Method for processing a composite metal frame, composite metal frame, and electronic device

Abstract

This invention provides a method for processing a composite metal frame, a composite metal frame, and an electronic device. The processing method includes: providing a metal composite substrate, the metal composite substrate including a first metal layer and a second metal layer stacked together; forming deposition holes from the surface of the first metal layer into the interior of the metal composite substrate; depositing molten filler metal in the deposition holes and solidifying it to form a filler; removing a portion of the filler and the second metal layer corresponding to the filler to form a mounting hole, the second metal layer and the filler being exposed from the inner wall of the mounting hole. The above processing method allows the filler to fit tightly against the junction of the first metal layer and the second metal layer, resulting in better uniformity at the junction of the first metal layer and the second metal layer, thereby improving the quality of the composite metal frame.

Description

[Technical Field]

[0001] This invention relates to the field of metal processing technology, and specifically to a processing method for a composite metal frame, a composite metal frame, and an electronic device. [Previous Technology]

[0002] When two metal materials are laminated and joined by thermoforming drilling, a deposition hole is usually first machined on the inner metal material. Then, a tool with a sharp angle is used to rotate at high speed on the surface of the outer metal material and press it from the outer metal material towards the inner metal material. The outer metal material is melted under high temperature and high frequency to form a thermoforming hole that connects to the deposition hole. The sidewall of the thermoforming hole is formed by the molten metal material and adheres to at least part of the sidewall of the deposition hole. However, due to the uneven release of processing stress on the outer metal material during thermoforming drilling, problems such as cracking or missing parts of the sidewall of the formed thermoforming hole occur, resulting in poor uniformity of the two metal materials at the joint and lower quality of the resulting composite metal frame. [Summary of the Invention]

[0003] In view of the above, it is necessary to provide a processing method for composite metal frames, composite metal frames and electronic devices, so as to improve the quality of composite metal frames.

[0004] To achieve the above objective, in a first aspect, the present invention discloses a method for processing a composite metal frame, comprising: providing a metal composite substrate, the metal composite substrate comprising a first metal layer and a second metal layer stacked together; forming a deposition hole from the surface of the first metal layer into the interior of the metal composite substrate, the deposition hole comprising a main hole segment and a receiving hole segment connected to each other, the main hole segment being located on one side of the first metal layer, the receiving hole segment being at least partially received within the second metal layer, and the diameter of at least a portion of the receiving hole segment being larger than the diameter of the main hole segment; depositing molten filler metal in the deposition hole and solidifying it to form a filler body, such that the filler body is tightly fitted to the inner wall of the main hole segment; removing a portion of the filler body and the second metal layer corresponding to the filler body to form a mounting hole, the second metal layer and the filler body being exposed from the inner wall of the mounting hole.

[0005] In a second aspect, the present invention discloses a composite metal frame, comprising a first metal layer and a second metal layer stacked together. The composite metal frame further includes deposition holes, which are formed from the surface of the first metal layer into the interior of the metal composite substrate. Each deposition hole includes a main hole segment and a receiving hole segment connected to each other. The main hole segment is located on one side of the first metal layer, and the receiving hole segment is at least partially received into the second metal layer. The diameter of at least a portion of the receiving hole segment is larger than the diameter of the main hole segment. A filler is tightly fitted to the inner wall of the deposition hole. An installation hole is formed in the filler and the second metal layer corresponding to the filler. The second metal layer and the filler are exposed on the inner wall of the installation hole.

[0006] In a third aspect, the present invention discloses an electronic device including a composite metal frame as described in the second aspect above.

[0007] Using the above technical solution, in actual use, a deposition hole is first formed from the surface of the first metal layer into the interior of the metal composite substrate. The deposition hole includes a main hole segment and a receiving hole segment connected to each other. The main hole segment is located on one side of the first metal layer, and the receiving hole segment is at least partially received into the second metal layer. The diameter of the at least partially receiving hole segment is larger than the diameter of the main hole segment. Then, molten filler metal is deposited in the deposition hole and solidified to form a filler, so that the filler is tightly attached to the inner wall of the main hole segment. Finally, part of the filler and the second metal layer corresponding to the filler are removed to form a mounting hole. The second metal layer and the filler are exposed from the inner wall of the mounting hole. Since the diameter of at least partially receiving hole segment is larger than the diameter of the main hole segment, the molten filler metal can fill the deposition hole to form a filler, reducing the CNC machining sidewall cracking caused by incomplete filling. Furthermore, since the second metal layer and the filler are exposed from the inner wall of the mounting hole, the filler can tightly attach to the connection between the first metal layer and the second metal layer. The uniformity of the connection between the first metal layer and the second metal layer is better, thereby improving the quality of the composite metal frame.

Implementation Method

[0031] Embodiments of the present invention will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In a first aspect, please refer to Figure 1. This invention discloses a processing method for a composite metal frame 700 (as shown in Figure 5), comprising:

[0033] S10, please refer to Figure 2, a metal composite substrate 100 is provided, the metal composite substrate 100 includes a first metal layer 10 and a second metal layer 20 stacked together.

[0034] The material of the first metal layer 10 includes an aluminum alloy, and the material of the second metal layer 20 includes titanium or a titanium alloy. It is understood that in other embodiments, the first metal layer 10 and the second metal layer 20 may also be other metals; no specific limitation is made here. The hardness of the metal forming the first metal layer 10 is less than the hardness of the metal forming the second metal layer 20, and the second metal layer 20 has stronger chemical stability than the first metal layer 10.

[0035] S20, please refer to FIG3, a deposition hole 30 is formed from the surface of the first metal layer 10 into the interior of the metal composite substrate 100. The deposition hole 30 includes a main hole segment 31 and a receiving hole segment 32 connected to each other. The main hole segment 31 is located on one side of the first metal layer 10, and the receiving hole segment 32 is at least partially received into the second metal layer 20. The diameter of the at least partially receiving hole segment 32 is larger than the diameter of the main hole segment 31.

[0036] Among them, the deposition pore 30 is roughly T-shaped.

[0037] S30, please refer to Figure 4, deposit molten filler metal in the deposition hole 30 and solidify it to form filler 40, so that filler 40 fits tightly against the inner wall of the main hole segment 31.

[0038] The material of the filler metal can be the same as that of the second metal layer 20, that is, the material of the filler metal is titanium or titanium alloy.

[0039] S40, please refer to Figure 5, remove part of the filler 40 and the second metal layer 20 corresponding to the filler 40 to form a mounting hole 41, and the second metal layer 20 and the filler 40 are exposed from the inner wall of the mounting hole 41.

[0040] In the above-mentioned processing method of composite metal frame 700, since the aperture of at least part of the receiving hole segment 32 is larger than the aperture of the main hole segment 31, the molten filler metal can fill the main hole segment 31 of the deposition hole 30 to form a filler 40, reducing the CNC machining sidewall cracking caused by insufficient filling. Furthermore, the second metal layer 20 and the filler 40 are exposed from the inner wall of the mounting hole 41, and the filler 40 can closely fit the connection between the first metal layer 10 and the second metal layer 20. The uniformity of the connection between the first metal layer 10 and the second metal layer 20 is better, thereby improving the quality of the composite metal frame 700.

[0041] As an optional implementation, please refer to FIG6, the step of forming the deposition hole 30 from the surface of the first metal layer 10 into the interior of the metal composite substrate includes:

[0042] S21, using a first tool to make a hole in the first metal layer 10 into the second metal layer 20 to form the main hole segment 31.

[0043] S22, using a second tool to drill from the bottom of the main body hole section 31 toward the second metal layer 20 to form a receiving hole section 32, the receiving hole section 32 extending into the second metal layer 20.

[0044] The first tool and the second tool are both milling cutters. The first tool and the second tool work together to process the deposition hole 30 of the required size.

[0045] In some embodiments, after the accommodating hole segment 32 is machined, a third tool can be used to finish mill the inner wall of the main hole segment 31 so that the filler 40 fits tightly against the inner wall of the main hole segment 31.

[0046] As an optional embodiment, the diameter of the receiving hole section 32 increases from the end connected to the main hole section 31 to the end away from the main hole section 31. In this way, it can be ensured that the bottom corner of the main hole section 31 is properly cleared, preventing residue from the bottom of the machining process, which could affect the flow of molten filler metal or cause uneven filling.

[0047] The diameter of the receiving hole section 32 may gradually increase from the end connected to the main hole section 31 to the end away from the main hole section 31, or it may increase first and then decrease, wherein the diameter of the receiving hole section 32 after the diameter decreases is larger than the diameter of the main hole section 31.

[0048] The aperture of the main hole segment 31 is in the range of 2mm-4mm. If the aperture of the main hole segment 31 is less than 2mm, the laser will be misaligned and may burn the hole wall of the main hole segment 31. If the aperture of the main hole segment 31 is greater than 4mm, the filler metal wire will be wasted and more energy will be needed to melt the filler metal wire. In addition, due to the large volume, the molten filler metal is difficult to solidify evenly and may cause quality problems.

[0049] As an optional implementation, please refer to FIG7, the step of depositing molten filler metal in the deposition hole 30 and solidifying it to form the filler 40 includes:

[0050] S31, please refer to Figure 8, insert the filler wire 200 into the deposition hole 30, and make the filler wire 200 and the deposition hole 30 coaxial.

[0051] S32, the filler wire 200 is irradiated by a laser 300 with the spot 310 coinciding with the center of the deposition hole 30, so that the filler wire 200 melts and fills the deposition hole 30 to form a filler 40.

[0052] The filler wire 200 can be produced by a wire extruder (not shown). The coaxiality of the filler wire 200 and the deposition hole 30 ensures the precise positioning of the filler wire 200 within the deposition hole 30, so that the energy of the laser 300 can be concentrated on the tip of the filler wire 200, thereby achieving precise control of the molten metal filling. The laser 300 irradiation can make the filler wire 200 melt rapidly, reduce the heat-affected zone, thereby improving the quality and structural integrity of the filler 40. Furthermore, the laser 300 melting filling can optimize the microstructure of the filler 40, thereby improving its mechanical properties and corrosion resistance.

[0053] As an optional implementation, please refer to Figure 9. The processing method of the composite metal frame 700 further includes:

[0054] S421, Take an image of the deposition well 30.

[0055] Among them, the deposition hole 30 can be captured by a CCD camera to analyze the size, shape and position of the deposition hole 30, so as to ensure the accuracy of subsequent laser 300 processing.

[0056] S422, Determine the position of the light spot 310 on the image and the position of the center of the deposition hole 30.

[0057] The exact position of the laser spot 310 on the image can be determined by image processing technology. At the same time, it is also necessary to determine the position of the center of the deposition hole 30 so that the laser spot 310 can be accurately aligned with the center of the deposition hole 30.

[0058] S423, based on the fact that the position of the light spot 310 and the position of the center of the deposition hole 30 are within a preset error range, it is determined that the center of the light spot 310 and the center of the deposition hole 30 coincide.

[0059] To ensure precise alignment of the laser 300 irradiation, the position of the laser 300 irradiation is adjusted by comparing the position of the laser spot 310 with the center position of the deposition hole 30, so that it coincides with the center of the deposition hole 30 or is within an acceptable error range. It can be understood that the preset error range defines the maximum allowable deviation when the laser spot 310 and the center of the deposition hole 30 are aligned. This deviation range needs to be set according to specific processing requirements and material properties. The preset error range can be ±0.05mm.

[0060] By employing the above steps, the precision and quality of the filling process can be improved, ensuring that the filler wire 200 can accurately melt within the deposition hole 30 and form a uniform and dense filler 40. By precisely controlling the position of the laser 300 irradiation, defects in the processing, such as bubbles, incomplete filling, or over-melting, can be reduced, thereby improving the performance and reliability of the final product. In addition, this precise alignment technology can also improve production efficiency, reduce material waste, and potentially extend the service life of processing equipment.

[0061] As an optional implementation, referring to FIG10, before the step of extending the filling wire 200 into the deposition hole 30, the method further includes:

[0062] S411, please refer to Figure 11, use the wire straightening device 400 to adjust the straightness of the filler wire 200.

[0063] S412, the straightness of the adjusted filler wire 200 is detected using a detection device 500 (as shown in Figure 13).

[0064] The function of the detection device 500 is to verify whether the filler wire 200 has reached the required straightness standard after adjustment. By detection, it can be ensured that the quality of the filler wire 200 meets the processing requirements and avoid problems such as uneven filling, poor contact of hole wall or inaccurate laser irradiation caused by bending or twisting of the filler wire 200.

[0065] By employing the above steps, the precision and quality of the filling process can be improved, ensuring that the filler wire 200 can be accurately melted and filled into the deposition hole 30. By ensuring the straightness of the filler wire 200, defects that may occur during the filling process, such as bubbles, incomplete filling, or over-melting, can be reduced, thereby improving the performance and reliability of the final product. In addition, this control over the straightness of the filler wire 200 can also improve production efficiency, reduce material waste, and potentially extend the service life of the processing equipment. By precisely controlling the quality of the filler wire 200, the stability and consistency of the laser 300 processing process can be ensured, thereby obtaining a better filling effect.

[0066] As an optional implementation, please refer to Figures 11 and 14. The wire straightening device 400 includes a rotating wheel assembly 410 and an adjusting assembly 420 arranged side by side. The rotating wheel assembly 410 includes n rotating wheels 411 spaced apart. The adjusting assembly 420 includes (n-1) adjusting members 421 spaced apart. The n rotating wheels 411 and (n-1) adjusting members 421 are arranged alternately. The specific steps of adjusting the straightness of the filler wire 200 using the wire straightening device 400 include:

[0067] S411A, the filler wire 200 abuts against n moving wheels 411, wherein the filler wire 200 includes a first end 210 and a second end 220 opposite to each other.

[0068] S411B, please refer to A in Figure 12, so that the adjustment member 421 corresponding to the first end 210 among the (n-1) adjustment members 421 moves toward the moving wheel assembly 410 and abuts against the first end 210, so that the second end 220 moves a first distance in the first direction (as shown in B in Figure 12).

[0069] S411C, move another adjustment member 421 of the (n-1) adjustment members 421 toward the moving wheel assembly 410 and abut against the filler wire 200, so that the second end 220 moves a first distance in a second direction opposite to the first direction (as shown by C in Figure 12). Wherein, the first direction is to the right and the second direction is to the left.

[0070] S411D, please refer to D in Figure 12 to move the remaining adjustment member 421 of the (n-1) adjustment members 421 toward the drive wheel assembly 410 and abut against the filler wire 200 to adjust the straightness of the filler wire 200.

[0071] Specifically, n is 4. There are two wire straightening devices 400, which are arranged at intervals in the vertical direction, as shown in Figure 12. The two wire straightening devices 400 can be operated in sequence, and each wire straightening device 400 is operated in sequence according to steps S411A-S411D to adjust the straightness of the filler metal wire 200.

[0072] In the above steps, by moving and slightly resisting the first adjusting member 421, force can be applied to the first end 210 of the filler wire 200, causing the second end 220 to slightly displace in the first direction; by moving and slightly resisting the second adjusting member 421, the second end 220 of the filler wire 200 can be displaced in the second direction opposite to the first direction, so as to further adjust and correct the straightness of the filler wire 200; by moving and slightly resisting the remaining adjusting member 421, the filler wire 200 can be finely adjusted to ensure that the straightness of the entire filler wire 200 meets the requirements. By working together with the moving wheel assembly 410 and the adjusting assembly 420, the filler wire 200 can be precisely adjusted to ensure its smooth delivery and precise filling in the deposition hole 30. It is understood that during the operation of the second wire straightening device 400, the force can be applied to the filler wire 200 by the movement and slight resistance of the first adjusting member 421, causing its second end 220 to be slightly displaced in a third direction, which is perpendicular to the first direction; the movement and slight resistance of the second adjusting member 421 can cause the second end 220 of the filler wire 200 to be displaced in a fourth direction opposite to the third direction, so as to further adjust and correct the straightness of the filler wire 200; the movement and slight resistance of the remaining adjusting member 421 can be used to make fine adjustments to the filler wire 200.

[0073] As an optional implementation, please refer to Figures 13 and 15. The detection device 500 includes a detection block 510, on which a detection hole 511 is provided. The step of using the detection device 500 to detect the straightness of the adjusted filler wire 200 includes:

[0074] S412A, causing the filler metal wire 200 to pass through the detection hole 511 of the detection block 510 multiple times.

[0075] S412B, Based on the fact that the filler wire 200 does not contact the hole wall of the detection hole 511, it is confirmed that the straightness of the filler wire 200 meets the standard.

[0076] Specifically, the filler wire 200 can pass through the detection hole 511 of the detection block 510 three times consecutively. The diameter of the detection hole 511 is 1.5mm-2mm. The length of the filler wire 200 can be 200mm.

[0077] In the above steps, the straightness is checked by passing the filler wire 200 through a detection hole 511 with a specific size and shape. The design of the detection hole 511 is usually to simulate certain characteristics of the actual deposition hole 30, or to provide a standardized detection environment. If the filler wire 200 does not contact the hole wall when passing through the detection hole 511, it indicates that the straightness of the filler wire 200 meets the requirements, that is, the filler wire 200 maintains good alignment during the passage without deviation or bending. This can be used to make a final confirmation of the straightness of the filler wire 200, ensuring that it can be accurately guided and positioned in the subsequent deposition process.

[0078] As an optional implementation, please refer to Figure 16. The laser is connected to the filler wire 200, that is, the laser and the filler wire 200 are bound together. After confirming that the straightness of the filler wire 200 meets the standard, the method further includes:

[0079] S401, please refer to Figure 17, place the test block 600 in the first position.

[0080] S402, please refer to Figure 18, make the laser 601 emit laser 300 towards the center of the test block 600.

[0081] The surface of the test block 600 is provided with a plurality of concentric scale circles 610, the diameters of which can be 1mm, 2mm, 3mm, 4mm, and 5mm respectively. By emitting a laser 300 toward the center of the test block 600, the situation where the laser 601 is aligned with the deposition hole 30 in actual operation can be simulated.

[0082] S403, based on the fact that the laser spot 310 emitted by the laser 300 from the laser 601 is located at the center of the test block 600, the test block 600 is moved a second distance toward the laser 601 to a second position.

[0083] The second distance is 5mm.

[0084] S404, determine whether the spot 310 of the laser 300 emitted by the laser 601 is located at the center of the test block 600.

[0085] By reconfirming the position of the light spot 310, it can be ensured that the light spot 310 remains aligned with the center after the test block 600 is moved.

[0086] S405, based on the fact that the laser spot 310 emitted by the laser 300 emitted by the laser 601 is located at the center of the test block 600, the test block 600 is moved a second distance away from the laser 601 to the first position, and it is determined again whether the laser spot 310 emitted by the laser 300 emitted by the laser 601 is located at the center of the test block 600.

[0087] The stability and accuracy of the laser 601 can be verified by repeating the alignment process.

[0088] S406, based on the fact that the light spot 310 of the laser 300 emitted by the laser 601 is once again located at the center of the test block 600, the filler wire 200 moves toward the center of the test block 600, and it is determined whether the projection of the filler wire 200 on the test block 600 coincides with the center of the test block 600.

[0089] By checking the concentricity of the filler wire 200 and the light spot 310 by projecting the filler wire 200, it can be ensured that the filler wire 200 is located at the center of the laser irradiation.

[0090] S407, based on the fact that the projection of the filler wire 200 on the test block 600 coincides with the center of the test block 600, it is determined that the spot 310 of the laser 300 emitted by the laser 601 is concentric with the filler wire 200.

[0091] By finally confirming the concentricity of the filler wire 200 and the light spot 310, it can be ensured that the energy of the laser 300 is effectively transferred to the filler wire 200.

[0092] As an optional implementation, please refer to Figure 19, the method further includes:

[0093] S408, based on the fact that the laser spot 310 of the laser 300 emitted by the laser 601 is concentric with the filling metal wire 200, the laser 601 emits the laser 300 toward the test metal plate (not shown), wherein the distance between the test metal plate and the laser 601 is equal to the distance between the bottom of the deposition hole 30 and the laser 601.

[0094] By using a test metal plate at the same distance from the deposition hole 30 to analogize the actual processing conditions, it can be ensured that the positioning of the laser 601 and the quality of the spot 310 are consistent with the test conditions in actual operation.

[0095] S409, based on the fact that the laser spot 310 emitted by the laser 300 towards the test metal plate by the laser 601 meets the standard, it is determined that the position of the laser 601 is qualified.

[0096] If the position and quality of the spot 310 on the test metal plate meet the predetermined standards, it indicates that the position of the laser 601 is correct, which can ensure that the laser 601 can accurately irradiate the filling metal wire 200 and the deposition hole 30 during the actual deposition process. This step is the final confirmation of the positioning of the laser 601, ensuring the accuracy and repeatability of the laser 300 processing process.

[0097] As an optional implementation, please refer to Figure 20. Based on the fact that the laser spot 310 emitted by the laser 300 towards the test metal plate by the laser 601 meets the standard, the steps to determine that the position of the laser 601 is qualified include:

[0098] S4091A, please refer to Figure 21, detect the color of the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate.

[0099] S4092A, based on the color of the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate, determine whether the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate conforms to the standard.

[0100] S4093A, the position of the laser 601 is deemed qualified based on the fact that the laser spot 310 emitted by the laser 300 towards the test metal plate by the laser 601 meets the standard.

[0101] Among them, the color of the standard light spot 310 is in the orange-yellow range.

[0102] In the above steps, color detection is part of quality control to ensure the accuracy and consistency of the laser 300 processing process and avoid processing defects; by detecting the color of the spot 310, it can be ensured that the laser 601 is accurately aligned with the filler wire 200.

[0103] As an optional implementation, please refer to Figure 22. Based on the fact that the laser spot 310 emitted by the laser 300 towards the test metal plate by the laser 601 meets the standard, the steps to determine that the position of the laser 601 is qualified include:

[0104] S4091B, detects the shape of the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate.

[0105] S4092B, Based on the shape of the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate, determine whether the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate conforms to the standard.

[0106] S4093B, the position of the laser 601 is deemed qualified based on the fact that the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate conforms to the standard.

[0107] Among them, the standard light spot 310 has a ring structure and is evenly distributed.

[0108] In the above steps, shape detection is part of quality control to ensure the accuracy and consistency of the laser 300 processing process and avoid processing defects; by detecting the shape of the spot 310, it can be ensured that the laser 601 is accurately aligned with the filler wire 200.

[0109] As an optional implementation, please refer to Figure 23. Based on the fact that the laser spot 310 emitted by the laser 300 towards the test metal plate by the laser 601 meets the standard, the steps to determine that the position of the laser 601 is qualified include:

[0110] S4091C, Detects the size of the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate.

[0111] S4092C, Based on the size of the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate, determine whether the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate conforms to the standard.

[0112] S4093C, the position of the laser 601 is deemed qualified based on the fact that the spot 310 of the laser 300 emitted by the laser 601 toward the test metal plate conforms to the standard.

[0113] The diameter of the standard spot 310 is between 1mm and 2mm. During measurement, the inner and outer rings of the spot 310 are measured and the average value is taken, and the measurement is performed at least three times.

[0114] In the above steps, the size inspection is part of the quality control to ensure the accuracy and consistency of the laser 300 processing process and avoid processing defects; by inspecting the size of the spot 310, it can be ensured that the laser 601 is accurately aligned with the filler wire 200.

[0115] In a second aspect, please refer to Figures 3 to 5. The present invention discloses a composite metal frame 700, including a first metal layer 10 and a second metal layer 20 stacked together. The composite metal frame 700 also includes a deposition hole 30. The deposition hole 30 is formed from the surface of the first metal layer 10 toward the second metal layer 20. The deposition hole 30 includes a main hole segment 31 and a receiving hole segment 32 connected to each other. The main hole segment 31 is located on one side of the first metal layer 10. The receiving hole segment 32 is at least partially received in the second metal layer 20. The diameter of the at least partially receiving hole segment 32 is larger than the diameter of the main hole segment 31. The inner wall of the deposition hole 30 is tightly fitted with a filler 40. The filler 40 and the second metal layer 20 corresponding to the filler 40 are provided with a mounting hole 41. The second metal layer 20 and the filler 40 are exposed on the inner wall of the mounting hole 41.

[0116] The material of the first metal layer 10 includes aluminum alloy, the material of the second metal layer 20 includes titanium or titanium alloy, and the material of the filler 40 includes titanium.

[0117] In a third aspect, the present invention discloses an electronic device including the aforementioned composite metal frame 700. The electronic device may be, but is not limited to, a mobile phone, tablet computer, laptop computer, smartwatch, monitor, etc.

[0118] Finally, the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention. [Simplified Explanation of the Diagram]

[0008] Figure 1 is a flowchart of a processing method for a composite metal frame according to an embodiment of the present invention.

[0009] Figure 2 is a schematic diagram of the structure of a metal composite substrate proposed in an embodiment of the present invention.

[0010] Figure 3 is a cross-sectional view of the metal composite substrate shown in Figure 2 along the AA direction.

[0011] Figure 4 is a schematic diagram of the structure after the filling material is formed in the deposition pores of the metal composite substrate shown in Figure 2.

[0012] Figure 5 is a schematic diagram of the structure of the composite metal frame obtained by removing part of the filler and the second metal layer corresponding to the filler from the metal composite substrate shown in Figure 4 to form mounting holes.

[0013] Figure 6 is a flowchart of the steps for forming deposition pores from the surface of the first metal layer into the interior of the metal composite substrate.

[0014] Figure 7 is a flowchart of the steps of depositing molten filler metal in the deposition hole and solidifying it to form a filler.

[0015] Figure 8 is a schematic diagram of the structure of the filling metal wire in the laser irradiation deposition hole.

[0016] Figure 9 is a flowchart of the steps to determine the coincidence of the center of the light spot and the center of the deposition hole.

[0017] Figure 10 is a flowchart of the steps before the step of inserting the filling wire into the deposition hole.

[0018] Figure 11 is a schematic diagram of the yarn straightening device.

[0019] Figure 12 is a process diagram of the wire straightening device shown in Figure 11 adjusting the straightness of the metal wire.

[0020] Figure 13 is a schematic diagram of the detection device.

[0021] Figure 14 is a flowchart of the steps for adjusting the straightness of the filler wire using the wire straightening device.

[0022] Figure 15 is a flowchart of the steps for the detection device to detect the straightness of the adjusted filler wire.

[0023] Figure 16 is a flowchart of the steps after confirming that the straightness of the filler wire meets the standard.

[0024] Figure 17 is a schematic diagram of the structure for determining whether the projection of the filler wire on the test block coincides with the center of the test block.

[0025] Figure 18 is a top view of the test block.

[0026] Figure 19 is a flowchart of the steps for determining the position of the laser device to be qualified according to an embodiment of the present invention.

[0027] Figure 20 is a flowchart of the steps for determining the qualified position of the laser in another embodiment of the present invention.

[0028] Figure 21 is a schematic diagram of the structure of the laser spot emitted by the laser of the present invention.

[0029] Figure 22 is a flowchart of the steps for determining the position of the laser device to be qualified according to another embodiment of the present invention.

[0030] Figure 23 is a flowchart of the steps for determining the position of the laser in another embodiment of the present invention.

Claims

1. A method for processing a composite metal frame, the improvement of which includes: A metal composite substrate is provided, the metal composite substrate comprising a first metal layer and a second metal layer stacked together; Deposition holes are formed from the surface of the first metal layer into the interior of the metal composite substrate. Each deposition hole includes a main hole segment and a receiving hole segment connected to each other. The main hole segment is located on one side of the first metal layer, and the receiving hole segment is at least partially received into the second metal layer. The diameter of at least a portion of the receiving hole segment is larger than the diameter of the main hole segment. Molten filler metal is deposited and solidified in the deposition hole to form a filler body, such that the filler body fits tightly against the inner wall of the main hole segment; a portion of the filler body and the second metal layer corresponding to the filler body are removed to form a mounting hole, wherein the second metal layer and the filler body are exposed from the inner wall of the mounting hole.

2. The processing method of the composite metal frame as described in claim 1, wherein, The step of forming a deposition hole from the surface of the first metal layer into the interior of the metal composite substrate includes: using a first tool to drill a hole from the first metal layer into the second metal layer to form the main hole segment; using a second tool to drill a hole from the bottom of the main hole segment into the second metal layer to form the receiving hole segment, the receiving hole segment extending into the second metal layer.

3. The processing method of the composite metal frame as described in claim 2, wherein, The diameter of the receiving hole increases from the end connected to the main hole to the end away from the main hole.

4. The processing method of the composite metal frame as described in claim 1, wherein, The step of depositing molten filler metal in the deposition hole and solidifying it to form a filler body includes: extending a filler metal wire into the deposition hole and coaxially positioning the filler metal wire with the deposition hole; irradiating the filler metal wire with a laser whose spot coincides with the center of the deposition hole, so that the filler metal wire melts and fills the deposition hole to form the filler body.

5. The processing method of the composite metal frame as described in claim 4, wherein, The processing method of the composite metal frame further includes: capturing an image of the deposition hole; determining the position of the light spot on the image and the position of the center of the deposition hole; and determining that the light spot coincides with the center of the deposition hole based on the fact that the position of the light spot and the position of the center of the deposition hole are within a preset error range.

6. The method for processing the composite metal frame as described in claim 4, wherein, Before the step of inserting the filler wire into the deposition hole, the method further includes: adjusting the straightness of the filler wire using a wire straightening device; and detecting the straightness of the adjusted filler wire using a detection device.

7. A method for processing the composite metal frame as described in claim 6, wherein, The wire straightening device includes a rotating wheel assembly and an adjusting assembly arranged side by side. The rotating wheel assembly includes n rotating wheels spaced apart, and the adjusting assembly includes (n-1) adjusting members spaced apart. The n rotating wheels and (n-1) adjusting members are staggered. The step of adjusting the straightness of the filler wire using the wire straightening device includes: making the filler wire abut against the n rotating wheels, wherein the filler wire includes a first end and a second end opposite to each other; moving the adjusting member corresponding to the first end of the (n-1) adjusting members toward the rotating wheel assembly and abutting against the first end, so that the second end moves a first distance in a first direction; moving another adjusting member of the (n-1) adjusting members toward the rotating wheel assembly and abutting against the filler wire, so that the second end moves the first distance in a second direction opposite to the first direction; and moving the remaining adjusting members of the (n-1) adjusting members toward the rotating wheel assembly and abutting against the filler wire to adjust the straightness of the filler wire.

8. A method for processing the composite metal frame as described in claim 6, wherein, The detection device includes a detection block with detection holes. The step of using the detection device to detect the straightness of the adjusted filler wire includes: passing the filler wire through the detection holes of the detection block multiple times; and confirming that the straightness of the filler wire meets the standard based on the fact that the filler wire does not contact the hole wall of the detection hole.

9. A method for processing the composite metal frame as described in claim 8, wherein, The laser is connected to the filler wire. After confirming that the straightness of the filler wire meets the standard, the method further includes: placing the test block in a first position; emitting a laser beam towards the center of the test block; moving the test block a second distance to a second position based on the laser beam spot being located at the center of the test block; determining whether the laser beam spot is located at the center of the test block; moving the test block away from the laser beam to the first position based on the laser beam spot being located at the center of the test block, and again determining whether the laser beam spot is located at the center of the test block; moving the filler wire towards the center of the test block based on the laser beam spot being located at the center of the test block, and determining whether the projection of the filler wire on the test block coincides with the center of the test block; determining that the laser beam spot is concentric with the filler wire based on the projection of the filler wire on the test block coinciding with the center of the test block.

10. A method for processing the composite metal frame as described in claim 9, wherein, The method further includes: emitting laser light from the laser emitter towards a test metal plate based on the laser spot being concentric with the filler metal wire, wherein the distance between the test metal plate and the laser emitter is equal to the distance between the bottom of the deposition hole and the laser emitter; and determining that the position of the laser emitter is qualified based on the laser spot emitted by the laser towards the test metal plate conforming to a standard.

11. A method for processing the composite metal frame as described in claim 10, wherein, The step of determining the qualified position of the laser based on the fact that the laser spot emitted by the laser towards the test metal plate meets the standard includes: detecting the color of the laser spot emitted by the laser towards the test metal plate; determining whether the laser spot emitted by the laser towards the test metal plate meets the standard based on the color of the laser spot emitted by the laser towards the test metal plate; and determining the qualified position of the laser based on the fact that the laser spot emitted by the laser towards the test metal plate meets the standard.

12. A method for processing the composite metal frame as described in claim 10, wherein, The step of determining that the laser's position is qualified based on the laser spot emitted by the laser towards the test metal plate conforming to the standard includes: detecting the shape of the laser spot emitted by the laser towards the test metal plate; determining whether the laser spot emitted by the laser towards the test metal plate conforms to the standard based on the shape of the laser spot emitted by the laser towards the test metal plate; and determining that the laser's position is qualified based on the laser spot emitted by the laser towards the test metal plate conforming to the standard.

13. A method for processing the composite metal frame as described in claim 10, wherein, The step of determining the qualified position of the laser based on the compliance standard of the laser emitted by the laser towards the test metal plate includes: detecting the size of the laser spot emitted by the laser towards the test metal plate; determining whether the laser spot emitted by the laser towards the test metal plate conforms to the standard based on the size of the laser spot emitted by the laser towards the test metal plate; and determining that the position of the laser is qualified based on the compliance of the laser spot emitted by the laser towards the test metal plate.

14. A composite metal frame, improved in that it includes a first metal layer and a second metal layer stacked together, the composite metal frame further including a deposition hole, the deposition hole being formed from the surface of the first metal layer into the interior of the metal composite substrate, the deposition hole including a main hole segment and a receiving hole segment connected to each other, the main hole segment being located on one side of the first metal layer, the receiving hole segment being at least partially received into the second metal layer, the diameter of at least a portion of the receiving hole segment being larger than the diameter of the main hole segment, a filler being tightly fitted to the inner wall of the deposition hole, the filler and the second metal layer corresponding to the filler having an installation hole, the second metal layer and the filler being exposed on the inner wall of the installation hole.

15. The composite metal frame as described in claim 14, wherein, The material of the first metal layer includes an aluminum alloy, the material of the second metal layer includes titanium or a titanium alloy, and the material of the filler includes titanium.

16. An electronic device, improved in that it includes a composite metal frame as described in claim 14.

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