A multi-functional lead copper bar bending tooling and its usage method

Abstract

The present invention discloses a multifunctional bending tooling for lead copper bars and its usage method, which relates to the technical field of hydrogenerator manufacturing, and includes: a top support device, a bottom support device, a profiling wheel, a bending die wheel, a top axial adjustment device, and a bottom radial adjustment device. The top support device is fixedly connected to the top axial adjustment device above, and two profiling wheels are installed below. A gap is left between the top support device and the bottom support device. The bottom support device is installed on the bottom radial adjustment device, and a profiling wheel is installed above. Compared with the prior art, by using this bending tooling, it is possible to complete the one-time die pressing and assembly (trial assembly) of copper rings of different specifications and sizes, and at the same time meet the requirements of the drawings. And it realizes the purpose of relying on this tooling to replace the finished product of purchasing copper ring leads in the technical field of hydrogenerators. It has the advantages of convenient assembly, simple use, easy adjustment, wide adaptability, and improving the bending and profiling quality of copper ring leads.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing of hydro-generators, and particularly to a multi-functional lead copper bar bending tooling and its using method. Background Art

[0002] A stator mechanism composed of a stator frame, a stator core, stator lead wires, etc. is an important part of a hydro-generator. Its main function is to convert the kinetic energy of a water turbine into electrical energy. Among them, the copper ring lead wire in the stator assembly is equivalent to the "blood vessel" of the generator, responsible for transporting the generated electrical energy to the power grid. The quality of the lead wire directly affects the power generation efficiency and power loss rate. Therefore, the shape and installation position of the lead wire play an important role in the generator set.

[0003] To ensure that the stator copper ring lead wire can meet the requirements of the design drawing and ensure the installation quality and construction period of the stator assembly at the power station site, the stator core needs to be ironed and wound in the factory. Since the installation of the copper ring lead wire needs to be carried out after the winding process, and in the past, the copper ring lead wire needed to be manufactured and pressed by an external cooperation unit, which required a large amount of cost and sometimes was delayed due to various factors, thus affecting the construction period of the completion of the stator assembly. Therefore, it is of great significance to manufacture the lead wire pressing die tooling by oneself and independently complete the production of the lead wire. Summary of the Invention

[0004] The present invention is to overcome the deficiencies in the prior art, and provides a multi-functional lead copper bar bending tooling and its using method. The purpose is to provide a multi-functional lead copper bar bending tooling for vertical mixed-flow units with a short construction period, low processing cost, convenient use, and wide applicability to products.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: including: a top support device, a bottom support device, a profiling wheel, a bending die wheel, a top axial adjustment device, and a bottom radial adjustment device. The top of the top support device is fixedly connected to the top axial adjustment device, and two profiling wheels are installed below. The top support device and the bottom support device are used in cooperation with each other. The bottom support device is installed on the bottom radial adjustment device, and the bending die wheel is installed on the bottom support device.

[0006] Further, the top support device includes: a support pressure head, a support pressure head cover plate, and a support connection block. A number of through holes Ⅰ are provided in the upper part of the support pressure head. The top support device is fixedly connected to the top axial adjustment device by a number of fasteners through the through holes Ⅰ. The support connection block is welded in the middle of the support pressure head. The support pressure head cover plate is fixedly connected to the support connection block by a number of fasteners. Installation holes Ⅰ are provided on both sides of the bottom of the support pressure head and the support pressure head cover plate.

[0007] Further, through holes II that cooperate with the bottom radial adjustment device are provided at the four corners of the bottom support device, and square keys for positioning are provided. The bottom support device is fixedly connected to the bottom radial adjustment device through the through holes II by means of a number of fasteners, and an installation hole II is provided in the middle of the bottom radial adjustment device.

[0008] Further, the profiled wheel is a hollow cylinder with a groove provided in the middle of the outer surface. The profiled wheel is installed between the support punch and the support punch cover plate by means of the profiled wheel central shaft through the installation holes I provided on both sides of the bottom of the support punch cover plate.

[0009] Further, the bending die wheel is a cylinder with a groove provided in the middle of the outer surface. The bending die wheel is installed on the bottom radial adjustment device by means of the bending die wheel central shaft through the installation hole II provided in the middle of the bottom radial adjustment device, and is fixedly connected to the bottom radial adjustment device by means of a number of fasteners at the same time.

[0010] Further, the top axial adjustment device includes: a hydraulic cylinder and a punch connecting device. The punch connecting device is fixedly connected to the top support device, and the other end is connected to the hydraulic cylinder.

[0011] Further, the bottom radial adjustment device includes: a rotary table and a radial slide rail. The bottom support device is installed on the radial slide rail by bolts, and the radial slide rail is installed on the rotary table.

[0012] A usage method of a multi-functional lead copper bar bending tooling includes the following steps:

[0013] S1. After assembling the device, place the material in the side grooves of the bending die wheel and the two profiled wheels;

[0014] S2. According to the requirements of the processed material, adjust the position of the bottom support device through the radial slide rail to meet the processing requirements;

[0015] S3. Start the hydraulic cylinder to make the top support device move towards the bottom support device to clamp the material;

[0016] S4. According to the processing requirements of the bending angle, start the hydraulic cylinder to further drive the top support device to move towards the bottom support device to bend the material to the angle that meets the processing requirements;

[0017] S5. Start the rotary table to drive the bending die wheel installed on the bottom support device to rotate and push and bend the remaining material.

[0018] The advantages of the present invention are as follows:

[0019] During the production process of the copper ring leads for the stator assembly of a Francis hydrogenerator, by using this bending tooling, the primary die forming and assembly (trial assembly) of copper rings with different specifications and dimensions can be completed, and at the same time, the requirements of the drawings can be met. Moreover, in the field of hydrogenerator technology, the purpose of relying on this tooling to replace the procurement of finished copper ring leads is achieved. It has the advantages of convenient assembly, simple use, easy adjustment, wide adaptability, and improved quality of bending and pressing of copper ring leads. Brief Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the top support device and the bottom support device of the present invention;

[0023] Figure 3 It is a schematic side view structural diagram of the top support device of the present invention.

[0024] Wherein:

[0025] 1. Top support device; 2. Bottom support device; 3. Pressing wheel;

[0026] 4. Bending die wheel; 5. Top axial adjustment device; 6. Bottom radial adjustment device;

[0027] 11. Support pressing head; 12. Support pressing head cover plate; 13. Support connection block;

[0028] 14. Through hole Ⅰ; 15. Mounting hole Ⅰ; 21. Through hole Ⅱ;

[0029] 22. Mounting hole Ⅱ; 31. Pressing wheel central axis; 41. Bending die wheel central axis;

[0030] 51. Hydraulic cylinder; 52. Pressing head connection device; 61. Rotary worktable;

[0031] 62. Radial slide rail; Detailed Embodiments

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1:

[0035] Figure 1 is a structural schematic diagram of the present invention. Figure 2 is a structural schematic diagram of the top support device and the bottom support device of the present invention. Figure 3 is a side view structural schematic diagram of the top support device of the present invention. As Figures 1 - 3 shown, a multifunctional lead copper bar bending tooling includes: a top support device 1, a bottom support device 2, a profiling wheel 3, a bending die wheel 4, a top axial adjustment device 5 and a bottom radial adjustment device 6. The top of the top support device 1 is fixedly connected to the top axial adjustment device 5, and two profiling wheels 3 are installed below. The top support device 1 and the bottom support device 2 are used in cooperation with each other. The bottom support device 2 is installed on the bottom radial adjustment device 6, and the bending die wheel 4 is installed on the bottom support device 2. The top support device 1 includes: a support pressure head 11, a support pressure head cover plate 12 and a support connection block 13. A number of through holes Ⅰ14 are provided in the upper part of the support pressure head 11. The top support device 1 is fixedly connected to the top axial adjustment device 5 through a number of fasteners passing through the through holes Ⅰ14. The support connection block 13 is welded in the middle of the support pressure head 11. The support pressure head cover plate 12 is fixedly connected to the support connection block 13 through a number of fasteners. Installation holes Ⅰ15 are provided on both sides of the bottom of the support pressure head 11 and the support pressure head cover plate 12.

[0036] With such a setting, through the support punch 11 in the top support device 1, the top support device 1 can be connected to the top axial adjustment device 5. Through the support punch cover plate 12 and the support connection block 13, they can be connected into a stable whole, and the profiling wheel 3 is fixed therein. The structures of all parts are simple, facilitating processing and manufacturing, and the assembly is simple, and it has high strength, which can meet the processing of large-sized materials.

[0037] Embodiment 2:

[0038] Figure 1 It is a structural schematic diagram of the present invention. Figure 2 It is a structural schematic diagram of the top support device and the bottom support device of the present invention. Figure 3 It is a side view structural schematic diagram of the top support device of the present invention. As Figures 1 - 3 shown, a multifunctional lead copper bar bending tooling, the profiling wheel 3 is a hollow cylinder with a groove opened in the middle of the outer surface. The profiling wheel 3 is installed between the support punch 11 and the support punch cover plate 12 by using the profiling wheel central shaft 31 through the installation holes Ⅰ15 opened on both sides of the bottom of the support punch cover plate 12. The bending die wheel 4 is a cylinder with a groove opened in the middle of the outer surface. The bending die wheel 4 is installed on the bottom radial adjustment device 6 by using the bending die wheel central shaft 41 through the installation hole Ⅱ22 opened in the middle of the bottom radial adjustment device 6, and is fixedly connected to the bottom radial adjustment device 6 through a plurality of fasteners at the same time. The top axial adjustment device 5 includes: a hydraulic cylinder 51 and a punch connection device 52. The punch connection device 52 is fixedly connected to the top support device 1, and the other end is connected to the hydraulic cylinder 51. The bottom radial adjustment device 6 includes: a rotary table 61 and a radial slide rail 62. The bottom support device 2 is installed on the radial slide rail 62 by bolts, and the radial slide rail 62 is installed on the rotary table 61.

[0039] With such a setting, through the grooves opened in the middle of the outer surfaces of the profiling wheel 3 and the bending die wheel 4, the processing material can be fixed, the bending path and the bend can be stabilized. By adjusting the position of the top support device 1 through the hydraulic cylinder 51 and adjusting the position of the bottom support device 2 through the radial slide rail 62, materials of different model sizes can be processed. By rotating the rotary table 61, the bending die wheel 4 can be rotated to provide bending power. The profiling wheel 3 can stabilize the material on both sides above the bending die wheel 4, so that the processed size can be more reasonable.

[0040] Working principle: After all components are installed and before starting the equipment, adjust the top axial adjustment device 5 and the bottom radial adjustment device 6 according to the different sizes of the materials to be processed. Place the material between the top support device 1 and the bottom support device 2. At the same time, the material should be placed in the groove on the outer sidewall of the profiling wheel 3 and the bending die wheel 4. After the material is placed, start the device. Adjust the position of the top support device 1 through the hydraulic cylinder 51 to apply a downward force, thereby bending the material. The rotary worktable 61 drives the bending die wheel 4 to rotate to continuously bend the subsequent materials. At the same time, the profiling wheel 3 is also driven to rotate, ensuring stability while bending the material. Detection instruments such as height gauges and micrometers can also be placed on the detection bases of the top support device 1 and the bottom support device 2 to realize the detection of various relevant dimensions of the copper ring profiling and bending.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-functional bending tooling for lead copper bars, characterized in that: it includes: a top support device (1), a bottom support device (2), a profiling wheel (3), a bending die wheel (4), a top axial adjustment device (5) and a bottom radial adjustment device (6). The top of the top support device (1) is fixedly connected to the top axial adjustment device (5), and two profiling wheels (3) are installed below. The top support device (1) and the bottom support device (2) are used in cooperation with each other. The bottom support device (2) is installed on the bottom radial adjustment device (6), and the bending die wheel (4) is installed on the bottom support device (2); The said top axial adjustment device (5) includes: a hydraulic cylinder (51) and a pressure head connection device (52). The pressure head connection device (52) is fixedly connected to the top support device (1), and the other end is connected to the hydraulic cylinder (51); The said bottom radial adjustment device (6) includes: a rotary table (61) and a radial slide rail (62). The bottom support device (2) is installed on the radial slide rail (62) through bolts, and the radial slide rail (62) is installed on the rotary table (61).

2. The multi-functional bending tooling for lead copper bars according to claim 1, characterized in that: The said top support device (1) includes: a support pressure head (11), a support pressure head cover plate (12) and a support connection block (13). A number of through holes Ⅰ (14) are opened in the upper part of the support pressure head (11). The top support device (1) is fixedly connected to the top axial adjustment device (5) through the through holes Ⅰ (14) by a number of fasteners. The support connection block (13) is welded in the middle of the support pressure head (11). The support pressure head cover plate (12) is fixedly connected to the support connection block (13) by a number of fasteners. Installation holes Ⅰ (15) are opened on both sides of the bottom of the support pressure head (11) and the support pressure head cover plate (12).

3. The multi-functional bending tooling for lead copper bars according to claim 1, characterized in that: Through holes Ⅱ (21) matching with the bottom radial adjustment device (6) are opened at the four corners of the said bottom support device (2), and positioning square keys are provided. The bottom support device (2) is fixedly connected to the bottom radial adjustment device (6) through the through holes Ⅱ (21) by a number of fasteners. An installation hole Ⅱ (22) is opened in the middle of the bottom radial adjustment device (6).

4. The multi-functional bending tooling for lead copper bars according to claim 2, characterized in that: The said profiling wheel (3) is a hollow cylinder with a groove opened in the middle of the outer surface. The profiling wheel (3) is installed between the support pressure head (11) and the support pressure head cover plate (12) through the installation holes Ⅰ (15) opened on both sides of the bottom of the support pressure head cover plate (12) by using a profiling wheel central shaft (31).

5. The multi-functional bending tooling for lead copper bars according to claim 1, characterized in that: The bending die wheel (4) is a cylinder with a groove formed in the middle of its outer surface. The bending die wheel (4) is mounted on the bottom radial adjustment device (6) by means of a bending die wheel central shaft (41) through a mounting hole II (22) formed in the middle of the bottom radial adjustment device (6), and is fixedly connected to the bottom radial adjustment device (6) by a number of fasteners.

6. A method for using a multi-functional lead copper bar bending tooling according to claim 1, characterized in that it comprises the following steps: S1. After assembling the device, place the material in the side grooves of the bending die wheel (4) and the two profiling wheels (3); S2. According to the requirements of the processed material, adjust the position of the bottom support device (2) through the radial slide rail (62) to meet the processing requirements; S3. Start the hydraulic cylinder (51) so that the top support device (1) moves towards the bottom support device (2) to clamp the material; S4. According to the processing requirements of the bending angle, start the hydraulic cylinder (51) to further drive the top support device (1) to move towards the bottom support device (2) to bend the material to an angle that meets the processing requirements; S5. Start the rotary worktable (61) to drive the bending die wheel (4) mounted on the bottom support device (2) to rotate and push and bend the remaining material.

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