CN101157114A - A method for preparing rivet and rivet forging mold - Google Patents
A method for preparing rivet and rivet forging mold Download PDFInfo
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- CN101157114A CN101157114A CNA2007100283212A CN200710028321A CN101157114A CN 101157114 A CN101157114 A CN 101157114A CN A2007100283212 A CNA2007100283212 A CN A2007100283212A CN 200710028321 A CN200710028321 A CN 200710028321A CN 101157114 A CN101157114 A CN 101157114A
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- rivet
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- chamfering
- forging mold
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Abstract
The invention discloses a rivet manufacturing method and a rivet forging die. The rough piece of the rivet is arranged in an integrated forging die to punch to finish the process of chamfering and perforating to form a semi finished product, and then the semi finished product is processed on the surface; a punching hole is arranged in the die, a chamfering part which is used to chamfer the rough piece is arranged at the bottom part of the punching hole, a nosespike which is used for the hole punching extends into the hole from the bottom part of the punching hole; the process of chamfering and perforating can be finished at the same time through the integrated die which is adopted by the method and equipment, the production efficiency is effectively improved, and the manufacturing cost is reduced; the structure of the nosespike is improved, thus the processing requirement is met and the problem of nosespike breaking because of an inner returning angle is avoided; in addition, the invention also improves the process of the surface processing, effectively improves the corrosion resistance of the finished product, and prolongs the service life of the rivet.
Description
Technical field
The present invention relates to a kind of manufacture method and forging mold of rivet.Especially a kind of manufacture method and forging mold that is used for the connection rivet on the wiper.
Background technology
Rivet is a kind of connector very commonly used, generally comprise rivet head, the body of rod and deformable realize the part of riveted joint, rivet inserts in the rivet hole during for the ease of installation, deformable portion generally all is provided with chamfering and prevents to produce sharp corner and damage, and realizes riveted joint and deformable portion also is provided with the hole so that produce deformation.Make this rivet at present and need adopt two molds: chamfering is used mould with mould with boring a hole, this is owing to adopt existing mould to carry out chamfering and perforation simultaneously, the Nei Huijiao that meeting formation is certain can be blocked by interior time angle when the thimble of perforation usefulness is withdrawn, thereby causes the problem of broken needle.In addition, each parts of the wiper of automobile also are to need rivet to connect, and existing rivet all is to adopt stainless iron as raw material, only electroplates the surface treatment of black zinc and coating passivator behind forging molding, the corrosion resistance of finished product is poor, is easy to generate corrosion and destruction.
Summary of the invention
The object of the present invention is to provide a kind of manufacture method of rivet, can simplify the processing technology of existing rivet, reduce production costs.
Another object of the present invention is to provide a kind of rivet forging mold, can finish the technology of chamfering and perforation simultaneously and can not cause fractureing of thimble in this mould.
The present invention realizes above-mentioned purpose like this:
A kind of manufacture method of rivet is characterized in that embryo spare with rivet places that chamfering is finished in punching press in the incorporate forging mold, piercing process forms semi-finished product, carries out surface treatment to semi-finished product then.
As improvement of the technical scheme, described surface treatment comprises following processing step: semi-finished product are carried out shot-peening in the forging back or sandblast shakes grinding then to remove the iron filings on surface, strengthen corrosion resistance, plate black zinc and coating passivator at last on half-finished surface.
A kind of rivet forging mold is characterized in that comprising die ontology, is provided with punching hole in the mould, and the bottom in this hole is provided with the chamfered section that is used for embryo spare is carried out chamfering, has the thimble of perforation usefulness to extend in the hole from the punching hole bottom.
As improvement of the technical scheme, described thimble comprises syringe needle, needle body and is connected syringe needle and the pin neck portion of the camber line shape that is connected syringe needle and needle body, is greater than or equal to the maximum gauge of syringe needle with the diameter of the corresponding pin neck of chamfered section root portion.
The invention has the beneficial effects as follows: can adopt incorporate mould to finish the chamfering of rivet, piercing process simultaneously, effectively raise production efficiency, reduced manufacturing cost; Structure to thimble is improved, and its needs that can satisfy processing have been avoided because the problem of interior time angle broken needle; The present invention also improves the surface-treated operation in addition, can effectively improve the corrosion resistance of finished product, has prolonged the service life of rivet.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1 is a forging molding process schematic diagram of the present invention;
Fig. 2 is the structural representation that forges among the present invention with cutter.
The specific embodiment
With reference to Fig. 1, a kind of manufacture method of rivet places the embryo spare of rivet that chamfering is finished in punching press in the incorporate forging mold, piercing process forms semi-finished product, then semi-finished product is carried out surface treatment.Having solved existing production rivet needs two cover forging molds to carry out the trouble of chamfering and piercing process respectively, and the production technology of simplification has improved production efficiency, has reduced the infusion of financial resources of production mould simultaneously.
In order to satisfy the needs of above-mentioned manufacture method, the present invention improves the rivet forging mold, and it comprises die ontology 1, is provided with punching hole 2 in the mould, the bottom in this hole is provided with the chamfered section 4 that is used for embryo spare 3 is carried out chamfering, has the thimble 5 of perforation usefulness to extend in the hole from punching hole 2 bottoms.Wherein above-mentioned thimble 5 comprises syringe needle 51, needle body 52 and and be connected syringe needle 51 and is connected the pin neck portion 53 of syringe needle 51 and the camber line shape of needle body 52, is greater than or equal to the maximum gauge of syringe needle 51 with the diameter of the corresponding pin neck of chamfered section 4 roots portion 53.The diameter of the pin neck portion 53 of existing thimble 5 mainly is for the ease of the withdraw of the needle less than the diameter of syringe needle 51 all generally, if adopt existing thimble 5 to carry out the Forging Technology of chamfering and perforation simultaneously, thimble 5 penetrates and forms after the perforation then that the end of rivet forms chamferings in the chamfered section 4 of mould in the rivet, go back to the angle in Chuan Kong hole wall will form so and dwindled the diameter that perforation exports, the withdraw of the needle the time, thimble 5 will be stuck and be easy to form broken needle.And the present invention mainly improves the pin neck portion 53 that has needle body 52 now in order to address the above problem, and makes the maximum gauge that is greater than or equal to syringe needle 51 with the diameter of the corresponding pin neck of chamfered section 4 roots portion 53.In the forming process of chamfering, the interior time angle that is produced can with 53 punching presses mutually of pin neck portion, go back to the formation and the interior angle of going back to of extruding at angle in stoping, make it to reduce even eliminate, make its diameter that is equal to or greater than thimble syringe needle 51 with the outlet diameter that enlarges perforation, the phenomenon that just can not occur the card pin so during the withdraw of the needle guarantees that thimble 5 withdraws from perforation smoothly.
Need satisfy certain corrosion resistance with the connection of windscreen wiper parts with rivet at automobile, the rivet that existing wiper is used generally all is to adopt stainless iron as raw material, in the process of wire drawing and forging, just produced a large amount of contacting and friction with the tungsten alloy of mould, and form the irony layer of easy corrosion on the surface of rivet, and the process of surface treatment of product is to electroplate black zinc and coating passivator under the situation of not removing surperficial irony layer after the existing moulding.In use, the irony layer will produce corrosion up to whole rivet by corrosion and destruction.The present invention has also improved existing process of surface treatment, comprises following processing step: semi-finished product are carried out shot-peening or sandblast shake grinding again to remove the iron filings on surface, plate black zinc and coating passivator at last on half-finished surface.Technology by shot-peening or sandblast adheres to lip-deep iron filings through the vibrations removal again, carries out processing zinc-plated and coating passivator at last again, so just can effectively prevent the corrosion of rivet, has prolonged the service life of rivet greatly.
In addition, in the process that generates this rivet body, also relate to a kind of cutter, as shown in Figure 2, this cutter is installed on the processing machine, driving it by drive unit moves and finishes cutting processing, this cutter comprises cutter body 6 and the cutting hole 7 that is arranged on the body 6, also be provided with tungsten alloy steel layer 8 at the back side of cutter body 6, the stainless steel iron wire is passed in the cutting hole 7, under the driving of drive unit, stainless iron wire is cut, simultaneously the section of the 8 pairs of stainless iron wire of tungsten alloy steel layer at cutter body 6 back sides is polished removing the iron filings on surface, thereby effectively prevents the corrosion of rivet section; Tungsten alloy steel layer 8 on this cutter, increases the service life to strengthen its rigidity through Overheating Treatment.
The present invention adopts incorporate mould to finish the chamfering of rivet, piercing process simultaneously, effectively raises production efficiency, has reduced manufacturing cost; Structure to thimble 5 is improved, and its needs that can satisfy processing have been avoided because the problem of interior time angle broken needle; The present invention also improves the surface-treated operation in addition, can effectively improve the corrosion resistance of finished product, has prolonged the service life of rivet.
Claims (5)
1. the manufacture method of a rivet is characterized in that embryo spare with rivet places that chamfering is finished in punching press in the incorporate forging mold, piercing process forms semi-finished product, carries out surface treatment to semi-finished product then.
2. be applied to a kind of rivet forging mold of the described method of claim 1, it is characterized in that comprising die ontology (1), be provided with punching hole (2) in the mould, the bottom in this hole (2) is provided with the chamfered section (4) that is used for embryo spare (3) is carried out chamfering, has the thimble (5) of perforation usefulness to extend in the hole from punching hole (2) bottom.
3. a kind of rivet forging mold according to claim 2, it is characterized in that described thimble (5) comprises syringe needle (51), needle body (52) and is connected the pin neck portion (53) of the camber line shape of syringe needle (51) and needle body (52), be greater than or equal to the maximum gauge of syringe needle (51) with the diameter of chamfered section (4) root corresponding pin neck portion (53).
4. the manufacture method of a kind of rivet according to claim 1, it is characterized in that described surface treatment comprises following processing step: semi-finished product are carried out shot-peening or sandblast shake then, plate black zinc and coating passivator at last on half-finished surface to remove the iron filings on surface.
5. according to the manufacture method of the described a kind of rivet of claim 1, the base material that it is characterized in that described rivet is a stainless iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100283212A CN100525951C (en) | 2007-05-26 | 2007-05-26 | A method for preparing rivet forging mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100283212A CN100525951C (en) | 2007-05-26 | 2007-05-26 | A method for preparing rivet forging mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101157114A true CN101157114A (en) | 2008-04-09 |
| CN100525951C CN100525951C (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100283212A Expired - Fee Related CN100525951C (en) | 2007-05-26 | 2007-05-26 | A method for preparing rivet forging mold |
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| CN (1) | CN100525951C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912185A (en) * | 2010-08-16 | 2010-12-15 | 南京宝庆首饰总公司 | Jewellery and manufacturing method thereof |
| CN102689140A (en) * | 2012-05-29 | 2012-09-26 | 杭州芬麦特机械有限公司 | Method for processing spring arm |
| CN104722624A (en) * | 2015-03-10 | 2015-06-24 | 德清张工五金有限公司 | Rivet stamping device |
| CN107529856A (en) * | 2015-07-22 | 2018-01-02 | Ykk株式会社 | Rivet |
| CN109488672A (en) * | 2019-01-16 | 2019-03-19 | 佛山市巨隆金属制品有限公司 | A kind of packet stainless steel tap rivet and preparation method thereof |
| CN112828772A (en) * | 2019-11-25 | 2021-05-25 | 新兴县同鑫五金塑胶有限公司 | Stainless steel surface grinding and polishing process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB768182A (en) * | 1955-01-28 | 1957-02-13 | Deutsch Company Inc | Improvements relating to blind rivets |
| CN2460779Y (en) * | 2000-12-28 | 2001-11-21 | 上海交通大学 | Easy dismounted rivet |
| RU2220808C1 (en) * | 2002-04-22 | 2004-01-10 | Открытое акционерное общество "Белебеевский завод "Автонормаль" | Method for making semihollow rod type stepped parts |
-
2007
- 2007-05-26 CN CNB2007100283212A patent/CN100525951C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912185A (en) * | 2010-08-16 | 2010-12-15 | 南京宝庆首饰总公司 | Jewellery and manufacturing method thereof |
| CN102689140A (en) * | 2012-05-29 | 2012-09-26 | 杭州芬麦特机械有限公司 | Method for processing spring arm |
| CN104722624A (en) * | 2015-03-10 | 2015-06-24 | 德清张工五金有限公司 | Rivet stamping device |
| CN107529856A (en) * | 2015-07-22 | 2018-01-02 | Ykk株式会社 | Rivet |
| CN109488672A (en) * | 2019-01-16 | 2019-03-19 | 佛山市巨隆金属制品有限公司 | A kind of packet stainless steel tap rivet and preparation method thereof |
| CN112828772A (en) * | 2019-11-25 | 2021-05-25 | 新兴县同鑫五金塑胶有限公司 | Stainless steel surface grinding and polishing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100525951C (en) | 2009-08-12 |
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Granted publication date: 20090812 Termination date: 20120526 |