EP1622731A1 - Werkzeugaufnahmevorrichtung - Google Patents
WerkzeugaufnahmevorrichtungInfo
- Publication number
- EP1622731A1 EP1622731A1 EP04721424A EP04721424A EP1622731A1 EP 1622731 A1 EP1622731 A1 EP 1622731A1 EP 04721424 A EP04721424 A EP 04721424A EP 04721424 A EP04721424 A EP 04721424A EP 1622731 A1 EP1622731 A1 EP 1622731A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- tool holder
- locking
- guide
- groove
- 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.)
- Granted
Links
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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
- B21D5/0236—Tool clamping
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
Definitions
- the invention relates to a tool holder device as described in the preamble of claim 1.
- a plate molding press with a clamping piece and tools for an adjustable press beam of the molding press are known.
- a locking element which can be brought into engagement with the clamping piece in a locking position and is prestressed by means of a compression spring and is adjustable in the direction perpendicular to the side surface.
- a compression spring In the clamp is in alignment with the
- Locking element is arranged against the action of a compression spring in the direction of the locking element adjustable actuating element with which, when adjusted in the direction of the locking element, the locking element can be disengaged from the terminal strip and the tool can thus be removed from the tool holder.
- the disadvantage here is the one-sided holding torque, as a result of which the tool is not secured against tilting before the clamping process with the clamping piece.
- a press tool with a tool holder for a press brake is also known, wherein a locking element projecting beyond a side surface and adjustable in this direction is arranged in the tool, which engages to secure the tool in a receiving groove of the tool holder and via a Actuating device arranged in the tool is adjusted from the locking position into an unlocking position in which the securing means is out of engagement with the receiving groove.
- Tools equipped in this way require a complex design or larger dimensions and, due to the large number, cause one to be fitted
- the object of the invention is to provide a tool holding device and a bending tool which ensures a safe removal of the bending tool from the tool holding device after releasing a clamping device which fixes the bending tool for a work process.
- the surprising advantage here is that with the restraint device according to the invention a fall protection guaranteed over an entire length of a tool bar is achieved, which prevents the insertion and stringing of tools independently of their length and the position in the tool bar, that is to say an exact matching of the tooling to the intended manufacturing process.
- an embodiment according to claim 4 is also advantageous, as a result of which retention is achieved over an entire length of the tool bar without interruptions.
- the advantageous embodiment described in claim 10 forms an uninterrupted actuation surface for locking elements which are arranged in the tool head and project beyond them on side surfaces.
- An embodiment according to claim 12 is also advantageous, as a result of which the relative adjustability of the locking elements arranged in opposite directions is achieved with simple technical means, and adjustability is provided both on one side and on both sides as required.
- the tool is pre-positioned when the tool bar is equipped.
- the advantageous embodiment characterized in claim 14 ensures universal use of tools in the tool bar, as are available in standard designs.
- Tool in the tool bar is simplified and achieved without auxiliary devices.
- the tool is pre-positioned tension-free in the tool bar.
- Insertion slot of the tool holder with a small oversize, based on the thickness of the tool head, is executable and thus the tool can be inserted into the tool holder with appropriate guidance.
- FIG. 1 shows a tool holder according to the invention with a bending tool cut according to lines I-I in FIG. 2;
- FIG. 3 shows a detailed illustration of the tool holding device according to the invention with the tool clamped in the tool holder according to FIG. 1;
- Figure 4 shows the tool holder device according to the invention with the tool in the removal position, cut.
- FIG. 5 shows the tool holding device according to the invention with the tool in the insertion position, cut
- Fig. 6 shows a further embodiment of the tool holder device according to the invention with the tool, cut.
- FIG. 1 and 2 show a tool holding device 1 with a tool bar 2, which is motionally connected with an adjustable press bar and with a tool 4 detachably held in a groove-shaped tool holder 3. It is an upper one. Bending tool for forming sheet metal parts, eg in a press brake.
- the tool 4 is positioned in the tool holder 3 by means of a clamping device 5 known from the prior art, for example at least one clamping cylinder 6 which can be acted upon by a pressure medium, the clamping cylinder 6 having a clamping bolt 8 which forms an adjustable wedge-shaped clamping surface 7 in a trapezoidal cross section having clamping groove 9 of the tool 4 engages.
- Tool holder 3 struck and this is called head-bearing tool positioning.
- the tool holder device 1 In order to remove the tool 4 from the tool holder 1, it is necessary to move the clamping bolt 8 out of the area of the tool holder 3 by an adjustment path, by releasing the pressure on the clamping cylinder 6 against the clamping direction. In order to prevent the so-called hanging tool 4 from accidentally falling out of the tool holder 3 during such a process, the tool holder device 1 is provided with a retaining device 14.
- the retaining device 14 of the tool holder device 1 is essentially formed by retaining means 15 from T-nuts 17 arranged in a row in the direction of a length 16, which are arranged in guides 18 in one of the legs 19 which laterally delimit the tool holder 3.
- the T-nuts 17 are in the guides 18, which run parallel to each other and at right angles to a central plane 20 of the tool holder 3 and are formed by T-guide grooves 21 - according to the double arrow 22 - slidably mounted and directly lined up. They are formed from a T-guide projection 23 which slidably engages in the T-guide grooves 21 and which is mounted on a belt.
- Gelblock 24 is arranged, which in a locking position in which the tool 4 is to be secured against an automatic fall, a width 25 of the tool holder 3 in the area of an insertion slot 26 for the tool 4 protrudes into the tool holder 3, that is, the locking block 24 one Lateral surface 27 of the receptacle 3 protrudes in the direction of the tool 4 by a protrusion 28.
- the arrangement of the T-nuts 21 is provided in the leg 19 of the tool holder 1 receiving the clamping device 5.
- the T-slot nuts 17 are in the locking position, in which the locking block 24 projects beyond the side surface 27, by means of a spring arrangement 29, in the exemplary embodiment shown, spring tongues 30, of a spring plate fastened to an outer surface 31 of the tool bar 2
- the tool holder 3 delimiting stop surface 35 is formed by a scraper plate 36 arranged in the tool holder 3, which is attached to the leg 19 in the tool holder 3, facing the tool 4 and forming the side surface 27.
- the locking block protruding around the projection 28 in the area of the tool holder 3
- the tool 4 is thus approximately symmetrical to the central plane 20 on the one hand on the supporting surface 37 of the retaining means 15 and on the other hand supported on the support surface 45 of the groove 44 of the tool holder 3 and secured against falling when the clamping device 5 is released.
- a center distance 46, measured in the direction of the length 16, of the T-slot nuts 17 arranged in the guides 18 is equal to or slightly greater than a width 47 of the retaining means 15, for. B. the T-nuts 17, in the area of the locking block 24.
- the retaining means 15 are thus immediately strung together and arranged over the entire length 16.
- the retention device 14 is thus effective for each selected tool length 48 and regardless of the selected position of the tool 4 in the tool holder 3.
- FIG. 3 shows the tool holding device 1 with the tool 4 in a position that is clamped in place for carrying out a work process in the tool holding device 3 by means of the clamping device 5.
- a tool head 50 of the tool 4 has clamping grooves 51 on its opposite tool side surfaces 41, 42 for the engagement of the clamping bolt 8 of the clamping device 5.
- the clamping grooves 51 are arranged symmetrically with respect to the central plane 20, as a result of which the tool 4 can be clamped in the tool holder 3 by a position turned by 180 ° in each case.
- the tool 4 is turned against the receiving base surface 13 and the side surface 10 opposite the clamping bolt 8
- Tool holder 3 clamped and thus positioned in its position for one operation.
- the retaining means 15 is guided in a linear manner in the T-guide groove 21 in the direction of the tool 4 by means of the spring tongue 30 of the spring arrangement 29 and is clamped with the T-guide approximately approach 23 to the stop on the arranged in the tool holder 3 scraper plate 33, which covers the T-guide groove 21 in the direction of the receptacle 3.
- the locking block 24 which projects past the guide projection 23 by at least the projection 28 thus forms the support surface 37.
- the width 25 of the tool holder 3 corresponds to a thickness 52 of the tool 4 or the tool head 50, plus at least once the overhang 28 with which the latching lugs 40 of the opposite locking elements 39 supported on the support surface 37 of the locking block 24 or support surface 45 cover the side of the tool 42 tower.
- this projection 28 corresponds to an intended adjustment path according to - arrow 53 - by which the locking element 39 can be adjusted against the action of the compression spring 43 in the tool head 56.
- the locking element 39 projecting into the groove 45 of the opposite side surface 10 with the locking lug 40 also projects beyond the opposite tool side surface 41 by the projection 28, as a result of which the tool 4 is supported with the locking lug 40 on the support surface 45 of the groove 44.
- the retaining device 14 is effective, with which an unintentional falling out of the tool from the tool holder 3, even when the clamping device 5 is released, is prevented.
- a removal process in order to be able to remove the tool 4 from the tool holder 3 of the tool bar 2 will now be described with reference to the tool holder device 1 shown in FIG. 4.
- the tool 4 is removed horizontally - according to arrow 55 - sideways in Direction of the retaining means 15 offset, whereby the tool side surface 42 against an end surface 56 of the projecting locking block 24 adjusts this against the action of the spring tongue 30 - according to arrow 57 - until the end surface 56 is flush with the surface 54 of the wiper plate 36.
- the tool 4 can be removed from the tool holder 3 - according to arrow 58.
- FIG. 5 now shows an assembly process of the tool holder 1 provided with the securing device 14.
- the tool 4 is inserted with the clamping head 56 into the insertion slot 26 of the tool bar 2.
- the tool side surfaces 41, 42 are overhanged by the locking lugs 40 of the locking elements 39.
- a total width 59 results from the thickness 52 of the tool head 50 and the double overhang 28 with which the detents 40 protrude beyond the tool side surfaces 41, 42 due to the action of the compression spring 43 arranged between the locking elements 39. Since a slot width 60 is variable between a minimum dimension, corresponding to the thickness 52, and a maximum dimension, corresponding to the thickness 51, plus an overhang 28, when the tool holder 3 is imported, angled control surfaces 61 initially come into contact with it which the detents 40 are delimited on the upper side, on opposite edges, which are preferably bevelled, of the locking block 24 on the one hand and of the leg 19 on the other hand, which laterally delimit the insertion slot 26.
- a possible design of a stop and rotation lock 63 for the locking element 39 slidably mounted in the tool head 50 in a guide opening 64, for example a bore 65 is discussed.
- the locking elements 39 are formed by cylindrical pins 66, the end regions projecting beyond the tool side surfaces 41, 42 are designed as the detents 40 with the control surfaces 61.
- a guide groove 67 is arranged in the bore 65 in the direction perpendicular to the central plane 20, in which guide pins 68 of the locking elements 39 protrude and thus secure them against twisting.
- the guide groove 67 is closed, for example, in the region of the tool side surfaces 41, 42, for which there are various technical possibilities and which need not be discussed further.
- FIG. 6 shows a further embodiment of the tool holder device 1 according to the invention, for example on a head-bearing tool 4, the tool head 50 of which is supported on the base 13 on the tool holder 3.
- the tool 4 cannot be turned in the tool holder 3, and therefore, according to this embodiment, one or more adjustable locking elements 39 are provided in the tool head 50 on only one of the tool side surfaces 41, 42.
- a fixed locking lug or locking strip 69 is provided on the opposite tool side surface 42, 41.
- the application in such a design provides for the tool 4 according to the inventive solution to be used in only one position, in which the adjustable locking element (s) 39 are assigned to the retaining means 15 of the retaining device 14 and thus a common adjustment of the locking element 39 and the retaining means 15 for the insertion or removal of the tool 4 is given.
- the locking element 39 is guided, for example, in a blind hole 70 and pretensioned by means of the compression spring 43 and the stop and anti-rotation device 63 is held in position, in which the detent 40 projects beyond the tool side surface 41 by the projection 28.
- the locking lug 40 and the locking strip 69 arranged on the opposite tool side surface 42 and protruding into the groove 44 the tool 4 is held secured against falling even when the clamping device 5 is released. The removal of the tool 4, as well as the insertion, is carried out as already explained in the figures described above.
- the width 25 of the tool holder 3 corresponds at least to the thickness 52 of the tool head 50 plus the protrusion 28 of the locking bar 69, the protrusion 28 of the locking lug 40 and the locking bar 69 preferably being dimensioned the same.
- the exemplary embodiments show possible design variants of the tool holding device 1, it being noted at this point that the invention is not restricted to the specially illustrated design variants of the same, but rather also various combinations of the individual design variants with one another are possible and this variation possibility is based on the teaching of technical action The present invention lies in the ability of the person skilled in the art in this technical field. The scope of protection also includes all conceivable design variants which are possible by combining individual details of the embodiment variant shown and described.
- FIGS. 1, 2, 3, 4, 5; 6 shown embodiments form the subject of independent, inventive solutions.
- the relevant tasks and solutions according to the invention can be found in the detailed descriptions of these figures.
- Tool holder device 36 Scraper plate Tool bar 37 Support surface Tool holder 38 Guide opening Tool 39 Locking element clamping device 40 Locking pin clamping cylinder 41 Tool side surface clamping surface 42 Tool side surface clamping bolt 43 Compression spring clamping groove 44 Groove side surface 45 Support surface stop surface 46 Center distance shoulder 47 Width mounting base surface 48 Tool length restraint device 49 Retaining device 50 tool head slot length 51 52 Thick guide 53 Arrow leg 54 Surface middle plane 55 Arrow T-guide groove 56 Double arrow face 57 Arrow T-guide shoulder 58 Arrow Lock block 59 Overall width Width 60 Slot width insertion slot 61 Control surface side surface 62 Arrow Overhang 63 Stop and rotation lock Spring arrangement 64 Guide opening Spring tongue 65 Bore outer surface 66 Cylinder pin spring plate 67 guide groove end face 68 guide pin arrow 69 locking bar stop surface 70 Sac kbohrung
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Turning (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0073503A AT414327B (de) | 2003-05-14 | 2003-05-14 | Werkzeugaufnahmevorrichtung |
PCT/AT2004/000098 WO2004101188A1 (de) | 2003-05-14 | 2004-03-18 | Werkzeugaufnahmevorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1622731A1 true EP1622731A1 (de) | 2006-02-08 |
EP1622731B1 EP1622731B1 (de) | 2008-05-21 |
Family
ID=33437383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04721424A Expired - Lifetime EP1622731B1 (de) | 2003-05-14 | 2004-03-18 | Werkzeugaufnahmevorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1622731B1 (de) |
AT (2) | AT414327B (de) |
DE (1) | DE502004007230D1 (de) |
WO (1) | WO2004101188A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7721586B2 (en) | 2005-02-08 | 2010-05-25 | Wilson Tool International Inc. | Press brake tool seating technology |
US7308817B2 (en) | 2005-02-08 | 2007-12-18 | Wilson Tool International Inc. | Push plate tool holder for press brakes |
US7596983B2 (en) | 2005-07-11 | 2009-10-06 | Wilson Tool International Inc. | Press brake clamp incorporating tool-seating mechanism |
JP5102218B2 (ja) * | 2005-11-11 | 2012-12-19 | ウィラ・ベスローテン・フェンノートシャップ | 安全部材の作動部材のための固定化手段を有する形成工具 |
AT514078B1 (de) | 2013-06-20 | 2014-10-15 | Trumpf Maschinen Austria Gmbh | Biegewerkzeug |
AT515526B1 (de) * | 2014-08-12 | 2015-10-15 | Trumpf Maschinen Austria Gmbh | Biegewerkzeug und Greifvorrichtung zum Manipulieren des Biegewerkzeuges |
CN104607546A (zh) * | 2015-02-09 | 2015-05-13 | 南通华德锻压机床有限公司 | 一种可旋转卡口式折弯机上刀 |
IT201600106997A1 (it) * | 2016-10-24 | 2018-04-24 | T E D A S R L | Dispositivo di bloccaggio di utensili in una macchina utensile, particolarmente del tipo di una pressa piegatrice. |
CN106623615B (zh) * | 2016-11-25 | 2018-09-18 | 盐城工学院 | 一种数控折弯机上模用连接柄 |
IT201900006656A1 (it) * | 2019-05-08 | 2020-11-08 | Salvagnini Italia Spa | Macchina piegatrice per lamiere metalliche |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4895014A (en) * | 1986-08-28 | 1990-01-23 | Houston David L | Failsafe tool clamping system for press brake |
NL9100034A (nl) * | 1991-01-10 | 1992-08-03 | Wila Maschf Bv | Kantpersgereedschap, en een adaptor en een kantpers daarvoor. |
IT1298501B1 (it) * | 1998-01-28 | 2000-01-12 | Tecnostamp S R L | Sistema di azionamento di ganasce di presse piegatrici |
DK199901582A (da) * | 1999-11-03 | 2001-05-04 | Thm Vaerktoej As | Pladebukkemaskine, henholdsvis værktøjsholderdel og bukkeværktøj til samme |
IT1311880B1 (it) * | 1999-11-30 | 2002-03-19 | Luciano Gasparini | Dispositivo per il supporto ed il bloccaggio con funzione di sicurezzadi almeno un utensile intercambiabile, particolarmente in una macchina |
AT411819B (de) * | 2002-09-16 | 2004-06-25 | Trumpf Maschinen Austria Gmbh | Biegewerkzeug und werkzeugaufnahmevorrichtung für ein solches |
-
2003
- 2003-05-14 AT AT0073503A patent/AT414327B/de not_active IP Right Cessation
-
2004
- 2004-03-18 DE DE502004007230T patent/DE502004007230D1/de not_active Expired - Fee Related
- 2004-03-18 WO PCT/AT2004/000098 patent/WO2004101188A1/de active IP Right Grant
- 2004-03-18 EP EP04721424A patent/EP1622731B1/de not_active Expired - Lifetime
- 2004-03-18 AT AT04721424T patent/ATE395990T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004101188A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1622731B1 (de) | 2008-05-21 |
AT414327B (de) | 2007-09-15 |
DE502004007230D1 (de) | 2008-07-03 |
WO2004101188A1 (de) | 2004-11-25 |
ATA7352003A (de) | 2005-02-15 |
ATE395990T1 (de) | 2008-06-15 |
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