Metal punch forming equipment

Abstract

The invention relates to the related technical field of punch forming, and discloses metal punch forming equipment which comprises a rack assembly, a driving system, a die assembly, a guide mechanism, a punch detection module and a control system. The machine frame assembly comprises a horizontally-arranged bearing base and stand columns perpendicularly installed on the two sides of the base, and a fixing frame used for installing a driving system is arranged at the tops of the stand columns. Through combined arrangement of the rack assembly, the driving system, the die assembly, the guide mechanism, the stamping detection module and the control system, a stable forming system can be formed, and in the forming process, the problems of die centering and stress concentration are solved through a floating connection structure; and stamping vibration and temperature deformation are restrained through the arrangement of a composite guide mechanism, and the purpose of monitoring the stamping process in real time is achieved through an intelligent detection system.

Description

Technical Field

[0001] The invention relates to the technical field related to stamping and forming, in particular to a metal stamping and forming device. Background Art

[0002] Metal stamping is a processing method that uses a press and a die to apply external force to metal profiles to cause them to undergo plastic deformation or separation, thereby obtaining a workpiece of the desired shape and size.

[0003] Most of the existing metal stamping forming equipment will have the following problems during the processing process: the poor centering of the traditional rigid connection mold system leads to insufficient workpiece forming accuracy; the equipment life is shortened due to the impact vibration during the stamping process; and the process parameter adjustment during the forming of complex workpieces relies on experience. In order to solve these problems, a metal stamping forming equipment is proposed. Summary of the invention

[0004] The present invention provides a metal stamping forming device, which solves the problems in the above-mentioned background technology.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A metal stamping forming device, comprising a frame assembly, a drive system, a die assembly, a guide mechanism, a stamping detection module, and a control system;

[0007] The frame assembly comprises a horizontally arranged load-bearing base and columns vertically installed on both sides of the base, and a fixing frame for installing the drive system is provided on the top of the column;

[0008] The driving system comprises a hydraulic cylinder fixed to the top of the column and a transmission beam connected to the end of its piston rod;

[0009] The mold assembly comprises an upper mold base arranged at the bottom of the transmission beam and a lower mold base fixed on a base, and a floating connection structure is provided between the upper mold base and the transmission beam;

[0010] The guide mechanism comprises a precision rolling guide rail arranged inside the column and a guide slider fixedly connected to both ends of the transmission beam;

[0011] The stamping detection module includes a pressure sensor arranged on the upper die base and a displacement detector arranged on the lower die base;

[0012] The control system is electrically connected to the drive system and the stamping detection module;

[0013] The floating connection structure comprises a spherical washer group and an elastic compensation ring, and the output end of the stamping detection module is connected to an abnormal state alarm.

[0014] Preferably, the drive system adopts a servo electric cylinder and hydraulic composite drive structure.

[0015] Preferably, the spherical washer set of the floating connection structure is made of cemented carbide material, and the deviation of the spherical curvature radius is no more than 0.02 mm.

[0016] Preferably, the stamping detection module comprises a multi-channel data acquisition unit, which is provided with a vibration spectrum analysis module.

[0017] Preferably, two guide posts are provided on the top of the upper mold base, and the two guide posts extend upward through the fixing frame and slide vertically up and down along the fixing frame.

[0018] Preferably, a limiting plate for limiting the vertical sliding position of the guide column is also provided on the top of the guide column.

[0019] Preferably, a plurality of support pads for supporting the load-bearing base are provided at the bottom of the load-bearing base.

[0020] Preferably, the lower mold base is embedded in the load-bearing base, and the interior is used to accommodate the molding material.

[0021] The advantages and positive effects of the present invention are: a stable molding system can be formed by the combined setting of the frame assembly, the drive system, the mold assembly, the guide mechanism, the stamping detection module, and the control system, and during the molding process, the problems of mold alignment and stress concentration are solved through the floating connection structure, and the stamping vibration and temperature deformation are suppressed through the setting of the composite guide mechanism, and the purpose of real-time monitoring of the stamping process is achieved through the intelligent detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 yes Figure 1 Schematic diagram of the module structure of the stamping detection module;

[0025] The symbols in the accompanying drawings are described as follows:

[0026] 1. Rack assembly; 11. Load-bearing base; 111. Support pad; 12. Column; 13. Fixed frame;

[0027] 2. Driving system; 21. Hydraulic cylinder; 22. Transmission beam;

[0028] 3. Mold assembly; 31. Upper mold base; 311. Guide column; 312. Limit plate; 32. Lower mold base; 33. Floating connection structure; 331. Spherical washer set; 332. Elastic compensation ring;

[0029] 4. Guide mechanism; 41. Precision rolling guide; 42. Guide slide;

[0030] 5. Stamping detection module; 51. Pressure sensor; 52. Displacement detector; 53. Abnormal state alarm; 54. Multi-channel data acquisition unit; 55. Vibration spectrum analysis module;

[0031] 6. Control system. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0034] Reference Figure 1 and Figure 2 As shown, metal stamping is a processing method that relies on a press and a die to apply external force to a metal profile to cause it to undergo plastic deformation or separation, thereby obtaining a workpiece of a desired shape and size. Most existing metal stamping equipment will have the following problems during processing: insufficient workpiece forming accuracy due to poor centering of the traditional rigid connection die system; shortened equipment life due to impact vibration during the stamping process; and the problem of relying on experience to adjust process parameters during the forming of complex workpieces. In order to solve these problems, a metal stamping equipment is proposed, including a frame assembly 1, a drive system 2, a die assembly 3, a guide mechanism 4, a stamping detection module 5, and a control system 6;

[0035] The frame assembly 1 comprises a horizontally arranged load-bearing base 11 and columns 12 vertically installed on both sides of the base, and a fixing frame 13 for installing the drive system 2 is provided on the top of the column 12;

[0036] The driving system 2 comprises a hydraulic cylinder 21 fixed to the top of the column and a transmission beam 22 connected to the end of its piston rod;

[0037] The mold assembly 3 comprises an upper mold base 31 disposed at the bottom of the transmission beam and a lower mold base 32 fixed on a base, and a floating connection structure 33 is provided between the upper mold base and the transmission beam;

[0038] The guide mechanism 4 comprises a precision rolling guide rail 41 arranged inside the column and a guide slider 42 fixedly connected to both ends of the transmission beam;

[0039] The stamping detection module 5 includes a pressure sensor 51 provided on the upper die holder and a displacement detector 52 provided on the lower die holder;

[0040] The control system 6 is electrically connected to the drive system and the stamping detection module;

[0041] The floating connection structure 33 includes a spherical washer group 331 and an elastic compensation ring 332. An abnormal state warning device 53 is connected to the output end of the stamping detection module 5. Through the combined setting of the frame assembly, drive system, die assembly, guiding mechanism, stamping detection module, and control system, a stable forming system can be formed. During the forming process, the floating connection structure is used to solve the problems of die centering and stress concentration. The compound guiding mechanism is also provided to suppress stamping vibration and temperature deformation, and the intelligent detection system is used to achieve the purpose of real-time monitoring of the stamping process.

[0042] It should be noted that the specific structure of the above floating connection structure is as follows: The floating connection structure 33 includes a spherical washer group 331 and an elastic compensation ring 332. An abnormal state warning device 53 is connected to the output end of the stamping detection module 5. Through the free rotation characteristic of the spherical contact surface, the upper die holder 31 is allowed to generate a deflection angle of ±0.5° to 2° in the X / Y plane, compensating for the parallelism deviation during die installation and eliminating the problem of unilateral contact of the die caused by the perpendicularity error of the frame column 12.

[0043] Furthermore, the superimposed design of multiple-layer spherical washers converts the concentrated stress generated by stamping into distributed stress, avoiding local plastic deformation, and particularly performing dynamic leveling for the asymmetric loads generated during metal sheet stamping.

[0044] Additionally, the core function of the elastic compensation ring 332, axial vibration damping, adopts a laminated composite structure of polymer elastic material and metal waveform, absorbing the instantaneous impact energy generated by the hydraulic drive system 2 and reducing the peak acceleration at the moment of stamping contact by 30% to 50%. Additionally, it also has the effect of micro-displacement compensation, providing an elastic stroke of 0.1 to 0.3 mm in the Z-axis direction to buffer the overload pressure at the end stage of stamping and prevent the rigid collision of the die caused by the springback of the metal material.

[0045] It should also be noted that the drive system 2 adopts a servo electric cylinder and hydraulic composite drive structure, which can ensure that the power of the entire drive system 2 is more stable.

[0046] Furthermore, the spherical washer group 331 of the floating connection structure 33 is made of cemented carbide material, and the deviation of its spherical curvature radius is not greater than 0.02 mm.

[0047] It is worth mentioning that the stamping detection module 5 includes a multi-channel data acquisition unit 54, which is provided with a vibration frequency spectrum analysis module 55; through the settings of the multi-channel data acquisition unit 54 and the vibration frequency spectrum analysis module 55, the purpose of effectively collecting and analyzing the vibration frequency spectrum during the metal stamping forming process can be achieved, and the purpose of adjusting the process parameters during the subsequent forming of complex workpieces can be ensured.

[0048] In addition, two guide columns 311 are provided at the top of the upper die base 31. The two guide columns 311 extend upward through the fixing frame 13 and slide vertically up and down along the fixing frame 13; through the setting of the guide columns 311, it can be ensured that the upper die base 31 slides orderly during the vertical lifting process, thereby ensuring the orderliness of stamping.

[0049] It should be noted that in order to prevent the guide columns 311 from sliding over the stroke, in this embodiment, a limiting plate 312 for vertically limiting the sliding of the guide columns 311 is further provided at the top of the guide columns 311; through the setting of the limiting plate 312, the guide columns 311 can slide orderly and within a certain stroke.

[0050] It should be added that during the dynamic working process of the floating connection structure 33, in the stamping preparation stage: the spherical washer group 331 is in a free state, allowing the upper die base 31 to adaptively adjust the horizontal posture; the pre-compression amount of the elastic compensation ring 332 is automatically set through the hydraulic system pressure value.

[0051] At the moment of stamping contact: the spherical washer group 331 undergoes a slight rotation, making the upper die base 31 form a surface contact with the surface of the sheet metal, and the radial stiffness of the elastic compensation ring 332 increases, suppressing lateral offset.

[0052] During the stamping pressure holding stage: the spherical washer locking mechanism is activated to fix the upper die base 31 at the working position, and the axial deformation of the elastic compensation ring 332 absorbs the overshoot energy of the hydraulic system.

[0053] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific embodiments. Any other embodiments obtained by those skilled in the art according to the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A metal stamping forming device, characterized in that: It comprises a frame assembly (1), a drive system (2), a mold assembly (3), a guide mechanism (4), a stamping detection module (5), and a control system (6); The frame assembly (1) comprises a horizontally arranged load-bearing base (11) and columns (12) vertically installed on both sides of the base, and a fixing frame (13) for installing the drive system (2) is provided on the top of the column (12); The driving system (2) comprises a hydraulic cylinder (21) fixed to the top of the column and a transmission beam (22) connected to the end of its piston rod; The mold assembly (3) comprises an upper mold base (31) arranged at the bottom of the transmission beam and a lower mold base (32) fixed on a base, and a floating connection structure (33) is provided between the upper mold base and the transmission beam; The guide mechanism (4) comprises a precision rolling guide rail (41) arranged inside the column and a guide slide block (42) fixedly connected to both ends of the transmission beam; The punching detection module (5) comprises a pressure sensor (51) arranged on the upper die base and a displacement detector (52) arranged on the lower die base; The control system (6) is electrically connected to the drive system and the stamping detection module; The floating connection structure (33) comprises a spherical gasket group (331) and an elastic compensation ring (332), and the output end of the stamping detection module (5) is connected to an abnormal state alarm (53).

2. A metal stamping forming equipment according to claim 1, characterized in that: The drive system (2) adopts a servo electric cylinder and hydraulic composite drive structure.

3. The metal stamping forming equipment according to claim 1, characterized in that: The spherical washer group (331) of the floating connection structure (33) is made of hard alloy material, and the deviation of the spherical curvature radius is no more than 0.02 mm.

4. The metal stamping forming equipment according to claim 1, characterized in that: The stamping detection module (5) comprises a multi-channel data acquisition unit (54), which is provided with a vibration spectrum analysis module (55).

5. The metal stamping forming equipment according to claim 1, characterized in that: Two guide columns (311) are provided on the top of the upper die seat (31), and the two guide columns (311) extend upward through the fixing frame (13) and slide vertically up and down along the fixing frame (13).

6. The metal stamping forming equipment according to claim 5, characterized in that: A limiting plate (312) for limiting the vertical sliding position of the guide column (311) is also provided on the top of the guide column (311).

7. The metal stamping forming equipment according to claim 1, characterized in that: A plurality of support pads (111) for supporting the load-bearing base (11) are provided at the bottom of the load-bearing base (11).

8. The metal stamping forming equipment according to claim 1, characterized in that: The lower mold base (32) is embedded in the load-bearing base (11), and the interior is used to accommodate molding material.

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