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
  • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work

Definitions

• the invention relates to a device for bending 00004 sheet metal, wherein the sheet metal is clamped between a movable 00005 upper beam and a fixed machine table 00006 and a leg 00007 protruding from the clamping is bent with one below the machine table 00008 rotatable, recessed bending tool actuated by a movable tool00009 table.
• a device for bending 00004 sheet metal wherein the sheet metal is clamped between a movable 00005 upper beam and a fixed machine table 00006 and a leg 00007 protruding from the clamping is bent with one below the machine table 00008 rotatable, recessed bending tool actuated by a movable tool00009 table.
• Such a device is known from DE-Al 195 40 40 406 00012.
• the content of this patent application is hereby fully incorporated into the disclosure of the present 00014 invention, also for the purpose of including features 00015 of this patent application in the claims of the present invention.
• This device consists of 00017 a rotatably mounted, recessed tool, which sits on a movable tool table.
• the 00019 upper cheek and the tool table are connected to each other by hydraulic cylinders, so that when the 00021 cylinder is retracted, the upper cheek first moves and the sheet 00022 jams. Then the tool table is raised, 00023 whereby the rotatably mounted tool is supported with a 00024 edge below the clamping, while the 00025 presses the other edge against the sheet and bends it.
• 00026 00027 With regard to the prior art Tech00028 described above, a technical problem of the invention 00029 is seen in advantageously developing a device of the type in question 00030.
• 00031 00032 This problem is solved first and foremost in 00033 subject of claim 1, whereby it is emphasized that the bending tool in a guide formed on the machine table on the machine table above and below 00036 is supported. As a result of this configuration
• the object of the invention provides that the bending tool
• 00044 has body. The latter is preferred on the one hand
• 00046 also forms an axis of rotation for
• a bending edge of the bending tool at least one
• the guide be horizontal, i.e.
• 00069 runs parallel to the machine table.
• 00074 conceivable, for example in the range of 1 or 2 °.
• 00074 conceivable, for example in the range of 1 or 2 °.
• 00080 movable upper beam moves. It can also be provided
• 00082 is directed upwards at an acute angle.
• 00089 can also be provided in combination with this. Furthermore,
• 00090 also turns out to be an advantage of a guided tour
• 00091 does not run in a straight line, for example curved in cross section
• 00093 curving guide is a guide of the previous
• 00094 described type can connect. 00095
• the invention further relates to a device of the in
• the invention further relates to a device of the 00107 type described above, wherein it is proposed for advantageous further education that the wings of a 00109 swing arm row are of different lengths compared to the swing arms of the other 00110 swing arm row and / or have different inclinations, possibly also in the Starting 00112 position.
• the wings of a lower row of 00113 wings can be longer and start from a different slope than the wings of an upper 00115 wing row.
• the invention relates to a device of the type described 00118, in which 00119 is advantageously proposed that the position of the rocker pivot points is adjustable.
• the invention is also concerned with a device of the type described, which is further developed in part 00004 in such a way that the vibrations in the rocker rows in the unactuated starting position 00126 assume different angles of attack.
• 00127 00128 Furthermore, the invention relates to a device in 00129 of the type described above, wherein the upper beam 00130 and the tool table are connected to one another via a hydraulic cylinder 00131.
• Such an arrangement 00132 is also known from the aforementioned DE-Al 195 40 406 be00133, in which the hydraulic cylinder attached to the tool 00134 table acts with one free end directly on 00135 the upper beam.
• the hydraulic cylinder preferably 00138 acts indirectly on the upper beam, for example by means of an eccentric crank rocker 00139.
• the holding forces are automatically 00140 on the movement of the bending tool and this 00141 occurring forces adjusted.
• 00153 tool bends the sheet. It is preferably one
• the eccentric is designed as a triangular body
• the invention also relates to a device according to the
• 00169 tool table is adjustable. For example, the senior
• FIG. 2 shows a partial cross section through the device, 00189 showing the unactuated initial position of a work table 00000, with a lowered position 00192 shown in dash-dotted lines 00191 of an upper beam for clamping a sheet metal; 00193 00194
• FIG. 3 shows an enlargement from FIG. 2 relating to the starting position 00005; 00196 00197
• FIG. 4 shows a representation corresponding to FIG. 3, 00198 however after lowering the upper cheek for clamping the sheet to be bent; 00200 00201
• FIG. 5 shows a representation corresponding to FIG. 2, 00202 however in the course of the bending process; 00203 00204
• FIG. 6 shows a follow-up view of FIG. 5 after the sheet has been bent; 00206 00207 FIG.
• FIG. 1 is a device 1 for bending sheet metal, with 00216 a movable upper beam 2 and a fixed machine table 3. The latter forms a fixed lower beam 4 00219 on the upper side facing the upper beam 2 00218 from (see Fig. 2).
• 00220 00221
• rockers 6 a movable 00222 tool table 5 is articulated on the machine table 3 via rockers 6.
• the tool table 5 carries a rotatably mounted 00231 bending tool 7.
• 00232 00233 The latter essentially consists of a, facing the 00234 upper cheek 2, in the unactuated initial 00235 position according to FIG.
• a 00251 recess 14 is provided, into which the lower beam 4 is immersed in the course of the bending 00252 process.
• the machine table 3 forms a guide 15 on the underside of the lower beam 00255 4, which in the embodiment shown is straight, horizontal and is delimited on the upper side by the lower beam 4 and on the underside by 00258 a guide base 16 00259 fastened on the machine table side.
• the vertical clear dimension of this guide 00260 15 corresponds approximately to the diameter of the roller body 11 00261 of the bending tool 7.
• the roller body 11 of the bending tool 7 forms a movable axis of rotation y in the 00264 guide 15.
• 00265 00266 The arrangement is selected such that a offset dimension a of the 00267 fixed axis of rotation x of the bending tool 7 to a bending edge 17 formed in 00268 area of section 13 00269 is approximately half the distance dimension b between the fixed 00270 axis of rotation x and the movable axis of rotation y in corresponds to 00271 guide 15.
• the latter 00275 in a cross section with the machine table 3 includes an 00276 acute angle and here upward in the 00277 direction on the upper beam 2 or downwards, from the 00278 upper cheek 2 is directed away. Further is also 00279 conceivable that the guide 15 curved in cross section
• the machine table 3 is between a left and
• Each machine stand 18 has the area facing the 00287
• 00313 pair 22 and hydraulic cylinder 23 is on both machine 00314 nenstands 18, consequently provided on both sides of the tool table 5, mirror-symmetrical to each other.
• 00316 00317 The unactuated initial position is stop-limited 00318 by jacks 25 arranged on the front of the machine table 3, 00319 under the tool table 5.
• 00320 00321 To bend a sheet 12, the hydraulic cylinders 00322 of 23 are extended, which is initially done by the Exzen00323 ter 21 and the eccentric crank - Swing arm 22 formed 00324 lever transmission causes lowering of the upper beam 2 for clamping the sheet 12.
• the 00326 on the sheet metal 12 upper cheek 2 forms a 00327 support for the hydraulic cylinders 23, after which the further movement of the tool table 5 upwards by 00328 causes the tool table 5 to move upwards about the rocker arms 6 'pivoting about pivot points 00330 6'.
• 00331 The bending tool 7, which is placed on the tool table 5 via the rotating body 9, pivots in the course of the upward movement 00333 of the tool table 5 in the direction of the 00334 upper beam 2, the protruding from the clamping 00335 de leg 30 of the sheet 12 around the upper beam 2 00336 will.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bending Of Plates, Rods, And Pipes (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
• Manufacturing Of Electric Cables (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7882376

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (3)

• 1998
  • 1998-09-26 DE DE19844244A patent/DE19844244A1/de not_active Withdrawn
• 1999
  • 1999-09-16 AT AT99947370T patent/ATE229852T1/de not_active IP Right Cessation
  • 1999-09-16 DE DE59903860T patent/DE59903860D1/de not_active Expired - Fee Related
  • 1999-09-16 ES ES99947370T patent/ES2189488T3/es not_active Expired - Lifetime
  • 1999-09-16 EP EP99947370A patent/EP1115514B1/fr not_active Expired - Lifetime
  • 1999-09-16 AU AU60845/99A patent/AU6084599A/en not_active Abandoned
  • 1999-09-16 WO PCT/EP1999/006866 patent/WO2000018525A2/fr not_active Ceased

Non-Patent Citations (1)

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