• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    For a sheet-metal bending press of the kind in which the coaction of a die and a punch causes the metal plate to be bent at an angle, a device is provided, which is capable of detecting the angle of bend of the plate being machined in a continuous way and of generating a signal which has a magnitude proportional to the angle width. The signal can be used either as a continuous angle-checking means, or for driving the automatized operation of the press, or for both functions. The necessity of removing the plate to be bent angularly in order to check the angle progressively produced is entirely eliminated. A zero method can be adopted for taking readings when the front surface of the detector proper of the angle is not exactly coplanar with the resting surface for the plate on the press bed.
    公开号:SU747405A3
    申请号:SU782571449
    申请日:1978-01-31
    公开日:1980-07-23
    发明作者:Малатто Ренцо
    申请人:Селеконтрол С.А.С. (Фирма)；
    IPC主号:
    专利说明:

    A prismatic matrix body 7 is installed on the lower block. In its upper part there is a flat bearing surface 8 for accommodating a bending metal sheet 9, on which a longitudinal stream 10 is made, extending longitudinally relative to the body 7, having V-shaped edges 11 and 12, is connected radially to the supporting surface 8. Radius of curvature edges 11 and 12 are the same.
    The lower part of the punch 2 has a working part 13 of a V-shaped form, identical in the vertical plane to a V-shaped stream 10 of the matrix.
    By placing a flat metal sheet 9 on the surface 8 of the body 7 of the die and the subsequent lifting of the entire lower unit 1 using means the sheet 9 interacts with the working part 13 of the punch 2 and bends by a bend angle. This angle will be formed during the bending process and will be the smaller, the smaller the distance between the die and the punch.
    In the housing 7 there is a guide socket and a matrix strand symmetrical with respect to the axis. The axis of the socket 14 is perpendicular to the supporting plane 8 and is located in the plane of symmetry of the V-shaped stream 10. The diameter of the socket 14 is smaller than the width of the V-shaped stream 10. This socket 14 is a lined guide for the probe 15, namely for its head 16 On the front surface 17 of the head 16 there is a groove 18, the edges 19 and 20 of which are connected radially to the front surface 17, and their radii of curvature correspond exactly to the radii of curvature of the edges 11 and 1 of the stream 10 in the matrix body 7. In addition, the shape of the groove 18 exactly corresponds to the shape of the stream 10 and has a V-shape. On the side of the head 16 of the probe G5, a longitudinal groove 21 is made to position the pin 22, which is screwed into the matrix body 7, in order to prevent any rotation of the probe 15 in its guide slot 14, as well as to limit its linear displacement. Due to the connection between the groove 21 and the pin 22, the probe 15 is held in such a position that its groove 18 is located coaxially with the stream 10.
    The lower part of the probe 15 passes into the shank 23 on which the washer 24 is installed, which is located in the cavity 25 made in the housing 7 of the matrix 1a.
    Matrix housing 7 is mounted on base 26.
    A cogged rail 27 is placed in the base 26, which can be displaced 13 by guide 28 coaxially with housing 14, 7. In the upper part of the rack, the rail 27 contacts with the lower end of the shank 23 of the probe 15, while the lower part of the rack 27 is displaced by the spring 29, which is adjusted by means of the screw 30.
    The spring 29 displaces the rail 27 upward and at the same time the probe 15, which is thus kept in an inoperative position, determined by the location of the washer 24 in the cavity 25. In this position, the front surface 17 of the probe 15 is flush with the supporting plane 8 of the matrix body 7.
    A toothed rail 27 engages with a gear 31 attached to a mandrel 32 of an angular position sensor 33. The sensor 33 is installed in a special socket, made in the base 26. This sensor serves to convert into an electric signal the angular movement of the mandrel 32 caused by the linear movement of the toothed rack 27. The sensor is connected to the control system (not shown).
    5 / the device works as follows.
    The flat sheet 9 is installed in the supporting plane of the housing 7, and the matrix therefore on the front plane 17 of the probe 15, which is flush with it. The sheet, which is bent as a result of the interaction of the matrix body 7 and the punch 2, shifts down the probe 15, which in turn linearly moves the toothed rack 27 turning the mandrel 30 of the sensor 33 at a certain angle, as a result of which a certain electrical signal is generated. Since the linear displacement of the probe 15 is proportional to the bending angle of the sheet, then the signal produced by the angle position sensor will be proportional to this angle.
    The bendable sheet 9 is rotated around the edges 11 and 12 of the V-shaped strand 10 and is placed on these edges. Similarly, the sheet is positioned on the edges 19 and 20 of the V-shaped groove 18 of the probe 15, as a result of which the latter is pressed and held against displacement under the action of the spring 29.
    To displace the probe 15 in proportion to the angle of the bend, it is necessary that the radii of curvature of the edges 11 and 12 of the brook 10 are equal to those of the edges 19 and 20 of the groove 18.
    In this case, a relationship is obtained that binds the linear displacement of the detector element to the bending angle, namely, the displacement is directly proportional to the cotangent.
    The signal supplied by the sensor 33 may have a visual reproduction allowing in the bending process at any time to monitor the bending angle received at that time.
    In addition, it can serve as a command to stop the bending press after obtaining the required bending angle. It is also possible to use the sensor signal of the command for returning the die and the punch to check the strength of the elastic spring of the sheet.
    Thus, correctly using the signal coming from the device, the bending process can be carried out automatically without removing the sheet from the press.
    It should also be noted that placement in one plane of the supporting plane of the matrix and the front surface of the probe when the latter is in the non-operating position is not necessary for normal operation of the device.
    The front surface 17 of the probe 15, when the latter is in an inoperative position, may protrude beyond the supporting plane 8 of the matrix housing 7. In this case, when the sheet 9 is located on the supporting plane 8 of the housing of the matrix 7, the probe 15 is pressed downwards and the process starts where the front surface 17 of the probe 15 is nachocytes on the reference plane 8. In this case, a correction is made for the displacement of the 1st 15 of its inactive position b the position of the press, since this displacement is the beginning for the signal that disappears to the end readings from the bending angle.
    The effectiveness of the described device for bending sheet metal is caused by an increase in the productivity of the bending process.
    权利要求:
    Claims (5)
    [1]
    1. A device for bending sheet metal, comprising a die in the form of a matrix with a flat bearing surface on which a symmetrical longitudinal stream is made, and an I-shaped punch, means for reciprocating movement of the stamping elements and a control system, characterized in that performance, it is equipped with a spring-loaded detector, made in the form of a measuring probe with a / -shaped longitudinal groove, the converter moving the probe into an electrical signal and the locking assembly preventing it move, while in the matrix there is a guide slot, which is symmetrical relative to the axis of the matrix stream.
    [2]
    2. The device according to claim 1, characterized in that the symmetrical longitudinal stream of the matrix is limited by an i-shaped surface of the identical surface of the groove in the probe.
    [3]
    3. The device according to claim 1, characterized in that the locking assembly is made in the form of a longitudinal groove on the lateral surface of the probe and fixed in the matrix pin, the protruding part of which is placed in this groove.
    [4]
    . 4. A device according to claim 1, characterized in that the transducer for moving the probe to an electrical signal is made in the form of a voltage sensor proportional to the movement of the probe.
    [5]
    5. The device according to claim 4, characterized in that the output of the sensor mentioned above is connected to the control system.
    Sources of information taken into account in the examination
    0
    1. Catalog of the company Dai-Acro for press brakes, USA, 1976.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU747405A3|1980-07-23|Sheet material bending device
    US4489586A|1984-12-25|Device for measuring the fold angle in a sheet metal bending press
    EP0427757B1|1992-09-02|Device for measurement of gap and flush
    KR100321220B1|2002-07-02|Work angle measuring device
    US5351942A|1994-10-04|Clamp apparatus used in hole machining device
    JPH06238343A|1994-08-30|Bending angle measuring device
    EP0869328A3|2000-07-26|Method and device for accurately measuring a longitudinal contour of a cylindrical object, such asscrew thread
    EP0908253A1|1999-04-14|Punching tool
    SU517276A3|1976-06-05|Method and device for fastening the clock spiral to the block
    JPH1194505A|1999-04-09|Method and device for measuring lateral bend in steel sheet
    JP2612180B2|1997-05-21|Bending angle control method of bending machine
    JP2507736B2|1996-06-19|Press brake
    SU1538029A1|1990-01-23|Strain gauge
    JPS5942401A|1984-03-09|Strain sensor
    SU836857A1|1982-12-07|Device for controlling spring-back angles for pipe bending machine
    CN213515410U|2021-06-22|Auxiliary support for needle gauge detection
    FR2331392A1|1977-06-10|Bending press for heavy section steel plates - has former connected to pivot arm located by pin on bracket
    KR19990018456U|1999-06-05|Center distance measuring device between holes
    JPH069349Y2|1994-03-09|Pre-retention meter
    SU1418064A1|1988-08-23|Apparatus for measuring deviations of vertical press slide movements
    SU1145243A1|1985-03-15|Method of fixing resistance strain gauge to object
    JPH10538A|1998-01-06|Back gauge l-axis positioning device
    SU1670330A1|1991-08-15|Device for measuring length of plate in determining residual strain
    SU1186997A1|1985-10-23|Arrangement for testing plastic helenoc for elasticity
    SU436249A1|1974-07-15|DEVICE FOR MEASURING CONTACT FORCES OF FRICTION WHILE ROLLING
    同族专利:
    公开号 | 公开日
    US4131008A|1978-12-26|
    ES466505A1|1978-10-01|
    DD134566A5|1979-03-07|
    BR7800602A|1978-11-28|
    CH621950A5|1981-03-13|
    AU513497B2|1980-12-04|
    AT358363B|1980-09-10|
    NL7801000A|1978-08-03|
    BE863487A|1978-05-16|
    FR2379046B1|1981-02-27|
    PT67566A|1978-02-01|
    DE2803375A1|1978-08-03|
    ZA78238B|1978-12-27|
    IT1072273B|1985-04-10|
    AU3279078A|1979-08-02|
    PT67566B|1979-06-18|
    ATA50778A|1980-01-15|
    CA1092345A|1980-12-30|
    FR2379046A1|1978-08-25|
    PL204368A1|1978-12-18|
    JPS53127364A|1978-11-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3146819A|1960-10-31|1964-09-01|Waldemar Lindemann|Press having automatic bend detector|
    AT311152B|1972-04-13|1973-11-12|Haemmerle Ag Maschf|Bending tool|
    DE2346797A1|1973-09-17|1975-04-03|Eitel Kg|AUTOMATIC STRAIGHTING PROCEDURE AND STRAIGHTING PRESS WITH ONE STRAIGHTING OFFICE|
    US3919776A|1974-02-21|1975-11-18|Terrence H Upton|Measuring apparatus|
    US3978706A|1974-12-24|1976-09-07|Nippon Kokan Kabushiki Kaisha|Precision bending work method for metallic materials|DE2952108C2|1979-12-22|1983-11-24|Hämmerle AG, Zofingen|Arrangement for height adjustment of the die base of bending tools for bending sheet metal|
    DE3008701A1|1980-03-07|1981-09-24|Johann 7057 Leutenbach Hess|ANGLE MEASURING DEVICE FOR BENDING PRESSES|
    US4430879A|1981-06-12|1984-02-14|Hurco Manufacturing Company, Inc.|Apparatus for controlling a press brake|
    AT374706B|1982-06-07|1984-05-25|Haemmerle Ag|METAL BENDING METHOD AND BENDING DEVICE FOR EXERCISING THE METHOD|
    CH654761A5|1984-02-03|1986-03-14|Beyeler Machines Sa|BENDING PRESS FOR WHICH THE FOLDING DEVICE ENABLES CONTINUOUS CONTROL OF THE FOLDING ANGLE OF THE WORKPIECE.|
    US4802357A|1987-05-28|1989-02-07|The Boeing Company|Apparatus and method of compensating for springback in a workpiece|
    AT390575B|1988-04-25|1990-05-25|Haemmerle Ag|METHOD FOR BENDING A WORKPIECE|
    AT389829B|1988-05-03|1990-02-12|Haemmerle Ag|METHOD FOR BENDING SHEET PIECES WITH THE AID OF A BENDING DEVICE|
    US5062283A|1988-07-19|1991-11-05|Yamazaki Mazak Kabushiki Kaisha|Press brake and a workpiece measuring method in the press brake|
    US4922742A|1988-11-03|1990-05-08|Westinghouse Electric Corp.|Apparatus for precision forming of sheet metal parts|
    CH689613A5|1992-10-20|1999-07-15|Beyeler Machines Sa|Device for measuring the bending angle of a sheet in a press.|
    IT1260892B|1993-02-23|1996-04-29|Prima Ind Spa|DEVICE TO MEASURE THE CORNER OF A PIECE, IN PARTICULAR THE CORNER OF BENDING A PIECE OF SHEET METAL.|
    US5408858A|1994-01-24|1995-04-25|Amada Engineering & Service Co., Inc.|Bending machine utilizing controlled expandable pressure device to apply uniform pressure to work material|
    DE19519108C2|1995-05-24|1999-03-25|Knupfer Metallverarb Gmbh|Method and device for measuring angles, in particular bending angles of sheet metal parts|
    DE29508662U1|1995-05-24|1995-09-21|Knupfer Metallverarb Gmbh|Device for measuring angles, in particular bending angles of sheet metal parts|
    DE19521369C2|1995-06-12|2000-06-29|Trumpf Gmbh & Co|Processing machine for forming workpieces|
    IT1293174B1|1997-04-11|1999-02-12|Luciano Gasparini|METAL SHEET PRESS-BENDING PROCESS WITH DIRECT MEASUREMENT SYSTEM INCLUDING A COMPENSATION FUNCTION AND|
    AT212259T|1997-06-20|2002-02-15|Luciano Gasparini|BENDING PRESS|
    US6055737A|1998-06-11|2000-05-02|Sweaney; Scylvester L.|Quick mount angle measurement gauge|
    IT1311827B1|1999-04-16|2002-03-19|Luciano Gasparini|SELF-CENTERING TILTING FORK OF THE FORK, PARTICULARLY FOR MEASURING ON FOUR POINTS OF THE|
    US20040194417A1|2003-04-01|2004-10-07|William Paul|Wall angle and main tee for use in suspended ceiling grid structure and including multi-purpose measurement indicia|
    ITPR20040010A1|2004-02-18|2004-05-18|Set 2002 S R L|PROCEDURE AND PNEUMATIC DEVICE FOR DETECTING THE BENDING ANGLE OF A SHEET OF SHEET IN A FOLDING PRESS.|
    JPWO2009141864A1|2008-05-20|2011-09-22|水河　末弘|Bending angle detecting device, plate bending method, and computer-readable program recording medium recording control program|
    CN102861796A|2012-09-28|2013-01-09|信源电子制品有限公司|Manual bending mechanism|
    CN104056887A|2014-06-28|2014-09-24|永济新时速电机电器有限责任公司|Auxiliary workbench device for molding sheet metal part|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT07202/77A|IT1072273B|1977-02-01|1977-02-01|DEVICE FOR THE DETECTION AND ADJUSTMENT OF BENDING ANGLES PARTICULARLY SUITABLE FOR PRESSES-FOLDERS|
    [返回顶部]