• 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:

    公开号:AT510052A1
    申请号:T10172010
    申请日:2010-06-21
    公开日:2012-01-15
    发明作者:Paolo Matassoni
    申请人:Andritz Tech & Asset Man Gmbh；
    IPC主号:
    专利说明:

    21/06 10 13:56 FAX -43 316 6802 454. ANDRITZ PATENT 1 ^ 1 004
    Drive unit for a punching press or a press
    The subject of this invention is a drive unit for a punch press or a press for moving a plunger, wherein the 5 plunger movement of a Liftweg for removing and approaching the plunger from and to a workpiece and a working stroke for machining the workpiece composed.
    The subject of this invention also forms a method for processing a workpiece in which the drive unit according to the invention is used.
    Actuators for the ram of stamping presses or presses are well known, these are usually spindle, eccentric or hydraulic drives. However, embodiments with linear drives are also known. 15 These drives provide the stroke movement of the ram. On the plunger, a punching or forming tool is arranged, through which the workpiece processed, for example, punched or formed, is. For this machining process, a considerable pressing force of the plunger is required. On the other hand, the ram must be lifted with the tool from the sheet, so that the machined workpiece 20 can be transported or a new sheet in the punching machine or, can be inserted into the press, the movement of the plunger from and to the workpiece is referred to as Liftweg. The actual machining of the workpiece is carried out in the working stroke. For the working stroke a much stronger drive power is required than 25 for the Liftweg. In Fig. 1, a prior art press is shown. The ram is driven by two high-performance spindle drives of high precision. These spindle drives realize here the 30 lift path and the working stroke. Such a device has the disadvantage that i the machining time for a workpiece is limited by the spindle drive, since a spindle drive can not be operated arbitrarily fast. The machining speed is determined on the one hand by the spindle drive 5212 AT 1 2 1/06 2010 MO 13:53 [SE / EM NR 76461 0) 004 0005
    2] / 06 10 13:56 FAX +43 316 8002 454 ^ f ^ TEJ ^ T --'- 1 ----- - - ϊ ~ Λ | * ~ i " · " _ · * _ · • «· · · · · · · · · · · · · · · · · · · · · · limited, but also because of the tool, which must not be allowed to penetrate the workpiece at will otherwise it will be damaged.
    In addition, in other conventional stamping presses and presses a drive unit for the movement of the plunger is used, which is actually oversized for the pure Liftweg 5.
    Often, a large total stroke of the plunger is required, but this great movability of the plunger has an unfavorable effect on the construction of the plunger drive. For example, reduces the buckling stiffness of the threaded spindle of a spindle drive by a higher ram stroke. 10
    The invention is therefore based on the object to disclose a drive unit for a stamping press or a press, with a higher production speed can be realized than in conventional systems and bet the drive unit can be better matched to the working stroke 15.
    This object is achieved by a novel drive unit for a stamping press or a press, wherein the drive unit has a secondary drive and a main drive, wherein the working stroke is performed only by the main drive.
    The lifting height of the plunger is thus realized by the combination of a power take-off with a main drive. This has the advantage that for the Liftweg mainly the PTO is used, the PTO needed for 25 only a small drive torque and no complex measuring systems. Thus it is possible to realize a highly dynamic lift stroke.
    The main drive is used for the actual machining process of the workpiece. Since the auxiliary drive primarily takes over the lifter path, the speed of the main drive can be optimally adapted to the machining process, without dabet the highest possible speed of the main drive in the foreground. 2
    5212 AT 2V06 2010 MO 13:53 TSE / FM ur 7saci l ^) 006
    1/06 ΊΟ 13:! 56 FAX -Ί3 316 6902 454 ANDRITZ PATENT ------ 7Ϊ, 1-Π-. · ·· * ·
    Preferably, the power take-off on a toggle lever system with upper and lower toggle arms, a toggle joint and a hard stop, the toggle lever are mechanically locked by the hard stop. 5 The mechanical locking of the toggle lever system absorbs the pressing forces occurring during machining through the fixed stop and the top bearing bearing of the upper toggle lever. The drive unit for the auxiliary drive is not loaded. Thus, it is possible to realize a high dynamic lift stroke with low cost and simple parts. For the knee in system, no complicated turning and grinding parts are required (eccentric shaft bearing, eccentric shaft, stroke adjustment, etc ....), 15 It is advantageous if the toggle lever system is operated via a rack drive or via a spindle drive. These drives have a simple structure and are inexpensive to produce.
    The toggle lever system can also be actuated by a linear drive. 20 linear actuators work without contact and are therefore very wear-resistant. In addition, high accelerations and high end speeds can be achieved with linear drives.
    It makes sense if the upper and lower toggle leg on the side facing the 25 fixed stop form an angle of more than 181 ° when the toggle handle! Attach to the fixed stop, as this automatically locks the toggle lever system.
    It is favorable if the main drive is a spindle drive, preferably a servo-driven spindle drive. Thus, the spindle drive is freely programmable and takes over the overload protection (current consumption measurement), the ram adjustment, the adjustment of the tool installation height and
    5212 AT 21/06 2010 MO 13:53 fSE / EM HR 78461 01006 21 / PC ΊΟ 13:57 FAX +43 310 6902 454 ANDRITZ ££ TE $ T @ 007 part of the lifting height. The pestle is eliminated by the
    Tappet adjustment and overload protection simplified and reduced weight. Since the spindle drive does not have to realize high speeds, the gear ratio and the servo motor size can be optimally adapted to the 5 spindle drive. Compared to conventional
    Eccentric drives required with the drive unit according to the invention
    Spindle drive significantly less lubricant.
    In addition, the length of the threaded spindle of the main drive is reduced by 10 the part of the toggle lever path, this increases the buckling resistance of the
    Main drive.
    The invention also provides a method for processing a workpiece with a punching machine or a press, wherein a plunger is moved by 15 a Liftweg towards the workpiece and wherein the workpiece is processed by a subsequent working stroke of the plunger. According to the Liftweg are essentially carried out by a power take-off and the working stroke by a main drive, 20 The plunger can be lowered by a very fast power take-off. Thereafter, with the help of the main drive, the actual machining of the workpiece can be performed, this can be done with a lower stroke speed than during the lowering movement. Preferably, in the method according to the invention the lift path is executed by a toggle lever system with fixed stop. It is advantageous if the toggle lever system is already mechanically locked by the fixed stop before the power stroke is executed for machining the workpiece. This prevents buckling of the toggle lever. 30
    It is also possible if after the machining of the workpiece for the return stroke of the ram of the power take-off and the main drive are operated simultaneously to remove the plunger from the workpiece. The 5212 AT 4 21/06 2010 MO 13:53 [SE / EM NR 784G1 @ 007
    © OOS
    / 06 10 1,1: 57 FAX +4 3 316 6902 454 ANDRITZ PATENT ··· * * · * ·. ,
    Total movement of the plunger away from the workpiece is thus faster than the total plunger movement to the workpiece. The processing time per workpiece can be significantly reduced. In the following, the invention will be described with reference to drawings. Show it:
    1 shows a press or a punching machine with spindle drive according to the prior art; 10
    2 shows a schematic perspective view of a drive unit according to the invention, in which, by way of example, the auxiliary drive has been realized via a toggle lever system and the main drive via a spindle drive; FIG. 3 shows a press or a stamping machine with the drive unit according to the invention from FIG. 2, wherein the auxiliary drive is at top dead center; FIG.
    4 shows a press or a stamping press with the 20 drive unit according to the invention from FIG. 2, wherein the auxiliary drive is at bottom dead center;
    FIG. 1 shows a conventional punching press or a press. In this case, a plunger 5 is guided via tappet guides 4 in a press frame 3 25. The ram stroke is realized here by a spindle drive, it consists in the present example of two spindles 1, which are each driven by a spindle motor 2. On the plunger 5 is a tool 6 for the machining of a workpiece 8, for example, a sheet attached. Below the workpiece 8 is a table top 7, which is firmly connected to the press frame 3. The tool 6 may be a punching tool or a forming tool. 5
    5212 AT 21/06 2010 MO 13.53 [SE / EM MR 7846] @ 008 @ 009
    21'06 '10 13:57 FAX +4 3 .11 6 6902 454 AJDRJJZ TE! ST. * '.. **. * * · · · · • • > »* * * * ·· ♦ ^ · J * * #
    In most cases, such a device is used to machine a sheet metal in strip form, wherein, for example, shaped pieces are punched out of the sheet metal. D ^ can be transported with the sheet metal strip for the subsequent punching or Umfonjnvorgang, the tool 6 must be lifted sufficiently high from the sheet metal strip. This movement of the tool 6 from and to the workpiece is referred to as a lift path. In actual Arbeitshjub the machining of the workpiece takes place 8. i
    FIG. 2 shows an embodiment of the drive unit 10 according to the invention for a stamping press or a press. It basically consists of a main drive and a PTO. The main drive is designed here as a spindle drive 20 with a motor 28 and a spindle 2f. At the end of the spindle 21 is the sfjindelauge 22 in which the bolt 23 for connecting the spindle 21 with the plunger 27 (in Fig. 2 not shown) is mounted. I
    Preferably, it is a servo-driven Spindeiantrieb 20, which is freely programmable.
    The auxiliary drive is designed here as a toggle lever system 11. The lifting height of the plunger 27 is realized by the combination of the toggle lever system 11 and the spindle drive 20. The toggle lever system 11 consists essentially of an upper toggle leg 12 and a lower Kniehebjelschenkel 13, which are articulated verbelleji together over the toggle joint 14. The upper toggle lever leg 12 is mounted at the upper end via a headstock bearing pad 10 in a headpiece bearing 9. The headstock bearing 9 is fixedly connected to the press frame 30 (not shown in Fig. 2).
    The lower toggle leg 13 has at the lower end an adapter plate 19, via which the toggle lever system 11 is connected to the spindle drive 20. 30 The toggle is actuated via a rack drive. The rack and pinion drive consists of a rack motor 16 j and a rack 17, via the rack eye 18 with the toggle joint 14th
    5212 AT 21/06 2010 MO 13.53 [SE / EM MR 78461 01009 ΐνρβ ίο 1-3: 57 FAX -43 316 6902 454 (< ANDRJJZ f.ATE ^ T 0010. With the aid of the rack and pinion drive 16, 17, the Of course, instead of the rack drive 16. 17, a spindle drive, a rotating eccentric drive or a non-drive 5 can also be used.
    The toggle lever system 11 also has a fixed stop 15 against which the toggle leg 12, 13 strike when the toggle lever is extended. The fixed stop is adjusted so that the toggle is moved to an angle et of more than 181 ° in operation, before it abuts against the fixed stop 15. The angle α is the angle which is formed by the upper knee lever leg 12 and the lower knee lever leg 13 on the side of the fixed stop 15. Due to the deflections of the knee lever to over 181 ° against the fixed stop 15, this is mechanically locked. By 15 the main drive force exerted pressing forces are absorbed via the headstock bearing 9 and the fixed stop 15.
    In Fig. 3 is now a press or a punching machine with two drive units according to the invention of FIG. 2 and with a plunger 27 which is guided by 20 plunger guides 25 in the press frame 30, shown. The toggle lever system 11 is here in the maximum bent position. The auxiliary drive is thus at top dead center. The plunger 27 is on the ram guide 25 in the press frame! guided. 25 in Fig. 4 is the same device as shown in Fig. 3, but here is the PTO in the bottom dead center or approximately at the bottom dead center. In this position, the knee lever legs 12,13 to the fixed stop 15 and form an angle α of about 181®. Now, if the spindle drives 20 exert a pressing force on the plunger 27 in the direction of the table top 26 for machining a workpiece, the pressing forces occurring over the knee lever legs 12, 13 and the head piece bearing 9 are transmitted to the press frame 30. Part of the press forces is also due to the fixed stop 15 7
    5212 AT
    21/06 2010 MO 13:53 [SE / EM NR 78461 CTlOlO £ 1/06 10 13:55 FAX +43 316 6002 454 ANDRITZ Ρ4ΤΕΓΪΤ 10011 • · · »· ♦ * ·» »« · * ·· ♦ · However, these forces are relatively low, since the knee lever legs 12, 13 are only in a slightly bent position.
    It can be seen clearly that no forces can be transmitted to the rack drive 16, 17 by this slight bending of the toggle leg 12, 13 and by the concern of the toggle on the 5 fixed stop 15.
    Acoustic emissions caused by the attack of Kniehebekelkel 12, 13 to the stop surface 24 of the fixed stop 15 can by a 10 Schnittschlagdämpfung, by elastomeric elements or by
    Gas shock absorbers are reduced.
    In operation, the auxiliary drive is used to move the plunger 27 in Liftweg, in addition, the complete drive system can be compensated by 15 ram weight compensation cylinder. The auxiliary drive only has to have a small torque and does not require complex measuring systems. Thus, it is possible to realize a high dynamic lift stroke with low cost and simple parts. 20 As soon as the PTO is at bottom dead center, the
    Main drive for the actual forming or punching movement of the plunger 27 are actuated. Since the knee lever legs 12, 13 are supported in an angular position of about 181 'on the fixed stop 15, the system is mechanically locked and the high caused by the main drive pressing forces 25 can not lead to buckling of the toggle leg 12,13.
    Through this interaction of lift stroke and working stroke, it is possible to combine the advantage of a highly dynamic press with the precision of a spindle-driven tray-out press. 30
    During the return stroke of the plunger 27, the main drive and the auxiliary drive can be operated simultaneously, thereby requiring the plunger 27 for the return stroke. 8
    5212 AT 21/06 2010 MO 13:53 fSF / FM HR 7pnci ΠΛ11 21/06 ΊΟ 13:58 FAX +43 31Θ 6902 454 ANDRJTZ ζ ^ ΤΕί ^ Τ 0012 less time than for the lowering stroke, which means that more parts can be processed per unit of time become.
    The complete combination drive can be pre-assembled and in stock as a service part. In the event of a breakdown, the defective system with the service part can be exchanged and repaired without much effort on the part of the demo.
    The position and quantity of the drive units according to the invention consisting of main and auxiliary drive can be freely selected in a stamping press or a press 10. It is structurally conceivable to integrate the drive unit as a single drive or as a two, rotary, four or five-speed drive, since the system can be realized as a transverse or longitudinal drive.
    The invention results in addition to the cycle time reduction and cost advantages 15, since no complex components are needed. The production and assembly are easy. The header complexity is reduced to a minimum, also can be realized a lower overall height of the stamping presses or presses. The embodiments shown in the drawings represent only a preferred embodiment of the invention. The invention also includes other embodiments in which, for example, instead of the spindle drive 20, a hydraulic drive is used as the main drive, the power take-off can be as a centric single drive or as a double-executed external drive 25th will be realized. 9
    5212 AT 21/08 2010 MO 13:53 Γ3Ε / ΕΜ NR 7R4R1 Hl 01
    权利要求:
    Claims (10)
    [1]
    1. Drive unit for a punching press or a press for moving a plunger (27), wherein the plunger movement from a Liftweg to remove and approaching of the plunger (27) from and to a workpiece and from a working stroke for machining the workpiece, characterized in that the drive unit comprises a power take-off and a main drive, wherein the working stroke is performed only by the main drive. 10
    [2]
    2. Drive unit according to Ansprucji 1, characterized in that the auxiliary drive has a toggle lever system (11) with upper and lower toggle limbs (12, 13), eirjiem toggle joint (14) and a fixed stop (15), wherein the toggle levers (12, 13) 15 are mechanically locked by the fixed stop (15).
    [3]
    3. Drive unit according to Anspruci 2, characterized in that the toggle lever system (11) via a rack and pinion drive (16, 17) or via a spindle drive is actuated. 20
    [4]
    4. Drive unit according to claim 2, characterized in that the aarantrieb is actuated. Knee lever system (11) via a Lin
    [5]
    5. Drive unit according to one of claims 2 to 4, characterized in that the upper and the lower toggle give! (12, 13) form on the side facing the fixed stop (15) an angle α of more than 181 °, when the knee lever leg! (12, 13) to the fixed stop (15) strike, so that thereby the knee lifting system (11) is mechanically locked. by 10
    [6]
    6. Drive unit according to one of claims 1 to 5, characterized in that the main drive is a spindle drive (20). 5212 AT 21/06 2010 MO 13:53 [SE / EM NR 78461 ß 013 1/06 ΊΟ 13:58 FAX -43 316 6902 454 • * ^ NDRJJ'Z PjVTEJiJ @ 014 • * t • · · ·
    [7]
    7. A method for machining a workpiece with a punching machine or a press, wherein a plunger (27) is moved by a Liftweg towards the workpiece and wherein the workpiece is machined by a subsequent working stroke of the plunger (27), characterized in that the Liftweg essentially by a power take-off and the power stroke is performed by a main drive.
    [8]
    8. The method according to claim 7, characterized in that the Liftweg by a Kniehebeisystem (11) with fixed stop (15) is executed. 10
    [9]
    9. The method according to claim 8, characterized in that the toggle lever system (11) is mechanically locked by the fixed stop (15) before the working stroke is carried out for machining the workpiece.
    [10]
    10. The method according to any one of claims 7 to 9, characterized in that after machining of the workpiece, the auxiliary drive and the main drive are operated simultaneously to remove the plunger (27) from the workpiece. 20 11 5212 AT 21/06 2010 MO 13:53 [SE / EM HR 7846] @ 014
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    同族专利:
    公开号 | 公开日
    SI2397315T1|2016-04-29|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1007792A|1910-10-17|1911-11-07|Bliss E W Co|Press.|
    JP2534944B2|1991-09-24|1996-09-18|アイダエンジニアリング株式会社|Press machine|
    JP3051841B1|1999-08-10|2000-06-12|株式会社放電精密加工研究所|Pressurizing device|
    DE20020007U1|2000-11-24|2001-03-01|Procon Maschinen Gmbh|Ram drive for a press|
    JP4351215B2|2003-12-12|2009-10-28|株式会社放電精密加工研究所|Press machine|
    DE202006004470U1|2006-03-21|2006-06-14|Schnupp, Konrad|Press comprises a frame with a press table and a vertically movable plunger which is connected to the frame via a knee linkage|
    JP2008043992A|2006-08-21|2008-02-28|Murata Mach Ltd|Linear motor-mounted press machine|JP6005803B2|2014-07-25|2016-10-12|Thk株式会社|Linear motor device and control method|
    CN104552540B|2015-01-16|2017-01-04|石家庄灿高高频机械有限公司|High frequency list angle kludge and single angle packaging technology thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT10172010A|AT510052B1|2010-06-21|2010-06-21|DRIVE UNIT FOR A PUNCH AUTOMATOR OR A PRESS|AT10172010A| AT510052B1|2010-06-21|2010-06-21|DRIVE UNIT FOR A PUNCH AUTOMATOR OR A PRESS|
    ES11004833.7T| ES2567302T3|2010-06-21|2011-06-14|Drive unit for an automatic punching machine or a press and procedure for machining a workpiece|
    EP11004833.7A| EP2397315B8|2010-06-21|2011-06-14|Drive unit for a punching machine or a press and process for machining a workpiece|
    SI201130758T| SI2397315T1|2010-06-21|2011-06-14|Drive unit for a punching machine or a press and process for machining a workpiece|
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