CN108296720B - Punching forging forming method for near-type blank of micro-piece transfer die - Google Patents
Punching forging forming method for near-type blank of micro-piece transfer die Download PDFInfo
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- CN108296720B CN108296720B CN201810123479.6A CN201810123479A CN108296720B CN 108296720 B CN108296720 B CN 108296720B CN 201810123479 A CN201810123479 A CN 201810123479A CN 108296720 B CN108296720 B CN 108296720B
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Abstract
The invention relates to a punching and forging forming method of a near-type blank of a micro-piece transfer die, which comprises the following steps: s1, selecting a prefabricated customized section according to the shape of a finished product; s2, forming a first semi-finished product which is closer to a plurality of finished products in shape by sequentially arranging the reference surface and the side surface of the customized sectional material through micro-machining; s3, cutting the first semi-finished product processed in the step S2 into a plurality of second semi-finished products with the shape close to that of the finished product; s4, forging the cut second semi-finished product through a die to obtain a third semi-finished product; s5, performing flash trimming on the inner part and the outer part of the third semi-finished product obtained by forging and pressing in the step S4; and S6, performing surface treatment on the third semi-finished product processed in the step S5 to obtain a finished product. According to the invention, multiple groups of near-finished product miniature parts are obtained by cutting and forging the prefabricated near-type section bar, so that the forging and pressing deformation resistance in the forming process is reduced, the forging and pressing times, the pressure maintaining time, annealing and other transition processes are reduced, the equipment and die investment is saved, and the production efficiency is improved.
Description
Technical Field
The invention relates to a miniature part forming method, in particular to a miniature part stamping forming method of electronic products such as mobile phones and the like.
Background
In the field of metal manufacturing, the application range of micro metal parts is getting larger and larger, and the micro metal parts are widely applied to the manufacturing fields of mobile phones, refrigerators, motor vehicles and the like. Therefore, at present, high demands are also placed on metal parts, in particular on metal parts of small dimensions. Forging, cold extrusion and the like are common process methods, and a rod-shaped or plate-shaped blank is subjected to strong pressure through a die to generate plastic deformation so as to obtain the required shape and size. The thin-wall metal piece, especially the metal piece with the side wall thickness less than 1mm, has the advantages that the thin wall thickness is thin, the material flowing space is small, the flowing needs larger pressure, the thin wall can not bear the pressure easily, and the unstable folding phenomenon occurs.
At present, the following metal part manufacturing processes are commonly adopted, and as can be seen from the table, the existing processes have different problems and cannot meet the requirements of a CCM module.
Disclosure of Invention
In view of the above, it is desirable to provide a method for press-forging a near-type blank of a micro-part transfer die, which has high strength, high dimensional accuracy, stable performance, and low cost.
In order to solve the technical problem, the stamping and forging forming method of the near-type blank of the micro-piece transfer die comprises the following steps:
s1, section bar preparation: analyzing the product structure, and selecting a preprocessed customized sectional material according to the shape of a finished product, wherein the customized sectional material is formed by a plurality of finished products;
s2, removing multiple materials: determining the section which needs to be processed most by the customized profile as a datum plane; forming a first semi-finished product which is formed by sequentially arranging a plurality of finished products and has a shape closer to that of the reference surface and the side surface of the customized sectional material through micro-processing;
s3, cutting the granules: cutting the first semi-finished product processed in the step S2 into a plurality of second semi-finished products with the shape similar to that of the finished product;
s4, precision swaging: forging and pressing the cut second semi-finished product through a die to obtain a third semi-finished product;
s5, cutting the granules: performing flash trimming on the inner part and the outer part of the third semi-finished product obtained by forging in the step S4;
s6, post-processing: and (5) carrying out surface treatment on the third semi-finished product processed in the step (S5) to obtain a finished product.
In the above-mentioned method for press-forging a near-type blank of a micro-part transfer die according to the present invention, the customized section is formed by press-molding a plate or a cylindrical section through a die.
In the above-mentioned method for press-forging a near-type blank of a micro-piece transfer die according to the present invention, the customized section bar is made of aluminum or cold rolled steel or stainless steel.
In the above-described method for press-forming a near-type blank of a micro-work transfer die according to the present invention, the surface treatment step in step S6 includes grinding, sand blasting, plating, and cleaning processes.
In the above-mentioned method for forming a near-type blank of a micro-part transfer die according to the present invention, the ratio of the cross-section of the finished product to the cross-section of the customized profile is 90% to 110%.
In the method for press forging a near type blank of a micro-work transfer die according to the present invention, the forging in step S4 is a step forging.
In the above-mentioned method for press-forging and forming a proximate blank of a micro-part transfer die of the present invention, the reference surface and the side surface of the customized profile in step 2 are micro-machined by a punch or a grooving machine; in the step S3, the first semi-finished product is cut by a punch or a grooving machine to obtain a second semi-finished product; and (4) performing flash trimming, notching and drawing slope removing trimming on the forged second semi-finished product in the step S4 through a punch and a grooving machine to obtain a semi-finished product which is more similar to the finished product.
In the method for forming a near-type blank of a micro-piece transfer die according to the present invention, the steps S3 to S5 include a plurality of transfer dies, and the plurality of second semi-finished products cut from the first semi-finished product are subjected to different forging or stamping processes in each of the transfer dies by the robot of the transfer dies.
In the above-described method for press-forming a near-type blank of a micro-piece transfer die according to the present invention, in steps S3 to S5, the second semi-finished product and the third semi-finished product are subjected to high-frequency heating treatment in the transfer die. (in the same way as the above claims)
In the above-mentioned press forging forming method of the transfer die near-type blank of the present invention, the finished product is a minute precision metal part.
The invention has the beneficial effects that: the method comprises the steps of firstly determining a customized section through the internal structure and the external structure of a finished product, then conveying the customized section to equipment such as a punch press and a grooving machine through a manipulator to perform cutting, blanking, forging and pressing on the customized section to obtain a first semi-finished product, enabling the structure of the manufactured first semi-finished product to be closer to that of the finished product, then cutting the first semi-finished product into a plurality of second semi-finished products with the shape close to that of the finished product, and finally performing surface treatment on the manufactured third semi-finished product through electroplating, sand blasting, grinding, cleaning and other procedures to obtain a more perfect finished product. The forming method of the invention omits complex procedures of multiple forging, annealing and the like on the prefabricated section bar in the traditional process through the process of manufacturing the blank with the shape close to the final product, and the process flow greatly reduces the production cost of the product in the aspects of equipment, dies and energy.
The method of the invention also achieves the following technical effects: the method can forge thin-wall structure products with the thickness less than 0.3mm by using the near-type blank with thinner dimension; the invention integrates punching and forging processes in a transfer die mode, and stations such as heating, overturning and the like are added as necessary, so that various process methods can be freely combined in the transfer die, and more complex product structures and high processing precision can be manufactured; the invention creatively cuts forging flash, notch, removes draft and the like after forging and pressing working procedure with punching and other working stations, and continuously produces in a set of die, thereby improving the operation efficiency and reducing the processing cost; the miniature part formed by forging and pressing avoids the defects of die-casting shrinkage cavity and the like, and has the advantages of higher material density, better strength, high product smoothness and good appearance quality.
Drawings
Fig. 1 is a block flow diagram of a method of die forging a near-type blank of a micro-part transfer die in accordance with the present invention.
Fig. 2 is a flow chart of an embodiment of the method of the present invention for stamp forming a near-die blank of a micro-part transfer die.
Fig. 3 is a flow chart of another embodiment of the method of the present invention for stamp forming a near-type blank of a micro-part transfer die.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the method for press-forming a near-type blank of a micro-piece transfer die according to the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a method for press-forging a proximate blank of a micro-device transfer die according to an embodiment of the present invention includes the following steps:
s1, customizing the section bar: the prefabricated customized section bar 100 is selected according to the shape of the finished product, the shape of the customized section bar 100 is a semi-finished product with an approximate shape formed by sequentially arranging a plurality of finished products 500, the arrangement mode of the plurality of finished products 500 is a side-by-side mode or an annular mode, and the shape of the customized section bar 100 can be a strip shape or a cylindrical shape. Firstly, determining the appearance structure of the customized section bar 100 through the internal structure and the external structure of the finished product 500, then conveying the customized section bar 100 to equipment such as a punch press, a grooving machine and the like through a manipulator to perform the working procedures such as cutting, blanking, forging and pressing on the customized section bar 100 to obtain a first semi-finished product 200, as shown in fig. 2, during the micro-machining process of the customized section bar 100, firstly obtaining a semi-finished product shown as a mark 120 in fig. 2, and then further processing to make the appearance structure of the first semi-finished product 200 closer to that of the finished product 500;
s2, near type cutting: determining the section of the customized profile 100 which needs to be processed most as a datum plane; forming a first semi-finished product 200 which is closer to the shape formed by sequentially arranging a plurality of finished products 500 on the reference surface and the side surface of the customized profile 100 through micromachining;
s3, cutting the material particles: cutting the first semi-finished product 200 processed in the step S2 into a plurality of second semi-finished products 300 with the shape similar to that of the finished product;
s4, cutting the material particles: forging and pressing the cut second semi-finished product 300 through a die to obtain a third semi-finished product 400;
s5, precision swaging: performing flash trimming on the inner and outer parts of the third semi-finished product 400 obtained by forging in the step S4;
s6, post-processing: and (5) performing surface treatment on the third semi-finished product 400 processed in the step (S5) to obtain a finished product 500.
The method of the invention omits complex procedures of multiple forging, annealing and the like of the prefabricated section bar in the traditional process, and the process flow greatly reduces the production cost of the product in the aspects of equipment, dies and energy.
As shown in fig. 2 and fig. 3, in the method for press-forging a near-type blank of a micro-member transfer die according to the present invention, the customized sectional material 100 is formed by press-molding a plate or a cylinder through a die, wherein the customized sectional material 100 may be an aluminum material or cold rolled steel or stainless steel.
And (5) performing surface treatment on the part subjected to the finishing of the third semi-finished product 400 in the step S6 through the working procedures of grinding, sand blasting, electroplating, cleaning and the like, so that the part is more attractive, and finally obtaining a finished product.
The ratio of the cross section of the finished product 500 to the cross section of the customized profile 100 in the stamping and forging forming method of the near-type blank of the micro-piece transfer die is 90-110%. Specifically, the cross-sectional shape of the customized profile 100 is the maximum outer shape and the minimum inner profile of the finished product 500, and the deformation amount of the customized profile 100 and the cross-sectional shape of the finished product can be controlled within 10 percent.
In the method for press forging a proximate blank of a micro-part transfer die according to the present invention, if the structure of the finished product 500 to be formed is complicated, the forging process in step S4 may be a one-step forging or a step-by-step forging, if the structure of the finished product 500 is complicated.
In step S2, micromachining the reference surface and the side surface of the customized section bar 100 by using a punch press or a grooving machine; in step S3, the first semi-finished product 200 is cut by a punch or a grooving machine to obtain a second semi-finished product 300; the second semi-finished product 300 forged in the step S4 is trimmed by flash trimming, notching and removing draft by a punch and a grooving machine, so as to obtain a semi-finished product 320 more similar to the finished product 500.
Steps S3 to S5 include a plurality of transfer dies, and the plurality of second semi-finished products 300 cut from the first semi-finished product 200 are subjected to different processes of forging or swaging in the respective transfer dies by the robot of the transfer dies.
In steps S3 to S5, the second semi-finished product 300 and the third semi-finished product 400 are subjected to high-frequency heating treatment in the transfer mold.
In the method for press forging and forming a proximate blank of a micro-part transfer die of the present invention, the finished product 500 is a micro-part of a dual camera support module, or a micro-part of other electronic products such as a mobile phone, a camera, etc.
The invention relates to a method for forging and forming a near-type blank of a micro-piece transfer die, which comprises the steps of firstly determining the appearance structure of a customized section bar 100 according to the internal structure and the external structure of a finished product 500, then conveying the customized section bar 100 to equipment such as a punch press and a grooving machine through a manipulator to perform the procedures of cutting, blanking, forging and the like on the customized section bar 100 to obtain a first semi-finished product 200, enabling the structure of the manufactured first semi-finished product 200 to be closer to the finished product 500, then cutting the first semi-finished product 200 into a plurality of second semi-finished products 300 with the shapes close to the finished product 500, performing the procedures such as cutting, blanking, forging and the like on the second semi-finished products 300 to obtain 320 semi-finished products as marked in figure 2, performing precise extrusion forging on the second semi-finished products through mature equipment such as the punch press and the grooving machine to obtain a third semi-finished product 400, and finally performing the procedures such as, a more finished product 500 is obtained. The forming method of the invention omits complex procedures of multiple forging, annealing and the like on the prefabricated section bar 100 in the traditional process through the process of manufacturing the blank with the shape close to the finished product 500, and the process flow greatly reduces the production cost of the product in the aspects of equipment, dies and energy.
The method of the invention also achieves the following technical effects: the method can forge thin-wall structure products with the thickness less than 0.3mm by using the near-type blank with thinner dimension; the invention integrates punching and forging processes in a transfer die mode, and stations such as heating, overturning and the like are added as necessary, so that various process methods can be freely combined in the transfer die, and more complex product structures and high processing precision can be manufactured; the invention creatively cuts forging flash, notch, removes draft and the like after forging and pressing working procedure with punching and other working stations, and continuously produces in a set of die, thereby improving the operation efficiency and reducing the processing cost; the miniature part formed by forging and pressing avoids the defects of die-casting shrinkage cavity and the like, and has the advantages of higher material density, better strength, high product smoothness and good appearance quality.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A method for press-forging a proximate blank of a micro-piece transfer die, comprising the steps of:
s1, selecting a prefabricated customized profile (100) according to the shape of the finished product;
s2, determining the section of the customized section which needs to be processed most as a datum plane; forming a first semi-finished product (200) which is closer to a plurality of finished products (500) in shape by sequentially arranging the reference surface and the side surface of the customized profile (100) through micromachining;
s3, cutting the first semi-finished product (200) processed in the step S2 into a plurality of second semi-finished products (300) with the shape close to that of the finished product;
s4, forging the cut second semi-finished product (300) through a die to obtain a third semi-finished product (400);
s5, performing flash trimming on the inner part and the outer part of the third semi-finished product (400) obtained by forging and pressing in the step S4;
s6, carrying out surface treatment on the third semi-finished product (400) processed in the step S5 to obtain a finished product (500);
the steps S3 to S5 include several transfer dies, the second semi-finished products (300) cut from the first semi-finished product (200) are forged or swaged in different steps in each transfer die by a manipulator of the transfer dies, for example, the structure of the finished product (500) is complicated, and the forging step in the step S4 is step forging or step swaging.
2. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: the customized sectional material (100) is formed by extrusion molding of a plate or a cylindrical material through a section die.
3. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: the customized section bar (100) is made of aluminum or cold rolled steel or stainless steel.
4. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: the surface treatment step in step S6 includes grinding, sandblasting, plating, and cleaning processes.
5. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: the ratio of the cross section of the finished product (500) to the cross section of the customized sectional material (100) is 90-110%.
6. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: the forging in the step S4 is a step forging or a step swaging.
7. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: micromachining the reference surface and the side surface of the customized profile (100) in the step S2 through a punch press or a grooving machine; in the step S3, the first semi-finished product (200) is cut by a punch or a grooving machine to obtain a second semi-finished product (300); and (4) performing flash trimming, notching and drawing slope removing trimming on the second semi-finished product (300) forged in the step (S4) through a punch and a grooving machine to obtain a semi-finished product which is more similar to the finished product (500).
8. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: in the steps S3 to S5, the second semi-finished product (300) and the third semi-finished product (400) may be subjected to a high-frequency heating process in the transfer mold.
9. The method of stamp forming a micro-device transfer die near-type blank according to claim 1, wherein: the finished product (500) is a double-camera bracket module.
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| CN108296720B true CN108296720B (en) | 2021-01-29 |
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| CN102029510A (en) * | 2010-11-15 | 2011-04-27 | 江门市亿捷五金制品有限公司 | Method for making hot forging molded bicycle knee joint |
| CN103231002B (en) * | 2013-04-19 | 2015-02-18 | 亚超特工业有限公司 | Forging mould and molding method of metal casing applied to electronic device |
| CN103831597B (en) * | 2014-04-01 | 2017-02-08 | 台州市中奥特种设备检测技术服务有限公司 | Copper alloy valve forging production processing technique |
| TW201609351A (en) * | 2014-09-03 | 2016-03-16 | 李明殷 | Thermal forming device and manufacturing methodology applicable for metal shell or metal plate |
| CN104476108A (en) * | 2014-09-24 | 2015-04-01 | 天津三星通信技术研究有限公司 | Method and device for producing electronic product shell |
| CN105397491A (en) * | 2015-09-23 | 2016-03-16 | 东莞市远弈数控精密机械有限公司 | Electronic product aluminum shell cold forging (cold heading) method and product thereof |
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