WO2006080356A1 - プレス加工装置、プレス加工方法、及び打抜き加工品 - Google Patents
プレス加工装置、プレス加工方法、及び打抜き加工品 Download PDFInfo
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- WO2006080356A1 WO2006080356A1 PCT/JP2006/301152 JP2006301152W WO2006080356A1 WO 2006080356 A1 WO2006080356 A1 WO 2006080356A1 JP 2006301152 W JP2006301152 W JP 2006301152W WO 2006080356 A1 WO2006080356 A1 WO 2006080356A1
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- Prior art keywords
- punch
- die
- plate material
- punched
- punching
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- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
Definitions
- Press processing apparatus press processing method, and punched product
- the present invention is a press processing apparatus for punching a relatively thick plate material as a base material such as an element of a continuously variable transmission belt or a press-formed part of an automatic transmission, for example.
- the present invention relates to a method and a punched product manufactured by the above-mentioned pressing apparatus.
- the punch faces the convex portion of the plate material (half-blanked portion). While being arrange
- the punch pushes the half-blanked portion of the plate to the die side, whereby the half-blanked portion becomes a blanking member and the plate force is punched out, In this case, a through hole having a shape corresponding to the object to be punched is formed.
- the first conventional device punches a half-cut portion from the plate material as a punched body
- the side wall surface of the through-hole of the plate material (a plate-like punched member is also punched out)
- Most of the punching surface) along the punching direction of the part and most of the side wall surface (punching surface along the punching direction) of the object to be punched become rough fracture surfaces, respectively. Therefore, when the plate material having the through holes and the punched body are each manufactured as a stamped product, the entire side wall surface including the rough fractured surface is flat. It is necessary to further use a separate device (polishing device etc.) for polishing the side wall surface of the through hole and the side wall surface of the object to be punched.
- the second conventional device A press processing device (hereinafter referred to as "the second conventional device") has been proposed.
- the second conventional apparatus is provided with three processing units (first, second, and third processing units), and each of the cover units is provided with a punch and a die.
- first processing unit in the same manner as the first processing unit of the first conventional apparatus, a half-blanked portion is formed at a portion of the plate material to be punched and removed.
- second processing unit a hole (blank hole) is formed in the plate member by punching out the half-blanked portion as a punched body in substantially the same manner as the second processing unit of the first conventional apparatus described above. It has become.
- the blank hole is formed so that its diameter is slightly smaller than the diameter of the through hole finally formed in the plate material.
- the punch having a blank having a diameter substantially the same as the diameter of the through hole is pushed into the part where the through hole is formed (the peripheral part of the blank hole) in the plate material.
- the side wall surface of the hole is to be shaved.
- the plate material becomes a punched product in which a through hole having a sheared side wall surface is formed!
- the process of forming the half-blanked portion in the plate material, the process of forming the blank hole in the plate material, and the process of applying shaving force on the side wall surface of the blank hole The steps are performed sequentially. Therefore, the number of steps required to form through-holes having sheared side wall surfaces in the plate material is the first conventional apparatus and third step in which the first and second steps are performed. There was no change from the case of the press processing method using a separate device in which) is additionally performed. Further, in the second conventional apparatus, the third side of the side wall surface of the blank hole is subjected to shaving (third step). There is a problem that the apparatus configuration becomes larger than that of the first conventional apparatus by the amount of further providing the processing unit.
- Patent Document 1 Japanese Patent Application Laid-Open No. 9-174492 (FIG. 2, FIG. 3)
- Patent Document 2 Japanese Patent Application Laid-Open No. 2004-176853 (claim 1, FIG. 1)
- the present invention has been made in view of such circumstances.
- the purpose is to suppress the increase in size of the apparatus itself and the increase in the number of steps for punching the plate material, and at the site where the plate to be stamped is punched or the force to be stamped on the plate material. It is an object of the present invention to provide a pressing device, a pressing method, and a stamped product capable of forming at least a part of a punching surface along a punching direction to be sheared and suppressing generation of burrs on a plate material. .
- a pressing apparatus of the present invention is a pressing apparatus for punching a plate material, having a first upper die and a first lower die, and a first upper die and a first die. At least one of the lower molds is vertically movable relative to the other, and one of the first punch and the first die facing each other is fixed to the first upper mold, and (1) Either the first punch or the first die is attached and fixed to the lower die, and a negative clearance is set between the first punch and the first die when viewed from a downward direction.
- a first processing unit that performs half-blanking processing on the plate material by relatively moving the first punch and the first die in the vertical direction, a second upper die and a second lower die, and a second upper die and At least one of the second lower molds is vertically movable relative to the other, and the second One of a second punch and a second die having a male-female relationship is attached and fixed to the mold, and the other of the second punch and the second die is attached to the second lower mold.
- the second punch may be vertically aligned with the second punch.
- the cross-sectional shape in the case of cutting in the orthogonal direction is configured to be a shape in which the cross-sectional shape in the case of cutting the first punch in the direction orthogonal to the vertical direction is expanded in a similar manner.
- the pressing apparatus is a pressing apparatus for punching a plate material, including a first upper die and a first lower die, and at least one of the first upper die and the first lower die is the other.
- the first upper die is movable relative to the other, and one of the opposing first punch and first die is attached and fixed to the first upper die, and the first lower die is provided with the first lower die.
- the other one of the first punch and the first die is attached and fixed, and a negative clearance is set between the first punch and the first die when viewed from the up and down direction.
- a first processing unit that performs half blanking on the plate material by relatively moving the first die in the upper and lower directions, a second upper die and a second lower die, and a second upper die and a second lower die.
- the second die includes a second processing unit that performs a shaving process on a part.
- the second die has a cross-sectional shape when the second die is cut in a direction perpendicular to the vertical direction, and the first die is cut in a direction orthogonal to the vertical direction.
- Distance dimension is 0. Olmn! It is configured to have a distance dimension of ⁇ 0.3 mm.
- the first processing unit when the first processing unit causes the first punch to approach relatively to the first die, 10% to 50% of the thickness dimension of the plate material It is configured and approached to a position separated by the distance dimension.
- the first punch is formed such that the width dimension of the negative clearance is 1% to 15% of the thickness dimension of the plate material. .
- the second punch is formed so that the width dimension of the positive clearance is 0.3% to 8% of the width dimension of the plate material. ing. [0020]
- at least one of the edge portion of the first punch on the side facing the plate material and the inner edge of the first die on the side facing the plate material Chamfered to have a curved surface.
- At least one of the end edge of the first punch on the side facing the plate and the inner edge of the first die on the side facing the plate are formed.
- the curved surface is formed in an arc shape having a radius of curvature equal to or less than the length dimension of 7.5% in the thickness dimension of the plate when the first punch and the first die are cut in the vertical direction. Ru.
- the curved surface of the edge portion on the side facing the plate material in the second punch is the thickness dimension of the plate material when the second punch is cut in the vertical direction. It is formed in an arc shape having a radius of curvature equal to or less than the 5% length dimension.
- the punched product of the present invention is manufactured by punching a material to be punched out of a plate material by the press working apparatus having the above-mentioned configuration.
- the pressing method of the present invention is a pressing method in which a plate material is subjected to a punching process, using a first punch and a first die having a male-female relationship, in a portion of the plate material to be punched.
- a second step of shaving at least a part of the punching surface along the punching direction at the portion where the punching body is punched.
- FIG. 1 is a schematic front view of a pressing apparatus according to a first embodiment.
- FIG. 3 A schematic cross-sectional view showing how the first punch abuts on the plate material in the first processing unit
- FIG. 5 A schematic cross-sectional view showing how the first punch is closest to the first die in the first processing unit.
- FIG. 6 is a schematic cross-sectional view showing a part of a second processing unit in the first embodiment.
- FIG. 7 A schematic cross-sectional view showing a state in which the stroke movement of the second punch to the second die side is started in the second processing unit.
- FIG. 8 A schematic cross-sectional view showing how a second punch presses a half-blanked portion of a plate material in a second processing unit.
- FIG. 9 A schematic cross-sectional view showing a state where shaving force to a portion to be a side wall surface of the through hole is started in the second door unit.
- FIG. 10 A schematic cross-sectional view showing how a shaving force is applied to a portion to be a side wall surface of the through hole in the second caul unit and it is crawled.
- FIG. 11 A schematic cross-sectional view showing a state in which a plate member also has a punched body punched out in the second processing unit.
- FIG. 12 A schematic cross-sectional view showing a state in which the second step by the second processing unit is finished.
- FIG. 13 is a schematic cross-sectional view showing a part of a first processing unit in the second embodiment.
- FIG. 15 is a schematic cross-sectional view showing how the second punch moves the second punch toward the second die in the second casing unit.
- FIG. 16 is a schematic cross-sectional view showing how the second punch presses the half-blanked portion of the plate material in the second processing unit.
- FIG. 6 is a schematic cross-sectional view showing how the data has been started.
- FIG. 18 A schematic cross-sectional view showing that a portion to be a side wall surface of a to-be-punched body in the second caul unit is provided with shaving kale and sprinkled.
- FIG. 19 A schematic cross-sectional view showing a state in which a plate-like member is also punched out in the second processing unit.
- FIG. 20 is a schematic cross-sectional view showing a state in which a plate-like member is also punched out in the second processing unit in the third embodiment.
- FIG. 21 is a schematic view of another example showing the cross-sectional shape of the first punch and the cross-sectional shape of the second punch.
- FIG. 22 is a plan view of a carrier formed by further processing a plate material pressed by a press device according to the first embodiment.
- FIG. 23 A sectional view taken along line 23-23 in FIG.
- FIG. 24 is a plan view of a backing plate formed by processing a plate material after press cutting with a press opening device according to the second embodiment.
- FIG. 25 (a) A schematic cross-sectional view showing a state in which a half cutting process is performed on a portion of the plate material where the notch portion is formed; (b) a schematic cross section showing a state where the notch portion is formed The figure (c) is a schematic plan view which shows a mode that the notch part was formed in the board
- the half-cut portion 15 formed in the first processing unit 13 is punched out as a body to be punched 15A (see FIG. 11).
- a through hole P is formed at a portion where the object to be punched 15A is punched out.
- the through hole P is sheared (shearing) so that the side wall surface (punching surface along the punching direction) Pa is not a rough fracture surface but a shear surface.
- a stamped product is formed.
- the “half-blanking process” stops the blanking in the middle and It is to form a cutout 15).
- a lower die (first lower die) 16 is disposed on the base plate 12, and a first punch 17 is attached and fixed on the lower die 16.
- a plurality of (four) column-like columns 18 are erected on the base plate 12 so as to extend vertically through the four corners of the lower mold 16, and the lower mold 16 is arranged along each column 18. It is designed to move up and down.
- a drive source for example, a stroke source for moving the lower mold 16 (and the first punch 17) between the bottom dead center position and the top dead center position in the first processing unit 13
- An actuator that can also be used as a hydraulic cylinder (fluid pressure cylinder) is provided.
- an upper die (first upper die) 19 is supported by the upper region of the lower die 16 via each column 18, and on the lower surface side of the upper die 19.
- a first die 20 corresponding to the first punch 17 is fixedly attached.
- the upper surface Wa of the plate material W is the lower surface 20 a of the first die 20.
- a plate material pressing portion (not shown) is provided to push the plate material W upward so as to abut on the plate.
- a first die hole (insertion hole) 21 having a substantially circular cross section corresponding to the cross sectional shape (hole shape) of the through hole P is formed.
- the first die hole 21 is set such that its diameter D1 (eg, 29.9 mm) is slightly shorter than the diameter dl of the through hole P.
- D1 eg, 29.9 mm
- the inner edge 20b on the lower surface 20a side is processed to have a curved surface having a so-called rounded shape.
- the curved surface 17c of the edge portion 17b of the first punch 17 in the present embodiment has a length dimension of 5% in the thickness dimension d (for example, 4 mm) of the plate material W when the first punch 17 is cut in the vertical direction. It is formed in the shape of a circular arc having a radius of curvature (eg 0.2 mm).
- “clearance” means a gap formed between the punch (first punch 17) and the die hole (first die hole 21) when viewed from the vertical direction, and the clearance (clearance C 1 If the) is “negative alignment”, the diameter of the punch (first punch 17) (diameter D2) must be larger than the diameter of the die hole (first die 21) (diameter D1) Is shown. That is, “negative clearance is formed” means that the punch overlaps with the portion of the die around the die hole when viewed from the vertical direction, and between the punch and the die hole when viewed from the vertical direction. Does not mean that a gap actually occurs. On the other hand, the clearance is "positive clearance” If the diameter of the punch is smaller than the diameter of the die hole! / Scold.
- the plate member pressing portion lifts the plate member W upward (a 1) Push up to the die 20 side, and bring the upper surface Wa of the plate material W into contact with the lower surface 20a of the first die 20. Then, the first punch 17 strokes upward from the bottom dead center position based on the drive of the hydraulic cylinder. Then, as shown in FIG. 3, the upper surface of the first punch 17 (opposite surface facing the plate material W) 17a abuts on the lower surface Wb of the plate material W, and the first punch 17 points upward at the abutted portion. Press. As a result, as shown in FIG.
- the plate member W is formed with a half-blanked portion 15 projecting toward the first die 20 side (upper side).
- the first punch 17 and the first die 20 are relatively moved in the vertical direction, whereby a half punching process is performed on a portion to be punched in the plate material W.
- the first punch 17 stops its upward movement. At this time, the first punch 17 approaches the position where the upper surface 17a is separated from the lower surface 20a of the first die 20 by a distance dimension d2 of 35% in the thickness dimension d of the plate material W. Then, the first punch 17 moves to the bottom dead center position (see FIG. 2) and stops its movement. That is, the first step S1 in the first processing unit 13 is completed. Thereafter, the pushing-up of the plate material W by the plate material pressing portion is stopped, and the plate material W is separated from the first die 20. Then, the plate material W is sequentially fed from the first processing unit 13 to the inside of the second processing unit 14.
- a portion where the end edge portion 17b of the first punch 17 abuts on the way to stroke movement to the top dead center position (hereinafter referred to as , "The first side wall surface 15sh of the half-blanked portion 15" . Because the shaving is performed by the first die 20,;) is formed like a sheared surface.
- a lower die (second lower die) 22 is disposed on the base plate 12, and a second die 23 is attached and fixed on the lower die 22.
- the second die 23 is formed with a second die hole (insertion hole) 24 having a substantially circular cross section corresponding to the cross sectional shape (hole shape) of the through hole P.
- the second die hole 24 is set such that its diameter D4 (for example, 30.9 mm) is slightly larger than the diameter dl of the through hole P.
- Columnar columns 18 are erected at four corners on the lower mold 22, and an upper mold (second upper mold) 25 is supported vertically movable in the upper region of the lower mold 22 via each column 18. ing.
- a drive source for causing the second processing unit 14 to move the upper mold 25 (and the second punch 26) between the top dead center position and the bottom dead center position.
- an actuator consisting of a hydraulic cylinder (fluid pressure cylinder) or the like
- a hydraulic cylinder fluid pressure cylinder
- a second punch 26 having a male-female relationship with the second die 23 is fixedly attached. That is, in the press processing apparatus 11 of the present embodiment, since the first punch 17 is attached and fixed to the lower mold 16 by the first processing unit 13, the second punch 26 is the upper mold in the second cover unit 14. It is attached and fixed to 25.
- the second punch 26 is formed to have a substantially cylindrical shape corresponding to the cross-sectional shape (hole shape) of the through hole P, and the diameter dimension D3 (for example, 30.7 mm) is the first diameter.
- the diameter of the punch 17 is set to be, for example, 0.6 mm larger than the diameter dimension D2.
- the second punch 26 has a diameter D3 smaller than a diameter D4 of the second die hole 24 in the second die 23 and the through hole P.
- the second die 23 is formed such that the clearance C2 has a width dimension (for example, 0.1 mm) of 2.5% in the thickness dimension d (for example, 4 mm) of the plate material W.
- the edge 26b on the lower surface 26a side (the side facing the plate material W) of the second punch 26 is subjected to a force so as to form a so-called rounded surface. ,.
- the second step S2 is started. That is, as shown in FIG. 7, the second punch 26 travels downward toward the plate material W (half-blanked portion 15) and pushes the half-blanked portion 15 of the plate W downward. Then, the lower end side portion (hereinafter referred to as “the second side wall surface 15sb of the half-blanked portion 15”) at the connection portion between the half-blanked portion 15 and the plate member W is formed in a fractured surface.
- the half-blanked portion 15 is pushed further downward by the second punch 26, as shown in FIG. 8, the first side wall surface 15sh and the second sidewall surface 15sb of the half-blanked portion 15 are separated. As a result, the half-blanked portion 15 is cut from the plate material W.
- the second punch 26 further pushes the half-blanked portion 15 downward, and starts to shear the plate W. That is, the second punch 26 punches the half punched portion 15 out of the plate material W, and starts shaving against the side wall surface Pa of the through hole P formed by punching the half punched portion 15. Then, as shown in FIG. 10, the side wall surface Pa of the through hole P is gradually subjected to a shearing process as the further downward stroke movement of the second punch 26 is made.
- the half-blanked portion 15 is still in the state of being fitted in the through hole P of the plate material W. Furthermore, shaving force to the side wall surface Pa by the second punch 26 is performed. As shown in FIG. 11, the half-blanked portion 15 is pushed out of the through hole P by the second punch 26, and becomes the object to be punched 15A. In addition, since the residue (shaving dust) generated by the shaving eye to the side wall surface Pa by the second punch 26 adheres to the object to be punched 15A, the side wall surface 15a is formed in a fractured surface shape. .
- the second punch 26 moves until the lower surface 26 a thereof is lower than the upper surface 23 a of the second die 23. Even if it does not exist, the above-mentioned object to be punched 15A is punched from the plate material W. Thereafter, when the second punch 26 stops the downward stroke movement and subsequently starts the upward stroke movement, the punching of the body to be punched 15A from the plate material W is completed. And, as shown in FIG. 12, the side wall surface Pa of the through hole P is formed in a sheared cross-sectional shape by a shaving eyelet by the second punch 26.
- the clearance C1 between the first punch 17 and the first die 20 (the first die hole 21) is set to be a positive clearance
- the first punch 17 and the first punch 17 are Since a tensile stress acts on the portion sandwiched by the second die 20, when the plate material W is pressed upward by the first punch 17 in the first processing unit 13, the pressed portion is broken and the plate material W There is a possibility that a broken cross section may be formed.
- the clearance C1 is a negative clearance
- a compressive stress acts on a portion of the plate material W sandwiched by the first punch 17 and the second die 20, so that the fracture is suppressed.
- the formation of a fracture surface on the plate material W can be suppressed in the 1 processing unit 13.
- the second punch 26 applies a shaving force to the side wall Pa of the through hole P formed when the half-blanked portion 15 is punched out from the plate material W as the object to be punched 15A. It is getting better. Moreover, since the clearance C2 between the second punch 26 and the second die 23 is a positive clearance, the contact between the second punch 26 and the second die 23 can be avoided. Therefore, the side wall surface Pa of the through hole P formed in the plate material W can be formed into a sheared surface shape while suppressing an increase in size of the apparatus itself and an increase in the number of steps for punching the plate material W. It is possible to suppress the occurrence of burrs on W.
- the distance dimension d2 between the upper surface 17a of the first punch 17 and the lower surface 20a of the first die 20 is smaller than the 10% distance dimension in the thickness dimension d of the plate W.
- the thickness of the connection portion between the plate W and the half-blanked region 15 is the actual implementation. It becomes thicker than the case of form.
- the load applied to the second punch 26 is increased when punching the half-blanked portion 15 and shaving force of the side wall surface Pa of the through hole P are performed.
- the distance dimension d2 is set to 35% of the thickness dimension d of the plate material W, it is suppressed that the half-blanked portion 15 is cut from the plate material W in the first step S1. While being able to do this, the load on the second punch 26 can be favorably reduced in the second step S2.
- the clearance (the negative clearance width dimension) C1 is set to be smaller than the 1% width dimension in the thickness dimension d of the plate material W, the first step SI of the plate material W There is a possibility that the sag Wc formed on the lower surface Wb side becomes too large. That is, even when the object to be punched 15A is punched from the plate material W in the second step S2, there is a possibility that a part of the wedge Wc remains in the plate material W.
- the clearance C1 is set to be larger than the width dimension of 15% in the thickness dimension d of the plate material W, when the first punch 17 presses the plate material W upward, The load based on the first punch 17 and the first die 20 increases the load.
- the life of the first punch 17 and the first die 20 may be shortened.
- the clearance C1 is the thickness dimension d of the plate material W. Since the width dimension of 2.5% in the above is set, the life extension of the first punch 17 and the first die 20 can be favorably achieved, and in the second step S2, the plate members W to be punched 15 When A is punched out, it is possible to suppress that a part of the gauze Wc remains on the plate material W.
- the clearance (the width dimension of the positive clearance) C2 is set to be smaller than the 0.3% width dimension of the thickness dimension d of the plate W, the second punch 26 is There was a possibility that the load applied to the second punch 26 and the second die 23 might be increased when the half-blanked portion 15 is punched from the plate material W. That is, there was a possibility that the life of the second punch 26 and the second die 23 could be shortened.
- the clearance C2 is set to be larger than the width dimension of 8% in the thickness dimension d of the plate material W, the plate material W is punched by the second punch 26 when the plate material W is punched. There was a possibility that a "flash" might occur.
- the difference between the diameter D3 of the second punch 26 and the diameter D2 of the first punch 17 is set to be shorter than 0.02 mm, the following problems occur. is there. That is, in the second step S2, the width dimension of the connection portion connecting the half-blanked portion 15 and the plate member W becomes too short compared to the case of the present embodiment (so-called width of shaving allowance becomes too narrow). There is a possibility that the shaving force may be applied to the side wall surface Pa of the through hole P. On the other hand, if the difference between the diameter D3 of the second punch 26 and the diameter D2 of the first punch 17 is set to be longer than 0.6 mm, the following problems occur.
- the first punch 17 moves the plate material W upward by stroke (toward the first die 20). In this case, the load on the first punch 17 can be favorably reduced. Further, since the first punch 17 is formed into a so-called blunt blade shape by being subjected to the arc-shaped chamfering process, the first punch 17 in the plate material W is formed in the first step S1. It is possible to suppress cutting of the pressed part.
- the curved surface 17c of the edge portion 17b of the first punch 17 cuts the first punch 17 in the vertical direction, the length dimension of 7.5% in the thickness dimension d of the plate material W Assuming that it is formed in an arc shape having a radius of curvature larger than the radius of curvature of the following, there are the following defects. That is, when the plate material W is subjected to half-blanking in the first step S1, the sag Wc formed on the plate material W may be too large.
- the edge portion 17 b of the first punch 17 is formed so as to have a radius of curvature of 5% in the thickness dimension d of the plate material W, and thus the edge 17 b of the first punch 17 is formed in the plate material W It is possible to well suppress that the droop Wc becomes too large.
- each processing unit is somewhat different from the first embodiment. Therefore, in the following description, portions different from the first embodiment will be mainly described, and the same or corresponding members as in the first embodiment are denoted by the same reference numerals, and redundant description will be omitted. It shall be.
- a first die hole 21 having a substantially circular cross section is formed in the first die 20, and a negative clearance C1 between the first die 20 and the first punch 17 is small.
- the width dimension (for example, 0.15 mm) in the thickness dimension d (for example, 4 mm) of the plate material W is set. That is, the first die hole 21 of the first die 20 is set such that its diameter D1 is, for example, 29.7 mm.
- the inner edge portion 20b of the first die 20 on the lower surface 20a side (the side facing the plate material W) is processed to have a curved surface 20c having a so-called rounded shape.
- the plate material pressing portion pushes the plate material W upward (toward the first die 20), and the upper surface Wa of the plate material W Abut the lower surface 20 a of the first die 20. Then, the first punch 17 strokes upward from the bottom dead center position based on the drive of the hydraulic cylinder. Then, the upper surface of the first punch 17 (opposite surface facing the plate material W) 17a abuts on the lower surface Wb of the plate material W, and the first punch 17 presses the portion where the plate abuts upward.
- a half-blanked portion 15 having a protruding shape is formed toward the first die 20 side (upper side).
- a half punching force is applied to the portion of the plate material W where the workpiece 15A is punched out.
- the first punch 17 When the first punch 17 travels to the top dead center position, it stops moving upward. At this time, the first punch 17 approaches the position where the upper surface 17a is separated from the lower surface 20a of the first die 20 by a distance dimension of 45% in the thickness dimension d of the plate material W. Then, the first punch 17 moves to the bottom dead center position and stops its movement. That is, the first step S1 in the first processing unit 13 is completed. Ru. Thereafter, the push-up of the plate material W by the plate material pressing portion is stopped, and the plate material W is separated from the first die 20. Then, the plate material W is sequentially fed from the first processing unit 13 to the inside of the second processing unit 14.
- a second die 23 is attached and fixed to the second mold unit 14 on the lower mold 22, and a second punch having a male-female relationship with the second die 23 on the lower surface side of the upper mold 25. 26 is attached and fixed.
- the second die 23 is formed with a second die hole 24 having a substantially circular cross section, and the diameter of the second die hole 24 is D4 (for example, 29.3 mm). Is set to be larger by, for example, 0.4 mm than the diameter dimension D1 of the first die hole 21 in the first die 20.
- the second die hole 24 has a diameter D4 slightly smaller than the diameter dl of the through hole P and has substantially the same dimensions as a diameter d3 (see FIG. 19) of a workpiece 15A described later.
- the second die 23 is formed such that the clearance C2 has a width dimension (for example, 0.1 mm) of 2.5% in the thickness dimension d (for example, 4 mm) of the plate material W.
- the second side wall surface 15sb of the half-blanked portion 15 is formed in the shape of a broken surface as in the case of the first embodiment. Then, when the half punched portion 15 is further pushed downward by the second punch 26, as shown in FIG. 16, the first side wall surface 15sh and the second sidewall surface 15sb in the half punched portion 15 are connected. As a result, the half-blanked portion 15 is in a state where the plate material W is cut off.
- the second die 23 is on the side of the half-blanked portion 15 (the portion to be the punched object 15A).
- Wall (punched surface) 1 Start to shear 5a. That is, the second die 23 punches the half punched portion 15 pressed downward by the second punch 26 from the plate material W and starts a cutting force on the side wall surface 15 a of the half punched portion 15. Then, as shown in FIG. 18, along with the further downward stroke movement of the second punch 26, the side wall surface 15a of the half-blanked portion 15 is gradually subjected to shaving processing.
- the half-blanked portion 15 is still in the state of being fitted in the through hole P of the plate material W.
- the shaving force to the side wall surface Pa by the second die 23 is further performed, as shown in FIG. 19, the half-blanked portion 15 is pushed out of the through hole P by the second punch 26.
- the plate member W is punched out to form a punched body 15A, and most of the side wall surface 15a of the punched body 15A is formed into a sheared surface shape by a shaving die by the second die 23. Ru.
- the half punched portion 15 (the body to be punched 15A) is finally pressed from the plate material W by the pressure from the second punch 26 other than the portion formed in a sheared surface. It is a section cut into two and is formed in a fractured surface.
- the side wall surface Pa is formed in a broken surface shape.
- the clearance C1 between the first punch 17 and the first die 20 (first die hole 21) is set to be a positive clearance, the first punch 17 and the first punch 17 are Since a tensile stress acts on the portion sandwiched by the second die 20, when the plate material W is pressed upward by the first punch 17 in the first processing unit 13, the pressed portion is broken and the plate material W is broken. There is a possibility that a fractured surface is formed.
- the clearance C1 is a negative clearance, a compressive stress is exerted on a portion of the plate material W sandwiched by the first punch 17 and the second die 20, so that the fracture is suppressed. The formation of a fracture surface on the plate material W by the processing unit 13 can be suppressed.
- a half-cut portion 15 is formed in a portion (a portion to be punched out) in the plate material W where the through hole P is formed, and in the second processing unit 14, the half-cut portion It is designed to punch around 15. Therefore, the shaving waste generated when shaving force is applied to the side wall surface 15a of the punching object 15A in the second processing unit 14 is adhered to the plate material W not used as a product. It is possible to prevent the shaving debris from adhering to the second punch 26.
- the clearance (the width dimension of the positive clearance) C2 is set to be smaller than the width dimension of 0.3% in the thickness dimension d of the plate W, the second punch 26 is obtained. Therefore, there is a possibility that the load force applied to the second punch 26 and the second die 23 may increase when the half-blanked portion 15 is punched from the plate material W. That is, there was a possibility that the life of the second punch 26 and the second die 23 could be shortened.
- the difference between the diameter D4 of the second die hole 24 in the second die 23 and the diameter D1 of the first die hole 21 in the first die 20 is set to be larger than 0.6 mm.
- the inner edge portion of the second die 23 is compared with the case of the present embodiment.
- the inner peripheral side portion of the half-blanked portion 15 formed in the first step S1 is sheared, and the load applied to the second die 23 is increased.
- the curved surface 20c of the inner edge portion 20b of the first die 20 cuts the first die 20 in the vertical direction, the length dimension of 7.5% in the thickness dimension d of the plate material W If it is formed in an arc shape having a radius of curvature larger than the radius of curvature of the following, the following problems occur. That is, when the sheet material W is subjected to half-blanking processing in the first step S1, there is a possibility that the sag formed on the upper side of the sheet material W becomes too large.
- the edge portion 17 b of the first punch 17 is formed so that the curved surface 17 c has a radius of curvature of 7.5% in the thickness dimension d of the plate material W, it is formed in the plate material W Who is done Wc is large It is possible to well suppress excessive noise.
- each processing unit is slightly different from the first embodiment. Therefore, in the following description, portions different from the first embodiment will be mainly described, and the same or corresponding members as or to those of the first embodiment are denoted by the same reference numerals and the duplicate description will be omitted. It shall be.
- the press machine apparatus 11 of the present embodiment includes a first processing unit 13 and a second process unit 14 and has a plate material W made of metal material having a predetermined thickness (for example, 3 mm) (for example, an automobile A through hole P having a predetermined shape (in the present embodiment, a substantially circular shape in cross section) is formed in the hot-rolled steel sheet for structure (CFIS SAPH 370)).
- the first punch 17 is attached and fixed on the lower die 16, and the first die 20 corresponding to the first punch 17 is attached and fixed on the lower surface side of the upper die 19.
- the first punch 17 is formed to have a substantially cylindrical shape, and is formed to have a diameter D2 of 20.2 mm, for example.
- the plate material pressing portion pushes the plate material W upward (toward the first die 20), and the upper surface Wa of the plate material W Abut the lower surface 20 a of the first die 20.
- the first punch 17 strokes upward from the bottom dead center position based on the drive of the hydraulic cylinder.
- plate material W In this case, a half-blanked portion 15 is formed to project toward the first die 20 side (upward).
- the first punch 17 and the first die 20 are relatively moved in the vertical direction, whereby a half punching process is performed on the portion of the plate material W where the object to be punched 15A is punched out.
- the portion of the plate material W in contact with the end edge portion 17b of the first punch 17 is formed into a sheared surface as a result of the shaving force being applied by the first punch 17.
- the first punch 17 When the first punch 17 travels to the top dead center position, it stops moving upward. At this time, the first punch 17 approaches the position where the upper surface 17a is separated from the lower surface 20a of the first die 20 by the distance dimension of 33% in the thickness dimension d of the plate material W. Then, the first punch 17 moves to the bottom dead center position and stops its movement. That is, the first step S1 in the first processing unit 13 is completed. Thereafter, the push-up of the plate material W by the plate material pressing portion is stopped, and the plate material W is separated from the first die 20. Then, the plate material W is sequentially fed from the first processing unit 13 to the inside of the second processing unit 14.
- a second die 23 is attached and fixed to the second mold unit 14 on the lower mold 22 thereof, and a second punch having a male-female relationship with the second die 23 on the lower surface side of the upper mold 25. 26 is attached and fixed.
- the second die 23 is formed with a second die hole 24 having a substantially circular cross section, and the second die hole 24 has a diameter D4 (eg, 20.5 mm) of the first die 20.
- the diameter of the first die hole 21 is set to be, for example, 0.3 mm larger than the diameter dimension D1.
- the second step S2 is started. That is, the second punch 26 moves downward toward the plate W (half-blanked portion 15) and pushes the half-blanked portion 15 of the plate W downward. Then, the second side wall surface 15sb of the half-blanked portion 15 is formed in the shape of a broken surface.
- the second punch 26 when the second punch 26 further pushes the half-blanked portion 15 downward, the second punch 26 starts shaving on the side wall surface Pa of the through hole P.
- the diameter D3 of the second punch 26 is smaller than the diameter D3 of the first punch 17 by 0.1 mm. Therefore, as shown in FIG. 20, the portion sheared by the second punch 26 (upper portion in FIG. 20) P1 has a diameter (for example, 20.1 mm) that is sheared by the first punch 17 (see FIG. 20). At 20, it is formed to be smaller than the diameter (for example, 20.2 mm) of the lower part P2). Therefore, in the through hole P formed in the plate material W by the press tool device 11 of the present embodiment, the upper side portion P1 and the lower side portion P2 having a diameter larger than the diameter of the upper side portion P1 are formed. Ru.
- the difference between the diameter D3 of the second punch 26 and the diameter D1 of the first die hole 21 in the first die 20 is set to be smaller than 0.02 mm.
- the width dimension of the connection portion connecting the half-blanked portion 15 and the plate member W becomes too small compared to the case of the present embodiment (so-called width of shaving allowance becomes too narrow)
- the side wall surface Pa of the upper portion PI of the through hole P may be subjected to shaving care.
- the difference between the diameter D3 of the second punch 26 and the diameter D1 of the first die hole 21 in the first die 20 is set to be larger than 0.6 mm, the following There is something like that.
- the second punch 26 and the second die 23 punch out the punched body 15A from the plate material W in the second step S2, the load applied to the edge portion 26b of the second punch 26 becomes large.
- the second punch 26 is formed so that the difference between its diameter D3 and the diameter D1 of the first die hole 21 in the first die 20 is 0.5 mm. Therefore, the width of the so-called shaving allowance can be favorably secured in the second step S2, and the life of the second punch 26 can be further lengthened.
- the edge 17 b of the first punch 17 has a radius of curvature equal to or less than the radius of curvature of 7.5% in the thickness dimension d of the plate W. If there is, it may be formed to have an arbitrary radius of curvature (for example, a radius of curvature of 1.5% in the thickness dimension d).
- the inner edge portion 20b of the first die 20 has an arbitrary diameter dimension not greater than the diameter dimension of 15.0% in the thickness dimension d of the plate member W (for example, the inner diameter portion 20b) , Thickness dimension 10% diameter dimension of d) is formed to make a part of a circular shape,!
- the edge 26 b of the second punch 26 has an arbitrary diameter dimension not greater than the diameter dimension of 15.0% in the thickness dimension d of the plate material W in the longitudinal cross-sectional shape thereof (for example, 5% of the thickness dimension d It is shaped to make a part of the circular shape of the diameter dimension), even though.
- the inner edge 20b of the first die 20 has a radius of curvature equal to or less than the radius of curvature of 7.5% in the thickness dimension d of the plate W. If there is, it may be formed to have an arbitrary radius of curvature (for example, a radius of curvature of 6% in the thickness dimension d).
- the end edge 17b of the first punch 17 has an arbitrary diameter dimension not greater than the diameter dimension of 15.0% in the thickness dimension d of the plate material W in the longitudinal cross-sectional shape (eg, , And may be formed to be a part of a circular shape having a diameter dimension of 5% of the thickness dimension d. Further, the end edge portion 26 b of the second punch 26 has a vertical cross-sectional shape corresponding to the thickness dimension d of the plate material W. 15. It may be formed to be part of a circular shape of any diameter dimension (for example, 5% diameter dimension of thickness dimension d) less than 0% diameter dimension.
- the end edge 17b of the first punch 17 has an arbitrary diameter dimension not greater than the diameter dimension of 15.0% in the thickness dimension d of the plate material W in its longitudinal cross-sectional shape (for example, , And may be formed to be a part of a circular shape having a diameter dimension of 5% of the thickness dimension d.
- the inner edge 20b of the first die 20 has an arbitrary diameter dimension not greater than the diameter dimension of 15.0% (for example, 10% of the thickness dimension d in the thickness dimension d of the plate material W) It may be formed to be a part of a circular shape of diameter dimension).
- the edge portion 26b of the second punch 26 has an arbitrary diameter dimension whose vertical cross-sectional shape is equal to or less than the diameter dimension of 15.0% in the thickness dimension d of the plate material W (for example, the diameter dimension of 5% of the thickness dimension d It may be formed so as to make a part of the circular shape of. Furthermore, the edge portion 26b of the second punch 26 has an arbitrary diameter dimension not greater than the diameter dimension of 15.0% in the thickness dimension d of the plate material W (for example, 5% of the thickness dimension d). It may be formed to be a part of a circular shape of diameter dimension!
- the difference between the diameter dimension D3 of the second punch 26 and the diameter dimension D2 of the first punch 17 is within the range of 0.02 mm to 0.6 mm
- the difference between the diameter dimension D3 and the diameter dimension D2 may be formed to be an arbitrary diameter dimension (for example, 0.1 mm).
- the first punch 17 and the second punch 26 are cross sections of the through holes P which are formed in the plate material W in the cross section when being cut in the direction perpendicular to the vertical direction.
- the shape may be configured to have an arbitrary cross-sectional shape (for example, a cross-sectional polygonal shape).
- the cross-sectional shape of the second punch 26 be a shape in which the cross-sectional shape of the first punch 17 is substantially similar.
- the pressing device 11 of the first embodiment is not limited to the other processing devices (for example, the respective punches 17, 26 and the respective dies 20, 23). It may be for forming the carrier 40 together with a press tool having punches and dies of different sizes and shapes.
- the carrier 40 is a type of press-formed component of an automatic transmission.
- the first punch 17 and the second punch 26 have through-holes P formed in the plate material W in the cross-sectional shapes when cut in the direction orthogonal to the vertical direction.
- each cross-sectional shape eg, cross-sectional polygonal shape
- the pressing apparatus 11 of the second embodiment is for forming a backing plate 36 in which a plurality of protrusions 35 are formed on the outer surface (side wall surface 15 A) side. It may be In this case, it is desirable that the second die 23 be a shape in which the hole shape of the second die hole 24 is substantially similar to the hole shape of the first die hole 21 in the first die 20.
- the first punch 17 and the second punch 26 are through holes formed in the plate material W to have respective cross-sectional shapes when cut in the direction orthogonal to the upper and lower direction.
- the cross-sectional shape (hole shape) of P it may be configured to have an arbitrary cross-sectional shape (for example, a cross-sectional polygonal shape).
- the cross-sectional shape of the second punch 26 be a shape in which the hole shape of the first die hole 21 in the first die 20 is substantially similar.
- the second punch 26 may have any width dimension as long as the clearance C2 is within the range of 0.3% to 8% of the width dimension in the thickness dimension d of the plate material W (for example, Thickness Only 1% of the width in d) is formed to be!,!
- the first punch 17 may have any width dimension (eg, the thickness dimension if the clearance C1 is within the range of 1% to 15% of the thickness dimension d of the plate material W). It may be formed to have a width dimension of 3.0% in d).
- the distance dimension between the inner peripheral portion of the cross section of the second die 23 and the inner peripheral portion of the cross section of the first die 20 is 0.10 mm in the second embodiment. It may be configured to have an arbitrary distance dimension (for example, 3 mm) within the range of 0.3 mm. In such a configuration, in the second processing unit 14, the second die 23 shears only a part of the side wall surface 15a of the object to be punched 15A. That is, in the object to be punched 15A, a large diameter portion having a large diameter dimension and a diameter dimension force smaller than the large diameter portion are continuously provided in the vertical direction.
- the distance between the upper surface 17a of the first punch 17 and the lower surface 20a of the first die 20 when the plate material W is subjected to half-blanking in the first processing unit 13 may be set to be an arbitrary distance dimension within the range of a distance dimension of 10% to 50% in the thickness dimension d.
- the distance dimension d2 may be set to be 40% of the thickness dimension d!
- the first punch 17 is attached and fixed to the lower surface side of the upper die 19 in the first processing die 13, and the second punch 26 is second It may be configured to be attached and fixed to the upper surface side of the lower mold 22 in the mechanical unit 14.
- the first step S1 as shown in FIG. 25 (a), a half-blanked portion 32 protruding downward from the plate member 30 is formed.
- the first punch 17 is a first processing tool.
- the second punch 26 may be attached and fixed to the lower surface side of the upper die 19 of the second mold 13 while being attached and fixed to the lower surface side of the upper die 19 in the guide 13.
- the plate member 30 on which the half-blanked portion 32 is formed in the first step S1 of the first processing unit 13 is inverted so that the convex portion of the half-blanked portion 32 faces upward, (2) It may be carried in to processing unit 14!
- the pressing device 11 may be specifically configured to form any molded part as long as it is a molded part of an automatic transmission.
- the present invention may be embodied in the form of an element of a belt for a continuously variable transmission. That is, any molded part may be formed as long as the part is not a thin plate and has a relatively thick plate.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112006000245T DE112006000245T5 (de) | 2005-01-25 | 2006-01-25 | Stanzvorrichtung, Stanzverfahren und Stanzprodukt |
| CN200680003115XA CN101107086B (zh) | 2005-01-25 | 2006-01-25 | 压力加工装置、压力加工方法以及冲切产品 |
| JP2007500547A JPWO2006080356A1 (ja) | 2005-01-25 | 2006-01-25 | プレス加工装置、プレス加工方法、及び打抜き加工品 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-017152 | 2005-01-25 | ||
| JP2005017152 | 2005-01-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006080356A1 true WO2006080356A1 (ja) | 2006-08-03 |
Family
ID=36740386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/301152 Ceased WO2006080356A1 (ja) | 2005-01-25 | 2006-01-25 | プレス加工装置、プレス加工方法、及び打抜き加工品 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20080098788A1 (ja) |
| JP (1) | JPWO2006080356A1 (ja) |
| CN (1) | CN101107086B (ja) |
| DE (1) | DE112006000245T5 (ja) |
| WO (1) | WO2006080356A1 (ja) |
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| CN102189170A (zh) * | 2011-02-23 | 2011-09-21 | 吴江市变压器厂有限公司 | 一种巻铁芯夹件缺口冲裁模 |
| CN104226796A (zh) * | 2013-06-17 | 2014-12-24 | 成都宏明双新科技股份有限公司 | 一种微小柱体零件加工工艺及其加工装置 |
| JP2016096689A (ja) * | 2014-11-17 | 2016-05-26 | 株式会社三井ハイテック | 積層鉄心の製造方法 |
| EP3603839B1 (en) * | 2017-03-27 | 2025-01-08 | Nippon Steel Corporation | Shearing method, shearing device, and shearing facility |
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| EP2198988B1 (de) * | 2008-12-22 | 2013-02-27 | TRUMPF Werkzeugmaschinen GmbH + Co. KG | Verfahren zum mehrstufigen Stanzen |
| SE533539C2 (sv) * | 2009-04-06 | 2010-10-19 | Gestamp Hardtech Ab | Förfarande för bearbetning av en formad produkt samt användning av förfarandet |
| DE102010028280B4 (de) * | 2010-04-28 | 2020-11-12 | Zf Friedrichshafen Ag | Verfahren zur Herstellung von Stanzteilen sowie Vorrichtung und Verwendung |
| CN102485369B (zh) * | 2010-12-02 | 2014-02-05 | 孙昌清 | 确保冲压件精度的加工方法 |
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| CN102527815A (zh) * | 2011-12-31 | 2012-07-04 | 苏州三维精密机械有限公司 | 精修边连续冲压工艺 |
| CN103785732B (zh) * | 2012-10-31 | 2016-01-13 | 英业达科技有限公司 | 板金件的冲压方法 |
| JP6046468B2 (ja) * | 2012-11-29 | 2016-12-14 | 株式会社三井ハイテック | 打ち抜き製品のシェービング加工方法、製造方法および製造装置 |
| JP6071049B2 (ja) * | 2013-01-28 | 2017-02-01 | 永光精器株式会社 | プレス加工方法 |
| JP5954371B2 (ja) * | 2014-08-05 | 2016-07-20 | 三菱マテリアル株式会社 | パワーモジュール用基板及びその製造方法 |
| CN104148504B (zh) * | 2014-08-19 | 2016-06-29 | 陈吉艳 | 一种无毛刺冲压的方法 |
| DE102014115727B3 (de) * | 2014-10-29 | 2016-04-21 | Hugo Benzing Gmbh & Co. Kg | Verfahren zum Herstellen eines Spannrings |
| JP5958565B2 (ja) * | 2015-01-14 | 2016-08-02 | Jfeスチール株式会社 | 打抜き加工方法、打抜き加工装置、および積層鉄心の製造方法 |
| CN107249774B (zh) * | 2015-02-25 | 2019-09-24 | 日本制铁株式会社 | 剪切加工方法 |
| EP3088096B1 (de) | 2015-04-29 | 2021-07-07 | TRUMPF Werkzeugmaschinen GmbH + Co. KG | Vorrichtungen und verfahren zum druckumformen von verbindungsstegen zwischen werkstückteilen eines plattenartigen werkstücks |
| DE102016125510B3 (de) * | 2016-12-22 | 2018-04-12 | Benteler Automobiltechnik Gmbh | Warmgeformtes metallisches Blechbauteil sowie Verfahren zur Herstellung einer Öffnung in einem solchen Blechbauteil |
| CN106903216A (zh) * | 2017-04-10 | 2017-06-30 | 上海五星铜业股份有限公司 | 一种金属材料无卷边的分离方法 |
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| CN113275444A (zh) * | 2021-05-21 | 2021-08-20 | 成都宏明双新科技股份有限公司 | 一种半剪切成型过程中防产品掉落的模具及其成型方法 |
| CN118144046B (zh) * | 2024-03-19 | 2024-11-26 | 珠海紫翔自动化技术有限公司 | 凹模、模具组件及凹模的制备方法 |
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| CN104226796A (zh) * | 2013-06-17 | 2014-12-24 | 成都宏明双新科技股份有限公司 | 一种微小柱体零件加工工艺及其加工装置 |
| CN104226796B (zh) * | 2013-06-17 | 2016-01-06 | 成都宏明双新科技股份有限公司 | 一种微小柱体零件加工工艺及其加工装置 |
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| EP3603839B1 (en) * | 2017-03-27 | 2025-01-08 | Nippon Steel Corporation | Shearing method, shearing device, and shearing facility |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112006000245T5 (de) | 2007-12-13 |
| CN101107086A (zh) | 2008-01-16 |
| CN101107086B (zh) | 2011-01-19 |
| JPWO2006080356A1 (ja) | 2008-08-07 |
| US20080098788A1 (en) | 2008-05-01 |
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