Adaptive Multi-Curvature Mobile Phone Metal Frame Integrated Precision Machining Device

Abstract

This invention relates to the field of mobile phone frame processing technology, specifically to an integrated precision machining device for adaptive multi-curvature mobile phone metal frames. The device includes a worktable, a support frame mounted on the worktable, and a machining unit mounted above the support frame. A mounting base is installed on the side of the support frame, and a clamping and positioning unit is mounted on the mounting base via a second drive mechanism. Clamping mechanisms are respectively located on both sides of the clamping and positioning unit on the mounting base. This invention utilizes two clamping mechanisms to clamp both ends of a first U-shaped component. Two clamping arms abut against the inner walls at the two rounded corners of the first U-shaped component, achieving clamping and positioning of the side frame. The clamping points are distributed at both ends of the first U-shaped component and on the inner walls at the two rounded corners, without obstructing the slotting or opening positions. Simultaneously, it does not obstruct or interfere with the tool when it feeds through the first U-shaped component. Compared to traditional fixtures, it eliminates the need for frequent clamping position adjustments, improving processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of mobile phone frame processing technology, specifically to an integrated precision machining device for adaptive multi-curvature mobile phone metal frames. Background Technology

[0002] The phone's outer frame refers to the structural components surrounding the phone's screen and back panel, serving to support, protect, and decorate it. It provides stable physical support for the phone's internal electronic components. (See the instruction manual.) Figure 12 As shown, this is a mobile phone frame in the prior art, which consists of a side frame 01 and a frame plate 02. The side frame 01 is snapped onto the outer periphery of the frame plate 02 in a wrap-around manner. In order to ensure that the side frame 01 can be smoothly installed on the frame plate 02, the side frame 01 is assembled separately from a first U-shaped part 011 and a second U-shaped part 012. The difference between the two is that the first U-shaped part 011 is longer than the second U-shaped part 012, and the first U-shaped part 011 has two rounded corners 0111.

[0003] The first U-shaped component 011 requires grooving, such as for volume keys, microphone holes, and power keys. These grooves are primarily located around the periphery of the first U-shaped component 011. Traditional grooving and hole-making equipment uses clamps to position and fix the first U-shaped component 011, ensuring stability during grooving. Typically, the clamping position is on the outer surface of the first U-shaped component 011, which overlaps with the areas requiring grooving or hole-making, causing obstruction and interference. Therefore, during processing, the clamping position needs to be constantly adjusted to make room for grooving and hole-making, resulting in long processing times and low efficiency. Furthermore, while dedicated clamps can be used to clamp non-grooving / hole-making areas on the outer surface of the first U-shaped component 011, the grooving / hole-making positions vary between different models of the first U-shaped component 011, making a single set of dedicated clamps unsuitable for different products. Therefore, multiple sets of dedicated clamps are required, undoubtedly increasing production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a precision machining device for an integrated metal frame of a mobile phone that can adapt to multiple curvatures, in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] An adaptive multi-curvature mobile phone metal frame integrated precision machining device includes a worktable, a stand on the worktable, and a machining unit on the stand. A mounting base is installed on the side of the stand, and a clamping and positioning unit is provided on the mounting base through a second drive mechanism. Clamping mechanisms are respectively provided on both sides of the clamping and positioning unit on the mounting base. The second drive mechanism is used to drive the clamping and positioning unit to feed and retract along the length direction of the first U-shaped part. The clamping and positioning unit includes an end seat on the side of the mounting base, swing arms respectively installed on both sides of the end seat, and clamping arms respectively installed at the ends of the swing arms. The two clamping mechanisms clamp the two ends of the first U-shaped part, and the two clamping arms respectively clamp on the inner wall at the two arc corners of the first U-shaped part, realizing the clamping and positioning of the side frame, and the clamping position will not obstruct the slot and opening position.

[0007] Two clamping mechanisms are used to clamp the two ends of the first U-shaped part respectively, and two clamping arms abut against the inner walls at the two rounded corners of the first U-shaped part to achieve clamping and positioning of the side frame. The clamping points are distributed at the two ends of the first U-shaped part and the inner walls at the two rounded corners, which will not obstruct the slotting and opening positions. At the same time, it will not obstruct or interfere with the tool when the tool feeds through the first U-shaped part. Compared with traditional fixtures, there is no need to frequently adjust the clamping position, thus improving processing efficiency.

[0008] Preferably, both swing arms have grooves at their ends, and rotating rods are rotatably installed in both grooves. The two locking arms are respectively fixedly fitted onto the corresponding rotating rods to achieve hinge connection. Both ends of the locking arms are fixed with support rollers that press against the inner wall at the arc corner.

[0009] Preferably, the clamping mechanism includes a C-shaped seat on the side of the mounting base, a cylinder A fixed on one side of the C-shaped seat, and a clamping plate inside the C-shaped seat. The telescopic rod of the cylinder A extends through into the C-shaped seat and is fixedly connected to the clamping plate. Buffer pads are provided on the inner wall of the C-shaped seat and on the clamping surface of the clamping plate.

[0010] Preferably, a shaft is rotatably mounted on the top of the support frame, with an L-shaped connecting arm fixed to one end of the shaft. A mounting seat is fixed to the end of the L-shaped connecting arm. The support frame is provided with a fourth drive mechanism for driving the shaft to rotate. The fourth drive mechanism includes a fixed seat, a drive motor D, a worm gear and a worm wheel B. The drive motor D is fixed to the support frame by the fixed seat, the worm gear is fixed to the output shaft of the drive motor D, and the worm wheel B is fixed to the shaft and meshes with the worm gear.

[0011] Preferably, the top of the workbench is provided with a dual-axis moving assembly, and the upright is set on the dual-axis moving assembly. The dual-axis moving assembly includes a second power guide rail and a pair of first power guide rails. The two first power guide rails are symmetrically arranged on the workbench. Each of the two first power guide rails is provided with a first moving seat that can be adjusted to move forward and backward. The second power guide rail is fixed on the two first moving seats. The second power guide rail is provided with a second moving seat that can be adjusted to move left and right. The upright is vertically fixed on the top of the second moving seat.

[0012] Preferably, the second drive mechanism includes a U-shaped frame, a threaded rod, a drive motor B, and a movable plate. The U-shaped frame is fixed on the mounting base, the threaded rod is rotatably mounted on the U-shaped frame, the drive motor B is fixed on the U-shaped frame, and its output shaft is fixed to one end of the threaded rod. A guide rod is fixed on the U-shaped frame and arranged parallel to the threaded rod. The movable plate is slidably fitted on the guide rod and threadedly fitted onto the threaded rod through a threaded hole on it. Two connecting rods are fixed on the movable plate, and end seats are fixed on the ends of the two connecting rods.

[0013] Preferably, the mounting base is provided with a first driving mechanism for adjusting the two C-shaped seats to move away from or closer to each other. The first driving mechanism includes a bidirectional screw, a drive motor A, and a nut seat. The mounting base is provided with a pair of driving slots. The bidirectional screw is rotatably mounted on the mounting base and passes through the two driving slots. The drive motor A is fixed at one end of the mounting base and is fixed to one end of the bidirectional screw. Nut seats are slidably mounted in both driving slots. Both nut seats are threadedly fitted onto the bidirectional screw. The two C-shaped seats are respectively fixed on the corresponding nut seats.

[0014] Preferably, a rotating shaft is rotatably installed in the mounting slots at both ends of the end seat, and the two swing arms are respectively fixedly mounted on the corresponding rotating shafts. The end seat is provided with a third drive mechanism for driving the two swing arms to swing synchronously in opposite directions. The third drive mechanism includes a bracket A, a bidirectional worm gear and a drive motor C. The two brackets A are respectively fixed on the end seat, the bidirectional worm gear is rotatably installed between the two brackets A, the drive motor C is fixed on one of the brackets A, and the output shaft is fixed to one end of the bidirectional worm gear. Worm wheels A are fixedly mounted on both rotating shafts, and the two worm wheels A mesh with the bidirectional worm gear respectively.

[0015] Preferably, the machining unit includes a suspension mounted on the worktable, a three-axis moving assembly mounted on the suspension, and a cutting tool mounted below the three-axis moving assembly. The three-axis moving assembly is used to drive the cutting tool to adjust forward, backward, left, right, up, and down to achieve dynamic grooving and hole drilling operations.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0017] This invention utilizes two clamping mechanisms to clamp both ends of the first U-shaped component. Two clamping arms abut against the inner walls at the two rounded corners of the first U-shaped component to achieve clamping and positioning of the side frame. The clamping points are distributed at both ends of the first U-shaped component and on the inner walls at the two rounded corners, which will not obstruct the slotting and opening positions. At the same time, it will not obstruct or interfere with the tool when the tool feeds through the first U-shaped component. Compared with traditional fixtures, there is no need to frequently adjust the clamping position, thus improving processing efficiency.

[0018] This invention utilizes a clamping mechanism to clamp the end of the long side of the first U-shaped part, and uses a clamping arm to abut against the inner wall at the arc corner, which can provide effective support for the long side of the first U-shaped part from both sides, improve the force-bearing capacity of the first U-shaped part, ensure that the first U-shaped part will not bend or deform, thereby improving the processing accuracy and forming quality.

[0019] This invention mounts the clamping arm in a rotatable hinged manner on the end of the swing arm. When the clamping arm contacts the inner wall at the arc corner, it can adaptively rotate and adjust according to the curvature of the inner wall at the arc corner until both ends are in contact with the inner wall at the arc corner, providing two-point contact support and effectively ensuring the stability during clamping. At the same time, support rollers are set at both ends of the clamping arm, and the outer edge arc surface of the support rollers contacts the inner wall at the arc corner, which has good adaptability and reduces damage to the inner wall at the arc corner.

[0020] This invention, by setting a first driving mechanism, can drive the two clamping mechanisms to adjust the distance to adapt to different widths of the first U-shaped part. By setting a second driving mechanism, it can drive the clamping and positioning unit to feed and retract to adapt to different lengths of the first U-shaped part. By setting a third driving mechanism, it can adjust the swing of the two swing arms. Combined with the rotational hinge effect of the clamping arms, the two support rollers can adapt to the arc angles of different curvatures on different first U-shaped parts. Thus, this device can be used to clamp the first U-shaped parts of different products, has high versatility, does not require multiple sets of clamping fixtures, and reduces production input costs. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2 for Figure 1 The schematic diagram of the structure shown is omitted, omitting the hood.

[0023] Figure 3 for Figure 2 The diagram shows a partial structural feature.

[0024] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point C;

[0025] Figure 5 for Figure 3 The diagram of the workbench is omitted from the representation of the structure shown.

[0026] Figure 6 This is a schematic diagram of the clamping and positioning unit structure in this invention;

[0027] Figure 7 This is a detailed structural diagram of the clamping mechanism in this invention;

[0028] Figure 8 This is a schematic diagram of the end seat surface structure in the present invention;

[0029] Figure 9 A schematic diagram illustrating how this device is used to hold and position the first U-shaped component.

[0030] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point A in the middle;

[0031] Figure 11 for Figure 9 Enlarged schematic diagram of the structure at point B;

[0032] Figure 12 This is a schematic diagram of the outer frame structure of an existing mobile phone;

[0033] Figure 13 This is a detailed structural diagram of the side frame.

[0034] In the diagram: 01, side frame; 011, first U-shaped component; 0111, rounded corner; 012, second U-shaped component; 02, frame plate; 1, worktable; 11, machine cover; 12, upright frame; 13, shaft; 14, L-shaped connecting arm; 2, machining unit; 21, suspension; 22, three-axis moving assembly; 23, cutting tool; 3, mounting base; 31, first drive mechanism; 301, drive groove; 311, bidirectional screw; 312, drive motor A; 313, nut seat; 4, clamping mechanism; 41, C-shaped seat; 42, cylinder A; 43, clamping plate; 44, buffer pad; 5, second drive mechanism; 51, U-shaped... 52. Threaded rod; 53. Drive motor B; 54. Guide rod; 55. Moving plate; 56. Connecting rod; 6. End seat; 61. Swing arm; 611. Groove; 612. Rotating rod; 62. Clamping arm; 63. Support roller; 64. Rotating shaft; 7. Third drive mechanism; 71. Bracket A; 72. Bidirectional worm gear; 73. Drive motor C; 74. Worm wheel A; 8. Fourth drive mechanism; 81. Fixed seat; 82. Drive motor D; 83. Worm gear component; 84. Worm wheel B; 9. Dual-axis moving group; 91. First power guide rail; 92. First moving seat; 93. Second power guide rail; 94. Second moving seat. Detailed Implementation

[0035] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] Please see Figures 1-13 This invention provides an integrated precision machining device for adaptive multi-curvature mobile phone metal frames, including a worktable 1, a support frame 12, and a machining unit 2. A cover 11 is installed on the worktable 1, and the machining unit 2 and the support frame 12 are both located inside the cover 11. The cover 11 provides shielding protection during grooving and hole drilling, preventing the splashing of machining debris and accidental contact by personnel, thus improving the safety of machining. The machining unit 2 includes a suspension 21 installed on the worktable 1, a three-axis moving assembly 22 installed on the suspension 21, and a cutting tool 23 installed below the three-axis moving assembly 22. The three-axis moving assembly 22 is used to drive the cutting tool 23 to adjust forward, backward, left, right, up, and down to achieve dynamic grooving and hole drilling operations.

[0037] The cutting tool 23 rotates to cut the first U-shaped part 011. Under the drive of the three-axis moving group 22, it moves back and forth and left and right to realize the grooving and hole-making operation. The suspension 21, the three-axis moving group 22 and the cutting tool 23 all adopt existing technologies. The specific structure and working principle will not be described in detail.

[0038] A mounting base 3 is installed on the side of the upright frame 12. A clamping and positioning unit is provided on the mounting base 3 via a second drive mechanism 5. Clamping mechanisms 4 are respectively provided on both sides of the clamping and positioning unit on the mounting base 3. The second drive mechanism 5 is used to drive the clamping and positioning unit to feed and retract along the length direction of the first U-shaped piece 011. The clamping and positioning unit includes an end seat 6 provided on the side of the mounting base 3, swing arms 61 respectively installed on both sides of the end seat 6, and clamping arms 62 respectively installed at the ends of the swing arms 61.

[0039] The two clamping mechanisms 4 clamp the two ends of the first U-shaped part 011 and the second U-shaped part 012 respectively. Then, the second driving mechanism 5 works to drive the clamping and positioning unit to feed towards the short side of the first U-shaped part 011 until the two clamping arms 62 respectively abut against the inner wall of the two arc corners 0111 on the first U-shaped part 011 from the inside, thereby achieving clamping and positioning of the first U-shaped part 011 to ensure stability during slotting and hole processing.

[0040] Two clamping mechanisms 4 are used to clamp the two ends of the first U-shaped part 011 respectively, and two clamping arms 62 are used to abut against the inner wall of the two rounded corners 0111 of the first U-shaped part 011 respectively, so as to achieve clamping and positioning of the side frame 01. The clamping points are distributed on the two ends of the first U-shaped part 011 and the inner wall of the two rounded corners 0111, which will not block the slotting and opening positions. At the same time, when the tool 23 feeds through the first U-shaped part 011, it will not cause obstruction or interference to the tool 23. Compared with traditional fixtures, there is no need to frequently adjust the clamping position, thus improving processing efficiency.

[0041] Furthermore, since the first U-shaped part 011 has a U-shaped structure, when slotting and drilling are performed on the two long sides of the first U-shaped part 011, the long sides are prone to bending and deformation towards the U-shaped opening side due to excessive stress, which affects the processing accuracy and forming quality. By using the clamping mechanism 4 to clamp the end of the long side of the first U-shaped part 011 and using the clamping arm 62 to abut against the inner wall at the arc corner 0111, the long side of the first U-shaped part 011 can be effectively supported from both sides, improving the stress capacity of the first U-shaped part 011 and ensuring that the first U-shaped part 011 will not bend and deform, thereby improving the processing accuracy and forming quality.

[0042] Please see Figure 6 and Figure 8 Both swing arms 61 have grooves 611 at their ends, and rotating rods 612 are rotatably installed in both grooves 611. The two locking arms 62 are respectively fixedly fitted on the corresponding rotating rods 612 to achieve hinge connection. Both ends of the locking arms 62 are fixed with support rollers 63 that are pressed and cooperate with the inner wall at the arc angle 0111.

[0043] The clamping arm 62 is rotatably hinged to the end of the swing arm 61. When the clamping arm 62 abuts against the inner wall at the arc angle 0111, it can adaptively rotate and adjust according to the curvature of the inner wall at the arc angle 0111 until both ends abut against the inner wall at the arc angle 0111, providing two-point abutment support and effectively ensuring the stability during clamping. At the same time, support rollers 63 are set at both ends of the clamping arm 62, such as... Figure 11 As shown, the outer arc surface of the support roller 63 is used to contact the inner wall at the arc corner 0111, which has good adaptability and reduces damage to the inner wall at the arc corner 0111.

[0044] Please see Figure 6 and Figure 7 The clamping mechanism 4 includes a C-shaped seat 41 located on the side of the mounting base 3, a cylinder A42 fixed on one side of the C-shaped seat 41, and a clamping plate 43 located inside the C-shaped seat 41. The telescopic rod of the cylinder A42 extends through into the C-shaped seat 41 and is fixedly connected to the clamping plate 43. Buffer pads 44 are provided on the inner wall of the C-shaped seat 41 and on the clamping surface of the clamping plate 43.

[0045] The end of the first U-shaped piece 011 is inserted between the clamping plate 43 and one side of the C-shaped seat 41. The cylinder A42 extends, pushing the clamping plate 43 to press the end of the first U-shaped piece 011 against one side of the C-shaped seat 41, thus clamping the end of the first U-shaped piece 011. Furthermore, during clamping, if... Figure 10 As shown, the buffer pad 44 contacts the outer surface of the first U-shaped part 011, which plays a role in buffering protection and anti-slip, avoiding damage to the outer surface of the first U-shaped part 011 and improving the clamping firmness.

[0046] Please see Figure 3 , Figure 4 and Figure 5 A shaft 13 is rotatably mounted on the top of the support frame 12. One end of the shaft 13 is fixed with an L-shaped connecting arm 14. The mounting seat 3 is fixed on the end of the L-shaped connecting arm 14. The support frame 12 is provided with a fourth drive mechanism 8 for driving the shaft 13 to rotate. The fourth drive mechanism 8 includes a fixed seat 81, a drive motor D82, a worm gear 83, and a worm wheel B84. The drive motor D82 is fixed on the support frame 12 through the fixed seat 81. The worm gear 83 is fixed on the output shaft of the drive motor D82. The worm wheel B84 is fixed on the shaft 13 and meshes with the worm gear 83.

[0047] The drive motor D82 drives the worm gear 83 to rotate. The rotating worm gear 83 meshes with the drive worm wheel B84 and drives the shaft 13 to rotate. Under the connection of the L-shaped connecting arm 14, the L-shaped connecting arm 14 can swing, which in turn can drive the first U-shaped part 011 to rotate and change direction. That is, after the grooving and hole-making is completed on one long side of the first U-shaped part 011, the first U-shaped part 011 can be grooved and hole-made on the short side by driving the first U-shaped part 011 to face the tool 23. Then, the first U-shaped part 011 can be grooved and hole-made on the other long side by continuing to drive the first U-shaped part 011 to face the tool 23. This allows for the continuous and sequential completion of grooving and hole-making on the three sides of the first U-shaped part 011, further improving processing efficiency.

[0048] The top of the workbench 1 is equipped with a dual-axis moving assembly 9, and the upright frame 12 is set on the dual-axis moving assembly 9. The dual-axis moving assembly 9 includes a second power guide rail 93 and a pair of first power guide rails 91. The two first power guide rails 91 are symmetrically arranged on the workbench 1. Each of the two first power guide rails 91 is equipped with a first moving seat 92 that can be adjusted to move forward and backward. The second power guide rail 93 is fixed on the two first moving seats 92. The second power guide rail 93 is equipped with a second moving seat 94 that can be adjusted to move left and right. The upright frame 12 is vertically fixed on the top of the second moving seat 94.

[0049] The first moving seat 92, driven by the first power guide rail 91, can move the first U-shaped part 011 back and forth. The second moving seat 94, driven by the second power guide rail 93, can move the first U-shaped part 011 left and right. This works in conjunction with the three-axis movement effect provided by the three-axis movement group 22 for the tool 23, ensuring that the tool 23 can effectively reach the required machining position on the first U-shaped part 011, further ensuring the precision of the machining.

[0050] Since the dimensions and curvature at the arc angle 011 of the first U-shaped component 011 are uniformly distributed across different products, to ensure that this device can adaptably hold the first U-shaped component 011 of different products, please refer to [the relevant documentation / reference]. Figure 6 and Figure 8The present invention makes the following design:

[0051] The second drive mechanism 5 includes a U-shaped frame 51, a threaded rod 52, a drive motor B53, and a moving plate 55. The U-shaped frame 51 is fixed on the mounting base 3. The threaded rod 52 is rotatably mounted on the U-shaped frame 51. The drive motor B53 is fixed on the U-shaped frame 51, and its output shaft is fixed to one end of the threaded rod 52. A guide rod 54 is fixed on the U-shaped frame 51 and arranged parallel to the threaded rod 52. The moving plate 55 is slidably fitted on the guide rod 54 and threadedly fitted on the threaded rod 52 through the threaded hole on it. Two connecting rods 56 are fixed on the moving plate 55, and an end seat 6 is fixed on the ends of the two connecting rods 56.

[0052] The drive motor B53 operates, and its output shaft drives the threaded rod 52 to rotate. The rotating threaded rod 52 drives the moving plate 55 to move and adjust along the guide rod 54. Under the connection of the connecting rod 56, it drives the end seat 6 to move synchronously, thereby driving the two clamping arms 62 to adjust synchronously, realizing the feeding and retraction of the clamping arms 62, and at the same time, it can adapt to the first U-shaped piece 011 of different lengths.

[0053] The mounting base 3 is provided with a first drive mechanism 31 for adjusting the two C-shaped seats 41 to move away from or closer to each other. The first drive mechanism 31 includes a bidirectional screw 311, a drive motor A312, and a nut seat 313. The mounting base 3 is provided with a pair of drive slots 301. The bidirectional screw 311 is rotatably mounted on the mounting base 3 and passes through the two drive slots 301. The drive motor A312 is fixed at one end of the mounting base 3 and is fixed to one end of the bidirectional screw 311. The nut seat 313 is slidably mounted in both drive slots 301. The two nut seats 313 are threadedly fitted onto the bidirectional screw 311. The two C-shaped seats 41 are respectively fixed on the corresponding nut seats 313.

[0054] The drive motor A312 operates, and its output shaft drives the bidirectional screw 311 to rotate. The rotating bidirectional screw 311 drives the two nut seats 313 to move closer or further apart, thereby driving the two clamping mechanisms 4 to adjust synchronously to adapt to the changes in the distance between the two long sides of the first U-shaped part 011.

[0055] A rotating shaft 64 is rotatably mounted in the mounting slots at both ends of the end seat 6. Two swing arms 61 are respectively fixedly mounted on the corresponding rotating shafts 64. The end seat 6 is provided with a third drive mechanism 7 for driving the two swing arms 61 to swing synchronously in opposite directions. The third drive mechanism 7 includes a bracket A71, a bidirectional worm gear 72 and a drive motor C73. The two brackets A71 are respectively fixed on the end seat 6. The bidirectional worm gear 72 is rotatably mounted between the two brackets A71. The drive motor C73 is fixed on one of the brackets A71, and its output shaft is fixed to one end of the bidirectional worm gear 72. Worm gears A74 are fixedly mounted on both rotating shafts 64, and the two worm gears A74 mesh with the bidirectional worm gear 72 respectively.

[0056] The drive motor C73 operates, and its output shaft drives the bidirectional worm gear 72 to rotate. The rotating bidirectional worm gear 72 meshes with and drives the two worm wheels A74, which in turn drives the two rotating shafts 64 to rotate respectively. This in turn drives the two swing arms 61 to rotate in opposite directions, and the two swing arms 61 rotate in the same amount. Combined with the feed or retraction drive of the end seat 6 by the second drive mechanism 5 and the adaptive adjustment effect of the hinged arm 62, the two support rollers 63 can adapt to the different curvatures of the arc angles 0111 on the first U-shaped parts 011.

[0057] In addition, the bidirectional worm gear 72 and the worm wheel A74 provide a unidirectional transmission effect, which can achieve a self-locking effect. When the non-drive motor C73 is not working, it ensures that the two rotating shafts 64 will not swing arbitrarily, which helps to maintain the rotation of the two swing arms 61, and thus ensures the stability of the support roller 63 when it contacts the inner wall at the arc angle 0111.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. An integrated precision machining device for an adaptive multi-curvature mobile phone metal frame, comprising a worktable (1), a support frame (12) mounted on the worktable (1), and a machining unit (2) mounted above the support frame (12), characterized in that: The support frame (12) is equipped with a mounting base (3) on its side. The mounting base (3) is provided with a clamping and positioning unit via a second drive mechanism (5). The mounting base (3) is provided with clamping mechanisms (4) on both sides of the clamping and positioning unit. The second drive mechanism (5) is used to drive the clamping and positioning unit to feed and retract along the length direction of the first U-shaped piece (011); The clamping and positioning unit includes an end seat (6) located on the side of the mounting base (3), swing arms (61) respectively installed on both sides of the end seat (6), and clamping arms (62) respectively installed at the ends of the swing arms (61). Among them, the two clamping mechanisms (4) clamp the two ends of the first U-shaped piece (011) respectively, and the two clamping arms (62) respectively clamp on the inner wall at the two arc corners (0111) of the first U-shaped piece (011) to realize the clamping and positioning of the side frame (01), and the clamping position will not block the slot opening position. Both swing arms (61) have grooves (611) at their ends, and rotating rods (612) are rotatably installed in both grooves (611). The two clamping arms (62) are respectively fixedly fitted onto the corresponding rotating rods (612) to achieve hinge connection; Both ends of the clamp arm (62) are fixed with support rollers (63) that are pressed against the inner wall at the arc corner (0111). Rotating shafts (64) are rotatably installed in the mounting slots at both ends of the end seat (6), and the two swing arms (61) are respectively fixedly mounted on the corresponding rotating shafts (64). The end seat (6) is provided with a third drive mechanism (7) for driving the two swing arms (61) to swing synchronously in opposite directions. The third drive mechanism (7) includes a bracket A (71), a bidirectional worm gear (72), and a drive motor C (73). The two brackets A (71) are respectively fixed on the end seat (6), and the bidirectional worm gear (72) is rotatably installed between the two brackets A (71); The drive motor C (73) is fixed on one of the brackets A (71), and the output shaft is fixed to one end of the bidirectional worm gear (72); Both of the aforementioned rotating shafts (64) are fixedly fitted with worm gears A (74), and the two worm gears A (74) mesh with the bidirectional worm (72) respectively.

2. The integrated precision machining device for adaptive multi-curvature mobile phone metal frames according to claim 1, characterized in that: The clamping mechanism (4) includes a C-shaped seat (41) provided on the side of the mounting base (3), a cylinder A (42) fixed on one side of the C-shaped seat (41), and a clamping plate (43) provided in the C-shaped seat (41). The telescopic rod of cylinder A (42) extends through into the C-shaped seat (41) and is fixedly connected to the clamping plate (43); Buffer pads (44) are provided on the inner wall of the C-shaped seat (41) and on the clamping surface of the clamping plate (43).

3. The integrated precision machining device for adaptive multi-curvature mobile phone metal frames according to claim 1, characterized in that: The top of the support frame (12) is rotatably mounted with a shaft (13), one end of which is fixed with an L-shaped connecting arm (14), and the mounting seat (3) is fixed on the end of the L-shaped connecting arm (14); The support frame (12) is provided with a fourth drive mechanism (8) for driving the shaft (13) to rotate. The fourth drive mechanism (8) includes a fixed base (81), a drive motor D (82), a worm gear (83), and a worm wheel B (84). The drive motor D (82) is fixed on the stand (12) by the fixed base (81), and the worm gear (83) is fixed on the output shaft of the drive motor D (82); The worm gear B (84) is fixed on the shaft (13) and meshes with the worm (83).

4. The integrated precision machining device for adaptive multi-curvature mobile phone metal frames according to claim 3, characterized in that: The workbench (1) is provided with a dual-axis moving assembly (9) on top, and the upright frame (12) is mounted on the dual-axis moving assembly (9); The dual-axis moving assembly (9) includes a second power guide rail (93) and a pair of first power guide rails (91). Two first power guide rails (91) are symmetrically arranged on the worktable (1), and each of the two first power guide rails (91) is provided with a first movable seat (92) that can be adjusted back and forth. The second power guide rail (93) is fixed on the two first movable seats (92). The second power guide rail (93) is provided with a second movable seat (94) that can be adjusted left and right. The stand (12) is vertically fixed on the top of the second movable seat (94).

5. The integrated precision machining device for adaptive multi-curvature mobile phone metal frames according to claim 1, characterized in that: The second drive mechanism (5) includes a U-shaped frame (51), a threaded rod (52), a drive motor B (53), and a moving plate (55); The U-shaped frame (51) is fixed on the mounting base (3), and the threaded rod (52) is rotatably mounted on the U-shaped frame (51); The drive motor B (53) is fixed on the U-shaped frame (51), and the output shaft is fixed to one end of the threaded rod (52); A guide rod (54) is fixed on the U-shaped frame (51) and is arranged parallel to the threaded rod (52). The movable plate (55) is slidably mounted on the guide rod (54) and threadedly fitted onto the threaded rod (52) through the threaded hole thereon; Two connecting rods (56) are fixed on the movable plate (55), and the end seat (6) is fixed on the ends of the two connecting rods (56).

6. The integrated precision machining device for adaptive multi-curvature mobile phone metal frames according to claim 2, characterized in that: The mounting base (3) is provided with a first drive mechanism (31) for driving the two C-shaped seats (41) to move away from each other or move closer to each other. The first drive mechanism (31) includes a bidirectional screw (311), a drive motor A (312), and a nut seat (313). The mounting base (3) is provided with a pair of drive slots (301), and the bidirectional screw (311) is rotatably mounted on the mounting base (3) and passes through the two drive slots (301). The drive motor A (312) is fixed to one end of the mounting base (3) and is also fixed to one end of the bidirectional screw (311); The nut seat (313) is slidably installed in both drive slots (301), and the two nut seats (313) are threadedly matched and fitted on the bidirectional screw (311); The two C-shaped seats (41) are respectively fixed on the corresponding nut seats (313).

7. The integrated precision machining device for adaptive multi-curvature mobile phone metal frames according to claim 1, characterized in that: The machining unit (2) of the machining machine includes a suspension (21) on the worktable (1), a three-axis moving assembly (22) on the suspension (21), and a cutting tool (23) below the three-axis moving assembly (22). The three-axis moving assembly (22) is used to drive the cutting tool (23) to adjust back, forth, left, right, up, and down to achieve dynamic operation of grooving and hole opening.

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