CA2016724C - Multitool punch holder - Google Patents
Multitool punch holderInfo
- Publication number
- CA2016724C CA2016724C CA002016724A CA2016724A CA2016724C CA 2016724 C CA2016724 C CA 2016724C CA 002016724 A CA002016724 A CA 002016724A CA 2016724 A CA2016724 A CA 2016724A CA 2016724 C CA2016724 C CA 2016724C
- Authority
- CA
- Canada
- Prior art keywords
- tool carrier
- punch
- ram
- multitool
- punches
- 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.)
- Expired - Fee Related
Links
- 230000008878 coupling Effects 0.000 claims 4
- 238000010168 coupling process Methods 0.000 claims 4
- 238000005859 coupling reaction Methods 0.000 claims 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000452 restraining effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000000284 resting effect Effects 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/12—Punching using rotatable carriers
-
- 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
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/12—Punching using rotatable carriers
- B21D28/125—Punching using rotatable carriers with multi-tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/028—Loading or unloading of dies, platens or press rams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
- B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
Abstract
A multitool punch holder in which a tool carrier (22) holds a circumferential array of punches (76) in a corresponding series of bores. Each punch (76) is attached to a stem rod (50) having an upper end protruding above the tool carrier (22). The tool carrier (22) is rotated by an index drive (102,104, 106, 108) so as to bring a selected one fo the stem rods (50) beneath a ram drive feature (100) protruding radially outward to lie above of the stem rod ends (52). The tool carrier (22) is coupled to the ram (14) by a head member (20) which is telescopically received therein allowing the ram (14) to continue its descent after contact of the tool carrier.
(22) with the workpiece, the ram (14) having a feature (100) engaging a selected stem rod end (52) lying beneath the ram drive feature (100) to cause advance of the attached punch (76) against the resistance of an encircling stripper spring (62).
(FIGURE 1)
(22) with the workpiece, the ram (14) having a feature (100) engaging a selected stem rod end (52) lying beneath the ram drive feature (100) to cause advance of the attached punch (76) against the resistance of an encircling stripper spring (62).
(FIGURE 1)
Description
~0~67 MULTITOOL PUNCH HOI,DER
This invention concerns tool holders and mor particularly holders for carrying punches in punch presses particularly punch presses having rotary turrets carrying punches to enable automated punch changing. There has heretofore been developed punch presses having upper and lower turret plates respectively carrying a circumferential array of punches and mating dies able to be selectively indexed to a punch ram. Thi~ enables automated changing of punches and dies in the operation of the punch press.
The punches have also been mounted and driven to enable indexing about their own axis in order to change the orientation of the punch for a given punching operation. An example of such indexed tool holder is described in U.S. Patent 4,412,469 issued on November 1, 1983 for "Turret Punch Presses Having Tool Holders Rotatably Mounted in the Turrets".
It would greatly increase the number of punches available if a number of punches were included at each station in the turret, in a rotary holder itself able to rotate about its own axis, and such multitool punch holders have heretofore been proposed. Examples of these are described in U.S. Patent 4,569,267 issued on February 11, 1986 for a "Multitool Punch Mechanism" and U.S. Patent 4,779,329 issued on October 25, 1988 for a "Tool Changer for Rotatable Tool Assemblies in Punching ,~ . ~., i; . , . ~ ,;
This invention concerns tool holders and mor particularly holders for carrying punches in punch presses particularly punch presses having rotary turrets carrying punches to enable automated punch changing. There has heretofore been developed punch presses having upper and lower turret plates respectively carrying a circumferential array of punches and mating dies able to be selectively indexed to a punch ram. Thi~ enables automated changing of punches and dies in the operation of the punch press.
The punches have also been mounted and driven to enable indexing about their own axis in order to change the orientation of the punch for a given punching operation. An example of such indexed tool holder is described in U.S. Patent 4,412,469 issued on November 1, 1983 for "Turret Punch Presses Having Tool Holders Rotatably Mounted in the Turrets".
It would greatly increase the number of punches available if a number of punches were included at each station in the turret, in a rotary holder itself able to rotate about its own axis, and such multitool punch holders have heretofore been proposed. Examples of these are described in U.S. Patent 4,569,267 issued on February 11, 1986 for a "Multitool Punch Mechanism" and U.S. Patent 4,779,329 issued on October 25, 1988 for a "Tool Changer for Rotatable Tool Assemblies in Punching ,~ . ~., i; . , . ~ ,;
-2- ~016~
Machines".
However, it is important that such punch holders be able to generate sufficient stripping forces to insure reliable punching, i.e., to exert punch withdrawl forces after punch penetration of the workpiece has occurxed.
It is also important that such rotary indexing tool holders be simple and reliable in operation.
Summary of the Invention The present invention comprises a multitool punch holder of the rotary indexing type in which a tool carrier cylinder is provided mounted in an axially fixed sleeve rotatable about its axis by an indexing drive.
The tool carrier is formed with a plurality of axial bores arranged about the carrier rotary axis, each bore adapted to slidably receive a punch stem rod, each having a punch at the lower and thereof. Each punch stem is formed with a plunger portion protruding above the tool carrier and indexable beneath a protruberance formed on the punch ram so as to be selectively driven as the ram is reciprocated.
A stripper spring surrounding each punch stem resists advancing by the ram stroke, and acts as a stripping spring to withdraw the associated punch after workpiece penetration.
The ram is secured to the tool carrier by a head member telescoped into the tool carrier, axially movable therein against the resistance of a compression spring serving to maintain each punch stem rod below the ram drive feature during indexing of the tool holder.
. .
Machines".
However, it is important that such punch holders be able to generate sufficient stripping forces to insure reliable punching, i.e., to exert punch withdrawl forces after punch penetration of the workpiece has occurxed.
It is also important that such rotary indexing tool holders be simple and reliable in operation.
Summary of the Invention The present invention comprises a multitool punch holder of the rotary indexing type in which a tool carrier cylinder is provided mounted in an axially fixed sleeve rotatable about its axis by an indexing drive.
The tool carrier is formed with a plurality of axial bores arranged about the carrier rotary axis, each bore adapted to slidably receive a punch stem rod, each having a punch at the lower and thereof. Each punch stem is formed with a plunger portion protruding above the tool carrier and indexable beneath a protruberance formed on the punch ram so as to be selectively driven as the ram is reciprocated.
A stripper spring surrounding each punch stem resists advancing by the ram stroke, and acts as a stripping spring to withdraw the associated punch after workpiece penetration.
The ram is secured to the tool carrier by a head member telescoped into the tool carrier, axially movable therein against the resistance of a compression spring serving to maintain each punch stem rod below the ram drive feature during indexing of the tool holder.
. .
-3- Z O ~6 A stripper plate is mounted to the lower face of the tool carrier, and engages the workpiece as the ram strokes to initiate driving of a selected stem and punch beneath the ram drive feature.
This multitool punch holder assembly has the advantage of providing a multitool selection but of a simple and reliable configuration, and at the same time generating adequate punch stripping forces.
Description of the Drawings FIGURE 1 is a longitudinal sectional view through a multitool punch holder according to the present invention, with a fragmentary portion of associated punch press structure.
FIGURE 2 is an end view of the punch holder shown in FIGURE 1.
Detailed Description FIGURES 1 and 2 illustrate the multitool punch holder 10 according to the present invention, shown installed in the upper turret plate 12 of a rotary turret punch press. The press ram 14 is formed with a tee slot 16 which received a tee shaped head 18 of a tee member 20 included in the holder assembly 10. The tee member 20 is telescopically received into a cylindrical tool carrier 22 by a mounting rod 24 threaded at 25 into the lower end of tee member 20, having a head 26 seated against an endwall 28 in a bore 30 formed in the tool carrier 22 slidably receiving the mounting rod 24.
A return compression spring 32 encircles the mounting rod 24 and is seated against endwall 34 of the bore 36 slidably ., , _4_ ~ O~ q receiving the tee member 20. This urges the tool carrier 22 downwardly to be lowered away from the ram 14 prior to stroking of the ram, as shown in FIGURE 1.
The tool carrier 22 is mounted in an index sleeve 40 so as to be axially movable therein, but locked against relative rotation by a key 42 secured to the tool carrier 22 with a screw 44, and mating with a keyway slot 46 formed in the index sleeve 40.
The tool carrier 22 is formed with a series of twelve axial bores 48 spaced radially outward from the centerline of the tool carrier, in a circumferential array. Each bore 48 is adapted to receive a punch stem rod 50, extending parallel to each other, having an upper plunger end 52 guided through a bronze bushing 54 and protruding above the upper end face of the tool carrier 22. A retainer plate 56 is secured to the end face 56 with screws 58, keeps the punch stem rods 50 in position in the bores 48.
A stripper spring 62 encircles each punch stem rod 50, and is seated against a thrust washer 64 abutting a shoulder 66 in the lower section of bore 48 and shoulder 68 of the stem rod 50. The stripper springs 62 also act against a thrust washer beneath the bronze bushing 54. Downward movement of the stem rods 50 is resisted by compression of the stripper springs 62 by snap rings 60 acting on thrust washer 72 and bushing 54 and thrust washer 70.
The stem rods 50 each include a threaded section 74 received in a punch 76 alternatively, 76 the stem rods 50 and -5~ 67,~:~
punches 76 may be made one piece to reduce costs. An antirotation dowel 78 maintains the orientation of the punch 76~
A urethane stripper end cap B0 is secured with capscrews 82 and dowels 84 to the lower end face 86 of the tool carrier with punch openings 88 alinged with each punch 76, preferably formed by the punches themselves in the initial cycle of operation.
The index sleeve 40 is rotatably received in a bushing sleeve 90 fixed in the upper turret plate 12 with capscrews 92.
The index sleeve 40 is restrained axially by means of a flange 94 resting on flange 96 o~ the bushing sleeve 90, but free to rotate. The tool carrier 22 rotates with the index sleeve 40, but is axially movable therein. A series of spring plunger assemblies 98 yieldably retains the tool carrier 22 axially within the index sleeve 40.
The index sleeve 40 is adapted to be rotationally driven to index each stem rod end 52 beneath an asymetric ram engagement feature 100 extending radially out ~rom the main shape of the ram 14 to lie above a single stem rod end 52.
This thereby enables selective punching by ram descending motion with a single selected punch 78 indexed to that position.
The rotation of the index sleeve 40 may be carried out by an index drive arrangement 103 mating with a vee block drive feature 102 attached to the upper side of flange 94 such index drive 103 could include a drive wedge axially movable on a plate to seat in the vee block drive feature 102, the drive , ;- , ,, . ,, :. ;
-6- ~ 167~'~
wedge driven by a worm to enable rotation to index the tool carrier 22.
A "home" detent comprised of a spring plunger assembly 110 seats in a pocket 112 in the flange 96 of bushing 90. The punch holder assembly 10 is located initially by seating of the spring plunger 110, which prevents unintended movement out of the home position even if a considerably delay occurs prior to the initial indexing cycle.
In operation, the turret plate 12 is rotated to engage the ram 14 with the head member 20.
The indexing drive is activated to bring a selected one of the stem rod 50 beneath the ram engagement feature 100.
The ram 16 is then stroked, causing tool carrier 22 to descend with the head member 20 until the stripper plate 80 engages the surface of a workpiece. The head member 20 continues to descend with the ram, telescoping by sliding into the bore 36 against the resistance of compression spring 32.
The tool carrier 22 heing arrested against any further axial movement, the ram feature 100 descends to engage the protruding end 52 of the stem rod 50 located therebelow. This causes the attached punch 76 to be driven through the workpiece against the resistance of the encircling stripper spring 62.
As the ram 14 thereafter ascends, the stripper spring 62 forces the stem rod 50 upward to withdraw the attached punch 76 from the workpiece.
. . .
-7- Z ~67~
Continued ascent of the ram 14 raises the tool carrier 22 to the return positon, and draws the head member 20 out of the bore 36, with the spring 32 holding it in this position after the ram moves out of engagement with the tee shaped portion 18.
., , , ~
.. . , . - . . . . -
This multitool punch holder assembly has the advantage of providing a multitool selection but of a simple and reliable configuration, and at the same time generating adequate punch stripping forces.
Description of the Drawings FIGURE 1 is a longitudinal sectional view through a multitool punch holder according to the present invention, with a fragmentary portion of associated punch press structure.
FIGURE 2 is an end view of the punch holder shown in FIGURE 1.
Detailed Description FIGURES 1 and 2 illustrate the multitool punch holder 10 according to the present invention, shown installed in the upper turret plate 12 of a rotary turret punch press. The press ram 14 is formed with a tee slot 16 which received a tee shaped head 18 of a tee member 20 included in the holder assembly 10. The tee member 20 is telescopically received into a cylindrical tool carrier 22 by a mounting rod 24 threaded at 25 into the lower end of tee member 20, having a head 26 seated against an endwall 28 in a bore 30 formed in the tool carrier 22 slidably receiving the mounting rod 24.
A return compression spring 32 encircles the mounting rod 24 and is seated against endwall 34 of the bore 36 slidably ., , _4_ ~ O~ q receiving the tee member 20. This urges the tool carrier 22 downwardly to be lowered away from the ram 14 prior to stroking of the ram, as shown in FIGURE 1.
The tool carrier 22 is mounted in an index sleeve 40 so as to be axially movable therein, but locked against relative rotation by a key 42 secured to the tool carrier 22 with a screw 44, and mating with a keyway slot 46 formed in the index sleeve 40.
The tool carrier 22 is formed with a series of twelve axial bores 48 spaced radially outward from the centerline of the tool carrier, in a circumferential array. Each bore 48 is adapted to receive a punch stem rod 50, extending parallel to each other, having an upper plunger end 52 guided through a bronze bushing 54 and protruding above the upper end face of the tool carrier 22. A retainer plate 56 is secured to the end face 56 with screws 58, keeps the punch stem rods 50 in position in the bores 48.
A stripper spring 62 encircles each punch stem rod 50, and is seated against a thrust washer 64 abutting a shoulder 66 in the lower section of bore 48 and shoulder 68 of the stem rod 50. The stripper springs 62 also act against a thrust washer beneath the bronze bushing 54. Downward movement of the stem rods 50 is resisted by compression of the stripper springs 62 by snap rings 60 acting on thrust washer 72 and bushing 54 and thrust washer 70.
The stem rods 50 each include a threaded section 74 received in a punch 76 alternatively, 76 the stem rods 50 and -5~ 67,~:~
punches 76 may be made one piece to reduce costs. An antirotation dowel 78 maintains the orientation of the punch 76~
A urethane stripper end cap B0 is secured with capscrews 82 and dowels 84 to the lower end face 86 of the tool carrier with punch openings 88 alinged with each punch 76, preferably formed by the punches themselves in the initial cycle of operation.
The index sleeve 40 is rotatably received in a bushing sleeve 90 fixed in the upper turret plate 12 with capscrews 92.
The index sleeve 40 is restrained axially by means of a flange 94 resting on flange 96 o~ the bushing sleeve 90, but free to rotate. The tool carrier 22 rotates with the index sleeve 40, but is axially movable therein. A series of spring plunger assemblies 98 yieldably retains the tool carrier 22 axially within the index sleeve 40.
The index sleeve 40 is adapted to be rotationally driven to index each stem rod end 52 beneath an asymetric ram engagement feature 100 extending radially out ~rom the main shape of the ram 14 to lie above a single stem rod end 52.
This thereby enables selective punching by ram descending motion with a single selected punch 78 indexed to that position.
The rotation of the index sleeve 40 may be carried out by an index drive arrangement 103 mating with a vee block drive feature 102 attached to the upper side of flange 94 such index drive 103 could include a drive wedge axially movable on a plate to seat in the vee block drive feature 102, the drive , ;- , ,, . ,, :. ;
-6- ~ 167~'~
wedge driven by a worm to enable rotation to index the tool carrier 22.
A "home" detent comprised of a spring plunger assembly 110 seats in a pocket 112 in the flange 96 of bushing 90. The punch holder assembly 10 is located initially by seating of the spring plunger 110, which prevents unintended movement out of the home position even if a considerably delay occurs prior to the initial indexing cycle.
In operation, the turret plate 12 is rotated to engage the ram 14 with the head member 20.
The indexing drive is activated to bring a selected one of the stem rod 50 beneath the ram engagement feature 100.
The ram 16 is then stroked, causing tool carrier 22 to descend with the head member 20 until the stripper plate 80 engages the surface of a workpiece. The head member 20 continues to descend with the ram, telescoping by sliding into the bore 36 against the resistance of compression spring 32.
The tool carrier 22 heing arrested against any further axial movement, the ram feature 100 descends to engage the protruding end 52 of the stem rod 50 located therebelow. This causes the attached punch 76 to be driven through the workpiece against the resistance of the encircling stripper spring 62.
As the ram 14 thereafter ascends, the stripper spring 62 forces the stem rod 50 upward to withdraw the attached punch 76 from the workpiece.
. . .
-7- Z ~67~
Continued ascent of the ram 14 raises the tool carrier 22 to the return positon, and draws the head member 20 out of the bore 36, with the spring 32 holding it in this position after the ram moves out of engagement with the tee shaped portion 18.
., , , ~
.. . , . - . . . . -
Claims (7)
1. A multitool punch holder (10) for a punch press having a punch support structure comprising a rotary turret plate (12) and a vertically movable ram (14) for driving a selected punch (76), said punch holder including a tool carrier (22) mounted in said rotary turret plate (12) for rotation about an axis, means coupling said tool carrier (22) to said ram (14) to be driven thereby, said tool carrier (22) being characterized by a circumferential array of axially extending bores (48) distributed about said axis of rotation of said tool carrier (22), and a plurality of punches (76) each mounted in a respective one of said plurality of bores (48) in said tool carrier (22); said tool carrier (22) rotation in said rotary turret plate (12) enabling indexing of each one of said punches (76) to an operative position, said means (20, 32) coupling said tool carrier (22) and said ram (14) including means producing a limited descending movement of said tool carrier (22) and punches (76) carried therein together with said ram (14), said movement of said tool carrier (22) arrested by contact with a work piece after a predetermined extent of descending travel of said ram (14), and said means coupling said ram (14) to said tool carrier (22) enabling continuing descent of said ram (14) after movement of said tool carrier (22) is arrested; and, means (100) for driving a single one of said punches (76) at said operative position by said continued descent of said ram (14), said selected one of said punches (76) in an operative position determined by the rotational position of said tool carrier (22) in said rotary turret plate (12).
2. A multitool punch holder (10) for a punch press according to claim 1 wherein each of said punches (76) are formed with a punch stem rod (50) having an upper end (52) protruding above said tool carrier (22), and wherein said ram (14) is formed with a radial feature (100) aligned with said single selected punch (76) with said tool carrier (22) in a given operative position in said turret plate (12).
3. A multitool punch holder (10) for a punch press according to claim 2 wherein each punch stem rod (50) is urged upward by an encircling stripper spring (62).
4. A multitool punch holder (10) for a punch press according to claim 3 wherein said means coupling said ram (16) and said tool carrier (22) comprises a head member (20) having a portion (18) engaging said ram (16) and slidably received in a bore (36) in said tool carrier (22), and a spring (32) acting between said head member (20) and said tool carrier (22) resisting relative axial movement therebetween.
5. A multitool punch holder (10) for a punch press according to claim 4 further including a stripper plate (80) attached to the lower face of said tool carrier (22) and adapted to engage said workpiece upon downward strokings of said ram (14).
6. A multitool punch holder (10) for a punch press according to claim 1 further including an index sleeve (40) rotatatably mounted in said punch press punch holder structure (12) but restrained against axial movement therein, said tool carrier (22) axially movable in said index sleeve (40) but rotationally coupled thereto; and further including indexing drive means (102, 103) for rotating said index sleeve (40).
7. A multitool punch holder (10) for a punch press according to claim 6 further including spring plunger means (98) yieldably restraining said tool carrier (22) in said index sleeve (40) against axial displacement therefrom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35525289A | 1989-05-22 | 1989-05-22 | |
| US355,252 | 1989-05-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2016724A1 CA2016724A1 (en) | 1990-11-22 |
| CA2016724C true CA2016724C (en) | 1999-04-27 |
Family
ID=23396783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002016724A Expired - Fee Related CA2016724C (en) | 1989-05-22 | 1990-05-14 | Multitool punch holder |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0399337B1 (en) |
| JP (1) | JP2720576B2 (en) |
| CA (1) | CA2016724C (en) |
| DE (1) | DE69011411T2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7326008B2 (en) * | 2004-12-10 | 2008-02-05 | Danly Iem, Llc | Servo tapping unit with built in shock protection |
| CN102806280B (en) * | 2012-08-20 | 2015-05-06 | 福建先海电气设备有限公司 | Numerical control turret punch press |
| WO2016023794A1 (en) * | 2014-08-12 | 2016-02-18 | Pass Stanztechnik Ag | Multiple-use tool |
| DE102015219416B3 (en) | 2015-10-07 | 2017-03-02 | Pass Stanztechnik Ag | Multiple tool for a punching device and punching device with a corresponding multiple tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3241046A1 (en) * | 1982-11-06 | 1984-05-10 | Trumpf GmbH & Co, 7257 Ditzingen | PUNCHING MACHINE WHOSE PUNCHING STAMP IS DESIGNED AS A MULTIPLE STAMP |
| GB8712222D0 (en) * | 1987-05-22 | 1987-06-24 | Tower Machine Tools Ltd | Multi-tool indexing station |
| DE3720777C2 (en) * | 1987-06-24 | 1993-10-07 | Behrens Ag C | Turret cutting press |
-
1990
- 1990-05-14 CA CA002016724A patent/CA2016724C/en not_active Expired - Fee Related
- 1990-05-15 DE DE69011411T patent/DE69011411T2/en not_active Expired - Lifetime
- 1990-05-15 EP EP90109135A patent/EP0399337B1/en not_active Expired - Lifetime
- 1990-05-22 JP JP2130433A patent/JP2720576B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0390225A (en) | 1991-04-16 |
| EP0399337A1 (en) | 1990-11-28 |
| DE69011411T2 (en) | 1995-03-30 |
| CA2016724A1 (en) | 1990-11-22 |
| DE69011411D1 (en) | 1994-09-15 |
| JP2720576B2 (en) | 1998-03-04 |
| EP0399337B1 (en) | 1994-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4998958A (en) | Multitool punch holder | |
| CA2016725C (en) | Multitool punch holder | |
| US4569267A (en) | Multitool punch mechanism | |
| EP0875310B1 (en) | Turret for punch changing in punching machines | |
| US4489584A (en) | Single stroke, draw and trim die assembly | |
| EP0541959B1 (en) | Punch holder with stripper arrangement | |
| EP0399339B1 (en) | Marking tool holder for a punch press | |
| US5211095A (en) | Arrangement enabling variably oriented punching with each tool in a multiple tool holder | |
| CA1229036A (en) | Vertical pierce die | |
| CA2016724C (en) | Multitool punch holder | |
| WO1988009232A1 (en) | Rotatable multi-tool holder and a machine tool provided with such a holder | |
| CA2016723C (en) | Punch holder with a stripper arrangement | |
| US4043169A (en) | Triple action cupping tool | |
| US3709082A (en) | Simultaneous multiple side punching apparatus | |
| US3805581A (en) | Workpiece forming apparatus | |
| US1988935A (en) | Punch press | |
| SU1263400A1 (en) | Apparatus for machining wall sectors of hollow axially-symmetric articles | |
| JPH06126348A (en) | Turret punch press | |
| SU1581463A1 (en) | Compound die | |
| DE2626685A1 (en) | DEVICE FOR THE PRODUCTION OF ONE-SIDED OPEN DEEP-DRAWN PARTS WITH AN EXTENSION ON THE OPENING SIDE | |
| SU389871A1 (en) | DEVICE FOR SUBMITTING PIN PLUGS TO THE STAMP WORKING AREA | |
| SU242103A1 (en) | ||
| SU1706757A1 (en) | Die for piercing holes in walls of hollow articles | |
| CN115179014A (en) | Motor shaft transmission gear pressing device and method thereof | |
| GB2160493A (en) | Badge-making press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |