Device and method for spirally straightening rods and wires under assistance of pulse current

Abstract

The invention relates to the technical field of rod and wire rod straightening, and discloses a pulse current auxiliary rod and wire rod spiral straightening device and method.The pulse current auxiliary rod and wire rod spiral straightening device comprises a straightening frame and a plurality of straightening rollers, and the multiple straightening rollers can be spirally distributed on a rod and wire rod so that the multiple straightening rollers can straighten the rod and wire rod from a bent state to a linear state; the pair of conductive rollers is used for abutting against the rod wire. Positive electrodes of the multiple pulse power supplies are connected with the multiple straightening rollers respectively, negative electrodes of the multiple pulse power supplies are connected with the conductive rollers respectively, and the multiple straightening rollers, the multiple pulse power supplies, the conductive rollers and the rods and wires can form a parallel circuit used for introducing pulse current into the rods and wires; when a rod wire penetrates through the pair of conductive rollers, the conductive roller located above can be pushed to move, stable contact between the two conductive rollers and the rod wire is guaranteed through the arranged sliding blocks, and then stable electrification of a parallel circuit is guaranteed. The rod and wire straightening device conducts power-on auxiliary straightening on rods and wires, and the straightening effect of the rods and wires is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rod and wire straightening, and in particular to a pulse current assisted rod and wire spiral straightening device and method. Background Art

[0002] With the development of society and the advancement of science and technology, new requirements have been put forward for the large-scale, complex and integrated industrial equipment. The fused wire additive manufacturing process is guided by numerical models and gradually builds three-dimensional parts by adding materials layer by layer, providing unprecedented design freedom and manufacturing flexibility for the processing of complex parts. The characteristics of fused wire additive manufacturing technology, which is rapid melting and rapid solidification point by point, can cleverly break through the bottleneck of metallurgical / solidification defects such as coarse structure, macro-segregation, shrinkage and looseness in conventional large component casting. However, traditional rod and wire preparation technology is affected by factors such as processing technology and uneven material properties, and the phenomenon of excessive wire straightness and residual stress concentration is very common.

[0003] Pulse current assisted processing technology is a process in which high-frequency pulse current is passed through both ends of rods and wires, utilizing the electroplastic effect of pulse current. Pulse current can reduce the rolling force, drawing force or forging force required in the material processing process, thereby significantly improving the elongation and deformation capacity at low temperature and high strain rate, improving the uniformity of plastic deformation and dynamic recrystallization in the metal plastic processing process, delaying the formation of plastic instability and cracks, improving the surface quality of the finished product, and removing the residual stress of the finished product.

[0004] At present, there are still the following problems in the straightening process of rods and wires: 1. Rods and wires are mostly stored and transported in reels. During the coiling process, the inside and outside of the rods and wires are subjected to different tensile and compressive stresses, so the rods and wires will bend. Some rods and wires have low yield strength, so they do not rebound sufficiently after unloading and still have certain bending phenomena, which affects their later use.

[0005] 2. The straightening rollers in the traditional rod and wire straightening process are mostly arranged horizontally and vertically, resulting in uneven distribution of straightening points during the straightening process and poor straightness of the finished rods and wires.

[0006] 3. The stress concentration caused by non-continuous defects such as inclusions, pores, cracks, etc. in the metal material itself, as well as the residual stress caused by the strong stretching, cold working, heat treatment and other processing techniques of the metal material will affect the normal use of the rod and wire.

[0007] 4. The traditional way of electrification is to apply current to the rod and wire through a single conductive roller. However, since the conductive roller and the rod and wire are in line contact and the contact area is small, the current density passing through is small and high-density current cannot be applied to the rod and wire.

[0008] 5. Due to the influence of the skin effect of the pulse current, the current is unevenly distributed on the rod and wire during the application of current, resulting in uneven distribution of the rod and wire structure and temperature field.

[0009] Therefore, there is an urgent need for a pulse current assisted rod and wire spiral straightening device and method to solve the above problems. Summary of the invention

[0010] The object of the present invention is to provide a device and method for spiral straightening of rods and wires assisted by pulse current, so as to solve the problems existing in the above-mentioned prior art.

[0011] To achieve the above object, the present invention provides the following solution: The present invention provides a pulse current assisted rod and wire spiral straightening device, comprising: frame; A pair of conductive rollers, arranged on the frame, and used to abut against the rods and wires; A rod and wire straightening mechanism, comprising a straightening frame, which is arranged on the frame, wherein the cross-sectional shape of the straightening frame is a polygon, so that the interior of the straightening frame has a plurality of inner side surfaces; A plurality of straightening rollers, each of which is used to abut against the rod and wire, and at least one straightening roller is arranged on the inner side of each straightening frame, so that the plurality of straightening rollers can be distributed on the rod and wire in a spiral shape, and the straightening rollers are rotatably matched with the straightening frame; Wherein, the rods and wires are controlled to pass through the inside of the straightening frame along the conveying direction so that the plurality of straightening rollers can straighten the rods and wires from a bent state to a straight state; A plurality of straightening roller supports, wherein at least one straightening roller support is disposed on the inner side surface of each straightening frame, and the straightening roller is rotatably connected to the straightening roller support; The cross section of the straightening frame is a regular octagon, and the number of the straightening rollers is at least eight; A plurality of pulse power supplies are respectively arranged on the frame, and the positive electrodes of the plurality of pulse power supplies are respectively connected to the plurality of straightening rollers, and the negative electrodes of the plurality of pulse power supplies are respectively connected to the conductive rollers, wherein the plurality of straightening rollers, the plurality of pulse power supplies, the conductive rollers and the rods and wires can form a parallel circuit for passing pulse current through the rods and wires.

[0012] According to the present invention, a pulse current assisted rod and wire spiral straightening device further includes: A bracket, fixedly connected to the frame; Two stepped copper shafts are rotatably connected to the upper and lower parts of the bracket, and the two conductive rollers are fixedly connected to one end of the two stepped copper shafts respectively; Two pairs of metal carbon brushes are respectively sleeved on the other ends of the two stepped copper shafts, the metal carbon brushes are connected with copper braided wires, and the metal carbon brushes are connected to the negative electrode of the pulse power supply.

[0013] According to a pulse current assisted rod and wire spiral straightening device provided by the present invention, a slider is slidably connected to the bracket, the stepped copper shaft located above is rotatably connected to the slider through a ceramic bearing, a top cover is provided at the top of the bracket, one end of the optical axis is fixedly connected to the top of the slider, and the other end of the optical axis passes through the top cover and slidably cooperates with the top cover; A first spring is sleeved on the optical axis, and two ends of the first spring are fixedly connected to the top cover and the slider respectively; When the rod and wire pass through a pair of the conductive rollers, the conductive roller located above can be pushed to compress the first spring.

[0014] According to a pulse current assisted rod and wire spiral straightening device provided by the present invention, the metal carbon brush located at the top is fixedly connected to the slider, and the metal carbon brush located at the bottom is fixedly connected to the bracket, and the metal carbon brush includes two carbon brush blocks, and the carbon brush blocks are in contact with the stepped copper shaft; The copper braided wire is fixedly connected between the two carbon brush blocks located on the same metal carbon brush, and the copper braided wire is fixedly connected between the two metal carbon brushes; One of the carbon brush blocks is connected to the negative electrode of the pulse power supply via an electric wire; A second spring is fixedly connected between the two carbon brush blocks on the same metal carbon brush.

[0015] According to a pulse current assisted rod and wire spiral straightening device provided by the present invention, two ceramic tubes are fixedly connected to the bracket, the two conductive rollers are located between the two ceramic tubes, and the rod and wire pass through the ceramic tubes.

[0016] According to a pulse current assisted rod and wire straightening device provided by the present invention, two rod and wire guide rollers are fixedly connected to the frame, and the rods and wires on the reels are guided and transported to the straightening frame by the two rod and wire guide rollers.

[0017] A method for spiral straightening of rods and wires assisted by pulse current, comprising the following steps: One end of the rod and wire is controlled to extend into the straightening frame and be straightened by a plurality of straightening rollers, and then the rod and wire are controlled to pass through a pair of conductive rollers and the conductive rollers are made to abut against the rod and wire, so that a plurality of straightening rollers, a plurality of pulse power supplies, the conductive rollers and the rod and wire can form a parallel circuit to adjust the parameters of the pulse power supply and perform pulse current assisted straightening on the rod and wire.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: 1. The present invention provides a rod and wire straightening mechanism, in which the rod and wire are extended into a straightening frame and straightened by a plurality of spirally arranged straightening members. The spirally distributed straightening members make the straightening points evenly distributed along the circumferential direction during the straightening process of the rod and wire, thereby improving the straightening effect of the rod and wire and effectively removing the oxide layer on the surface of the rod and wire.

[0019] 2. The present invention provides a pulse current assisted rod and wire straightening device, wherein a plurality of straightening rollers, a plurality of pulse power supplies, a conductive roller and a rod and wire form a parallel circuit, and pulse current is passed through the rod and wire to realize segmented electrification of the rod and wire. At the same time, when the rod and wire pass through a pair of conductive rollers, the conductive roller located above can be pushed to move, thereby ensuring stable contact between the two conductive rollers and the rod and wire, thereby ensuring stable electrification of the parallel circuit, and straightening is performed with the assistance of an electric field. Energization and straightening are performed simultaneously, and it is ensured that the matrix current is evenly distributed, and that the rod and wire can pass a high-density current, and the residual stress of the rod and wire can be effectively removed by the pulse current.

[0020] 3. The present invention provides a pulse current assisted spiral straightening method for rods and wires, which performs straightening with the assistance of an electric field, thereby improving the straightening effect of the rods and wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the straightening member of the present invention; Figure 3 is a cross-sectional view of the stent of the present invention; Figure 4 This is a schematic diagram of the support structure of the present invention; Figure 5 It is a schematic diagram of the structure of the energized clamp of the present invention; Among them, 1. frame; 2. straightening frame; 3. bracket; 4. straightening roller bracket; 5. straightening roller; 6. stepped copper shaft; 7. conductive roller; 8. metal carbon brush; 9. bottom plate; 10. copper braided wire; 11. slider; 12. ceramic bearing; 13. top cover; 14. optical axis; 15. first spring; 16. second spring; 17. ceramic tube; 18. pulse power supply; 19. rod and wire guide roller; 20. reel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figure 1-Figure 5 The present invention provides a pulse current assisted rod and wire spiral straightening device, comprising: Rack 1; A pair of conductive rollers 7 are arranged on the frame 1, and the pair of conductive rollers 7 are used to abut against the rods and wires; The rod and wire straightening mechanism comprises a straightening frame 2, which is arranged on the frame 1, and the cross-sectional shape of the straightening frame 2 is a polygon, so that the interior of the straightening frame 2 has a plurality of inner side surfaces; A plurality of straightening rollers 5, each of which is used to abut against the rod and wire, and at least one straightening roller 5 is arranged on the inner side of each straightening frame 2, so that the plurality of straightening rollers 5 can be distributed on the rod and wire in a spiral shape, and the straightening rollers 5 are rotatably matched with the straightening frame 2; The rods and wires are controlled to pass through the straightening frame 2 along the conveying direction, so that the plurality of straightening rollers 5 can straighten the rods and wires from a bent state to a straight state; A plurality of straightening roller supports 4, wherein at least one straightening roller support 4 is disposed on the inner side of each straightening frame 2, and a straightening roller 5 is rotatably connected to the straightening roller support 4; The cross section of the straightening frame 2 is a regular octagon, and the number of the straightening rollers 5 is at least eight; Multiple pulse power supplies 18 are respectively arranged on the frame 1, and the positive electrodes of the multiple pulse power supplies 18 are respectively connected to the multiple straightening rollers 5, and the negative electrodes of the multiple pulse power supplies 18 are respectively connected to the conductive rollers 7, wherein the multiple straightening rollers 5, the multiple pulse power supplies 18, the conductive rollers 7 and the rods and wires can form a parallel circuit for passing pulse current through the rods and wires.

[0025] In one embodiment of the present invention, a plurality of straightening rollers 5 are evenly arranged in a spiral curve in the straightening frame 2. When the rods and wires are wound by the winder, they are changed from a straight line to a curve, and there is a large amount of stress inside. After the rods and wires are spread out, they are still in a bent state. During the straightening process of the rods and wires, the straightening points are evenly distributed in the circumferential direction and are spirally distributed, which can twist the rods and wires to a greater extent, provide an all-round force to resist the bending of the rods and wires, make them fully straightened, and thus improve the straightening effect of the rods and wires. In addition, the spiral torsion provided by the plurality of straightening rollers 5 and the friction on the surface of the straightening rollers 5 effectively remove the oxide layer on the surface of the rods and wires.

[0026] In one embodiment of the present invention, referring to Figure 2 The straightening roller support 4 is mounted on the straightening frame 2 by bolts.

[0027] In one embodiment of the present invention, referring to Figure 2 The cross section of the straightening frame 2 is a regular octagon, and a plurality of straightening rollers 5 are installed corresponding to the side walls of the regular octagon and are arranged in a spiral distribution.

[0028] In one embodiment of the present invention, referring to Figure 1 The number of pulse power supplies 18 corresponds to the number of straightening roller supports 4. The positive electrodes of several pulse power supplies 18 are connected to several straightening roller supports 4 through wires to energize the straightening rollers 5. The negative electrodes of several pulse power supplies 18 are connected to the conductive rollers 7. Multiple straightening rollers 5, multiple pulse power supplies 18, conductive rollers 7 and rods and wires can form a parallel circuit to achieve segmented energization of the rods and wires, ensuring uniform current distribution in the matrix, and that the rods and wires can pass high-density current, and the residual stress of the rods and wires can be effectively removed by the pulse current.

[0029] Specifically, the principle is that the rod and wire are equivalent to the main circuit of the entire circuit, each power supply is equivalent to a branch of the circuit, the current of the parallel circuit main circuit is equal to the sum of the currents of each branch, and multiple small-range power supplies are used to energize the rod and wire with a large current density. After energization, the metal will be affected by the electroplastic effect, and the mechanical properties of the rod and wire will be improved to a certain extent, and a certain amount of residual stress will be removed.

[0030] As an optional implementation, it further includes: a bracket 3, fixedly connected to the frame 1; Two stepped copper shafts 6 are rotatably connected to the upper and lower parts of the bracket 3, and two conductive rollers 7 are fixedly connected to one end of the two stepped copper shafts 6; Two pairs of metal carbon brushes 8 are respectively sleeved on the other ends of the two stepped copper shafts 6 . The metal carbon brushes 8 are connected with copper braided wires 10 . The metal carbon brushes 8 are connected with the negative electrode of the pulse power supply 18 .

[0031] In one embodiment of the present invention, referring to Figure 3 , Figure 4 , Figure 5 The bracket 3 is fixedly connected to the frame 1 through the bottom plate 9, and the conductive roller 7 on the bracket 3 is connected to the metal carbon brush 8 through the stepped copper shaft 6. Through the contact between the two conductive rollers 7 and the rods and wires, the rods and wires are energized, so that current passes through the rods and wires.

[0032] As an optional embodiment, a slider 11 is slidably connected to the bracket 3, and the stepped copper shaft 6 located above is rotatably connected to the slider 11 through a ceramic bearing 12. A top cover 13 is provided at the top of the bracket 3, and one end of the optical axis 14 is fixedly connected to the top of the slider 11, and the other end of the optical axis 14 passes through the top cover 13 and slidably cooperates with the top cover 13; A first spring 15 is sleeved on the optical axis 14, and two ends of the first spring 15 are fixedly connected to the top cover 13 and the slider 11 respectively; When the rod wire passes through the pair of conductive rollers 7 , the conductive roller 7 located above can be pushed to compress the first spring 15 .

[0033] In one embodiment of the present invention, referring to Figure 3 The optical axis 14 slides on the top cover 13, and a downward pressure is applied to the upper conductive roller 7 through the provided slider 11 and the first spring 15, thereby ensuring stable contact between the two conductive rollers 7 and the rods and wires.

[0034] As an optional embodiment, the metal carbon brush 8 located at the top is fixedly connected to the slider 11, and the metal carbon brush 8 located at the bottom is fixedly connected to the bracket 3, and the metal carbon brush 8 includes two carbon brush blocks, and the carbon brush blocks are in contact with the stepped copper shaft 6; A copper braided wire 10 is fixedly connected between two carbon brush blocks located on the same metal carbon brush 8, and a copper braided wire 10 is fixedly connected between the two metal carbon brushes 8; One of the carbon brush blocks is connected to the negative electrode of the pulse power supply 18 through an electric wire; A second spring 16 is fixedly connected between the two carbon brush blocks on the same metal carbon brush 8 .

[0035] In one embodiment of the present invention, referring to Figure 5 The metal carbon brush 8 located at the top is fixed on the slider 11 and moves with the slider 11, and the metal carbon brush 8 located at the bottom is fixed on the bracket 3. In addition, the metal carbon brush 8 is two sliding carbon brush blocks. The two carbon brush blocks ensure the stable contact between the metal carbon brush 8 and the stepped copper shaft 6 through the set second spring 16, thereby realizing the connectivity of the circuit and ensuring the stability of the power supply.

[0036] As an optional implementation, two ceramic tubes 17 are fixedly connected to the bracket 3 , the two conductive rollers 7 are located between the two ceramic tubes 17 , and the rods and wires pass through the ceramic tubes 17 .

[0037] In one embodiment of the present invention, referring to Figure 4Specifically, the bracket 3 is installed on the frame 1 through the bottom plate 9, the ceramic tube 17 and the rod wire are located on the same axis, and the rod wire passes through the ceramic tube 17 at one end and the two conductive rollers 7 in turn and then passes through the ceramic tube 17 at the other end.

[0038] As an optional implementation, two rod and wire guide rollers 19 are fixedly connected to the frame 1, and the rod and wire on the reel 20 are guided and transported to the straightening frame 2 through the two rod and wire guide rollers 19.

[0039] In one embodiment of the present invention, referring to Figure 1 In the initial state, the rod and wire are wound on the reel 20, one end of which passes through two rod and wire guide rollers 19 for guidance, and the tension of the two rod and wire guide rollers 19 is adjusted to adapt to different rods and wires.

[0040] A method for spiral straightening of rods and wires assisted by pulse current, comprising the following steps: One end of the rod and wire is controlled to extend into the straightening frame 2 and be straightened by a plurality of straightening rollers 5, and then the rod and wire is controlled to pass between a pair of conductive rollers 7 and the conductive rollers 7 are made to abut against the rod and wire, so that a plurality of straightening rollers 5, a plurality of pulse power supplies 18, conductive rollers 7 and the rod and wire can form a parallel circuit to adjust the parameters of the pulse power supply 18, and perform pulse current assisted straightening on the rod and wire.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply 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 understood as a limitation on the present invention.

[0042] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A pulse current assisted rod and wire spiral straightening device, characterized in that: include: Rack(1); A pair of conductive rollers (7) are arranged on the frame (1), and the pair of conductive rollers (7) are used to abut against the rods and wires; A rod and wire straightening mechanism, comprising a straightening frame (2), which is arranged on the frame (1), the cross-section of the straightening frame (2) being polygonal, so that the interior of the straightening frame (2) has a plurality of inner side surfaces; a plurality of straightening rollers (5), each of the straightening rollers (5) being used to abut against the rod or wire, and at least one straightening roller (5) being arranged on the inner side surface of each straightening frame (2), so that the plurality of straightening rollers (5) can be distributed on the rod or wire in a spiral shape, and the straightening rollers (5) are rotatably matched with the straightening frame (2); Wherein, by controlling the rod and wire to pass through the inside of the straightening frame (2) along the conveying direction, the plurality of straightening rollers (5) can straighten the rod and wire from a bent state to a straight state; A plurality of straightening roller supports (4), wherein at least one straightening roller support (4) is provided on the inner side surface of each straightening frame (2), and the straightening roller (5) is rotatably connected to the straightening roller support (4); The cross section of the straightening frame (2) is a regular octagon, and the number of the straightening rollers (5) is at least eight; A plurality of pulse power supplies (18) are respectively arranged on the frame (1), and the positive electrodes of the plurality of pulse power supplies (18) are respectively connected to the plurality of straightening rollers (5), and the negative electrodes of the plurality of pulse power supplies (18) are respectively connected to the conductive rollers (7), wherein the plurality of straightening rollers (5), the plurality of pulse power supplies (18), the conductive rollers (7) and the rods and wires can form a parallel circuit for passing a pulse current through the rods and wires.

2. A pulse current assisted rod and wire spiral straightening device according to claim 1, characterized in that: Also includes: A bracket (3) fixedly connected to the frame (1); Two stepped copper shafts (6) are rotatably connected to the upper and lower parts of the bracket (3), respectively, and the two conductive rollers (7) are fixedly connected to one end of the two stepped copper shafts (6); Two pairs of metal carbon brushes (8) are respectively sleeved on the other ends of the two stepped copper shafts (6); the metal carbon brushes (8) are connected to copper braided wires (10); and the metal carbon brushes (8) are connected to the negative electrode of the pulse power supply (18).

3. A pulse current assisted rod and wire spiral straightening device according to claim 2, characterized in that: The bracket (3) is slidably connected to a slider (11); the stepped copper shaft (6) located above is rotatably connected to the slider (11) via a ceramic bearing (12); a top cover (13) is provided at the top of the bracket (3); one end of an optical axis (14) is fixedly connected to the top of the slider (11); the other end of the optical axis (14) passes through the top cover (13) and is slidably matched with the top cover (13); A first spring (15) is sleeved on the optical axis (14), and two ends of the first spring (15) are respectively fixedly connected to the top cover (13) and the sliding block (11); When the rod wire passes through a pair of conductive rollers (7), the conductive roller (7) located above can be pushed to compress the first spring (15).

4. A pulse current assisted rod and wire spiral straightening device according to claim 3, characterized in that: The metal carbon brush (8) located at the top is fixedly connected to the slider (11), and the metal carbon brush (8) located at the bottom is fixedly connected to the bracket (3), and the metal carbon brush (8) includes two carbon brush blocks, and the carbon brush blocks are in contact with the stepped copper shaft (6); The copper braided wire (10) is fixedly connected between two carbon brush blocks located on the same metal carbon brush (8), and the copper braided wire (10) is fixedly connected between the two metal carbon brushes (8); One of the carbon brush blocks is connected to the negative electrode of the pulse power supply (18) via an electric wire; A second spring (16) is fixedly connected between the two carbon brush blocks on the same metal carbon brush (8).

5. The pulse current assisted rod and wire spiral straightening device according to claim 2, characterized in that: Two ceramic tubes (17) are fixedly connected to the bracket (3), the two conductive rollers (7) are located between the two ceramic tubes (17), and the rods and wires pass through the ceramic tubes (17).

6. A pulse current assisted rod and wire spiral straightening device according to claim 2, characterized in that: Two rod and wire guide rollers (19) are fixedly connected to the frame (1), and the rod and wire on the reel (20) are guided and transported into the straightening frame (2) by the two rod and wire guide rollers (19).

7. A pulse current assisted rod and wire spiral straightening method, applicable to a pulse current assisted rod and wire spiral straightening device as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: One end of the rod and wire is controlled to extend into the straightening frame (2) and pass through a plurality of straightening rollers (5) for straightening. Then, the rod and wire is controlled to pass between a pair of conductive rollers (7) and the conductive rollers (7) are made to abut against the rod and wire, so that a plurality of straightening rollers (5), a plurality of pulse power supplies (18), the conductive rollers (7) and the rod and wire can form a parallel circuit. The parameters of the pulse power supply (18) are adjusted to perform pulse current-assisted straightening on the rod and wire.

Images