WO2013005318A1 - ホットプレス成形方法、及びホットプレス装置 - Google Patents
ホットプレス成形方法、及びホットプレス装置 Download PDFInfo
- Publication number
- WO2013005318A1 WO2013005318A1 PCT/JP2011/065501 JP2011065501W WO2013005318A1 WO 2013005318 A1 WO2013005318 A1 WO 2013005318A1 JP 2011065501 W JP2011065501 W JP 2011065501W WO 2013005318 A1 WO2013005318 A1 WO 2013005318A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- workpiece
- hot press
- molding
- mold
- molding surface
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- 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
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
Definitions
- the present invention relates to a hot press molding method and a hot press apparatus for performing cooling on a heated work piece at the same time as cooling.
- a workpiece such as a steel plate heated to a temperature at which an austenite structure appears or higher is pressed by a press device to which a die composed of an upper die and a lower die is attached, and at the same time, the die contacts the workpiece.
- Hot press molding is widely known in which quenching is performed using cooling by means of cooling.
- Patent Documents In hot press molding, a technique for cooling a mold by forming a water channel through which cooling water flows inside the mold and cooling the work well during quenching is known (for example, Patent Documents). 1).
- An object of the present invention is to provide a hot press molding method and a hot press apparatus capable of quenching a workpiece at a sufficient cooling rate.
- the hot press molding method of the present invention uses a lower mold and an upper mold provided so that the molding surfaces face each other, and performs hot pressing on a heated workpiece and simultaneously cools the workpiece.
- a method of pressing the workpiece so that a portion of the workpiece that does not easily contact the molding surface of the lower die and the molding surface of the upper die located at the bottom dead center is molded into a step shape. I do.
- the hot press apparatus of the present invention includes a lower mold and an upper mold provided so that the molding surfaces face each other, and simultaneously presses a heated work by being sandwiched between the lower mold and the upper mold.
- a hot press apparatus for cooling the workpiece by holding the molding surface of the lower mold and the molding surface of the upper mold in contact with the surface of the workpiece, the molding of the lower mold in the workpiece.
- the molding surface of at least one of the lower mold and the upper mold is formed as an uneven surface so that a portion that is difficult to contact with the molding surface of the upper mold located at the surface and the bottom dead center is molded into a step shape.
- a convex portion that protrudes toward the other molding surface is continuous along the front-rear direction on the molding surface of one of the lower mold and the upper mold in the middle in the left-right direction.
- the other molding surface of the lower mold and the upper mold is continuously formed along the front-rear direction in the middle in the left-right direction so as to be recessed according to the shape of the projection.
- the forming surface on which the convex portion is formed has a top surface extending along the left-right direction at the protruding end portion of the convex portion, and a protruding direction of the convex portion from both ends in the left-right direction of the top surface And two side surfaces extending in the opposite direction, and two base end surfaces extending outward in the left-right direction from the extending end portions of the two side surfaces, the top surface as an uneven surface Preferably it is formed.
- the workpiece can be quenched at a sufficient cooling rate, and the hardness of the workpiece can be suppressed from being partially smaller than a desired value.
- the figure which shows the hot press apparatus which concerns on this invention The perspective view which shows a bead.
- the figure which shows the press processing of the workpiece The perspective view which shows another form of a bead.
- the hot press apparatus 1 is an apparatus that performs hot press forming on the workpiece W.
- the workpiece W is a steel plate to be processed by the hot press apparatus 1 and is heated to a temperature equal to or higher than the temperature at which an austenite structure appears by energization heating or the like.
- the vertical direction in FIG. 1 is defined as the vertical direction of the hot press apparatus 1
- the horizontal direction in FIG. 1 is defined as the horizontal direction of the hot press apparatus 1.
- the front side of the paper surface in FIG. 1 is defined as the front side of the hot press device 1 and the back side of the paper surface is defined as the rear side of the hot press device 1.
- the hot press apparatus 1 includes a lower mold 10 and an upper mold 20 provided so that their molding surfaces face each other.
- the lower mold 10 is a mold corresponding to the upper mold 20 and is manufactured by performing NC processing on a predetermined metal lump.
- the lower mold 10 is configured such that cooling water flows inside the lower mold 10.
- the convex part 11 is a part formed so that the molding surface of the lower mold 10 protrudes upward, and is continuous along the front-rear direction in the middle part (substantially central part) in the left-right direction of the molding surface of the lower mold 10. Is formed.
- the top surface 10 a extending along the left-right direction at the projecting end portion (uppermost portion) of the convex portion 11, and the projecting direction of the convex portion 11 from both ends in the left-right direction of the top surface 10 a are Side faces 10b and 10b extending in the opposite direction (downward) and base end faces 10c and 10c extending outward from the extending end (lower end) of the side faces 10b and 10b in the left-right direction are so-called hats. It is formed as a mold-shaped molding surface. A plurality of beads 12, 12... Are provided on the top surface 10 a of the lower mold 10.
- the bead 12 protrudes upward from the top surface 10 a, and a semicircular cross section in which the arc is located on the upper side from the vicinity of the front end portion of the convex portion 11 to the vicinity of the rear end portion extends along the front-rear direction. It is formed to be continuous.
- the bead 12 has a shape obtained by dividing a cylinder having an axis parallel to the front-rear direction into two equal parts along the axis, and a plane (cut when the cylinder is divided into two equal parts). Is arranged so as to be in contact with the top surface 10a.
- a plurality of beads 12 (three in the present embodiment) are provided along the left-right direction at predetermined intervals.
- the bead 12 is made of the same type of metal as the lower mold 10 or a metal having higher hardness than the lower mold 10.
- the bead 12 is formed by performing NC processing so that the build-up portion has a predetermined shape after performing build-up welding on the top surface 10a, or forming the lower mold 10 from a predetermined metal lump. It is formed by performing NC processing or the like so that the surface 10a has a predetermined shape.
- the bead 12 is provided in order to make the top surface 10a of the lower mold 10 an uneven surface.
- type 20 is a metal mold
- the upper mold 20 is configured such that cooling water flows inside the upper mold 20.
- a recess 21 is formed on the molding surface (lower surface) of the upper mold 20 so as to be recessed upward in accordance with the shape of the protrusion 11.
- the concave portion 21 is a portion formed so that the molding surface of the upper mold 20 is recessed upward, and is continuously formed along the front-rear direction in a midway portion (substantially central portion) in the left-right direction of the molding surface of the upper mold 20. Has been.
- the bottom surface 20 a extending along the left-right direction at the deepest portion (uppermost portion) of the recess 21, and the direction in which the recess 21 is recessed from the both ends in the left-right direction of the bottom surface 20 a (downward)
- Side surfaces 20b and 20b extending in the horizontal direction, and base end surfaces 20c and 20c extending outwardly in the left-right direction from the extended end portions (lower end portions) of the side surfaces 20b and 20b are so-called hat-shaped molding surfaces. It is formed as.
- the upper plate 20 is lowered to the bottom dead center so that the upper plate 20 approaches the lower plate 10, whereby the heated plate-like workpiece W is moved to the lower plate 10 and the upper plate.
- the workpiece W is pressed between the two molding surfaces to form a so-called hat shape, and at the same time, the molding surface of the lower die 10 and the molding surface of the upper die 20 are in contact with the surface of the workpiece W.
- the workpiece W is cooled, and the workpiece W as a product is produced.
- the hot press molding step S1 which is an embodiment of the hot press molding method according to the present invention, will be described with reference to FIGS.
- the hot press molding step S ⁇ b> 1 is a step of performing hot press molding on the workpiece W using the hot press apparatus 1.
- the heated plate-like workpiece W is moved between the molding surfaces of the lower die 10 and the upper die 20 by lowering the upper die 20 to the bottom dead center so as to approach the lower die 10.
- the workpiece W is subjected to a quenching process using cooling by contact between the lower mold 10 and the upper mold 20 and the workpiece W while performing the pressing process.
- the top surface 10 a of the lower mold 10 is provided with a plurality of beads 12, 12.
- the positioned top plate portion Wt (portion corresponding to the top surface 10a) is formed into a step shape along the shape of the plurality of beads 12. That is, the plurality of beads 12, 12,... Are means for giving the workpiece W a step shape with the top surface 10 a as an uneven surface.
- the “step shape” of the workpiece W is a shape curved so that the workpiece W protrudes toward the molding surface of the lower mold 10 and the molding surface of the upper mold 20.
- two portions projecting toward the molding surface (top surface 10a) of the lower die 10 are formed, and three portions projecting toward the molding surface (bottom surface 20a) of the upper die 20 are formed.
- the corrugated step shape is formed.
- the top plate portion Wt of the workpiece W is molded so as to protrude toward the molding surface of the lower mold 10 and the molding surface of the upper die 20, the top plate portion Wt is not molded into a step shape.
- the contact area of the top plate Wt with respect to the molding surface of the lower mold 10 where the beads 12 are not provided and the molding surface of the upper mold 20 is increased. growing.
- the top plate portion Wt of the work W is formed so as to follow the shape of the plurality of beads 12, 12... Provided on the top surface 10 a of the lower mold 10, the work W in the hot press forming step S 1 is formed.
- the top plate portion Wt comes into contact with the plurality of beads 12, 12... Forming a part of the molding surface of the lower mold 10, and the plurality of beads 12, 12.
- the contact area of the top plate portion Wt with the molding surface of the lower mold 10 is increased.
- a plurality of beads 12, 12... are provided on the top surface 10 a of the lower mold 10 so that the top plate portion Wt of the workpiece W is formed in a step shape.
- a relatively large clearance is easily generated between the top plate portion Wt of the workpiece W and the lower die and the upper die when the workpiece W formed in the hat shape is quenched (see FIG. 8).
- the hardness of Wt is likely to be smaller than a desired value. That is, the top surface 10a of the lower mold 10 is formed in a step shape so that the part of the workpiece W that is difficult to contact the molding surface of the lower mold 10 and the molding surface of the upper mold 20 located at the bottom dead center is formed in a step shape.
- a plurality of beads 12, 12... are provided.
- the “part that is difficult to contact” with respect to the molding surface of the lower die 10 and the molding surface of the upper die 20 located at the bottom dead center is a plurality of beads 12 and 12 when the workpiece W is quenched. Is a portion where the clearance amount (distance) between the lower and upper molds and the workpiece W is not more than a predetermined value, and the hardness after hot press molding is a predetermined value. It is a part that becomes (insufficient) as follows. The part can be specified in advance by simulation or the like.
- the plate portion Wt can be formed into a step shape. Therefore, when the workpiece W is quenched in the hot press molding step S1, the contact area between the top plate portion Wt of the workpiece W and the molding surfaces of the lower mold 10 and the upper mold 20 is increased, and the hardness of the top plate portion Wt is reduced. Therefore, good hardness can be secured for the entire workpiece W. As a result, it is not necessary to rework the mold so as to make good contact with the workpiece W, and the number of man-hours for manufacturing the mold can be reduced. Furthermore, by increasing the contact area between the molding surface of the mold and the workpiece W, the time required for quenching the workpiece W can be shortened, and the production speed of the product can be improved.
- a plurality of beads 12, 12... are provided only on the top surface 10a of the lower mold 10.
- the present invention is not limited to this, and the top plate portion Wt is formed in a step shape. That's fine.
- a plurality of beads similar to the beads 12 are provided on the bottom surface 20 a of the upper mold 20, or the bottom surface of the upper mold 20. It is also possible to provide a plurality of beads similar to the beads 12 only on the 20a.
- the beads 112 and the beads 122 formed so as to dent the molding surface of the mold do not protrude from the molding surface of the mold like the beads 12, and the lower mold 10 and the beads 122 are respectively formed.
- the bead 112 is formed on the top surface 10a of the lower mold 10 so that a semicircular cross section in which the circular arc is located on the lower side is continuous in the front-rear direction, and is separated from each other by a predetermined interval along the left-right direction. One is provided.
- the bead 112 is provided to make the top surface 10a of the lower mold 10 an uneven surface.
- Three beads 122 are formed on the bottom surface 20a of the upper mold 20 so that a semicircular cross section with an arc positioned on the upper side is continuous in the front-rear direction, and are provided at predetermined intervals along the left-right direction. It has been.
- the bead 112 is provided to make the bottom surface 20a of the upper mold 20 an uneven surface.
- the beads 112 and the beads 122 are alternately arranged so as to shift their positions along the left-right direction.
- NC processing may be performed so as to cut the molding surface of the mold.
- a plurality of beads 12, 12... are provided on the top surface 10 a that is a molding surface located at the uppermost portion of the lower mold 10.
- the top surface 10 a is a molding surface positioned at the uppermost part of the lower mold 10.
- the workpiece W comes into contact with the surface 10a relatively early.
- the portion that finally becomes the top plate portion Wt is processed relatively early. Therefore, when the upper mold 20 reaches the vicinity of the bottom dead center (for example, 1 mm above the bottom dead center), the top plate portion Wt of the workpiece W is formed into a step shape.
- three beads 12 having a shape obtained by dividing a cylinder into two halves are provided at predetermined intervals along the left-right direction (see FIG. 2), but the workpiece W has a step shape.
- the configuration of the bead is not limited as long as it can be given.
- the bead 212 protrudes upward from the top surface 10a so as to form a rectangular shape when viewed from above, and has a flat upper surface.
- the bead 212 is continuously formed from the vicinity of the left end portion of the top surface 10a of the lower mold 10 to the vicinity of the right end portion thereof, and continuously from the vicinity of one end portion of the top surface 10a of the lower mold 10 to the vicinity of the center portion thereof. Is formed.
- the bead 212 is provided to make the top surface 10a of the lower mold 10 an uneven surface.
- the bead 312 has a shape obtained by dividing a sphere into two equal parts, and is arranged such that a plane (cut surface when the sphere is divided into two equal parts) is in contact with the top surface 10a.
- Three beads 312 are provided at predetermined intervals along the left-right direction, and a large number of the three beads 312 are provided at predetermined intervals along the front-rear direction.
- the bead 312 is provided to make the top surface 10a of the lower mold 10 an uneven surface.
- the lower mold 10 having the convex portions 11 and the upper mold 20 having the concave portions 21 are used.
- the lower mold having the concave portions and the upper mold 20 having the convex portions are formed. It is also possible to use a mold.
- type 20 in this embodiment were made into the shape for shape
- the present invention can be used for hot press molding and hot press apparatus in which a heated workpiece is cooled at the same time as being pressed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
ホットプレス装置1は、ワークWに対してホットプレス成形を施す装置である。
ワークWは、ホットプレス装置1の加工対象となる鋼板であり、通電加熱等によりオーステナイト組織が現れる温度以上まで加熱されている。
なお、説明の便宜上、図1における上下方向をホットプレス装置1の上下方向と規定し、図1における左右方向をホットプレス装置1の左右方向と規定する。更に、図1における紙面手前側をホットプレス装置1の前方、同じく紙面奥側をホットプレス装置1の後方と規定する。
下型10の成形面(上面)には、上方に突出する凸部11が形成されている。
凸部11は、下型10の成形面が上方に突出するように形成された部位であり、下型10の成形面の左右方向における中途部(略中央部)において、前後方向に沿って連続的に形成されている。
下型10の頂面10aには、複数のビード12・12・・・が設けられている。
ビード12は、左右方向に沿って、互いに所定の間隔を空けて複数(本実施形態においては、三つ)設けられている。
ビード12は、下型10と同種の金属、又は下型10よりも高い硬度を有する金属から成る。ビード12は、頂面10aに肉盛溶接を行った後、当該肉盛部分が所定の形状となるようにNC加工を行うこと、又は下型10を所定の金属塊から作製する段階で、頂面10aが所定の形状となるようにNC加工を行うこと等により形成される。
このように、ビード12は、下型10の頂面10aを凹凸面とするために設けられる。
上型20の成形面(下面)には、凹部21が凸部11の形状に合わせて上方に窪むように形成されている。
凹部21は、上型20の成形面が上方に窪むように形成された部位であり、上型20の成形面の左右方向における中途部(略中央部)において、前後方向に沿って連続的に形成されている。
ホットプレス成形工程S1は、ホットプレス装置1を用いて、ワークWに対してホットプレス成形を施す工程である。
ここで、ワークWの「段形状」とは、ワークWが下型10の成形面、及び上型20の成形面に向けて突出するように湾曲した形状である。本実施形態におけるワークWは、下型10の成形面(頂面10a)に向けて突出する部分が二箇所形成され、上型20の成形面(底面20a)に向けて突出する部分が三箇所形成された波型の段形状となっている。
更に、ワークWの天板部Wtが下型10の頂面10aに設けられた複数のビード12・12・・・の形状に沿うように成形されるため、ホットプレス成形工程S1におけるワークWの焼入れ時に、天板部Wtが下型10の成形面の一部を成す複数のビード12・12・・・に沿うように接触し、下型10の頂面10aに複数のビード12・12・・・が設けられてない場合と比較して、下型10の成形面に対する天板部Wtの接触面積が大きくなる。
これにより、ホットプレス成形工程S1におけるワークWの焼入れ時に、ワークWの天板部Wtにおいて充分な冷却速度を担保でき、天板部Wtの硬度が所望の値よりも小さくなることを抑制することができる。
これは、ハット型形状に成形されたワークWの焼入れ時に、ワークWの天板部Wtと、下型及び上型との間に比較的大きなクリアランスが生じ易く(図8参照)、天板部Wtの硬度が所望の値よりも小さくなる可能性が高いためである。
つまり、ワークWにおける、下型10の成形面及び下死点に位置する上型20の成形面に対して接触し難い部分が段形状に成形されるように、下型10の頂面10aに複数のビード12・12・・・を設けるのである。
ここで、ワークWにおける、下型10の成形面及び下死点に位置する上型20の成形面に対して「接触し難い部分」とは、ワークWの焼入れ時に、複数のビード12・12・・・が設けられていない従来の下型及び上型と、ワークWとの間のクリアランス量(距離)が所定値以上となる部分であり、延いてはホットプレス成形後の硬度が所定値以下となる(不充分となる)部分である。当該部分は、予めシミュレーション等によって特定することが可能である。
したがって、ホットプレス成形工程S1におけるワークWの焼入れ時に、ワークWの天板部Wtと、下型10及び上型20の成形面との接触面積を大きくして、天板部Wtの硬度の低下を抑制し、ワークW全体として良好な硬度を担保することができるのである。
また、これに伴い、ワークWと良好に接触するように金型を作製し直す作業等を行う必要がなくなり、金型を作製する際の人工的工数を削減することができる。更に、金型の成形面とワークWとの接触面積の増加により、ワークWの焼入れに要する時間を短縮することができ、延いては製品の生産速度を向上させることができる。
例えば、下型10の頂面10aに設けられた複数のビード12・12・・・に加えて、上型20の底面20aにビード12と同様のビードを複数設けること、又は上型20の底面20aのみにビード12と同様のビードを複数設けること等も可能である。
ビード112は、円弧が下側に位置する半円状の断面が前後方向に沿って連続するように下型10の頂面10aに形成され、左右方向に沿って互いに所定の間隔を空けて二つ設けられている。ビード112は、下型10の頂面10aを凹凸面とするために設けられる。
ビード122は、円弧が上側に位置する半円状の断面が前後方向に沿って連続するように上型20の底面20aに形成され、左右方向に沿って互いに所定の間隔を空けて三つ設けられている。ビード112は、上型20の底面20aを凹凸面とするために設けられる。
ビード112及びビード122は、左右方向に沿って、互いの位置をずらすように交互に配置されている。
なお、ビード112及びビード122のようなビードを形成する場合には、金型の成形面を切削するようにNC加工を行えばよい。
図5に示すように、上型20を下死点まで下降させるように構成されたホットプレス装置1においては、ワークWのプレス加工時に、下型10の最上部に位置する成形面である頂面10aにワークWが比較的早期に接触する。換言すれば、最終的に天板部Wtとなる部分が比較的早期に加工される。
そのため、上型20が下死点近傍(例えば、下死点より1mm上方)まで到達した時点で、ワークWの天板部Wtが段形状に成形されることとなる。つまり、複数のビード12・12・・・は、上型20が下死点近傍まで到達した時点で、ワークWの天板部Wtに段形状が成形されるような位置に配置されている。
これにより、ワークWのプレス加工途中の段階から、ワークWの天板部Wtと、下型10の成形面との接触面積を大きくして、天板部Wtの硬度の低下を更に抑制することができる。
例えば、図6に示すように、扁平形状のビード212を前後方向に沿って、互いに所定の間隔を空けて二つ設けることも可能である。
ビード212は、上方から見て、矩形状を成すように、頂面10aから上方に突出し、平坦な上面を有している。ビード212は、下型10の頂面10aの左端部近傍から右端部近傍にかけて連続的に形成され、かつ、下型10の頂面10aの前後方向における一端部近傍から中央部近傍にかけて連続的に形成されている。ビード212は、下型10の頂面10aを凹凸面とするために設けられる。
ビード312は、球体を二等分した形状を有しており、その平面(球体を二等分した際の切断面)が頂面10aに接触するように配置されている。ビード312は、左右方向に沿って、互いに所定の間隔を空けて三つ設けられ、更に当該三つのビード312が前後方向に沿って、互いに所定の間隔を空けて多数設けられている。ビード312は、下型10の頂面10aを凹凸面とするために設けられる。
また、本実施形態における下型10及び上型20は、ワークWをハット型形状に成形するための形状としたが、当該形状に限定するものではなく、他の金型形状とすることも可能である。
10 下型
10a 頂面
10b 側面
10c 基端面
11 凸部
12 ビード
20 上型
20a 底面
20b 側面
20c 基端面
21 凹部
Claims (3)
- 互いの成形面が対向するように設けられた下型及び上型を用いて、加熱されたワークに対して、プレス加工を行うと同時に冷却を行うホットプレス成形方法であって、
前記ワークにおける、前記下型の成形面及び下死点に位置する前記上型の成形面に対して接触し難い部分が段形状に成形されるように、前記ワークのプレス加工を行う、
ことを特徴とするホットプレス成形方法。 - 互いの成形面が対向するように設けられた下型及び上型を具備し、
加熱されたワークを前記下型及び前記上型によって挟み込んでプレス加工を行うと同時に、前記ワークの表面に前記下型の成形面及び前記上型の成形面を接触させた状態で保持することで前記ワークを冷却するホットプレス装置であって、
前記ワークにおける、前記下型の成形面及び下死点に位置する前記上型の成形面に対して接触し難い部分が段形状に成形されるように、前記下型及び前記上型の少なくとも一方の成形面が凹凸面として形成される、
ことを特徴とするホットプレス装置。 - 前記下型及び前記上型のうちの一方の成形面には、左右方向における中途部において、他方の成形面に向けて突出する凸部が前後方向に沿って連続的に形成され、
前記下型及び前記上型のうちの他方の成形面には、左右方向における中途部において、前記凸部の形状に合わせて窪む凹部が前後方向に沿って連続的に形成され、
前記凸部が形成された成形面は、当該凸部の突出端部にて左右方向に沿って延在する頂面と、当該頂面の左右方向における両端部から前記凸部の突出方向とは逆方向に延出する二つの側面と、当該二つの側面の延出端部から左右方向に沿って外方に延出する二つの基端面と、から成り、
前記頂面が凹凸面として形成される、
ことを特徴とする請求項2に記載のホットプレス装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112011105406.8T DE112011105406T5 (de) | 2011-07-06 | 2011-07-06 | Heißpressvorrichtung |
JP2013522655A JP5704237B2 (ja) | 2011-07-06 | 2011-07-06 | ホットプレス装置 |
CN201180072104.8A CN103648673A (zh) | 2011-07-06 | 2011-07-06 | 热压成形方法以及热压装置 |
PCT/JP2011/065501 WO2013005318A1 (ja) | 2011-07-06 | 2011-07-06 | ホットプレス成形方法、及びホットプレス装置 |
US14/129,633 US20140130564A1 (en) | 2011-07-06 | 2011-07-06 | Hot-pressing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/065501 WO2013005318A1 (ja) | 2011-07-06 | 2011-07-06 | ホットプレス成形方法、及びホットプレス装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013005318A1 true WO2013005318A1 (ja) | 2013-01-10 |
Family
ID=47436690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/065501 WO2013005318A1 (ja) | 2011-07-06 | 2011-07-06 | ホットプレス成形方法、及びホットプレス装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140130564A1 (ja) |
JP (1) | JP5704237B2 (ja) |
CN (1) | CN103648673A (ja) |
DE (1) | DE112011105406T5 (ja) |
WO (1) | WO2013005318A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140069163A1 (en) * | 2011-05-16 | 2014-03-13 | Toyota Jidosha Kabushiki Kaisha | Hot-pressing die and method for manufacturing the same |
JP7163475B1 (ja) | 2021-12-20 | 2022-10-31 | 株式会社ジーテクト | 熱間プレス成型用金型 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013023906A1 (de) * | 2011-08-17 | 2013-02-21 | Kirchhoff Automotive Deutschland Gmbh | Presshärtwerkzeug |
US9321090B2 (en) * | 2012-05-07 | 2016-04-26 | Ford Global Technologies, Llc | Forming tools having textured surfaces |
DE102013108044B3 (de) * | 2013-07-26 | 2014-11-20 | Voestalpine Metal Forming Gmbh | Kühlkörper mit Abstandhalter |
KR102028068B1 (ko) * | 2014-12-25 | 2019-10-02 | 닛폰세이테츠 가부시키가이샤 | 패널형상 성형품의 제조 방법 |
US11684963B2 (en) * | 2017-10-12 | 2023-06-27 | Nippon Steel Corporation | Method and apparatus for producing outer panel having character line |
JP7127331B2 (ja) * | 2018-03-30 | 2022-08-30 | マツダ株式会社 | 熱間プレス加工方法および加工装置 |
KR102513574B1 (ko) * | 2021-08-26 | 2023-03-24 | 현대제철 주식회사 | 핫 스탬핑용 금형 장치 및 핫 스탬핑 부품의 제조 방법 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003285120A (ja) * | 2002-01-22 | 2003-10-07 | Nippon Steel Corp | 金属製薄板製品の残留応力低減方法および金型装置 |
JP2010036208A (ja) * | 2008-08-04 | 2010-02-18 | Sumitomo Metal Ind Ltd | 金属板の熱間プレス成形方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002241835A (ja) * | 2001-02-20 | 2002-08-28 | Aisin Takaoka Ltd | ワークの部分強化方法 |
JP4166019B2 (ja) * | 2002-02-07 | 2008-10-15 | トヨタ車体株式会社 | プレス加工品の歪み除去方法 |
JP4325277B2 (ja) * | 2003-05-28 | 2009-09-02 | 住友金属工業株式会社 | 熱間成形法と熱間成形部材 |
JP3863874B2 (ja) * | 2003-10-02 | 2006-12-27 | 新日本製鐵株式会社 | 金属板材の熱間プレス成形装置及び熱間プレス成形方法 |
-
2011
- 2011-07-06 US US14/129,633 patent/US20140130564A1/en not_active Abandoned
- 2011-07-06 DE DE112011105406.8T patent/DE112011105406T5/de not_active Ceased
- 2011-07-06 JP JP2013522655A patent/JP5704237B2/ja not_active Expired - Fee Related
- 2011-07-06 CN CN201180072104.8A patent/CN103648673A/zh active Pending
- 2011-07-06 WO PCT/JP2011/065501 patent/WO2013005318A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003285120A (ja) * | 2002-01-22 | 2003-10-07 | Nippon Steel Corp | 金属製薄板製品の残留応力低減方法および金型装置 |
JP2010036208A (ja) * | 2008-08-04 | 2010-02-18 | Sumitomo Metal Ind Ltd | 金属板の熱間プレス成形方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140069163A1 (en) * | 2011-05-16 | 2014-03-13 | Toyota Jidosha Kabushiki Kaisha | Hot-pressing die and method for manufacturing the same |
US9452460B2 (en) * | 2011-05-16 | 2016-09-27 | Toyota Jidosha Kabushiki Kaisha | Hot-pressing die and method for manufacturing the same |
JP7163475B1 (ja) | 2021-12-20 | 2022-10-31 | 株式会社ジーテクト | 熱間プレス成型用金型 |
WO2023120313A1 (ja) * | 2021-12-20 | 2023-06-29 | 株式会社ジーテクト | 熱間プレス成型用金型 |
JP2023091177A (ja) * | 2021-12-20 | 2023-06-30 | 株式会社ジーテクト | 熱間プレス成型用金型 |
US11975379B2 (en) | 2021-12-20 | 2024-05-07 | G-Tekt Corporation | Hot press forming die |
Also Published As
Publication number | Publication date |
---|---|
JP5704237B2 (ja) | 2015-04-22 |
CN103648673A (zh) | 2014-03-19 |
JPWO2013005318A1 (ja) | 2015-02-23 |
DE112011105406T5 (de) | 2014-05-15 |
US20140130564A1 (en) | 2014-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5704237B2 (ja) | ホットプレス装置 | |
DE502006002967D1 (de) | Formwerkzeug | |
JP6561608B2 (ja) | プレス金型装置 | |
JP6314926B2 (ja) | プレス加工装置 | |
JP5644942B2 (ja) | ホットプレス用金型、及びホットプレス用金型の製造方法 | |
JP5199805B2 (ja) | ダイクエンチ加工製品とその製造方法及び製造装置 | |
JP2013094793A (ja) | ホットプレス成形方法、及びホットプレス成形による成形品、並びに、ホットプレス用金型 | |
JP6028678B2 (ja) | 成形金型装置 | |
JP6112286B1 (ja) | 熱間プレス法および熱間プレスシステム | |
JP2018069305A (ja) | プレス加工装置 | |
WO2012160703A1 (ja) | ホットプレス用金型 | |
JP2012236199A (ja) | 被プレス加工物の位置決め構造及びプレス加工装置 | |
KR101439674B1 (ko) | 열간 롤 스탬핑장치 및 방법 | |
CN105170833A (zh) | 一种齿轮环精冲拉伸成形方法 | |
JP4817183B2 (ja) | ワッシャの製造方法 | |
JP2015077621A (ja) | プレス加工方法 | |
JP2014004606A (ja) | アール曲げ用金型 | |
JP7158153B2 (ja) | ホットスタンプ成形品の製造方法、ホットスタンプ成形品用金型及び該金型を用いて成形されたホットスタンプ成形品 | |
WO2009096309A1 (ja) | 板金プレス加工方法、その金型及び成形品 | |
CN208759991U (zh) | 一种汽车后备箱中的隔物板成型模 | |
TW201813735A (zh) | 熱壓法及熱壓系統 | |
KR101575826B1 (ko) | 파인블랭킹 금형 | |
KR101433345B1 (ko) | 블랭크 가공 금형의 스트립 홀딩 부재 | |
KR101731502B1 (ko) | 캐리어 제조용 열간단조장치 및 방법 | |
JP2003136541A (ja) | タイヤ成形用金型に埋設する三次元ブレード板の製造方法及びその三次元ブレード板の製造用金型 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11868869 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013522655 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14129633 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120111054068 Country of ref document: DE Ref document number: 112011105406 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11868869 Country of ref document: EP Kind code of ref document: A1 |