EP2313215B1 - Verfahren zum richten von teilen in einer walzenrichtmaschine - Google Patents

Verfahren zum richten von teilen in einer walzenrichtmaschine Download PDF

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Publication number
EP2313215B1
EP2313215B1 EP09780450A EP09780450A EP2313215B1 EP 2313215 B1 EP2313215 B1 EP 2313215B1 EP 09780450 A EP09780450 A EP 09780450A EP 09780450 A EP09780450 A EP 09780450A EP 2313215 B1 EP2313215 B1 EP 2313215B1
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EP
European Patent Office
Prior art keywords
straightening
straightened
leveling
gap
machine
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.)
Active
Application number
EP09780450A
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German (de)
English (en)
French (fr)
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EP2313215A2 (de
Inventor
Horst BRÄUTIGAM
Gerald Khim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arku Maschinenbau GmbH
Original Assignee
Arku Maschinenbau GmbH
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Publication date
Application filed by Arku Maschinenbau GmbH filed Critical Arku Maschinenbau GmbH
Priority to EP09780450A priority Critical patent/EP2313215B1/de
Priority to PL09780450T priority patent/PL2313215T3/pl
Publication of EP2313215A2 publication Critical patent/EP2313215A2/de
Application granted granted Critical
Publication of EP2313215B1 publication Critical patent/EP2313215B1/de
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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
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/02—Straightening

Definitions

  • the present invention relates to a method for straightening parts in a roller leveling machine, according to the preamble of claim 1.
  • the roll straightening is a bending process in which tools, namely straightening rolls, rotate, the straightening material being subjected to alternating bends.
  • the machines used for this purpose are called straightening machines. Therein, the straightening material is moved between two opposite and offset rows of straightening rollers. The upper and lower straightening roller rows are offset from each other so that they can each dip in the space between the opposite pair of rollers.
  • the immersion depth and the geometry of the straightening rollers determine the size of the alternating bends, which must be partially plastic.
  • the largest alternating bends take place on the inlet side of the straightening machine and are usually set decreasing towards the outlet side of the machine, wherein at the outlet usually no bends are applied to the straightening material.
  • band straightening is understood to mean the straightening of sheet metal strips wound on coils, which must be unwound and planed before further processing, for example in a press or profiling system.
  • the band straightening machines are thus always in a process line and must ensure process reliability by maintaining the required flatness tolerances of the straightened belt. It is usually an intermediate production stage. Partial training, on the other hand, is usually a final production stage.
  • a part-classifying machine 1 is shown schematically.
  • the parting machine 1 has an upper straightening roller block 3 and a lower straightening roller block 5.
  • a set of upper straightening rollers 7 are supported, which are supported by support rollers 8.
  • a set of lower straightening rollers 9 are arranged, which are supported by support rollers 10.
  • the lower straightening roller block 5 is fixedly arranged in a machine stand (not shown), while the upper straightening roller block 3 can be adjusted in its position and inclined position and is located in an upper roller mill (cf, supra, pp. 54-55).
  • the setting of the aiming gap by means of a Richtspaltregelung, with the example, deviations from the desired setpoint of the aiming gap can be readjusted.
  • the straightening material in the form of a part 11 is conveyed by the parting machine 1 according to arrow 13. It passes from an inlet side 15 to an outlet side 17.
  • the upper straightening rollers 7 are immersed in the spaces between the lower straightening rollers 9, whereby corresponding alternating bends are produced in the part 11.
  • the depth of immersion of the upper straightening rollers 7 in the lower straightening rollers 9 decreases steadily until a distance is achieved which essentially corresponds to the material thickness of the part 11.
  • the set straightening gap is decisive for the straightening result.
  • the upper straightening roller block 3 according to double arrow 19 is movable in the vertical direction and according to double arrow 21 also about an axis parallel to the axes of the upper and lower straightening rollers axis.
  • the Richtspalts can be realized.
  • a disadvantage of straightening machines is that the straightening gap does not remain constant during straightening, but changes according to the suspension behavior of the mechanical components.
  • the thicker the parts the greater the forces and the more must be dimensioned.
  • the spring travel, in particular with thick parts to be straightened, is a multiple of the theoretical adjustment value required for the rigidity of the components.
  • Fig. 2 Further, A is the cross-sectional area, S the centroid, dA a differential small areal element, and xyz the coordinate system. The latter is also in the 3 and 4 seen.
  • Fig. 3 shows the course of the bending stress and Fig. 4 the bending moment.
  • the largest bending moment transmittable with the rectangular cross-section is, under the condition of an ideal-elastic-plastic material behavior, 1.5 times the already mentioned bending moment, which flow at the cross-sectional edge generated.
  • the flow is here already spread over the entire cross section and the carrying capacity of the cross section is exhausted.
  • the parts to be straightened usually have a cross section depending on the contour and the thickness of the part.
  • the moment of resistance is therefore not constant but changes over the length of the part.
  • the present invention is therefore based on the object of specifying a method for straightening parts in a parting machine, in which the above-mentioned disadvantages are avoided, and with which a significantly improved result is achieved in the directed parts.
  • the alternating bends produced in the machine are strongly dependent on each other, which is in contrast to a single adjustment of the straightening rollers.
  • the block adjustment so to speak, reduces the alternating bends from the inlet to the outlet of the machine relatively evenly.
  • a directional triangle is defined as the smallest unit in a straightening machine.
  • Such a directional triangle shows the Fig. 5 (cf cit., p. 42).
  • the distance between two lower straightening rollers 9 is the value 2t, which is the value of the length of the straightening triangle, wherein the upper straightening roller 7 is exactly symmetrical in the middle, ie at a distance t from the two lower straightening rollers 9.
  • From the Fig. 5 is also the thickness s of the straightening material 11 can be seen and the delivery or immersion depth Z is immersed by the upper straightening roller 7 down between the two lower straightening rollers 9 to produce the alternating bends in the straightening material 11.
  • R indicates the radius of the straightening rolls 7 and 9 and ⁇ n is the bending radius to the neutral fiber of the straightening material.
  • the directional triangle is selected according to the invention as a reference, wherein according to feature h) whose length 2t is displayed on the part to be straightened. Accordingly, reference will be made to the moving pictured part.
  • Fig. 6 is a part to be straightened 11 shown, which has a "bridge-like" contour, namely a rectangular shape with a semicircular central recess with radius R.
  • the part 11 has the thickness s.
  • the directional triangle is in the example case according to Fig. 6 65 mm, so that the dimension 2t is 65 mm.
  • the side length .DELTA.X of a surface part of the part 11 to be straightened is thus selected equal to the dimension 2t, ie the length of the straightening triangle.
  • the initial and final width of the part 11 is 400 mm and its total length, which is measured from right to left, opposite to the direction of passage according to arrow 13 of the part 11 to be straightened by the parting machine, is 800 mm.
  • the width b is measured in each case in the middle of a partial area, which is shown by the dotted lines.
  • the value bs 2 M is then related to the specific straightening machine characteristic value specified for the respective straightening machine, in the example case "35,000". This value results from the maximum for the Straightening machine allowable value for bs 2 and ⁇ F , which is equal to 400 N / mm 2 for the considered straightening machine.
  • the maximum deflection value max X of the straightening machine or the associated roller mill is 0.4.
  • the ratio 240/400 gives the value 0.6.
  • the respective values bs 2 M / 35,000 of the maximum deflection max X and the yield point ratio are then calculated by multiplying the three factors of the offset value resulting from the corresponding width (cf. Fig. 7 ). As can be seen, although these are only relatively small values (data in the table are accurate to 1 / 1,000 mm), the addition of the respective offset value to a basic setting value of the aiming gap leads, surprisingly, to considerably improved guide values.
  • the result of three attempts is in Fig. 8 shown.
  • the tested part had an initial curvature of 12 mm in Experiment 1 and a result of a final curvature of ⁇ 0.4 mm by using the offset.
  • the distances are to be selected such that always an integer number n ⁇ 1 equal partial areas of the side lengths ⁇ X lies within the standard triangle with the length 2t. Due to the thus determined side lengths ⁇ X remains a remnant left over, which is mediated either at the beginning of part and part end, or can be neglected on one side in sufficiently small areas.
  • the size of the faces should be adapted to the complexity of the part to be straightened. In other words, when the contour or material quantity (recesses, holes) changes greatly, correspondingly small side lengths ⁇ X are selected in order to detect the changes in the value bs 2 sufficiently accurately for the calculation of the offset values.
  • the results bs 2 are proportional to the associated width of the partial area. In practical determination by measurement, of course, deviations in the measurement accuracy are present.
  • the widths b and the thicknesses s are particularly easy to specify, if the straightening part was recorded with CAD. To determine the mean of the other values bs 2 M then usually suffices a small additional utility.
  • the determined or calculated curves from the values bs 2 M are now used in conjunction with a mathematical model to determine the setting values, in particular, it is possible to deduce the maximum straightening force from the maximum of the values bs 2 M.
  • the calculation model in addition to the consideration of the suspension behavior of the upper, movable roller mill can also be extended to the consideration of the suspension behavior of the stationary machine stand. Furthermore, the number of mechanical straightening rolls can be taken into account when the part is shorter than the length of the entire straightening unit and the change in the suspension behavior at the inlet and outlet of the straightening material can also be taken into account.
  • the determined offset value of the corresponding partial surface F 1 to F 12 or the directional triangle shown thereon can be assigned and the basic setting of the standard value can be increased with the corresponding offset value, resulting in a significantly improved straightening result leads. Possibly. a force measurement is made, which serves to check the straightening forces and prevents overloading of the machine.
  • the present invention provides a method of straightening parts in a roll leveling machine that is more economical, simpler and more universal using block feed of straightening rolls in comparison with single straightening of straightening rolls. Since many change bends are deliberately generated, the residual stress distribution is more favorable than with small-roll machines. On the other hand, only a few alternating bends are feasible, such as high-strength new materials, so the straightening roller can be adjusted so that a part of the straightening rollers is disengaged.
  • parts also includes very long parts with a special contour or recesses and also unwound from the coil bands, such as Löchbleche. The latter obtained by suitable punching or cutting their holes after unwinding from the coil and are then directed. Due to the ggfls. strong material differences over the length of the workpiece, the inventive method is particularly suitable for straightening these workpieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Wire Processing (AREA)
  • Road Paving Machines (AREA)
EP09780450A 2008-07-10 2009-07-10 Verfahren zum richten von teilen in einer walzenrichtmaschine Active EP2313215B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09780450A EP2313215B1 (de) 2008-07-10 2009-07-10 Verfahren zum richten von teilen in einer walzenrichtmaschine
PL09780450T PL2313215T3 (pl) 2008-07-10 2009-07-10 Sposób prostowania części w prostowarce walcowej

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08012481 2008-07-10
EP09780450A EP2313215B1 (de) 2008-07-10 2009-07-10 Verfahren zum richten von teilen in einer walzenrichtmaschine
PCT/EP2009/058849 WO2010004037A2 (de) 2008-07-10 2009-07-10 Verfahren zum richten von teilen in einer walzenrichtmaschine

Publications (2)

Publication Number Publication Date
EP2313215A2 EP2313215A2 (de) 2011-04-27
EP2313215B1 true EP2313215B1 (de) 2011-11-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09780450A Active EP2313215B1 (de) 2008-07-10 2009-07-10 Verfahren zum richten von teilen in einer walzenrichtmaschine

Country Status (7)

Country Link
US (1) US8789399B2 (zh)
EP (1) EP2313215B1 (zh)
CN (1) CN102099132B (zh)
AT (1) ATE534477T1 (zh)
DK (1) DK2313215T3 (zh)
PL (1) PL2313215T3 (zh)
WO (1) WO2010004037A2 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527774B (zh) * 2012-01-19 2014-07-09 太原科技大学 一种辊式矫直机压下工艺参数动态调整方法
DE102015102271C9 (de) * 2014-02-26 2023-05-25 Arku Maschinenbau Gmbh Verfahren und Vorrichtung zum Richten von metallischen Teilen mit einer Reduzierung von Quetschkanten
US9757781B2 (en) 2015-04-22 2017-09-12 Ching Chung Lai Metal strips straightening machine
EP3184191B1 (de) * 2015-12-21 2020-02-05 Komax Holding AG Richtvorrichtung zum richten von kabeln
CN106391761A (zh) * 2016-11-29 2017-02-15 张家港市鑫华易金属材料有限公司 一种金属板整平装置
CN111633058B (zh) * 2020-05-14 2022-05-31 太原科技大学 一种板材矫直方法及系统
CN115673036B (zh) * 2023-01-03 2023-05-30 广东创昇金属结构有限公司 一种钢板开料前压形校直装置
CN116109879B (zh) * 2023-04-13 2023-07-04 东莞市杰达机械有限公司 整平机的控制系统及其控制方法
CN116921498B (zh) * 2023-09-18 2024-01-09 新乡巴山航空材料有限公司 一种适用于平整高目数金属丝编织网径向打卷的装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1312100B1 (it) * 1999-04-28 2002-04-04 Techint Spa Raddrizzatrice per prodotti ferrosi laminati con spalle apribiliorizzontalmente per il cambio rapido dei rulli.
DE10029387A1 (de) * 2000-06-21 2002-01-03 Sms Demag Ag Profilrichtmaschine
DE10053933B4 (de) 2000-10-31 2005-01-27 Thyssen Krupp Gleistechnik Gmbh Verfahren zum Richten einer Schiene
CN2484131Y (zh) * 2001-03-26 2002-04-03 林正雄 一种多辊式矫直机
CN2510189Y (zh) * 2001-05-17 2002-09-11 上海重型矿山机械公司工程部 五辊双机架渐进矫直拉矫机
ITBO20020604A1 (it) * 2002-09-25 2004-03-26 Schnell Spa Gruppo di correzione finale in apparecchiature per
DE102004041732A1 (de) * 2004-08-28 2006-03-02 Sms Demag Ag Verfahren zum Richten eines Metallbandes und Richtmaschine
DE102008059108A1 (de) 2008-10-16 2010-04-22 Sms Meer Gmbh Verfahren und Vorrichtung zum Richten von Rohren auf einem Expander

Also Published As

Publication number Publication date
ATE534477T1 (de) 2011-12-15
US20110138868A1 (en) 2011-06-16
US8789399B2 (en) 2014-07-29
WO2010004037A3 (de) 2010-08-05
CN102099132A (zh) 2011-06-15
WO2010004037A2 (de) 2010-01-14
DK2313215T3 (da) 2012-02-27
CN102099132B (zh) 2014-07-30
PL2313215T3 (pl) 2012-04-30
EP2313215A2 (de) 2011-04-27

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