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
• • 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

Definitions

• the invention relates to a bending tool as in the preamble of claim 1 and a tool receiving device as described in the preamble of claim 19.
• Lock element arranged against the action of a spring Drake in the direction of the locking element adjustable actuator, with which in an adjustment in the direction of the locking element this can be brought out of engagement with the terminal block and thus the tool can be removed from the tool holder.
• the disadvantage here is the one-sided holding torque, whereby the tool before tilting before the clamping operation with the
• a pressing tool with a tool holder for a press brake is known, the tool has opposite side surfaces superior and adjustable in this direction vertical locking elements which engage the tool holder in receiving grooves of the tool holder and the over an actuator disposed in the tool from the Nerriegelungs ein in an unlocked position in which the securing means are out of engagement with the receiving grooves, are adjusted.
• Such a device requires elaborate tools which, in addition, are to be correspondingly larger in size due to the arrangement of the actuating device in the tool.
• the object of the invention is to provide a tool receiving device and a tool with a Nerriegelungsvoriques, which is to be arranged in tools of conventional dimensions and an effective function for Nerhi precise a tool crash when
• This object of the invention is reflected in the characterizing part of claim 1 again. given characteristics achieved.
• the surprising advantage of this is that an actuator for reliable locking and unlocking that is to be integrated into the bending tool with the given dimensions is thus achieved, which can be actuated via an unlocking device that is easy to allocate and can be arranged on the tool mounting device.
• a modular securing device is achieved, which is prefabricated as a functional unit and can be retrofitted in this form with little effort in existing bending tools.
• an advantage is also an embodiment according to claim 8, because thus longer tools for the clamping operation are accurately positioned and crash-protected accordingly for the removal process.
• the embodiment according to claim 14 allows the opposite arrangement of the Riegelele- elements in the tool base, whereby a tilting of the tool before the clamping operation is effectively prevented.
• spoke 16 is a good power transmission, but also ease of the automatic engagement and release achieved.
• an embodiment according to claim 18 is advantageous, because thus the unlocking operation, i. an adjustment of the locking elements in the unlocked position in which the locking lugs disengage from the locking receptacles, takes place only after Verrteils- the friction resistance at the bearing surface of the locking lugs in the Aufriegestungsaufhahmen by a slight lifting of the tools, but which also ensures that the tools are already secured by the operator.
• the invention also relates to a tool receiving device, as described in the preamble of claim 19.
• the object is to provide a tool holder device with the bending tools with backup devices are simply exchangeable held.
• This object of the invention is achieved by the characterizing features in spoke 19.
• the surprising advantage here is that with a simple unlocking of the horraufnalimorides a arranged in the bending tools actuator for counteracting adjustment of locking elements can be acted upon.
• Possible embodiments are as described in claims 20 to 22, whereby, regardless of the position of the bending tools used in the longitudinal direction of a bending beam or a tool receiving device, an unlocking process is easy to carry out.
• an embodiment according to claim 28 is advantageous, whereby the mechanical complexity for such adjusting arrangement for actuating the locking elements is reduced.
• FIG. 1 shows a tool holder according to the invention with a bending tool according to the invention, cut;
• FIG. 2 shows another embodiment of the tool receiving device with an unlocking device according to the invention, partially cut away;
• FIG. 1 shows a tool holder according to the invention with a bending tool according to the invention, cut;
• FIG. 2 shows another embodiment of the tool receiving device with an unlocking device according to the invention, partially cut away;
• FIG. 1 shows a tool holder according to the invention with a bending tool according to the invention, cut;
• FIG. 2 shows another embodiment of the tool receiving device with an unlocking device according to the invention, partially cut away;
• FIG. 3 shows a further embodiment of the bending tool according to the invention with an independent unlocking device, cut;
• FIG. 4 shows another embodiment of the bending tool according to the invention with a module-like securing device, cut;
• FIG. 5 shows the bending tool according to FIG. 4, in a view
• FIG. 6 shows a further embodiment of the bending tool with the securing device, cut
• FIG. 7 shows the bending tool according to FIG. 6, in a view
• FIG. 8 shows another embodiment of the bending tool according to the invention with the securing device, cut
• FIG. 9 shows the bending tool according to FIG. 8, in a view
• Fig. 10 shows a further embodiment of the unlocking device in view, cut.
• Fig. 1 is a tool holder 1 with a tool 2 arranged therein, in particular bending tool 3, as a so-called hanging tool 2, that is the in an upper adjustable press bar 4 a bending press 5 inserted bending tool 3, shown.
• the tool receiving device 1 a securing device 11, which prevents a crash of the tool 2 when loosening the clamping device 6 for removing the tool 2 from the tool holder.
• This locking device 11 is by two, in an aligned guide assembly 12 adjustable relative to each other guided locking elements 13, the projecting in the locking position opposite side surfaces 14 of the tool 2 in the region of a tool base 15 and arranged in mutually facing side surfaces 16 of the nutförrnigen vomaufhahme 8, preferably groove-shaped, extending in the direction of a longitudinal extension of the tool holder 1 extending locking receptacles 17 protrude.
• the locking elements 13 are formed as a cylindrical bolt 18 with nose-shaped locking lugs 19 and the guide assembly 12 is designed as a bore 20, in which case further a rotation 21 by a pin 18 arranged in and along the bore 20 extending guide groove 22 engaging pin 23rd is provided.
• the locking elements 13 have a polygonal, in particular square cross section and the guide assembly 12 is formed by a cross section of the locking elements 13 adapted guide, whereby also the rotation 21 is achieved.
• a Drackst Schemeel 27 is adjustably guided and via a spring assembly 28, e.g. a compression spring 29, biased in the direction of the locking elements 13. This causes a biconical wedge 30 on the conicity angularly adapted contact surfaces 31, with which the locking elements 13 are provided on facing end faces 32, a pressure force.
• the spring force to be applied by the compression spring 29 to the push rod 27 is adjustable according to arrow 33, for which purpose an adjusting element 39, e.g. a threaded bolt, for adjusting the bias of the compression spring 29 is provided, which is arranged in a coaxial with the guide assembly 25 extending threaded bore 40 in the tool base 15.
• an adjusting element 39 e.g. a threaded bolt
• the spring force of the compression spring 29 - according to arrow 33 - or the resulting force components - according to arrows 34 - on the locking elements 13 is greater than the tensile force - as indicated by arrow 36 - the traction means 37 so the spiral tension spring 38th
• a center angle 41 of the biconical adjusting wedge 30 will be greater than 15 ° to less than 120 °, preferably between 60 ° and 90 °, in any case selected in a range which is above a friction-induced self-locking.
• the tensile force - according to arrow 36 - of the traction means 37 will be smaller than the operating force to overcome the friction, for adjusting the locking elements 13 in the unlocked position, due to the weight of the bending tool 3, in bearing surfaces 42 of the locking lugs 19th present in the locking receptacle 17. This is to carry out an unlocking and removal of the bending tool 3 from the
• Tool holder 8 a raising of the bending tool 3 - according to an arrow 43 - required, thereby ensuring that the bending tool 3 was deliberately detected by the operator and thus a tool crash, associated with possibly a Be Damage to the bending tool or injury to the operator, avoided.
• the tool receiving device 1 has an unlocking device 44, by means of which the unlocking process is carried out.
• the unlocking process is carried out.
• at least one of the locking elements 13 a in for
• Adjustment of the locking elements 13 - according to double arrow 24 - adjustable, associated actuating means 45 which acts on adjustment against the action of a spring assembly 46 on a Stirnfase 47 of the locking element 13 and thus the locking element 13 is adjusted in the direction of the median plane 26, wherein at the same time the Drackst Congressel 27 via the adjusting wedge 30, against the action of the compression spring 29, is raised.
• the locking elements 13 in a row from the tool holder 8 facing angularly extending control surfaces 50, in the direction of the median plane 26 with simultaneous adjustment of the Drackst formulateels 27 with his Positioning wedge 30, against the action of the compression spring 29, adjusted so far until the locking lugs 19 no longer project beyond the side surfaces 14 of the bending tool 3.
• the tool can be inserted into the tool holder 8. If the locking lugs 19 now reach the area of the locking receptacle 17, the spring-loaded pressure ram 27 with its adjusting wedge 30 results in an adjustment of the locking elements 13 into the locking position, counter to the spring force of the spiral tension spring 38 acting between the locking elements 13.
• one of the locking elements 13 is acted upon by the actuating means 45 and thus carried out the unlocking, wherein the opposite locking element 13 in the direction of the median plane 26 under Ver.
• the spiral tension spring 38 - ringerang of the distance 35 is moved, whereby the locking lugs 19 of both locking elements 13 from the locking position reach the release position and thus the bending tool 3 can be removed from the tool holder 8.
• the unlocking device 44 with the actuating means 45, such as e.g. shown in dotted lines, to adjust the actuating means 45 by means of a control lever 51 against the action of the spring assembly 46.
• the unlocking device 44 with a pressure medium, e.g. Compressed air, pressure oil, etc., beauf- beatable pressure cylinder 52 to operate, which with a piston rod 53 directly to the
• a cover profile 62 extending over its entire length, in particular of a resiliently recoverable material, e.g. Spring plate, arranged.
• spring vanes 63 are formed, which protrude with angled legs 64 in the tool holder 8 arranged openings 65 in the direction of the locking receptacle 17.
• FIG 3 shows a further variant of the actuator 49 with the adjusting means 48 for locking and unlocking the bending tool 3 from the tool holder 8 and with another embodiment of the unlocking device 44 for carrying out the unlocking operation.
• the plunger 27 in extension of the actuating wedge 30 on an actuating extension 70 which projects into a subsequent to the guide assembly 25 and coaxial with a longitudinal central axis 71 bore 72.
• the adjusting projection 70 receiving bore intersects with a rectangular, to the bending tool 3 at right angles to the side surfaces 14, transverse bore 73rd
• the actuating extension 70 is arranged in a connecting region 74 between the adjusting wedge 30 and a guide element 75 spaced therefrom, extending in the direction of the longitudinal central axis 71 slot 76, of which the locking elements 13 connecting spiral tension springs 38 passes.
• the gate element 75 has a wedge-shaped end portion 77 which, in the end position of the Drackst Schemeels 27, wherein the locking wedge 30, the locking elements 13 positioned in their locking position, in the bending tool 3 transverse bore 73.
• an independent in the bore 73 of the bending tool 3 insertable Drackbolzen 78 which at an end face end portion
• the actuating wedge 30 of the Drackst Formulaels from the area of opposite arranged locking elements 13 adjusted and due to the action of the spring force of the locking elements 13 connecting tension spring 38, there is an adjustment of the locking elements 13 in the unlocked position, in which the locking lugs 19 no longer project beyond the side surfaces 14 and thus the bending tool 3 from the tool holder. 8 can be taken.
• the actuator 49 is formed by opposing tooth elements 85, 86 of the locking elements 13 and a drive connection between the opposing tooth elements 85, 86 creating sprocket 87 which is rotatably mounted in the housing 81 about a direction of rotation of the locking elements 13 perpendicular axis of rotation 88.
• a further embodiment of such a locking module 90 is shown, in which in the housing 81, the counter-adjustable locking elements 13 are arranged and positioned over the spring Drake 83 in the locked position.
• the adjusting means 48 of the actuator 49 are further formed in the embodiment shown by a Scherenhebel- arrangement 91, through which the locking elements 13, are drivingly connected.
• the scissors lever assembly 91 is formed by two levers 92, 93, which are pivotally connected in each case on the one hand with the locking element and pivotally connected to a centrally arranged pivot axis 94.
• This central pivot axis 94 is further in side walls 95, 96 of the housing 81 in the region of the median plane 26 arranged oblong holes 97 in the direction the longitudinal center plane 26 adjustably guided.
• the same adjustment of the locking elements 13 from the locking position to the unlocked position by applying an adjusting force - according to arrow 89 - reached on one of the locking elements 13 on the scissors lever assembly 91.
• the stop assembly 84 is provided by overlapping arranged on the locking elements 13 stop projections 98 between the locking elements 13.
• FIGS. 8 and 9 show a further embodiment of the securing device 11 designed in the form of the locking module 90.
• a bending tool 3 traversing the tubular housing 99 are bolt-shaped, the locking elements 13 relative to each other adjustable and guided against rotation.
• the locking elements 13 are positioned by the spiral track spring 83 disposed between them in the locking position, in which the locking lugs 19 project beyond the side surfaces 14.
• the rotation 21 is at the same time the stop assembly 84, which limits the adjustment of the locking elements 13 and is formed by an engaging in a guide groove 100 of the housing 99 locking pin 101, which projects beyond the locking elements 13 on the circumference.
• a locking elements 13 drive-connecting pivot pin 102 is provided which is provided at its outer diameter in the form of a coarse thread with an outer coil 103 and is in engagement with an inner coil 104, which are provided in bores 105 of the locking elements 13, wherein in one of the locking elements 13, the inner coil 104 is designed to be right-handed and in the further locking element 13 to be left-handed. Accordingly, the outer coil 103 of the pivot pin 102 is half-sided on the left and half formed left-hand spiral.
• FIG. 10 shows a further embodiment of the unlocking device 44 for the safety device 11.
• the bending tool 3 is held secured in the tool receiving device 1 by means of the bolts 18 in the locking receptacle 17.
• the meter Chanik for the adjustment of the bolt 18 in the tool base 15 are the previously described ways of execution.
• the spring tongues 66 actuating profile 67 is arranged from a spring plate in the now described embodiment in the locking receptacle 17, wherein the spring tongue 66 when adjusted in the direction of the tool 3, the pin 18 is applied to the front and in the adjustment direction - according to arrow 68 - presses in the unlocked position.
• a slider assembly 110 is mounted in the tool holder 1 with a slide 111 which is linearly displaceable - as indicated by double arrow 112 - in the tool holder 1 and which is mounted in a bore 113 between the spring tongue 66 and the slider 111 bearing pressure pin 114 via a direction of adjustment - according to arrow 68 - angularly extending contact surface 115 cooperates.
• the slider 111 is moved in the direction of the pressure bolt 114, which is adjusted as a result of Kxafrumlenkung in the contact surface 115 in the adjustment - according to arrow 68 - while the spring tongue 66 against the force of the spring action on the side surface 14 of the bending tool Pressed 3 while the bolt 18 in the unlocked position for removal of the bending tool 3 from the horraufhah- mevorraum 1 adjusted.
• Locking element 48 adjusting means

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bending Of Plates, Rods, And Pipes (AREA)
• Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
• Mounting, Exchange, And Manufacturing Of Dies (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Adornments (AREA)

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Applications Claiming Priority (3)

Publications (2)

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• 2002
  • 2002-09-16 AT AT0138302A patent/AT411819B/de not_active IP Right Cessation
• 2003
  • 2003-09-16 AU AU2003265705A patent/AU2003265705A1/en not_active Abandoned
  • 2003-09-16 WO PCT/AT2003/000273 patent/WO2004024361A1/fr active IP Right Grant
  • 2003-09-16 DE DE50305783T patent/DE50305783D1/de not_active Expired - Lifetime
  • 2003-09-16 EP EP03794687A patent/EP1539391B1/fr not_active Expired - Lifetime
  • 2003-09-16 AT AT03794687T patent/ATE345885T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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