Metal thin-wall part for fingerprint identification module, processing method and electronic equipment

Abstract

The invention discloses a metal thin-wall part for a fingerprint recognition module, a machining method and electronic equipment, and belongs to the technical field of CNC machining, and the machining method comprises the steps that a raw material profile is fixed to a primary clamping position of a CNC machine table, the same clamping position is located on the raw material profile, and a front side face area of a thin-wall body is formed through CNC machining; the back side face area of the thin-wall body is machined through a T-shaped milling cutter, a first material connecting point and a second material connecting point are reserved at the two ends of the back side face area respectively, and the first material connecting point and the second material connecting point are connected to a raw material profile respectively to provide machining support; the first material connecting point and the second material connecting point are broken through a pneumatic material taking jig so that the thin-wall body can be taken out; and carrying out batch polishing so as to respectively remove residual salient points on the first material connecting point and the second material connecting point on the thin-wall body. The technical effects that the machining cost can be reduced, poor appearance and size are avoided, and the product quality is improved are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of CNC machining, and in particular relates to a metal thin-walled part for a fingerprint recognition module, a machining method and an electronic device. Background Art

[0002] In the manufacturing process of consumer electronics, the precision exterior parts of consumer electronics products include high-precision exterior surfaces and functional areas, which face significant challenges in CNC machining. In existing technologies, a multi-clamping step-by-step machining method is usually adopted. For example, for hollow structural metal parts, double-clamping processing is required to complete the machining of different areas separately. The two clamping, alignment and independent processing processes will significantly increase working hours and equipment utilization, which is not conducive to reducing processing costs. The clamping force acting on the finished exterior surface is also prone to irreversible damage such as indentation and scratches. In addition, thin-walled parts are prone to micro-deformation due to stress during the secondary clamping, resulting in poor critical dimensions.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the processing cost is high, poor appearance and size are easily produced, and product quality is reduced.

[0005] In order to solve the above technical problems, the present invention provides a method for processing metal thin-walled parts for fingerprint recognition modules, the method comprising S1, fixing the raw material profile on a one-time clamping position of a CNC machine, and forming the front side area of ​​the thin-walled body by CNC processing on the raw material profile at the same clamping position; S2, using a T-shaped milling cutter to process the back side area of ​​the thin-walled body, and retaining a first connecting point and a second connecting point at both ends of the back side area, respectively, the first connecting point and the second connecting point are respectively connected to the raw material profile to provide processing support, wherein step S1 and step S2 complete the processing at the same clamping position; S3, breaking the first connecting point and the second connecting point by a pneumatic material picking fixture to remove the thin-walled body; S4, batch grinding to remove the residual protrusions of the first connecting point and the second connecting point on the thin-walled body respectively.

[0006] Optionally, the method for processing a thin-walled metal part further includes installing a glass cover plate on the front side area and installing a fingerprint recognition module on the back side area.

[0007] Optionally, the method of breaking the first and second connecting points by a pneumatic material picking fixture includes aligning the pneumatic material picking fixture with the positioning hole of the CNC machine through a positioning pin; activating the pneumatic component to drive the lifting block to move upward to break the first and second connecting points respectively.

[0008] Optionally, the batch grinding to remove the residual protrusions of the first connecting point and the second connecting point on the thin-walled body respectively includes using sandpaper to grind to remove the residual protrusions of the first connecting point and the second connecting point on the thin-walled body respectively.

[0009] Optionally, the use of a T-shaped milling cutter to process the back side area of ​​the thin-walled body includes the T-shaped milling cutter processing the back side area of ​​the thin-walled body according to preset processing parameters; wherein the preset processing parameters include spindle speed, feed speed, cutting depth, diameter of the cutter head of the T-shaped milling cutter, height of the cutter neck and diameter of the cutter neck, the spindle speed has a value range of 8500rpm to 10000rpm, the feed speed has a value range of 150mm / min to 500mm / min, the cutting depth has a value range of 0.1mm to 1.6mm, the diameter of the cutter head of the T-shaped milling cutter has a value range of 3.0mm to 3.6mm, the height of the cutter neck has a value range of 0.9mm to 1.1mm, the diameter of the cutter neck has a value range of 1.1mm to 1.3mm, and the diameter of the cutter neck is smaller than the diameter of the cutter head.

[0010] According to another aspect of the present invention, the present invention also provides a metal thin-walled part for a fingerprint recognition module, wherein the metal thin-walled part includes a thin-walled body having opposite front side areas and back side areas, and a first connecting point and a second connecting point, wherein the first connecting point and the second connecting point are symmetrically arranged at the two ends of the back side area of ​​the thin-walled body, and the first connecting point and the second connecting point are respectively connected to the raw material profile.

[0011] Optionally, the thin-walled body includes a shell body having a hollow groove, the hollow groove passes through the front side area and the back side area, the front side area and the back side area are respectively located on both sides of the shell body, and a first support part having a first give way groove and a second support part having a second give way groove are respectively provided in the back side area, the first connecting point is connected to the first supporting part, and the second connecting point is connected to the second supporting part.

[0012] Optionally, the projection of the first connecting point on the first supporting part in a direction close to the first supporting part is located on the first supporting part, and the projection of the second connecting point on the second supporting part in a direction close to the second supporting part is located on the second supporting part.

[0013] Optionally, the widths of the first connecting point and the second connecting point are both less than or equal to 0.15 mm, and the lengths of the first connecting point and the second connecting point are both less than or equal to 0.3 mm.

[0014] According to another aspect of the present invention, the present invention also provides an electronic device for metal thin-walled parts of a fingerprint recognition module, comprising a memory, a processor, and a computer program stored in the memory and runnable on the processor, wherein the processor implements the following steps when executing the program: S1, fixing the raw material profile at a single clamping position of a CNC machine, and forming the front side area of ​​a thin-walled body by CNC processing on the raw material profile at the same clamping position; S2, using a T-shaped milling cutter to process the back side area of ​​the thin-walled body, and retaining a first connecting point and a second connecting point at both ends of the back side area, respectively, the first connecting point and the second connecting point are respectively connected to the raw material profile to provide processing support, wherein step S1 and step S2 complete the processing at the same clamping position; S3, breaking the first connecting point and the second connecting point by a pneumatic material picking fixture to remove the thin-walled body; S4, batch grinding to remove the residual protrusions of the first connecting point and the second connecting point on the thin-walled body respectively.

[0015] Beneficial effects:

[0016] The present invention provides a method for processing metal thin-walled parts for a fingerprint recognition module, which comprises the following steps: fixing a raw material profile at a primary clamping position of a CNC machine, and forming a front side area of ​​a thin-walled body on the raw material profile by CNC machining at the same clamping position; then using a T-shaped milling cutter to machine a back side area of ​​the thin-walled body, and retaining a first connecting point and a second connecting point at both ends of the back side area, respectively, wherein the first connecting point and the second connecting point are respectively connected to the raw material profile to provide machining support; wherein the S1 and the S2 are machined at the same clamping position; secondly, a pneumatic material removal fixture is used to break the first connecting point and the second connecting point to remove the thin-walled body; and then batch grinding is performed to remove residual protrusions of the first connecting point and the second connecting point on the thin-walled body. By completing multiple steps of processing at the same clamping position, the accumulation of positioning errors caused by multiple clamping can be avoided, and the time for repeated clamping can be reduced, which is conducive to reducing processing costs. In addition, the first and second connecting points are retained to provide stable support, effectively resisting processing vibration, thereby preventing thin-wall deformation of thin-walled metal parts and avoiding poor appearance and size. At the same time, batch grinding is used to eliminate residual protrusions on the removed thin-walled bodies, which will make the surface of the thin-walled bodies where the first and second connecting points are located smooth, ensuring surface quality consistency and helping to improve product quality. This achieves the technical effect of reducing processing costs, avoiding poor appearance and size, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The present invention provides a flowchart of a method for processing thin-walled metal parts for a fingerprint recognition module.

[0019] Figure 2 A schematic structural diagram of a thin-walled metal component for a fingerprint recognition module provided by an embodiment of the present invention.

[0020] Figure 3 A schematic structural diagram of a shell body of a metal thin-walled component for a fingerprint recognition module provided by an embodiment of the present invention.

[0021] Figure 4 A schematic structural diagram of a first connecting point and a raw material profile in a thin-walled metal component for a fingerprint recognition module provided by an embodiment of the present invention.

[0022] Figure 5 A structural diagram of an electronic device comprising a thin-walled metal component for a fingerprint recognition module provided by an embodiment of the present invention.

[0023] The meanings of the reference numerals in the accompanying drawings are:

[0024] 1—thin-walled body, 11—front side area, 12—back side area, 13—hollow groove, 14—shell body, 15—first clearance groove, 16—first support part, 17—second clearance groove, 18—second support part, 2—first connecting point, 3—second connecting point, 4—raw material profile, 5—T-shaped milling cutter. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0026] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0027] In the embodiments of this application, "at least one" refers to one or more; "a plurality" refers to two or more. In the description of this application, the terms "first," "second," "third," etc. are used only for the purpose of distinguishing descriptions and should not be understood as indicating or implying relative importance or order.

[0028] References to "one embodiment" or "some embodiments" described in this specification mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, in this specification, the terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. It should be noted that in the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0029] It should be pointed out that, in the embodiment of the present invention, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. At the same time, "connection" in the embodiment of the present application can also be understood as electrical connection, and the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, A and B are connected, which can be either A and B directly connected, or A and B indirectly connected through one or more other electrical components. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

[0030] See Figure 1 , Figure 1 The flowchart of a method for processing a thin-walled metal part for a fingerprint recognition module provided by an embodiment of the present invention is as follows. Embodiment 1 of the present invention provides a method for processing a thin-walled metal part for a fingerprint recognition module, the method comprising the following steps:

[0031] Step S1: Fix the raw material profile 4 to the primary clamping position of the CNC machine, and form the front side area 11 of the thin-walled body 1 on the raw material profile 4 at the same clamping position by CNC machining;

[0032] Specifically, the raw material profile 4 can be made of aluminum alloy, stainless steel, titanium alloy, or magnesium alloy. It can be secured to the CNC machine's primary clamping position using a hydraulic clamp, a vacuum chuck, or a magnetic clamp. Within this clamping position, an end mill can be used to machine the raw material profile 4 to form the front and side regions 11 of the thin-walled body 1. Completing the front and side machining in a single clamping operation helps eliminate repetitive positioning errors.

[0033] Step S2: using a T-shaped milling cutter 5 to process the back side region 12 of the thin-walled body 1, and retaining a first connecting point 2 and a second connecting point 3 at both ends of the back side region 12, respectively. The first connecting point 2 and the second connecting point 3 are respectively connected to the raw material profile 4 to provide processing support, wherein step S1 and step S2 are completed in the same clamping position;

[0034] As an embodiment, the use of the T-shaped milling cutter 5 to process the back side area 12 of the thin-walled body 1 includes the T-shaped milling cutter 5 processing the back side area 12 of the thin-walled body 1 according to preset processing parameters; wherein the preset processing parameters include the spindle speed, feed speed, cutting depth, the diameter of the cutter head of the T-shaped milling cutter 5, the height of the cutter neck and the diameter of the cutter neck, the spindle speed has a value range of 8500 rpm to 10000 rpm, that is, the spindle speed is less than or equal to 10000 rpm, and the spindle speed is greater than or equal to 8500 rpm, the feed speed has a value range of 150 mm / min to 500 mm / min, that is, the feed speed is less than or equal to 500 mm / min, and the feed speed is greater than or equal to 150 mm / min, The cutting depth ranges from 0.1mm to 1.6mm, that is, the cutting depth is less than or equal to 1.6mm, and the cutting depth is greater than or equal to 0.1mm. The diameter of the cutter head of the T-shaped milling cutter ranges from 3.0mm to 3.6mm, that is, the diameter of the cutter head of the T-shaped milling cutter is less than or equal to 3.6mm, and the diameter of the cutter head of the T-shaped milling cutter is greater than or equal to 3.0mm. The height of the blade neck ranges from 0.9mm to 1.1mm, that is, the height of the blade neck is less than or equal to 1.1mm, and the height of the blade neck is greater than or equal to 0.9mm. The diameter of the blade neck ranges from 1.1mm to 1.3mm, that is, the diameter of the blade neck is less than or equal to 1.3mm, and the diameter of the blade neck is greater than or equal to 1.1mm. At the same time, the diameter of the blade neck is smaller than the diameter of the cutter head.

[0035] Specifically, a T-shaped milling cutter 5, such as one with a cutter head diameter of 3.3 mm, a cutter neck height of 1.0 mm, and a cutter neck diameter of 1.2 mm, is used to process the back side area 12 of the thin-walled body 1. The processing parameters can be set as a spindle speed of 9500 rpm, a feed speed of 400 mm / min, and a cutting depth of 0.8 mm. At the same time, the first connecting point 2 and the second connecting point 3 are retained at both ends of the back side area 12 of the thin-walled body 1, and the first connecting point 2 and the second connecting point 3 are respectively connected to the main body of the raw material profile 4. Rigid support is provided by the first connecting point 2 and the second connecting point 3, respectively, to suppress thin-wall deformation. In addition, the processing of the back side area 12 of the thin-walled body 1 can be completed simultaneously with the above-mentioned step S1 at the same clamping position, which is beneficial to improving the position accuracy of the front side area 11 and the back side area 12.

[0036] Step S3, using a pneumatic material removal jig to break the first material connection point 2 and the second material connection point 3 to remove the thin-walled body 1;

[0037] As an embodiment, the method of breaking the first connecting point 2 and the second connecting point 3 by a pneumatic material picking jig includes aligning the pneumatic material picking jig with the positioning hole of the CNC machine through a positioning pin; activating the pneumatic component to drive the lifting block to move upward to break the first connecting point 2 and the second connecting point 3 respectively.

[0038] Specifically, the freedom of the jig can be constrained by the locating pins, and the breaking process can be free of lateral force to avoid plastic deformation of the thin-walled body 1. It can be understood by those skilled in the art that in the first embodiment of the present invention, a method for processing thin-walled metal parts for a fingerprint recognition module is provided without restriction on the specific structure of the pneumatic material picking jig, locating pins, activated pneumatic components and lifting blocks. It is only necessary to insert the locating pins of the pneumatic material picking jig into the locating holes of the CNC machine to achieve a higher alignment accuracy. After the pneumatic component is activated, the lifting block will be driven to move vertically upward, and the first connecting point 2 and the second connecting point 3 will be synchronously cut off with a certain breaking force, and the thin-walled body 1 can be taken out. In addition, the lifting block can also be replaced with a wedge-shaped structure, and a pressure sensor can be integrated on the pneumatic component to monitor the breaking force in real time.

[0039] Step S4: Batch grinding to remove the remaining protrusions of the first connecting point 2 and the second connecting point 3 on the thin-walled body 1 respectively.

[0040] As an embodiment, the batch grinding to remove the residual protrusions of the first connecting point 2 and the second connecting point 3 on the thin-walled body 1 includes using sandpaper grinding to remove the residual protrusions of the first connecting point 2 and the second connecting point 3 on the thin-walled body 1.

[0041] Specifically, by clamping batches of thin-walled bodies 1 on a rotating fixture, sandpaper is used at a constant circumferential speed to polish the remaining bumps at the first joining point 2 and the second joining point 3, thereby reducing the surface roughness and bump height difference after polishing. Batch polishing improves efficiency, and a negative pressure dust collection system can be added during the polishing process to control dust pollution.

[0042] The first embodiment of the present invention provides a method for processing a thin-walled metal part for a fingerprint recognition module, further comprising installing a glass cover plate on the front side area 11 and installing the fingerprint recognition module on the back side area 12 .

[0043] Specifically, the glass cover can be bonded to the front side area 11 of the thin-walled body 1 using UV glue or laser welding, and the fingerprint recognition module can be fixed to the back side area 12 using conductive silver paste to improve the bonding strength and electrical signal stability.

[0044] The present invention provides a method for processing metal thin-walled parts for a fingerprint recognition module, which comprises fixing a raw material profile 4 at a primary clamping position of a CNC machine, and forming a front side area 11 of a thin-walled body 1 on the raw material profile 4 at the same clamping position by CNC machining; then using a T-shaped milling cutter 5 to machine a back side area 12 of the thin-walled body 1, and retaining a first connecting point 2 and a second connecting point 3 at both ends of the back side area 12, respectively, wherein the first connecting point 2 and the second connecting point 3 are respectively connected to the raw material profile 4 to provide machining support; wherein the S1 and the S2 are machined at the same clamping position; secondly, the first connecting point 2 and the second connecting point 3 are broken off by a pneumatic material removal fixture to remove the thin-walled body 1; and then batch grinding is performed to remove the residual protrusions of the first connecting point 2 and the second connecting point 3 on the thin-walled body 1. In this way, by completing multi-step processing at the same clamping position, the accumulation of positioning errors caused by multiple clamping can be avoided, and the time for repeated clamping can be reduced, which is conducive to reducing processing costs. In addition, the first connecting point 2 and the second connecting point 3 are retained to provide stable support, effectively resisting processing vibration, so as to prevent the thin wall deformation of the metal thin-walled part and avoid poor appearance and size. At the same time, the removed thin-walled body 1 is batch-polished to eliminate residual protrusions, which will make the surface of the thin-walled body 1 where the first connecting point 2 and the second connecting point 3 are located smooth, ensuring surface quality consistency, which is conducive to improving product quality. Thus, the technical effect of reducing processing costs, avoiding poor appearance and size, and improving product quality is achieved.

[0045] In order to provide a detailed description of a metal thin-walled part for a fingerprint recognition module provided by the present invention, the above embodiment 1 provides a detailed description of a metal thin-walled part processing method for a fingerprint recognition module. Based on the same inventive concept, the present application also provides a metal thin-walled part for a fingerprint recognition module, see embodiment 2 for details.

[0046] See Figures 2 to 4 As shown, Figure 2 Schematic diagram of the structure of a thin-walled metal component for a fingerprint recognition module provided by an embodiment of the present invention. Figure 3 This is a structural diagram of a metal thin-walled shell body for a fingerprint recognition module provided by an embodiment of the present invention. Figure 4 Schematic diagram of the structure of the first connecting point and raw material profile in a thin-walled metal part for a fingerprint recognition module provided by an embodiment of the present invention. Embodiment 2 of the present invention provides a thin-walled metal part for a fingerprint recognition module, the thin-walled metal part comprising a thin-walled body 1, a first connecting point 2, and a second connecting point 3. The thin-walled body 1 has opposite front side regions 11 and back side regions 12. The first connecting point 2 and the second connecting point 3 are symmetrically arranged at the two ends of the back side region 12 of the thin-walled body 1. The first connecting point 2 and the second connecting point 3 are respectively connected to the raw material profile 4.

[0047] The thin-walled metal part comprises a thin-walled body 1, a first connection point 2, and a second connection point 3. The thin-walled body 1 has a front side region 11 and a back side region 12 formed by CNC machining. The first and second connection points 2 and 3 are symmetrically positioned at opposite ends of the back side region 12. The first and second connection points 2 and 3 are each integrally connected to the raw material profile 4. The symmetrical arrangement of the first and second connection points 2 and 3 provides balanced support and prevents deformation of the thin-walled part.

[0048] In this embodiment, the first connecting point 2 and the second connecting point 3 are symmetrically arranged at the two ends of the back side area 12 of the thin-walled body 1, and the front side area 11 and the back side area 12 of the thin-walled body 1 are arranged opposite to each other, and the first connecting point 2 and the second connecting point 3 are respectively connected to the raw material profile 4. In this way, by completing multiple steps of processing at the same clamping position, the accumulation of positioning errors caused by multiple clampings can be avoided, and the time for repeated clamping can be reduced, which is conducive to reducing processing costs. The first connecting point 2 and the second connecting point 3 are retained to provide stable support and effectively resist processing vibration to prevent thin-wall deformation of metal thin-walled parts and avoid poor appearance and size. At the same time, the removed thin-walled body 1 is batch-polished to eliminate residual protrusions, which will make the surface of the thin-walled body 1 where the first connecting point 2 and the second connecting point 3 are located smooth, ensure surface quality consistency, and help improve product quality. Thereby achieving the technical effect of reducing processing costs, avoiding poor appearance and size, and improving product quality.

[0049] As an embodiment, the thin-walled body 1 includes a shell body 14 having a hollow groove 13. The hollow groove 13 extends through the front side region 11 and the back side region 12. The front side region 11 and the back side region 12 are located on either side of the shell body 14. The back side region 12 is provided with a first support portion 16 and a second support portion 18, respectively. The first support portion 16 has a first clearance groove 15, and the second support portion 18 has a second clearance groove 17. The first connecting point 2 is connected to the first support portion 16, and the second connecting point 3 is connected to the second support portion 18. The thin-walled metal body 1 includes a shell body 14 having a hollow groove 13. The hollow groove 13 extends through the front side region 11 and the back side region 12. The back side region 12 is machined by two T-shaped milling cutters 5 to form the fingerprint module assembly surface. The first support portion 16 and the second support portion 18 are provided at both ends of the back side region 12. The first support portion 16 has a first clearance groove 15, and the second support portion 18 has a second clearance groove 17. The first connecting point 2 is integrally connected to the first support portion 16 , and the second connecting point 3 is integrally connected to the second support portion 18 , forming a force transmission path to resist processing vibration.

[0050] In some embodiments, the projection of the first connecting point 2 along the direction close to the first support portion 16 is located on the first support portion 16, and the projection of the second connecting point 3 along the direction close to the second support portion 18 is located on the second support portion 18, so that the cutting force is transmitted along the normal direction of the first support portion 16 and the second support portion 18, which is beneficial to suppressing warping and deformation of the thin-walled body 1.

[0051] In some embodiments, the width of the first connecting point 2 is as follows: Figure 1 In the horizontal left and right directions from the first connecting point 2 to the second connecting point 3, that is, the width of the first connecting point 2 in the X-axis direction, the width of the first connecting point 2 is less than or equal to 0.15mm, the width of the second connecting point 3 is less than or equal to 0.15mm, and the length of the first connecting point 2 is as follows: Figure 1 The direction perpendicular to the width direction of the first connecting point 2 on the horizontal plane shown, that is, the length of the first connecting point 2 in the Y-axis direction, is less than or equal to 0.3 mm, and the length of the second connecting point 3 is less than or equal to 0.3 mm, so that there is no plastic deformation in the breaking process of the first connecting point 2 and the second connecting point 3, and the surface height difference after polishing is small.

[0052] In order to provide a detailed description of an electronic device for a metal thin-walled part for a fingerprint recognition module provided by the present invention, the above embodiment one provides a detailed description of a method for processing a metal thin-walled part for a fingerprint recognition module. Based on the same inventive concept, the present application also provides an electronic device for a metal thin-walled part for a fingerprint recognition module, see embodiment three for details.

[0053] SeeFigure 5 As shown, Figure 5 This is a structural diagram of an electronic device for thin-walled metal parts of a fingerprint recognition module, provided in an embodiment of the present invention. A third embodiment of the present invention provides an electronic device for thin-walled metal parts of a fingerprint recognition module, comprising a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor 320. When the processor 320 executes the program, the following steps are performed:

[0054] Step S1: Fix the raw material profile 4 to the primary clamping position of the CNC machine, and form the front side area 11 of the thin-walled body 1 on the raw material profile 4 at the same clamping position by CNC machining;

[0055] Step S2: using a T-shaped milling cutter 5 to process the back side region 12 of the thin-walled body 1, and retaining a first connecting point 2 and a second connecting point 3 at both ends of the back side region 12, respectively. The first connecting point 2 and the second connecting point 3 are respectively connected to the raw material profile 4 to provide processing support, wherein step S1 and step S2 are completed in the same clamping position;

[0056] Step S3, using a pneumatic material removal jig to break the first material connection point 2 and the second material connection point 3 to remove the thin-walled body 1;

[0057] Step S4: Batch grinding to remove the remaining protrusions of the first connecting point 2 and the second connecting point 3 on the thin-walled body 1 respectively.

[0058] The present invention provides an electronic device for a metal thin-walled part of a fingerprint recognition module, wherein a raw material profile 4 is fixed on a primary clamping position of a CNC machine, and a front side area 11 of a thin-walled body 1 is formed on the raw material profile 4 at the same clamping position by CNC machining; a T-shaped milling cutter 5 is then used to machine a back side area 12 of the thin-walled body 1, and a first connecting point 2 and a second connecting point 3 are respectively retained at both ends of the back side area 12, and the first connecting point 2 and the second connecting point 3 are respectively connected to the raw material profile 4 to provide machining support; wherein the S1 and the S2 are machined at the same clamping position; secondly, the first connecting point 2 and the second connecting point 3 are cut off by a pneumatic material removal fixture to remove the thin-walled body 1; and then batch grinding is performed to remove the residual protrusions of the first connecting point 2 and the second connecting point 3 on the thin-walled body 1. In this way, by completing multi-step processing at the same clamping position, the accumulation of positioning errors caused by multiple clamping can be avoided, and the time for repeated clamping can be reduced, which is conducive to reducing processing costs. In addition, the first connecting point 2 and the second connecting point 3 are retained to provide stable support, effectively resisting processing vibration, so as to prevent the thin wall deformation of the metal thin-walled part and avoid poor appearance and size. At the same time, the removed thin-walled body 1 is batch-polished to eliminate residual protrusions, which will make the surface of the thin-walled body 1 where the first connecting point 2 and the second connecting point 3 are located smooth, ensuring surface quality consistency, which is conducive to improving product quality. Thus, the technical effect of reducing processing costs, avoiding poor appearance and size, and improving product quality is achieved.

[0059] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above embodiments merely represent preferred embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for processing thin-walled metal parts for fingerprint recognition modules, characterized in that: The method for processing a thin-walled metal part comprises: S1. Fixing the raw material profile at a primary clamping position of a CNC machine, and forming the front and side areas of the thin-walled body on the raw material profile at the same clamping position by CNC machining; S2. Using a T-shaped milling cutter to process the back side area of ​​the thin-walled body, and retaining a first connecting point and a second connecting point at both ends of the back side area, respectively, the first connecting point and the second connecting point being respectively connected to the raw material profile to provide processing support, wherein step S1 and step S2 are completed in the same clamping position; S3, breaking the first connecting point and the second connecting point by a pneumatic material removal jig to remove the thin-walled body; S4. Batch grinding to remove residual protrusions at the first connecting point and the second connecting point on the thin-walled body respectively.

2. The method for processing a thin-walled metal part for a fingerprint recognition module according to claim 1, characterized in that: The method for processing a thin-walled metal part further includes installing a glass cover plate on the front side area and installing a fingerprint recognition module on the back side area.

3. The method for processing a thin-walled metal part for a fingerprint recognition module according to claim 1, characterized in that: The method of breaking the first and second connecting points by a pneumatic material picking fixture includes aligning the pneumatic material picking fixture with the positioning hole of the CNC machine through a positioning pin; activating the pneumatic component to drive the lifting block to move upward to break the first and second connecting points respectively.

4. The method for processing a thin-walled metal part for a fingerprint recognition module according to claim 1, characterized in that: The batch grinding to remove the residual convex points of the first connecting point and the second connecting point on the thin-walled body respectively includes using sandpaper to grind to remove the residual convex points of the first connecting point and the second connecting point on the thin-walled body respectively.

5. The method for processing a thin-walled metal part for a fingerprint recognition module according to claim 1, characterized in that: The use of a T-shaped milling cutter to process the back side area of ​​the thin-walled body includes the T-shaped milling cutter processing the back side area of ​​the thin-walled body according to preset processing parameters; wherein the preset processing parameters include spindle speed, feed speed, cutting depth, diameter of the cutter head of the T-shaped milling cutter, height of the cutter neck and diameter of the cutter neck, the spindle speed has a value range of 8500rpm to 10000rpm, the feed speed has a value range of 150mm / min to 500mm / min, the cutting depth has a value range of 0.1mm to 1.6mm, the diameter of the cutter head of the T-shaped milling cutter has a value range of 3.0mm to 3.6mm, the height of the cutter neck has a value range of 0.9mm to 1.1mm, the diameter of the cutter neck has a value range of 1.1mm to 1.3mm, and the diameter of the cutter neck is smaller than the diameter of the cutter head.

6. A thin-walled metal part for a fingerprint recognition module, characterized in that: The metal thin-walled part includes a thin-walled body having opposite front side areas and back side areas, and a first connecting point and a second connecting point. The first connecting point and the second connecting point are symmetrically arranged at the two ends of the back side area of ​​the thin-walled body, and the first connecting point and the second connecting point are respectively connected to the raw material profile.

7. The metal thin-walled member for a fingerprint recognition module according to claim 6, characterized in that: The thin-walled body includes a shell body with a hollow groove, and the hollow groove runs through the front side area and the back side area. The front side area and the back side area are respectively located on both sides of the shell body. A first support part with a first give way groove and a second support part with a second give way groove are respectively provided in the back side area. The first connecting point is connected to the first supporting part, and the second connecting point is connected to the second supporting part.

8. The metal thin-walled member for a fingerprint recognition module according to claim 7, characterized in that: The projection of the first connecting point on the first supporting part in a direction close to the first supporting part is located on the first supporting part, and the projection of the second connecting point on the second supporting part in a direction close to the second supporting part is located on the second supporting part.

9. The metal thin-walled member for a fingerprint recognition module according to claim 6, characterized in that: The widths of the first connecting point and the second connecting point are both less than or equal to 0.15 mm, and the lengths of the first connecting point and the second connecting point are both less than or equal to 0.3 mm.

10. An electronic device for a thin-walled metal part of a fingerprint recognition module, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the following steps are implemented: S1. Fixing the raw material profile at a primary clamping position of a CNC machine, and forming the front and side areas of the thin-walled body on the raw material profile at the same clamping position by CNC machining; S2. Using a T-shaped milling cutter to process the back side area of ​​the thin-walled body, and retaining a first connecting point and a second connecting point at both ends of the back side area, respectively, the first connecting point and the second connecting point being respectively connected to the raw material profile to provide processing support, wherein step S1 and step S2 are completed in the same clamping position; S3, breaking the first connecting point and the second connecting point by a pneumatic material removal jig to remove the thin-walled body; S4. Batch grinding to remove residual protrusions at the first connecting point and the second connecting point on the thin-walled body respectively.

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