CN108515100B - Method for regionally thinning metal plate and card holder manufactured by method - Google Patents
Method for regionally thinning metal plate and card holder manufactured by method Download PDFInfo
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- CN108515100B CN108515100B CN201810189942.7A CN201810189942A CN108515100B CN 108515100 B CN108515100 B CN 108515100B CN 201810189942 A CN201810189942 A CN 201810189942A CN 108515100 B CN108515100 B CN 108515100B
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- thinning
- card
- metal plate
- stamping
- carrying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Punching Or Piercing (AREA)
Abstract
The application provides a regional thinning method for a metal plate, which comprises the following steps: s201, providing a metal plate and carrying out first stamping and thinning operation on the provided metal plate; firstly fixing the base body part of the metal plate without being thinned, providing a first thinning punch to carry out first thinning on the area of the metal plate needing to be thinned, and forming a thinning area and a step at the joint of the thinning area and the base body part on the metal plate after the first thinning. S202, carrying out secondary stamping and thinning on the metal plate which is subjected to the primary stamping and thinning; and providing a second thinning punch to continuously press the thinning area downwards, wherein a scratch-proof gap of 0.02-0.08mm exists between the edge of the second thinning punch and the side face of the step. The present application also includes a card holder manufactured using a metal area thinning process.
Description
Technical Field
The application relates to the field of metal processing, in particular to a method for thinning a metal plate regionally and a card holder manufactured by the method.
Background
An electronic card socket is matched with the inside of the intelligent mobile phone and used for inserting an SIM card and/or a TF card, and an electronic card support with an all-metal structure is generally matched on the current middle-high-end mobile phone brand along with the improvement of user experience requirements. The card support of all-metal structure has better feel and firmness, and is better matched with the electronic card seat.
The existing all-metal card holder is generally manufactured by a whole metal through CNC (computer numerical control), so that the manufacturing cost is high.
For products with higher precision requirements, multiple thinning processes are generally needed in the thinning process of a partial area of a metal plate to achieve the expected precision, and after the first thinning process is performed, when the thinning process is performed again, a thinning punch in the second thinning process is easy to scrape the side face of the step part of the product in the first thinning process to generate redundant metal scraps, so that a die is easy to damage, and the surface of the product is poor.
Disclosure of Invention
Therefore, it is necessary to provide a method for thinning a metal plate regionally and a card holder manufactured by the method, so as to solve the problem that metal chips are easily generated when the metal plate is thinned in the prior art.
In order to solve the technical problem, the application provides a method for regionally thinning a metal plate, which comprises the following steps:
s201, providing a metal plate and carrying out first stamping and thinning operation on the provided metal plate; the method comprises the following steps:
firstly fixing the base body part of the metal plate without being thinned, providing a first thinning punch to carry out first thinning on the area of the metal plate needing to be thinned, and forming a thinning area and a step at the joint of the thinning area and the base body part on the metal plate after the first thinning.
S202, carrying out secondary stamping and thinning on the metal plate which is subjected to the primary stamping and thinning;
and providing a second thinning punch to continuously press the thinning area downwards, wherein a scratch-proof gap of 0.02-0.08mm exists between the edge of the second thinning punch and the side face of the step.
According to the regional thinning method for the metal plate, a certain gap is designed between the second thinning punch and the step when the metal plate is thinned for the second time, so that the step can not be scraped by the second thinning punch when the metal plate is thinned for the second time, and the phenomenon that the die is damaged and a product is damaged due to generation of metal chips is avoided.
Preferably, the bottom surface of the second ironing punch is parallel to the horizontal plane.
Preferably, the scratch-resistant gap is 0.05 mm.
Preferably, the bottom surface of the first thinning punch forms an included angle of 0.5-2 degrees with the horizontal plane, and the opening of the included angle faces the outer side of the metal plate so as to facilitate the outward flow of metal in the extrusion process.
Preferably, the included angle is 1 degree.
Preferably, the base body portion is fixed by clamping the base and the material pressing block, the first stamping and thinning and the second stamping and thinning share one set of die, and only the first stamping and thinning punch and the second stamping and thinning punch need to be replaced.
In order to solve the technical problem, the present application further provides a card support manufactured by the above sheet metal regional thinning method, the card support includes a cover portion, a cover portion both sides are forward extended to form a first side portion, a second side portion, the front end is connected to the tail portion of the first side portion and the second side portion and a first card carrying space, the outer edges of the first side portion and the second side portion are passed through at the reverse side the stamping thinning process forming has a first sliding step and a second sliding step, the first side portion and the second side portion are located the inner edge of the first card carrying space is close to the tail portion position is adopted the stamping thinning process forming has a first position avoiding portion and a second position avoiding portion, the inner edges of the first side portion and the second side portion are openly located the first card carrying space and close to the cover portion one end is cut through the CNC machining process to form a first bearing portion and a second bearing portion.
Preferably, one end of the second side portion, which is close to the cover portion, extends into the first card loading space to form a protruding portion, the front surface of the inner edge of the protruding portion is located in the first card loading space, which is close to the cover portion, and the second bearing portion is formed by CNC machining, and the first bearing portion and the second bearing portion are used for bearing a SIM card or a TF card.
Preferably, the card holder further comprises a partition bar located between and connecting the first and second side portions, the partition bar divides the card holder into a first card loading space and a second card loading space, and the front surfaces of the inner edges of the first and second side portions are located at the second card loading space and are cut by a CNC machining process to form a third bearing and a fourth bearing.
Preferably, the first and second sliding steps at the outer edges of the first and second side portions extend in the plugging direction and penetrate through the periphery of the second card loading space, and the lengths of the first and second sliding steps in the plugging direction are different to prevent errors.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.
FIG. 1 is a reverse perspective view of a stamped blank of the card holder of the present application;
FIG. 2 is a front perspective view of a punched blank of the card holder of the present application;
FIG. 3 is a reverse side view of the semi-finished card holder of the present application after CNC finishing;
FIG. 4 is a front view of a semi-finished card holder of the present application after CNC finishing;
fig. 5 is a schematic view of a stamping process flow of the method for thinning a metal plate in a regional manner.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
Referring to fig. 1 to 4, the card holder of the present application includes a cover 10, a first side 20 and a second side 30 extending forward from two sides of the cover 10, a tail 40 connecting the first side 20 and the second side 30 at the front end, and a barrier 50 connecting the first side 20 and the second side 30 at the middle portion. The partition 50 divides the card holder into a first card carrying space 60 and a second card carrying space 70.
The first card loading space 60 is an alternative structure, and can be selectively loaded with a SIM card or a TF card, and the second card loading space 70 is a SIM card loading space.
The outer edge of the first side portion 20 is thinned at the reverse side to form a first sliding step 21. The outer edge of the second side portion 30 is thinned at the reverse side to form a second sliding step 31, and a concave portion 32 is further punched on the second sliding step portion 31. The lengths of the first sliding step 21 and the second sliding step 31 which are thinned in the plugging direction are different to form a misplug prevention structure.
The first side portion 20 is located at a position of the inner edge of the first card loading space 60 close to the second card loading space and is thinned by a stamping process to form a first clearance portion 22, and the second side portion 30 is located at a position of the inner edge of the first card loading space 60 close to the second card loading space and is thinned by a stamping process to form a second clearance portion 33. The first and second avoiding portions 22,33 keep the inner edges of the first and second side portions 20,30 in a straight line on the reverse side to avoid the internal guiding structure of the cassette, and the inner edges of the reverse side portions 20,30 extend backwards from the insertion end in a straight line so as not to form an obstruction.
The first avoiding portion 22 has no wall portion at both ends in the length direction, so that metal flow extrusion is easy during stamping and extrusion, and the metal flow extrusion can be thinned by a stamping process. Although the second stopper 33 has a wall portion at the rear end in the longitudinal direction, the width of the second stopper 33 is small, and the metal flow is easily extruded by a press process. The front surfaces of the first and second clearance portions 22 and 33 are used for limiting the TF card loaded in the first card loading space 60.
Referring to fig. 2 and 4, fig. 2 is a semi-finished punched card holder, and fig. 4 is a finished card holder after CNC (computer numerical control) finishing. The inner edge of the first side portion 20 is located at the first card carrying space 60 and is close to one end of the cover portion 10 to form a first carrying portion 25 by CNC machining, the second side portion 30 is close to one end of the cover portion and extends into the first card carrying space 60 to form a protruding portion 35, the inner edge of the protruding portion 35 is located at the first card carrying space 60 and is close to one end of the cover portion 10 to form a second carrying portion 351 by CNC machining, and the first carrying portion 25 and the second carrying portion 351 can be used for carrying SIM cards or TF cards.
The inner edge front faces of the first and second side portions 20,30 are located at the second card loading space 70 to form the third and fourth loading portions 24,34 for loading the SIM card by CNC processing. The cover part 10 is finished by CNC machining to obtain a finished product.
The card support is manufactured by adopting a stamping process except that the first bearing part, the second bearing part, the third bearing part and the fourth bearing part 25,351,24 and 34 and the cover part 10 are machined by adopting CNC, so that the CNC machining cost is greatly reduced.
The manufacturing method of the card support comprises the following steps:
s101, providing a metal plate, and stamping the metal plate to obtain a semi-finished card holder with an integral card holder frame structure;
this step is to stamp the cover blank, the first and second side portions 20,30, the first and second card-carrying spaces 60,70, the tail portion 40 and the partition 50 of the card holder. And the first and second avoiding portions 22,33 on the opposite sides of the inner edges of the first and second side portions 20,30 in the first card loading space 60 are thinned, and the first and second sliding steps 21,31 on the outer edges of the first and second side portions 20,30 are thinned.
S102, grinding the semi-finished card holder to remove burrs generated in a stamping process;
s103, carrying out CNC fine machining on the ground semi-finished product of the card holder;
in this step, the CNC machining is mainly to cut the front surfaces of the inner edges of the first and second side portions 20,30 at both sides of the first and second card loading spaces 60,70 to form the first and second bearing portions 25,351 and the third and fourth bearing portions 24, 34. While performing CNC finish machining on the cover portion 10 to remove the continuous material structure in the stamping process.
And S104, anodizing the CNC finished card support to obtain better appearance stability.
In the manufacturing method of the card holder, the frame structure of the card holder is firstly processed by a stamping process, and comprises all structures on the reverse sides of the first and second side parts 20 and 30 of the card holder, namely structures such as the first and second sliding steps 21 and 31 and the first and second avoiding parts 22 and 33. Finally, the CNC machining area is only left in the first bearing portion 25, the second bearing portion 351, the third bearing portion 24 and the fourth bearing portion 34 on the front surfaces of the first side portion 20 and the second side portion 30, so that the CNC machining cost is greatly reduced.
The card holder and the manufacturing method of the application are also suitable for manufacturing the card holder with the single card structure, for example, the second card carrying space 70 is removed, and only the first card carrying space 60 is needed.
Example 2
Referring to fig. 5, the present application further includes a method for thinning a metal plate in a region, which is suitable for thinning an outer portion of the metal plate, and is also suitable for thinning the first and second sliding steps 21,31 and the first and second positioning portions 22,33 of the card holder in embodiment 1.
The method for regionally thinning the metal plate area comprises the following steps:
s201, carrying out first stamping and thinning operation on the provided metal plate 80;
in the step, the area, which is not required to be thinned, of the metal plate 80 is fixed with the material pressing block 92 through the base 91, the first thinning punch 93 thins the area, which is required to be thinned, of the metal plate 80 for the first time, at this time, an included angle a (shown in the figure) of 0.5-2 degrees is designed between the bottom surface of the first thinning punch 93 and the horizontal plane, the included angle a is preferably 1 degree, and the opening of the included angle faces the outer side of the metal plate 80 so that metal can flow outwards in the extrusion process. The first thinning forms a step 83 at the junction of the thinned region 81 of the metal plate 80 and the base portion 82.
S202, carrying out secondary stamping and thinning on the metal plate 80 subjected to the primary stamping and thinning;
in this step, the base portion 82 of the metal plate 80, which does not need to be thinned, is fixed to the swaging block 92 through the base 91, and the second thinning punch 94 continues to press the thinning area 81 downward, at this time, a scratch-proof gap of 0.02 to 0.08mm, preferably 0.05mm, is designed between the edge of the second thinning punch 94 and the side surface of the step 83. By such design, when the second thinning punch 94 is pressed down, the second thinning punch does not scrape the side surface of the step 83 due to error, so that redundant metal chips are not generated, the die is damaged by the redundant metal chips, and the product cannot be discharged to damage the product, so that the defect is caused. The bottom surface of the second ironing punch 94 is parallel to the horizontal plane.
In step S201 and step S202, the same set of mold can be used, and the positioning error caused by product variation can be avoided by only replacing the first and second ironing punches 93 and 94.
According to the regional thinning method for the metal plate, a certain gap is designed between the second thinning punch 94 and the step 83 during the second thinning, so that the step 83 cannot be scraped by the second thinning punch 94 during the second thinning, and the phenomenon that a die is damaged and a product is damaged due to generation of metal chips is avoided.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (7)
1. A method of regionally ironing a metal sheet, comprising:
s201, providing a metal plate and carrying out first stamping and thinning operation on the provided metal plate; the method comprises the following steps:
firstly fixing the base body part of the metal plate, which does not need to be thinned, providing a first thinning punch to carry out first thinning on the area of the metal plate, and forming a thinning area and a step at the joint of the thinning area and the base body part on the metal plate after the first thinning;
s202, carrying out secondary stamping and thinning on the metal plate which is subjected to the primary stamping and thinning;
providing a second thinning punch to continuously press the thinning area downwards, wherein a scratch-proof gap of 0.02-0.08mm exists between the edge of the second thinning punch and the side face of the step;
the bottom surface of the first thinning punch and a horizontal plane are designed to form an included angle of 0.5-2 degrees, and an opening of the included angle faces the outer side of the metal plate so as to facilitate the outward flow of metal in the extrusion process;
the bottom surface of the second thinning punch is parallel to the horizontal plane;
the base body portion is fixed through clamping and fixing of the base and the material pressing block, the first stamping thinning and the second stamping thinning share one set of die, and only the first stamping thinning punch and the second stamping thinning punch need to be replaced.
2. A method of regionally thinning a metal sheet according to claim 1, wherein the scratch gap is 0.05 mm.
3. The method of regionally ironing a metal sheet according to claim 1, wherein the included angle is 1 degree.
4. A card holder manufactured by adopting the regional thinning method of the metal sheet material according to any one of claims 1 to 3, characterized in that the card holder comprises a cover part, a first side part and a second side part which are formed by extending forwards from two sides of the cover part, a tail part which is connected with the first side part and the second side part at the front end, and a first card carrying space, wherein the outer edges of the first side part and the second side part are provided with a first sliding step and a second sliding step by the stamping and thinning process at the back surfaces, the first side part and the second side part are provided with a first position retaining part and a second position retaining part by the stamping and thinning process at the positions of the inner edges of the first card carrying space close to the tail part, and the front surfaces of the inner edges of the first side part and the second side part are provided at one end of the first card carrying space close to the cover part and are cut by the numerical control processing process to form a first.
5. The card holder as claimed in claim 4, wherein the second side portion is formed with a protrusion extending into the first card-loading space near one end of the cover portion, the protrusion has an inner edge front surface located at one end of the first card-loading space near the cover portion, and the second carrying portion is formed by numerical control machining, and the first carrying portion and the second carrying portion are used for carrying a SIM card or a TF card.
6. The card holder of claim 5, further comprising a partition disposed between and connecting the first and second side portions, wherein the partition divides the card holder into a first card loading space and a second card loading space, and the front surfaces of the inner edges of the first and second side portions are disposed at the second card loading space and are cut by a numerical control machining process to form a third bearing portion and a fourth bearing portion.
7. The card holder of claim 6, wherein the first and second sliding steps of the first and second side edges extend in the insertion and extraction direction and penetrate the periphery of the second card-carrying space, and the lengths of the first and second sliding steps in the insertion and extraction direction are different to prevent erroneous insertion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189942.7A CN108515100B (en) | 2018-03-08 | 2018-03-08 | Method for regionally thinning metal plate and card holder manufactured by method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189942.7A CN108515100B (en) | 2018-03-08 | 2018-03-08 | Method for regionally thinning metal plate and card holder manufactured by method |
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| CN108515100A CN108515100A (en) | 2018-09-11 |
| CN108515100B true CN108515100B (en) | 2020-08-25 |
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| CN109746318B (en) * | 2019-01-22 | 2020-08-21 | 浙江锦泰电子有限公司 | Method for manufacturing explosion-proof sheet |
| CN112317610B (en) * | 2020-09-15 | 2022-11-11 | 深圳市信维通信股份有限公司 | Sheet metal forging and thinning process |
| CN113102623B (en) * | 2021-03-31 | 2022-10-25 | 联想(北京)有限公司 | Shell machining method, shell and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3771366B2 (en) * | 1998-01-12 | 2006-04-26 | 三菱電線工業株式会社 | Sealed battery |
| CN201921948U (en) * | 2010-12-23 | 2011-08-10 | 捷荣模具工业(东莞)有限公司 | Metal stamping structure free from cutting or corrosion machining |
| CN102847785A (en) * | 2011-06-29 | 2013-01-02 | 英业达股份有限公司 | One-step press forming process and manufacturing method of CPU (Central Processing Unit) back board |
| CN203664484U (en) * | 2013-11-25 | 2014-06-25 | 天津市津荣天宇精密机械有限公司 | Punch structure of punching die for pressing and thinning hard materials inside die |
| CN103730744B (en) * | 2013-12-27 | 2016-04-13 | 深圳君泽电子有限公司 | Combined card connector and mobile phone |
| CN105834678A (en) * | 2015-04-22 | 2016-08-10 | 维沃移动通信有限公司 | Manufacture method of structural member |
| CN205129191U (en) * | 2015-11-09 | 2016-04-06 | 东风汽车公司 | Stability of uniform thickness laser welding board weld quality not is improved rolling wheel mechanism |
| CN205165574U (en) * | 2015-11-30 | 2016-04-20 | 上海钜祥精密模具有限公司 | Thin mould is pressed to product |
| CN107639389B (en) * | 2017-09-07 | 2019-08-20 | 艾柯豪博（苏州）电子有限公司 | A kind of connector and its manufacturing process using differential hardening technique |
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