Hemming and punching all-in-one machine and machining method thereof

Abstract

The invention discloses a hemming and punching all-in-one machine which comprises a machine base, a lower hemming mechanism, an upper hemming mechanism and a punching mechanism, the lower hemming mechanism, the upper hemming mechanism and the punching mechanism are arranged on a working table top of the machine base, a main shaft assembly is vertically arranged on the machine base, the lower hemming mechanism is used for hemming the lower edge of a workpiece, and the upper hemming mechanism is used for hemming the upper edge of the workpiece. Hemming actions of the upper hemming mechanism and the lower hemming mechanism are carried out simultaneously; the punching mechanism comprises a punching frame and two punching assemblies which are distributed up and down and slidably connected with the punching frame, and the punching frame is provided with a punching driving part used for driving the two punching assemblies to be close to or away from each other. After the upper edge and the lower edge of the workpiece are curled, the punching driving part drives the two punching assemblies to get close to each other, and the two punching assemblies conduct punching action on the upper curled edge portion and the lower curled edge portion of the workpiece correspondingly. The machining method has the effect of improving the workpiece machining efficiency and machining precision.

Description

Technical Field

[0001] This application relates to the field of metal processing equipment, and in particular to an integrated edge-rolling and punching machine and its processing method. Background Technology

[0002] Currently, in manufacturing, the edge-rolling and punching processes for cylindrical metal workpieces are typically completed by two separate machines, or by manual assistance on the same machine sequentially. This separate processing model not only increases equipment investment costs and results in a larger production line footprint, but more importantly, it severely impacts overall production efficiency.

[0003] Currently, the two common solutions are single-process processing and multi-process line processing. Single-process processing refers to using dedicated edge-rolling machines and punching machines to complete their respective functions. The advantage of this method is its high specialization and simple maintenance, but it has poor adaptability to different product models and is complex to adjust when changing product specifications. The other option, multi-process line processing, integrates edge-rolling and punching functions on a single production line. Workpieces are fed sequentially into different workstations via an automatic conveyor belt. However, due to the coordination of multiple machines, repeated positioning and locking of workpieces are required, resulting in low processing efficiency and low precision. Therefore, there is still room for improvement. Summary of the Invention

[0004] In order to improve the efficiency and accuracy of workpiece processing, this application provides an integrated edge rolling and punching machine and its processing method.

[0005] The technical solution of the edge-rolling and punching integrated machine and its processing method provided in this application is as follows: A crimping and punching integrated machine includes a base and a lower crimping mechanism, an upper crimping mechanism, and a punching mechanism disposed on the worktable of the base. A spindle assembly is vertically disposed on the worktable of the base, and the spindle assembly is used to clamp the inner wall of the workpiece and drive the workpiece to rotate. The upper crimping mechanism, the lower crimping mechanism, and the punching mechanism are distributed around the spindle assembly. The lower crimping mechanism is used to crimp the lower edge of the workpiece, and the upper crimping mechanism is used to crimp the upper edge of the workpiece. The crimping actions of the upper crimping mechanism and the lower crimping mechanism are performed simultaneously. The punching mechanism includes a punching frame and two punching assemblies that are vertically distributed and slidably connected to the punching frame. The punching frame is provided with a punching drive member for driving the two punching assemblies closer to each other or further away from each other. After the upper and lower edges of the workpiece are crimped, the punching drive member drives the two punching assemblies closer to each other, and the two punching assemblies respectively perform punching actions on the upper and lower crimped parts of the workpiece.

[0006] By adopting the above technical solution, the spindle assembly, lower crimping mechanism, upper crimping mechanism, and punching mechanism are installed on the same machine base's worktable. The spindle assembly clamps the workpiece from its inner wall and drives it to rotate. Then, it works in conjunction with the upper and lower crimping mechanisms to perform crimping operations, which improves the crimping efficiency of the workpiece. After crimping, the two punching components of the punching mechanism move closer to each other to simultaneously complete the work on the upper and lower crimping parts of the workpiece. The spindle assembly can switch between different positions of the crimping parts to cooperate with the punching mechanism to complete all punching work. There is no need to repeatedly calibrate the workpiece position, which helps to improve the workpiece processing efficiency and processing accuracy.

[0007] Preferably, the worktable of the machine base is provided with a plurality of positioning components distributed around the spindle assembly, the positioning components being used to jointly support the workpiece to be processed.

[0008] By adopting the above technical solution, the workpiece to be processed is first supported by the positioning component, so that the workpiece to be processed is stabilized on the workpiece processing position on the machine base worktable, so that the spindle assembly can clamp the workpiece.

[0009] Preferably, the positioning assembly includes a positioning frame disposed on the worktable of the machine base, a lifting cylinder disposed on the positioning frame, and a horizontal lifting rod disposed at the telescopic end of the lifting cylinder, wherein the lifting cylinder is used to drive the horizontal lifting rod to move up and down.

[0010] By adopting the above technical solution, the workpiece to be processed is placed on a horizontal lifting rod of several positioning components, and then the height of the workpiece is adjusted by a lifting cylinder to facilitate the processing of workpieces of different lengths.

[0011] Preferably, the worktable of the machine base is provided with a plurality of mounting holes, which are distributed along the concentric diameter of the spindle assembly, and the positioning frame is provided with fasteners that are threaded into the mounting holes.

[0012] By adopting the above technical solution, mounting holes are provided on the worktable of the machine base so that the positioning frame can be locked onto the worktable of the machine base by fasteners. In addition, by providing multiple mounting holes and distributing them along the concentric circle diameter direction of the spindle assembly, the horizontal position of the positioning assembly can be adjusted according to the diameter of the workpiece, which helps to improve the applicability of the positioning assembly.

[0013] Preferably, the lower edge curling mechanism includes a lower edge curling seat that is horizontally slidably connected to the worktable of the machine base, a lower edge curling assembly that is vertically slidably connected to the lower edge curling seat, and a lower edge curling drive for driving the lower edge curling seat to move up and down. The worktable of the machine base is provided with a first horizontal drive for driving the lower edge curling seat to move closer to or further away from the spindle assembly.

[0014] By adopting the above technical solution, when performing bottom edge rolling on workpieces of different diameters, the position of the bottom edge rolling mechanism can be adjusted according to the diameter of the workpiece. The bottom edge rolling seat is moved to the lower edge position of the workpiece by the first horizontal drive component, and then the bottom edge rolling assembly is moved upward by the bottom edge rolling drive component, so that the bottom edge rolling assembly can perform edge rolling on the lower edge of the workpiece, which is beneficial to improving the applicability of the bottom edge rolling mechanism.

[0015] Preferably, the upper edge rolling mechanism includes a base horizontally slidably connected to the worktable of the machine base, an upper edge rolling seat horizontally slidably connected to the surface of the base, an upper edge rolling assembly vertically slidably connected to the upper edge rolling seat, and an upper edge rolling drive member for driving the upper edge rolling seat to move up and down. The worktable of the machine base is provided with a second horizontal drive member for driving the base to move closer to or away from the spindle assembly, and the base is provided with a third horizontal drive member for driving the upper edge rolling seat to move closer to or away from the spindle assembly.

[0016] By adopting the above technical solution, when performing edge curling on workpieces of different diameters, the position of the upper edge curling mechanism can be adjusted according to the diameter of the workpiece. The second horizontal drive unit drives the base to move to the upper edge of the workpiece, and then the upper edge curling drive unit drives the upper edge curling assembly to move downward, so that the upper edge curling assembly curls the upper edge of the workpiece. After the workpiece is processed, the position of the base is maintained, and the third horizontal drive unit drives the base to move away from the spindle assembly, so that the upper edge curling assembly is removed from above the workpiece, which facilitates the removal of the workpiece and the placement of the next workpiece to be processed with the same diameter. There is no need to frequently adjust and calibrate the position of the base, which helps to maintain the efficiency and accuracy of the upper edge curling mechanism when performing edge curling.

[0017] Preferably, the first and second horizontal drive components are horizontal lead screw transmission mechanisms, and the third horizontal drive component is a horizontal hydraulic cylinder.

[0018] By adopting the above technical solution, both the first and second horizontal drive components use horizontal screw transmission mechanisms to accurately control the positions of the upper and lower edge-rolling mechanisms. The third horizontal drive component uses a horizontal hydraulic cylinder, which drives the upper edge-rolling seat to reciprocate for an equal distance to facilitate the picking and placing of workpieces.

[0019] A processing method for an integrated edge-rolling and punching machine includes the following steps: S1: The workpiece to be processed is placed on several positioning components, and the spindle assembly clamps the inner wall of the workpiece. S2: Activate the first horizontal drive and the second horizontal drive to move the lower edge curling assembly of the lower edge curling mechanism below the lower edge of the workpiece to be processed, and to move the upper edge curling assembly of the upper edge curling mechanism above the upper edge of the workpiece to be processed, respectively. S3: Simultaneously start the upper edge curling drive and the lower edge curling drive, and the spindle assembly drives the workpiece to rotate. The upper edge curling assembly performs an edge curling operation on the upper edge of the workpiece to be processed to form an upper edge curling part, and the lower edge curling assembly performs an edge curling operation on the lower edge of the workpiece to be processed to form a lower edge curling part. S4: The spindle assembly stops rotating, and then the punching mechanism is started, so that the two punching components of the punching mechanism move closer to each other to simultaneously complete the punching work on the upper and lower rolled edge parts of the workpiece. Then, the spindle assembly is used to drive the workpiece to rotate a certain angle to switch to the next punching position. The punching mechanism continues to perform punching operations. The above steps are repeated until the punching operation of all holes is completed. S5: Activate the third horizontal drive to remove the upper edge curling assembly from above the workpiece, and then remove the workpiece that has been processed. S6: Repeat steps S1 to S5 until all workpiece processing operations are completed.

[0020] By adopting the above technical solution, the workpiece to be processed is lifted by the positioning component, stabilizing it in the workpiece processing position on the machine base worktable. Then, the workpiece is clamped by the spindle assembly. While the spindle assembly drives the workpiece to rotate, it also cooperates with the upper and lower edge-rolling mechanisms to perform edge-rolling operations. After edge-rolling, the two punching components of the punching mechanism move closer to each other to simultaneously complete the upper and lower edge-rolling work on the workpiece. The spindle assembly can switch different positions of the edge-rolling parts to cooperate with the punching mechanism to complete all punching work. After one workpiece is processed, the third horizontal drive component drives the base to move away from the spindle assembly, so that the upper edge-rolling component is removed from above the workpiece, facilitating the removal of the workpiece and the placement of the next workpiece of the same diameter. This eliminates the need for frequent adjustments and calibrations of the positions of various components, which helps to improve workpiece processing efficiency and accuracy.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The spindle assembly clamps the inner wall of the workpiece and drives it to rotate. Simultaneously, the upper and lower edge-rolling mechanisms perform edge-rolling operations, which improves the edge-rolling efficiency of the workpiece. After edge-rolling, the two punching components of the punching mechanism move closer to each other to simultaneously complete the upper and lower edge-rolling of the workpiece. The spindle assembly can switch the different positions of the edge-rolling parts to cooperate with the punching mechanism to complete all punching work. There is no need to repeatedly calibrate the workpiece position, which helps to improve the workpiece processing efficiency and processing accuracy. 2. Place the workpiece to be processed on the horizontal lifting rod of several positioning components, and then adjust the height of the workpiece by lifting cylinder to make it suitable for processing workpieces of different lengths; 3. When performing edge curling on workpieces of different diameters, the positions of the upper and lower edge curling mechanisms can be adjusted according to the diameter of the workpiece to perform the edge curling operation. In addition, after the processing of a workpiece is completed, the base is driven away from the spindle assembly by the third horizontal drive component to facilitate the removal of the workpiece and the placement of the next workpiece to be processed with the same diameter. There is no need to frequently adjust and calibrate the position of the base, which helps to maintain the efficiency and accuracy of the upper edge curling mechanism when performing edge curling. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an edge-rolling and punching integrated machine according to an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the positioning component in an edge-rolling and punching integrated machine according to an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the lower edge rolling mechanism in an edge rolling and punching integrated machine according to an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the upper edge rolling mechanism in an edge rolling and punching integrated machine according to an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the punching mechanism in an edge-rolling and punching integrated machine according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Machine base; 11. Mounting hole; 2. Positioning assembly; 21. Positioning frame; 22. Lifting cylinder; 23. Horizontal lifting rod; 3. Lower hemming mechanism; 31. Lower hemming seat; 32. Lower hemming assembly; 33. Lower hemming drive; 34. First horizontal drive; 4. Upper hemming mechanism; 41. Upper hemming seat; 42. Upper hemming assembly; 43. Upper hemming drive; 44. Base; 45. Third horizontal drive; 46. Second horizontal drive; 5. Punching mechanism; 51. Punching frame; 52. Punching assembly; 521. Slide; 522. Punching motor; 523. Drill bit; 53. Punching drive; 54. Fourth horizontal drive; 6. Spindle assembly; 7. Workpiece; 8. Handwheel. Detailed Implementation

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] This application discloses an integrated edge-rolling and punching machine, referring to... Figure 1The machine tool assembly includes a base 1 and a lower edge-rolling mechanism 3, an upper edge-rolling mechanism 4, and a punching mechanism 5 mounted on the worktable of the base 1. A spindle assembly 6 is installed in the middle of the worktable of the base 1. The spindle assembly 6 is vertically arranged and used to clamp the inner wall of the workpiece 7 and drive the workpiece 7 to rotate. In this embodiment, the workpiece 7 is a metal cylindrical structure used in a fan, including an inner cylinder and an outer cylinder. The upper and lower edges of the outer cylinder of the workpiece 7 need to be edge-rolled and punched. The spindle assembly 6 is a commonly used working part of a machine tool, with clamping and rotation functions, and will not be described in detail here. The upper edge-rolling mechanism 4, the lower edge-rolling mechanism 3, and the punching mechanism 5 are distributed around the spindle assembly 6. The lower edge-rolling mechanism 3 is used to roll the lower edge of the workpiece 7, and the upper edge-rolling mechanism 4 is used to roll the upper edge of the workpiece 7. The rolling actions of the upper edge-rolling mechanism 4 and the lower edge-rolling mechanism 3 are performed simultaneously. The punching mechanism 5 is used to punch the upper and lower edge-rolled parts of the workpiece 7.

[0030] Reference Figure 1 and Figure 2 In this embodiment, three positioning components 2 distributed around the spindle assembly 6 are installed on the worktable of the machine base 1. The positioning components 2 are used to jointly support the workpiece 7 to be processed. Specifically, the positioning components 2 include a positioning frame 21 set on the worktable of the machine base 1, a lifting cylinder 22 vertically fixed at the positioning frame 21, and a horizontal lifting rod 23 fixed at the telescopic end of the lifting cylinder 22. The workpiece 7 is supported by the horizontal lifting rod 23, so that the workpiece 7 to be processed is stabilized in the workpiece 7 processing position on the worktable of the machine base 1. Then, the horizontal lifting rod is driven up and down by the lifting cylinder 22 to adjust the height position of the workpiece 7 so that the spindle assembly 6 can clamp the workpiece 7.

[0031] In this embodiment, a plurality of mounting holes 11 are provided on the worktable surface of the base 1. The inner wall of the mounting holes 11 is provided with internal threads, and the plurality of mounting holes 11 are distributed along the concentric circle diameter direction of the spindle assembly 6. The positioning frame 21 is equipped with fasteners that are threaded into the mounting holes 11, specifically bolts. The horizontal position of the positioning assembly 2 can be adjusted according to the diameter of the workpiece 7, which is beneficial to improving the applicability of the positioning assembly 2.

[0032] Reference Figure 1 and Figure 3 In this embodiment, the lower edge rolling mechanism 3 includes a lower edge rolling seat 31 that is horizontally slidably connected to the worktable of the machine base 1, a lower edge rolling assembly 32 that is vertically slidably connected to the lower edge rolling seat 31, and a lower edge rolling drive member 33 for driving the lower edge rolling seat 31 to move up and down. A first horizontal drive member 34 for driving the lower edge rolling seat 31 to move closer to or away from the main spindle assembly 6 is provided on the worktable of the machine base 1.

[0033] Reference Figure 1 and Figure 4In this embodiment, the upper edge rolling mechanism 4 includes a base 44 that is horizontally slidably connected to the worktable of the machine base 1, an upper edge rolling seat 41 that is horizontally slidably connected to the surface of the base 44, an upper edge rolling assembly 42 that is vertically slidably connected to the upper edge rolling seat 41, and an upper edge rolling drive member 43 for driving the upper edge rolling seat 41 to move up and down. A second horizontal drive member 46 is provided on the worktable of the machine base 1 for driving the base 44 to move closer to or away from the spindle assembly 6, and a third horizontal drive member 45 is provided on the base 44 for driving the upper edge rolling seat 41 to move closer to or away from the spindle assembly 6.

[0034] Reference Figure 3 and Figure 4 The first horizontal drive component 34 and the second horizontal drive component 46 are both horizontal lead screw transmission mechanisms commonly used in machine tools, and are driven by the handwheel 8. The worktable surface of the machine base 1 is provided with scales to accurately observe the positions of the upper edge-curling mechanism 4 and the lower edge-curling mechanism 3. The third horizontal drive component 45 is a horizontal hydraulic cylinder, and the upper edge-curling seat 41 is fixedly connected to the telescopic end of the horizontal hydraulic cylinder.

[0035] Both the upper edge curling drive 43 and the lower edge curling drive 33 are commonly used vertical screw transmission mechanisms in machine tools, driven by a servo motor and a planetary reducer, with the output shaft of the planetary reducer connected by a coupling. Both the upper edge curling assembly 42 and the lower edge curling assembly 32 consist of a slider and a curling wheel. The vertical screw transmission mechanism enables the slider and curling wheel to press up or down, thereby curling the edge of the workpiece 7 into a circular arc.

[0036] Reference Figure 1 and Figure 5The punching mechanism 5 includes a punching frame 51 and two punching assemblies 52 vertically distributed and slidably connected to the punching frame 51. After the upper and lower edges of the workpiece 7 are rolled, the punching drive 53 drives the two punching assemblies 52 to move closer to each other, and the two punching assemblies 52 punch the upper and lower rolled edges of the workpiece 7 respectively. Each punching assembly 52 includes a slide 521 vertically slidably connected to the punching frame 51, a punching motor 522 mounted on the slide 521, and a drill bit 523 connected to the output shaft of the punching motor 522. The output shaft of the punching motor 522 is vertically arranged, and the drill bits 523 of the two punching assemblies 52 are arranged opposite each other. The punching frame 51 is equipped with the punching drive 53 for driving the two punching assemblies 52 closer to or further apart. The punching drive 53 consists of two independent vertical screw drive mechanisms, which independently drive the two slides 521 to move. In this embodiment, the punching frame 51 is slidably connected to the worktable surface of the machine base 1. The sliding direction of the punching frame 51 is consistent with the diameter direction of the concentric circle of the spindle assembly 6. The worktable surface of the machine base 1 is equipped with a fourth horizontal drive member 54 for driving the punching frame 51 to move closer to or further away from the spindle assembly 6. The fourth horizontal drive member 54 is a horizontal lead screw transmission mechanism commonly used in machine tools and is driven by a servo motor.

[0037] This application also discloses a processing method for an integrated edge-rolling and punching machine, including the following steps: S1: The workpiece 7 to be processed is placed on the horizontal lifting rod 23 of several positioning components 2, so that the workpiece 7 to be processed is stabilized on the workpiece 7 processing position on the worktable of the machine base 1. Then, the horizontal lifting rod is driven up and down by the lifting cylinder 22 to adjust the height position of the workpiece 7. Then the spindle assembly 6 clamps the workpiece 7.

[0038] S2: Activate the first horizontal drive 34 and the second horizontal drive 46 to move the lower edge curling assembly 32 of the lower edge curling mechanism 3 below the lower edge of the workpiece 7 to be processed, and move the upper edge curling assembly 42 of the upper edge curling mechanism 4 above the upper edge of the workpiece 7 to be processed. S3: Simultaneously start the upper edge curling drive 43 and the lower edge curling drive 33, and the spindle assembly 6 drives the workpiece 7 to rotate. The upper edge curling assembly 42 performs an edge curling operation on the upper edge of the workpiece 7 to be processed to form an upper edge curling part, and the lower edge curling assembly 32 performs an edge curling operation on the lower edge of the workpiece 7 to be processed to form a lower edge curling part. S4: The spindle assembly 6 stops rotating, and then the fourth horizontal drive 54 is activated, directing the two drill bits 523 of the punching mechanism 5 toward the upper and lower rolled edges of the workpiece 7, respectively. The punching mechanism 5 is then activated, causing the two punching assemblies 52 of the punching mechanism 5 to simultaneously punch the upper and lower rolled edges of the workpiece 7 in a close-to-close manner. The spindle assembly 6 then drives the workpiece 7 to rotate a certain angle to switch to the next punching position. The punching mechanism 5 continues the punching operation, repeating the above steps until all holes are punched. To ensure accurate punching positions each time, a linear laser can be installed on the top of the punching frame 51 to locate the punching position.

[0039] S5: Activate the fourth horizontal drive 54 to remove the punching mechanism 5 from the workpiece 7 as a whole. At the same time, activate the third horizontal drive 45 to remove the upper edge rolling assembly 42 from above the workpiece 7. Then, take the completed workpiece 7 out upwards.

[0040] S6: Repeat steps S1 to S5 until all workpieces 7 are processed.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A curling and punching integrated machine, characterized in that: The invention comprises a machine base (1) and a lower curling mechanism (3), an upper curling mechanism (4) and a punching mechanism (5) arranged on a working table of the machine base (1); a spindle assembly (6) is vertically arranged on the working table of the machine base (1); the spindle assembly (6) is used to clamp the inner wall of a workpiece (7) and drive the workpiece (7) to rotate; the upper curling mechanism (4), the lower curling mechanism (3) and the punching mechanism (5) are distributed around the spindle assembly (6); the lower curling mechanism (3) is used to curl the lower edge of the workpiece (7); the upper curling mechanism (4) is used to curl the upper edge of the workpiece (7); and the upper curling mechanism (5) is used to curl the upper edge of the workpiece (7). The curling actions of the edge mechanism (4) and the lower curling mechanism (3) are performed simultaneously; the punching mechanism (5) comprises a punching frame (51) and two punching assemblies (52) distributed up and down and slidably connected to the punching frame (51); the punching frame (51) is provided with a punching driving member (53) for driving the two punching assemblies (52) to move closer to or away from each other; when the curling of the upper edge and the lower edge of the workpiece (7) is completed, the punching driving member (53) drives the two punching assemblies (52) to move closer to each other, and the two punching assemblies (52) respectively perform a punching action on the upper curling part and the lower curling part of the workpiece (7).

2. The curling and punching integrated machine according to claim 1, characterized in that: A plurality of positioning assemblies (2) distributed around the spindle assembly (6) are arranged on the working table of the machine base (1), and the positioning assemblies (2) are used to jointly support the workpiece (7) to be processed.

3. The curling and punching integrated machine according to claim 2, characterized in that: The positioning assembly (2) comprises a positioning frame (21) arranged on the working surface of the machine base (1), a lifting cylinder (22) arranged at the positioning frame (21), and a horizontal lifting rod (23) arranged at the telescopic end of the lifting cylinder (22), wherein the lifting cylinder (22) is used to drive the horizontal lifting rod to move up and down.

4. The curling and punching integrated machine according to claim 3, characterized in that: A plurality of mounting holes (11) are provided on the working surface of the machine base (1), and the plurality of mounting holes (11) are distributed along the concentric circle diameter direction of the spindle assembly (6). The positioning frame (21) is provided with fasteners threadedly matched with the mounting holes (11).

5. The curling and punching integrated machine according to claim 2, characterized in that: The lower curling mechanism (3) comprises a lower curling seat (31) horizontally slidably connected to the working table of the machine base (1), a lower curling assembly (32) vertically slidably connected to the lower curling seat (31), and a lower curling driving member (33) for driving the lower curling seat (31) to move up and down. The working table of the machine base (1) is provided with a first horizontal driving member (34) for driving the lower curling seat (31) to move toward or away from the main shaft assembly (6).

6. The hemming and punching integrated machine according to claim 5, characterized in that: The upper curling mechanism (4) comprises a base (44) horizontally slidably connected to the working table of the machine base (1), an upper curling seat (41) horizontally slidably connected to the surface of the base (44), an upper curling assembly (42) vertically slidably connected to the upper curling seat (41), and an upper curling driving member (43) for driving the upper curling seat (41) to move up and down, a second horizontal driving member (46) for driving the base (44) to move toward or away from the main shaft assembly (6) is arranged on the working table of the machine base (1), and a third horizontal driving member (45) for driving the upper curling seat (41) to move toward or away from the main shaft assembly (6) is arranged on the base (44).

7. The hemming and punching integrated machine according to claim 6, characterized in that: The first horizontal driving member (34) and the second horizontal driving member (46) are horizontal screw transmission mechanisms, and the third horizontal driving member (45) is a horizontal oil cylinder.

8. A processing method of the curling and punching integrated machine as claimed in claim 6, characterized in that: The following steps are involved: S1: placing a workpiece (7) to be processed on a plurality of positioning assemblies (2), and clamping the inner wall of the workpiece (7) with a spindle assembly (6); S2: starting the first horizontal driving member (34) and the second horizontal driving member (46) to respectively move the lower curling assembly (32) of the lower curling mechanism (3) below the lower edge of the workpiece (7) to be processed, and to move the upper curling assembly (42) of the upper curling mechanism (4) above the upper edge of the workpiece (7) to be processed; S3: The upper curling drive member (43) and the lower curling drive member (33) are started simultaneously, and the spindle assembly (6) drives the workpiece (7) to rotate, the upper curling assembly (42) performs a curling operation on the upper edge of the workpiece (7) to be processed to form an upper curling portion, and the lower curling assembly (32) performs a curling operation on the lower edge of the workpiece (7) to be processed to form a lower curling portion; S4: the spindle assembly (6) stops rotating, and then the punching mechanism (5) is started, so that the two punching assemblies (52) of the punching mechanism (5) are close to each other and simultaneously complete the punching operation of the upper curling part and the lower curling part of the workpiece (7), and then the spindle assembly (6) is used to drive the workpiece (7) to rotate a certain angle to switch to the next punching position, and the punching mechanism (5) continues the punching operation, and the above steps are repeated until the punching operation of all hole positions is completed; S5: starting the third horizontal driving member (45) to withdraw the upper curling assembly (42) from above the workpiece (7), and then taking out the processed workpiece (7); S6: Repeat steps S1 to S5 until all workpieces (7) are processed.

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