WO2001060556A1 - Expansion chuck tool - Google Patents
Expansion chuck tool Download PDFInfo
- Publication number
- WO2001060556A1 WO2001060556A1 PCT/EP2000/010534 EP0010534W WO0160556A1 WO 2001060556 A1 WO2001060556 A1 WO 2001060556A1 EP 0010534 W EP0010534 W EP 0010534W WO 0160556 A1 WO0160556 A1 WO 0160556A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base body
- expansion
- expansion sleeve
- tool
- tool according
- Prior art date
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
- B23B31/24—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
Definitions
- the present invention relates to an expansion clamping tool with a base body which can be fixed to a work spindle of a machine tool and an expansion sleeve which is inserted into or surrounds the base body to form a closed annular space and is soldered to the base body at least at its axial end regions, the annular space being more elastic Deformation of the expansion sleeve can be acted upon by a hydraulic medium in order to achieve a clamping effect.
- Expansion clamping tools of this type are known in different embodiments and are primarily used to fix a tool shank such as a drill or milling shank in the work spindle of a corresponding machine tool.
- the expansion sleeve is usually soldered to the base body at its axial end regions, in order to produce a firm connection to form the closed annular space.
- the problem with this solution is that the connection points are subjected to severe stresses due to the alternating loads during operation, which can lead to the solder joints breaking.
- the base body is a thick-walled component compared to the thin-walled expansion sleeve, so that thermal stresses occur in the cooling phase after high-temperature soldering, which can also result in the solder joint cracking.
- the object of the present invention is to design a clamping tool of the type mentioned at the outset in such a way that a secure connection between the base body and the expansion sleeve is ensured.
- this object is essentially achieved in that the expansion sleeve and the base body unite at least at their connecting spindle-like connection area the components in the radial direction form a form-fitting connection. Due to the positive connection provided according to the invention, the radial forces which occur in the cooling phase during the manufacture of the solder joints and when the annular space between the base body and the expansion sleeve are acted upon are absorbed with the result that the solder connections are not or only to a very small extent by these forces be claimed. Damage to the soldered connections can therefore be reliably avoided.
- the expansion sleeve can also be made significantly thinner at its tool-side end area, as a result of which the oil chamber can be structurally moved further to the tool side. This ensures that the cantilever length is shorter and the arrangement is accordingly stiffer.
- the expansion sleeve and the base body likewise form a positive connection on the connecting region near the working spindle, which fixes the components to one another in the radial direction. Because the expansion sleeve is thus positively integrated into the base body at its two axial end regions, the problems which occur when clamping so-called wistle-notch shafts and which have already been explained above can be significantly reduced, ie the risk of breakages is significantly reduced.
- corresponding engagement means are preferably provided on the mutually facing end faces of the two components, which are designed as groove / projection connections.
- annular groove is provided on the tool-side end face of the base body and at least one web engaging in the annular groove, in particular an annular web, is provided on the expansion sleeve.
- connection at the end region near the work spindle can be produced by an annular groove provided on the base body, into which at least one web, in particular an annular web of the expansion sleeve, engages in a form-fitting manner.
- the annular groove and the web engaging therewith expediently have a rectangular or a triangular cross section. Any other cross-section is also conceivable, as long as a positive connection is made that avoids relative radial movements of the base body and the expansion sleeve relative to one another.
- Figure 1 shows a first embodiment of a stretching tool according to the invention in longitudinal section
- Figure 2 shows a further embodiment of a stretching tool according to the present invention in longitudinal section.
- the expansion chucks 1 each comprise a base body 2 made of a dimensionally stable material, which, in a manner known per se, has a fastening cone for clamping on a rotary driven work spindle of a machine tool on its left-hand end region, which is not shown.
- a connecting shaft 3 is provided with a central axial bore 4, into which an expansion sleeve 5 is inserted.
- the expansion sleeve 5 forms a receptacle 6 into which a cylindrical shank of a tool such as a drill or milling cutter can be inserted.
- annular space 7 is formed between the expansion sleeve 5 and the base body 2, which surrounds the receptacle 6 and is aligned coaxially with the latter.
- the annular space 7, the axial length of which corresponds approximately to the required clamping range, is toward the receptacle 6 from a relatively narrow inner wall 8 of the expansion sleeve 5 and radially outward from the wall of the base body 2, the wall thickness of which is several times greater than the wall thickness of the inner wall 8 is limited.
- the annular space 7 is filled with a hydraulic medium such as oil and is not in shown way via a channel formed in the base body 2 in connection with a hydraulic medium source through which it can be pressurized for clamping a tool.
- the pressure medium source can be formed in a manner known per se from a cylinder space formed in the base body 2, which is closed at the end by a piston-like actuator which can be screwed into the cylinder space to increase the pressure or can be screwed out of the cylinder space to reduce the pressure.
- This hydraulic pressure is transmitted via the channel to the annular space 7 and causes an elastic bulging of the inner wall 8 inwards until it firmly encloses the tool shank inserted in the receptacle 5.
- the expansion sleeve 5 is firmly connected to the base body 2 by being soldered to the base body 2 at its axial end regions in a manner known per se. According to the invention, it is now provided that the expansion sleeve 5 also forms a positive connection with the base body 2 at the connection points.
- an annular groove 9 is provided in the end face of the base body 2 on the tool-side end region, into which a corresponding annular web 10 of the expansion sleeve 5 engages in a form-fitting manner.
- the expansion sleeve 5 has an annular web 11 on its end face on the work spindle, which engages in a corresponding annular groove 12 in the base body 2.
- the form-fitting connections between the base body 2 and the expansion sleeve 5 ensure that radial forces which occur during operation when pressure is applied of the annular space 7 occur and try to separate the two components 2, 5 from each other, do not strain the solder joints.
- the interlocking connections on the tool-side end of the expansion chuck 1 are formed in a corresponding manner by an annular groove 9 of rectangular cross section provided on the base body 2, which comes into engagement with a corresponding annular web 10 on the expansion sleeve 5 , Differences only exist with regard to the positive connection formed on the spindle-side connection area.
- this is formed by an annular groove 12 with a rectangular cross section provided on the base body 2 and a corresponding annular web 11 on the expansion sleeve, while in the embodiment shown in FIG. 2 the annular groove 12 on the base body and the annular web 11 engaged therewith have a triangular cross section.
- the triangular cross section has the advantage that it forms a guide when the expansion sleeve 5 is inserted into the base body 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00993834A EP1185390A1 (en) | 2000-02-16 | 2000-10-26 | Expansion chuck tool |
JP2001559637A JP2003522650A (en) | 2000-02-16 | 2000-10-26 | Inflatable fastening device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10007074.4 | 2000-02-16 | ||
DE2000107074 DE10007074A1 (en) | 2000-02-16 | 2000-02-16 | Expansion tool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001060556A1 true WO2001060556A1 (en) | 2001-08-23 |
Family
ID=7631208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/010534 WO2001060556A1 (en) | 2000-02-16 | 2000-10-26 | Expansion chuck tool |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1185390A1 (en) |
JP (1) | JP2003522650A (en) |
CN (1) | CN1347353A (en) |
DE (1) | DE10007074A1 (en) |
WO (1) | WO2001060556A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009092365A1 (en) * | 2008-01-23 | 2009-07-30 | WTE Präzisionstechnik GmbH | Expanding device and method for the production thereof |
EP2177296A1 (en) | 2008-10-17 | 2010-04-21 | Schunk GmbH & Co. KG Spann- und Greiftechnik | Expansion chucking device |
US20110175300A1 (en) * | 2008-10-02 | 2011-07-21 | Kennametal Inc. | Hydraulic Expansion Chuck |
CN103878404A (en) * | 2012-12-20 | 2014-06-25 | 钴碳化钨硬质合金公司 | Expansion chuck |
WO2014096380A1 (en) * | 2012-12-21 | 2014-06-26 | Franz Haimer Maschinenbau Kg | Pre-loading damping system |
US20150360296A1 (en) * | 2014-06-17 | 2015-12-17 | Kennametal Inc. | Expansion chuck |
WO2017076922A1 (en) * | 2015-11-02 | 2017-05-11 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Hydraulic expanding chuck device |
DE102016008767A1 (en) | 2016-07-22 | 2018-01-25 | Hakki Aygün | expansion chucking |
CN115446030A (en) * | 2022-08-09 | 2022-12-09 | 郭玉娟 | Inside clearance auxiliary assembly of main frame |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE337875T1 (en) * | 2003-11-06 | 2006-09-15 | Schunk Gmbh & Co Kg | INTERMEDIATE BUSHING FOR A CLASP CHUCK AND METHOD FOR THE PRODUCTION THEREOF |
DE202004005321U1 (en) * | 2004-04-03 | 2005-08-11 | Kennametal Inc. | Hydraulic expansion chuck |
CN100385129C (en) * | 2006-01-17 | 2008-04-30 | 江苏江佳机械有限公司 | Expansion type bearing lining |
CN100515625C (en) * | 2006-11-13 | 2009-07-22 | 齐重数控装备股份有限公司 | Backlash eliminating method for spindle sleeve of railway lathe and spindle head stock manufactured by the method |
RU2630076C2 (en) | 2013-04-10 | 2017-09-05 | Дайсова Сейки Кабусики Кайся | Hydraulic chuck |
DE102015117590B3 (en) * | 2015-10-15 | 2017-03-09 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Clamping device for fixing a tool in a machine tool |
DE102015016691B3 (en) * | 2015-12-22 | 2017-05-18 | Technische Universität Chemnitz | Hydraulic expansion chuck |
CN105689749A (en) * | 2016-04-12 | 2016-06-22 | 燕山大学 | High-speed hydraulic chuck with centrifugal compensation function |
EP3610973A1 (en) * | 2018-08-15 | 2020-02-19 | SMW-Autoblok Spannsysteme GmbH | Device for fixing a workpiece to be machined |
CN110900228B (en) * | 2019-12-12 | 2022-02-15 | 四川沛菲克机器人科技有限公司 | Hydraulic expansion clamping device and use method thereof for machining center tool magazine |
CN111390215A (en) * | 2020-05-12 | 2020-07-10 | 济宁捷合机械有限公司 | Hydraulic clamping drill chuck |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5127780A (en) * | 1990-09-20 | 1992-07-07 | Kennametal Inc. | Expandable holding device using a fusible alloy |
US5197720A (en) * | 1989-03-23 | 1993-03-30 | Daimler-Benz Ag | Clamping tool for non-positive and high-precision clamping of workpieces |
DE29603751U1 (en) * | 1996-02-29 | 1996-06-27 | Fritz Schunk GmbH Fabrik für Spann- und Greifwerkzeuge, 74348 Lauffen | Jig |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE743530C (en) * | 1941-02-16 | 1943-12-28 | Hans Hofer | Device for the detachable connection of two parts, in particular mandrel or chuck for machine tools |
DE824726C (en) * | 1949-12-02 | 1951-12-13 | Ringfeder Gmbh | Mandrel |
US6015154A (en) * | 1998-05-28 | 2000-01-18 | Hydra-Lock Corporation | Large displacement hydrostatic workpiece holder |
-
2000
- 2000-02-16 DE DE2000107074 patent/DE10007074A1/en not_active Ceased
- 2000-10-26 JP JP2001559637A patent/JP2003522650A/en active Pending
- 2000-10-26 EP EP00993834A patent/EP1185390A1/en not_active Withdrawn
- 2000-10-26 WO PCT/EP2000/010534 patent/WO2001060556A1/en not_active Application Discontinuation
- 2000-10-26 CN CN 00806315 patent/CN1347353A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5197720A (en) * | 1989-03-23 | 1993-03-30 | Daimler-Benz Ag | Clamping tool for non-positive and high-precision clamping of workpieces |
US5127780A (en) * | 1990-09-20 | 1992-07-07 | Kennametal Inc. | Expandable holding device using a fusible alloy |
DE29603751U1 (en) * | 1996-02-29 | 1996-06-27 | Fritz Schunk GmbH Fabrik für Spann- und Greifwerkzeuge, 74348 Lauffen | Jig |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009092365A1 (en) * | 2008-01-23 | 2009-07-30 | WTE Präzisionstechnik GmbH | Expanding device and method for the production thereof |
US20110175300A1 (en) * | 2008-10-02 | 2011-07-21 | Kennametal Inc. | Hydraulic Expansion Chuck |
US9079254B2 (en) * | 2008-10-02 | 2015-07-14 | Kennametal Inc. | Hydraulic expansion chuck |
US10293413B2 (en) | 2008-10-02 | 2019-05-21 | Kennamental Inc | Hydraulic expansion chuck |
EP2177296A1 (en) | 2008-10-17 | 2010-04-21 | Schunk GmbH & Co. KG Spann- und Greiftechnik | Expansion chucking device |
CN103878404A (en) * | 2012-12-20 | 2014-06-25 | 钴碳化钨硬质合金公司 | Expansion chuck |
US9289831B2 (en) | 2012-12-20 | 2016-03-22 | Kennametal Inc. | Expansion chuck |
DE102013113895B4 (en) | 2012-12-20 | 2024-01-18 | Kennametal Inc. | expansion chuck |
US9889507B2 (en) | 2012-12-21 | 2018-02-13 | Franz Haimer Maschinenbau Kg | Pre-stressing damping system |
WO2014096380A1 (en) * | 2012-12-21 | 2014-06-26 | Franz Haimer Maschinenbau Kg | Pre-loading damping system |
US20150360296A1 (en) * | 2014-06-17 | 2015-12-17 | Kennametal Inc. | Expansion chuck |
US9839964B2 (en) * | 2014-06-17 | 2017-12-12 | Kennametal Inc. | Expansion chuck |
WO2017076922A1 (en) * | 2015-11-02 | 2017-05-11 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Hydraulic expanding chuck device |
DE102016008767A1 (en) | 2016-07-22 | 2018-01-25 | Hakki Aygün | expansion chucking |
CN115446030A (en) * | 2022-08-09 | 2022-12-09 | 郭玉娟 | Inside clearance auxiliary assembly of main frame |
Also Published As
Publication number | Publication date |
---|---|
EP1185390A1 (en) | 2002-03-13 |
JP2003522650A (en) | 2003-07-29 |
CN1347353A (en) | 2002-05-01 |
DE10007074A1 (en) | 2001-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1185390A1 (en) | Expansion chuck tool | |
DE102008050213B4 (en) | Hydraulic chucks | |
EP1529585B1 (en) | Expanding clamping device | |
EP2081716B1 (en) | Collet chuck and clamping device with it | |
WO2005097384A2 (en) | Expansion chucking device | |
DE3039267A1 (en) | CLAMPING DEVICE FOR TOOLS OR WORKPIECES | |
WO1998007538A1 (en) | Expansion clamping chuck | |
EP3349931B1 (en) | Clamping device for fixing a tool in a machine tool and method for manufacturing the clamping device | |
DE4237582A1 (en) | Locking wedge arrangement for two-part, mechanically connected mandrels | |
DE102021116607B3 (en) | Hydraulic expansion device | |
EP2001625A1 (en) | Clamping apparatus for rotating tools or workpieces | |
DE102010006918B4 (en) | Connection system for the detachable connection of two components | |
WO2001039926A1 (en) | Honing tool | |
DE102009049582B3 (en) | Expansion chuck tool, particularly expansion chuck, has carrier, which is fastened to machine and clamping sleeve, which is inserted in carrier and defines receptacle for component to be stretched | |
WO2000071286A1 (en) | Clamping chuck for clamping tools by shrink-fit | |
WO2001057410A1 (en) | Device for connecting two tool parts | |
EP2177296B1 (en) | Expansion chucking device | |
DD297591A5 (en) | DEVICE FOR COUPLING TWO TOOL PARTS OF MACHINE TOOLS | |
DE102016008767A1 (en) | expansion chucking | |
EP1301303A1 (en) | Tool holder for a tool, especially a boring, milling or grinding tool, which can be rotated about a rotational axis | |
DE10353283A1 (en) | Tool holder for a hammer drill | |
DE19926152A1 (en) | Holder for a rotating tool has an end sleeve with pressure chambers around its periphery to give a radial expansion to the holder opening by hydraulic pressure action with an effective function over a long life | |
EP2103369B1 (en) | Expansion chuck | |
DE10147581C1 (en) | Chuck for changeable tool has alignment seat in form of ball bushing and two compression springs in boring | |
DE112017003117B4 (en) | Hydraulic expansion device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 00806315.X Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN IN JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000993834 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2001 559637 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: IN/PCT/2001/00947/DE Country of ref document: IN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 09958801 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2000993834 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000993834 Country of ref document: EP |