CN1935447A - Method for making large-dimension holed memorial coin (medal) and die thereof - Google Patents
Method for making large-dimension holed memorial coin (medal) and die thereof Download PDFInfo
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- CN1935447A CN1935447A CN 200510200549 CN200510200549A CN1935447A CN 1935447 A CN1935447 A CN 1935447A CN 200510200549 CN200510200549 CN 200510200549 CN 200510200549 A CN200510200549 A CN 200510200549A CN 1935447 A CN1935447 A CN 1935447A
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- die
- base cake
- iron core
- impression
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Abstract
The present invention relates to a production method of large-size commemorative coin with hole and die. Said production method includes the following three steps: (A) preparation of blank cake; (b), preparation of upper and lower die plates and forming iron core; and (C), mounting die and stamping. Said invention also provides the concrete requirements of every step.
Description
Technical field
The present invention relates to the preparation method of a kind of commemorative coin (chapter), the preparation method of particularly a kind of large-dimension holed memorial coin (chapter) and be used for the mould of this method.
Background technology
Commemorative coin in the past or chapter, normally diameter is below 100mm, and the center is generally not with holes, and its weight is also lighter.Its conventional preparation method is to produce qualified product by sheet material towards operations such as cake, plain edge, annealing, polishing and impressions.Yet, need to produce large-dimension holed memorial coin (chapter), and this commemorative coin (chapter) is therefore strict to preparation technology because specification is big, embossment is high, centre bore is arranged (square hole, circular hole etc.) along with the development of situation.The inventor once manufactured experimently this commemorative coin (chapter) with conventional preparation method, shortcoming such as the burr of base cake, the angle of collapsing is excessive and the process-cycle is long, cost is high, embossment difficult quality guarantee consequently, especially in the process in work in-process heart hole, not only make figure line wearing and tearing but also have the serious angle of collapsing, burr, and inwall is residual tangible tear-strap, causes existing unacceptable mass defect.Owing to there is above-mentioned all mass defect, the technical staff by analysis after, thinks to adopt and produce small dimension, and the conventional production method that the center does not have a centre bore commemorative coin (chapter) is unfavorable, can not guarantee product quality.
Summary of the invention
The object of the present invention is to provide a kind of preparation method that can guarantee product quality, qualification rate height, the process-cycle is short, production cost is low large-dimension holed memorial coin (chapter).
Another object of the present invention provides the assembling die that the product of a kind of and described method preparation is complementary.
The preparation method of large-dimension holed memorial coin of the present invention (chapter) comprises following processing step:
The making of A, base cake
A), earlier after sheet material centre-drilling hole, process centre bore with slotting machine;
B), with behind the slotting machine processing base cake cylindrical, use lathe car base cake two sides and chamfering again;
C), the base cake is polished, polishes.
B, the making of die and moulding iron core up and down
A), at the inboard machining center locating slot of die up and down;
B), the machine-shaping iron core, its cross section and axial length respectively with centralized positioning groove, base cake thickness, base cake centre bore and the impression of die up and down before and after up and down the relative displacement of die be complementary.
C, dress mold pressing seal
A), will descend die, base cake, moulding iron core and the last die die sleeve of packing into according to a conventional method successively, carry out the impression first time at marking press, then to the impression semi-finished product lathe turning, anneal again, its annealing temperature is that 450 ℃, time are 50 minutes, make its hardness reach HB33～38, the semi-finished product after the annealing polish once more;
B), carry out second time impression, carry out turning, chamfering, double annealing afterwards again, make semi-finished product hardness still be HB33～38, and polish once more;
C), for the third time the impression after product figure line full, centre bore is peripheral and outer circular edge is regular, reaches the quality requirement of large-dimension holed memorial coin (chapter).
Described assembling die is made up of upper and lower die and die sleeve, and the inboard of its described upper and lower die is equipped with the centralized positioning groove, and the base cake places between the two, and the moulding iron core passes the centre bore of base cake, and two ends match with the centralized positioning groove of die up and down.
The center of described moulding iron core is provided with the screwed hole of being convenient to Qi Mo.
The cross section of described moulding iron core is square, and has certain tapering.
The two ends of described moulding iron core are provided with chamfering.
The present invention compared with prior art, adopted impression three times, and between per twice impression, anneal, having eliminated the metal processing plastic deformation that flow harden caused reduces, Zhuan Yong assembling die in addition, through trial-production produce proof this large-dimension holed memorial coin (chapter) preparation method have technology rationally, constant product quality, qualification rate height, the good characteristics of overall economic efficiency such as the process-cycle is short, production cost is low and the gold consumption is little.Also opened up a new process simultaneously for the production of other class large-dimension holed memorial coins (chapter).
Description of drawings
Fig. 1 is the vertical profile TV structure schematic diagram of assembling die;
Fig. 2 is the main TV structure schematic diagram of the commemorative coin of the inventive method preparation;
Fig. 3 is the backsight structural representation of the commemorative coin of the inventive method preparation.
The specific embodiment
Content of the present invention is described in detail by embodiment, does not limit but be not implemented example.
The inventive method is that 180mm, center square hole are that the commemorative coin of 50mm * 50mm is an example with the preparation outside diameter.At first select suitable gold sheet material, slotting machine is processed into the centre bore of 52.7mm * 52.7mm behind the drill centers; Slotting machine is processed into the base cake 2 that diameter is 185mm, and the machined into outside diameter is that 179mm and turning are processed the two sides to requiring weight, 3 * 45 ° chamfering, polishing, polishing; Assembling die make the inboard can at first process upper and lower die 1,4 by drawing with routine techniques engraving figure line, and be provided with centralized positioning groove 6 at the center; According to before and after the degree of depth of the thickness of base cake 2, centralized positioning groove 6 and the impression up and down the relative displacement of die make the cross section be the cross section of foursquare moulding iron core 5 and axial dimension respectively with centralized positioning groove 6, base cake thickness, base cake centre bore and impression before and after up and down the relative displacement of die be complementary, therefore, one end of moulding iron core 5 is 50.44mm * 50.44mm, the other end is 50.69mm * 50.69mm, the long 32.2mm of being, two chamfers are 1.5 * 45 °, for ease of opening mould, moulding iron core 5 has certain taper, and simultaneously the heart also is provided with the screwed hole of M12 therein; With routine techniques base cake 2 is packed on the following die of assembling die, die sleeve 3 is sleeved on outside it, the centre bore that the small end of moulding iron core 5 passes base cake 2 inserts in the centralized positioning groove 6 of following die 4, last die 1 is loaded on the top, centralized positioning groove 6 on it matches with the upper end of moulding iron core, on marking press, carry out the impression back turning first time, 450 ℃ of annealing made HB33～38 of its base cake 2 in 50 minutes, polishing, carry out the impression second time, turning to diameter is 179mm ± 0.05mm, 3 * 45 ° of chamferings, 2 * 45 ° of centre bore chamferings, 50 minutes HB33～38 of 450 ℃ of annealing impress for the third time through becoming its finished product of inspection figure line full, the centre bore periphery is regular with cylindrical, qualified warehouse-in.
Large-dimension holed memorial coin (chapter) steady quality that the inventive method is made, the qualification rate height also is applicable to the manufacturing of commemorative coin (chapter) of the big specification of other types simultaneously.
Claims (5)
1. the preparation method of a large-dimension holed memorial coin (chapter) is characterized in that making by following processing step:
The making of A, base cake
A), earlier after sheet material centre-drilling hole, process centre bore with slotting machine;
B), with behind the slotting machine processing base cake cylindrical, use lathe car base cake two sides and chamfering again;
C), the base cake is polished, polishes;
B, the making of die and moulding iron core up and down
A), at the inboard machining center locating slot of die up and down;
B), the machine-shaping iron core, its cross section and axial length respectively with centralized positioning groove, base cake thickness, base cake centre bore and the impression of die up and down before and after up and down the relative displacement of die be complementary;
C, dress mold pressing seal
A), will descend die, base cake, moulding iron core and the last die die sleeve of packing into according to a conventional method successively, carry out the impression first time at marking press, then to the impression semi-finished product lathe turning, anneal again, its annealing temperature is that 450 °, time are 50 minutes, make its hardness reach HB33～38, the semi-finished product after the annealing polish once more;
B), carry out second time impression, carry out turning, chamfering, double annealing afterwards again, make semi-finished product hardness still be HB33～38, and polish once more;
C), for the third time the impression after product figure line full, centre bore is peripheral and outer circular edge is regular, reaches the quality requirement of large-dimension holed memorial coin (chapter).
2. the assembling die that is used for the described method of claim 1, form by upper and lower die and die sleeve, the inboard that it is characterized in that described upper and lower die is equipped with the centralized positioning groove, the base cake places between the two, the moulding iron core passes the centre bore of base cake, and two ends match with the centralized positioning groove of die up and down.
3. assembling die according to claim 2 is characterized in that the center of described moulding iron core is provided with the screwed hole of being convenient to Qi Mo.
4. assembling die according to claim 2 is characterized in that the cross section of described moulding iron core is square, and has certain tapering.
5. assembling die according to claim 2 is characterized in that the two ends of described moulding iron core are provided with chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102005496A CN100443251C (en) | 2005-09-22 | 2005-09-22 | Method for making large-dimension holed memorial coin (medal) and die thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005102005496A CN100443251C (en) | 2005-09-22 | 2005-09-22 | Method for making large-dimension holed memorial coin (medal) and die thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1935447A true CN1935447A (en) | 2007-03-28 |
| CN100443251C CN100443251C (en) | 2008-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005102005496A Expired - Fee Related CN100443251C (en) | 2005-09-22 | 2005-09-22 | Method for making large-dimension holed memorial coin (medal) and die thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN100443251C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100528031C (en) * | 2007-11-07 | 2009-08-19 | 中国印钞造币总公司 | Impression and manufacturing device and method for coin middle with hole and its analogs |
| CN102106631A (en) * | 2009-12-25 | 2011-06-29 | 上海造币有限公司 | Preparation method of for -sided embossed leaf metal souvenir badge |
| CN101890863B (en) * | 2009-05-21 | 2012-05-02 | 中国印钞造币总公司 | Process for manufacturing copper or iron ore series of noble metal commemorative coins or medals and dies used thereby |
| CN106945447A (en) * | 2017-04-20 | 2017-07-14 | 成都天和银楼有限责任公司 | A kind of production technology of embossed metal craft of the surface with gold layer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2504282A (en) * | 2012-07-24 | 2014-01-29 | Royal Mint Ltd | Method of manufacturing a coining die |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1231948B (en) * | 1989-09-01 | 1992-01-16 | Zecca Dello Ist Poligrafico | BIMETALLIC TONDELLO, IN PARTICULAR FOR COINS AND SIMILAR |
| CN2106713U (en) * | 1991-03-20 | 1992-06-10 | 张永铭 | Coloured stamping press |
| CN1227166A (en) * | 1998-12-15 | 1999-09-01 | 范贤汉 | Convex cavity mold for double-side concave relief jewelry |
| CN1276288A (en) * | 1999-06-04 | 2000-12-13 | 史静微 | Method for manufacturing gold coin, badge, card or likes with colour pattern |
| CN1219663C (en) * | 2001-03-09 | 2005-09-21 | 沈阳造币厂 | Large gold coin with high figure relief and its mold making process |
| CN1280449C (en) * | 2004-01-08 | 2006-10-18 | 中国印钞造币总公司 | Method of making hard alloy punching mould |
-
2005
- 2005-09-22 CN CNB2005102005496A patent/CN100443251C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100528031C (en) * | 2007-11-07 | 2009-08-19 | 中国印钞造币总公司 | Impression and manufacturing device and method for coin middle with hole and its analogs |
| CN101890863B (en) * | 2009-05-21 | 2012-05-02 | 中国印钞造币总公司 | Process for manufacturing copper or iron ore series of noble metal commemorative coins or medals and dies used thereby |
| CN102106631A (en) * | 2009-12-25 | 2011-06-29 | 上海造币有限公司 | Preparation method of for -sided embossed leaf metal souvenir badge |
| CN102106631B (en) * | 2009-12-25 | 2014-08-13 | 上海造币有限公司 | Preparation method of for -sided embossed leaf metal souvenir badge |
| CN106945447A (en) * | 2017-04-20 | 2017-07-14 | 成都天和银楼有限责任公司 | A kind of production technology of embossed metal craft of the surface with gold layer |
| CN106945447B (en) * | 2017-04-20 | 2019-10-18 | 成都天和银楼有限责任公司 | A kind of production technology of the embossed metal craft of surface with gold layer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100443251C (en) | 2008-12-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenyang Mint Assignor: China banknote printing and Minting Corporation Contract fulfillment period: 2009.1.6 to 2014.1.5 contract change Contract record no.: 2009210000084 Denomination of invention: Method for making large-dimension holed memorial coin (medal) and die thereof Granted publication date: 20081217 License type: Exclusive license Record date: 2009.4.7 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.1.6 TO 2014.1.5; CHANGE OF CONTRACT Name of requester: SHENYANG MINT FACTORY Effective date: 20090407 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20130922 |