Metal bar double-end full-circumferential self-adaptive pulse current processing device and metal bar double-end full-circumferential self-adaptive pulse current processing method

Abstract

The invention discloses a metal bar double-end full-circumferential self-adaptive pulse current processing device and method, and relates to the technical field of electric pulse metal processing, and the metal bar double-end full-circumferential self-adaptive pulse current processing device comprises a copper woven belt electrically connected with a pulse power supply; the winding mechanism is connected with one end of the copper woven belt and used for winding or unwinding the copper woven belt; and the electrified clamping jaw mechanism is connected with the copper woven belt. The copper woven belt serves as an electrifying clamp of the metal bar, the copper woven belt is driven to expand or contract in the radial direction of the metal bar through the electrifying clamping jaw mechanism, the copper woven belt is driven to form the annular structure matched with the end of the metal bar in an enclosing mode, the device can be matched with the metal bars of various specifications, and the application range is wide. And in cooperation with the winding mechanism, the copper woven belt can wrap the end of the metal bar comprehensively in the circumferential direction, the influence of the skin effect and the like is avoided, and the uniformity of the pulse current effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electro-pulse metal processing, and in particular to a device and method for processing a metal bar with a double-end full circumferential adaptive pulse current. Background Art

[0002] During the forming and manufacturing process of metal components, problems such as non-uniform microstructure and many micro-defects are likely to occur. The regulation of the microstructure and the repair of micro-defects of metal components are beneficial to improving the fatigue performance and final service performance of the materials.

[0003] Pulse current processing technology uses the stimulating effect of high-energy pulsed electron flow to cause significant changes in the organizational structure and properties of materials, and can achieve the regulation of the microstructure of metal components, the optimization of mechanical properties and damage repair. However, the current pulse current processing technology for metal bars still has the following defects:

[0004] 1. The equipment for processing metal bars with pulse current using conductive clamps has poor versatility, and corresponding power-on jigs need to be replaced when processing bars with different diameters.

[0005] 2. For the equipment that uses a three-jaw chuck universal fixture to process metal bars with pulse current, its electrodes cannot achieve a full-wrapping effect, and due to the influence of the skin effect, etc., the action area of the pulse current is uneven.

[0006] In view of this, how to provide a device and method for processing a metal bar with pulse current that can partially or completely overcome the above defects is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of the present invention is to provide a device and method for processing a metal bar with a double-end full circumferential adaptive pulse current to solve the problems existing in the prior art.

[0008] To achieve the above purpose, the present invention provides a device for processing a metal bar with a double-end full circumferential adaptive pulse current, including:

[0009] A copper braid, electrically connected to a pulse power supply;

[0010] A winding mechanism, connected to one end of the copper braid, for winding or unwinding the copper braid;

[0011] A power-on jaw mechanism, connected to the copper braid, for driving the copper braid to expand or contract along the radial direction of the metal bar, and driving the copper braid to form an annular structure adapted to the end of the metal bar; when the copper braid expands along the radial direction of the metal bar, the winding mechanism unwinds the copper braid, and when the copper braid contracts along the radial direction of the metal bar, the winding mechanism winds the copper braid.

[0012] Furthermore, there are multiple energized jaw mechanisms which are evenly arranged at intervals along the circumferential direction of the metal bar. The energized jaw mechanism includes:

[0013] A first jaw, which is arranged at the output end of the cylinder. The cylinder is used to drive the first jaw to expand and contract along the radial direction of the metal bar.

[0014] A servo motor, which is arranged on the first jaw.

[0015] A second jaw and a third jaw, which are symmetrically arranged on the left and right sides of the first jaw. The servo motor is drivingly connected to the second jaw and the third jaw through a crank and connecting rod mechanism, and is used to drive the second jaw and the third jaw to approach or move away from the metal bar.

[0016] The cross-section of the copper braid is T-shaped. The bottoms of the first jaw, the second jaw and the third jaw are respectively provided with a first T-shaped groove, a second T-shaped groove and a third T-shaped groove. The copper braid is respectively slidably connected to the first T-shaped groove, the second T-shaped groove and the third T-shaped groove. The other end of the copper braid is fixedly connected to the third jaw of an energized jaw mechanism. The first jaw, the second jaw and the third jaw can drive the copper braid to form an annular structure adapted to the end of the metal bar.

[0017] Furthermore, the third jaw fixedly connected to the other end of the copper braid is close to the winding mechanism.

[0018] Furthermore, the crank and connecting rod mechanism includes:

[0019] A crank, which is connected to the output end of the servo motor.

[0020] A sliding member, which is rotatably connected to the crank.

[0021] A rocker, which defines a chute along its length direction. The sliding member is slidably connected to the chute. One end of the rocker is rotatably connected to the first jaw.

[0022] A connecting rod, which is rotatably connected to the other end of the rocker. The second jaw includes a first connecting rod and a first jaw portion which are integrally arranged. The length direction of the first jaw portion is the same as the expansion and contraction direction of the first jaw. The second T-shaped groove is arranged at the bottom of the first jaw portion. The first connecting rod and the first jaw portion are arranged at an obtuse angle and are slidably connected to the first jaw. The first connecting rod is rotatably connected to the connecting rod.

[0023] A sliding guide groove, the third claw includes an integrally provided second connecting rod and a second claw portion, the length direction of the second claw portion is the same as the telescopic direction of the first claw, and the third T-shaped groove is arranged at the bottom of the second claw portion; the second connecting rod and the second claw portion are arranged at an obtuse angle and are slidably connected to the first claw, the first connecting rod corresponds to the second connecting rod, and the first claw portion corresponds to the second claw portion; the sliding guide groove is arranged on the second connecting rod, a pulley is arranged on the first connecting rod, and the pulley is slidably connected to the sliding guide groove;

[0024] When the steering gear rotates forward, the first claw portion and the second claw portion approach and move away from the metal bar, and the first connecting rod and the second connecting rod slide upward relative to the first claw; when the steering gear rotates in reverse, the first claw portion and the second claw portion move away from and approach the metal bar, and the first connecting rod and the second connecting rod slide downward relative to the first claw.

[0025] Further, it further includes:

[0026] A bottom plate, on which the air cylinder is arranged;

[0027] A first base, arranged on the bottom plate, the first claw is slidably connected to the first base, and the winding mechanism is arranged on the first base; the first base has a positioning center, and the annular structure formed by the copper braid is concentric with the positioning center.

[0028] Further, it further includes:

[0029] A second base, on which the first base is arranged;

[0030] A frame, on which the pulse power supply is arranged; a first lead screw and a first guide rail are arranged on the frame, a first lead screw nut and a first slider are arranged at the bottom of the second base, the first lead screw is threadedly connected to the first lead screw nut, the first slider is slidably connected to the first guide rail, and the lead screw motor drives the first lead screw through a first synchronous belt; there are two groups of second bases, and the lead screw motor can drive the second base to slide along the first guide rail, so that the two groups of second bases approach or move away from each other, and the two ends of the metal bar are respectively arranged on the copper braids on the two groups of second bases.

[0031] Further, it further includes:

[0032] A bar support platform assembly, arranged on the frame and located between the two groups of second bases, and the bar support platform assembly is used to support and center the metal bar.

[0033] Further, the bar support platform assembly includes:

[0034] A V-shaped support frame is provided on the lifting platform to support and center the metal bars;

[0035] The translation platform is provided with a second guide rail and a second lead screw, the lifting platform is provided with a second slider and a second lead screw nut, the second slider is slidably connected to the second guide rail, and the second lead screw is threadedly connected to the second lead screw nut;

[0036] The first stepper motor is connected to the second lead screw through the second synchronous belt, and the first stepper motor is used to drive the lifting platform to move up and down in the vertical direction.

[0037] Furthermore, the frame is provided with a third guide rail and a third lead screw between the two groups of second bases, and a third slider and a third lead screw nut are provided at the bottom of the translation platform. The third slider is slidably connected to the third guide rail, and the third lead screw is threadedly connected to the third lead screw nut; the second stepper motor is transmission connected to the third lead screw through a coupling, and is used to drive the translation platform to slide between the two groups of second bases.

[0038] The present invention also provides a method for processing a metal bar with a double-end full-circumferential adaptive pulse current, using a metal bar double-end full-circumferential adaptive pulse current processing device, comprising the following steps:

[0039] S1: The preset inner diameter of the annular structure surrounded by the copper braided belt is larger than the outer diameter of the metal rod; the metal rod is placed centrally on the V-shaped support frame, and the position of the metal rod is adjusted by the first stepper motor and the second stepper motor so that the metal rod is concentric with the positioning center of the first base; the positions of the two groups of second bases are adjusted by the lead screw motor so that the V-shaped support frame is located in the middle position between the two groups of second bases, and the two ends of the metal rod correspond to the two annular structures surrounded by the copper braided belts respectively;

[0040] S2: Start the cylinder and the steering gear, and the annular structure surrounded by the copper braided belt shrinks from the outside to the inside until the copper braided belt is connected to the outer side surface of the end of the metal bar. At the same time, the winding mechanism winds up the copper braided belt until the copper braided belt is tightened and attached to the outer side surface of the end of the metal bar;

[0041] S3: Power the copper braided belt through a pulse power supply, and apply a pulse current to the metal rod;

[0042] S4: Start the cylinder and the steering gear again, and the annular structure surrounded by the copper braided belt will expand from the inside to the outside. At the same time, the reeling mechanism will unwind the copper braided belt and take out the processed metal rod.

[0043] The present invention discloses the following technical effects:

[0044] 1. The present invention uses a copper braided tape as the energizing fixture for the metal bar. The energizing jaw mechanism drives the copper braided tape to expand or contract along the radial direction of the metal bar, and drives the copper braided tape to form an annular structure adapted to the end of the metal bar, which can be adapted to metal bars of various specifications and has a wide range of applications; cooperating with the winding mechanism can enable the copper braided tape to completely wrap the end of the metal bar circumferentially, avoiding the influence of skin effect, etc., and ensuring the uniformity of the pulsed current action.

[0045] 2. The energizing jaw mechanism is arranged on the first base, and the first base is arranged on the second base and can slide along the frame, which can be adapted to metal bars of various lengths. The first base is provided with a positioning center, and the positioning center is concentric with both the metal bar and the copper braided tape, which is convenient for precise positioning.

[0046] 3. The bar support platform assembly is used to support and center the metal bar, and has the functions of lifting up and down and moving along the frame, further improving the application range of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0048] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 is a layout diagram of the energizing jaw mechanism;

[0050] Figure 3 is a schematic diagram of the structure of the energizing jaw mechanism;

[0051] Figure 4 is a schematic diagram of the structure of the bar support platform assembly;

[0052] Figure 5 is a schematic diagram of the annular structure formed by the copper braided tape;

[0053] Among them, 1. frame; 2. pulse power supply; 3. bottom plate; 4. first base; 5. winding mechanism; 6. first claw; 7. rocker; 8. slider; 9. crank; 10. connecting rod; 11. pulley; 12. second claw; 13. third claw; 14. sliding guide groove; 15. servo motor; 16. cylinder; 17. second lead screw nut; 18. second guide rail; 19. second slider; 20. first stepping motor; 21. second synchronous belt; 22. translation platform; 23. third guide rail; 24. third slider; 25. third lead screw nut; 26. third lead screw; 27. second stepping motor; 28. coupling; 29. second lead screw; 30. lifting platform; 31. micro electric cylinder; 32. V-shaped support frame; 33. second base; 34. first lead screw nut; 35. first slider; 36. copper braid; 37. first guide rail; 38. first synchronous belt; 39. first lead screw; 40. metal bar; 41. lead screw motor. Detailed implementation manners

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0055] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0056] An embodiment of the present invention provides a metal bar double-end full circumferential adaptive pulse current processing device, including:

[0057] A copper braid 36, electrically connected to the pulse power supply 2;

[0058] A winding mechanism 5, connected to one end of the copper braid 36, for winding or unwinding the copper braid 36. The rotating shaft of the winding mechanism 5 can be driven by a driving motor to rotate to realize winding and unwinding;

[0059] An energized claw mechanism, connected to the copper braid 36, for driving the copper braid 36 to expand or contract along the radial direction of the metal bar 40, and driving the copper braid 36 to form an annular structure adapted to the end of the metal bar 40; when the copper braid 36 expands along the radial direction of the metal bar 40, the winding mechanism 5 unwinds the copper braid 36, and when the copper braid 36 contracts along the radial direction of the metal bar 40, the winding mechanism 5 winds the copper braid 36.

[0060] In this embodiment, there are 3 energized claw mechanisms and they are evenly spaced along the circumferential direction of the metal bar 40. The energized claw mechanism includes:

[0061] The first clamping claw 6 is arranged on the output end of the cylinder 16, and the cylinder 16 is used to drive the first clamping claw 6 to extend and retract along the radial direction of the metal bar 40;

[0062] A steering gear 15 is arranged on the first claw 6;

[0063] The second clamping claw 12 and the third clamping claw 13 are symmetrically arranged on the left and right sides of the first clamping claw 6. The steering gear 15 is connected to the second clamping claw 12 and the third clamping claw 13 through a crank connecting rod mechanism, and is used to drive the second clamping claw 12 and the third clamping claw 13 to approach or move away from the metal bar 40.

[0064] The cross-section of the copper braided belt 36 is T-shaped, and the bottoms of the first claw 6, the second claw 12, and the third claw 13 are correspondingly provided with the first T-slot, the second T-slot, and the third T-slot. The copper braided belt 36 is slidingly connected to the first T-slot, the second T-slot, and the third T-slot respectively, and the other end of the copper braided belt 36 is fixedly connected to the third claw 13 of an energized claw mechanism; the T-shaped copper braided belt 36 cooperates with the T-slot to ensure that the copper braided belt 36 slides with each T-slot but does not fall off, and the first claw 6, the second claw 12, and the third claw 13 can drive the copper braided belt 36 to form an annular structure that matches the end of the metal rod 40.

[0065] In this embodiment, the third claw 13 fixedly connected to the other end of the copper braided belt 36 is close to the winding mechanism 5 .

[0066] In this embodiment, the crank-connecting rod mechanism comprises:

[0067] The crank 9 is connected to the output end of the steering gear 15;

[0068] A sliding member 8 is rotatably connected to a crank 9;

[0069] The rocker 7 defines a slide groove along the length direction, the sliding member 8 is slidably connected to the slide groove, and one end of the rocker 7 is rotatably connected to the first claw 6;

[0070] The connecting rod 10 is rotatably connected to the other end of the rocker 7. The second claw 12 includes a first connecting rod and a first claw portion that are integrally arranged. The length direction of the first claw portion is the same as the telescopic direction of the first claw 6. The second T-shaped groove is arranged at the bottom of the first claw portion. The first connecting rod is arranged at an obtuse angle with the first claw portion and is slidably connected to the first claw 6. The first connecting rod is rotatably connected to the connecting rod 10.

[0071] The sliding guide groove 14, the third claw 13 includes a second connecting rod and a second claw portion integrally provided, the length direction of the second claw portion is the same as the telescopic direction of the first claw 6, and the third T-shaped groove is provided at the bottom of the second claw portion; the second connecting rod and the second claw portion are arranged at an obtuse angle and are slidably connected to the first claw 6, the first connecting rod corresponds to the second connecting rod, and the first claw portion corresponds to the second claw portion; the sliding guide groove 14 is provided on the second connecting rod, a pulley 11 is provided on the first connecting rod, and the pulley 11 is slidably connected to the sliding guide groove 14;

[0072] When the servo 15 rotates forward, the first claw portion and the second claw portion approach and move away from the metal bar 40, and the first connecting rod and the second connecting rod slide upward relative to the first claw 6; when the servo 15 rotates reversely, the first claw portion and the second claw portion move away from and approach the metal bar 40, and the first connecting rod and the second connecting rod slide downward relative to the first claw 6.

[0073] In this embodiment, a through groove for slidably connecting the second claw 12 and the third claw 13 is provided in the middle of the first claw 6. During the forward and reverse rotation of the servo 15, the first connecting rod and the second connecting rod are always located within the through groove and will not disengage from the through groove. In some other embodiments, other sliding structures applicable to the first claw 6, the second claw 12, and the third claw 13 can also be provided.

[0074] In this embodiment, it further includes:

[0075] The bottom plate 3, the cylinder 16 is provided on the bottom plate 3;

[0076] The first base 4 is provided on the bottom plate 3, the first claw 6 is slidably connected to the first base 4, and the winding mechanism 5 is provided on the first base 4; the first base 4 has a positioning center, and the annular structure formed by the copper braid 36 is concentric with the positioning center.

[0077] In this embodiment, it further includes:

[0078] The second base 33, the first base 4 is provided on the second base 33;

[0079] The frame 1, the pulse power supply 2 is provided on the frame 1; a first lead screw 39 and a first guide rail 37 are provided on the frame 1, a first lead screw nut 34 and a first slider 35 are provided at the bottom of the second base 33, the first lead screw 39 is threadedly connected to the first lead screw nut 34, the first slider 35 is slidably connected to the first guide rail 37, and the lead screw motor 41 drives the first lead screw 39 through the first synchronous belt 38; there are two groups of second bases 33, and the lead screw motor 41 can drive the second bases 33 to slide along the first guide rail 37, so that the two groups of second bases 33 approach or move away from each other, and the two end heads of the metal bar 40 are respectively arranged on the copper braids 36 on the two groups of second bases 33.

[0080] In this embodiment, it further includes:

[0081] A bar support platform assembly, which is arranged on the frame 1 and located between two groups of second bases 33, and the bar support platform assembly is used to support and center the metal bar 40.

[0082] In this embodiment, the bar support platform assembly includes: a V-shaped support frame 32, a micro electric cylinder 31 is arranged on the lifting platform 30, and the V-shaped support frame 32 is arranged on the micro electric cylinder 31 for supporting and centering the metal bar 40;

[0083] A translation platform 22, which is provided with a second guide rail 18 and a second lead screw 29, and a second slider 19 and a second lead screw nut 17 are arranged on the lifting platform 30. The second slider 19 is slidably connected with the second guide rail 18, and the second lead screw 29 is threadedly connected with the second lead screw nut 17;

[0084] A first stepping motor 20 is drivingly connected with the second lead screw 29 through a second synchronous belt 21, and the first stepping motor 20 is used to drive the lifting platform 30 to move up and down in the vertical direction.

[0085] The first stepping motor 20 is used to quickly adjust the up and down position of the V-shaped support frame 32, and the micro electric cylinder 31 is used to accurately position the metal bar 40.

[0086] In this embodiment, a third guide rail 23 and a third lead screw 26 are arranged between two groups of second bases 33 on the frame 1. A third slider 24 and a third lead screw nut 25 are arranged at the bottom of the translation platform 22. The third slider 24 is slidably connected with the third guide rail 23, and the third lead screw 26 is threadedly connected with the third lead screw nut 25; A second stepping motor 27 is drivingly connected with the third lead screw 26 through a coupling 28, and is used to drive the translation platform 22 to slide between two groups of second bases 33.

[0087] The present invention also provides a method for processing a metal bar with a double-end full-circumferential adaptive pulse current, which is applied to a metal bar double-end full-circumferential adaptive pulse current processing device, and includes the following steps:

[0088] S1: The preset inner diameter of the annular structure formed by the copper braid 36 is greater than the outer diameter of the metal bar 40, so as to ensure that bars of each specification can be placed into the annular structure formed by the copper braid 36 before processing; The metal bar 40 is centered and placed on the V-shaped support frame 32. According to the specifications of the metal bar 40, parameters are set, and the position of the metal bar 40 is adjusted through the first stepping motor 20 and the second stepping motor 27, so that the metal bar 40 is concentric with the positioning center of the first base 4; The positions of two groups of second bases 33 are adjusted through the lead screw motor 41, so that the V-shaped support frame 32 is located at the middle position between two groups of second bases 33, and the two ends of the metal bar 40 respectively correspond to the annular structures formed by two copper braids 36;

[0089] S2: Start the cylinder 16 and the servo 15. The annular structure formed by the copper braid 36 shrinks from the outside to the inside until the copper braid 36 contacts the outer side surface of the end of the metal bar 40. At the same time, the winding mechanism 5 winds up the copper braid 36 until the copper braid 36 is tightened and attached to the outer side surface of the end of the metal bar 40; As Figure 3 shown, one end of the copper braid 36 is connected to the winding mechanism 5, and the other end is fixed to the uppermost third jaw 13. The second jaw 12 of the electrified jaw mechanism in the lower right is close to the third jaw 13, and there is a small gap between them for the copper braid 36 to be led out and connected to the winding mechanism 5. It should be noted that the influence of this gap on the wrapping of the copper braid 36 is very small and can be ignored.

[0090] S3: Supply power to the copper braid 36 through the pulse power supply 2. The positive pole of the pulse power supply 2 is electrically connected to the copper braid 36 at one end of the metal bar 40, and the negative pole of the pulse power supply 2 is electrically connected to the copper braid 36 at the other end of the metal bar 40 to apply a pulse current to the metal bar 40. The input power of the pulse power supply 2 is adjusted by the controller;

[0091] S4: Start the cylinder 16 and the servo 15 again. The annular structure formed by the copper braid 36 unfolds from the inside to the outside. At the same time, the winding mechanism 5 unwinds the copper braid 36 and takes out the processed metal bar 40.

[0092] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0093] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for processing a metal bar with a double-end full circumferential adaptive pulse current, characterized in that Comprising: A copper braided tape (36), electrically connected to a pulse power source (2); A winding mechanism (5), connected to one end of the copper braided tape (36) for winding or unwinding the copper braided tape (36); An energized jaw mechanism, connected to the copper braided tape (36), for driving the copper braided tape (36) to expand or contract along the radial direction of a metal bar (40), and driving the copper braided tape (36) to form an annular structure adapted to the end of the metal bar (40); when the copper braided tape (36) expands along the radial direction of the metal bar (40), the winding mechanism (5) unwinds the copper braided tape (36), and when the copper braided tape (36) contracts along the radial direction of the metal bar (40), the winding mechanism (5) winds the copper braided tape (36).

2. The dual-end full circumferential adaptive pulse current processing device for metal bars according to claim 1, characterized in that There are multiple of the energized jaw mechanisms and they are evenly spaced along the circumferential direction of the metal bar (40), and the energized jaw mechanism includes: A first jaw (6), arranged on the output end of a cylinder (16), and the cylinder (16) is used to drive the first jaw (6) to expand and contract along the radial direction of the metal bar (40); A servo motor (15), arranged on the first jaw (6); A second jaw (12) and a third jaw (13), symmetrically arranged on the left and right sides of the first jaw (6), and the servo motor (15) is connected to the second jaw (12) and the third jaw (13) through a crank and connecting rod mechanism for driving the second jaw (12) and the third jaw (13) to approach or move away from the metal bar (40); The cross-section of the copper braided tape (36) is T-shaped, and a first T-shaped groove, a second T-shaped groove and a third T-shaped groove are correspondingly arranged at the bottoms of the first jaw (6), the second jaw (12) and the third jaw (13), and the copper braided tape (36) is respectively slidably connected to the first T-shaped groove, the second T-shaped groove and the third T-shaped groove, and the other end of the copper braided tape (36) is fixedly connected to the third jaw (13) of an energized jaw mechanism; the first jaw (6), the second jaw (12) and the third jaw (13) can drive the copper braided tape (36) to form an annular structure adapted to the end of the metal bar (40).

3. A double-end full circumferential self-adaptive pulsed current processing device for metal bars according to claim 2, characterized in that The third jaw (13) fixedly connected to the other end of the copper braided tape (36) is close to the winding mechanism (5).

4. A device for processing a metal bar with a double-end full circumferential adaptive pulse current according to claim 3, characterized in that, The crank and connecting rod mechanism includes: A crank (9), connected to the output end of the servo motor (15); A sliding member (8), rotatably connected to the crank (9); A rocker (7), defining a sliding groove along its length direction, and the sliding member (8) is slidably connected to the sliding groove, and one end of the rocker (7) is rotatably connected to the first jaw (6); A connecting rod (10), rotatably connected to the other end of the rocker (7), the second jaw (12) includes a first connecting rod and a first jaw portion integrally arranged, and the length direction of the first jaw portion is the same as the expansion and contraction direction of the first jaw (6), and the second T-shaped groove is arranged at the bottom of the first jaw portion; the first connecting rod and the first jaw portion are arranged at an obtuse angle and are slidably connected to the first jaw (6), and the first connecting rod is rotatably connected to the connecting rod (10); A sliding guide groove (14), the third jaw (13) includes an integrally provided second connecting rod and a second jaw portion, the length direction of the second jaw portion is the same as the telescopic direction of the first jaw (6), and the third T-shaped groove is provided at the bottom of the second jaw portion; the second connecting rod and the second jaw portion are arranged at an obtuse angle and are slidably connected to the first jaw (6), the first connecting rod corresponds to the second connecting rod, and the first jaw portion corresponds to the second jaw portion; the sliding guide groove (14) is provided on the second connecting rod, a pulley (11) is provided on the first connecting rod, and the pulley (11) is slidably connected to the sliding guide groove (14); When the servo motor (15) rotates forward, the first jaw portion and the second jaw portion approach and move away from the metal bar (40), and the first connecting rod and the second connecting rod slide upward relative to the first jaw (6); when the servo motor (15) rotates in reverse, the first jaw portion and the second jaw portion move away from and approach the metal bar (40), and the first connecting rod and the second connecting rod slide downward relative to the first jaw (6).

5. A device for processing a metal bar by means of a double-ended full circumferential adaptive pulse current according to claim 4, characterized in that, Further comprising: A bottom plate (3), the cylinder (16) is provided on the bottom plate (3); A first base (4), which is provided on the bottom plate (3), the first jaw (6) is slidably connected to the first base (4), and the winding mechanism (5) is provided on the first base (4); the first base (4) has a positioning center, and the annular structure formed by the copper braid (36) is concentric with the positioning center.

6. The double-end full circumferential self-adaptive pulsed current processing device for metal bars according to claim 5, wherein Further comprising: A second base (33), the first base (4) is provided on the second base (33); A frame (1), the pulse power supply (2) is provided on the frame (1); a first lead screw (39) and a first guide rail (37) are provided on the frame (1), a first lead screw nut (34) and a first slider (35) are provided at the bottom of the second base (33), the first lead screw (39) is threadedly connected to the first lead screw nut (34), the first slider (35) is slidably connected to the first guide rail (37), and the lead screw motor (41) drives the first lead screw (39) through a first synchronous belt (38); there are two groups of the second bases (33), and the lead screw motor (41) can drive the second base (33) to slide along the first guide rail (37) so that the two groups of second bases (33) approach or move away from each other, and the two ends of the metal bar (40) are respectively arranged on the copper braids (36) on the two groups of second bases (33).

7. A device for processing a metal bar by means of a double-end full circumferential adaptive pulsed current according to claim 6, characterized in that, Further comprising: A bar support platform assembly, which is provided on the frame (1) and is located between the two groups of second bases (33), and the bar support platform assembly is used to support and centrally position the metal bar (40).

8. A device for processing a metal bar with a double-end full circumferential adaptive pulse current according to claim 7, characterized in that, The bar support platform assembly includes: A V-shaped support frame (32), which is provided on the lifting platform (30) and is used to support and centrally position the metal bar (40); A translation stage (22) is provided with a second guide rail (18) and a second lead screw (29). A second slider (19) and a second lead screw nut (17) are provided on the lifting platform (30). The second slider (19) is slidably connected to the second guide rail (18), and the second lead screw (29) is threadedly connected to the second lead screw nut (17). A first stepping motor (20) is drivingly connected to the second lead screw (29) through a second synchronous belt (21). The first stepping motor (20) is used to drive the lifting platform (30) to move up and down in the vertical direction.

9. A device for processing a metal bar by a double-end full circumferential adaptive pulse current according to claim 8, characterized in that, Between two sets of second bases (33) of the frame (1), a third guide rail (23) and a third lead screw (26) are provided. A third slider (24) and a third lead screw nut (25) are provided at the bottom of the translation stage (22). The third slider (24) is slidably connected to the third guide rail (23), and the third lead screw (26) is threadedly connected to the third lead screw nut (25). A second stepping motor (27) is drivingly connected to the third lead screw (26) through a coupling (28) and is used to drive the translation stage (22) to slide between two sets of second bases (33).

10. A method for processing a metal bar with a double-ended full circumferential adaptive pulse current, characterized in that Applying the metal bar double-end full circumferential adaptive pulse current processing device according to claim 9, comprising the following steps: S1: The preset inner diameter of the annular structure formed by the copper braid (36) is greater than the outer diameter of the metal bar (40). The metal bar (40) is placed centrally on the V-shaped support frame (32). The position of the metal bar (40) is adjusted by the first stepping motor (20) and the second stepping motor (27) so that the metal bar (40) is concentric with the positioning center of the first base (4). The positions of two sets of second bases (33) are adjusted by the lead screw motor (41) so that the V-shaped support frame (32) is located at the middle position between two sets of second bases (33), and the two end heads of the metal bar (40) respectively correspond to the annular structures formed by two copper braids (36). S2: Start the cylinder (16) and the servo motor (15). The annular structure formed by the copper braid (36) contracts from the outside to the inside until the copper braid (36) contacts the outer side surface of the end head of the metal bar (40). At the same time, the winding mechanism (5) winds the copper braid (36) until the copper braid (36) is tensioned and attached to the outer side surface of the end head of the metal bar (40). S3: Supply power to the copper braid (36) through the pulse power supply (2) to apply a pulse current to the metal bar (40). S4: Start the cylinder (16) and the servo motor (15) again. The annular structure formed by the copper braid (36) expands from the inside to the outside. At the same time, the winding mechanism (5) unwinds the copper braid (36), and the processed metal bar (40) is taken out.

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