CA2151771A1 - Process and device for stampling a dimple in a sheet-metal blank - Google Patents
Process and device for stampling a dimple in a sheet-metal blankInfo
- Publication number
- CA2151771A1 CA2151771A1 CA002151771A CA2151771A CA2151771A1 CA 2151771 A1 CA2151771 A1 CA 2151771A1 CA 002151771 A CA002151771 A CA 002151771A CA 2151771 A CA2151771 A CA 2151771A CA 2151771 A1 CA2151771 A1 CA 2151771A1
- Authority
- CA
- Canada
- Prior art keywords
- stamping
- sheet
- disc
- blank
- die
- 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.)
- Abandoned
Links
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims description 15
- 238000003466 welding Methods 0.000 claims description 10
- 230000001680 brushing effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011324 bead Substances 0.000 abstract description 19
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Compound panels (4) made up of sheet-metal parts of different thicknesses are stamped with beads to make the panels (4) stackable. Stamping is performed along a conveyor path by rotating stamping means (12, 12'). This enables stamping to be performed without interfering with the advance of the panel (4), thus increasing throughput.
Description
`' 2151771 Process and device f,or stampinq a dimple in a sheet-metal blank The invention relates to a process for stamping a dimple in a sheet-metal blank or welded tailored blank consisting of sheet-metal of different thlcknesses. The invention also relates to a device for carrying out the process.
Especially for the motor vehicle industry, but also for other applications, sheet-metal blanks (so-called "tailored blanks") are increasingly being produced which are assembled from a number of flat sheet-metal parts of different thicknesses e.g.
by roller seam welding or laser welding. These blanks are formed into structural components, such as car body parts, which possess precisely defined characteristics due to their having portions of different thickness. Production of these blanks is extensively mechanized and is performed in large hi~h-capacity production lines comprising automatic welding machines, conveyor systems and storage stations. When such blanks are stacked, their non-uniform thickness results in a canted stack which is not conducive to handling and transport.
Therefore, in order that the blanks may be stacked evenly, it is a known procedure to stamp beads (i.e. small troughs or mouldings) into the thinner portions, and sometimes also into the thicker portions, of the blanks, by means of conventional presses in which the blanks are immobile during the stamping operation.
The fundamental object of the invention is to improve the stamping process so that the high production capacity of the automatic welding and conveying systems is not reduced by the stamping and can be fully utilized, and to make this process more cost-effective.
This is achieved in the process of the abovementioned kind with the characterizing features of Claim 1.
`` ` 21~1771 .
A further fundamental object of the invention is to provide a device for carrying out the process. This is accomplished by a device with the features of Claim 5.
The invention will now be explained in detail with reference to the drawings, which illustrate the state of the art and also some embodiments of the invention shown by way of ex-ample. In particular:
Figure 1 shows a view of a welded tailored blank;
Figure 2 shows a side view of the blank in Figure l;
Figure 3 shows a stack of blanks;
Figure 4 shows a detail of the stack in Figure 3;
Figure 5 shows, in highly schematic form, a stamping device according to the state of the art;
Figure 6 shows, in highly schematic form, a stamping device I according to the invention;
Figure 7 shows an example of a schematic side view of a stamping device according to the invention; and Figure 8 shows a sectional view of part of the stamping de-vice in Figure 7.
Figure 9 shows a schema~ic view of a further example of a stamping device.
Figures 1 and 2 schematically show a sheet-metal blank 4 (or "compound panel") which has been assembled by welding together sheet-metal parts 1, 2 and 3 of different thick-nesses. The weld seams are designated 5 and 6. The sheet-metal parts 1, 2 and 3 usually have different thicknesses tl, t2 and t3 Such sheet-metal blanks 4 are used e g in the motor vehicle industry as so-called "tailored blanks" for the production of deep-drawn body-parts with precisely defined characteristics, the blank 4 being shaped as a complete unit to form the required part. The sheet-metal blanks or panels `- 2151771 4 are produced in large numbers and at high speed in fully or partly mechanized plants comprising automatic welding machines, stacking devices and conveyor systems. The in-dividual seams 5 and 6 can be welded by the automatic welding machines at speeds of lO~m/minute or more. Intermediate products, e.g. part-panels consisting of sheet-metal parts 1 and 2, are stacked pending further fabrication, as are the end products 4. In order that such sheet-metal blanks 4 can be arranged in an essentially even stack 8, e.g. on a pallet 7 (Fig. 3), it is a known procedure to provide stamped dimples in one or more of the thin sheet-metal parts r and sometimes also in the thick sheet-metal parts, to compensate for the differences in thickness of the sheets for stacking purposes.
Figure 4 schematically shows an enlarged view of the edge region 13 of the stack 8. Here the individual sheet-metal parts lr 1 and l''of the compound panels 4, 4 , 4 are pro-vided with dimples 9 r 9 ' and 9'' r imparting to the thin sheet-metal parts 1 in the region of these dimples a thick-ness which is approximately equal to the thickness t2 of the thick sheet-metal part 2. A similar dimple or bead could also be provided in the sheet-metal part 3. The provision of the beads enables the panels 4 to be stacked in an essentially evenr uncanted stack 8. The beads 9 may be formed at any desired stage. Individual sheet-metal parts may be stamped or pressed prior to weldingr or part-panels may be given this treatment r or the beads may be provided on the finished compound panel 4. Normally the beads which have been described are used for stacking purposes only and have no function in the finished sheet-metal part. As a ruler therefore, the beads are kept as few and as small as possible in order that the finished part should not be im-paired by the presence of the beads.
Figure 5 shows in highly schematic form how the beads are `' 4 2151771 stamped according tq the state of the art. A compound panel 4 (or part-panel) is conveyed through a conventional stamping device with a male top die 11 and a female bottom die 11 [sic~. To form the bead in the panel 4, the latter is stopped on the conveyor line and the bead is formed in the sheet-metal part by a vertical closing movement of the top and bottom dies. The panel 4 is then accelerated again and conveyed away from the stamping device. It is obvious that in the process according to the state of the art the panels have to be individually stopped on the conveyor line, kept sta-tionary for a certain period, and then reaccelerated. In a high-capacity panel-production line this is disruptive, and requires a lot of space. The stamping device limits the product feed rate. Using a number of stamping stations in parallel is an uneconomic solution: besides the cost of purchasing an additional stamping device, modifications to the control and handling systems of the production line are necessary.
Figure 6 shows a stamping device according to the invention, likewise in highly schematic form. The compound panel 4 (or panel part) is similarly conveyed long a conveyor device.
The stamping device is constructed in such a way that stamp-ing can be performed with the conveyor in motion, so that the panel 4 does not have to be stopped and reaccelerated. This is schematically illustrated in Figure 4 by means of a rotat-able disc 12 with a lobe and another rotatable disc 12 with a groove. Instead of the centred disc 12 with the lobe, e.g.
an eccentric disc could also be used.
Figures 7 and 8 show, also in schematic form, an example of an embodiment for stamping the dimples. Figure 7 shows a side view, and Figure 8 shows a partial section along the line A-A in Figure 7. Above the sheet-metal blank 4, which is being conveyed in the direction indicated by the arrow, and which is resting on a conveyor not shown in the drawing, ` 2151771 is a disc 22 which carries a lobe 23 and is eccentrically mounted on a shaft. The disc 22 is eccentrically rotatable by a drive unit (which is not shown) about a rotational axis 28 in the direction of rotation of the arrow 27. Below the sheet-metal blank 4 and the conveyor is a disc 22 which is preferably also rotatable and eccentrically mounted (rota-tional axis 28'; direction of rotation 27 ) and which is pro-vided with a groove 25. The lobe 23 and groove 25 constitute the male and female dies for stamping the bead 9 into the sheet-metal blank 4, as can be seen in Figure 8. In the at-rest position the disc 22 is orientated with the lobe in the standby position 24 illustrated by a dotted line. In this position, a sheet-metal blank 4 on the conveyor is able to pass unhindered between the two discs 22 and 22 , because of the eccentricity. When a command is given (by a control de-vice not shown in the drawing) for a dimple to be stamped in the sheet-metal blank 4 which is being conveyed through the de~ice, the disc 22 is driven and accelerated in the direction of the arrow 27 so that the lobe 23 is accelerated from the standby position 24 and strikes the sheet-metal blank 4 at a peripheral speed which essentially corresponds to the convey-ing speed of the blank. As the lobe 23 strikes the blank, the desired bead 9 is stamped into the blank by the lobe.
The disc 22 with its groove 25 serves as the female die for the lobe 23 acting as the male die. This disc is preferably also driven synchronously with the disc 22 and with the feed of the sheet-metal blank 4. After the bead 9 has been stamped, the disc 22 with the lobe 23 resumes the standby position, with the lobe in the position 24. Once the disc 22 has engaged in the groove 25 and the bead has been stamped, the speed of the disc 22 can be reduced by braking as it com-pletes its rotation to the at-rest position. The metal is not contacted by the roller, owing to the eccentricity on either side.
The disc 22 with its lobe 23 can be formed as seen in Figure:
~- ` ' 215i771 8. In this case the disc 22 is made up of three individual discs 30, 31 and 32. The actual lobe 23 is carried by the central disc 31. However, the discs 30 and 32 are also eccentric in the region of the lobe 23, and have the shoulders 38 and 39. The same applies to the disc 22 made up of three discs 34, 35 and 36, the discs 34 and 36 likewise being eccentric and having the shoulders 40 and 41 which co-operate with corresponding shoulders 38 and 39 to grip the sheet 4 during stamping. Clearly, the eccentric disc 22 must in this case be driven synchronously with the disc 22 so that the sheet 4 is acted on simultaneosuly by the lobe 23 and the cooperating shoulders 38, 40 and 39, 41.
There are, of course, other possible alternative embodiments e.g. using a single eccentric disc as male die and several grooved rollers as female dies, or any other desired con-figuration. What is important is that the stamping takes p~ace with the feed of the sheet 4 unhindered, or merely slowed down. To achieve this, the stamping tool must execute not only a vertical stamping movement but also a movement in the feed direction. The depth of the impression can be set within certain limits by vertical ad~ustment of the axes of rotation of the discs 22 and 22 . Different discs, with various dep~ths of lobe and groove, can also be used. The signal initiating the stamping is given in a con-ventional manner by the control device operating the plant, as in the conventional stamping method. The control device also ensures that the bead locations are staggered, in a manner which is in itself known, and is depicted in Figure 4.
Figure 9 shows a further example of an embodiment in highly schematic form. In this embodiment the stamping tool 50, 51 is able to execute, in addition to the vertical movement to form the bead, a longitudinal movement along the path 52 and 53 respectively, and thus to follow the feed of the sheet 4.
After stamping the bead, the tool is lifted clear of the 21S177i sheet and returned to the standby position. The result is a motion of the màle and female dies as indicated by the arrows a - d. The stamping movement is performed by means of actuating elements 54, 55, while longitudinal motion in one direction can be imparted by the advance of the sheet itself;
in the other direction, it is imparted by a drive unit not shown in the drawing, which can, if need be, also operate in the feed direction.
Stamping is preferably performed just after the corresponding welding operation, e.g. in combination with an oiling and brushing station for the sheet. This enables the handling of the sheets within the line as a whole to be greatly facilitated.
Especially for the motor vehicle industry, but also for other applications, sheet-metal blanks (so-called "tailored blanks") are increasingly being produced which are assembled from a number of flat sheet-metal parts of different thicknesses e.g.
by roller seam welding or laser welding. These blanks are formed into structural components, such as car body parts, which possess precisely defined characteristics due to their having portions of different thickness. Production of these blanks is extensively mechanized and is performed in large hi~h-capacity production lines comprising automatic welding machines, conveyor systems and storage stations. When such blanks are stacked, their non-uniform thickness results in a canted stack which is not conducive to handling and transport.
Therefore, in order that the blanks may be stacked evenly, it is a known procedure to stamp beads (i.e. small troughs or mouldings) into the thinner portions, and sometimes also into the thicker portions, of the blanks, by means of conventional presses in which the blanks are immobile during the stamping operation.
The fundamental object of the invention is to improve the stamping process so that the high production capacity of the automatic welding and conveying systems is not reduced by the stamping and can be fully utilized, and to make this process more cost-effective.
This is achieved in the process of the abovementioned kind with the characterizing features of Claim 1.
`` ` 21~1771 .
A further fundamental object of the invention is to provide a device for carrying out the process. This is accomplished by a device with the features of Claim 5.
The invention will now be explained in detail with reference to the drawings, which illustrate the state of the art and also some embodiments of the invention shown by way of ex-ample. In particular:
Figure 1 shows a view of a welded tailored blank;
Figure 2 shows a side view of the blank in Figure l;
Figure 3 shows a stack of blanks;
Figure 4 shows a detail of the stack in Figure 3;
Figure 5 shows, in highly schematic form, a stamping device according to the state of the art;
Figure 6 shows, in highly schematic form, a stamping device I according to the invention;
Figure 7 shows an example of a schematic side view of a stamping device according to the invention; and Figure 8 shows a sectional view of part of the stamping de-vice in Figure 7.
Figure 9 shows a schema~ic view of a further example of a stamping device.
Figures 1 and 2 schematically show a sheet-metal blank 4 (or "compound panel") which has been assembled by welding together sheet-metal parts 1, 2 and 3 of different thick-nesses. The weld seams are designated 5 and 6. The sheet-metal parts 1, 2 and 3 usually have different thicknesses tl, t2 and t3 Such sheet-metal blanks 4 are used e g in the motor vehicle industry as so-called "tailored blanks" for the production of deep-drawn body-parts with precisely defined characteristics, the blank 4 being shaped as a complete unit to form the required part. The sheet-metal blanks or panels `- 2151771 4 are produced in large numbers and at high speed in fully or partly mechanized plants comprising automatic welding machines, stacking devices and conveyor systems. The in-dividual seams 5 and 6 can be welded by the automatic welding machines at speeds of lO~m/minute or more. Intermediate products, e.g. part-panels consisting of sheet-metal parts 1 and 2, are stacked pending further fabrication, as are the end products 4. In order that such sheet-metal blanks 4 can be arranged in an essentially even stack 8, e.g. on a pallet 7 (Fig. 3), it is a known procedure to provide stamped dimples in one or more of the thin sheet-metal parts r and sometimes also in the thick sheet-metal parts, to compensate for the differences in thickness of the sheets for stacking purposes.
Figure 4 schematically shows an enlarged view of the edge region 13 of the stack 8. Here the individual sheet-metal parts lr 1 and l''of the compound panels 4, 4 , 4 are pro-vided with dimples 9 r 9 ' and 9'' r imparting to the thin sheet-metal parts 1 in the region of these dimples a thick-ness which is approximately equal to the thickness t2 of the thick sheet-metal part 2. A similar dimple or bead could also be provided in the sheet-metal part 3. The provision of the beads enables the panels 4 to be stacked in an essentially evenr uncanted stack 8. The beads 9 may be formed at any desired stage. Individual sheet-metal parts may be stamped or pressed prior to weldingr or part-panels may be given this treatment r or the beads may be provided on the finished compound panel 4. Normally the beads which have been described are used for stacking purposes only and have no function in the finished sheet-metal part. As a ruler therefore, the beads are kept as few and as small as possible in order that the finished part should not be im-paired by the presence of the beads.
Figure 5 shows in highly schematic form how the beads are `' 4 2151771 stamped according tq the state of the art. A compound panel 4 (or part-panel) is conveyed through a conventional stamping device with a male top die 11 and a female bottom die 11 [sic~. To form the bead in the panel 4, the latter is stopped on the conveyor line and the bead is formed in the sheet-metal part by a vertical closing movement of the top and bottom dies. The panel 4 is then accelerated again and conveyed away from the stamping device. It is obvious that in the process according to the state of the art the panels have to be individually stopped on the conveyor line, kept sta-tionary for a certain period, and then reaccelerated. In a high-capacity panel-production line this is disruptive, and requires a lot of space. The stamping device limits the product feed rate. Using a number of stamping stations in parallel is an uneconomic solution: besides the cost of purchasing an additional stamping device, modifications to the control and handling systems of the production line are necessary.
Figure 6 shows a stamping device according to the invention, likewise in highly schematic form. The compound panel 4 (or panel part) is similarly conveyed long a conveyor device.
The stamping device is constructed in such a way that stamp-ing can be performed with the conveyor in motion, so that the panel 4 does not have to be stopped and reaccelerated. This is schematically illustrated in Figure 4 by means of a rotat-able disc 12 with a lobe and another rotatable disc 12 with a groove. Instead of the centred disc 12 with the lobe, e.g.
an eccentric disc could also be used.
Figures 7 and 8 show, also in schematic form, an example of an embodiment for stamping the dimples. Figure 7 shows a side view, and Figure 8 shows a partial section along the line A-A in Figure 7. Above the sheet-metal blank 4, which is being conveyed in the direction indicated by the arrow, and which is resting on a conveyor not shown in the drawing, ` 2151771 is a disc 22 which carries a lobe 23 and is eccentrically mounted on a shaft. The disc 22 is eccentrically rotatable by a drive unit (which is not shown) about a rotational axis 28 in the direction of rotation of the arrow 27. Below the sheet-metal blank 4 and the conveyor is a disc 22 which is preferably also rotatable and eccentrically mounted (rota-tional axis 28'; direction of rotation 27 ) and which is pro-vided with a groove 25. The lobe 23 and groove 25 constitute the male and female dies for stamping the bead 9 into the sheet-metal blank 4, as can be seen in Figure 8. In the at-rest position the disc 22 is orientated with the lobe in the standby position 24 illustrated by a dotted line. In this position, a sheet-metal blank 4 on the conveyor is able to pass unhindered between the two discs 22 and 22 , because of the eccentricity. When a command is given (by a control de-vice not shown in the drawing) for a dimple to be stamped in the sheet-metal blank 4 which is being conveyed through the de~ice, the disc 22 is driven and accelerated in the direction of the arrow 27 so that the lobe 23 is accelerated from the standby position 24 and strikes the sheet-metal blank 4 at a peripheral speed which essentially corresponds to the convey-ing speed of the blank. As the lobe 23 strikes the blank, the desired bead 9 is stamped into the blank by the lobe.
The disc 22 with its groove 25 serves as the female die for the lobe 23 acting as the male die. This disc is preferably also driven synchronously with the disc 22 and with the feed of the sheet-metal blank 4. After the bead 9 has been stamped, the disc 22 with the lobe 23 resumes the standby position, with the lobe in the position 24. Once the disc 22 has engaged in the groove 25 and the bead has been stamped, the speed of the disc 22 can be reduced by braking as it com-pletes its rotation to the at-rest position. The metal is not contacted by the roller, owing to the eccentricity on either side.
The disc 22 with its lobe 23 can be formed as seen in Figure:
~- ` ' 215i771 8. In this case the disc 22 is made up of three individual discs 30, 31 and 32. The actual lobe 23 is carried by the central disc 31. However, the discs 30 and 32 are also eccentric in the region of the lobe 23, and have the shoulders 38 and 39. The same applies to the disc 22 made up of three discs 34, 35 and 36, the discs 34 and 36 likewise being eccentric and having the shoulders 40 and 41 which co-operate with corresponding shoulders 38 and 39 to grip the sheet 4 during stamping. Clearly, the eccentric disc 22 must in this case be driven synchronously with the disc 22 so that the sheet 4 is acted on simultaneosuly by the lobe 23 and the cooperating shoulders 38, 40 and 39, 41.
There are, of course, other possible alternative embodiments e.g. using a single eccentric disc as male die and several grooved rollers as female dies, or any other desired con-figuration. What is important is that the stamping takes p~ace with the feed of the sheet 4 unhindered, or merely slowed down. To achieve this, the stamping tool must execute not only a vertical stamping movement but also a movement in the feed direction. The depth of the impression can be set within certain limits by vertical ad~ustment of the axes of rotation of the discs 22 and 22 . Different discs, with various dep~ths of lobe and groove, can also be used. The signal initiating the stamping is given in a con-ventional manner by the control device operating the plant, as in the conventional stamping method. The control device also ensures that the bead locations are staggered, in a manner which is in itself known, and is depicted in Figure 4.
Figure 9 shows a further example of an embodiment in highly schematic form. In this embodiment the stamping tool 50, 51 is able to execute, in addition to the vertical movement to form the bead, a longitudinal movement along the path 52 and 53 respectively, and thus to follow the feed of the sheet 4.
After stamping the bead, the tool is lifted clear of the 21S177i sheet and returned to the standby position. The result is a motion of the màle and female dies as indicated by the arrows a - d. The stamping movement is performed by means of actuating elements 54, 55, while longitudinal motion in one direction can be imparted by the advance of the sheet itself;
in the other direction, it is imparted by a drive unit not shown in the drawing, which can, if need be, also operate in the feed direction.
Stamping is preferably performed just after the corresponding welding operation, e.g. in combination with an oiling and brushing station for the sheet. This enables the handling of the sheets within the line as a whole to be greatly facilitated.
Claims (17)
1. Process for stamping a dimple in a blank consisting of sheet-metal of different thicknesses, characterized in that the blank is conveyed along a conveyor path and is stamped without any interruption of the conveying operation.
2. Process according to claim 1, characterized in that the stamping is performed with a stamping tool which executes a movement in both the stamping direction and the conveying direction.
3. Process according to claim 2, characterized in that the movement of the stamping tool is matched to the rate of feed of the blank on the conveyor path.
4. Device for stamping a dimple in a blank, including:
a stamping tool (12, 12'; 22, 22') arranged on a conveyor path and capable of executing a movement in both a stamping direction and a conveying direction.
a stamping tool (12, 12'; 22, 22') arranged on a conveyor path and capable of executing a movement in both a stamping direction and a conveying direction.
5. Device according to claim 4, characterized in that the stamping tool possesses a first element (22), rotatable about an axis (28), and having a male stamping die (23) eccentrically arranged with respect to the axis.
6. Device according to claim 5, characterized in that the stamping tool possesses a second element (22'), rotatable about an axis (28'), and constituting a female die for the male stamping die.
7. Device according to claim 5 or 6, characterized in that at least the first element (22) can be driven at a speed matched to the rate of feed of the conveyor path.
8. Device according to claim 5 or 6, characterized in that the first element (22) has an eccentric disc (31) which constitutes the male die.
9. Device according to claim 8, characterized in that the first element (22) has two further discs (30, 32) arranged on either side of the eccentric disc (31), each having an eccentrically arranged shoulder (38, 39).
10. Device according to claim 6, characterized in that the second element (22') has a central disc (35) flanked on either side by two discs (34, 36) each having an eccentric shoulder (40, 41).
11. Device according to claim 5 or 6, characterized in that the first element comprises a roller with a lobe, which constitutes the male die, arranged eccentrically thereon, and in that a roller with a peripheral groove is provided as the second element.
12. Device according to claim 4, 5, 6, 9 or 10, charac-terized in that at least one stamping tool is provided which forms part of a stamping station which is connected to a welding machine or placed immediately thereafter, especially in combination with an oiling and brushing station for treating the sheet in order to keep the sheet transport cost to a minimum.
13. Device according to claim 7, characterized in that the first element (22) has an eccentric disc (31) which constitutes the male die.
14. Device according to claim 13, characterized in that the first element (22) has two further discs (30, 32) arranged on either side of the eccentric disc (31), each having an eccentrically arranged shoulder (38, 39).
15. Device according to claim 14, characterized in that the second element (22') has a central disc (35) flanked on either side by two discs (34, 36) each having an eccentric shoulder (40, 41).
16. Device according to claim 7, characterized in that the first element comprises a roller with a lobe, which constitutes the male die, arranged eccentrically thereon, and in that a roller with a peripheral groove is provided as the second element.
17. Device according to claim 13, 14, 15 or 16, charac-terized in that at least one stamping tool is provided which forms part of a stamping station which is connected to a welding machine or placed immediately thereafter, especially in combination with an oiling and brushing station for treating the sheet in order to keep the sheet transport cost to a minimum.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH01939/94-4 | 1994-06-20 | ||
| CH193994 | 1994-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2151771A1 true CA2151771A1 (en) | 1995-12-21 |
Family
ID=4222135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002151771A Abandoned CA2151771A1 (en) | 1994-06-20 | 1995-06-14 | Process and device for stampling a dimple in a sheet-metal blank |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0688614A1 (en) |
| JP (1) | JP2859561B2 (en) |
| KR (1) | KR960000335A (en) |
| BR (1) | BR9502860A (en) |
| CA (1) | CA2151771A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246945A (en) * | 2020-09-30 | 2021-01-22 | 吉安持凡电子科技有限公司 | Stamping method for stamping large-sized plate |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4489285B2 (en) * | 2000-12-22 | 2010-06-23 | 菊池プレス工業株式会社 | Seam welding apparatus and method |
| DE102010042454A1 (en) * | 2010-10-14 | 2012-04-19 | Bayerische Motoren Werke Ag | Device for stamping spacing seams in metal sheet circuit boards, has stampers which are displaceably arranged at periphery of roll supported by support |
| US9623470B1 (en) | 2016-05-12 | 2017-04-18 | Delaco Steel Corp. | Metal processing apparatus and method for forming off-set dimples in metal sheets |
| DE202016003821U1 (en) | 2016-06-17 | 2016-07-19 | Anchor Lamina Gmbh | Device for embossing spacer beads in sheet metal blanks and blank cutting tool with at least one such device |
| CN112139325B (en) * | 2020-09-24 | 2023-07-07 | 安徽玄同机电科技有限公司 | Metal sheet limit portion knurling crimping equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR486940A (en) * | 1917-09-26 | 1918-05-16 | Detroit Pressed Steel Co | Manufacturing process for stamped or stamped sheet metal articles |
| US3528272A (en) * | 1968-10-28 | 1970-09-15 | Eli I Robinsky | Machine for deforming sheet metal from the flat state into a tubular form |
| JPS4852854A (en) * | 1971-11-05 | 1973-07-25 | ||
| US4277868A (en) * | 1979-04-30 | 1981-07-14 | The Boeing Company | Machine and method for single pass taper milling |
| JPS56126033A (en) * | 1980-03-05 | 1981-10-02 | Mitsubishi Electric Corp | Production of blanked core |
| US4732082A (en) * | 1986-06-25 | 1988-03-22 | Carl Ireton | Apparatus and method for mounting embossing rollers in a press line |
| JPH0352721A (en) * | 1989-07-18 | 1991-03-06 | Honda Motor Co Ltd | Non-magnetic plate and projecting part forming device for non-magnetic plate and separating method for non-magnetic plate |
-
1995
- 1995-04-22 EP EP95106041A patent/EP0688614A1/en not_active Withdrawn
- 1995-06-08 KR KR1019950015012A patent/KR960000335A/en not_active Application Discontinuation
- 1995-06-14 CA CA002151771A patent/CA2151771A1/en not_active Abandoned
- 1995-06-19 JP JP7152022A patent/JP2859561B2/en not_active Expired - Fee Related
- 1995-06-20 BR BR9502860A patent/BR9502860A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246945A (en) * | 2020-09-30 | 2021-01-22 | 吉安持凡电子科技有限公司 | Stamping method for stamping large-sized plate |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960000335A (en) | 1996-01-25 |
| EP0688614A1 (en) | 1995-12-27 |
| JP2859561B2 (en) | 1999-02-17 |
| BR9502860A (en) | 1996-01-30 |
| JPH0810859A (en) | 1996-01-16 |
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| Date | Code | Title | Description |
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| FZDE | Dead |