EP1401593B1 - Procede de reglage de la course d'une presse-plieuse - Google Patents
Procede de reglage de la course d'une presse-plieuse Download PDFInfo
- Publication number
- EP1401593B1 EP1401593B1 EP02703430A EP02703430A EP1401593B1 EP 1401593 B1 EP1401593 B1 EP 1401593B1 EP 02703430 A EP02703430 A EP 02703430A EP 02703430 A EP02703430 A EP 02703430A EP 1401593 B1 EP1401593 B1 EP 1401593B1
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- EP
- European Patent Office
- Prior art keywords
- punch
- physical parameter
- movement
- piece
- correction
- 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.)
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Classifications
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- 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
Definitions
- the present invention relates to a method for adjusting the stroke of a press brake comprising a fixed apron carrying a die, a movable apron bearing a punch, means for moving the moving apron, said moving means resting on posts.
- measuring rules for measuring the displacement (d) of the movable deck relative to the uprights at least one sensor measuring a physical parameter (p) varying according to the force exerted by said punch on a part of nominal thickness (e) to be bent at a set angle ⁇ c , placed on said die, and an electronic control device controlling the moving of the moving beam between a top dead center and a bottom dead center (BDC), provided with means of acquisition of the measurements of displacement (d) and of the physical parameter (p), and calculation means for correcting the value of said bottom dead center according to the measurements of said displacement (d) and udit physical parameter (p).
- BDC bottom dead center
- Applicant's patent CH 686119 describes a press brake of that type.
- the force experienced by the amounts of a press under the effect of the thrust of the cylinders causes a bending of the amounts that can result in a deformation of the frame, up to 1-2 mm.
- This flexion changes the penetration depth of the punch into the die, which creates an error in the bending angle obtained on the part to to fold.
- control method determines, using pressure sensors, the force undergone by each of the amounts under the action means of Moving the moving deck, we compare each of the values obtained with a predetermined diagram establishing the relationship between the force suffered by the respective amount and the flexion of the amount, and the stroke of the slider is increased, in order to compensate for the deformations of the press.
- the nominal thickness of the piece is one of parameters introduced into the control electronics of the press brake when setting the stroke.
- the actual thickness e r of the sheet must be taken into account at each folding operation.
- sheet steel manufacturers supply sheets whose actual thickness has variations of up to ⁇ 10% of the nominal value (e) of the thickness. If a sheet of 2 mm nominal thickness, for example, is to be bent at 90 ° in a 12 mm V-shaped opening, a variation of the thickness of 10% will induce, if not corrected, a variation of the folding angle of 2 °; without proper correction, the bending angle could vary between 88 ° and 92 °.
- Patent application JP 02030327 proposes to determine the actual thickness of the piece to bend by detection concomitant with the increase of the hydraulic pressure by a first sensor and the position of the punch by a second sensor.
- Patent Applications JP 051138254, JP 10052800 and JP 09136116 propose to determine the thickness of the piece to bend by detecting a variation in speed of descent from moving apron occurring at the moment the punch enters contact with this piece.
- US Patent 4,550,586 proposes to determine the thickness the piece to be bent by detecting the loss of contact of this piece with sensors placed on the surface of the fixed deck, the loss of contact following the beginning of the process of folding.
- US Pat. No. 4,408,471 proposes to record the variation of the force exerted by the punch on the workpiece as a function of its displacement, to deduce the modulus of elasticity of the workpiece from the slope of the workpiece. initial rectilinear portion of the force / displacement curve and, on the basis of a modeling of the behavior of the part in the zone of plastic deformation, to extrapolate from this curve the maximum point of displacement of the punch which will induce, after elastic return a folding angle having the set value ⁇ c .
- This method has the advantage of taking into account the actual modulus of elasticity of the piece being bent.
- the model to be used to calculate the maximum displacement of the punch is not the same.
- the correctness of the correction of the bottom dead center therefore depends on the adequacy of the chosen model as an approximation of the behavior of the real part.
- US Patent 4,511,976 discloses a method in which a electronic control device records the variation of the angle ⁇ between the sheet and the top of the matrix, measured by a position sensor which follows the deformation of the sheet, placed on the fixed deck, and the variation of the force punch support.
- the initial linear part of the curve F / ⁇ calculates the modulus of elasticity of the sample and, by extrapolation of the curve in the deformation zone plastic, the controller calculates the maximum angle necessary to obtain the set value of the angle of folding in the absence of load.
- the measurement of the angle ⁇ is imprecise and unreliable, the sensors commonly used for this type measurement gradually fading, and must be recalibrated for each matrix.
- the object of the present invention is to propose a method of adjusting the stroke of a press brake which compensates for the springback effect of the piece, without present the disadvantages of previous methods.
- This object is achieved by a method of the defined input type in which the difference in thickness between the actual thickness (e r ) of the workpiece and the nominal thickness (e) of the workpiece is calculated by comparing the actual position of the displacement of the punch at which a predetermined variation ⁇ p of the physical parameter (p) occurs with the theoretical position of said displacement where this variation ⁇ p should occur, in which the electronic control device processes the measurements of said displacement (d) and said parameter during the phase of plastic deformation of the part being folded, so as to compare them and to determine their deviations from the data recorded during a reference folding operation which made it possible to obtain the value of set point ⁇ c of the bending angle after releasing the force exerted by the punch and determining a reference value of the spring effect correction, and in wherein the electronic control device calculates a low dead center correction as a function of said reference correction of the spring effect and said deviations from the data of the reference record.
- the comparison with the reference record is performed by calculating the instantaneous angle of folding ⁇ under load of the part, as a function of the variation of said displacement (d) following said variation ⁇ p of the parameter physical, taking into account said thickness difference (e r - e) and the geometrical parameters of the punch and the die.
- the pressing force (F) of the punch on the workpiece is calculated by means of the value of the physical parameter (p), the succession of values of the instantaneous angle of folding / support force ( ⁇ , F) is acquired and compared to a reference curve ( ⁇ , F) ref pre-recorded during a reference folding operation that made it possible to obtain the set value ⁇ c of the folding angle after releasing the force exerted by the punch, and the electronic control device calculates a correction of the bottom dead center as a function of the difference between the pairs ( ⁇ , F) and the reference curve ( ⁇ , F) ref .
- the method according to the invention avoids the use of unreliable angle measuring devices.
- the process according to the invention avoids errors due to the use of models inappropriate theoretical.
- the control device preferably performs a second correction of the bottom dead center taking into account the difference of thickness thus determined.
- the speed of the movement movement is reduced to a speed Measurement acquisition (vam), less than the speed of pre-determined folding (VP), when the punch is at a predetermined distance from the theoretical pinch level of the sheet metal, this distance being greater than the tolerance of thickness ⁇ e of manufacture of said sheet, and the speed of movement movement increases again until said bending speed after detection of variation predetermined ⁇ p of said physical parameter (p).
- vam speed Measurement acquisition
- VP speed of pre-determined folding
- the variation of the physical parameter (p) makes it possible to to determine the mechanical stresses to which the press, and therefore its deformation, and this on the basis of of data relating to the tool itself, stored in memory.
- This measure of the constraints can be used to calculate a third correction, representative of the deformation of the press itself under the effect of these constraints.
- the press brake shown in FIG. movable apron 1 supporting a punch 2 and a fixed apron 3 supporting a matrix 4.
- Moving the moving deck is carried out using two hydraulic cylinders 5, 5 ', mounted on two respective uprights 6, 6 'integral with the apron inferior.
- the machine is equipped with two measuring rules 9 and 9 ', mounted on each of its sides, in the fold axis, to measure the movement of the movable deck by compared to the respective amounts 6 and 6 '.
- the folding movement is controlled by an electronic control device 7.
- the control device electronics is arranged to process the signals a1 and a2 respectively from each of the pressure sensors and also treat two signals b1 and b2 from the rules of measure 9 and 9 'and representative of the movements of the apron mobile relative to each of the amounts 6 and 6 '.
- the signals b1 and a1 separately the signals b2 and a2 on the other hand, in particular for to take into account possible defects of homogeneity of the piece to bending, and performing correction calculations and stroke compensations of the movable apron separately at the level the left amount and the right amount.
- the skilled person will readily understand that the following description also illustrates well the calculations and race compensation for each of the two amounts taken separately, their respective signals subject of separate processing, that the calculations and compensations for signals averaged between the left amount and the right amount.
- the bearing force is zero. It can be represented by the pressure (p) measured by the sensors 8, 8 ', which has an initial value that can be measured and zeroed by calculation.
- the variation of the bearing force is linear during the elastic deformation of the sheet.
- the slope of the linear part of the curve p / d or of the curve F / ⁇ derived from it by mathematical transformation makes it possible to calculate the modulus of elasticity.
- the position of the moving deck to which corresponds the beginning of the variation of the physical parameter (p) makes it possible to calculate the actual thickness e r of the sheet. To determine this actual thickness more precisely, the descent of the deck can be controlled by the electronic control device according to a variant described below and illustrated by FIG.
- FIG. 3 shows, on the same diagram, on the one hand the speed of descent V of the moving apron, which is preprogrammed, and, at the same time, the variation of the hydraulic pressure P measured at the level of the pressure sensors 8, 8 ', depending on the displacement (d).
- the descent is carried out initially at a high approach speed V1, until a predetermined distance from the level where the punch theoretically pinches the sheet, said safety distance ds.
- the speed is reduced, for example to a speed close to the folding speed VP, the latter being imposed by the composition and the nominal thickness of the sheet as well as by the characteristics of the desired folding, angle of Folding and tool profile.
- This speed can typically be of the order of 10 mm / s.
- the actual thickness e r of the sheet will be in the range e ⁇ ⁇ e.
- the speed of descent is reduced to a measurement acquisition speed, vam, which is order of 1/2 to 1/10 of the folding speed VP, typically 1 mm / s - 5 mm / s.
- the pressure sensors 8 and 8 ' measure the hydraulic pressure P at each of the jacks 5 and 5 'and the control device 7 records it and Trafficking.
- the variation of the pressure is represented (in arbitrary units) in Figure 3.
- the reduction of speed of descent of the moving deck, speed approach V1 at the folding speed VP, is accompanied by a slight concomitant pressure increase dp1, no significant with regard to folding.
- a measuring cycle of the sensor + device control electronics lasts about 10 ms: in this way, while the deck goes down to a folding speed VP of the order of 10 mm / s, a measurement of the pressure is carried out every 0.1 mm; when the descent speed is reduced to a measurement acquisition speed vam of 1 mm / s, a measurement pressure is performed every 0.01 mm.
- the device so is able to very accurately determine the when the pressure P increases again by an amount ⁇ p, representative of the contacting of the punch with the face top of the sheet.
- ⁇ p representative of the contacting of the punch with the face top of the sheet.
- the comparison of the entry level in contact with the level theoretical pinch determines the difference between thickness actual and nominal of the sheet and the control device 7 immediately recalculate a bottom dead center.
- the descent of the apron mobile can be continued at the folding speed VP.
- the pressure measured at the sensors 8, 8 After contact, the pressure measured at the sensors 8, 8 'increases almost linearly up to reach a PP value, bending pressure, which can to reach the order of magnitude of 300 bars; beyond is happening the plastic deformation of the part, the curve (d, P) curls down, then pressure P decreases slightly and linearly.
- the value of the pressure in this phase of plastic deformation determines the deformation of the uprights and other fixed parts of the press.
- the electronic device 7 compares the value of the pressure during the plastic deformation with an abacus specific to this press brake, recorded in memory, establishing the relationship between this value, the deformation of the fixed parts of the press and the penetration error of the punch that in result, in the absence of correction.
- the punch stroke that is, the position of the bottom dead center (BDC) is corrected Consequently.
- curve 10 becomes almost linear beyond its maximum curve area 11, 12.
- the method of calculating the spring effect compensation is based on the comparison of the curve 10, representing the values ( ⁇ , F) calculated as the progress of the folding operation with a reference curve 20, representing the values ( ⁇ , F) ref stored in memory when a folding of a sheet of nominal thickness e and length L ref .
- This reference curve 20, shown in dashed lines in FIG. 4, notably gives the maximum value of the instantaneous angle under load ( ⁇ ) max ref , having made it possible to obtain the setpoint value ( ⁇ ) c after the phase releasing the pressing force exerted by the punch on the workpiece, illustrated by the straight segment 21.
- curves ( ⁇ , F) recorded during repetitive bends are substantially parallel to each other in the quasi-linear portion of the plastic deformation zone; in other words, they have a difference ⁇ f that varies practically not as a function of ⁇ between the points P 3 and P 4 .
- the modulus of elasticity could also be determined from the slope between two points P1 and P2 of the part linear curve ( ⁇ , F) corresponding to the deformation elastic.
- FIG. 4 also shows that if the curve 10 is extrapolated, its intersection with the line 21, representative of the spring effect, gives the bend angle ⁇ max under stress for the sample being bent which allows to obtain the set value ⁇ c in the absence of constraint.
- ⁇ max is greater than ( ⁇ max ) ref if the folding curve is above the reference curve; ⁇ max is less than ( ⁇ max ) ref in the opposite case.
- the measurements (p, d) are acquired, digitized and converted into pairs ( ⁇ , F) by the electronic control device (7).
- the calculation of the correction of ( ⁇ max ) ref is carried out without graphical extrapolation: a plurality of values of F between the points P 3 and P 4 obtained as above are first corrected by a factor L / L ref . Then, the difference ⁇ f between the curve portion 10 situated between P 3 and P 4 and the curve 20 is determined from the values thus corrected by a least squares method. Then, the electronic control device calculates the corrected value of ⁇ max from ( ⁇ max ) ref and ⁇ f.
- We can use the relation: ( ⁇ max ) ref - ⁇ max ⁇ f / tg ⁇
- the angle ⁇ between the line 21 and the abscissa axis is obtained by recording the reference curve 20 and preprogrammed for the folding operation.
- the electronic control device calculates the corrected value of the bottom dead point from the relationships indicated above between ⁇ , d and P.
- this low dead center correction calculation is performed during folding, well before the punch approaches bottom dead center, based on measurements of pairs (p, d) made in a range. displacement, namely between points P 3 and P 4 , which is easy to determine.
- the correction of the bottom dead center which compensates the deformation of the press is carried out simultaneously.
- the correction that compensates for variations in the thickness of the part is already done at this time.
- the reference curve can be obtained by means of a first folding test as shown in FIG. 5.
- FIG. 5 represents the plastic deformation zone of the test intended to provide the reference values of the effect correction. of spring.
- the folding represented by the curve 200 is conducted until reaching the set point of the folding angle ⁇ c , but under stress.
- the punch is then slightly raised, so that the bending angle of the piece decreases under the effect of spring.
- This process is represented by the segment 201 which intersects the abscissa axis at a point ⁇ 1.
- the punch is then lowered so as to continue the bending of the part to a bending angle under stress ⁇ c + A.
- the bearing force increases along the curve 202, first linearly, then along an arc of curve corresponding to the end of the plastic deformation. Then the punch is raised again and the support force decreases along the right segment 203; it is verified that the folding angle returns to the value ⁇ c in the absence of stress and that the segment 203 is parallel to the segment 201.
- Figure 5 also shows a subsequent folding using data from the reference fold.
- the corresponding ordinate B of the reference curve 200 is determined and the difference B 'between the ordinate of the point P 5 and the corresponding ordinate B of the reference curve.
- the whole of the angular correction of spring effect applicable to the folding operation illustrated by the curve 100 is therefore A + A '.
- the control electronics converts this value into a low dead center correction by means of the algebraic expressions indicated above.
- the whole signal processing can be performed by comparing the pairs (d, p) with a curve (d, p) ref recorded during a first fold, that is to say a curve similar to the right half of the curve (d, P) of Figure 3, without operating the mathematical transformation (d, p) ⁇ ( ⁇ , F).
- a curve (d, p) ref recorded during a first fold that is to say a curve similar to the right half of the curve (d, P) of Figure 3
- the mathematical transformation (d, p) ⁇ ( ⁇ , F) if the reference curve is recorded on a first machine, and the following bends are made on another machine, this transformation is necessary to be able to make the comparisons and corrections described above.
- the reference curve can be data stored in memory, obtained during a previous work.
- the electronic control device searches in memory for the existence of a reference curve for identical bending parameters and material.
- the research in memory relates in particular to the setpoint angle ⁇ c , the combination of tools and the physical parameters of the material (thickness, strength of the material).
- a set of reference curves can constitute a database. This can be accessed online at a plurality of users, either in the form of a database of public access data, either as part of a private network.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Description
- la figure 1 est une vue schématique illustrant l'effet d'une variation d'épaisseur d'une tôle sur le point de contact poinçon-tôle;
- la figure 2 est une vue schématique de face d'une presse-plieuse munie de capteurs de pression et d'une électronique de commande;
- la figure 3 montre deux courbes, illustrant simultanément la descente du poinçon et la variation du paramètre (p) en fonction du déplacement de ce poinçon;
- la figure 4 montre deux courbes représentant la variation de la force d'appui F du poinçon en fonction de l'angle de pliage, dans un système d'axes de coordonnées (α, F);
- la figure 5 est une vue partielle de deux courbes représentant la variation de la force d'appui du poinçon en fonction de l'angle de pliage dans un système d'axes de coordonnées (α, F).
- V1
- désigne l'ouverture de la matrice
- Am
- désigne l'angle de la matrice
- Rm
- désigne le rayon de courbure de la matrice
- Rp
- désigne le rayon du poinçon
- er
- désigne l'épaisseur réelle de la pièce à plier
- d0
- désigne le déplacement du tablier au moment de l'entrée en contact du poinçon avec la pièce
- P
- désigne la pénétration du poinçon dans la matrice
Claims (9)
- Procédé de réglage de la course d'une presse-plieuse comportant un tablier mobile (1) portant un poinçon (2), un tablier fixe (3) portant une matrice (4), des moyens de déplacement (5, 5') du tablier mobile, lesdits moyens de déplacement s'appuyant sur des montants (6, 6') solidaires du tablier fixe, des règles de mesure (9, 9') pour la mesure du déplacement (d) du tablier mobile par rapport aux montants, au moins un capteur (8, 8') mesurant un paramètre physique (p) variant en fonction de la force exercée par ledit poinçon sur une pièce à plier placée sur ladite matrice, et un dispositif électronique de commande (7) commandant le déplacement du tablier mobile entre un point mort haut et un point mort bas (BDC), pourvu de moyens d'acquisition des mesures du déplacement (d) et du paramètre physique (p), et de moyens de calcul pour corriger la valeur du dit point mort bas en fonction des mesures du dit déplacement et du dit paramètre physique, caractérisé en ce que la différence d'épaisseur entre l'épaisseur réelle de la pièce et l'épaisseur nominale (e) de la pièce est calculée en comparant la position réelle du déplacement du poinçon à laquelle se produit une variation prédéterminée Δp dudit paramètre physique (p) avec la position théorique dudit déplacement où cette variation Δp devrait se produire, en ce que le dispositif électronique de commande traite les mesures dudit déplacement (d) et dudit paramètre physique (p), pendant la phase de déformation plastique de la pièce en cours de pliage, de façon à les comparer et de déterminer leurs écarts avec les données enregistrées lors d'une opération de pliage de référence ayant permis d'obtenir la valeur de consigne αc de l'angle de pliage après relâchement de la force exercée par le poinçon et de déterminer une valeur de référence de la correction d'effet de ressort, et en ce que le dispositif électronique de commande calcule une correction du point mort bas en fonction de ladite correction de référence de l'effet de ressort et desdits écarts avec les données de l'enregistrement de référence.
- Procédé selon la revendication 1, caractérisé en ce que l'angle instantané de pliage α sous charge de la pièce est calculé en fonction de la variation dudit déplacement d, en tenant compte de ladite différence d'épaisseur (er - e) et des paramètres géométriques du poinçon et de la matrice, que la force d'appui (F) du poinçon sur la pièce est calculée au moyen de la valeur du paramètre physique (p), que la succession des valeurs du couple de paramètres angle instantané de pliage/force d'appui (α, F) est acquise et comparée à une courbe de référence (α, F)réf préenregistrée lors d'une opération de pliage du même matériau ayant permis d'obtenir la valeur de consigne αc de l'angle de pliage après relâchement de la force exercée par le poinçon, et que ledit dispositif électronique de commande (7) calcule une correction (A') de la valeur maximale de l'angle instantané sous charge (αmax)réf déterminé lors du pliage de référence en fonction de l'écart entre le couple (α, f) issu de la mesure et la courbe de référence (α, f)réf. dans la zone de déformation plastique.
- Procédé selon la revendication 2, caractérisé en ce que le dispositif électronique de commande (7) calcule une correction du point mort bas (BDC) en fonction de ladite correction (A') de la valeur maximale de l'angle instantané sous charge (αmax)réf.
- Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le dispositif électronique de commande 7 calcule une deuxième correction du point mort bas (BDC) tenant compte de ladite différence d'épaisseur entre l'épaisseur réelle de la pièce et l'épaisseur nominale (e) de la pièce.
- Procédé selon la revendication 3, caractérisé en ce que la vitesse du mouvement de déplacement du tablier mobile est réduite à une vitesse d'acquisition de mesure (vam), inférieure à une vitesse de pliage (VP) prédéterminée, lorsque le poinçon est à une distance prédéterminée du niveau théorique de pincement de la tôle supérieure à la tolérance d'épaisseur Δe de fabrication due ladite tôle, et que la vitesse du mouvement de déplacement augmente jusqu'à ladite vitesse de pliage après détection de ladite variation prédéterminée Δp dudit paramètre physique (p).
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif électronique de commande (7) compare les valeurs mesurées dudit paramètre physique (p) avec un abaque préenregistré établissant la relation entre ledit paramètre physique et la déformation des parties fixes de la presse et calcule une troisième correction du point mort bas (BDC) en tenant compte de ladite déformation.
- Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ledit paramètre physique est la contrainte mécanique qu'un vérin exerce sur le tablier mobile mesuré à ce niveau par une jauge de contrainte.
- Procédé selon l'une quelconque des revendications 1 à 6 mis en oeuvre dans une presse-plieuse dont les moyens de déplacement comportent deux vérins hydrauliques associés respectivement à l'un des deux montants et un capteur (8, 8') de pression associé à chaque vérin, caractérisé en ce que ledit paramètre physique est la moyenne entre les pressions hydrauliques mesurées par lesdits capteurs (8, 8').
- Procédé selon l'une quelconque des revendications 1 à 6 mis en oeuvre dans une presse-plieuse dont les moyens de déplacement comportent deux vérins hydrauliques associés respectivement à l'un des deux montants et un capteur (8, 8') de pression associé à chaque vérin, caractérisé en ce que le réglage de la course est effectué pour chaque montant, indépendemment de l'autre, et que ledit paramètre physique est la pression mesurée respectivement par chacun desdits capteurs (8, 8').
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK02703430T DK1401593T3 (da) | 2001-03-16 | 2002-03-15 | Fremgangsmåde til regulering af en kantpresses slag |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4902001 | 2001-03-16 | ||
CH4902001 | 2001-03-16 | ||
PCT/CH2002/000154 WO2002074463A1 (fr) | 2001-03-16 | 2002-03-15 | Procede de reglage de la course d'une presse-plieuse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1401593A1 EP1401593A1 (fr) | 2004-03-31 |
EP1401593B1 true EP1401593B1 (fr) | 2005-06-08 |
Family
ID=29783953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP02703430A Expired - Lifetime EP1401593B1 (fr) | 2001-03-16 | 2002-03-15 | Procede de reglage de la course d'une presse-plieuse |
Country Status (8)
Country | Link |
---|---|
US (1) | US7079919B2 (fr) |
EP (1) | EP1401593B1 (fr) |
JP (1) | JP4050619B2 (fr) |
CN (1) | CN1286590C (fr) |
AT (1) | ATE297272T1 (fr) |
DE (1) | DE60204568T2 (fr) |
ES (1) | ES2244749T3 (fr) |
WO (1) | WO2002074463A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US7607329B2 (en) | 2005-03-17 | 2009-10-27 | Siemens Aktiengesellschaft | Method for free bending |
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ITPR20040088A1 (it) * | 2004-12-13 | 2005-03-13 | Schiavi Macchine Ind Spa | Metodo e dispositivo per la determinazione dello spessore o del ritorno elastico di un pezzo piegato con una pressa piegatrice. |
JP4878806B2 (ja) * | 2005-10-11 | 2012-02-15 | 株式会社アマダ | ダイ金型,折曲げ加工方法及び装置 |
AT505743B1 (de) * | 2007-03-30 | 2009-07-15 | Trumpf Maschinen Austria Gmbh | Verfahren zur festlegung eines einstellparameterwerts einer biegepresse |
CN102445921A (zh) * | 2010-09-30 | 2012-05-09 | 成都飞机工业(集团)有限责任公司 | 一种壁板多道次滚弯加载轨迹设计与数控代码生成方法 |
JP6103741B2 (ja) * | 2012-05-11 | 2017-03-29 | 株式会社ホリカワ工業 | 金型及び折り曲げ加工方法 |
ITTV20120125A1 (it) | 2012-07-06 | 2014-01-07 | Gasparini Ind S R L | Dispositivo per la bombatura in presse piegatrici. |
JP6200274B2 (ja) | 2012-10-23 | 2017-09-20 | 株式会社アマダホールディングス | 加工機におけるパンチの最終デプス検出装置および最終デプス検出方法 |
AT512892B1 (de) * | 2012-10-25 | 2013-12-15 | Trumpf Maschinen Austria Gmbh | Anordnung mit einer Biegepresse und einem Roboter sowie Verfahren zur Herstellung eines Biegeteils |
CN103736775A (zh) * | 2013-09-27 | 2014-04-23 | 广东工业大学 | 一种水火弯板成型数字胎架检测平台及方法 |
JP6243752B2 (ja) * | 2014-02-25 | 2017-12-06 | 株式会社アマダホールディングス | プレスブレーキ |
CN104392053A (zh) * | 2014-11-29 | 2015-03-04 | 江西洪都航空工业集团有限责任公司 | 一种蒙皮滚弯零件截面曲率分析方法 |
CN110198831B (zh) * | 2017-02-06 | 2022-02-22 | 日本精工株式会社 | 框架构造、加工装置、部件的制造方法、滚动轴承的制造方法、车辆的制造方法、机械的制造方法以及冲压装置 |
CN111377598B (zh) * | 2018-12-28 | 2023-08-04 | 扬明光学股份有限公司 | 模造镜片的制造设备及方法 |
IT201900014481A1 (it) * | 2019-08-09 | 2021-02-09 | Rolleri S P A | Utensile per una pressa piegatrice e apparato per monitorare la sollecitazione esercitata da detto utensile |
EP3839676A1 (fr) | 2019-12-16 | 2021-06-23 | Bystronic Laser AG | Compensation de l'épaisseur dans un procédé de découpe et de pliage |
CN113458489B (zh) * | 2021-07-09 | 2022-05-27 | 浙江工贸职业技术学院 | 一种花键拉刀与圆孔拉刀的自动化校正装置及方法 |
CN114147109B (zh) * | 2021-09-16 | 2022-07-05 | 深圳市明鑫工业材料有限公司 | 一种可自动控制调节的金属表面冲压加工工艺 |
CN113976680B (zh) * | 2021-10-18 | 2024-03-29 | 芜湖银鹤机械制造有限公司 | 后挡板误差报警的数控折弯机监控系统 |
CN118403935A (zh) * | 2024-07-01 | 2024-07-30 | 南通虎神金属制品有限公司 | 一种铜合金材料的金属加工控制方法及系统 |
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CH686119A5 (fr) | 1991-10-31 | 1996-01-15 | Beyeler Raskin Sa | Procede de reglage de la course du coulisseau d'une presse-plieuse et presse-plieuse comportant un dispositif de reglage pour la mise en oeuvre du procede. |
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WO1998014286A1 (fr) * | 1996-10-03 | 1998-04-09 | Komatsu Ltd. | Procede de cintrage et dispositif de cintrage pour machine a cintrer |
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AT411164B (de) * | 2000-08-16 | 2003-10-27 | Trumpf Maschinen Austria Gmbh | Verfahren zum betrieb einer biegepresse und biegepresse, insbesondere abkantpresse |
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2002
- 2002-03-15 ES ES02703430T patent/ES2244749T3/es not_active Expired - Lifetime
- 2002-03-15 AT AT02703430T patent/ATE297272T1/de active
- 2002-03-15 JP JP2002573164A patent/JP4050619B2/ja not_active Expired - Lifetime
- 2002-03-15 EP EP02703430A patent/EP1401593B1/fr not_active Expired - Lifetime
- 2002-03-15 CN CNB028065581A patent/CN1286590C/zh not_active Expired - Lifetime
- 2002-03-15 WO PCT/CH2002/000154 patent/WO2002074463A1/fr active IP Right Grant
- 2002-03-15 DE DE60204568T patent/DE60204568T2/de not_active Expired - Lifetime
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7607329B2 (en) | 2005-03-17 | 2009-10-27 | Siemens Aktiengesellschaft | Method for free bending |
Also Published As
Publication number | Publication date |
---|---|
ATE297272T1 (de) | 2005-06-15 |
ES2244749T3 (es) | 2005-12-16 |
CN1496289A (zh) | 2004-05-12 |
US20040111177A1 (en) | 2004-06-10 |
US7079919B2 (en) | 2006-07-18 |
JP2004520939A (ja) | 2004-07-15 |
DE60204568D1 (de) | 2005-07-14 |
WO2002074463A1 (fr) | 2002-09-26 |
DE60204568T2 (de) | 2006-05-24 |
EP1401593A1 (fr) | 2004-03-31 |
JP4050619B2 (ja) | 2008-02-20 |
CN1286590C (zh) | 2006-11-29 |
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