EP3088098A1 - Shaping by stamping with negative-angle slider - Google Patents
Shaping by stamping with negative-angle slider Download PDFInfo
- Publication number
- EP3088098A1 EP3088098A1 EP16162993.6A EP16162993A EP3088098A1 EP 3088098 A1 EP3088098 A1 EP 3088098A1 EP 16162993 A EP16162993 A EP 16162993A EP 3088098 A1 EP3088098 A1 EP 3088098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slider
- tool
- angle
- frame
- stamping
- 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.)
- Withdrawn
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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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/32—Perforating, i.e. punching holes in other articles of special shape
- B21D28/325—Perforating, i.e. punching holes in other articles of special shape using cam or wedge mechanisms, e.g. aerial cams
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
- B21D19/084—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with linear cams, e.g. aerial cams
Definitions
- the invention relates to the field of shaping of sheet metal elements, in particular of a motor vehicle body. More particularly, the invention relates to the field of forming stamping by means of a stamping press.
- the figure 1 shows two known configurations of such tooling.
- the image on the left shows a first configuration 1 where the direction of sliding of the slider 4 on the upper frame 2 is horizontal.
- the slider 4 contacts the cam 6 on the lower frame (not shown) and slides along it.
- the direction of sliding of the slider on the cam is inclined and corresponds to the working direction of the tool 10 for forming the stamping 8, said tool 10 being placed on the slider 4.
- the image on the right shows a second configuration 1 'where the sliding direction of the slider 4' on the upper frame 2 'is inclined upwards relative to the horizontal.
- the sliding direction of the slider 4 'on the cam 6' defines the working direction of the tool 10 'relative to the stamping 8'.
- the latter is less inclined relative to the horizontal than in the first configuration. This is due to the inclination of the sliding direction of the slider 4 'on the upper frame 2'.
- the angle ⁇ (of the direction of the slider slides) must always be between 0 ° and 40 °, that is to say be zero or positive, to allow work directions significantly inclined relative to the vertical. Vertical working direction does not require sliders.
- the published patent document FR 2 991 204 A1 shows for this purpose a stamping tool comprising a slide whose slide direction on the upper frame is horizontal, that is to say has a zero inclination angle.
- the published patent document US 2002/0121122 A1 also shows a stamping tool comprising a slider whose direction of the rails on the upper frame forms an angle with the horizontal, measured in the working direction of the slider, which is positive. This means that the slide moves upwards relative to the upper frame during the working phase, that is to say, shaping the stamped with the slide.
- the object of the invention is to provide more freedom in the choice of working directions of a slide on a press press tooling.
- the invention relates to a forming tool of a stamping with a stamping press, comprising: an upper frame with a slide; a frame lower with a cam adapted to cooperate by sliding with the slider during a combination of the upper and lower frames, for moving said slider to the stamped to perform a shaping operation; remarkable in that the direction of sliding of the slider on the upper frame forms an angle ⁇ with the horizontal, measured in the working direction of said slider when said frame is in the working position on the press, which is greater than 0 ° and directed downwardly so that the slider descends relative to said frame when bringing together the upper and lower frames.
- the cam is advantageously fixed with the lower frame.
- the slide may have a general shape of triangle whose two sides form the sliding directions on the upper frame and sliding on the cam.
- a tool may be mounted on the slide, the tool may be in particular a cutting punch and / or deformation, or a cutting blade.
- the cam has a direction of sliding with the slider, which forms an angle ⁇ with the horizontal, measured in the working direction of the slider when the lower frame is in the working position on the press , between 55 ° and 90 ° and directed downwards.
- the angle ⁇ is less than 35 °, preferably less than 25 °, more preferably less than 15 °.
- the angle y between the sliding direction of the slide on the upper frame and the sliding direction of said slide on the cam is between 50 ° and 80 °, preferably between 50 ° and 70 ° more preferably between 55 ° and 65 °.
- the angle ⁇ is equal to the angle ⁇ minus the angle ⁇ .
- the lower frame comprises a surface for receiving the stamping, said surface comprises an edge adapted to cooperate with a tool attached to the slide.
- the tool is a cutting blade of an edge of the stamping.
- the upper frame comprises a presser slidably mounted against an elastic force on said frame, said presser being able to exert pressure on the stamping during the approach of the lower and upper frames.
- the subject of the invention is also a process for forming a stamped article by means of a forming tool mounted on a stamping press, which is remarkable in that the tooling is in accordance with the invention and comprises a step of approaching the upper and lower frames for the forming of the stamped, the slider down from the upper frame during said approximation.
- the slider cuts an edge of the stamping during the step of bringing the upper and lower frames closer together.
- the measures of the invention are interesting in that they make it possible to provide working directions of a slider less inclined relative to the horizontal while maintaining a kinematics and a distribution of efforts similar to those common in conventional sliders. with sliding angles on the frame zero or positive.
- the figure 3 schematically illustrates the orientations of the slide directions and work of a shaping tool slide according to the invention.
- the tooling comprises an upper frame with a slide slidably mounted on said frame by means of slideways, in a direction represented by the arrow 112 forming a negative angle ⁇ with the horizontal.
- the tooling also comprises a lower frame with a cam having a sliding surface with the slide, whose orientation is represented by the arrow 114 forming an angle ⁇ with the horizontal.
- the orientation of the arrows 112 and 114 express the working directions of the slider, that is to say the directions of relative and absolute displacement, respectively, of the slider during its displacement to the stamped for its shaping.
- the shaping can be a cut and / or a folding.
- the angles ⁇ and ⁇ are thus measured in the direction of work of the directions in question.
- the angle ⁇ between the two directions 112 and 114 is advantageously between 50 ° and 80 °, preferably between 50 ° and 70 °, more preferably between 55 ° and 65 °, in order to limit the stress components unfavorable to the movement of the slide.
- the fact of providing a negative angle ⁇ , that is to say located below the horizontal, has the effect that the force, directed vertically downwards, transmitted by the upper frame to the slide will have a component oriented in the sliding direction 112 and directed away from the working direction of the slide.
- This configuration thus makes it possible to obtain working directions between 55 ° and 90 °, that is to say closer to the vertical, while maintaining a kinematics compatible with the rules of good practice, precisely the kinematics of the sliders. with a zero or positive angle ⁇ .
- FIGS. 4 to 6 illustrate the kinematics of a formatting tool according to the invention.
- the figure 4 illustrates the tool 101, more particularly a detail of the tool 101 showing the slider 104 on the upper frame 102 at the beginning of the shaping of the stamping 108.
- the latter is disposed on a punch 122 with a door edge on the other hand to be cut by the blade 110 fixed to the slide 104.
- the latter is slidably mounted on the upper frame 102 by means of the slideways 118.
- the sliding direction of these slides is represented by the arrow 112 which corresponds to at arrow 112 of the figure 3 .
- the slider 104 comprises a sliding surface 120 with the cam 106.
- the contact surface thereof with the sliding surface 120 of the slider is represented by the arrow 114 which corresponds to the arrow 114 of the slider. figure 3 .
- the cam 106 and the punch 122 are advantageously fixed rigidly to the lower frame 116.
- the upper frame 102 is in the high position, namely that the slider 104 is not yet in contact with the cam 106.
- the figure 5 illustrates tooling 101 of the figure 4 at a later stage of forming the stamp.
- the upper frame 102 has begun its downward movement to the point that the slider 104, more precisely its sliding surface 120 with the cam 104, is in contact with the cam and starts a sliding movement thereon.
- the figure 6 illustrates tooling 101 Figures 4 and 5 at a later stage than that of the figure 5 that is, where the upper frame 102 continues its downward movement and causes the slide 106 to move along the slideways 118 and along the cam 106 toward the embossment 110.
- the cutting blade 108 has sheared the edge of It can be observed that the direction of the cam 106 is essentially parallel to the lateral face of the cutting blade 110.
Abstract
L'invention a trait à un outillage (101) de mise à forme d'un embouti (108) avec une presse d'emboutissage, comprenant un bâti supérieur (102) avec un coulisseau (104), et un bâti inférieur (116) avec une came (106) apte à coopérer par glissement avec le coulisseau (104) lors d'un rapprochement des bâtis supérieur (102) et inférieur (116), en vue de déplacer ledit coulisseau (104) vers l'embouti (108) pour réaliser une opération de mise à forme. La direction de coulissement du coulisseau (104) sur le bâti supérieur (102) forme un angle ² avec l'horizontale qui est supérieur à 0° et dirigé vers le bas de manière à ce que le coulisseau (104) descende par rapport audit bâti (102) lors du rapprochement des bâtis supérieur (102) et inférieur (116).A tool (101) for forming a stamp (108) with a stamping press, comprising an upper frame (102) with a slider (104), and a lower frame (116) with a cam (106) slidably engageable with the slider (104) when the upper (102) and lower (116) frames are brought together to move said slider (104) towards the embossed (108) to perform a shaping operation. The direction of sliding of the slider (104) on the upper frame (102) forms an angle θ with the horizontal which is greater than 0 ° and directed downwardly so that the slider (104) descends relative to said frame (102) when bringing the upper (102) and lower (116) frames closer together.
Description
L'invention a trait au domaine de la mise à forme d'éléments de tôle, notamment de carrosserie de véhicule automobile. Plus particulièrement, l'invention a trait au domaine de la mise à forme d'embouti au moyen d'une presse d'emboutissage.The invention relates to the field of shaping of sheet metal elements, in particular of a motor vehicle body. More particularly, the invention relates to the field of forming stamping by means of a stamping press.
Dans le domaine de la mise à forme par emboutissage, il est connu, notamment pour des opérations de découpe ou de pliage d'un bord de tôle préalablement mise à forme, une telle tôle étant couramment désignée par le terme « embouti », d'utiliser un coulisseau coopérant avec une came, en vue de produire un mouvement suivant une direction autre que la direction verticale de descente du bâti supérieur vers le bâti inférieur. La
En effet, en référence à la
Toujours selon la pratique courante dans le domaine de la mise à forme par emboutissage avec coulisseau, l'angle β (de la direction des glissières du coulisseau) doit toujours être compris entre 0° et 40°, c'est-à-dire être nul ou positif, afin de permettre des directions de travail sensiblement inclinées par rapport à la verticale. Une direction de travail verticale ne nécessite en effet pas de coulisseau.Still according to the current practice in the field of forming by stamping with slider, the angle β (of the direction of the slider slides) must always be between 0 ° and 40 °, that is to say be zero or positive, to allow work directions significantly inclined relative to the vertical. Vertical working direction does not require sliders.
Le document de brevet publié
Le document de brevet publié
La pratique courante décrite ci-avant présente cependant des contraintes en ce qui concerne la direction de travail. En effet, le fait que le coulisseau ne puisse coulisser que suivant des directions formant un angle nul ou positif avec l'horizontale limite l'angle de travail compte tenu de la contrainte que l'angle entre les directions des glissières et de travail doit être de l'ordre de 55°.The current practice described above, however, presents constraints as regards the direction of work. Indeed, the fact that the slider can slide only in directions forming a zero or positive angle with the horizontal limits the working angle given the constraint that the angle between the directions of the slides and work must be of the order of 55 °.
L'invention a pour objectif de procurer davantage de liberté dans le choix des directions de travail d'un coulisseau sur un outillage de presse d'emboutissage.The object of the invention is to provide more freedom in the choice of working directions of a slide on a press press tooling.
L'invention a pour objet un outillage de mise à forme d'un embouti avec une presse d'emboutissage, comprenant : un bâti supérieur avec un coulisseau ; un bâti inférieur avec une came apte à coopérer par glissement avec le coulisseau lors d'un rapprochement des bâtis supérieur et inférieur, en vue de déplacer ledit coulisseau vers l'embouti pour réaliser une opération de mise à forme ; remarquable en ce que la direction de coulissement du coulisseau sur le bâti supérieur forme un angle β avec l'horizontale, mesuré dans le sens de travail dudit coulisseau lorsque ledit bâti est en position de travail sur la presse, qui est supérieur à 0° et dirigé vers le bas de manière à ce que le coulisseau descende par rapport audit bâti lors du rapprochement des bâtis supérieur et inférieur.The invention relates to a forming tool of a stamping with a stamping press, comprising: an upper frame with a slide; a frame lower with a cam adapted to cooperate by sliding with the slider during a combination of the upper and lower frames, for moving said slider to the stamped to perform a shaping operation; remarkable in that the direction of sliding of the slider on the upper frame forms an angle β with the horizontal, measured in the working direction of said slider when said frame is in the working position on the press, which is greater than 0 ° and directed downwardly so that the slider descends relative to said frame when bringing together the upper and lower frames.
La came est avantageusement fixe avec le bâti inférieur. Le coulisseau peut présenter une forme générale de triangle dont deux côtés forment les directions de coulissement sur le bâti supérieur et de glissement sur la came.The cam is advantageously fixed with the lower frame. The slide may have a general shape of triangle whose two sides form the sliding directions on the upper frame and sliding on the cam.
Un outil peut être monté sur le coulisseau, l'outil pouvant être notamment un poinçon de découpe et/ou de déformation, ou encore une lame de découpe.A tool may be mounted on the slide, the tool may be in particular a cutting punch and / or deformation, or a cutting blade.
Selon un mode avantageux de l'invention, la came présente une direction de glissement avec le coulisseau, qui forme un angle α avec l'horizontale, mesuré dans le sens de travail du coulisseau lorsque le bâti inférieur est en position de travail sur la presse, compris entre 55° et 90° et dirigé vers le bas.According to an advantageous embodiment of the invention, the cam has a direction of sliding with the slider, which forms an angle α with the horizontal, measured in the working direction of the slider when the lower frame is in the working position on the press , between 55 ° and 90 ° and directed downwards.
Selon un mode avantageux de l'invention, l'angle β est inférieur à 35°, préférentiellement inférieur à 25°, plus préférentiellement inférieur à 15°.According to an advantageous embodiment of the invention, the angle β is less than 35 °, preferably less than 25 °, more preferably less than 15 °.
Selon un mode avantageux de l'invention, l'angle y entre la direction de coulissement du coulisseau sur le bâti supérieur et la direction de glissement dudit coulisseau sur la came est compris entre 50° et 80°, préférentiellement entre 50° et 70°, plus préférentiellement entre 55° et 65°.According to an advantageous embodiment of the invention, the angle y between the sliding direction of the slide on the upper frame and the sliding direction of said slide on the cam is between 50 ° and 80 °, preferably between 50 ° and 70 ° more preferably between 55 ° and 65 °.
Selon un mode avantageux de l'invention, l'angle γ est égal à l'angle α moins l'angle β.According to an advantageous embodiment of the invention, the angle γ is equal to the angle α minus the angle β.
Selon un mode avantageux de l'invention, le bâti inférieur comprend une surface de réception de l'embouti, ladite surface comprend un bord apte à coopérer avec un outil fixé au coulisseau.According to an advantageous embodiment of the invention, the lower frame comprises a surface for receiving the stamping, said surface comprises an edge adapted to cooperate with a tool attached to the slide.
Selon un mode avantageux de l'invention, l'outil est une lame de découpe d'un bord de l'embouti.According to an advantageous embodiment of the invention, the tool is a cutting blade of an edge of the stamping.
Selon un mode avantageux de l'invention, le bâti supérieur comprend un presseur monté coulissant contre un effort élastique sur ledit bâti, ledit presseur étant apte à exercer une pression sur l'embouti lors du rapprochement des bâtis inférieur et supérieur.According to an advantageous embodiment of the invention, the upper frame comprises a presser slidably mounted against an elastic force on said frame, said presser being able to exert pressure on the stamping during the approach of the lower and upper frames.
L'invention a également pour objet un procédé de mise à forme d'un embouti au moyen d'un outillage de mise à forme monté sur une presse d'emboutissage, remarquable en ce que l'outillage est conforme à l'invention et comprend une étape de rapprochement des bâtis supérieur et inférieur en vue de la mise à forme de l'embouti, le coulisseau descendant par rapport au bâti supérieur lors dudit rapprochement.The subject of the invention is also a process for forming a stamped article by means of a forming tool mounted on a stamping press, which is remarkable in that the tooling is in accordance with the invention and comprises a step of approaching the upper and lower frames for the forming of the stamped, the slider down from the upper frame during said approximation.
Selon un mode avantageux de l'invention, le coulisseau découpe un bord de l'embouti lors de l'étape de rapprochement des bâtis supérieur et inférieur.According to an advantageous embodiment of the invention, the slider cuts an edge of the stamping during the step of bringing the upper and lower frames closer together.
Les mesures de l'invention sont intéressantes en ce qu'elles permettent de prévoir des directions de travail d'un coulisseau moins inclinées par rapport à l'horizontale tout en conservant une cinématique et une distribution des efforts similaires à celles courantes dans les coulisseaux classiques avec des angles de coulissement sur le bâti nuls ou positifs.The measures of the invention are interesting in that they make it possible to provide working directions of a slider less inclined relative to the horizontal while maintaining a kinematics and a distribution of efforts similar to those common in conventional sliders. with sliding angles on the frame zero or positive.
D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels :
- La
figure 1 est une représentation de deux configurations connues d'un outillage de presse d'emboutissage, comprenant un coulisseau et une came ; - La
figure 2 est une représentation des angles de glissières et de travail d'un coulisseau par rapport à l'horizontale selon l'état de la technique ; - La
figure 3 est une représentation des angles de glissières et de travail d'un coulisseau par rapport à l'horizontale selon l'invention ; - La
figure 4 est une représentation de détail d'un outillage d'emboutissage selon l'invention, au début de la descente du bâti supérieur en vue de mettre à forme l'embouti ; - La figue 5 est une représentation de l'outillage de la
figure 4 , à une étape ultérieure où le coulisseau a entamé son mouvement de travail ; - La
figure 6 est une représentation de l'outillage desfigures 4 et 5 , à une étape ultérieure à celle de lafigure 5 , correspondant à la fin du mouvement de travail où le bord de l'embouti est découpé.
- The
figure 1 is a representation of two known configurations of a stamping press tool, including a slider and a cam; - The
figure 2 is a representation of the angles of slide and work of a slide relative to the horizontal according to the state of the art; - The
figure 3 is a representation of the angles of slide and working of a slide relative to the horizontal according to the invention; - The
figure 4 is a detailed representation of a stamping tool according to the invention, at the beginning of the descent of the upper frame in order to shape the stamping; - Fig 5 is a representation of the tooling of the
figure 4 at a later stage where the slide has begun its work movement; - The
figure 6 is a representation of the tools ofFigures 4 and 5 at a later stage than that of thefigure 5 , corresponding to the end of the working movement where the edge of the stamp is cut.
Les
La
Cette configuration permet ainsi d'obtenir des directions de travail comprise entre 55° et 90°, c'est-à-dire plus proche de la verticale, tout en conservant une cinématique compatible avec les règles de bonne pratique, précisément la cinématique des coulisseaux avec un angle β nul ou positif.This configuration thus makes it possible to obtain working directions between 55 ° and 90 °, that is to say closer to the vertical, while maintaining a kinematics compatible with the rules of good practice, precisely the kinematics of the sliders. with a zero or positive angle β.
Les
La
La
La
Claims (10)
la direction de coulissement (112) du coulisseau (104) sur le bâti supérieur (102) forme un angle β avec l'horizontale, mesuré dans le sens de travail dudit coulisseau (104) lorsque ledit bâti (102) est en position de travail sur la presse, qui est supérieur à 0° et dirigé vers le bas de manière à ce que le coulisseau (104) descende par rapport audit bâti (102) lors du rapprochement des bâtis supérieur (102) et inférieur (116).Tooling (101) for forming a stamp (108) with a stamping press, comprising:
the sliding direction (112) of the slider (104) on the upper frame (102) forms an angle β with the horizontal, measured in the working direction of said slider (104) when said frame (102) is in the working position on the press, which is greater than 0 ° and directed downwardly so that the slide (104) descends relative to said frame (102) when the upper (102) and lower (116) frames are brought together.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1553753A FR3035341B1 (en) | 2015-04-27 | 2015-04-27 | SHAPING BY SHAPING WITH NEGATIVE ANGLE SLICER |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3088098A1 true EP3088098A1 (en) | 2016-11-02 |
Family
ID=53274752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16162993.6A Withdrawn EP3088098A1 (en) | 2015-04-27 | 2016-03-30 | Shaping by stamping with negative-angle slider |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3088098A1 (en) |
FR (1) | FR3035341B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020121122A1 (en) | 2001-03-05 | 2002-09-05 | Mitsuo Matsuoka | Negative-angle forming die |
DE10340509A1 (en) * | 2003-09-03 | 2005-03-31 | Bayerische Motoren Werke Ag | Wedge drive tool with mutually adjustable elements for cutting a sheet metal workpiece without cutting in a press |
FR2991204A1 (en) | 2012-06-01 | 2013-12-06 | Peugeot Citroen Automobiles Sa | Stamping press for sheet metal parts for car, has lower frame comprising counter form mounted in rotation between two positions, and bearing slide that is moved towards outside of undercut so as to carry out complementary pressing |
-
2015
- 2015-04-27 FR FR1553753A patent/FR3035341B1/en active Active
-
2016
- 2016-03-30 EP EP16162993.6A patent/EP3088098A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020121122A1 (en) | 2001-03-05 | 2002-09-05 | Mitsuo Matsuoka | Negative-angle forming die |
DE10340509A1 (en) * | 2003-09-03 | 2005-03-31 | Bayerische Motoren Werke Ag | Wedge drive tool with mutually adjustable elements for cutting a sheet metal workpiece without cutting in a press |
FR2991204A1 (en) | 2012-06-01 | 2013-12-06 | Peugeot Citroen Automobiles Sa | Stamping press for sheet metal parts for car, has lower frame comprising counter form mounted in rotation between two positions, and bearing slide that is moved towards outside of undercut so as to carry out complementary pressing |
Non-Patent Citations (1)
Title |
---|
"Aerial Cam Unit General Description of UCMSC and UCMSF", 5 November 2010 (2010-11-05), XP055259584, Retrieved from the Internet <URL:http://www.sankyo-oilless.co.jp/en/pdf/UCMSC_F80.pdf> [retrieved on 20160318] * |
Also Published As
Publication number | Publication date |
---|---|
FR3035341A1 (en) | 2016-10-28 |
FR3035341B1 (en) | 2017-12-01 |
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