EP1050350A1 - Universaler Adapter für Stanzwerkzeughalter für eine Stanzmaschine - Google Patents
Universaler Adapter für Stanzwerkzeughalter für eine Stanzmaschine Download PDFInfo
- Publication number
- EP1050350A1 EP1050350A1 EP00109068A EP00109068A EP1050350A1 EP 1050350 A1 EP1050350 A1 EP 1050350A1 EP 00109068 A EP00109068 A EP 00109068A EP 00109068 A EP00109068 A EP 00109068A EP 1050350 A1 EP1050350 A1 EP 1050350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- adaptor according
- punches
- punch holder
- hammer
- 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- Withdrawn
Links
- 238000004080 punching Methods 0.000 title claims abstract description 26
- 239000007787 solid Substances 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 16
- 230000014759 maintenance of location Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
- B21D45/006—Stripping-off devices
Definitions
- the present invention relates to a universal punch holder adaptor for punching machines.
- Another drawback of conventional punching machines consists in that during the punching step the punch holder, regardless of its type, is unable to reach the level at which the sheet metal to be worked lies. This is because the elements that physically retain the punch, especially of the Trumpf type, in the punch holder, have a considerable bulk thus preventing achievement of such a configuration by interposing themselves in the clearance between the lower face of the punch holder and the sheet metal.
- the aim of the present invention is to solve the above problems of the prior art by providing a universal adaptor for punching machines which allows to rapidly replace, on a single machine, the punches to be used, without having to resort to the purchase of a plurality of punching machines, and which also allows to perform multiple punching operations without warping the sheet metal being worked.
- a universal adaptor for punching machines characterized in that it comprises a cylindrical seat, which is mounted so as to be rigidly coupled to the lower face of the hammer and inside which a solid punch holder body is rigidly inserted, at least one blind and centered seat for the insertion of the punches being formed in said body, externally actuatable means for the quick retention/release of the punches in said seat and means for extracting the punch from the sheet metal being also provided.
- 1 designates a universal punch holder adaptor for punching machines.
- the adaptor 1 substantially comprises a cylindrical seat 3 which is fitted below the lower face of a hammer 4 and inside which a solid punch holder body 5 is accommodated; said body is rigidly coupled to the hammer 4, and at least one centered and blind seat 6 is formed therein; punches 2 are inserted in each instance in seat 6.
- the adaptor 1 includes means 7 for quickly retaining or, viceversa, releasing the punches 2 in the seat 6; the means 7 are actuatable from the outside by an operator.
- Resilient means 8 which react by compression and act on the punches 2 are inserted in the blind bottom of the seat 6, while a pad 9 for resting on the sheet metal is rigidly coupled to the lower face 5a of the solid body 5; the pad 9 is made of flexible material and is arranged coaxially to the blind seat 6; the pad 9, which is a first possible embodiment of extractor means 10, is crossed axially by a perpendicular opening 9a in order to allow the passage of each punch during the active step of the punching machine.
- Means 11 for the micrometric adjustment of the body 5 in the seat 3 are provided in the adaptor 1, particularly between the cylindrical seat 3 and the solid body 5; such means 11 are described in greater detail hereinafter.
- the extractor means 10 in an alternative embodiment shown in Figure 1, are constituted by a plurality of Belleville spring washers, which are generally designated by the reference numeral 4a, are fitted coaxially to the hammer 4 and rest and react on the upper rim of the cylindrical seat 3.
- the quick release or retention means 7 are constituted by a plate 12 which is fitted so that it can move transversely back and forth in a corresponding seat 13 which has longitudinally larger dimensions, is formed horizontally in the solid body 5 and continues in the cylindrical seat 3.
- the plate 12 can be actuated from the outside thanks to a corresponding actuation means 14 and is provided with a through slot 12a which defines a transverse edge 12b adapted to engage, in the retention configuration which is offset with respect to the punch 2 inserted in the seat 6, with a corresponding perimetric recess 2a usually formed in the punches 2; in the release position, the plate 12 is moved so as to be arranged in coaxial correspondence with the punch 2, allowing to extract it from the seat 6 by gravity.
- the actuation means 14 comprises a button 14a which is transversely movable, in contrast with resilient return means 15, in a corresponding seat 16 formed horizontally on one side of the cylindrical seat 3 and the solid body 5, in alignment with one of the ends of the plate 12.
- Spring means 17 are interposed between the plate 12 and the solid body 5 and are adapted to contrast the sliding thereof and return the slot 12a to its offset configuration with respect to the blind seat 6.
- the means 11 for the micrometric adjustment of the position of the solid body 5 inside the cylindrical seat 3 are constituted by a cylinder 18 which is mounted so that it can rotate transversely in a corresponding through seat 19 which is in turn formed in said seat 3; the cylinder engages a corresponding seat 19a formed in the solid body 5 as an extension of the through seat 19.
- the cylinder 18 has, perimetrically with respect to the proximal end that is directed outwards, a toothed ring 18a for coupling to means 21 for the rotary actuation thereof.
- Such means are constituted by a key 22 which can be actuated manually or automatically and is provided with a tip 22a which has perimetric teeth in order to engage the toothed ring 18a of the cylinder 18.
- the operation of the punch holder according to the present invention is as follows: the punches 2, of the Trumpf type, of the high-turret type, or of another conventional type, are inserted in each instance in the hollow seat 6 formed in the solid body 5 that is part of the adaptor 1.
- the plate 12 is moved by the operator by acting on the button 14a, so as to vertically align the slot 12a with the seat 6 and allow the selected punch 2 to pass in order to be seated; the punch is engaged by overcoming the action of the spring placed on the blind bottom of the seat 6, which constitutes the resilient means 8.
- the plate 12 is released and the spring means 17 return it to a position in which it is axially offset with respect to the seat 6; in this position, the edge 12b fits under the recess 2a formed in the punch 2, retaining it in the seat 6.
- the operator must then exactly align the axis of the punch 2 with the axis of the hammer 4; this is performed by acting on the key 22, turning the eccentric cylinder 18, which in turn moves the solid body 5 by a few tenths of a millimeter, by reaction and against the walls of the seat 19a, until the two axes coincide perfectly.
- the punching machine is therefore ready to perform punching: the hammer 4 drops and, in the version of the adaptor 1 shown in Figure 1, moves not only the solid body 5 but also the cylindrical seat 3 until it is in contact with the sheet metal to be punched.
- the punch 2 continues its stroke for a certain extent by being pushed by the hammer 4, which compresses the Belleville spring washers 4a in order to cover the additional extent and performs the punching action.
- the hammer gradually rises for the stroke for extracting the punch 2 from the hole while, until the stroke has been completed, the cylindrical seat 3 maintains the pressure on the sheet metal, preventing it from warping.
- the hammer then rises completely, pulling the cylindrical seat 3 and resuming the initial position for a subsequent punching operation.
- the punching operation occurs substantially as described above, with the only exception that the cylindrical seat 3 remains fixed during the stroke of the hammer 4 and of the solid body 5, as well as of the punch 2 fitted therein: the resilient pad 9 rests against the sheet metal.
- the punch 2 then passes through the opening 9a formed in the pad during its active stroke and retracts during its return step, while the pad 9 maintains contact with the sheet metal throughout the extraction stroke of the punch 2, preventing any warping of the sheet metal.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9910304A GB2349596A (en) | 1999-05-04 | 1999-05-04 | Universal punch holder adaptor for punching machines |
| GB9910304 | 1999-05-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1050350A1 true EP1050350A1 (de) | 2000-11-08 |
Family
ID=10852784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00109068A Withdrawn EP1050350A1 (de) | 1999-05-04 | 2000-05-02 | Universaler Adapter für Stanzwerkzeughalter für eine Stanzmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1050350A1 (de) |
| GB (1) | GB2349596A (de) |
| TR (1) | TR200001254A3 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7032812B2 (en) * | 2000-05-11 | 2006-04-25 | Euromac S.P.A. | Quick-extraction punch-holder adapter for converting punching machines from a single-punch to a multiple-punch configuration |
| DE202004019977U1 (de) * | 2004-12-27 | 2006-05-04 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Stempelaufnahme |
| CN110238277A (zh) * | 2018-03-09 | 2019-09-17 | 宁波君铭钣金有限公司 | 一种可替换冲头的钣金冲压模具 |
| CN112091088A (zh) * | 2020-07-14 | 2020-12-18 | 苏州华尔普机械有限公司 | 全电快换模具端末机 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871254A (en) * | 1973-04-13 | 1975-03-18 | Jr Lawrence V Whistler | Means for piercing and stripping thick material |
| US4316399A (en) * | 1980-04-04 | 1982-02-23 | Wallis Bernard J | Combined punch retainer and fluid actuated stripper |
| US5329835A (en) * | 1992-10-07 | 1994-07-19 | Wilson Tool International, Inc. | Adjustable length punch set assembly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174648A (en) * | 1978-02-01 | 1979-11-20 | Wallis Bernard J | Punch retainer |
| GB1604825A (en) * | 1978-05-31 | 1981-12-16 | Warner M J | Means for holding punches and similar shanked tools |
| US4377100A (en) * | 1981-02-19 | 1983-03-22 | Wallis Bernard J | Punch retainer |
| US5317894A (en) * | 1993-03-12 | 1994-06-07 | Rockford Products Corporation | Quick change insert system |
| US5752424A (en) * | 1995-06-06 | 1998-05-19 | Wilson Tool International, Inc. | Releasable tool piece punch assembly |
-
1999
- 1999-05-04 GB GB9910304A patent/GB2349596A/en not_active Withdrawn
-
2000
- 2000-05-02 EP EP00109068A patent/EP1050350A1/de not_active Withdrawn
- 2000-05-04 TR TR200001254A patent/TR200001254A3/tr unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871254A (en) * | 1973-04-13 | 1975-03-18 | Jr Lawrence V Whistler | Means for piercing and stripping thick material |
| US4316399A (en) * | 1980-04-04 | 1982-02-23 | Wallis Bernard J | Combined punch retainer and fluid actuated stripper |
| US5329835A (en) * | 1992-10-07 | 1994-07-19 | Wilson Tool International, Inc. | Adjustable length punch set assembly |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7032812B2 (en) * | 2000-05-11 | 2006-04-25 | Euromac S.P.A. | Quick-extraction punch-holder adapter for converting punching machines from a single-punch to a multiple-punch configuration |
| DE202004019977U1 (de) * | 2004-12-27 | 2006-05-04 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Stempelaufnahme |
| CN110238277A (zh) * | 2018-03-09 | 2019-09-17 | 宁波君铭钣金有限公司 | 一种可替换冲头的钣金冲压模具 |
| CN112091088A (zh) * | 2020-07-14 | 2020-12-18 | 苏州华尔普机械有限公司 | 全电快换模具端末机 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9910304D0 (en) | 1999-06-30 |
| TR200001254A2 (tr) | 2000-12-21 |
| GB2349596A (en) | 2000-11-08 |
| TR200001254A3 (tr) | 2000-12-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
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| 17P | Request for examination filed |
Effective date: 20010126 |
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| AKX | Designation fees paid |
Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
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| 17Q | First examination report despatched |
Effective date: 20031118 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20050621 |