EP1563923A1 - A forming die - Google Patents
A forming die Download PDFInfo
- Publication number
- EP1563923A1 EP1563923A1 EP05250140A EP05250140A EP1563923A1 EP 1563923 A1 EP1563923 A1 EP 1563923A1 EP 05250140 A EP05250140 A EP 05250140A EP 05250140 A EP05250140 A EP 05250140A EP 1563923 A1 EP1563923 A1 EP 1563923A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- pillars
- die part
- additional
- forming
- 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.)
- Granted
Links
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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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/055—Blanks having super-plastic properties
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
Definitions
- the present invention relates to a forming die and in particular to superplastic forming die for forming a blade or vane of a gas turbine engine.
- the present invention provides a forming die comprising a first die part and a second die part, the first die part having a first shaped forming surface, the second die part having a second shaped forming surface, the first die part having at least two pillars, a first one of the at least two pillars being arranged at a first side of the first die part and a second one of the at least two pillars being arranged at a second opposite side of the first die part, the second die part having at least two pillars, a first one of the at least two pillars being arranged at a first side of the second die part and a second one of the at least two pillars being arranged at a second opposite side of the second die part, the pillars on the first die part being locatable on the pillars on the second die part, the pillars on the first and second die part having interlocking means to prevent relative movement between the first die part and the second die part.
- the horizontal faces of the vertical pillars are equal in area.
- the horizontal faces of the additional vertical pillars are equal in area.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
- The present invention relates to a forming die and in particular to superplastic forming die for forming a blade or vane of a gas turbine engine.
- It is known to manufacture a fan blade for a turbofan gas turbine engine by diffusion bonding three titanium workpieces together to form an integral structure and then to supply inert gas into the integral structure to superplastically form the integral structure to shape.
- During the superplastic forming process the diffusion bonded titanium workpieces, or integral structure, are placed in a superplastic forming die and heated to superplastic forming temperature. The superplastic forming die has vertical legs extending down from the upper die, which abut the sides of the lower die to resist the twisting of an upper die part relative to a lower die part due to the contouring of the faces of the die.
- A problem with the die is that the vertical legs deform with continued use, leading to cracking and ultimately failure of the vertical legs. The upper die part twists by up to 16mm from its designed position. This causes deformation, bowing, of the die parts and deformation of the platens upon which the die rests. The quality of the superplastically formed fan blades continuously deteriorates during this time, but this is countered by packing of the kiss faces of the die parts until acceptable fan blades are no longer produced.
- Accordingly the present invention seeks to provide a novel superplastic forming die which reduces, preferably overcomes the above mentioned problems.
- Accordingly the present invention provides a forming die comprising a first die part and a second die part, the first die part having a first shaped forming surface, the second die part having a second shaped forming surface, the first die part having at least two pillars, a first one of the at least two pillars being arranged at a first side of the first die part and a second one of the at least two pillars being arranged at a second opposite side of the first die part, the second die part having at least two pillars, a first one of the at least two pillars being arranged at a first side of the second die part and a second one of the at least two pillars being arranged at a second opposite side of the second die part, the pillars on the first die part being locatable on the pillars on the second die part, the pillars on the first and second die part having interlocking means to prevent relative movement between the first die part and the second die part.
- Preferably the first die part having at least two additional pillars, a first one of the at least two additional pillars being arranged at a first end of the first die part and a second one of the at least two additional pillars being arranged at a second opposite end of the first die part, the second die part having at least two additional pillars, a first one of the at least two additional pillars being arranged at a first end of the second die part and a second one of the at least two additional pillars being arranged at a second opposite end of the second die part, the additional pillars on the first die part being locatable on the additional pillars on the second die part, the additional pillars on the first and second die part having interlocking means to prevent relative movement between the first die part and the second die part.
- Preferably the first die part having at least four pillars, two of the at least four pillars being arranged at a first side of the first die part and two of the at least four pillars being arranged at a second opposite side of the first die part, the second die part having at least four pillars, two of the at least four pillars being arranged at a first side of the second die part and two of the at least four pillars being arranged at a second opposite side of the second die part, the pillars on the first die part being locatable on the pillars on the second die part, the pillars on the first and second die part having interlocking means to prevent relative movement between the first die part and the second die part.
- Preferably the first die part having one of the four pillars arranged at a corresponding one of the corners of the first die part, the second die part having one of the four pillars arranged at a corresponding one of the corners of the second die part.
- Preferably the first die part is an upper die part and the second die part is a lower die part.
- Preferably the pillars extending vertically from the corresponding die part, each pillar having a horizontal face and an adjacent face angled to the horizontal face, the vertical pillars on the upper die part being locatable on the vertical pillars on the lower die part.
- Preferably the horizontal faces of the vertical pillars are equal in area.
- Preferably the adjacent faces of the vertical pillars are equal in area.
- Preferably the horizontal faces of the additional vertical pillars are equal in area.
- Preferably the adjacent faces of the additional vertical pillars are equal in area.
- Preferably the forming die is a superplastic forming die or a hot forming die.
- The present invention will be more fully described by way of example with reference to the accompanying drawings in which:-
- Figure 1 is an exploded perspective view of a superplastic forming die according to the present invention.
- Figure 2 is side view of the superplastic forming die shown in figure 1.
- Figure 3 is a view of one end of the superplastic forming die shown in figure 1.
- Figure 4 is a view of the other end of the superplastic forming die shown in figure 1.
- Figures 5 to 11 alternative pillar arrangements.
-
- A superplastic forming die 10 according to the present invention is shown in figures 1 to 4. The superplastic forming die 10 comprises an
upper die part 12 and alower die part 14. Theupper die part 12 has an upper shaped formingsurface 16 and thelower die part 14 has a lower shaped formingsurface 18. Theupper die part 12 has fourcorners vertical pillar corner upper die part 12. Thelower die part 14 has fourcorners vertical pillar corner lower die part 14. Eachvertical pillar horizontal face vertical pillar adjacent face horizontal face vertical pillars upper die part 12 are locatable on thevertical pillars lower die part 14. - The
horizontal faces vertical pillars adjacent faces vertical pillars - The
upper die part 12 has additionalvertical pillars upper die part 12 and thelower die part 14 has additionalvertical pillars lower die part 14. Each additionalvertical pillar horizontal face vertical pillar adjacent face horizontal face vertical pillars upper die part 12 are locatable on the additionalvertical pillars lower die part 14. - The
horizontal faces vertical pillars adjacent faces vertical pillars - The provision of the equal areas for the horizontal faces and angled faces spreads the loads evenly across the base area of the
die 10. - Each adjacent, angled, face has a minimum area of about 5cm x 12.5cm = 62.5cm-2 and the adjacent, angled, faces have a minimum total area of about 375cm-2. Each horizontal face has a minimum area of about 12.5cm x 12.5cm = 156.25cm-2 and the horizontal faces have a minimum total area of about 937.5cm-2. The angled faces preferably have a hardened surface for example stellite.
- The
adjacent faces upper die part 12 extend away from thehorizontal faces upper die part 12 towards thelower die part 14 and in particular theadjacent faces lower die part 14 and towards the die 10. Theadjacent faces lower die part 14 extend away from thehorizontal faces lower die part 14 away from theupper die part 12 and in particular theadjacent faces upper die part 12 and away from thedie 10. Theadjacent faces adjacent faces adjacent faces adjacent faces - Similarly the
adjacent faces upper die part 12 extend away from thehorizontal faces upper die part 12 towards thelower die part 14 and in particular theadjacent faces lower die part 14 and towards the die 10. Theadjacent faces lower die part 14 extend away from thehorizontal faces lower die part 14 away from theupper die part 12 and in particular theadjacent faces upper die part 12 and away from thedie 10. Theadjacent faces adjacent faces adjacent faces adjacent faces - In use an integral structure comprising diffusion bonded titanium workpieces is placed in the superplastic forming die 10. The upper and lower shaped forming
surfaces 16 an 18 are twisted in order to provide a twisted shape to the integral structure comprising diffusion bonded titanium workpieces for example to form a twisted shape necessary to produce a fan blade, or a fan outlet guide vane. The upper and lower shaped formingsurfaces faces pillars lower die parts faces additional pillars faces lower die parts - The two
vertical pillars opposite corners upper die part 12 and the twovertical pillars opposite corners lower die part 14, with the angled faces being arranged inclined in opposite directions, which resists the twisting forces T. - The advantage of the present invention is that twisting of the die parts is reduced, preferably prevented, and this improves the die stability, die conformance and die life. Also the platens are protected from deformation. Additionally the quality of the fan blades or other article produced by the die is improved.
- It may be possible to arrange the vertical pillars of the upper and lower die parts of the die such that the adjacent, angled, faces of the vertical pillars extend away from the horizontal faces towards the upper die as shown in figure 5.
- Although the adjacent, angled, faces of the pillars have been provided on the sides of the pillars remote from the die parts, it may be possible for the adjacent, angled, faces of the pillars to be provided on the sides of the pillars adjacent the die parts as shown in figures 6 or 7. Alternatively each pillar may have two adjacent angled faces, one on the side of the pillar remote from the die and one on the side of the pillar adjacent the die as shown in figures 8, 9, 10 or 11.
- Although the present invention has been described with reference to a die comprising vertically arranged upper and lower die parts and vertical pillars, it may be equally possible for the die to comprise horizontally arranged first and second die parts and horizontal pillars. In that instance the horizontal pillars have vertical faces and adjacent, angled, faces. Clearly the die parts could be arranged in other orientations.
- Although the present invention has been described with reference to a superplastic forming die it may be used on a hot forming die or other two part die.
- Although the present invention has been described with reference to two pillars on each side and one pillar on each end of each die part, it may be possible to provide only one pillar on each side of each die part. More preferably it may be possible to provide one pillar on each side and one pillar on each end of each die part.
Claims (11)
- A forming die (10) comprising a first die part (12) and a second die part (14), the first die part (12) having a first shaped forming surface (16), the second die part (14) having a second shaped forming surface (18), characterised in that the first die part (12) having at least two pillars (28,30,32,34), a first one (28) of the at least two pillars (28,30,32,34) being arranged at a first side of the first die part (12) and a second one (32) of the at least two pillars (28,30,32,34) being arranged at a second opposite side of the first die part (12), the second die part (14) having at least two pillars (44,46,48,50), a first one (44) of the at least two pillars (44,46,48,50) being arranged at a first side of the second die part (14) and a second one (48) of the at least two pillars (44,46,48,50) being arranged at a second opposite side of the second die part (14), the pillars (28,30,32,34) on the first die part (12) being locatable on the pillars (44,46,48,50) on the second die part (14), the pillars (28,30,32,34,44,46,48,50) on the first and second die part (12,14) having interlocking means (28B, 32B, 44B, 48B) to prevent relative movement between the first die part (12) and the second die part (14).
- A forming die as claimed in claim 1 wherein the first die part (12) having at least two additional pillars (52,54), a first one (52) of the at least two additional pillars (52,54) being arranged at a first end of the first die part (12) and a second one (54) of the at least two additional pillars (52,54) being arranged at a second opposite end of the first die part (12), the second die part (14) having at least two additional pillars (56,58), a first one (56) of the at least two additional pillars (56,58) being arranged at a first end of the second die part (14) and a second one (58) of the at least two additional pillars (56,58) being arranged at a second opposite end of the second die part (14), the additional pillars (52,54) on the first die part (12) being locatable on the additional pillars (56,58) on the second die part (14), the additional pillars (52,54,56,58) on the first and second die parts (12,14) having interlocking means (52B, 54B, 56B, 58B) to prevent relative movement between the first die part (12) and the second die part (14).
- A forming die as claimed in claim 1 or claim 2 wherein the first die part (12) having at least four pillars (28,30,32,34), two (28,34) of the at least four pillars (28,30,32,34) being arranged at a first side of the first die part (12) and two (30,32) of the at least four pillars (28,30,32,34) being arranged at a second opposite side of the first die part (12), the second die part (14) having at least four pillars (44,46,48,50), two (44,50) of the at least four pillars (44,46,48,50) being arranged at a first side of the second die part (14) and two (46,48) of the at least four pillars (44,46,48,50) being arranged at a second opposite side of the second die part (14), the pillars (28,30,32,34) on the first die part (12) being locatable on the pillars (44,46,48,50) on the second die part (14), the pillars (28,30,32,34,44,46,48,50) on the first and second die parts (12,14) having interlocking means (28B,30B,32B,34B,44B,46B,48B,50B) to prevent relative movement between the first die part (12) and the second die part (14).
- A forming die as claimed in claim 3 the first die part (12) having one of the four pillars (28,30,32,34) arranged at a corresponding one of the corners of the first die part (12), the second die part (14) having one of the four pillars (44,46,48,50) arranged at a corresponding one of the corners of the second die part (14).
- A forming die as claimed in any of claims 1 to 4 wherein the first die part (12) is an upper die part and the second die part (14) is a lower die part.
- A forming die as claimed in claim 5 wherein the pillars (28,30,32,34,44,46,48,50) extending vertically from the corresponding die part (12,14), each pillar (28,30,32,34,44,46,48,50) having a horizontal face (28A,30A,32A,34A,44A,46A,48A,50A) and an adjacent face (28B,30B,32B,34B,44B,46B,48B,50B) angled to the horizontal face (28A,30A,32A,34A,44A,46A,48A,50A), the vertical pillars (28,30,32,34)on the upper die part (12) being locatable on the vertical pillars (44,46,48,50) on the lower die part (14).
- A forming die as claimed in claim 5 wherein the horizontal faces (28A,30A,32A,34A,44A,46A,48A,50A) of the vertical pillars (28,30,32,34,44,46,48,50) are equal in area.
- A forming die as claimed in claim 6 or claim 7 wherein the adjacent faces (28B, 30B, 32B, 34B, 44B, 46B, 48B, 50B) of the vertical pillars (28,30,32,34,44,46,48,50) are equal in area.
- A forming die as claimed in claim 6, claim 7 or claim 8 wherein the horizontal faces (52A,54A,56A,58A) of the additional vertical pillars (52,54,56,58) are equal in area.
- A forming die as claimed in claim 6, claim 7, claim 8 or claim 9 wherein the adjacent faces (52B, 54B, 56B, 58B) of the additional vertical pillars (52,54,56,58) are equal in area.
- A forming die as claimed in any of claims 1 to 10 wherein the forming die (10) is a superplastic forming die or a hot forming die.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0402842.9A GB0402842D0 (en) | 2004-02-10 | 2004-02-10 | A forming die |
GB0402842 | 2004-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1563923A1 true EP1563923A1 (en) | 2005-08-17 |
EP1563923B1 EP1563923B1 (en) | 2007-02-07 |
Family
ID=32011586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05250140A Ceased EP1563923B1 (en) | 2004-02-10 | 2005-01-13 | A forming die |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050172694A1 (en) |
EP (1) | EP1563923B1 (en) |
DE (1) | DE602005000531T2 (en) |
GB (1) | GB0402842D0 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2295164A3 (en) * | 2009-09-11 | 2014-12-17 | Rolls-Royce plc | A die former |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6138724A (en) * | 1984-07-31 | 1986-02-24 | Toyoda Gosei Co Ltd | Engagine metal die device |
EP0560528A1 (en) * | 1992-03-07 | 1993-09-15 | British Aerospace Public Limited Company | Manufacture of components by superplastic forming |
US5729901A (en) * | 1995-09-02 | 1998-03-24 | Rolls-Royce Plc | Method of manufacturing hollow articles by superplastic forming and diffusion bonding |
US5797239A (en) * | 1995-03-28 | 1998-08-25 | Mcdonnell Douglas Corporation | Titanium reinforced structural panel having a predetermined shape |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504642A (en) * | 1945-07-23 | 1950-04-18 | Gen Electric | Method for punch press set ups |
US2523358A (en) * | 1945-10-22 | 1950-09-26 | Guy O Conner | Hydraulic antifriction die set |
US2791138A (en) * | 1954-06-11 | 1957-05-07 | Baldwin Lima Hamilton Corp | Forging dies and die-sets |
GB8726155D0 (en) * | 1987-11-07 | 1987-12-09 | Beech B J | Die sets |
US4945954A (en) * | 1989-09-28 | 1990-08-07 | Microelectronics And Computer Technology Corporation | Method and apparatus for aligning mating form tools |
US5823034A (en) * | 1997-10-10 | 1998-10-20 | Hyperform Technologies, Inc. | Superplastic metalforming with self-contained die |
-
2004
- 2004-02-10 GB GBGB0402842.9A patent/GB0402842D0/en not_active Ceased
-
2005
- 2005-01-13 DE DE602005000531T patent/DE602005000531T2/en active Active
- 2005-01-13 EP EP05250140A patent/EP1563923B1/en not_active Ceased
- 2005-01-18 US US11/036,354 patent/US20050172694A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6138724A (en) * | 1984-07-31 | 1986-02-24 | Toyoda Gosei Co Ltd | Engagine metal die device |
EP0560528A1 (en) * | 1992-03-07 | 1993-09-15 | British Aerospace Public Limited Company | Manufacture of components by superplastic forming |
US5797239A (en) * | 1995-03-28 | 1998-08-25 | Mcdonnell Douglas Corporation | Titanium reinforced structural panel having a predetermined shape |
US5729901A (en) * | 1995-09-02 | 1998-03-24 | Rolls-Royce Plc | Method of manufacturing hollow articles by superplastic forming and diffusion bonding |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 196 (M - 497) 10 July 1986 (1986-07-10) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2295164A3 (en) * | 2009-09-11 | 2014-12-17 | Rolls-Royce plc | A die former |
Also Published As
Publication number | Publication date |
---|---|
DE602005000531D1 (en) | 2007-03-22 |
US20050172694A1 (en) | 2005-08-11 |
GB0402842D0 (en) | 2004-03-17 |
EP1563923B1 (en) | 2007-02-07 |
DE602005000531T2 (en) | 2007-11-22 |
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