WO2006075660A1 - ダイクッション装置 - Google Patents
ダイクッション装置 Download PDFInfo
- Publication number
- WO2006075660A1 WO2006075660A1 PCT/JP2006/300290 JP2006300290W WO2006075660A1 WO 2006075660 A1 WO2006075660 A1 WO 2006075660A1 JP 2006300290 W JP2006300290 W JP 2006300290W WO 2006075660 A1 WO2006075660 A1 WO 2006075660A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pad
- die cushion
- small
- cushion device
- large pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/02—Die-cushions
-
- 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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
- B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
- B30B15/026—Mounting of dies, platens or press rams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S100/00—Presses
- Y10S100/918—Bolster and die
Definitions
- the present invention relates to a die cushion device including a die cushion pad.
- a die cushion device when a workpiece is drawn by a press machine, a die cushion device is used.
- a die cushion device includes a die cushion pad that supports a blank holder via a cushion pin, and the die cushion pad force is lowered following the movement of the slide to which the upper die is attached.
- the die cushion pad is divided into a plurality of knot members, and each pad member is individually driven by a servo motor as a biasing force generating means to adjust the cushion force for each pad member.
- a servo motor as a biasing force generating means to adjust the cushion force for each pad member.
- Patent Document 1 JP-A-6-543
- the die cushion pad is divided into a plurality of pad members while pressing, it is possible to draw during drawing! In addition, since a falling moment of a different size is generated for each pad member between the point of action of the pad member and the reaction point at the center of the pad member, each pad member is swollen and smooth. There was a limit to performing high-precision press molding because it could not be lowered
- a main object of the present invention is to provide a die cushion device that can smoothly lower the die cushion pad and can realize press molding with higher accuracy.
- a die cushion device is a die cushion device provided in a press machine.
- the die cushion device includes a plurality of small pads that receive a sliding pressing force via cushion pins, and a large pad that supports the plurality of small pads.
- the upward biasing force is generated against the pressing force.
- the acting force acting on each of the small pads is equalized by the provision of the large pad, for example, during draw forming, so that the overturning moments generated by the acting force are mutually reduced. It cancels out and becomes small, and the stagnation of the small pad can be suppressed. Therefore, the die cushion pad can be lowered smoothly and smoothly, for example, with a good bolster on the cushion pin abutting against the small pad, and high-precision press molding can be realized.
- the small pad is integrally fixed to the large pad! /.
- each small pad is fixed to the large pad by a fastening member such as a bolt, equalization of the acting force on the small pad by the large pad can be surely promoted. It is effective.
- the die cushion device of the present invention it is preferable that only the large pad moves up and down while being guided by the inner wall of the bed of the press machine.
- the present invention since only the large pad that hardly deforms is guided and moved up and down by the inner wall of the bed, the small pad that is slightly deformed by the overturning moment is moved up and down without contacting the inner wall of the bed.
- the reaction force that receives the inner wall force of the bed can be stabilized. Therefore, when the die cushion pad is lowered in synchronization with the movement of the slide, the influence of the reaction force on the cushion pressure can be reduced, and the biasing force generating means can be easily controlled.
- a total of four small pads are arranged in two rows and two columns, and one large pad is provided so as to support these four small pads. Desirable.
- the acting force of the small pads can be made equal between the front, rear, left and right small pads, the overturning moment generated in each small pad can be canceled and brought close to zero. It is effective.
- FIG. 1 is a schematic diagram showing an overall outline of a press machine employing a die cushion device according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view showing a main part of the press machine.
- FIG. 3 is an enlarged view showing a main part of the bed of the press machine.
- FIG. 4 is a perspective view showing a die cushion pad of the die cushion device.
- FIG. 5 is an enlarged view showing biasing force generating means of the die cushion device.
- FIG. 6 is a diagram for explaining the operational effect of the embodiment.
- FIG. 7 is a view showing a modification of the present invention.
- FIG. 8 is a perspective view showing a die cushion pad used in the modified example.
- FIG. 1 is a schematic view showing an overall outline of a press machine 1 in which the die cushion device 10 of the present embodiment is adopted
- FIG. 2 is an exploded perspective view showing the main part of the press machine 1
- FIG. It is an enlarged view which shows the principal part of the bed 6.
- the press machine 1 is connected to a crown 2 having a built-in driving force transmission mechanism such as a crank mechanism, an eccentric mechanism, or a link mechanism, and a driving force transmission mechanism in the crown 2 via a plunger 3.
- a driving force transmission mechanism such as a crank mechanism, an eccentric mechanism, or a link mechanism
- a driving force transmission mechanism such as a crank mechanism, an eccentric mechanism, or a link mechanism
- the slide 4 to which the upper die 80 is attached, the bed 6 on which the moving bolster 5 to which the lower die 90 is attached, and the bed 6 and the crown 2 are connected (four in FIG. 1).
- the die cushion device 10 is accommodated in the bed 6.
- the mover bolster 5 of the present embodiment includes a platen-shaped bolster 51 having a large number of through holes 51 A, and a carrier 52 that supports the bolster 51. It consists of
- the through hole 51A of the bolster 51 is a hole through which the cushion pin 12 (FIG. 1) used in the die cushion device 10 passes, and is appropriately selected according to the lower mold 90 used. Close A moving means (not shown) is provided in the keyer 52, and the bolster 51 can be moved to the outside of the press machine 1 for changing the mold.
- the carrier 52 is provided with an internal space 53.
- the bed 6 is provided with a cross-shaped rib 62 so that the internal space 61 is divided into four in a plan view.
- the rib 62 is provided in the middle of the internal space 61 in the vertical direction.
- the lower end of the rib 62 is not provided down to the bottom portion.
- the die cushion device 10 includes a blank holder 11 that holds the workpiece W between the upper die 80 and a blank holder 11 that supports the blank holder 11 via cushion pins 12.
- Cushion pad 13 and urging force generating means 14 for raising and lowering the die cushion pad 13 while generating an upward urging force.
- the urging force generating means may be one that raises and lowers the dichroic pad passively with respect to the movement of the slide, such as an air cylinder type that utilizes air compressibility, and a servo that, as in this embodiment.
- Some motors 24 (Fig. 5) actively drive the die cushion pad up and down in synchronization with the movement of the slide.
- the die cushion pad 13 occupies the small space 63 partitioned by the rib 62 in the internal space 61 of the bed 6. It consists of four small pads 15 that move up and down and one large pad 16 located below the small pads 15 arranged in two rows and two columns. In other words, the large pad 16 moves up and down below the rib 62 in the internal space 61, and does not interfere with the rib 62! /.
- the small pad 15 is made of a metal and has a hollow rectangular box shape.
- the small pad 15 is dropped into the small space 63 from above the rib 62 with respect to the large pad 16 previously disposed below the rib 62. It is positioned on the large pad 16 while being guided by 17 etc., and is fixed together by bolts not shown.
- One large pad 16 is also made of a metal and has a hollow rectangular box shape, and a guide plate 18 is provided on a side surface of the four circumferences.
- the guide plate 18 faces the guide plate 64 provided on the inner wall of the inner space 61 of the bed 6 shown in FIG. 3, and guides the elevation of the dichroic pad 13 while sliding in contact with each other. That is, the die cushion pad 13 moves up and down At this time, only the large pad 16 comes into contact with the inner wall of the bed 6 through the guide plates 18 and 64, and the small pad 15 does not come into contact.
- the urging force generation means 14 constituting the die cushion device 10 is screwed into the nut portion 19 and a nut portion 19 provided on the lower surface of the large node 16.
- the servo motor 24 is supported by a suitable part such as a floor 65, and a belt 25 is wound around each pulley 22, 23. Yes.
- each urging force generating means 14 are provided corresponding to each small pad 15, and the rotation of each servo motor 24 is individually controlled by the controller.
- the rotating shaft rotates forward and backward by supplying current.
- the driving pulley 23, the driven pulley 22, and the ball screw portion 20 rotate.
- the nut portion 19 moves linearly in the up-and-down direction.
- the die cushion pad 13 moves up and down together with the nut portion 19. Control of the cushion pressure (biasing force) applied to the die cushion pad 13 is performed by current control to the servo motor 24.
- the die cushion pad 13 is divided into a plurality of small pads 15 and large pads 16, as schematically shown in FIG.
- the load acting on the action point P can be equalized by the large pad 16, and the overturning moment M generated between the action point P and the reaction point C, which is the center of the small pad 15, can be canceled.
- FIG. 6 only the through-hole 51A used is shown.
- each small pad 15 is arranged.
- the overturning moment M generated in step 1 can be canceled with certainty, and if the large pad 16 is used, the overturning moment can be brought closer to the opening, which is more effective.
- the small pad 15, which is easy to squeeze, does not contact the inner wall of the bed 6 or the rib 62 and does not receive the reaction force. Therefore, a stable cushion pressure can be applied to the die cushion pad 13, and the urging force Control of the generating means 14 can be facilitated.
- the cross-shaped rib 62 provided in the bed 6 has a lower end side that is not provided with a force in the middle of the internal space 61 in the vertical direction.
- a rib portion 62A along the side may be provided to hang down to the floor portion 65 of the bed 6.
- the large pads 16 of the die cushion pad 13 have a capacity of approximately 1Z2 as compared with that described in the above embodiment, and a pair is arranged so as not to interfere with the ribs 62. Will be. Even in such a die cushion pad 13, each large pad 16 is still supported by a plurality of small pads 15 (two in this case), and thus is included in the present invention.
- the rib portion on the long side extending on the short side of the rib 62 extends to the floor portion 65.
- the cross-shaped rib 62 is provided on the bed 6, but the shape of the rib may be a single character.
- the pair of small pads 15 are disposed on the large pad 16 having the capacity described in the above embodiment.
- the small pad 15 in this case has a capacity approximately twice that of the one described in the embodiment.
- the rib 62 of the bed 6 and the rib of the carrier 52 as described in the above embodiment may be provided according to the stagnation of the bolster 51 as needed. It is provided as appropriate.
- the small pad 15 and the large pad 16 are bolted together, but the small pad 15 is indirectly biased above the large pad 16 by using some biasing means. You may leave it.
- a driving means for the small pad 15 may be provided separately and may be driven up and down separately from the large pad 16.
- the driving means may be accommodated inside the large pad 16, for example.
- the controller also controls the up / down movement of the small pad 15 and the up / down movement of the large pad 16 by the controller. It is controlled.
- the die cushion pad 13 is driven by the servo motor 24.
- the configuration of the urging force generating means that can be driven by the hydraulic actuator, the pneumatic actuator, or the linear motor is arbitrary. It is. Also, as mentioned above, it may be an air cylinder type that uses the compressibility of air.
- the number of urging force generating means 14 is arbitrary and need not be the same as the number of small pads 15.
- the present invention can be used in any press machine provided with a die cushion device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Presses And Accessory Devices Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/794,965 US8166791B2 (en) | 2005-01-14 | 2006-01-12 | Die cushion device |
| DE112006000206T DE112006000206B4 (de) | 2005-01-14 | 2006-01-12 | Ziehkissenvorrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005007800A JP4704047B2 (ja) | 2005-01-14 | 2005-01-14 | ダイクッション装置 |
| JP2005-007800 | 2005-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006075660A1 true WO2006075660A1 (ja) | 2006-07-20 |
Family
ID=36677685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/300290 Ceased WO2006075660A1 (ja) | 2005-01-14 | 2006-01-12 | ダイクッション装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8166791B2 (ja) |
| JP (1) | JP4704047B2 (ja) |
| CN (1) | CN100509374C (ja) |
| DE (1) | DE112006000206B4 (ja) |
| WO (1) | WO2006075660A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032172A1 (en) * | 2006-09-13 | 2008-03-20 | Toyota Jidosha Kabushiki Kaisha | Press machine and manufacturing method using the same |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4833531B2 (ja) * | 2003-11-11 | 2011-12-07 | 新日本製鐵株式会社 | プレス成形加工装置、プレス成形加工方法、コンピュータプログラム及び記録媒体 |
| DE102006014454B3 (de) * | 2006-03-29 | 2007-11-08 | Hoffmann, Frank | Stanzvorrichtung mit Zuführeinrichtung |
| DE102010006120B4 (de) | 2010-01-29 | 2013-04-11 | Schuler Pressen Gmbh & Co. Kg | Presse mit Servo-Zieheinrichtung und Gelenkantrieb |
| CN101947866B (zh) * | 2010-09-18 | 2012-02-29 | 无锡市拓发自控设备有限公司 | 行程可调多级缓冲气垫 |
| JP6059291B2 (ja) | 2015-06-03 | 2017-01-11 | アイダエンジニアリング株式会社 | プレス機械のダイクッション装置 |
| JP6227702B2 (ja) * | 2016-04-22 | 2017-11-08 | アイダエンジニアリング株式会社 | ダイクッション装置のシム調整装置及び方法 |
| CN109049823B (zh) * | 2018-08-01 | 2020-07-24 | 江铃汽车股份有限公司 | 防偏载装置及含有该防偏载装置的压机设备 |
| JP7527745B2 (ja) | 2021-10-07 | 2024-08-05 | 株式会社エイチアンドエフ | スライド構造体及びそれを備えるプレス機械 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100552A (ja) * | 1993-10-05 | 1995-04-18 | Komatsu Ltd | プレスのダイクッション装置 |
| JPH10166072A (ja) * | 1996-12-09 | 1998-06-23 | Kanto Auto Works Ltd | プレス加工装置のダイクッション |
| JPH10263898A (ja) * | 1997-03-27 | 1998-10-06 | Toyota Motor Corp | プレス機械 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2233164A (en) * | 1938-06-13 | 1941-02-25 | Rudolph W Glasner | Press |
| DE3915795C1 (ja) * | 1989-05-13 | 1991-01-31 | Maschinenfabrik Mueller-Weingarten Ag, 7987 Weingarten, De | |
| EP0453955B1 (de) * | 1990-04-23 | 1994-03-23 | Maschinenfabrik Müller-Weingarten AG | Zieheinrichtung in einer Presse zum Ziehen von Blechformteilen |
| DE4143683B4 (de) | 1991-01-06 | 2006-03-09 | Dieffenbacher Gmbh + Co. Kg | Hydroelastische Tiefzieheinrichtung |
| IT1254188B (it) * | 1991-02-12 | 1995-09-14 | Dispositivo di imbutitura idroelastico | |
| DE4292190T1 (de) * | 1991-07-01 | 1994-06-09 | Komatsu Mfg Co Ltd | Ziehkissen-Vorrichtung für Presse |
| JP3211904B2 (ja) | 1992-06-15 | 2001-09-25 | 株式会社小松製作所 | プレスのncサーボダイクッション装置 |
| JPH057945A (ja) | 1991-07-01 | 1993-01-19 | Komatsu Ltd | プレスのダイクツシヨン装置 |
| JP3241803B2 (ja) * | 1992-06-15 | 2001-12-25 | 株式会社小松製作所 | プレスのncサーボダイクッション装置 |
| EP0675419B1 (en) * | 1994-03-31 | 1999-05-26 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for optimizing press operating condition based on press operating environment and/or physical condition of blank |
| JPH07266099A (ja) * | 1994-03-31 | 1995-10-17 | Toyota Motor Corp | プレス加工条件設定方法および装置 |
| JPH10202327A (ja) | 1997-01-22 | 1998-08-04 | Aida Eng Ltd | プレス機械のダイクッション制御装置 |
| JP5050238B2 (ja) | 2004-06-14 | 2012-10-17 | 株式会社小松製作所 | ダイクッション制御装置及びダイクッション制御方法 |
| JP4516785B2 (ja) | 2004-06-18 | 2010-08-04 | 株式会社小松製作所 | ダイクッション装置 |
-
2005
- 2005-01-14 JP JP2005007800A patent/JP4704047B2/ja not_active Expired - Lifetime
-
2006
- 2006-01-12 DE DE112006000206T patent/DE112006000206B4/de not_active Expired - Lifetime
- 2006-01-12 CN CNB2006800019001A patent/CN100509374C/zh not_active Expired - Lifetime
- 2006-01-12 WO PCT/JP2006/300290 patent/WO2006075660A1/ja not_active Ceased
- 2006-01-12 US US11/794,965 patent/US8166791B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07100552A (ja) * | 1993-10-05 | 1995-04-18 | Komatsu Ltd | プレスのダイクッション装置 |
| JPH10166072A (ja) * | 1996-12-09 | 1998-06-23 | Kanto Auto Works Ltd | プレス加工装置のダイクッション |
| JPH10263898A (ja) * | 1997-03-27 | 1998-10-06 | Toyota Motor Corp | プレス機械 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008032172A1 (en) * | 2006-09-13 | 2008-03-20 | Toyota Jidosha Kabushiki Kaisha | Press machine and manufacturing method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100509374C (zh) | 2009-07-08 |
| US20080127838A1 (en) | 2008-06-05 |
| DE112006000206B4 (de) | 2010-11-04 |
| DE112006000206T5 (de) | 2007-11-29 |
| JP4704047B2 (ja) | 2011-06-15 |
| US8166791B2 (en) | 2012-05-01 |
| JP2006192481A (ja) | 2006-07-27 |
| CN101102886A (zh) | 2008-01-09 |
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