CN105598280A - High-precision flanging die for thick plate and flanging process - Google Patents

High-precision flanging die for thick plate and flanging process Download PDF

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Publication number
CN105598280A
CN105598280A CN201511008245.XA CN201511008245A CN105598280A CN 105598280 A CN105598280 A CN 105598280A CN 201511008245 A CN201511008245 A CN 201511008245A CN 105598280 A CN105598280 A CN 105598280A
Authority
CN
China
Prior art keywords
workpiece
flanging
drift
enlarged
die
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
CN201511008245.XA
Other languages
Chinese (zh)
Inventor
周冠华
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.)
Foshan Chengyang Zhengda Mould Hardware Plastic Co Ltd
Original Assignee
Foshan Chengyang Zhengda Mould Hardware Plastic 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 Foshan Chengyang Zhengda Mould Hardware Plastic Co Ltd filed Critical Foshan Chengyang Zhengda Mould Hardware Plastic Co Ltd
Priority to CN201511008245.XA priority Critical patent/CN105598280A/en
Publication of CN105598280A publication Critical patent/CN105598280A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00Flanging or other edge treatment, e.g. of tubes
    • B21D19/08Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/088Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/24Perforating, i.e. punching holes
    • B21D28/26Perforating, i.e. punching holes in sheets or flat parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides

Abstract

The invention discloses a high-precision flanging die for a thick plate and a flanging process. The high-precision flanging die comprises an integrally-assembled upper die; a punch is arranged on the upper die. The high-precision flanging die further comprises a reverse punch arranged above a workpiece and used for expanding the punched workpiece. The high-precision flanging die and the flanging process solve the problem that after the workpiece is punched by an existing punching process, hole edges easily rebound and collapse due to stress, so that the processing error is increased, and the tolerance requirements cannot be met.

Description

A kind of high accuracy flanging die and flanging process of using for slab
Technical field
The present invention relates to the Mould Machining field of metal plate punching part, in particular a kind of for slabWith high accuracy flanging die and flanging process.
Background technology
Existing stamping parts generally adopts vertical angle drift to carry out hole flanging processing, technical staff to workpieceRun into a problem: produced by internal stress effect by the workpiece hole portion edge after hole flanging anti-unavoidablelyBullet, edge produces angle of rebound to a certain degree to workpiece below, has had a strong impact on the working medium that adds of workpieceAmount. Dwindle in order to offset the aperture of causing that caves in, endoporus portion edge, technical staff tends in the time of punchingAperture drift is added to the larger surplus with the bounce-back of preformed hole portion, but this mode can make the accurate of punchingDegree is had a greatly reduced quality, and the degree of hole portion bounce-back is subject to being permitted multifactorial impact and is difficult to calculating, punchingGreat aperture is only this problem of suitable aperture and perplexs technical staff always.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The object of the present invention is to provide a kind of flanging die of using for slab and flanging process, solveThe flange of prior art, flange hole technology workpiece is being carried out after punching, the easy stress in hole portion edgeCause bounce-back to cave in, increased manufacturing tolerance and caused the problem that does not reach tolerance.
Technical scheme of the present invention is as follows:
A high accuracy flanging die of using for slab, comprises the patrix of an entirety assembling, described onOn mould, be provided with flange drift, wherein, also comprise that one is arranged at workpiece top the workpiece after punching is enteredThe backward flanging punch of row divergence process.
The described high accuracy flanging die of using for slab, wherein, described reverse drift is near workpieceOne end be provided with the enlarged portion of workpiece being carried out to divergence process.
The described high accuracy flanging die of using for slab, wherein, the cross section of described enlarged portion arrangesFor the top inverted trapezoidal wider than bottom.
The described high accuracy flanging die of using for slab, wherein, described enlarged portion is set to RAngle.
The described high accuracy flanging die of using for slab, wherein, the enlarged portion of described reverse driftBe set to a cone.
The described high accuracy flanging die of using for slab, wherein, described reverse drift is driven by patrixMoving.
A kind of workpiece flanging process, wherein, comprises the following steps:
Step a: workpiece is carried out to flange punching from lower to upper with drift;
Step b: increase a hole flanging operation, by the edge of hole flanging portion because bounce-back causes angle to a certain degreeDegree, the reverse drift that is arranged at workpiece top moves from top to bottom, and oppositely the enlarged portion of drift is to bounce-backHole portion edge expand, oppositely drift upwards resets, and exits workpiece.
Beneficial effect of the present invention: the present invention is by providing a kind of high accuracy flange die of using for slabTool and flanging process, the punching technology that has solved prior art is carrying out after hole flanging workpiece, hole portion limitCause bounce-back along easy stress, increased manufacturing tolerance and caused the problem that does not reach tolerance.The present invention is directed to workpiece hole portion and bounce-back occurs in various degree, provide different enlarged portion structure to reachPreferably hole portion expansion effect, simple in structure, reliability is high.
Brief description of the drawings
Fig. 1 is the structural representation of drift in the present invention.
Fig. 2 is the structural representation of reverse drift in the present invention.
Fig. 3 is the structural representation of reverse another embodiment of drift in the present invention.
Fig. 4 is the structural representation of reverse another embodiment of drift in the present invention.
The explanation of accompanying drawing mark:
Drift 1, reverse drift 2, enlarged portion 21, workpiece 3.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearer, clear and definite, referring to accompanying drawingDeveloping simultaneously, the present invention is described in more detail for embodiment.
Consult Fig. 1 and Fig. 2, the invention provides a kind of high accuracy flanging die of using for slab, compriseThe patrix (not indicating in figure) of one entirety assembling, is provided with drift 1 on described patrix, wherein, and also bagDraw together a reverse drift 2 that is arranged at the workpiece of workpiece 3 tops after to punching and carries out divergence process.
Further, described reverse drift 2 is provided with workpiece carry out expansion place near one end of workpieceThe enlarged portion 21 of reason, enlarged portion 21 is moved from top to bottom the hole portion of workpiece is expanded.
Further, the cross section of described enlarged portion 21 is set to the top inverted trapezoidal wider than bottom. RushedWorkpiece 3 hole portion edges behind hole are subject to internal stress effect to produce bounce-back (as shown in Figure 2), and edge is to workpieceBelow produces caving in to a certain degree, and enlarged portion 21 is down moved, and workpiece hole portion edge is by enlarged portion 21Edge pushes generation deformation outward, and the workpiece 3 hole portion edges of the rear-inclined that originally caves in are softened, apertureAperture while returning back to punching. Certainly, the cross sectional shape of enlarged portion 21 of the present invention has more than and is defined inInverted trapezoidal, consults Fig. 3, as the another kind of embodiment of the enlarged portion of the reverse drift of the present invention, and expansionPortion 21 is set to a hemisphere, and enlarged portion 21 is down moved, and workpiece hole portion edge is by enlarged portion 21The edge of smooth transition pushes generation deformation outward, and the enlarged portion setting of present embodiment makes workpiece hole portionWhen softened, deformation is more progressive, is not easy to damage workpiece. Consult Fig. 4, the expansion of the reverse drift of the present inventionOpen portion 21 and can also be set to a cone, the enlarged portion 21 in present embodiment is collapsed with workpiece hole portionThe limit of the edge contact of collapsing is longer, for the hole portion (back aperture of caving in that on workpiece, bounce-back degree is more seriousThe situation of dwindling is serious), the reverse drift 2 of present embodiment is more applicable.
Preferably, described reverse drift 2 is driven by patrix.
A kind of workpiece flanging process, wherein, comprises the following steps:
Step a: workpiece is carried out to flange punching from lower to upper with drift;
Step b: increase a hole flanging operation, by the edge of hole flanging portion because bounce-back causes angle to a certain degreeDegree, the reverse drift that is arranged at workpiece top moves from top to bottom, and oppositely the enlarged portion of drift is to bounce-backHole portion edge expand, oppositely drift upwards resets, and exits workpiece.
The present invention, by a kind of high accuracy flanging die and flanging process of using for slab is provided, solvesThe punching technology of prior art workpiece is being carried out after punching, the easy stress in hole portion edge causes insteadBullet, has increased manufacturing tolerance and has caused the problem that does not reach tolerance. The present invention is directed to workpiece hole portionThere is bounce-back in various degree, provide different enlarged portion structure to reach preferably hole portion expansion effect,Simple in structure, reliability is high.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, to ordinary skillPersonnel, can be improved according to the above description or be converted, and all these improvement and conversion are all answeredBelong to the protection domain of claims of the present invention.

Claims (7)

1. a high accuracy flanging die of using for slab, comprises the patrix that an entirety is assembled, described inOn patrix, be provided with drift, it is characterized in that, also comprise that one is arranged at workpiece top to the work after punchingPart carries out the reverse drift of divergence process.
2. the high accuracy flanging die of using for slab according to claim 1, is characterized in that,Described reverse drift is provided with the enlarged portion of workpiece being carried out to divergence process near one end of workpiece.
3. the high accuracy flanging die of using for slab according to claim 2, is characterized in that,The cross section of described enlarged portion is set to the top inverted trapezoidal wider than bottom.
4. the high accuracy flanging die of using for slab according to claim 2, is characterized in that,Described enlarged portion is set to a hemisphere.
5. the high accuracy flanging die of using for slab according to claim 2, is characterized in that,The enlarged portion of described reverse drift is set to a cone.
6. the high accuracy flanging die of using for slab according to claim 2, is characterized in that,Described reverse drift is driven by patrix.
7. a workpiece flanging process, is characterized in that, comprises the following steps:
Step a: workpiece is carried out to flange punching from lower to upper with drift;
Step b: increase a hole flanging operation, by the edge of hole flanging portion because bounce-back causes angle to a certain degreeDegree, the reverse drift that is arranged at workpiece top moves from top to bottom, and oppositely the enlarged portion of drift is to bounce-backHole portion edge expand, oppositely drift upwards resets, and exits workpiece.
CN201511008245.XA 2015-12-25 2015-12-25 High-precision flanging die for thick plate and flanging process Pending CN105598280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511008245.XA CN105598280A (en) 2015-12-25 2015-12-25 High-precision flanging die for thick plate and flanging process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511008245.XA CN105598280A (en) 2015-12-25 2015-12-25 High-precision flanging die for thick plate and flanging process

Publications (1)

Publication Number Publication Date
CN105598280A true CN105598280A (en) 2016-05-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511008245.XA Pending CN105598280A (en) 2015-12-25 2015-12-25 High-precision flanging die for thick plate and flanging process

Country Status (1)

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CN (1) CN105598280A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108213143A (en) * 2018-03-14 2018-06-29 西安交通大学 A kind of design method of the progressive flanging forming tool heads of cylinder
CN110340245A (en) * 2018-04-04 2019-10-18 浙江盾安热工科技有限公司 A kind of processing method of heat exchange fin, heat exchange fin and finned heat exchanger

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300476A2 (en) * 2001-10-05 2003-04-09 Benteler Automobiltechnik GmbH & Co. KG Process for manufacturing a hardened sheet metal profile
CN102527759A (en) * 2010-12-14 2012-07-04 深圳亿和模具制造有限公司 Hole flanging method and die for forming high flange on thin plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1300476A2 (en) * 2001-10-05 2003-04-09 Benteler Automobiltechnik GmbH & Co. KG Process for manufacturing a hardened sheet metal profile
CN102527759A (en) * 2010-12-14 2012-07-04 深圳亿和模具制造有限公司 Hole flanging method and die for forming high flange on thin plate

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
程新岭: "高精度翻边模的设计", 《模具工业》 *
谢文才: "奥迪轿车零件翻孔端部直径偏小浅析", 《汽车技术》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108213143A (en) * 2018-03-14 2018-06-29 西安交通大学 A kind of design method of the progressive flanging forming tool heads of cylinder
CN108213143B (en) * 2018-03-14 2019-04-09 西安交通大学 A kind of design method of the progressive flanging forming tool heads of cylinder
CN110340245A (en) * 2018-04-04 2019-10-18 浙江盾安热工科技有限公司 A kind of processing method of heat exchange fin, heat exchange fin and finned heat exchanger

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Application publication date: 20160525