EP2164652B1 - Assembly and method for press forming a deformable material - Google Patents
Assembly and method for press forming a deformable material Download PDFInfo
- Publication number
- EP2164652B1 EP2164652B1 EP08748025.7A EP08748025A EP2164652B1 EP 2164652 B1 EP2164652 B1 EP 2164652B1 EP 08748025 A EP08748025 A EP 08748025A EP 2164652 B1 EP2164652 B1 EP 2164652B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- dies
- die array
- array
- profile
- 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.)
- Active
Links
Images
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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
Definitions
- the present invention relates to an assembly for press forming a deformable material and a method that may employ such an assembly. More particularly, the invention provides an assembly for press forming a deformable material that includes an opposing pair of die arrays, each die array having a complementary profile determined by a desired final configuration of the formed material.
- the method which may advantageously make use of the assembly of the invention, typically ensures that the deformable material is gradually deformed to provide the desired final configuration. More particularly, the method generally aims to deliver pressure to the deformable material along a processing length of the material such that the material is continuously deformed through the processing length.
- the invention relates to an assembly for press forming a deformable material that includes a single die array and a complementary second die, which does not necessarily take the form of a die array. Methods employing such an assembly are also provided. Still further, the invention relates to a die set for use in an assembly for press forming a deformable material and a method of fabricating such a die set.
- roll forming includes passing a continuous sheet 20 through a series of spaced roll sets 21a through 21f. Each roll set 21 progressively deforms the sheet 20 to the desired final profile 22. Each roll set 21 includes at least one upper roll 23a through 23f, and at least one lower roll 24a through 24f. In some instances, side rolls 25 may also be provided, depending on the desired final profile 22.
- the rolls 23, 24 and 25 are designed such that the sheet of material 20 is progressively deformed to the final profile 22.
- the roll sets 21 In order to achieve this deformation, the roll sets 21 must be spaced at predetermined distances to facilitate sufficient deformation and relaxation between the roll sets 21. This disadvantageously results in wasted deformation energy.
- the roll forming process inherently involves strain path differences due to unnecessary axial bending and stretching between each roll set 21. Axial plastic bending and stretching lead to product defects as shown in Figures 3A through 3D . These defects include so-called edge wave ( Figure 3A ), flare ( Figure 3B ), sweep or camber ( Figure 3C ) and twist ( Figure 3D ).
- Roll forming also has disadvantages in that the surface of the sheet of material being formed is placed under stresses due to stretching of the material. In the case of a coated metal, for example, this may have deleterious effects on the quality of the surface finish.
- Roll forming has another disadvantage in that the distance between the first roll set 21a and the last roll set, in this case 21f, is relatively large. As a result, the space needed to house a roll forming assembly is substantial, particularly when forming of complex profiles is required. Moreover, a specific set up of roll sets 21 is required for each desired final profile 22. Consequently, it is not a simple process to set up a roll forming assembly, nor is it possible to simply exchange roll sets 21 to produce a different final profile 22.
- German Offenlegungsschrift No. 2 423 279 describes a press forming assembly that includes an upper die and a lower die.
- Each of the upper and lower dies has a profile extending longitudinally along the length of the dies, the profiles of the upper and lower dies being complementary and designed to produce a desired final profile. More particularly, the profiles of the upper and lower dies are such that a sheet of deformable material, generally metal, fed to the assembly is progressively deformed along the longitudinal length of the sheet of material.
- Deformation of the sheet of material is achieved by pressing the upper and lower dies together, for example using an eccentric cam (illustrated in Figure 19 of this document), or using pivoting arms attached to the sides of the upper and lower dies (illustrated in Figure 28 of this document).
- European Patent No. 0 384 287 describes an assembly that includes upper and lower dies that are designed to progressively deform a sheet of material by pressing the dies together using an eccentric cam.
- the upper and lower dies engage and disengage the sheet material to be deformed along a processing length.
- the sheet is engaged, having been displaced horizontally through the upper and lower die set during the disengagement operation, the sheet is progressively deformed to the final profile.
- the present invention aims to provide an alternative press forming assembly and method to those described above.
- the assembly and method of the invention advantageously avoid or alleviate problems associated with unnecessary deformation of the deformable material that may be observed during disengagement of the material during processing.
- the invention also aims to provide a method of fabricating a die set suitable for use in such an assembly and method.
- sequential engagement of the deformable material indicates that the deformable material is engaged by dies of the first die array and the second die array in sequence so as to avoid or at least alleviate unnecessary deformation of the deformable material.
- the dies of the first die array and the second die array do not simultaneously engage and disengage the deformable material along the entire processing length of the deformable material.
- Sequential engagement should not be inferred as meaning ordered engagement and may include random engagement.
- the first die array advantageously includes a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies sequentially engaging the sheet of deformable material along the processing length in use. It will be appreciated, however, that the invention is not so limited.
- the first die array may include tertiary and quaternary sets of dies, and so on, if desired.
- the preliminary set of dies includes odd numbered dies within the first die array and the secondary set of dies includes even numbered dies within the first die array.
- the odd numbered dies and even numbered dies of the first die array are advantageously separately driven by the drive. It will be appreciated that any combination of dies may be employed to form the preliminary set of dies and the secondary set of dies. This may be dependent on the predetermined profile that is desired after forming of the deformable material.
- the dies of the preliminary die set may be associated with one another by any suitable means.
- the odd numbered dies of the first die array are associated with a first drive plate and the even numbered dies of the first die array are associated with a second drive plate, each of the first drive plate and second drive plate being driven by the drive.
- the first drive plate is defined by a pair of longitudinal plates extending along transverse edges of the first die array
- the second drive plate is defined by a longitudinally extending central plate that is longitudinally straddled by the pair of longitudinal plates defining the first drive plate.
- the first die array and the second die array each include a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies of the first die array and the second die array sequentially engaging the deformable material along the processing length in use.
- the preliminary set of dies of the first die array and the second die array may again include odd numbered dies within the first die array and the second die array respectively
- the secondary set of dies of the first die array and the second die array may include even numbered dies within the first die array and the second die array respectively.
- the odd numbered dies and even numbered dies of the first die array and, now also, the second die array may be separately and respectively driven by the drive.
- the various die sets may be associated with one another as desired by any suitable means.
- the odd numbered dies of the first die array are associated with a first drive plate and the even numbered dies of the first die array are associated with a second drive plate
- the odd numbered dies of the second die array are associated with a third drive plate and the even numbered dies of the second die array are associated with a fourth drive plate, each of the drive plates being driven by the drive.
- the various drive plates may take a similar form to that described above.
- the dies of the first die array and the second die array are driven in linear reciprocating motion.
- the linear motion may, for example, be within the planes of the individual dies of the die arrays.
- the linear motion may be at an inclined or declined angle to the planes of the individual dies.
- the reciprocating motion may be an orbital or elliptical reciprocating motion.
- the reciprocating motion of the odd numbered dies of the first die array and the second die array is offset relative to the reciprocating motion of the even numbered dies of the first die array and the second die array.
- Such an arrangement advantageously facilitates drawing of the deformable material through the assembly.
- the orientation of the first die array and the second die array is not particularly limited.
- the two arrays may be disposed in vertical planes.
- the first die array and the second die array are preferably disposed in horizontal planes.
- the assembly includes:
- the third die array and the fourth die array When the first die array and second die array are disposed in generally horizontal planes, the third die array and the fourth die array will generally be disposed in a plane that is offset, or at an angle to, the horizontal plane. In some instances, the third die array and the fourth die array are disposed in vertical planes. This advantageously enables forming of a wider variety of profiles from the deformable material.
- the assembly includes a guide for guiding the deformable material between the first die array and the second die array.
- the drive of the assembly is not particularly limited and variations would be readily appreciated by those of skill in the art.
- the drive may be a mechanical or hydraulic drive.
- the drive includes a mechanical drive with gearing.
- the above description relates to an assembly including at least one pair of die arrays that cooperate with one another and complement one another, and that may be useful in forming a deformable material to a desired profile. It is also envisaged that in some instances, for example when forming less complex profiles, it may be possible to effectively produce a desired result with only one die array matched with a complementary solid die.
- an assembly for press forming a deformable material according to claim 13 there is provided an assembly for press forming a deformable material according to claim 13.
- the second die is formed of a resilient flexible material that deforms to a complementary profile to the first die profile on engagement with the die array of the first die.
- suitable resilient flexible materials may include a hard rubber material or a relatively stiff deformable plastic material.
- the present invention also provides a die set according to claim 12.
- the first die array and the second die array each include a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies of the first die array being separately mounted and the preliminary set of dies and the secondary set of dies of the second die array being separately mounted.
- the preliminary set of dies of the first die array and the second die array may include odd numbered dies within the first die array and the second die array respectively
- the secondary set of dies of the first die array and the second die array may include even numbered dies within the first die array and the second die array respectively.
- the odd numbered dies of the first die array may be associated with a first drive plate and the even numbered dies of the first die array may be associated with a second drive plate, and the odd numbered dies of the second die array may be associated with a third drive plate and the even numbered dies of the second die array may be associated with a fourth drive plate.
- the second die is formed of a resilient flexible material that deforms to a complementary profile to the first die profile on engagement with the die array of the first die.
- the deformable material is not particularly limited, provided that it may be formed into the desired final profile.
- the deformable material may be a low gauge sheet of material, or may be a higher gauge plate of material. It will be appreciated that whilst the gauge of material may be selected from a wide range, the assemblies and dies described above may suitably be employed without alteration of their general design. For example, heavier gauge material may simply necessitate the use of a more powerful drive for the assembly or a larger die set, compared with that which may be required for lower gauge sheet material.
- the deformable material may include any material suitable for deformation into a final desired profile.
- the deformable material may be a sheet or plate of metal, such as aluminium, brass, copper, cold rolled steel, mild steel, tin, nickel, magnesium, titanium and so on.
- the deformable material may be a sheet of thermoplastic material which may optionally be fibre-reinforced. Suitable thermoplastic materials will be readily appreciated by those in the art. For example, these may include polyethylene, polypropylene, polycarbonate, polyethylene terephthalate, polyacrylate, polymethacrylate and so on.
- the assembly includes a heater for preheating the deformable material.
- the dies of the assembly may be heated to impart heat to the deformable material during deformation.
- the invention not only relates to an assembly for press forming a deformable material, but also to die sets for use in such assemblies. These die sets may be designed as needed for a particular desired final profile. During development of the invention, an advantageous method of fabricating such die sets has also been developed.
- the invention provides a method of fabricating a die set according to claim 15.
- Mapping of the profile of the die set may be achieved by any suitable means. Generally, mapping will be achieved using differential geometry taking into account the path from the initial profile to the final profile. Particularly, computer based mapping may be suitably employed in accordance with this aspect of the invention. Mapping is preferably conducted such that each portion of the deformable material passes the same distance through the die set during the deformation process. This may advantageously avoid issues associated with excessive stretching of the deformable material, for example damage to surface treatments that may be applied to the material.
- mapping be carried out such that redundant deformation is minimized, or such that the length of the profile of the die set is minimized.
- Forming of the die set, including first and second dies that define the profile of the die set may be achieved by any suitable method known in the art.
- the die set is formed by casting of a suitable material.
- the die set may be machined.
- splitting of at least one of the first die and the second die may be achieved by any suitable means.
- this may be achieved using an electrode wire cutter (i.e. spark cutting), or other suitable cutting apparatus.
- sequential engagement may be achieved by any suitable means.
- the plurality of dies of the first die array and the plurality of dies of the second die array sequentially engage the deformable material in an offset reciprocating motion along the processing length of the deformable material.
- the reciprocating motion of odd numbered dies of the first die array and the second die array may be offset relative to the reciprocating motion of even numbered dies of the first die array and the second die array to facilitate sequential engagement of the deformable material along the processing length.
- the method may include post working of the deformable material after it is press formed to the predetermined profile.
- post working may include, roll forming, straightening and/or welding of the deformable material.
- Other alternatives for post working would be readily appreciated by those of skill in the art.
- the method may include heating the deformable material to a predetermined temperature prior to and/or during deformation of the deformable material.
- a press forming assembly 40 is illustrated that includes an upper die array 41 and a lower die array 42.
- a sheet of deformable material 43 which will be referred to hereafter as a sheet of metal for convenience, is fed between the upper die array 41 and the lower die array 42 and is progressively deformed to a desired final profile 44.
- the upper and lower die arrays 41 and 42 each include a plurality of individual dies.
- the upper die array is defined by a preliminary set of dies made up of odd numbered dies 45 in the upper dies array 41.
- the odd number dies 45 are supported by a drive plate defined by two longitudinally extending plates 46a and 46b.
- the plates 46a and 46b extend longitudinally along the transverse edges of the odd numbered dies 45 and are engaged by a drive to facilitate driven reciprocation of the odd numbered dies 45.
- a secondary set of dies made up of even numbered dies 47 in the upper die array 41 is also provided.
- the even numbered dies 47 are supported by a drive plate 48 that extends longitudinally along the even numbered dies 47 and that is longitudinally straddled by the plates 46a and 46b that support the odd numbered dies 45.
- the drive plate 48 is engaged by a drive to facilitate driven reciprocation of the even numbered dies 47.
- the lower die array 42 includes a primary set of dies made up of odd numbered dies 49 and a secondary set of dies made up of even numbered dies 50.
- the odd numbered dies 49 are associated with, and supported by, a drive plate 51, while the even numbered dies 50 are supported by a drive plate defined by longitudinally extending plates 52a and 52b.
- the reciprocal motion of a pair of odd numbered dies 45 and 49 and a pair of even numbered dies 47 and 50 is illustrated.
- the die pairs 45, 49 and 47, 50 are driven such that they operate in an offset reciprocating motion. More particularly, the die pairs 45, 49 and 47, 50 sequentially engage the metal sheet 43 passing through the upper and lower die sets. This advantageously facilitates progressive deformation of the metal sheet 43 while minimising unnecessary deformation due to disengagement of the die arrays with the sheet 43.
- dies 45 and 49 are in engagement with the sheet of metal 43 as it enters the assembly, while dies 47 and 50 are disengaged from the sheet of metal 43.
- the dies are all disengaged from the sheet 43.
- dies located further along the die arrays of the assembly will be engaged with the sheet 43.
- the offset reciprocating motion of the dies is evidenced by the illustration in the third frame of Figure 6 .
- the dies 45 and 49 that were previously engaged with the sheet of metal 43 have totally disengaged the sheet of metal 43, while the dies 47 and 50 that were previously disengaged from the sheet of metal 43, have now engaged the sheet of metal 43.
- This movement of the dies within the upper and lower die arrays advantageously aids in feeding or drawing the sheet of metal 43 through the assembly.
- the upper die array 70 includes a preliminary die set made up of odd numbered dies 71, and a secondary die set made up of even numbered dies 72.
- the dies 71 and 72 define a die profile 73 along the longitudinal, or processing, length of the upper die array 70.
- the die profile 73 has a relatively low profile at a feed end 74, and a relatively high profile at an exit end 75. As such, a sheet of metal is progressively deformed along the processing length of the upper die array 70.
- the lower die array 80 includes a preliminary die set made up of odd numbered dies 81, and a secondary die set made up of even numbered dies 82.
- the dies 81 and 82 define a die profile 83 along the longitudinal, or processing, length of the lower die array 80.
- the die profile 83 again has a relatively low profile at a feed end 84, and a relatively high profile at an exit end 85.
- the die profiles 73 and 83 are complementary with one another.
- the profiles 73 and 83 are complementary along the processing length of the die arrays 70 and 80.
- the profiles 73 and 83 are such that the sheet of metal being passed between the die arrays 70 and 80 is progressively deformed to the desired final profile.
- the sequential engagement of the sheet of metal to be formed by the individual dies 71, 72, 81 and 82 of the upper die array 70 and lower die array 80 alleviate or eliminate spring back of the sheet of metal during forming. This is generally due to the fact that at least one or more dies is in engagement with the sheet of metal at any one time during forming.
- the assembly also advantageously reduces or eliminates axial stretching and bending of the sheet of metal during forming.
- the assembly of the invention has various other advantages, including reduced power consumption due to the decrease in wasted deformation energy.
- the assembly is smaller in size than its roll forming counterparts. As such, the assembly has a smaller "foot print" which will result in lower production costs. It is anticipated that the assembly of the invention will also provide for lower maintenance costs and operation costs.
Description
- The present invention relates to an assembly for press forming a deformable material and a method that may employ such an assembly. More particularly, the invention provides an assembly for press forming a deformable material that includes an opposing pair of die arrays, each die array having a complementary profile determined by a desired final configuration of the formed material. The method, which may advantageously make use of the assembly of the invention, typically ensures that the deformable material is gradually deformed to provide the desired final configuration. More particularly, the method generally aims to deliver pressure to the deformable material along a processing length of the material such that the material is continuously deformed through the processing length. In alternative aspects, the invention relates to an assembly for press forming a deformable material that includes a single die array and a complementary second die, which does not necessarily take the form of a die array. Methods employing such an assembly are also provided. Still further, the invention relates to a die set for use in an assembly for press forming a deformable material and a method of fabricating such a die set.
- Systems and assemblies for forming a deformable material, such as a sheet of metal, into a desired profile are known. One such system, known as roll forming, is a well established process used in many industries, such as automotive and construction industries, to produce simple and complex shapes from a sheet of metal. Examples of some
profiles Figure 1 . - With reference to
Figures 2A through 2C , roll forming includes passing acontinuous sheet 20 through a series of spacedroll sets 21a through 21f. Each roll set 21 progressively deforms thesheet 20 to the desiredfinal profile 22. Each roll set 21 includes at least oneupper roll 23a through 23f, and at least onelower roll 24a through 24f. In some instances,side rolls 25 may also be provided, depending on the desiredfinal profile 22. - As mentioned above, the
rolls 23, 24 and 25 are designed such that the sheet ofmaterial 20 is progressively deformed to thefinal profile 22. In order to achieve this deformation, the roll sets 21 must be spaced at predetermined distances to facilitate sufficient deformation and relaxation between the roll sets 21. This disadvantageously results in wasted deformation energy. Also, the roll forming process inherently involves strain path differences due to unnecessary axial bending and stretching between each roll set 21. Axial plastic bending and stretching lead to product defects as shown inFigures 3A through 3D . These defects include so-called edge wave (Figure 3A ), flare (Figure 3B ), sweep or camber (Figure 3C ) and twist (Figure 3D ). Roll forming also has disadvantages in that the surface of the sheet of material being formed is placed under stresses due to stretching of the material. In the case of a coated metal, for example, this may have deleterious effects on the quality of the surface finish. - Roll forming has another disadvantage in that the distance between the first roll set 21a and the last roll set, in this
case 21f, is relatively large. As a result, the space needed to house a roll forming assembly is substantial, particularly when forming of complex profiles is required. Moreover, a specific set up of roll sets 21 is required for each desiredfinal profile 22. Consequently, it is not a simple process to set up a roll forming assembly, nor is it possible to simply exchange roll sets 21 to produce a differentfinal profile 22. -
- German Offenlegungsschrift No.
2 423 279 describes a press forming assembly that includes an upper die and a lower die. Each of the upper and lower dies has a profile extending longitudinally along the length of the dies, the profiles of the upper and lower dies being complementary and designed to produce a desired final profile. More particularly, the profiles of the upper and lower dies are such that a sheet of deformable material, generally metal, fed to the assembly is progressively deformed along the longitudinal length of the sheet of material. - Deformation of the sheet of material is achieved by pressing the upper and lower dies together, for example using an eccentric cam (illustrated in Figure 19 of this document), or using pivoting arms attached to the sides of the upper and lower dies (illustrated in Figure 28 of this document).
- Likewise, European Patent No.
0 384 287 describes an assembly that includes upper and lower dies that are designed to progressively deform a sheet of material by pressing the dies together using an eccentric cam. - In both instances, the upper and lower dies engage and disengage the sheet material to be deformed along a processing length. As the sheet is engaged, having been displaced horizontally through the upper and lower die set during the disengagement operation, the sheet is progressively deformed to the final profile.
- The present invention aims to provide an alternative press forming assembly and method to those described above. The assembly and method of the invention advantageously avoid or alleviate problems associated with unnecessary deformation of the deformable material that may be observed during disengagement of the material during processing. The invention also aims to provide a method of fabricating a die set suitable for use in such an assembly and method.
- According to one aspect of the invention there is provided an assembly for press forming a deformable material according to
claim 1. - As used herein, sequential engagement of the deformable material indicates that the deformable material is engaged by dies of the first die array and the second die array in sequence so as to avoid or at least alleviate unnecessary deformation of the deformable material. The dies of the first die array and the second die array do not simultaneously engage and disengage the deformable material along the entire processing length of the deformable material. Sequential engagement should not be inferred as meaning ordered engagement and may include random engagement.
- In order to achieve sequential engagement of the deformable material along the processing length, the first die array advantageously includes a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies sequentially engaging the sheet of deformable material along the processing length in use. It will be appreciated, however, that the invention is not so limited. For example, the first die array may include tertiary and quaternary sets of dies, and so on, if desired.
- Taking the example of an array including a preliminary set of dies and a secondary set of dies, in one embodiment the preliminary set of dies includes odd numbered dies within the first die array and the secondary set of dies includes even numbered dies within the first die array. In that case, the odd numbered dies and even numbered dies of the first die array are advantageously separately driven by the drive. It will be appreciated that any combination of dies may be employed to form the preliminary set of dies and the secondary set of dies. This may be dependent on the predetermined profile that is desired after forming of the deformable material.
- The dies of the preliminary die set, and likewise those of the secondary die set, may be associated with one another by any suitable means. In one embodiment, the odd numbered dies of the first die array are associated with a first drive plate and the even numbered dies of the first die array are associated with a second drive plate, each of the first drive plate and second drive plate being driven by the drive. In a particular embodiment, the first drive plate is defined by a pair of longitudinal plates extending along transverse edges of the first die array, and the second drive plate is defined by a longitudinally extending central plate that is longitudinally straddled by the pair of longitudinal plates defining the first drive plate.
- In certain embodiments, it is preferred that the first die array and the second die array each include a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies of the first die array and the second die array sequentially engaging the deformable material along the processing length in use. In that case, the preliminary set of dies of the first die array and the second die array may again include odd numbered dies within the first die array and the second die array respectively, and the secondary set of dies of the first die array and the second die array may include even numbered dies within the first die array and the second die array respectively.
- As was the case in accordance with the earlier described embodiment, the odd numbered dies and even numbered dies of the first die array and, now also, the second die array may be separately and respectively driven by the drive.
- Once again, the various die sets may be associated with one another as desired by any suitable means. In one embodiment, the odd numbered dies of the first die array are associated with a first drive plate and the even numbered dies of the first die array are associated with a second drive plate, and the odd numbered dies of the second die array are associated with a third drive plate and the even numbered dies of the second die array are associated with a fourth drive plate, each of the drive plates being driven by the drive. The various drive plates may take a similar form to that described above.
- It will be appreciated that in order to effect sequential engagement of the deformable material with the dies of the first and second die arrays, some form of reciprocating motion of the dies will be required. According to one embodiment, the dies of the first die array and the second die array are driven in linear reciprocating motion. The linear motion may, for example, be within the planes of the individual dies of the die arrays. Alternatively, the linear motion may be at an inclined or declined angle to the planes of the individual dies. Still further, according to other embodiments, the reciprocating motion may be an orbital or elliptical reciprocating motion. Preferably, the reciprocating motion of the odd numbered dies of the first die array and the second die array is offset relative to the reciprocating motion of the even numbered dies of the first die array and the second die array. Such an arrangement advantageously facilitates drawing of the deformable material through the assembly.
- The orientation of the first die array and the second die array is not particularly limited. For example, the two arrays may be disposed in vertical planes. However, for convenience, the first die array and the second die array are preferably disposed in horizontal planes.
- In some instances, particularly when forming more complex profiles, it may be desirable to include additional die arrays to effect further forming of the deformable material. For example, in one embodiment, the assembly includes:
- a third die array including a plurality of dies, the third die array defining a third die profile;
- a fourth die array that is complementary with the third die array and including a plurality of dies, the fourth die array defining a fourth die profile that is complementary with the third die profile; and
- a drive for driving at least one of the third die array and the fourth die array;
- wherein, in use, the plurality of dies of the third die array and the plurality of dies of the fourth die array sequentially engage the deformable material, preformed by the first die array and the second die array, along a processing length to deform the deformable material to a final profile.
- When the first die array and second die array are disposed in generally horizontal planes, the third die array and the fourth die array will generally be disposed in a plane that is offset, or at an angle to, the horizontal plane. In some instances, the third die array and the fourth die array are disposed in vertical planes. This advantageously enables forming of a wider variety of profiles from the deformable material.
- In some instances, it may be difficult to feed the deformable material into the assembly. As such, in a preferred embodiment the assembly includes a guide for guiding the deformable material between the first die array and the second die array.
- The drive of the assembly is not particularly limited and variations would be readily appreciated by those of skill in the art. For example, the drive may be a mechanical or hydraulic drive. In certain embodiments, the drive includes a mechanical drive with gearing.
- The above description relates to an assembly including at least one pair of die arrays that cooperate with one another and complement one another, and that may be useful in forming a deformable material to a desired profile. It is also envisaged that in some instances, for example when forming less complex profiles, it may be possible to effectively produce a desired result with only one die array matched with a complementary solid die.
- As such, according to an alternative embodiment of the invention there is provided an assembly for press forming a deformable material according to claim 13.
- According to this aspect, the second die is formed of a resilient flexible material that deforms to a complementary profile to the first die profile on engagement with the die array of the first die. For example, it is envisaged that suitable resilient flexible materials may include a hard rubber material or a relatively stiff deformable plastic material.
- It will be appreciated that the embodiments and features as described above in relation to the previous aspect of the invention will likewise be applicable to this aspect of the invention. As such, for convenience, reference is made thereto without repeating each and every feature in respect of this aspect of the invention.
- The inventors have identified various advantages that may be provided by forming a deformable material to a desired profile using arrays of dies, as will be described in more detail below. Accordingly, the present invention also provides a die set according to
claim 12. - As will be gleaned from the above description of the assembly of the invention according to
claim 1, in certain embodiments the first die array and the second die array each include a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies of the first die array being separately mounted and the preliminary set of dies and the secondary set of dies of the second die array being separately mounted. - Again, the preliminary set of dies of the first die array and the second die array may include odd numbered dies within the first die array and the second die array respectively, and the secondary set of dies of the first die array and the second die array may include even numbered dies within the first die array and the second die array respectively.
- Likewise, as previously described, the odd numbered dies of the first die array may be associated with a first drive plate and the even numbered dies of the first die array may be associated with a second drive plate, and the odd numbered dies of the second die array may be associated with a third drive plate and the even numbered dies of the second die array may be associated with a fourth drive plate.
- According to an alternative aspect of the invention there is provided a die set according to claim 14.
- As was the case above, the second die is formed of a resilient flexible material that deforms to a complementary profile to the first die profile on engagement with the die array of the first die.
- The nature of the deformable material is not particularly limited, provided that it may be formed into the desired final profile. For example, the deformable material may be a low gauge sheet of material, or may be a higher gauge plate of material. It will be appreciated that whilst the gauge of material may be selected from a wide range, the assemblies and dies described above may suitably be employed without alteration of their general design. For example, heavier gauge material may simply necessitate the use of a more powerful drive for the assembly or a larger die set, compared with that which may be required for lower gauge sheet material.
- Likewise, the deformable material may include any material suitable for deformation into a final desired profile. For example, the deformable material may be a sheet or plate of metal, such as aluminium, brass, copper, cold rolled steel, mild steel, tin, nickel, magnesium, titanium and so on. Alternatively, the deformable material may be a sheet of thermoplastic material which may optionally be fibre-reinforced. Suitable thermoplastic materials will be readily appreciated by those in the art. For example, these may include polyethylene, polypropylene, polycarbonate, polyethylene terephthalate, polyacrylate, polymethacrylate and so on.
- If the deformable material is less malleable at room temperature, it may be desirable to heat the deformable material prior to and/or during the deformation process. As such, in certain embodiments the assembly includes a heater for preheating the deformable material. Likewise, in certain embodiments the dies of the assembly may be heated to impart heat to the deformable material during deformation.
- As mentioned above, the invention not only relates to an assembly for press forming a deformable material, but also to die sets for use in such assemblies. These die sets may be designed as needed for a particular desired final profile. During development of the invention, an advantageous method of fabricating such die sets has also been developed.
- Accordingly, in a further aspect the invention provides a method of fabricating a die set according to claim 15.
- Mapping of the profile of the die set may be achieved by any suitable means. Generally, mapping will be achieved using differential geometry taking into account the path from the initial profile to the final profile. Particularly, computer based mapping may be suitably employed in accordance with this aspect of the invention. Mapping is preferably conducted such that each portion of the deformable material passes the same distance through the die set during the deformation process. This may advantageously avoid issues associated with excessive stretching of the deformable material, for example damage to surface treatments that may be applied to the material.
- It is also preferred that the mapping be carried out such that redundant deformation is minimized, or such that the length of the profile of the die set is minimized. Forming of the die set, including first and second dies that define the profile of the die set, may be achieved by any suitable method known in the art. In a particular embodiment, the die set is formed by casting of a suitable material. Alternatively, the die set may be machined.
- Similarly, splitting of at least one of the first die and the second die may be achieved by any suitable means. For example, this may be achieved using an electrode wire cutter (i.e. spark cutting), or other suitable cutting apparatus.
- According to another aspect of the invention there is provided a method for press forming a deformable material using an assembly according to any one of
claims 1 to 11 and 13. - As previously noted, sequential engagement may be achieved by any suitable means. In one embodiment, the plurality of dies of the first die array and the plurality of dies of the second die array sequentially engage the deformable material in an offset reciprocating motion along the processing length of the deformable material. For example, the reciprocating motion of odd numbered dies of the first die array and the second die array may be offset relative to the reciprocating motion of even numbered dies of the first die array and the second die array to facilitate sequential engagement of the deformable material along the processing length.
- In some instances, it may be desirable to work the deformable material after it is deformed to the predetermined profile. As such, in certain embodiments the method may include post working of the deformable material after it is press formed to the predetermined profile. For example, post working may include, roll forming, straightening and/or welding of the deformable material. Other alternatives for post working would be readily appreciated by those of skill in the art.
- As noted above, in some instances it may be desirable to preheat the deformable material before it is subjected to the deformation process, or to apply heat to the deformable material during the deformation process. As such, the method may include heating the deformable material to a predetermined temperature prior to and/or during deformation of the deformable material.
- The present invention will now be described in more detail with reference to the accompanying drawings. It should be realised that the following detailed description is provided for exemplification only and should not be construed as limiting on the invention in any way. In the drawings:
-
Figure 1 illustrates some simple profiles of formed sheet material; -
Figures 2A to 2C illustrate a conventional roll forming assembly; -
Figures 3A to 3D illustrate defects associated with conventional roll forming processes; -
Figure 4 illustrates a press forming assembly according to an embodiment of the invention; -
Figure 5 illustrates a sectional side view of a press forming assembly according to an embodiment of the invention; -
Figure 6 illustrates an example of the progressive sequential engagement of dies of a press forming assembly according to embodiments of the invention; -
Figure 7 illustrates a die array according to one embodiment of the invention; -
Figure 8 illustrates a die array that is complementary to the die array ofFigure 7 ; and -
Figure 9 illustrates the die arrays ofFigures 7 and8 in combination. - Referring to
Figure 4 , apress forming assembly 40 is illustrated that includes anupper die array 41 and alower die array 42. A sheet ofdeformable material 43, which will be referred to hereafter as a sheet of metal for convenience, is fed between theupper die array 41 and thelower die array 42 and is progressively deformed to a desiredfinal profile 44. - The upper and lower die
arrays array 41. The odd number dies 45 are supported by a drive plate defined by two longitudinally extendingplates plates - A secondary set of dies made up of even numbered dies 47 in the
upper die array 41 is also provided. The even numbered dies 47 are supported by adrive plate 48 that extends longitudinally along the even numbered dies 47 and that is longitudinally straddled by theplates drive plate 48 is engaged by a drive to facilitate driven reciprocation of the even numbered dies 47. - In a similar fashion, the
lower die array 42 includes a primary set of dies made up of odd numbered dies 49 and a secondary set of dies made up of even numbered dies 50. As illustrated inFigure 4 , the odd numbered dies 49 are associated with, and supported by, adrive plate 51, while the even numbered dies 50 are supported by a drive plate defined by longitudinally extendingplates - Referring to
Figure 6 , the reciprocal motion of a pair of odd numbered dies 45 and 49 and a pair of even numbered dies 47 and 50 is illustrated. The die pairs 45, 49 and 47, 50 are driven such that they operate in an offset reciprocating motion. More particularly, the die pairs 45, 49 and 47, 50 sequentially engage themetal sheet 43 passing through the upper and lower die sets. This advantageously facilitates progressive deformation of themetal sheet 43 while minimising unnecessary deformation due to disengagement of the die arrays with thesheet 43. - Referring to the first frame of the series of frames illustrated in
Figure 6 , it will be appreciated that dies 45 and 49 are in engagement with the sheet ofmetal 43 as it enters the assembly, while dies 47 and 50 are disengaged from the sheet ofmetal 43. In a second frame, the dies are all disengaged from thesheet 43. It will be appreciated that in this instance, dies located further along the die arrays of the assembly will be engaged with thesheet 43. The offset reciprocating motion of the dies is evidenced by the illustration in the third frame ofFigure 6 . In that frame, the dies 45 and 49 that were previously engaged with the sheet ofmetal 43 have totally disengaged the sheet ofmetal 43, while the dies 47 and 50 that were previously disengaged from the sheet ofmetal 43, have now engaged the sheet ofmetal 43. This movement of the dies within the upper and lower die arrays advantageously aids in feeding or drawing the sheet ofmetal 43 through the assembly. - Referring to
Figures 7 through 9 , an embodiment of theupper die array 70 andlower die array 80 and their positioning together are illustrated in more detail. It will, however, be appreciated that this is only one of many embodiments that may be employed, depending on the desired final profile for the sheet of metal. - The
upper die array 70 includes a preliminary die set made up of odd numbered dies 71, and a secondary die set made up of even numbered dies 72. The dies 71 and 72 define adie profile 73 along the longitudinal, or processing, length of theupper die array 70. Thedie profile 73 has a relatively low profile at afeed end 74, and a relatively high profile at anexit end 75. As such, a sheet of metal is progressively deformed along the processing length of theupper die array 70. - In a similar fashion to the
upper die array 70, thelower die array 80 includes a preliminary die set made up of odd numbered dies 81, and a secondary die set made up of even numbered dies 82. Again, the dies 81 and 82 define adie profile 83 along the longitudinal, or processing, length of thelower die array 80. Thedie profile 83 again has a relatively low profile at afeed end 84, and a relatively high profile at anexit end 85. As such, the die profiles 73 and 83 are complementary with one another. - A better appreciation of the complementary nature of the
profile 73 of theupper die array 70 and theprofile 83 of thelower die array 80 can be gained throughFigure 9 . In this illustration it may be seen that theprofiles die arrays profiles die arrays upper die array 70 andlower die array 80 alleviate or eliminate spring back of the sheet of metal during forming. This is generally due to the fact that at least one or more dies is in engagement with the sheet of metal at any one time during forming. The assembly also advantageously reduces or eliminates axial stretching and bending of the sheet of metal during forming. - The assembly of the invention has various other advantages, including reduced power consumption due to the decrease in wasted deformation energy. The assembly is smaller in size than its roll forming counterparts. As such, the assembly has a smaller "foot print" which will result in lower production costs. It is anticipated that the assembly of the invention will also provide for lower maintenance costs and operation costs.
- It will of course be realised that the above has been given only by way of illustrative example of the invention and that all such modifications and variations thereto as would be apparent to those of skill in the art are deemed to fall within the broad scope and ambit of the invention as herein set forth.
Claims (17)
- An assembly (40) for press forming a deformable material (43) including:a first die array (41) including a plurality of dies (45, 47), the first die array (41) defining a first die profile;a second die array (42) that is complementary with the first die array (41) and including a plurality of dies (49, 50), the second die array (42) defining a second die profile that is complementary with the first die profile; anda first drive for driving the first die array (41) and a second drive for driving the second die array (42);characterized in that in use the plurality of dies (45, 47) of the first die array (41) and the plurality of dies (49, 50) of the second die array (42) sequentially engage the deformable material (43) along a processing length to deform the deformable material (43) to a predetermined profile (44),wherein the first die array (41) includes a preliminary set of dies and a secondary set of dies, the preliminary set of dies and the secondary set of dies sequentially engaging the deformable material (43) along the processing length in use,wherein the preliminary set of dies includes odd numbered dies (45) within the first die array (41) and the secondary set of dies includes even numbered dies (47) within the first die array (41), andwherein the odd numbered dies (45) and even numbered dies (47) of the first die array (41) are separately driven by the first drive means to provide sequential operation between the odd numbered dies and the even numbered dies.
- An assembly (40) according to claim 1, wherein the odd numbered dies (45) of the first die array (41) are associated with a first drive plate (46a) and the even numbered dies (47) of the first die array (41) are associated with a second drive plate (46b), each of the first drive plate (46a) and second drive plate (46b) being driven by the first drive means.
- An assembly (40) according to claim 1 or 2, wherein the second die array (42) includes a preliminary set of dies and a secondary set of dies, the preliminary set of dies and secondary set of dies of the first die array (41) and the second die array (42) sequentially engaging the deformable material (43) along the processing length in use.
- An assembly (40) according to claim 3, wherein the preliminary set of dies of the second die array (42) includes odd numbered dies (49) within the second die array (42), and the secondary set of dies of the second die array (42) includes even numbered dies (50) within the second die array (42).
- An assembly (40) according to claim 4, wherein the odd numbered dies (45, 49) and even numbered dies (47, 50) of the first die array (41) and second die array (42) are separately and respectively driven by the first and second drive means.
- An assembly (40) according to claim 5 wherein the odd numbered dies (49) of the second die array (42) are associated with a third drive plate (52a) and the even numbered dies (50) of the second die array (42) are associated with a fourth drive plate (52b), each of the drive plates (52a, 52b) being driven by the respective first and second drive means.
- An assembly (40) according to claim 6, wherein the dies of the first die array (41) and the second die array (42) are driven in a linear reciprocating motion or an orbital reciprocating motion.
- An assembly (40) according to claim 7, wherein the reciprocating motion of the odd numbered dies (45, 49) of the first die array (41) and the second die array (42) is offset relative to the orbital reciprocating motion of the even numbered dies (47, 50) of the first die array (41) and the second die array (42).
- An assembly (40) according to any one of the preceding claims, wherein the first die array (41) and the second die array (42) are disposed in horizontal planes.
- An assembly (40) according to claim 9, including:a third die array including a plurality of dies, the third die array defining a third die profile;a fourth die array that is complementary with the third die array and including a plurality of dies, the fourth die array defining a fourth die profile that is complementary with the third die profile; anda drive means for driving at least one of the third die array and the fourth die array;wherein the third die array and the fourth die array are disposed in planes at an angle to the horizontal plane and, in use, the plurality of dies of the third die array and the plurality of dies of the fourth die array sequentially engage the deformable material (43), preformed by the first die array (41) and the second die array (42), along a processing length to deform the deformable material (43) to a final profile.
- An assembly (40) according to any one of the preceding claims, including a guide for guiding the deformable material (43) between the first die array (41) and the second die array (42).
- A die set for use in an assembly (40) according to any one of the preceding claims, the die set including:a first die array (41) including a plurality of dies, the first die array (41) defining a first die profile;a second die array (42) that is complementary with the first die array (41) and including a plurality of dies, the second die array (42) defining a second die profile that is complementary with the first die profile,wherein the first die array (41) includes a preliminary set of dies and a secondary set of dies, and wherein the preliminary set of dies and the secondary set of dies are able to be driven separately.
- An assembly (40) for press forming a deformable material (43) including:a first die defined by a die array (41) including a plurality of dies (45, 47), the die array (41) defining a first die profile;a second die that is complementary with the first die; anda drive for driving at least the die array of the first die;characterized in that in use the plurality of dies (45, 47) of the first die array (41) sequentially engage the deformable material (43) along a processing length to progressively deform the deformable material (43) to a predetermined profile (44) as it is fed through the dies,wherein the first die array (41) includes a preliminary set of dies and a secondary set of dies, the preliminary set of dies and the secondary set of dies sequentially engaging the deformable material (43) along the processing length in use,wherein the preliminary set of dies includes odd numbered dies (45) within the first die array (41) and the secondary set of dies includes even numbered dies (47) within the first die array (41),wherein the odd numbered dies (45) and even numbered dies (47) of the first die array (41) are separately driven by the drive means to provide sequential operation between the odd numbered dies and the even numbered dies, andwherein the second die is formed of a resilient flexible material that deforms to a complementary profile to the first die profile on engagement with the die array of the first die.
- A die set for use in an assembly (40) according to claim 13, the die set including:a first die defined by a die array including a plurality of dies, the first die array defining a first die profile; anda second die that is complementary with the first die,wherein the first die array (41) includes a preliminary set of dies and a secondary set of dies, and wherein the preliminary set of dies and the secondary set of dies are able to be driven separately, and wherein the second die is formed of a resilient flexible material that deforms to a complementary profile to the first die profile on engagement with the die array of the first die.
- A method of fabricating a die set for use in an assembly according to any one of claims 1 to 12 having a profile for continuous deformation of a deformable material from an initial profile to a final profile as it is fed through the die set, including:mapping the profile of the die set; andforming the die set, including a first die and a second die that define the profile of the die set;characterized in that the first die is split to form a die array, wherein the first die array (41) includes a preliminary set of dies and a secondary set of dies, and wherein the preliminary set of dies and the secondary set of dies are able to be driven separately.
- A method for press forming a deformable material using an assembly according to any one of claims 1 to 11 and 13, including feeding the deformable material between a first die array (41) or a first die defined by a die array (41) including a plurality of dies (45, 47) and a second die,
characterized in that the plurality of dies (45, 47) of the first die array sequentially engage the deformable material along a processing length to progressively deform the deformable material to a predetermined profile as it is fed through the die arrays. - A method according to claim 16, wherein the second die includes a plurality of dies, and the plurality of dies of the first die array and the plurality of dies of the second die array sequentially engage the deformable material along the processing length.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007902961A AU2007902961A0 (en) | 2007-06-01 | Assembly and method for press forming a sheet of deformable material | |
PCT/AU2008/000769 WO2008144832A1 (en) | 2007-06-01 | 2008-05-30 | Assembly and method for press forming a deformable material |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2164652A1 EP2164652A1 (en) | 2010-03-24 |
EP2164652A4 EP2164652A4 (en) | 2011-11-09 |
EP2164652B1 true EP2164652B1 (en) | 2020-01-15 |
Family
ID=40074465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08748025.7A Active EP2164652B1 (en) | 2007-06-01 | 2008-05-30 | Assembly and method for press forming a deformable material |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2164652B1 (en) |
JP (1) | JP5517921B2 (en) |
KR (1) | KR20100049510A (en) |
CN (1) | CN101918157B (en) |
AU (1) | AU2008255646B2 (en) |
WO (1) | WO2008144832A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5860041B2 (en) * | 2010-06-18 | 2016-02-16 | ザ ユニバーシティ オブ クィーンズランド | Method and apparatus for forming deformable material and deformable tubular cross-sectional shape |
CN103157703A (en) * | 2011-12-16 | 2013-06-19 | 洛阳高拓机械设备有限公司 | Bending device for large induction furnace wall and bending method |
CN106964949A (en) * | 2017-04-17 | 2017-07-21 | 江苏帝尔保机械有限公司 | A kind of rolling die group and its production method for producing closed shape tube |
CN109676019B (en) * | 2019-01-17 | 2020-01-14 | 惠州市普盈金属科技有限公司 | Non-target automatic multi-foot forming equipment for forming hardware plates |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1431175A (en) * | 1919-05-08 | 1922-10-10 | Said Ogden | Metal-working machine |
BE792036A (en) * | 1971-11-29 | 1973-05-29 | Caterpillar Tractor Co | METHOD AND APPARATUS FOR DEFORMING SHEET MATERIAL |
AU473224B2 (en) * | 1973-05-15 | 1976-06-17 | John Lysaght (Australia) Limited | Stamp forming articles from plate material |
DE2703694A1 (en) * | 1976-02-02 | 1977-08-04 | Francon | METHOD AND APPARATUS FOR MANUFACTURING RIBBED METAL PROFILES AND PROFILES MANUFACTURED BY THIS PROCESS |
JPS56119632A (en) * | 1980-02-27 | 1981-09-19 | Hitachi Ltd | Complex press working device |
US5031440A (en) * | 1989-02-15 | 1991-07-16 | Enami Seiki Mfg., Co. Ltd. | Apparatus for forming long plate member |
JPH08318320A (en) * | 1995-05-25 | 1996-12-03 | Amada Co Ltd | Bending machine |
CA2328488A1 (en) * | 1999-12-14 | 2001-06-14 | Voss Manufacturing, Inc. | Device and method for manufacturing turbulators for use in compact heat exchangers |
CN1297810A (en) * | 2001-01-05 | 2001-06-06 | 宁新华 | Accurate manufacture process of movable die for meridian cord tyre |
JP2006136896A (en) * | 2004-11-10 | 2006-06-01 | Calsonic Kansei Corp | Method and apparatus for manufacturing fin |
WO2006090502A1 (en) * | 2005-02-25 | 2006-08-31 | Hidaka Seiki Kabushiki Kaisha | Corrugate-fin producing apparatus |
JP4327166B2 (en) * | 2005-02-25 | 2009-09-09 | 日高精機株式会社 | Corrugated fin manufacturing equipment |
-
2008
- 2008-05-30 JP JP2010509627A patent/JP5517921B2/en active Active
- 2008-05-30 AU AU2008255646A patent/AU2008255646B2/en active Active
- 2008-05-30 CN CN200880101434.3A patent/CN101918157B/en active Active
- 2008-05-30 KR KR1020097027671A patent/KR20100049510A/en not_active Application Discontinuation
- 2008-05-30 WO PCT/AU2008/000769 patent/WO2008144832A1/en active Application Filing
- 2008-05-30 EP EP08748025.7A patent/EP2164652B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
CN101918157B (en) | 2014-04-09 |
AU2008255646B2 (en) | 2015-05-28 |
CN101918157A (en) | 2010-12-15 |
EP2164652A1 (en) | 2010-03-24 |
EP2164652A4 (en) | 2011-11-09 |
JP5517921B2 (en) | 2014-06-11 |
KR20100049510A (en) | 2010-05-12 |
AU2008255646A1 (en) | 2008-12-04 |
JP2010528862A (en) | 2010-08-26 |
WO2008144832A1 (en) | 2008-12-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2164652B1 (en) | Assembly and method for press forming a deformable material | |
RU2538130C1 (en) | Radial forging of hexagonal sections | |
CN108326041B (en) | Equidistant rolling method for spiral conical rollers of large-size titanium alloy ultrafine-grained bar | |
CN104384430A (en) | Forging technology for thick-walled high cylindrical ring forgings | |
US8720247B2 (en) | Method for bending process and processing machine | |
US9914162B2 (en) | Assembly and method for press forming a deformable material | |
CN108580548B (en) | Equidistant rolling method for spiral conical rollers of large-size 45-steel ultrafine-grained bar | |
CN107225208B (en) | A kind of pinion gear forging technology | |
CN106345812A (en) | Rolling method for magnesium alloy sheet material with side pressure and adopted device thereof | |
CN107855393A (en) | A kind of method of mould pressing plate type heat exchanger grommet | |
CN105057346B (en) | Planetary gear train-groove cam type bar end hot-forming mechanism | |
CN102896178A (en) | Cold processing method of metal sheet corner piece and special metal sheet corner forming machine therefor | |
RU2451570C1 (en) | Method of producing variable-corrugation elements | |
CN210586675U (en) | Aluminum foil roll forming device | |
CN106238488A (en) | Different pressures cut the method and apparatus of continuous large plastometric set under composite strain path | |
CN203803962U (en) | Online aluminium extrusion finishing device | |
CN108076631A (en) | By the method for metallic plate manufacture Straight slot pipe | |
CN203184553U (en) | Full-automatic processing forming device of elastic check ring | |
JP2002254200A (en) | Continuous working device | |
WO2008024842A2 (en) | Apparatus and process for reducing profile variations in sheet metal stock | |
CN114309405B (en) | Warm upsetting process and system for stainless steel inserts | |
US4377942A (en) | Method of bending metal sheet | |
US3555869A (en) | Method of manufacturing electrically welded pipes | |
WO2017116375A1 (en) | A die assembly for forming sheet metal at a single stroke with a single press and a line system integrated therewith | |
CN108817093B (en) | Method for forming special-shaped ring blank |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20091223 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20111007 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B21D 13/02 20060101ALI20111004BHEP Ipc: B21D 5/01 20060101AFI20111004BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20170315 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20190903 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602008062012 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1224701 Country of ref document: AT Kind code of ref document: T Effective date: 20200215 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20200115 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200415 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200607 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200416 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200515 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200415 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602008062012 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1224701 Country of ref document: AT Kind code of ref document: T Effective date: 20200115 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602008062012 Country of ref document: DE |
|
26N | No opposition filed |
Effective date: 20201016 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200531 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200531 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20200531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200530 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200530 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201201 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200115 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20230427 Year of fee payment: 16 |