CN102527759A - Hole flanging method and die for forming high flange on thin plate - Google Patents

Hole flanging method and die for forming high flange on thin plate Download PDF

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Publication number
CN102527759A
CN102527759A CN2010105996720A CN201010599672A CN102527759A CN 102527759 A CN102527759 A CN 102527759A CN 2010105996720 A CN2010105996720 A CN 2010105996720A CN 201010599672 A CN201010599672 A CN 201010599672A CN 102527759 A CN102527759 A CN 102527759A
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CN
China
Prior art keywords
hole
hole flanging
flanging
mould
taper
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.)
Pending
Application number
CN2010105996720A
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Chinese (zh)
Inventor
张文兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN YIHE MOLD MANUFACTURING CO LTD
Original Assignee
SHENZHEN YIHE MOLD MANUFACTURING CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHENZHEN YIHE MOLD MANUFACTURING CO LTD filed Critical SHENZHEN YIHE MOLD MANUFACTURING CO LTD
Priority to CN2010105996720A priority Critical patent/CN102527759A/en
Publication of CN102527759A publication Critical patent/CN102527759A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a hole flanging method and dies for forming a high flange on a thin plate. The hole flanging method comprises the following steps of: extruding a taper hole, flanging the hole reversely and setting molding, namely extruding the taper hole which does not pierce a sheet metal, flanging the taper hole reversely, and drawing to form a high flange which is subjected to the hole flanging. According to the dies for forming the high flange on the thin plate, hole prepressing and hole flanging can be performed by using two sets of dies, and disposable hole prepressing and hole flanging also can be performed by using a set of dies. According to the hole flanging method and the dies, scrap materials are avoided, the height of the flange formed by the hole flanging is high, and the extruded taper hole can prevent materials from cracking during post-hole flanging, so that a pointed sharp corner is not formed at the margin of the flange which is subjected to the hole flanging, and potential safety hazards are avoided; a production mode is flexible, namely the flange can be formed by two-time hole flanging and also can be formed directly by one-time hole flanging; and the dies for the process have a simple structure, so that the improvement of the machining efficiency is facilitated.

Description

The hole flanging method and the mould of the high flange of moulding on the thin plate
[technical field]
The present invention relates to the processing of a kind of hole flanging, particularly a kind of on thin plate the hole flanging method and the mould of the high flange of moulding.
[background technology]
In the punching press industry, on sheet metal, carry out hole flanging processing through regular meeting, hole flanging processing is meant and utilizes mould to translate into the processing method for stamping of flange (setting straight flange) to the peritreme on the plate, hole flanging is mainly used on sheet metal holding screw and is riveted together two sheet metals.Existing hole flanging adds two kinds of processes of work point: a kind of is the hole flanging of moulding at twice, it earlier with the pre-punched hole mould in advance towards aperture, carry out hole flanging with the hole flanging mould again; Another kind is the disposable hole flanging of direct bursting plate.Before a kind of hole flanging method be on sheet metal, to dash an aperture in advance; And then hole flanging again on next station; This is the most frequently used process, but the hole flanging flange height of this processes has certain limitation, because pre-punched hole can wash out the part material; Reduced so be used for pushing the material of hole flanging, thereby influenced the flange height that hole flanging forms.When the thinner thickness of sheet metal material, the straight height degree of hole flanging flange can receive than limitations.Though can be through reducing the aperture of pre-punched hole, reach the purpose that increases the flange height behind the hole flanging, too small punching needle very easily fractures when thrusting plate, is unfavorable for batch process; And less towards the waste material of aperture generation in advance, jump out die face easily, cause sheet metal to damage by pressure.And the method for second kind of direct disposable hole flanging owing to be direct tear panel gold copper-base alloy, will be high protruding injustice so rout up the hole flanging flange that comes, and have very sharp keen wedge angle on the limit, hurt sb.'s feelings in use and handling process thorn easily, so use not too extensive.
[summary of the invention]
The objective of the invention is to: improve above-mentioned deficiency of the prior art, the hole flanging method of the high flange of moulding on a kind of thin plate is provided, can form the hole flanging of high flange through this kind hole flanging method, and flange does not have wedge angle.
Technical scheme of the present invention is achieved in that it may further comprise the steps:
A, extruding taper hole: on the sheet metal mother metal, squeeze out the taper hole that does not pierce through the sheet metal mother metal;
B, reverse hole flanging: from the back side of sheet metal mother metal in the vertex of a cone corresponding position impact extrusion hole flanging of taper hole; The extruding taper hole is in the opposite direction in the direction of hole flanging and the steps A; Taper hole squeezed from the vertex of a cone wear into through hole; Through hole directly enlarges the metal material of pushing around the taper hole and digs the formation flange, and the perisporium of taper hole extends and is configured as the annular end face of flange;
C, moulding setting: pull and stretch flange to setting height forms high flange;
In the hole flanging method of the high flange of moulding, the degree of depth of taper hole is identical with the thickness of sheet metal mother metal on the above-mentioned thin plate;
In the hole flanging method of the high flange of moulding, steps A is accomplished by squeezing the taper hole mould in advance on the above-mentioned thin plate, and step B, C are accomplished by the hole flanging mould;
On the above-mentioned thin plate in the hole flanging method of the high flange of moulding, steps A is accomplished by same set of mould to step C.
Realize the employed mould of the high flange hole flanging of moulding method on the above-mentioned thin plate, comprise the hole flanging mould, the hole flanging mould is built-in with the hole flanging punching pin, it is characterized in that: it also comprises squeezes the taper hole mould in advance, squeezes the extruding punching pin that is provided with the band taper in the taper hole mould in advance; Be provided with push rod and push rod spring in the hole flanging mould, an end of push rod is connected with push rod spring, and the other end and hole flanging punching pin offset;
In the above-mentioned mould; The said taper hole mould that squeezes in advance comprises clamping plate, takes off material spring, cope match-plate pattern, extruding punching pin and lower bolster; Take off material spring rebound clip plate and cope match-plate pattern; The extruding punching pin is arranged in clamping plate and the cope match-plate pattern, and the taper of extruding punching pin is towards lower bolster, on lower bolster, is the plane with pushing the corresponding position of punching pin;
In the above-mentioned mould; Said hole flanging mould comprises clamping plate, cope match-plate pattern, push rod spring, push rod, lower bolster, hole flanging punching pin and takes off the material spring; Be provided with the hole flanging shaped hole in the cope match-plate pattern; One end of push rod is connected with push rod spring, and the other end overhangs in the hole flanging shaped hole and can connect with the hole flanging punching pin, and the end that dangles of push rod is planar structure.
The employed mould of the high flange of moulding on the above-mentioned thin plate of another kind of realization; Comprise upper die and lower die; Counterdie is built-in with the hole flanging punching pin; It is characterized in that: patrix is built-in with extruding punching pin and punching pin spring, and the upper end of extruding punching pin is fixedly connected with the punching pin spring, and the end that dangles of extruding punching pin connects with the hole flanging punching pin; The extruding punching pin is that the end place of dangling is provided with the push rod of taper, and the vertex of a cone of taper is towards the hole flanging punching pin, and the axis of the axis of taper and hole flanging punching pin coincides;
In the above-mentioned mould, said patrix comprises clamping plate and the cope match-plate pattern that is provided with shaped hole, and push rod overhangs in the shaped hole; Counterdie comprises lower bolster, and lower bolster is arranged with and takes off the material spring.
Technology than existing hole flanging moulding; Beneficial effect of the present invention is: do not need in advance that stamping-out goes out through hole on sheet metal, thus do not exist towards the little frangible of pin diameter and waste material is less jumps out the problem that die face causes sheet metal to damage by pressure easily, and do not have waste material and produce; The material that can be used for pushing hole flanging does not reduce; The flange height of hole flanging moulding is very high, and simultaneously, the taper hole that squeezes out can prevent in the back material breaks during hole flanging; Make the limit of hole flanging flange can not form very sharp keen wedge angle, avoided the generation of potential safety hazard; The mode of production is flexible, can be refined as twice hole flanging moulding, also can a direct hole flanging moulding, and the mould structure of technology is simple, is beneficial to the raising working (machining) efficiency.
[description of drawings]
Fig. 1 is the structural representation that on the sheet metal mother metal, squeezes out taper hole among the present invention
Fig. 2 is the structural representation of the high flange of moulding on the thin plate
Fig. 3 squeezes the sketch map that the taper hole mould squeezes out taper hole in advance in twice hole flanging moulding
Fig. 4 be in twice hole flanging moulding the hole flanging mould to the hole flanging sketch map of sheet metal mother metal
Fig. 5 is a mould structure sketch map of realizing direct disposable hole flanging of the present invention
Among the figure: 1, sheet metal mother metal; 2, taper hole; 3, accumulation area; 4, flange; 5, clamping plate; 6, cope match-plate pattern; 7, shaped hole; 8, lower bolster; 9, take off the material spring; 10, push rod; 11, push rod spring; 12, hole flanging punching pin; 13, punching pin spring; 14, extruding punching pin; 15, taper.
[specific embodiment]
Describe the present invention below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2; Hole flanging method of the present invention does not have waste material and produces, and the flange 4 straight height degree that its hole flanging forms are very high, and the limit of flange 4 can not produce sharp keen wedge angle; This method comprises the steps: A, extruding taper hole: on sheet metal mother metal 1, vertically squeeze out taper hole 2; In the extrusion process, along with the expansion gradually of taper hole 2, the metal material generation plastic deformation that is extruded the position flows to taper hole 2 and forms accumulation area 3 all around; The taper hole 2 that final extruding forms is advisable not pierce through sheet metal mother metal 1, to avoid the generation of waste material; B, reverse hole flanging: from the back side of sheet metal mother metal 1 in the vertex of a cone corresponding position impact extrusion hole flanging of taper hole 2; Extruding taper hole 2 is in the opposite direction in the direction of hole flanging and the steps A; Taper hole 2 squeezed from the vertex of a cone wear the formation through hole; Through hole directly enlarges the metal material of pushing around the taper hole 2 (being the metal material of accumulation area) to be dug and forms flange 4, and the perisporium of taper hole 2 then extends and is configured as the annular end face of flange 4, has avoided the cracking in flange 4 limits; C, moulding setting: pull and stretch flange 4 to setting height forms the high flange of according with process requirements.In steps A, preferred, the degree of depth of taper hole 2 is identical with the thickness of sheet metal mother metal 1, material breaks when helping avoiding hole flanging.
Hole flanging method of the present invention can realize that a kind of is to be divided into hole flanging twice through dual mode, needs two molds to cooperate and accomplishes; Another kind is direct disposable hole flanging, as long as a mold just can be accomplished hole flanging.
Fig. 3 and shown in Figure 4 for being divided into the employed mould of hole flanging twice, it comprises squeezes taper hole mould and hole flanging mould in advance, and steps A is accomplished by squeezing the taper hole mould in advance, and step B, C are accomplished by the hole flanging mould.Referring to Fig. 3; Squeezing the taper hole mould in advance comprises mould bases, clamping plate 5, takes off material spring 9, cope match-plate pattern 6, extruding punching pin 14 and lower bolster 8; Take off material spring 9 connecting cleats 5 and cope match-plate pattern 6; Extruding punching pin 14 is arranged in clamping plate 5 and the cope match-plate pattern 6, and extruding punching pin 14 is provided with conical taper 15, and taper 15 is towards lower bolster 8.On lower bolster 8, be the plane with extruding punching pin 14 corresponding positions, in the time of can guaranteeing to push taper hole 2, sheet metal mother metal 1 be pierced.At first; Use in advance crowded taper hole mould to squeeze out taper hole 2 in advance, during work, the taper 15 of extruding punching pin 14 is needing the position of hole flanging to squeeze out taper hole 2 on sheet metal mother metal 1 under the effect of punch press; Take out the sheet metal mother metal 1 of band taper hole 2 subsequently, be positioned over again and carry out hole flanging processing in the hole flanging mould.Referring to Fig. 4; The hole flanging mould comprises mould bases, clamping plate 5, cope match-plate pattern 6, push rod 10, push rod spring 11, lower bolster 8, hole flanging punching pin 12 and takes off material spring 9; Be provided with shaped hole 7 in the cope match-plate pattern 6, an end of push rod 10 is connected with push rod spring 11, and the other end overhangs in the shaped hole 7; The end that dangles of push rod 10 is planar structure, and the end that dangles of push rod 10 connects with hole flanging punching pin 12 all the time in the hole flanging process.Before punching press began, hole flanging punching pin 12 contracted in lower bolster 8, cope match-plate pattern 6 descending sheet metal mother metal 1 of pushing down under the effect of punch press when punching press begins; Continue when descending, take off material spring 9 and be compressed and, sheet metal mother metal 1 tightly pushed down upwards to executing reaction force on the lower bolster 8; Punch press continues when descending again, and hole flanging punching pin 12 will stretch out from lower bolster 8 and the metal material of accumulation area 3 is clamp-oned in the shaped hole 7 of cope match-plate pattern 6, and hole flanging punching pin 12 becomes high flange with the metal material pull and stretch in the shaped hole 7.After moulding finished, the flange 4 of hole flanging was pushed out cope match-plate pattern 6 under the effect of push rod spring 11 and push rod 10.
Be illustrated in figure 5 as the employed mould of direct disposable hole flanging; This mould can disposable precompressed hole, the hole flanging moulding; The patrix of mould comprises clamping plate 5 and the cope match-plate pattern 6 that is provided with shaped hole 7, and patrix is built-in with the punching pin spring 13 of extruding punching pin 14 and high-tenacity, and the upper end of extruding punching pin 14 is fixedly connected with punching pin spring 13; Extruding punching pin 14 overhangs in the shaped hole 7, and the end that dangles of extruding punching pin 14 connects with placing the hole flanging punching pin 12 in the counterdie; Counterdie comprises lower bolster 8, and lower bolster 8 is arranged with and takes off material spring 9.Extruding punching pin 14 is that the end place of dangling is provided with the push rod of taper 15, and the vertex of a cone of taper 15 is towards hole flanging punching pin 12, and the axis of the axis of taper 15 and hole flanging punching pin 12 coincides.Extruding punching pin 14 ejected cope match-plate pattern 6 before punching press began under the effect of punching pin spring 13, and when patrix was descending, the taper 15 of extruding punching pin 14 thrust sheet metal mother metal 1 upper surface, extrusion molding taper hole 2 earlier; Patrix continues when descending; Hole flanging punching pin 12 stretches out from lower bolster 8 and clamp-ons in the sheet metal mother metal 1 that is squeezed into taper hole 1 and carry out hole flanging; At this moment, hole flanging punching pin 12 is clamp-oned the metal material of accumulation area 3 in the shaped hole 7 of cope match-plate pattern 6, and the metal material pull and stretch in the shaped hole 7 is become high flange.When punching course was accomplished, extruding punching pin 14 was held concurrently and is born the effect of push rod, and flange 4 is ejected from cope match-plate pattern 6.
In hole flanging processing of the present invention, can be downward extrusion modling taper hole 2 and flanging upward hole, also can be upwards extrusion modling taper hole 1 and hole flanging downwards, as long as the direction of the direction of extrusion modling taper hole 1 and hole flanging is in opposite directions.
Described above be merely preferred embodiment of the present invention, above-mentioned specific embodiment is not a limitation of the present invention.In technological thought category of the present invention, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, the scope that all belongs to the present invention and protected.

Claims (9)

1. the hole flanging method of the high flange of moulding on the thin plate, it is characterized in that: it may further comprise the steps:
A, extruding taper hole: on the sheet metal mother metal, squeeze out the taper hole that does not pierce through the sheet metal mother metal;
B, reverse hole flanging: from the back side of sheet metal mother metal in the vertex of a cone corresponding position impact extrusion hole flanging of taper hole; The extruding taper hole is in the opposite direction in the direction of hole flanging and the steps A; Taper hole squeezed from the vertex of a cone wear into through hole; Through hole directly enlarges the metal material of pushing around the taper hole and digs the formation flange, and the perisporium of taper hole extends and is configured as the annular end face of flange;
C, moulding setting: pull and stretch flange to setting height forms high flange.
2. the hole flanging method of the high flange of moulding on the thin plate according to claim 1 is characterized in that: the degree of depth of taper hole is identical with the thickness of sheet metal mother metal.
3. the hole flanging method of the high flange of moulding on the thin plate according to claim 1 is characterized in that: the employed mould of hole flanging method comprises in advance crowded taper hole mould and hole flanging mould, and steps A is accomplished by squeezing the taper hole mould in advance, and step B, C are accomplished by the hole flanging mould.
4. the hole flanging method of the high flange of moulding on the thin plate according to claim 1 is characterized in that: steps A is accomplished by same set of mould to step C.
5. the employed mould of the high flange of moulding on the said thin plate of claim 1, it comprises the hole flanging mould, the hole flanging mould is built-in with the hole flanging punching pin, it is characterized in that: it also comprises squeezes the taper hole mould in advance, squeezes the extruding punching pin that is provided with the band taper in the taper hole mould in advance; Be provided with push rod and push rod spring in the hole flanging mould, an end of push rod is connected with push rod spring, and the other end and hole flanging punching pin offset.
6. mould according to claim 5; It is characterized in that: squeeze the taper hole mould in advance and comprise clamping plate, take off material spring, cope match-plate pattern, extruding punching pin and lower bolster; Take off material spring rebound clip plate and cope match-plate pattern; The extruding punching pin is arranged in clamping plate and the cope match-plate pattern, and the taper of extruding punching pin is towards lower bolster, on lower bolster, is the plane with pushing the corresponding position of punching pin.
7. mould according to claim 5; It is characterized in that: the hole flanging mould comprises clamping plate, cope match-plate pattern, push rod spring, push rod, lower bolster, hole flanging punching pin and takes off the material spring; Be provided with the hole flanging shaped hole in the cope match-plate pattern; One end of push rod is connected with push rod spring, and the other end overhangs in the hole flanging shaped hole and can connect with the hole flanging punching pin, and the end that dangles of push rod is planar structure.
8. the employed mould of the high flange of moulding on the said thin plate of claim 1; It comprises upper die and lower die; Counterdie is built-in with the hole flanging punching pin; It is characterized in that: patrix is built-in with extruding punching pin and punching pin spring, and the upper end of extruding punching pin is fixedly connected with the punching pin spring, and the end that dangles of extruding punching pin connects with the hole flanging punching pin; The extruding punching pin is that the end place of dangling is provided with the push rod of taper, and the vertex of a cone of taper is towards the hole flanging punching pin, and the axis of the axis of taper and hole flanging punching pin coincides.
9. mould according to claim 8 is characterized in that: patrix comprises clamping plate and the cope match-plate pattern that is provided with shaped hole, and push rod overhangs in the shaped hole; Counterdie comprises lower bolster, and lower bolster is arranged with and takes off the material spring.
CN2010105996720A 2010-12-14 2010-12-14 Hole flanging method and die for forming high flange on thin plate Pending CN102527759A (en)

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CN2010105996720A CN102527759A (en) 2010-12-14 2010-12-14 Hole flanging method and die for forming high flange on thin plate

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773348A (en) * 2012-08-09 2012-11-14 昆山铂翔精密五金制品有限公司 Precise drawing die
CN104779737A (en) * 2013-12-23 2015-07-15 罗伯特·博世有限公司 Driving unit for servo driving apparatus of motor vehicle
CN105598280A (en) * 2015-12-25 2016-05-25 佛山市成阳正大模具五金塑料有限公司 High-precision flanging die for thick plate and flanging process
CN106391802A (en) * 2016-11-01 2017-02-15 苏州市瑞晟制冷设备有限公司 Burr-free edge turning device and a burr-free edge turning process
CN110049832A (en) * 2016-12-05 2019-07-23 标致雪铁龙汽车股份有限公司 For forming the press tool of flange by bending

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US6061909A (en) * 1993-07-06 2000-05-16 Ready Metal Manufacturing Co. Metal panel with flanged holes and process of fabrication
JP2003145222A (en) * 2001-11-14 2003-05-20 Kobe Steel Ltd Method for pressing aluminum alloy plate and aluminum alloy plate
JP2008073732A (en) * 2006-09-22 2008-04-03 Furaito:Kk Die for half-blanking/burring
CN101327504A (en) * 2008-07-31 2008-12-24 广州市华冠精冲零件有限公司 Technique for squeezing through-hole high dummy club on sheet
CN202028682U (en) * 2010-12-14 2011-11-09 深圳亿和模具制造有限公司 Burring hole forming die for high flange on sheet

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Publication number Priority date Publication date Assignee Title
SU1318330A1 (en) * 1985-04-08 1987-06-23 Камское объединение по производству большегрузных автомобилей Compound dies
US6061909A (en) * 1993-07-06 2000-05-16 Ready Metal Manufacturing Co. Metal panel with flanged holes and process of fabrication
JP2003145222A (en) * 2001-11-14 2003-05-20 Kobe Steel Ltd Method for pressing aluminum alloy plate and aluminum alloy plate
JP2008073732A (en) * 2006-09-22 2008-04-03 Furaito:Kk Die for half-blanking/burring
CN101327504A (en) * 2008-07-31 2008-12-24 广州市华冠精冲零件有限公司 Technique for squeezing through-hole high dummy club on sheet
CN202028682U (en) * 2010-12-14 2011-11-09 深圳亿和模具制造有限公司 Burring hole forming die for high flange on sheet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773348A (en) * 2012-08-09 2012-11-14 昆山铂翔精密五金制品有限公司 Precise drawing die
CN104779737A (en) * 2013-12-23 2015-07-15 罗伯特·博世有限公司 Driving unit for servo driving apparatus of motor vehicle
CN104779737B (en) * 2013-12-23 2020-05-12 罗伯特·博世有限公司 Drive unit for a servo drive in a motor vehicle
CN105598280A (en) * 2015-12-25 2016-05-25 佛山市成阳正大模具五金塑料有限公司 High-precision flanging die for thick plate and flanging process
CN106391802A (en) * 2016-11-01 2017-02-15 苏州市瑞晟制冷设备有限公司 Burr-free edge turning device and a burr-free edge turning process
CN106391802B (en) * 2016-11-01 2019-03-29 苏州市瑞晟制冷设备有限公司 A kind of impulse- free robustness hemmer and impulse- free robustness flanging process
CN110049832A (en) * 2016-12-05 2019-07-23 标致雪铁龙汽车股份有限公司 For forming the press tool of flange by bending

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