CN107683056B

CN107683056B - Electronic product component and manufacturing method thereof

Info

Publication number: CN107683056B
Application number: CN201710780785.2A
Authority: CN
Inventors: 王理栋; 王理磊; 蔡杰成; 张科; 李朦; 伍新城; 唐斌
Original assignee: Guangdong Evenwin Precision Technology Co Ltd
Current assignee: Guangdong Evenwin Precision Technology Co Ltd
Priority date: 2017-09-01
Filing date: 2017-09-01
Publication date: 2020-08-18
Anticipated expiration: 2037-09-01
Also published as: CN107683056A

Abstract

The invention relates to an electronic product component and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: providing a flitch, wherein the flitch comprises a first metal layer and a second metal layer which are combined with each other, the first metal layer is positioned below the second metal layer, and the hardness of the first metal layer is greater than that of the second metal layer; a plurality of projections for forming the material plate at intervals; polishing the surfaces of the plurality of protrusions; performing numerical control machining on the plurality of polished protrusions to enable the profiles of the plurality of protrusions to meet the standard; and enabling the plurality of protruding parts or the metal layers in the corresponding areas below the protruding parts to fall off from the flitch to obtain a plurality of electronic product components. According to the manufacturing method of the electronic product component, the traditional single material is replaced by the two layers of metal materials with different hardness, the manufacturing method has the advantages of being high in strength, light in weight, easy to form and stable in processing, numerical control processing efficiency is greatly improved, and overall processing cost is greatly reduced.

Description

Electronic product component and manufacturing method thereof

Technical Field

The invention relates to the technical field of machining, in particular to an electronic product part and a manufacturing method thereof.

Background

Nowadays, more and more electronic product casings are made of metal materials, for example, mobile phone casings made of aluminum alloy materials and magnesium alloy materials are adopted, and the requirements on the processing quality of electronic product parts are also higher and higher. In the process of processing and manufacturing electronic product components made of traditional materials, the surface texture and hardness are poor, and the surface is easy to be scratched.

Disclosure of Invention

Accordingly, there is a need for an electronic component with high processing efficiency, low cost and good processing effect and a method for manufacturing the same.

A method of making an electronic component comprising the steps of:

providing a flitch, wherein the flitch comprises a first metal layer and a second metal layer which are combined with each other, the first metal layer is positioned below the second metal layer, and the hardness of the first metal layer is greater than that of the second metal layer;

removing the first metal layer and part of the second metal layer on a partial area of the flitch to form a plurality of spaced protrusions on the flitch;

polishing the surfaces of the plurality of protrusions;

performing numerical control machining on the plurality of polished protrusions to enable the profiles of the plurality of protrusions to meet the standard;

and enabling the plurality of protruding parts or the metal layers in the corresponding areas below the protruding parts to fall off from the flitch to obtain a plurality of electronic product components.

In one embodiment, the polishing process is to polish the top surface of the first metal layer of each protrusion, and the polishing process can exhibit a mirror effect.

In one embodiment, the polishing process is followed by a painting process for the plurality of protrusions, and a UV paint layer is formed on the surface of the plurality of protrusions.

In one embodiment, the UV paint layer on the surfaces of the plurality of protruding parts is removed after the plurality of protruding parts are subjected to numerical control machining.

In one embodiment, the plurality of protrusions after the UV paint layer is removed are subjected to physical vapor deposition to form a physical vapor deposition layer on the surfaces of the plurality of protrusions.

In one embodiment, the plurality of protrusions having the physical vapor deposition layer formed thereon are subjected to an anti-fingerprint process.

In one embodiment, the flitch is provided with a plurality of protrusions and grooves, the protrusions are located in the grooves, and the grooves are divided into a plurality of processing areas by division bars.

In one embodiment, the thickness of the first metal layer is less than the thickness of the second metal layer.

In one embodiment, the first metal layer is a stainless steel layer, and the second metal layer is an aluminum layer, an aluminum alloy layer, a magnesium layer, or a magnesium alloy layer.

An electronic product component is manufactured by the manufacturing method of the electronic product component, and the electronic product component is an electronic product identifier, a key or a card holder.

According to the manufacturing method of the electronic product component, the traditional single material is replaced by the two layers of metal materials with different hardness, the manufacturing method has the advantages of being high in strength, light in weight, easy to form and stable in processing, numerical control processing efficiency is greatly improved, and overall processing cost is greatly reduced.

According to the manufacturing method of the electronic product component, the surface layer is made of the stainless steel metal material, and a mirror polishing effect can be formed after polishing treatment, so that the processing requirement is effectively met.

Drawings

FIG. 1 is a block flow diagram of a method for manufacturing an electronic component, according to an embodiment;

FIG. 2 is a schematic perspective view of a flitch provided by an embodiment;

FIG. 3 is a schematic view of a three-dimensional structure of the flitch shown in FIG. 2 after being processed by numerical control;

FIG. 4 is a side cross-sectional structural view of the painted projections;

FIG. 5 is a schematic structural diagram of a cutter for machining a first metal layer at a certain position of a protrusion in numerical control machining;

FIG. 6 is a schematic structural diagram of a cutter for machining a second metal layer at a certain position of a protrusion in numerical control machining;

FIG. 7 is a schematic perspective view of the plurality of projections after being disengaged from the flitch;

FIG. 8 is an enlarged schematic view of the indicia;

fig. 9 is a schematic perspective view of a material plate after being processed by numerical control according to an embodiment;

FIG. 10 is a schematic perspective view of the plurality of projections shown in FIG. 9 after they have been disengaged from the flitch;

FIG. 11 is an enlarged view of the key;

FIG. 12 is a schematic view of a three-dimensional structure of a strip-shaped plate after numerical control processing;

FIG. 13 is an enlarged view of portion A of FIG. 12;

fig. 14 is an enlarged view of the plurality of protrusions of fig. 12 after they have been disengaged from the strip.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 2 to fig. 7, a method for manufacturing an electronic product component according to an embodiment includes the following steps:

step S100, providing the flitch 10. As shown in fig. 2 to 5, the flitch 10 includes a first metal layer 11 and a second metal layer 12 which are combined with each other, the first metal layer 11 is located on the second metal layer 12, and the hardness of the first metal layer 11 is greater than that of the second metal layer 12. The flitch 10 is rectangular as a whole, the thickness of the first metal layer 11 is smaller than that of the second metal layer 12, the first metal layer 11 can be but is not limited to a stainless steel layer, and the second metal layer 12 is an aluminum layer, an aluminum alloy layer, a magnesium layer or a magnesium alloy layer. In one embodiment, the first metal layer 11 is a stainless steel layer, the second metal layer 12 is an aluminum layer, and the thickness ratio of the first metal layer 11 to the second metal layer 12 is 1:2 to 1: 10.

Step S200 is to remove the first metal layer 11 and a part of the second metal layer 12 on a partial region of the flitch 10 so that a plurality of protrusions are formed on the flitch 10 at intervals. As shown in fig. 3, the material plate 10 is processed by CNC, a groove 110 is processed on the material plate 10, the plurality of protrusions are located in the groove 110, one or more division bars 130 are further formed in the groove 110, so that a plurality of processing areas are formed in the groove 110, and the division bars 130 can also play a role in enhancing the structural strength of the material plate 10.

Step S300, polishing treatment is carried out on the surfaces of the plurality of protruding parts. The top surface (i.e., appearance surface) of the first metal layer 11 of each protrusion is polished to form a mirror surface effect after polishing treatment, thereby achieving the appearance requirement. In one embodiment, a plurality of plates 10 are fixed to a surface grinder, and the first metal layers 11 of the respective protrusions on the respective plates 10 are finely ground using a scouring pad and a polishing liquid, so that the surfaces of the first metal layers 11 are mirror-finished.

Step S400, performing numerical control processing on the plurality of polished protrusions so that the contours of the plurality of protrusions 200 all conform to a standard. That is, at the beginning of machining, a plurality of bosses having the same shape are formed in the groove 110, the numerical control machining after the polishing process is a finish machining, and the cutter mills different portions of the bosses to form the same contour as the protruding portion of the standard product.

The first metal layer 11 of the protrusion may be numerically controlled using a cemented carbide tool 210, and the second metal layer 12 may be numerically controlled using, for example, a tungsten steel tool 220, so that the protrusion 200 has the same profile as a standard product. Because the protruding part is provided with two metal layers with different hardness, the time of numerical control processing can be saved by 25-30% compared with the time of numerical control processing of traditional materials, and the service life of the processing cutter can be prolonged by about 40%.

Step S500 is to detach the plurality of protrusions 200 and the metal layer in the corresponding region below each protrusion 200 from the material plate 10, or to detach the plurality of protrusions 200 from the metal substrate, thereby obtaining a plurality of electronic product components 20. As shown in fig. 7, the operation can be completed in a punching machine by using a punching single-punch die, the punching blanking of a single material plate 10 can be completed in only ten seconds, and the punching blanking of a plurality of finished products can be completed at one time. The grain of flitch 10 extends along the horizontal direction, can make flitch 10 not damaged in the numerical control processing.

Because flitch 10 has the structure of two-layer metal level, and the hardness of the metal level of top layer is greater than the hardness of the metal level of bottom, makes the product not only have high strength property, still has the advantage of lightweight, easy shaping, processing stability, can satisfy the processing demand of quick processing demand and product to the outward appearance, and numerical control process time significantly reduces, and the cutter life-span also improves greatly, can accomplish the processing of a plurality of electronic product parts 20 once, cost greatly reduced.

After the bump polishing process, the method further includes step S310: the plurality of projections on the material plate 10 are subjected to painting treatment, and the UV paint layer 13 is formed on the surfaces of the plurality of projections after the painting treatment. The UV paint is uniformly sprayed on the ground polished surface (the surface of the first metal layer 11 of the protruding part) through a paint spraying process, is instantly cured to form a film under the irradiation of ultraviolet light, and plays a role in protecting the polished surface after the paint spraying treatment. After the numerical control machining is performed on the plurality of protrusions, the method further includes step S410: the UV varnish layer 13 on the surface of the plurality of protrusions 200 is removed after the plurality of protrusions 200 are subjected to numerical control machining.

The method further includes, for the plurality of protruding portions after removing the UV paint layer 13, step S420: forming a physical vapor deposition layer on the surfaces of the plurality of protrusions by physical vapor deposition. Physical vapor deposition, also called pvd (physical vapor deposition), refers to a process of evaporating a target material and ionizing both the evaporated material and gas by using a low-voltage and high-current arc discharge technique under vacuum conditions, and depositing the evaporated material and a reaction product thereof on a workpiece by using acceleration of an electric field.

After the physical vapor deposition treatment is performed on the surfaces of the plurality of protrusions, the method further includes step S430: the plurality of protrusions are subjected to anti-fingerprint treatment, so that the protrusions have good anti-fingerprint performance.

Taking the specific product processing as an example, in the following embodiments, the first metal layer of the flitch is a stainless steel layer, and the second metal layer is an aluminum layer, that is, the flitch is made of a steel-aluminum composite material:

the first embodiment is as follows:

the electronic product part is sign 20(Logo), flitch 10 is the rectangle, and thickness is 1.2mm, and flitch 10 opposite angle has seted up locating hole 120 respectively, and stainless steel layer 11 thickness is 0.3mm, and aluminium lamination 12 thickness is 0.9 mm.

And (3) embryonic form processing: machining a groove 110 in the material plate 10, forming a division bar 130 in the groove 110, dividing the groove 110 into two machining areas, machining a row of uniformly spaced protrusions in each machining area, and forming 6 protrusions in each machining area, wherein the grooves 110 have 12 protrusions in total.

Fine grinding: the plurality of plates 10 are fixed to a surface grinder, and the stainless steel layers 11 of the respective protrusions of the respective plates 10 are finely ground using a scouring pad and a grinding liquid, so that the surfaces of the stainless steel layers 11 have a mirror surface effect.

And (3) spray painting treatment: and (3) respectively performing paint spraying treatment on the protrusions on each material plate 10, forming a UV paint layer 13 on the stainless steel surface of each protrusion, and finishing the paint spraying treatment on the surface of the stainless steel layer 11 on one material plate 10 within 30 seconds.

Numerical control machining: the protrusions on each flitch 10 are respectively processed by numerical control, so that the outline of the protrusion 200 meets the requirements of standard products. Carrying out numerical control machining on the stainless steel layer 11 by using a coated tungsten steel cutter 210, wherein the rotating speed S of a main shaft of a numerical control machine tool is 12000, the moving speed F of the cutter is 800, the machining feed Z is 0.008mm, and the machining time is 160/S; and carrying out numerical control machining on the aluminum layer 12 by using a tungsten steel cutter 210, wherein the rotating speed S of a main shaft of the numerical control machine tool is 15000, the moving speed F of the cutter is 1500, the machining feed Z is 0.03mm, and the machining time is 100/S.

And (3) paint removal treatment: after the numerical control machining is completed, the UV paint layer 13 on the surface of the stainless steel layer 11 of each protrusion 200 is removed.

PVD treatment: forming a physical vapor deposition layer on the surface of the stainless steel layer 11 of each protrusion part by a physical vapor deposition method.

Fingerprint prevention treatment: the plurality of protrusions are anti-fingerprinted.

Punching and blanking: the material plate 10 is placed and fixed in a punching machine through the two positioning holes 120 for punching, and the plurality of protrusions fall off from the material plate 10 together with the aluminum layer 12 in the corresponding area below, so that a plurality of marks 20 are obtained.

Table one is the parameter contrast of marking processing for the flitch 10 that adopts the simple stainless steel of traditional material, the flitch of simple aluminium material and the compound material of adoption steel aluminium:

watch 1

From the table above, can see that, the flitch 10 that adopts steel aluminium composite material carries out the processing of sign 20, and the time of CNC processing shortens greatly, and the surface energy of stainless steel layer 11 forms the mirror surface effect, and the finished product after the processing also is better than the off-the-shelf performance of the flitch 10 that the tradition adopted single material, can greatly reduced processing cost when guaranteeing the yield

Example two:

referring to fig. 2, 9 to 11, the electronic component is a key 30, the material plate 10 is rectangular and 1.5mm thick, the opposite corners of the material plate 10 are respectively provided with positioning holes 120, the stainless steel layer 11 is 0.2mm thick, and the aluminum layer 12 is 1.3mm thick.

And (3) embryonic form processing: machining grooves 110 in the material plate 10, wherein 2 partition bars 130 are formed in the grooves 110, the grooves 110 are divided into 3 machining areas, a row of uniformly spaced protrusions are machined in each machining area, each machining area has 10 protrusions, and the total number of the protrusions in the grooves 110 is 30.

And (3) spray painting treatment: and (3) respectively spraying paint on the protrusions of each material plate 10 to form a UV paint layer on the stainless steel surface of each protrusion, so that the paint spraying treatment on the surface of the stainless steel layer 11 on one material plate 10 can be completed within 30 seconds.

Numerical control machining: the plurality of protrusions on each flitch 10 are respectively processed by numerical control, so that the outline of the protrusion 300 meets the requirements of standard products. Carrying out numerical control machining on the stainless steel layer 11 by using a coated tungsten steel cutter, wherein the rotating speed S of a main shaft of the numerical control machine tool is 8000, the moving speed F of the cutter is 800, the machining feed Z is 0.2mm, and the machining time is 90/S; and carrying out numerical control machining on the aluminum layer 12 by using a tungsten steel cutter, wherein the rotating speed S of a main shaft of the numerical control machine tool is 12000, the moving speed F of the cutter is 10000, the machining feed Z is 1mm, and the machining time is 60/S.

And (3) paint removal treatment: and removing the UV paint layer on the surface of the stainless steel layer 11 of each protruding part 300 after the numerical control machining is finished.

Punching and blanking: each of the plates 10 is fixed to a punching machine through the two positioning holes 120 for punching, and the plurality of projections come off from the plate 10 together with the aluminum layer 12 in the corresponding area below, thereby obtaining a plurality of keys 30.

Table two is the parameter contrast that the flitch 10 that adopts the pure stainless steel of traditional material, the flitch of pure aluminium material and the compound material of adoption steel aluminium carries out button 30 processing:

watch two

From the table above, adopt flitch 10 of the compound material of steel aluminium to carry out the processing of button 30, the time of CNC processing shortens greatly, and the surface energy of stainless steel layer 11 forms the mirror surface effect, and the finished product after the processing also adopts the off-the-shelf performance of flitch 10 of single material better than the tradition, can greatly reduced processing cost when guaranteeing the yield.

Example three:

referring to fig. 2, 12 to 14, the electronic component is the card holder 40, the material plate 10 is rectangular and 10.3mm thick, the opposite corners of the material plate 10 are respectively provided with positioning holes 410, the stainless steel layer 11 is 0.3mm thick, and the aluminum layer 12 is 10mm thick.

And (3) embryonic form processing: processing a plurality of rows of protrusions on the material plate 10, wherein each row of protrusions has 6 spaced protrusions, cutting the material plate 10 into a plurality of strip-shaped plates 41, each strip-shaped plate 41 having a row of protrusions, and positioning holes 410 being respectively disposed at two opposite ends of each strip-shaped plate 41.

Fine grinding: the plurality of strip-shaped plates 41 are fixed to a surface grinder, and the stainless steel layers 11 of the respective protrusions of the respective plates 10 are finely ground with a scouring pad and a polishing liquid, so that the surfaces of the stainless steel layers 11 have a mirror surface effect.

And (3) spray painting treatment: the projections of each strip 41 were painted, and a UV paint layer was formed on the stainless steel surface of each projection, and the painting of the surface of the stainless steel layer 11 of one strip 41 was completed within 30 seconds.

Numerical control machining: the protrusions on each strip 41 are numerically controlled to make the contour of the protrusion 400 meet the requirements of a standard product, and during the processing, the side of the strip 41 is milled and drilled to form two support legs 420 at the bottom of the finished product after stamping. Carrying out numerical control machining on the stainless steel layer 11 by using a coated tungsten steel cutter, wherein the rotating speed S of a main shaft of the numerical control machine tool is 8000, the moving speed F of the cutter is 800, the machining feed amount Z is 0.1mm, and the machining time is 80/S; the aluminum layer 12 is subjected to numerical control machining by adopting a tungsten steel cutter, the rotating speed S of a main shaft of the numerical control machine tool is 10000, the moving speed F of the cutter is 9000, the machining feed amount is Z0.5 mm, and the machining time is 60/S.

And (3) paint removal treatment: and removing the UV paint layer on the surface of the stainless steel layer 11 of each protrusion part 400 after finishing numerical control machining.

Punching and blanking: each strip-shaped plate 41 is placed and fixed in the punching machine through the two positioning holes 410, one surface of the strip-shaped plate 41 having the protruding portion is vertically placed, and after punching, a plurality of card holders 40 are obtained.

The third table is used for comparing parameters of clamping and supporting 40 processing of the material plate made of traditional pure stainless steel, the material plate made of pure aluminum and the material plate 10 made of steel-aluminum composite material:

watch III

From the table above, adopt flitch 10 of the compound material of steel aluminium to carry out the processing that the card held in the palm 40, the time of CNC processing shortens greatly, and the surface energy of stainless steel layer 11 forms the mirror surface effect, and the finished product after the processing also is better than the off-the-shelf performance of the flitch 10 that the tradition adopted single material, can greatly reduced processing cost when guaranteeing the yield.

An embodiment of the present invention further provides an electronic product component, which is manufactured by the manufacturing method of the electronic product component according to the embodiment, and the electronic product component is any one of an electronic product identifier, a key and a card holder.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method of making an electronic component, comprising the steps of:

providing a flitch, wherein the flitch comprises a first metal layer and a second metal layer which are combined with each other, the first metal layer is positioned on the second metal layer, and the hardness of the first metal layer is greater than that of the second metal layer;

removing the first metal layer and part of the second metal layer on a partial area of the flitch to form a plurality of spaced protrusions on the flitch, wherein the protrusions comprise the second metal layer and the first metal layer positioned above the second metal layer;

polishing the surfaces of the plurality of protrusions;

2. The method of claim 1, wherein the polishing is performed on the top surface of the first metal layer of each protrusion, and the polishing exhibits a mirror effect.

3. The method of manufacturing an electronic component according to claim 1, wherein the polishing is followed by a painting process of the plurality of protruding portions, and a UV paint layer is formed on surfaces of the plurality of protruding portions.

4. The method of claim 3, wherein the UV paint layer on the surface of the plurality of protrusions is removed after the plurality of protrusions are digitally controlled.

5. The method for manufacturing electronic product parts according to claim 4, wherein the physical vapor deposition layer is formed on the surfaces of the plurality of protruding portions after the UV paint layer is removed by physical vapor deposition.

6. The method of manufacturing an electronic product component according to claim 5, wherein the plurality of protrusions having the physical vapor deposition layer formed on the surface thereof are subjected to an anti-fingerprint treatment.

7. The method as claimed in claim 1, wherein the material plate is formed with a plurality of protrusions and grooves, the protrusions are located in the grooves, and the grooves are partitioned into a plurality of processing regions by partitions.

8. The method of claim 1, wherein the first metal layer has a thickness less than a thickness of the second metal layer.

9. The method of claim 1, wherein the first metal layer is a stainless steel layer and the second metal layer is an aluminum layer, an aluminum alloy layer, a magnesium layer, or a magnesium alloy layer.

10. An electronic product component, characterized in that, it is made by the method of any one of claims 1 to 9, the electronic product component is a logo, a key or a card holder.