WO2015004908A1 - 板材の成形方法、及び予成形形状の設定方法 - Google Patents
板材の成形方法、及び予成形形状の設定方法 Download PDFInfo
- Publication number
- WO2015004908A1 WO2015004908A1 PCT/JP2014/003620 JP2014003620W WO2015004908A1 WO 2015004908 A1 WO2015004908 A1 WO 2015004908A1 JP 2014003620 W JP2014003620 W JP 2014003620W WO 2015004908 A1 WO2015004908 A1 WO 2015004908A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shape
- cross
- molding
- plate material
- forming
- Prior art date
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
- B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
-
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/14—Bending rods, profiles, or tubes combined with measuring of bends or lengths
Definitions
- the present invention relates to a technique for applying a plastic deformation such as overmolding to a plate material in multiple stages to obtain a final shape.
- Patent Document 1 discloses a method of reducing the surplus and improving the yield by creating a range in which the blank material is not restrained in the initial stage of press molding.
- Patent Document 2 discloses a method for avoiding a molding defect by allowing a local area of a press mold to be driven as an individual movable punch, and drawing a blank into the mold in advance and then performing molding with the movable punch. It is disclosed.
- Patent Document 1 it is possible to reduce the surplus as compared with the conventional method, but the surplus is still necessary. Moreover, since the method of patent document 1 is drawing, there is a limit in a yield and an improvement allowance.
- the present invention focuses on the above points, and an object of the present invention is to provide a method for forming a plate material and a method for setting a preformed shape, which can improve both yield and formability.
- the moldability is improved when the press molding is performed in multiple stages divided into a plurality of molding processes.
- the reason is that the strain is not concentrated in one place and the whole plate material is more concentrated in the case of forming in stages in multiple forming processes compared to the case of forming to the final shape in one forming process. This is because the strain is easily dispersed.
- the mold shape at the pre-molding stage prior to the final stage of press working largely depends on the experience of engineers, and a method for determining the shape has not been established.
- the inventors have conducted a research study to effectively perform preforming in order to simultaneously solve the demands for both yield improvement and formability improvement.
- the inventors have found that if a cross-sectional line length comparable to that of the final shape can be obtained at the pre-molding stage, the final shape can be obtained at the time of final molding with almost the same strain distribution as during pre-molding. did.
- a method for forming a plate material is to form a plate material that is plastically deformed from the preformed shape to the final shape after plastic deformation is applied to the plate material.
- the ratio of the cross-sectional line length in the preformed shape to the cross-sectional line length in the final shape at the same cross-sectional position falls within a predetermined allowable range.
- the pre-formed shape is determined.
- the preforming shape setting method includes the preforming shape when the plate material is plastically deformed from the preformed shape to the final shape after being plastically deformed to form the preformed shape.
- the ratio of the cross-sectional line length in the pre-shaped shape to the cross-sectional line length in the final shape at the same cross-sectional position for a plurality of cross-sections in the final shape is a preset allowable value.
- the pre-shaped shape is determined so as to be within the range.
- the positions of the cross-sections at a plurality of locations are set in, for example, a lattice shape or a radial shape.
- the plate material molding method is obtained by plastically deforming a plate material into a preformed shape, and then plastically deforming from the preformed shape to the final shape.
- An inner reference point is set in the final shape molding region, and a plurality of outer reference points are set on the outer peripheral contour line of the molding region, and a first inner point corresponding to the inner reference point with respect to the final shape.
- the length of the endless annular line obtained by connecting the dividing points is a first line length, and in the preformed shape, each of the second inner point corresponding to the inner reference point and each outer reference point A plurality of cross-sectional lines connecting the second outer point are set ratios as described above.
- the ratio of the second line length to the first line length when the length of the endless annular line obtained by connecting adjacent division points at each divided point is the second line length.
- the pre-shaped shape is determined so that the value falls within a preset allowable value range.
- the preforming shape setting method includes the above-described pre-formation in the molding of a plate material that is plastically deformed from the preformed shape to the final shape after plastic deformation is performed on the plate material.
- a molding shape setting method wherein an inner reference point is set in a molding region of the final shape, and a plurality of outer reference points are set on an outer peripheral contour line of the molding region, and the inner side is set with respect to the final shape.
- a plurality of cross-sectional lines that individually connect the first inner point corresponding to the reference point and the first outer points corresponding to the respective outer reference points are set, and the set cross-sectional lines are divided at a preset setting ratio.
- the preforming shape is determined such that the ratio of the second line length to the line length falls within a preset allowable value range.
- the present invention it is possible to obtain a cross-sectional line length comparable to that of the final shape at the pre-molding stage, so that the final shape can be obtained at the time of final molding with substantially the same strain distribution as that during pre-molding.
- a plate material forming method and a preformed shape setting method capable of improving both yield improvement and formability improvement.
- the present invention is particularly effective in the case of stretch forming.
- press molding for molding by adopting press molding for molding and applying the present invention, it is possible to achieve high yield while facilitating molding by overhang molding when performing press molding.
- FIG. 1 is a conceptual diagram illustrating a molding process according to an embodiment of the present invention.
- FIG. 2 is a diagram relating to the first embodiment, and is a diagram illustrating a method for determining a preformed shape.
- FIG. 3 is a diagram relating to the first embodiment, and is a plan view showing a first example of positions of a plurality of cross-sections for obtaining a cross-sectional alignment.
- FIG. 4 is a diagram relating to the first embodiment, and is a plan view showing a second example of positions of a plurality of cross-sections for obtaining a cross-sectional alignment.
- FIG. 5 is a diagram relating to the first embodiment, and is a diagram illustrating a final shape in the first embodiment.
- FIG. 1 is a conceptual diagram illustrating a molding process according to an embodiment of the present invention.
- FIG. 2 is a diagram relating to the first embodiment, and is a diagram illustrating a method for determining a preformed shape.
- FIG. 6 is a diagram related to the first embodiment, and is a diagram showing a pre-formed shape in Example 1, where (a) is a shape example according to the conventional method, and (b) is a shape example according to the method of the present invention. is there.
- FIG. 7 is a diagram relating to the first embodiment, and is a diagram illustrating a final shape in Example 2.
- FIG. 8 is a diagram relating to the first embodiment, and is a diagram showing a preformed shape in Example 2.
- FIG. FIG. 9 is a diagram relating to the second embodiment and is a diagram for explaining a method for determining a preformed shape.
- FIG. 10 is a diagram relating to the second embodiment, and is a plan view illustrating an example of setting internal reference points and external reference points.
- FIG. 11 is a diagram relating to the second embodiment, and is a diagram illustrating the setting of an endless annular line (first endless annular line) in the final shape.
- FIG. 12 is a diagram relating to the second embodiment, and is a diagram illustrating a position that becomes an unexpected annular line (second endless annular line) in a preformed shape.
- FIG. 13 is a diagram related to the second embodiment and is a diagram illustrating a final shape of the example.
- FIG. 14 is a diagram relating to the second embodiment, and is a plan view showing an endless annular line (first endless annular line) in the final shape of the example.
- FIG. 15 is a diagram relating to the second embodiment, and is a plan view showing an endless annular line (second endless annular line) in the preformed shape of the example.
- FIG. 1 is a conceptual diagram illustrating a molding process in the present embodiment.
- the molding of this embodiment is performed by pre-forming a plate material 1 (blank) plastically deformed into a pre-formed shape, and the plate material 1 having a pre-formed shape in the pre-forming step as a final product. It consists of a two-stage molding process and a main molding process that plastically deforms into a shape. Note that the preforming process itself may be composed of a plurality of preforming processes.
- the preforming step is performed, for example, by press molding using a preforming mold for molding into the preformed shape.
- the mold includes, for example, a punch and die set.
- the main molding step is also performed by press molding using a main mold for molding into the final shape.
- the mold includes, for example, a punch and die set.
- the above press molding is, for example, stretch molding.
- the preforming mold prior to the preforming step, there is a process of obtaining the shape of the preforming mold, that is, the preformed shape from the final shape.
- a preforming mold is manufactured so as to obtain the preformed shape.
- the method for determining the pre-formed shape is to set a plurality of cross-sections along the plate thickness direction of the plate material 1 in the final shape, and the cross-section in the pre-formed shape with respect to the cross-sectional line length in the final shape at the same cross-sectional position.
- the preforming shape is determined so that the ratios of the line lengths are within the allowable range set in advance. That is, the pre-formed shape is determined by comparing the cross-section line lengths of the final shape and the pre-formed shape so that the ratio of both cross-section line lengths falls within a preset allowable range. Determine the shape.
- the direction “along the plate thickness direction of the plate 1” corresponds to the pressing direction.
- FIG. 2 shows a processing example of a method for determining a preformed shape based on the final shape.
- two or more cross-sectional locations are set for the plate material 1 (Process A). It is preferable that the cross-sectional location is set so as to pass through a characteristic location where the curvature of the cross-sectional shape in the final shape is at least steep. By doing so, it is possible to reduce the number of cross sections to be set.
- FIG. 3 shows a first setting example of the positions of a plurality of cross sections.
- the positions of the cross-sections at a plurality of locations are in an n ⁇ m lattice shape when viewed from the direction along the plate thickness direction of the plate material 1 before forming (corresponding to the projecting direction by plan view).
- This is an example when (n + m) cross-sectional portions are set in (mesh shape).
- the setting location will be described later.
- region is corresponded to the external shape line of a final shape.
- the cross-sectional line length L0 of the final shape is acquired by performing a molding simulation of the final shape using, for example, CAE (Computer Aided Engineering). Further, the cross-sectional line length L0 of the final shape may be obtained by actually performing press molding to produce a final-shaped product and measuring the cross-sectional line length L0 by an optical measurement method or the like. But the acquisition method of cross-sectional line length L0 is not limited to this, What is necessary is just to employ
- the cross-sectional line length L1 at the same position as the cross-sectional position set in the final shape is the cross-sectional line length corresponding to the acquired corresponding cross-sectional line length.
- the cross-sectional line length L1 is specified (processing C).
- the cross-sectional line length L1 at each cross-sectional location is set, for example, within the allowable range described later.
- the section line length corresponding to the section line length is a section line length when the ratio of the section line length in the preformed shape to the section line length in the final shape is within a preset allowable range.
- the range of the preset allowable value is a range in which (L1 / L0) is 0.8 times or more and 1.2 times or less. Under this condition, the cross-sectional line length of the final shape and the cross-sectional line length of the preformed shape are set to be the same in the same cross section.
- the preformed shape is specified so as to satisfy all the conditions of the cross-sectional line length L1 of each specified cross-sectional location (Process D).
- the accuracy increases as the number of cross-sectional portions for obtaining the cross-sectional line length increases.
- orthogonal coordinates are considered with the plate thickness direction of the plate material 1 before forming as the Z-axis and the directions orthogonal to the Z-axis as the X-axis and the Y-axis.
- the X-axis and the Y-axis are directions along the surface of the plate material 1 before molding.
- n locations and cross-sectional locations are set in parallel with the XZ plane at predetermined intervals, and m locations and cross-sectional locations are set in parallel with the YZ plane at predetermined intervals.
- n and m are 1 or more.
- the cross-sectional portion is set in a lattice shape (mesh shape) as viewed from the plate thickness direction of the plate material 1 before forming.
- the lattice shape does not need to be an orthogonal lattice shape.
- the cut portions may be set in at least two directions intersecting each other in plan view, and a plurality of cross-sectional shapes may be used in each direction.
- molding and a press direction are not parallel, it is preferable to set so that the surface direction of each cross section may not be parallel to a Z axis
- the line specifying the cross section may not be a straight line, but it is easier to set it to a straight line.
- the other direction The shape of the final preformed shape is determined by correcting with the cross-sectional alignment in FIG.
- the ratio of the sectional line length between the final shape and the preformed shape is preferably in the range of 0.8 times to 1.2 times as described above, and is preferably in the range of 0.9 times to 1.1 times. Further preferred. It has been confirmed that the occurrence of cracks and the occurrence of wrinkles on the product surface can be significantly reduced by adjusting the range from 0.8 times to 1.2 times. Since it was confirmed that a high yield was secured at least within this range, this value was specified.
- the example shown in FIG. 3 is an example in which a plurality of cross sections are set in a lattice shape.
- the setting of the cross sections at a plurality of locations is not limited to this.
- FIG. 4 shows a second setting example for setting the positions of the cross sections at a plurality of locations.
- This example is an example in which the positions of a plurality of cross sections are set radially. That is, as viewed from the direction along the pressing direction (the direction along the plate thickness direction of the plate material before forming), the internal set point P 0 is set in the forming region of the final shape, and passes through the internal set point P 0. In addition, a plurality of lines CA 1 to CA 8 extending in different directions are set, and the plurality of cross sections are set at the positions of the set lines.
- FIG. 4 illustrates the case where the plurality of lines are eight, but may be other than eight.
- the number of cross sections is preferably 8 or more.
- the number of cross-sections can be reduced in the radial setting compared to the grid setting.
- the radially extending lines need not be set at regular intervals. It is preferable to set so as to pass through a portion having a large curvature change in the final shape.
- FIG. 4 illustrates the case where both ends of the line passing through the internal set point P0 are a single line that reaches the outer peripheral contour line of the final shape forming region.
- each line may be set so as to connect the internal set point P0 and one point of the outer contour line of the final shape forming region.
- the “molding region” indicates a region in which plastic deformation is positively applied including a product surface, a pre-formed portion, etc., in a press product after preforming or main molding. However, the part molded by the bead is not included.
- the internal set point P0 is preferably set at the position of the centroid when the molding area is viewed from the direction along the press direction.
- the pre-molding process may be composed of two or more temporary molding processes.
- the processed shape after processing in each of the temporary forming steps is a cross-section in the processed shape after the processing with respect to the cross-sectional line length in the final shape at the same cross-sectional position for a plurality of cross-sectional locations in the final shape. It is preferable to set the wire length for each of the temporary forming steps so that the wire lengths are within the allowable range. However, it is only necessary that the preformed shape one stage before forming into the final shape satisfies the above conditions.
- the present invention can be applied not only to automobile parts but also to all processes for press-molding the plate material 1.
- the material for press molding is not limited to steel, but can be applied to ferrous alloys such as stainless steel, non-ferrous materials, and non-metallic materials.
- FIG. 1 (same as FIG. 1 used in the description of the first embodiment) is a conceptual diagram illustrating the molding process in the present embodiment.
- the molding of this embodiment is performed by pre-forming a plate material 1 (blank) plastically deformed into a pre-formed shape, and the plate material 1 having a pre-formed shape in the pre-forming step as a final product. It consists of a two-stage molding process and a main molding process that plastically deforms into a shape. Note that the preforming process itself may be composed of a plurality of preforming processes.
- the preforming step is performed, for example, by press molding using a preforming mold for molding into the preformed shape.
- the mold includes, for example, a punch and die set.
- the main molding step is also performed by press molding using a main mold for molding into the final shape.
- the mold includes, for example, a punch and die set.
- the above press molding is, for example, stretch molding.
- the preforming mold prior to the preforming step, there is a process of obtaining the shape of the preforming mold, that is, the preformed shape from the final shape.
- a preforming mold is manufactured so as to obtain the preformed shape.
- the preforming shape determination method sets an inner reference point in the molding region of the final shape and sets a plurality of outer reference points on the outer peripheral contour line of the molding region, A plurality of cross-sectional lines passing through the first inner point corresponding to the reference point and the first outer points corresponding to the respective outer reference points are set, and the set cross-sectional lines are divided at a preset setting ratio. Each division point is obtained, and the length of an endless annular line obtained by connecting adjacent division points is a first line length.
- the second inner point corresponding to the inner reference point and the above The length of an endless annular line obtained by connecting adjacent division points at each division point obtained by dividing a plurality of cross-sectional lines connecting each second outer point corresponding to each outer reference point by the set ratio is Above the first line length when the line length is 2.
- the second line length is preset to determine the preformed shape.
- the inner reference point set to the final shape is set as the origin, and the press direction is set as the Z direction.
- three-dimensional coordinates are set with the directions indicated by two orthogonal straight lines passing through the origin and orthogonal to the Z direction as the X direction and the Y direction.
- each outer reference point can be expressed using the X, Y, and Z coordinates.
- the X, Y and Z coordinates are similarly set in the space for designing the preformed shape, and the outer reference in the design space for the preformed shape is referred to by referring to the coordinates of each outer reference point obtained by the above method. It becomes possible to obtain points.
- an endless annular line having a contour line (annular ring shape) centered on the first inner point is set and the first line length is obtained, and the endless line corresponding to the endless annular line in the preformed shape is obtained.
- the pre-shaped shape is determined so that the second line length of the annular line falls within a preset allowable value range with respect to the first line length.
- the endless annular line preferably employs a cross-sectional line in each shape.
- FIG. 9 shows a processing example of a method for determining a preformed shape based on the final shape.
- an inner reference point A is set in the forming region that is the final shape of the plate material 1 before forming, and a plurality of outer reference points B1 are formed on the outer peripheral contour line of the forming region.
- the inner reference point A is, for example, when the final shape is viewed from the centroid of the molding region that is the final shape in the plate material 1 before molding or the direction along the press direction with respect to the plate material 1 after molding into the final shape. Set to the position of the centroid.
- the plurality of outer reference points B1 to B8 are set along the outer peripheral contour of the molding region on the outer peripheral contour of the molding region.
- the plurality of outer reference points B1 to B8 need not be set at equal intervals.
- the positions of the plurality of outer reference points B1 to B8 are set on the plate material 1 before molding is illustrated, but the outer peripheral contour line (outer shape) of the molding region on the plate material 1 after final formation is illustrated. It is preferable that the positions of the plurality of outer reference points B1 to B8 are set by lines), and the positions corresponding to the positions are set in the plate material 1 before forming.
- outer reference points B1 to B8 at more appropriate positions by setting the positions of the plurality of outer reference points B1 to B8 on the outer peripheral contour line (outline) of the forming region in the plate 1 after the final formation. Become. That is, setting the outer reference points B1 to B8 so as to pass through a cross-sectional position where the curvature change is large (for example, a steep position) can improve the accuracy while reducing the number of outer reference points B1 to B8.
- the number of outer reference points is preferably four or more.
- First outer points BF1 to BF8 are set (step S20), and positions of cross-sectional lines D1 to D7 in the final shape connecting the first inner point AF and the first outer points BF1 to BF8 are set (step S30). ).
- step S40 as shown in FIG. 11, division points B11 to B82 obtained by dividing the actual lengths of the respective sectional lines at the set ratio are set for the respective sectional lines D1 to D7.
- two dividing points B11 to B82 are set for each of the sectional lines D1 to D7.
- the accuracy increases as the setting ratio is increased.
- the calculation cost and time cost required for the design increase as the setting ratio increases. Preferably four or more.
- first endless annular lines C1 and C2 are determined as first endless annular lines C1 and C2.
- a line having the shortest distance between adjacent division points B11 to B82 is employed.
- the first endless annular lines C1 and C2 may be set as endless annular lines in which adjacent division points B11 to B82 are connected by a straight line without being a cross-sectional line.
- the accuracy is better when the cross-section line is adopted.
- step S50 the first line length of the first endless annular line for each set ratio determined in step S40 is calculated.
- two first line lengths are obtained.
- the first line length in the final shape is obtained by performing a final shape molding simulation using, for example, CAE. Further, for example, the final shape product may be manufactured by actually performing press molding and measured by an optical measurement method or the like.
- step S60 a straight line connecting the inner reference point A (corresponding to the second inner point) and the outer reference points B1 to B8 in the plate material 1 before forming is formed in a preformed shape.
- division points B11 to B82 are set. Then, for each set ratio, the position of the endless annular line connecting the adjacent division points B11 to B82 with a straight line is specified as the position to be the second endless annular line in the preformed shape.
- step S70 the second line length for each set ratio is obtained from the first line length for each set ratio obtained in step S50. Specifically, the second line length is set for each set ratio from a range that is not less than 0.8 times and not more than 1.2 times the first line length.
- step S80 the shape in which the length of the position that becomes the second endless annular line in the preformed shape set in step S60 becomes the second line length set in step S70 is a preformed shape.
- the shape of the preformed shape is determined from the position including the location where the degree of curvature change is relatively large in the final shape. After the tentative determination, the length of the position of the other second endless annular line is corrected to determine the shape of the final preformed shape.
- the ratio of the second line length to the first line length is preferably not less than 0.6 times and not more than 1.4 times, and ranges from 0.8 times to 1.2 times as described above. It is more preferable that Most preferably, it is in the range of 0.9 to 1.1 times.
- the ratio is less than 0.6 times, the line length is insufficient at the time of final molding, and there is a possibility that cracking may occur or the yield may be reduced.
- the ratio exceeds 1.4 times, the wire length is excessive at the time of final molding, and wrinkles may occur on the product surface.
- the pre-molding process may be composed of two or more temporary molding processes.
- the processed shapes after the processing in each of the temporary forming steps are the first endless annular lines C1 and C2 in the final shape and the second endless annular lines in the processed shape after the processing. It is preferable to set for each of the temporary forming steps so as to fall within the allowable range. However, it is only necessary that the preformed shape one stage before forming into the final shape satisfies the above conditions.
- the present invention can be applied not only to automobile parts but also to all processes for press-molding the plate material 1.
- the material for press molding is not limited to steel, but can be applied to ferrous alloys such as stainless steel, non-ferrous materials, and non-metallic materials.
- Example 1 is an example in which cross-sectional portions for adjusting the cross-sectional line length are set in a lattice shape.
- the final shape imitating an automobile wheel house part shown in FIG. 5 was created by a multi-stage press molding process.
- the plate material mild steel having a plate thickness of 0.7 mm was used, and a rock beat was provided on the outer peripheral side of the product forming portion, and complete overmolding was performed to verify the effect of the present invention.
- FIG. 6 (a) shows a preformed shape that is generally performed for comparison.
- a pre-formed shape for comparison (FIG. 6A) is a pre-formed shape obtained by projecting a ball head without using the method of the present invention.
- the pre-formed shape for this comparison is formed into a hemispherical shape.
- FIG. 6 (b) shows a preformed shape obtained by the method of the present invention.
- This preformed shape has a shape in which the central portion is slightly depressed so as to satisfy the condition of the obtained sectional line length.
- the final shape was analyzed using the analysis model, and the pre-formed punch shape (pre-formed shape) was calculated from the result.
- the mesh size of the analysis model was 5 mm, and the mold was a rigid body. Molding analysis was performed by a dynamic explicit method using LSDYNA ver 9.7.1R5.
- the cross section for obtaining the preformed shape was set in the above-mentioned coordinate system, as shown in FIG.
- the preformed shape design uses the above coordinate system in the design space of the preformed shape, and sets 120 cross sections, 60 cross sections each on the XZ plane and YZ plane, at the same coordinate position as the above 120 cross sections.
- the pre-formed shape was designed so that the ratio of the cross-sectional line length to the final shape was 0.8 or more and 1.2 or less.
- the shape was calculated such that the overhang of the spherical head and the outline of the preformed shape according to the present invention in the top view coincide.
- Example 2 is an example in which the location of the cross section for adjusting the cross sectional line length is set to be radial.
- the internal set point P0 is set at the position of the centroid when the final shape is viewed from the direction along the press direction as shown in FIG. 7 with respect to the final shape using the analysis model.
- a plurality of lines are set radially from the internal set point P0.
- a broken line position is a position of a plurality of lines.
- the cross-section line length ratio with respect to the final shape of the preformed shape was calculated to be 0.8 or more and 1.2 or less at each cross-section position.
- the shape preformed based on the result is shown in FIG.
- the broken line position is the section line length position.
- the plate material mild steel having a plate thickness of 0.7 mm was used, and a rock beat was provided on the outer peripheral side of the product forming portion, and complete overmolding was performed to verify the effect of the present invention.
- An inner reference point is set at the centroid position of the final shape, a plurality of points are arranged on the outer peripheral contour (outline) of the molding area of the final shape, and the inner reference point and the plurality of points are individually connected. Positions that divide the cross-section line into 10 parts were set as division points, and nine cross-section lines (first endless annular lines) were set according to the division positions (see FIG. 14).
- the preformed shape was designed so that the lengths of the nine cross-sectional line positions were 0.8 times or more and 1.2 times or less than the final shape.
- FIG. 15 shows an example of the preformed shape.
- the final shape was analyzed using the analysis model, and the pre-formed punch shape (pre-formed shape) was calculated from the result.
- the final shape was also processed by one molding without pre-molding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
Abstract
Description
上記課題を解決するために、本発明の一態様である板材の成形方法は、板材に塑性変形を加えて予成形形状に成形した後に、その予成形形状から最終形状に塑性変形する板材の成形方法において、上記最終形状における複数箇所の断面について、同一断面位置における、上記最終形状での断面線長に対する上記予成形形状での断面線長の比率が、それぞれ予め設定した許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする。
上記課題を解決するために、本発明の一態様である板材の成形方法は、板材に塑性変形を加えて予成形形状に成形した後に、その予成形形状から最終形状に塑性変形する際に、上記最終形状の成形領域内に内側基準点を設定すると共に、上記成形領域の外周輪郭線上に複数の外側基準点を設定し、上記最終形状に対し、上記内側基準点に対応する第1内側点と上記各外側基準点に対応する各第1外側点とを個別に結ぶ複数の断面線を設定し、その設定した各断面線を予め設定した設定比率で分割した各分割点を求め、隣り合う分割点同士を結んで得られる無端環状の線の長さを第1の線長とし、上記予成形形状において、上記内側基準点に対応する第2内側点と上記各外側基準点に対応する各第2外側点とを結ぶ複数の断面線を上記設定比率で分割した各分割点における、隣り合う分割点同士を結んで得られる無端環状の線の長さを第2の線長とした場合に、上記第1の線長に対する上記第2の線長の比率が予め設定した許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする。
図1は、本実施形態における成形工程を説明する概念図である。
図1(第一実施形態の説明で用いた図1と同じ)は、本実施形態における成形工程を説明する概念図である。
(実施例1)
以下の実施例1は、断面線長を調整する断面の箇所を格子状に設定した例である。
実施例2は、断面線長を調整する断面の箇所を放射状に設定した例である。
図13に示される、自動車のホイールハウス部品を模した最終形状を、多段階のプレス成形工程で作成した。
P0 内部設定点
A 内側基準点
AF 内側点
B11-B82 分割点
B1-B8 外側基準点
BF1-BF8 外側点
C1、C2 第1の無端環状の線
D1-D7 断面線
Claims (18)
- 板材に塑性変形を加えて予成形形状に成形した後に、その予成形形状から最終形状に塑性変形する板材の成形方法において、
上記最終形状における複数位置の断面について、1つの面で切断した上記最終形状での断面線長に対する同一の面で切断した上記予成形形状での断面線長の比率が、それぞれ予め設定した許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする板材の成形方法。 - 上記予め設定した許容値の範囲は、0.8倍以上1.2倍以下の範囲であることを特徴とする請求項1に記載した板材の成形方法。
- 上記複数箇所の断面の位置を、成形前の上記板材における板厚方向に沿った方向からみて、格子状となるように設定したことを特徴とする請求項1又は請求項2に記載した板材の成形方法。
- 上記最終形状の成形領域内に内部設定点を設定し、その内部設定点を通り且つ互いに異なる方向に延びる複数の線を設定し、その設定した複数の線の位置に上記複数箇所の断面を設定することを特徴とする請求項1又は請求項2に記載した板材の成形方法。
- 上記内部設定点は、成形前の上記板材における板厚方向に沿った方向から上記最終形状をみた際の、図心の位置に設定することを特徴とする請求項4に記載した板材の成形方法。
- 上記予成形形状の成形は、2段階以上の仮成形工程を経て上記予成形形状に成形され、
上記各仮成形工程での加工後の各加工形状について、上記複数箇所の断面について、同一断面位置における、上記最終形状での断面線長に対する上記加工後の加工形状での断面線長が、それぞれ予め設定した許容値の範囲に収まるように、上記各仮成形工程での加工後の各加工形状を決定することを特徴とする請求項1~請求項5のいずれか1項に記載した板材の成形方法。 - 上記各成形は、プレス成形であることを特徴とする請求項1~請求項6のいずれか1項に記載した板材の成形方法。
- 板材に塑性変形を加えて予成形形状に成形した後に、その予成形形状から最終形状に塑性変形する際における、上記予成形形状の設定方法であって、
上記最終形状における複数箇所の断面について、同一断面位置における、上記最終形状での断面線長に対する上記予成形形状での断面線長の比率が、それぞれ予め設定した許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする予成形形状の設定方法。 - 上記複数箇所の断面の位置を、格子状に設定することを特徴とする請求項8に記載した予成形形状の設定方法。
- 上記複数箇所の断面の位置を、放射状に設定することを特徴とする請求項8に記載した予成形形状の設定方法。
- 板材に塑性変形を加えて予成形形状に成形した後に、その予成形形状から最終形状に塑性変形する際に、
上記最終形状の成形領域内に内側基準点を設定すると共に、上記成形領域の外周輪郭線上に複数の外側基準点を設定し、
上記最終形状に対し、上記内側基準点に対応する第1内側点と上記各外側基準点に対応する各第1外側点とを個別に結ぶ複数の断面線を設定し、その設定した各断面線を予め設定した設定比率で分割した各分割点を求め、隣り合う分割点同士を結んで得られる無端環状の線の長さを第1の線長とし、
上記予成形形状において、上記内側基準点に対応する第2内側点と上記各外側基準点に対応する各第2外側点とを結ぶ複数の断面線を上記設定比率で分割した各分割点における、隣り合う分割点同士を結んで得られる無端環状の線の長さを第2の線長とした場合に、
上記第1の線長に対する上記第2の線長の比率が予め設定した許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする板材の成形方法。 - 上記許容値の範囲は、0.8倍以上1.2倍以下の範囲であることを特徴とする請求項11に記載した板材の成形方法。
- 上記無端環状の線は、対応する複数の分割点を通る断面線であることを特徴とする請求項11又は請求項12に記載した板材の成形方法。
- 上記設定比率を複数設定し、各設定比率での上記第1の線長に対する上記第2の線長の比率が全て上記許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする請求項11~請求項13のいずれか1項に記載した板材の成形方法。
- 上記内部基準点を、上記最終形状の成形領域の図心に設定することを特徴とする請求項11~請求項14のいずれか1項に記載した板材の成形方法。
- 上記予成形形状の成形は、2段階以上の仮成形工程を経て上記予成形形状に成形され、
上記各仮成形工程での加工後の各加工形状について、上記第1の線長に対する上記第2の線長の比率が全て上記許容値の範囲に収まるように、上記各仮成形工程での加工後の各加工形状を決定することを特徴とする請求項11~請求項15のいずれか1項に記載した板材の成形方法。 - 上記各成形は、プレス成形であることを特徴とする請求項11~請求項16のいずれか1項に記載した板材の成形方法。
- 板材に塑性変形を加えて予成形形状に成形した後に、その予成形形状から最終形状に塑性変形する板材の成形における、上記予成形形状の設定方法であって、
上記最終形状の成形領域内に内側基準点を設定すると共に、上記成形領域の外周輪郭線上に複数の外側基準点を設定し、
上記最終形状に対し、上記内側基準点に対応する第1内側点と上記各外側基準点に対応する各第1外側点とを個別に結ぶ複数の断面線を設定し、その設定した各断面線を予め設定した設定比率で分割する各分割点を求め、隣り合う分割点同士を結んで得られる無端環状の線の長さを第1の線長とし、
上記予成形形状において、上記内側基準点に対応する第2内側点と上記各外側基準点に対応する各第2外側点とを結ぶ複数の断面線を上記設定比率で分割した各分割点における、隣り合う分割点同士を結んで得られる無端環状の線の長さを第2の線長とした場合に、
上記第1の線長に対する上記第2の線長の比率が予め設定した許容値の範囲に収まるように、上記予成形形状を決定することを特徴とする予成形形状の設定方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14823787.8A EP3020492B1 (en) | 2013-07-09 | 2014-07-08 | Preliminary molded shape setting method and plate molding method |
US14/903,818 US10730090B2 (en) | 2013-07-09 | 2014-07-08 | Method for forming blank and method for determining preforming shape |
MX2016000001A MX2016000001A (es) | 2013-07-09 | 2014-07-08 | Metodo para la conformacion de una lamina en bruto y metodo para la determinacion de una forma de preformado. |
CN201480038949.9A CN105451908B (zh) | 2013-07-09 | 2014-07-08 | 板材的成型方法、以及预成型形状的设定方法 |
KR1020167003309A KR101815403B1 (ko) | 2013-07-09 | 2014-07-08 | 판재의 성형 방법 및 예성형 형상의 설정 방법 |
JP2015526168A JP5867657B2 (ja) | 2013-07-09 | 2014-07-08 | 板材の成形方法、及び予成形形状の設定方法 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013143748 | 2013-07-09 | ||
JP2013-143748 | 2013-07-09 | ||
JP2014068718 | 2014-03-28 | ||
JP2014-068717 | 2014-03-28 | ||
JP2014-068718 | 2014-03-28 | ||
JP2014068717 | 2014-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015004908A1 true WO2015004908A1 (ja) | 2015-01-15 |
Family
ID=52279613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/003620 WO2015004908A1 (ja) | 2013-07-09 | 2014-07-08 | 板材の成形方法、及び予成形形状の設定方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US10730090B2 (ja) |
EP (1) | EP3020492B1 (ja) |
JP (1) | JP5867657B2 (ja) |
KR (1) | KR101815403B1 (ja) |
CN (2) | CN105451908B (ja) |
MX (1) | MX2016000001A (ja) |
WO (1) | WO2015004908A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016144825A (ja) * | 2015-02-09 | 2016-08-12 | 日新製鋼株式会社 | 2次プレス加工性評価方法 |
JP6133965B1 (ja) * | 2015-12-17 | 2017-05-24 | 日新製鋼株式会社 | 伸びフランジ性の評価方法 |
JP7020599B1 (ja) * | 2020-09-02 | 2022-02-16 | Jfeスチール株式会社 | プレス部品の製造方法、金型の設計方法、金型形状設計装置、及び金型 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109475916B (zh) | 2016-07-15 | 2021-06-04 | 杰富意钢铁株式会社 | 冲压件制造方法 |
US11376645B2 (en) | 2017-11-15 | 2022-07-05 | Jfe Steel Corporation | Sheet material press forming method |
MX2020014023A (es) | 2018-07-03 | 2021-03-09 | Jfe Steel Corp | Metodo para el dise?o de forma de molde y metodo para la produccion de parte prensada. |
CN111687269B (zh) * | 2020-06-09 | 2021-04-27 | 安徽江淮汽车集团股份有限公司 | 后车门外板冲压工艺方法及汽车后车门外板 |
MX2023002183A (es) * | 2020-09-02 | 2023-03-03 | Jfe Steel Corp | Metodo de fabricacion de componentes prensados, metodo de dise?o de troqueles, dispositivo de dise?o de formas de troqueles y troqueles. |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0684183A2 (en) * | 1994-03-30 | 1995-11-29 | Eberhard Jahn | Method of forming a slim package |
JP2007098443A (ja) * | 2005-10-05 | 2007-04-19 | Toyota Motor Corp | プレス成形方法及びプレス成形装置 |
JP2007118021A (ja) | 2005-10-26 | 2007-05-17 | Isuzu Motors Ltd | プレス成形品の成形方法およびプレス成形装置 |
JP2007326112A (ja) | 2006-06-06 | 2007-12-20 | Hiroshima Pref Gov | プレス成形方法 |
JP2009104456A (ja) * | 2007-10-24 | 2009-05-14 | Honda Motor Co Ltd | モデル設計システム |
JP2011045905A (ja) * | 2009-08-26 | 2011-03-10 | Toyota Motor Corp | プレス成形方法 |
WO2012161050A1 (ja) * | 2011-05-20 | 2012-11-29 | 新日鐵住金株式会社 | プレス成形方法及び車体部品 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7260972B2 (en) * | 2004-03-10 | 2007-08-28 | General Motors Corporation | Method for production of stamped sheet metal panels |
US8091201B2 (en) * | 2005-06-30 | 2012-01-10 | Middleville Tool & Die Co, Inc | Stamped tubular member and method and apparatus for making same |
US20090272171A1 (en) * | 2008-05-05 | 2009-11-05 | Ford Global Technologies, Llc | Method of designing and forming a sheet metal part |
US9522419B2 (en) * | 2008-05-05 | 2016-12-20 | Ford Global Technologies, Llc | Method and apparatus for making a part by first forming an intermediate part that has donor pockets in predicted low strain areas adjacent to predicted high strain areas |
CN101372024B (zh) * | 2008-09-27 | 2010-07-28 | 沈阳黎明航空发动机(集团)有限责任公司 | 一种拉深成形抛物线回转体的方法 |
JP2011206789A (ja) | 2010-03-29 | 2011-10-20 | Kobe Steel Ltd | プレス成形方法 |
-
2014
- 2014-07-08 WO PCT/JP2014/003620 patent/WO2015004908A1/ja active Application Filing
- 2014-07-08 KR KR1020167003309A patent/KR101815403B1/ko active IP Right Grant
- 2014-07-08 JP JP2015526168A patent/JP5867657B2/ja active Active
- 2014-07-08 CN CN201480038949.9A patent/CN105451908B/zh active Active
- 2014-07-08 MX MX2016000001A patent/MX2016000001A/es unknown
- 2014-07-08 US US14/903,818 patent/US10730090B2/en active Active
- 2014-07-08 CN CN201710978116.6A patent/CN107737829B/zh active Active
- 2014-07-08 EP EP14823787.8A patent/EP3020492B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0684183A2 (en) * | 1994-03-30 | 1995-11-29 | Eberhard Jahn | Method of forming a slim package |
JP2007098443A (ja) * | 2005-10-05 | 2007-04-19 | Toyota Motor Corp | プレス成形方法及びプレス成形装置 |
JP2007118021A (ja) | 2005-10-26 | 2007-05-17 | Isuzu Motors Ltd | プレス成形品の成形方法およびプレス成形装置 |
JP2007326112A (ja) | 2006-06-06 | 2007-12-20 | Hiroshima Pref Gov | プレス成形方法 |
JP2009104456A (ja) * | 2007-10-24 | 2009-05-14 | Honda Motor Co Ltd | モデル設計システム |
JP2011045905A (ja) * | 2009-08-26 | 2011-03-10 | Toyota Motor Corp | プレス成形方法 |
WO2012161050A1 (ja) * | 2011-05-20 | 2012-11-29 | 新日鐵住金株式会社 | プレス成形方法及び車体部品 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3020492A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016144825A (ja) * | 2015-02-09 | 2016-08-12 | 日新製鋼株式会社 | 2次プレス加工性評価方法 |
JP6133965B1 (ja) * | 2015-12-17 | 2017-05-24 | 日新製鋼株式会社 | 伸びフランジ性の評価方法 |
JP2017109227A (ja) * | 2015-12-17 | 2017-06-22 | 日新製鋼株式会社 | 伸びフランジ性の評価方法 |
JP7020599B1 (ja) * | 2020-09-02 | 2022-02-16 | Jfeスチール株式会社 | プレス部品の製造方法、金型の設計方法、金型形状設計装置、及び金型 |
WO2022049905A1 (ja) * | 2020-09-02 | 2022-03-10 | Jfeスチール株式会社 | プレス部品の製造方法、金型の設計方法、金型形状設計装置、及び金型 |
Also Published As
Publication number | Publication date |
---|---|
CN107737829B (zh) | 2019-10-01 |
CN105451908A (zh) | 2016-03-30 |
US10730090B2 (en) | 2020-08-04 |
JPWO2015004908A1 (ja) | 2017-03-02 |
US20160160311A1 (en) | 2016-06-09 |
KR101815403B1 (ko) | 2018-01-08 |
EP3020492A1 (en) | 2016-05-18 |
MX2016000001A (es) | 2016-03-09 |
CN105451908B (zh) | 2018-05-04 |
CN107737829A (zh) | 2018-02-27 |
EP3020492A4 (en) | 2016-07-06 |
EP3020492B1 (en) | 2020-05-06 |
JP5867657B2 (ja) | 2016-02-24 |
KR20160030975A (ko) | 2016-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5867657B2 (ja) | 板材の成形方法、及び予成形形状の設定方法 | |
CN104077439B (zh) | 一种新型高强钢轮辐拉深冲孔复合工序的数值模拟方法 | |
CN107532980B (zh) | 剪切边缘能否成型的评价方法 | |
CN110293167B (zh) | Suv汽车后背门外板拉延工艺面造型方法 | |
JP6512191B2 (ja) | 金型の設計方法およびプレス成形品の製造方法 | |
CN102672059A (zh) | 根据仿真冲压工件厚度确定出模具凹凸模修改型面的方法 | |
CN104971975A (zh) | 一种拉伸与冲压复合的蒙皮成形工艺 | |
CA3046944A1 (en) | Metal sheet forming method, intermediate shape design method, metal sheet forming die, computer program, and recording medium | |
CN107649629A (zh) | 大高径比镁合金棒料消除各向异性的大塑形变形制坯方法 | |
US11097330B2 (en) | Method for producing a formed component having a dimensionally accurate wall region | |
CN105091825A (zh) | 一种蒙皮铣切区域厚度的检测方法 | |
TWI632965B (zh) | 無餘料扳手製法 | |
JP2008246569A (ja) | 鍛造成形用金型の製造方法 | |
US11731187B2 (en) | Press forming method, rigidity-improvement-position specifying method, press forming system, and press-formed product | |
CN108345703A (zh) | 一种基于cae的内高压成型优化分析方法和系统 | |
JP2017070976A (ja) | パネル部品の製造方法 | |
JP2021164954A (ja) | プレス部品の製造方法、曲げ戻し用の金型、プレス部品の成形方法及び高強度鋼板 | |
JP2008168313A (ja) | 体積が不均一な区分からなるフランジ部を有する部材のフラッシュ無し鍛造法 | |
JP6176429B1 (ja) | プレス成形品の製造方法 | |
US7640144B2 (en) | Method for simulating a hydroforming process | |
JP6519984B2 (ja) | 同時異種加工管部材の製造方法 | |
CN109475916B (zh) | 冲压件制造方法 | |
MX2020001926A (es) | Metodo para producir un cigue?al forjado. | |
JP7264116B2 (ja) | プレス成形品の剛性評価方法、形状決定方法およびプレス成形品の製造方法 | |
Tzou et al. | Multi-stage forging on torx-pin screw with high torque |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480038949.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14823787 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015526168 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014823787 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2016/000001 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14903818 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20167003309 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: IDP00201600776 Country of ref document: ID |