EP0852522B1 - Quick change tooling method and apparatus - Google Patents
Quick change tooling method and apparatus Download PDFInfo
- Publication number
- EP0852522B1 EP0852522B1 EP96925270A EP96925270A EP0852522B1 EP 0852522 B1 EP0852522 B1 EP 0852522B1 EP 96925270 A EP96925270 A EP 96925270A EP 96925270 A EP96925270 A EP 96925270A EP 0852522 B1 EP0852522 B1 EP 0852522B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- tube
- bend
- clamp
- die set
- 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 - Lifetime
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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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
-
- 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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
- B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member
Definitions
- DE-A-4,225,108 discloses a bending tool including a number of bend dies held in a first magazine and a number of clamp dies held in a second magazine. A clamp die is moved into position to co-operate with a bend die to clamp a workpiece for bending.
- the bend die includes a bore dimensioned to receive the upper end of the spindle 20 and a mounting plate 21 is keyed to the lower end of the spindle 20.
- One or more jam nuts 23 are threaded onto the upper end of the spindle 20 to retain the bend die 34 securely in position.
- the bottom surface of the die as shown in Figure 1, is recessed at 40 to define a keyway aligned with a corresponding keyway in the upper surface of the mounting plate 21 for the purpose of receiving a key 40' when the dies are installed in a manner to be described on the bending machine 10.
- the mandrel itself is standard and includes a series of generally ball-shaped joints 76 as illustrated in Figure 2; and the extension 75 is releasably attached to the locator 70 by a locking pin 78 extending transversely across the counterbore 74 and through a transverse bore in the extension 75.
- Suitable O-rings 80 are disposed at opposite ends of the locking pin as well as between the counterbore 74 and extension 75, and a lube passage 81 extends centrally through the rod 18, intermediate wall of the locator, extension 75 and mandrel 50 to permit injection of a suitable lubricant into the passages 80' leading to the outer periphery of the mandrel 50.
- the mandrel locator 70 facilitates installation of the mandrel into the tube to be bent and remains with the preassembled die set so that all that is necessary is to insert the cylindrical extension 75 into the counterbore 74 and engage locking pin 78.
- a locating key 100 is disposed at the leading end of the base 87 in order to rapidly and accurately locate the die set to a home position on the bending machine.
- the locating key 100 is inserted into the keyway 40 of the bend die 34 to be placed or installed on the bending machine with the electromagnets 96 energized and brought into engagement with the top surfaces of the bend die 34, clamp die 35 and pressure die 36.
- the support arms 92 and 94 are disposed at 90° from one another, and the electromagnets 96 are adjusted along the length of the respective arms to engage spaced surface portions on the top surfaces of the dies 34 to 37.
- the intermediate bar 93 may be employed when necessary to balance heavy off-center die sets, and the electromagnets 96 can be energized from the control panel of the forklift.
- the lift mechanism 84 is specifically adaptable for use in lifting die sets without the necessity of placing lift rings 68 in the die sets, for example, as shown in Figure 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
Claims (21)
- A die set (11) comprised of a bend die (34, 110), clamp die (35, 120) and pressure die (36, 122), adapted to be mounted in assembled relation to a tube bending table (12), and further comprising means (52) releasably connecting said pressure die (36, 122) and clamp die (35, 120) in predetermined relation to one another and to said bend die (34, 100) of said die set.
- A die set according to claim 1, wherein said die set includes a generally cylindrical member (T, T') corresponding to a tube size to be bent, said cylindrical member (T, T') being inserted between facing tube grooves (39, 44, 123, 124) on said clamp die (35, 120) and said pressure die (36, 122) and a tube groove (38, 114) on said bending die (34, 110).
- A die set according to claim 1, wherein said die set (11) includes a generally tubular member (T) corresponding to a tube size to be bent, and a mandrel (50) inserted into said tubular member.
- A die set according to claim 1, wherein said die set includes a wiper die (37), and further means (52, 128) connecting said wiper die (37) to said bend die (34, 110).
- In combination, tube bending apparatus and a plurality of pre-assembled die sets (11) to be interchangeably mounted thereon, each of said die sets (11) including a bend die (34, 110), clamp die (35, 120) and pressure die (36, 122) adapted to be mounted in assembled relation to a spindle (20, 112) of a bending machine table (12) for bending a preselected size of tube (T, T'), further comprising:draw latch means (52, 52') releasably interconnecting said pressure die (36, 122) and clamp die (35, 120) to said bend die (34, 100) in aligned, predetermined relation to one another; andlift means (84) for releasably engaging said die set (11) whereby to simultaneously lift and remove said dies of each said die set (11) from said table (12) and replacing with another die set without adjustment of said die sets.
- A combination according to claim 5 wherein each said die set includes a tube corresponding to the size of tube to be bent inserted between facing tube grooves (39, 44, 123, 124) of said clamp die and said pressure die on one side and a facing groove (38, 114) on said bend die on a diametrically opposed side of said tube.
- A combination according to claim 6 wherein each said die set includes a mandrel inserted into said tubular member and a wiper die connected to said bend die.
- A combination according to claim 7 wherein a wiper die arm (128)releasably interconnects said wiper die to said spindle.
- A combination according to claim 5 wherein said lift means includes locator means to automatically locate said other die set in prealigned relation to said table.
- A combination according to claim 9 wherein said lift means includes spaced, horizontally extending support arms (92, 93, 94), and electromagnetic members (96) on each of said support arms.
- A combination according to claim 10 wherein said lift means is operative to lower said support arms into engagement with a top surface of said die set and to lift said die set by magnetic attraction.
- A combination according to claim 5, wherein said lift means (84) is further operative to mount another of said die sets on said table (12), said handling means (84) including locator means (100) to automatically locate said another of said die sets in prealigned relation to said table (12).
- A combination according to claim 5 wherein said latch means includes a plurality of latch members at spaced horizontal intervals between top surfaces of said clamp die and said bend die and between said pressure die and said wiper die.
- A combination according to claim 5 wherein hanger brackets (60, 60') are mounted on said clamp die and said pressure die, and lift rings (68) are mounted on a top surface of each said die set.
- A combination according to claim 7 wherein a wiper die holder (49) is interconnected between said table and said wiper die.
- A method of mounting and removing die sets in a tube bending machine (10) wherein each of a plurality of die sets (11) is comprised of a bend die (34), clamp die (35) and pressure die (36), the steps comprising:(a) releasably interconnecting said dies of each of said die sets with connectors (52) extending between top surfaces of said clamp die (35) and said bend die (34) and said pressure die (36) and said bend die (34) in prealigned relation to one another for bending a selected size of tube (T, T1);(b) mounting each said die set in assembled relation to a spindle (20, 112) of said machine with said pressure die (36) and said clamp die (35) aligned with one another and with said bend die (34);(c) positioning clamp and pressure die holders (26, 30) into engagement with each said die set (11) and releasing said connectors (52) from engagement with each said die set (11);(d) bending one or more tubes of said selected size by inserting each said tube in succession into each said die set (11); and(e) releasing said clamp and pressure die holders (26, 30) and connecting said connectors to releasably interconnect said dies of each said die set (11) followed by lifting each said die set (11) and removing from said spindle (20,112).
- The method according to claim 16 including the further step of replacing each said die set (11) with another die set (11) and repeating the sequence of steps (a) through (e) above.
- The method according to claim 16 wherein one of said tubes remains inserted between said dies of each said die set (11) when lifted and removed from said spindle support (20,112).
- The method according to claim 16 wherein each of said die sets (11) includes a wiper die (37) connected to said bend die (34) and further including the step of releasably interconnecting said pressure die (36) to said wiper die (37).
- The method according to claim 16 wherein step (e) is characterized by electromagnetically lifting and lowering each of said die set.
- The method according to claim 18 including the step of inserting a mandrel (50) into each said tube of said die set when said die set is mounted on said spindle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1996/011180 WO1998000250A1 (en) | 1996-07-01 | 1996-07-01 | Quick change tooling method and apparatus |
CA002230271A CA2230271A1 (en) | 1996-07-01 | 1996-07-01 | Quick change tooling method and apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0852522A1 EP0852522A1 (en) | 1998-07-15 |
EP0852522A4 EP0852522A4 (en) | 1999-12-15 |
EP0852522B1 true EP0852522B1 (en) | 2002-11-06 |
Family
ID=25680063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96925270A Expired - Lifetime EP0852522B1 (en) | 1996-07-01 | 1996-07-01 | Quick change tooling method and apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0852522B1 (en) |
CA (1) | CA2230271A1 (en) |
WO (1) | WO1998000250A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7293444B2 (en) | 2005-03-08 | 2007-11-13 | Wafios Aktiengesellschaft | Bending apparatus for rod-shaped and tubular workpieces |
US7721582B2 (en) | 2006-04-07 | 2010-05-25 | Wafios Aktiengesellschaft | Bending machine for rod-shaped workpieces made from wire, tubular material or the like |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9625067B2 (en) | 2009-09-01 | 2017-04-18 | Sea Ng Corporation | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
US20110049879A1 (en) * | 2009-09-01 | 2011-03-03 | Patrick John Fitzpatrick | Clamp suitable for increasing the fatigue life of the butt welds of a pipe pressure vessel which is subsequently bent |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2222107A1 (en) * | 1972-05-05 | 1973-11-22 | Ludwig Lang | Cold bending arrangement - employing only one bearing block and housing for all parts |
EP0076783B1 (en) * | 1981-10-01 | 1985-04-03 | FISCHER, Fritz | Machine for bending tubes and sectional bars |
US5148695A (en) * | 1991-11-21 | 1992-09-22 | Ellis Harry S | Adjustable pipe and tubing bender |
DE4225108A1 (en) * | 1992-07-30 | 1994-02-03 | Walter E Spaeth | Pipe bending press for hollow profiles with varying bending radii and cross=sections - has automatically exchangeable clamp jaws and bending tools in revolving magazines and has tool change device |
US5284041A (en) * | 1993-05-10 | 1994-02-08 | Amana Refrigeration, Inc. | Method for bending tubes using split die |
US5337590A (en) * | 1993-12-27 | 1994-08-16 | Schuchert Eugene H | Method and apparatus for bending tubes using split bend die |
-
1996
- 1996-07-01 WO PCT/US1996/011180 patent/WO1998000250A1/en active IP Right Grant
- 1996-07-01 CA CA002230271A patent/CA2230271A1/en not_active Abandoned
- 1996-07-01 EP EP96925270A patent/EP0852522B1/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7293444B2 (en) | 2005-03-08 | 2007-11-13 | Wafios Aktiengesellschaft | Bending apparatus for rod-shaped and tubular workpieces |
US7721582B2 (en) | 2006-04-07 | 2010-05-25 | Wafios Aktiengesellschaft | Bending machine for rod-shaped workpieces made from wire, tubular material or the like |
Also Published As
Publication number | Publication date |
---|---|
WO1998000250A1 (en) | 1998-01-08 |
CA2230271A1 (en) | 1998-01-08 |
EP0852522A4 (en) | 1999-12-15 |
EP0852522A1 (en) | 1998-07-15 |
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