-11-27 1971-06-08 Gleason Works Chuck and collet for shank pinions and the like
DE1955512A1 (de) * 1969-11-04 1971-05-27 Stieber & Nebelmeier Fa Spannfutter fuer einen zylindrischen Schaft aufweisende Schaftfraeser
DE3622582A1 (de) * 1986-05-27 1987-12-03 Rego Fix Ag Spannmutter zur halterung einer auswechselbaren spannzange
US5316324A (en) * 1992-12-28 1994-05-31 Hufe Jr Warren E Collet-and-shank assembly
DE10056729B4 (de) * 2000-11-15 2007-10-04 Josef Albrecht Bohrfutterfabrik Gmbh & Co. Axial-Spannfutter
SE524557C2 (sv) * 2002-03-21 2004-08-24 Sandvik Ab Roterande verktyg samt skärdel med flexibla organ fasthållningsorgan samt medbringare
DE202004010714U1 (de) * 2004-07-08 2004-09-16 Eugen Fahrion Gmbh & Co. Spannzangenfutter
US7331585B2 (en) * 2004-12-22 2008-02-19 Lintech Machining adapter having a collet and positive axial stop
US7261302B2 (en) * 2005-03-03 2007-08-28 Kennametal Inc. Collet and lock nut assembly
IL174722A0 (en) * 2006-04-02 2006-08-20 Hanoch Guy Chuck and article
DE102007030859A1 (de) 2007-06-25 2009-01-02 Eugen Fahrion Gmbh & Co. Spannzangenfutter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011032552A1 *

Also Published As

Publication number Publication date
CA2773222A1 (fr) 2011-03-24
US20120169017A1 (en) 2012-07-05
JP2013505142A (ja) 2013-02-14
RU2012115451A (ru) 2013-10-27
WO2011032552A1 (fr) 2011-03-24
CN102655969A (zh) 2012-09-05
DE102009044049A1 (de) 2011-03-24

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