Equipment for manufacturing convex ribs on inner wall of cylindrical part

Abstract

The present disclosure provides an apparatus for manufacturing a rib on an inner wall of a barrel, the apparatus comprising: a rotating member configured to be rotatable about a rotation axis; the clamping mechanism is configured to rotate along with the rotating component and is used for clamping the cylindrical part so that the longitudinal axis of the cylindrical part is collinear with the rotating axis; and the machining device is used for implementing electric arc material increase on the inner wall of the cylindrical part and rolling the increased material to obtain the convex ribs, and the machining device is configured to move in the axial direction of the clamped cylindrical part.

Description

Technical Field

[0001] The present disclosure relates to the field of mechanical component manufacturing, and in particular to a device for manufacturing convex ribs on the inner wall of a cylindrical component. Background Art

[0002] Components with ribs on the inner wall of cylindrical parts play a vital role in modern industry, especially in the manufacture of main structural parts of spacecraft. Due to their unique structural design, these components can provide additional strength and rigidity, thus showing excellent performance when subjected to high pressure, high temperature and complex mechanical loads. In the aerospace field, these components are often used in key positions such as the shell of rocket engines, the support structure of satellites, and the connection parts of space stations. Their performance is directly related to the safety and reliability of spacecraft.

[0003] Additive manufacturing technology, especially arc additive manufacturing, has become an effective means to manufacture such complex structural components. This technology can accurately control the geometry and internal structure of the components by stacking materials layer by layer, including the formation of ribs on the inner wall of the cylindrical part. Arc additive manufacturing uses an arc as a heat source to melt the metal wire and deposit it layer by layer on the substrate to form the desired three-dimensional structure. This method not only achieves efficient use of materials, but also reduces waste in the manufacturing process, while providing the ability to design and manufacture complex geometries. In the arc additive manufacturing process, the shape and size of the molten pool can be controlled by adjusting the arc parameters, wire feeding speed and deposition path, thereby precisely controlling the formation of ribs. In addition, through subsequent heat treatment and machining, the microstructure and mechanical properties of the components can be further optimized to meet specific application requirements.

[0004] Although arc additive manufacturing technology has made significant progress in the manufacture of cylindrical parts with complex inner wall structures, there are still some limitations. One of the main problems is that the current additive manufacturing technology is mainly suitable for the manufacture of flat parts, and it is still challenging to directly form ribs on the inner wall of the cylindrical part. In addition, the rapid melting and solidification during the additive manufacturing process may lead to the formation of coarse dendrites, which may weaken the mechanical properties of the parts, especially when subjected to tensile or impact loads. In addition, rapid solidification may also introduce solidification structure defects such as pores and cracks, which will affect the overall strength and reliability of the components. In addition, the special organization inside the additive manufacturing material makes it have obvious anisotropy. The large residual stress in the additive manufacturing component leads to deformation and cracking of the material, and cracks and holes are easily generated inside the material. Therefore, the material after arc additive manufacturing usually needs to be plastically deformed to refine the grains, optimize the microstructure, reduce defects, and improve the uniformity and mechanical properties of the material. Taking rolling as a precision forming technology to further refine metal grains, introduce residual compressive stress layers, reduce surface roughness, and improve the wear resistance, corrosion resistance, and compatibility of the workpiece surface as an example, for cylindrical parts, the difficulty lies in: precise pressure needs to be applied during the rolling process to ensure the uniformity and consistency of the ribs while avoiding excessive deformation or material damage; the inner wall rolling of cylindrical parts requires special tooling and equipment to ensure that the rolling tool can reach the inner wall and roll effectively; in order to ensure the uniformity and consistency of the ribs, the rolling path needs to be precisely planned to avoid uneven deformation of the material. The existence of these difficulties makes rolling the inner wall of cylindrical parts a technical challenge. Moreover, when additive manufacturing is performed on the inner wall of the cylindrical part, the control of the heat-affected zone becomes more complicated, which may lead to uneven distribution of material properties; when forming ribs on the inner wall, precision control and optimization of surface roughness become more difficult, especially in the manufacture of large-size parts. In particular, for large-sized cylindrical parts, there are also problems of global temperature control and precise control of the moving speed and spatial position of each component. Specifically, large-sized cylindrical parts will definitely face the problem of large temperature difference during the forming process, which will lead to large thermal stress, poor interlayer bonding and poor uniformity. Temperature control is crucial to ensure the quality and performance of the ribs. The uneven distribution of temperature gradients may lead to uneven material properties, affecting the reliability and durability of the parts. In order to form ribs with specific helical angles, it is necessary to precisely control the moving speed and spatial position of each component, which is crucial to ensure the geometric accuracy and performance of the ribs. Any deviation may lead to deviations in the shape of the ribs, affecting their structural strength and function. Therefore, although arc additive manufacturing technology has potential in manufacturing cylindrical parts with ribs, current technologies and methods still need further improvement and optimization to overcome the above challenges and achieve the goal of efficiently and accurately forming ribs on the inner wall of cylindrical parts. Summary of the invention

[0005] In order to solve the above technical problems, the embodiments of the present disclosure hope to provide a device for manufacturing ribs on the inner wall of a cylindrical member, which can manufacture high-performance ribs on the inner wall of a cylindrical member in an efficient, accurate and reliable manner, thereby meeting the needs of modern industry for high-performance cylindrical members.

[0006] The technical solution of the present disclosure is achieved as follows: The present disclosure provides a device for manufacturing ribs on the inner wall of a cylindrical member, the device comprising: a rotating member configured to be rotatable about a rotation axis; a clamping mechanism configured to rotate with the rotating member and for clamping the cylindrical member so that the longitudinal axis of the cylindrical member is colinear with the rotation axis; A processing device is used to implement arc material addition on the inner wall of the cylindrical member and roll the added material to obtain the convex ribs. The processing device is configured to be movable in the axial direction of the clamped cylindrical member.

[0007] The cylindrical part is rotated by the rotating member, which avoids the complex movement of the processing device along the circumference of the cylindrical part, reduces the mechanical load, and improves the processing flexibility and efficiency. The clamping mechanism firmly clamps the cylindrical part, without the need for additional support structures, and directly manufactures the ribs on the inner wall, which improves efficiency and reduces material waste and post-processing work. The processing device's ability to move in the axial direction of the cylindrical part, in conjunction with the arc additive unit and the rolling unit, ensures the uniformity of the ribs and improves processing accuracy and mechanical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a three-dimensional schematic diagram of a cylindrical member with convex ribs on the inner wall according to an embodiment of the present disclosure; Figure 2 is a three-dimensional schematic diagram of a cylindrical member with convex ribs on the inner wall according to another embodiment of the present disclosure; Figure 3 is a three-dimensional schematic diagram of an apparatus for manufacturing ribs on the inner wall of a cylindrical member according to an embodiment of the present disclosure; Figure 4 It is a three-dimensional schematic diagram of the combination of a radial clamping unit and a rotating member of a clamping mechanism of an apparatus for manufacturing ribs on the inner wall of a cylindrical member according to an embodiment of the present disclosure; Figure 5 is an enlarged three-dimensional schematic diagram of a radial clamping unit of a clamping mechanism of an apparatus for manufacturing ribs on the inner wall of a cylindrical member according to an embodiment of the present disclosure; Figure 6 It is a three-dimensional schematic diagram of a lifting mechanism of an apparatus for manufacturing ribs on the inner wall of a cylindrical member according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0009] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure.

[0010] In modern industry, especially in the manufacturing of main structural parts of spacecraft, components with ribs on the inner wall of cylindrical parts are crucial because they can provide additional strength and rigidity. These components show excellent performance when subjected to high pressure, high temperature and complex mechanical loads, and are widely used in key locations such as rocket engine casings, satellite support structures and space station connection parts. However, although additive manufacturing technology, especially arc additive manufacturing technology, provides an effective means to manufacture such complex structural parts, it still faces some challenges in manufacturing cylindrical parts with complex inner wall structures.

[0011] Arc additive manufacturing technology can precisely control the geometry and internal structure of parts, including the formation of ribs on the inner wall of cylindrical parts, by stacking materials layer by layer. This process uses an electric arc as a heat source to melt the metal wire and deposit it layer by layer on the substrate to form the desired three-dimensional structure. Although this method can achieve efficient use of materials and reduce waste in the manufacturing process, some technical difficulties are encountered when forming ribs directly on the inner wall of the cylindrical part. The main problems include the complexity of heat-affected zone control, the need for additional support structures, the difficulty of precision control and surface roughness optimization, and the difficulty in obtaining high-quality ribs, especially in the manufacture of large-scale parts.

[0012] These problems indicate that although arc additive manufacturing technology has the potential to manufacture cylindrical parts with ribs in theory, in actual operation, the current technology and methods still need further improvement and optimization. In order to overcome these challenges and achieve the goal of efficiently and accurately forming high-performance ribs on the inner wall of the cylindrical part, see Figures 1 to 3 The present disclosure provides an apparatus 1 for manufacturing a rib R on an inner wall IW of a cylindrical member B, wherein Figure 1 and Figure 2 FIG. 4 shows a cylindrical member B having ribs R on the inner wall IW. Figure 3 The device 1 is shown in FIG. Figure 1 In the embodiment, the ribs R extend along the circumferential direction and axial direction of the cylindrical member B. Figure 2 In the embodiment, the rib R extends along the circumferential direction of the cylindrical member B and also extends along the axial direction of the cylindrical member B, as shown in Figure 3 As shown in FIG. 1 , the device 1 may include: The rotating member 10 is configured to rotate around Figure 3The rotating member 10 is rotated about the rotating axis RA shown by the dotted line. In addition, the number of the rotating member 10 can be two, and they are respectively arranged at the two axial ends of the cylindrical member B. Here, Figure 3 Only one rotating member 10 is shown; The clamping mechanism 20 is configured to rotate with the rotating member 10 and is used to clamp the cylindrical member B so that Figure 3 The longitudinal axis LA of the cylindrical member B shown by the dotted line is also colinear with the rotation axis RA of the rotating member 10. When the number of the rotating members 10 is two, the number of the clamping mechanism 20 can also be two accordingly, such as in Figure 3 As shown in; The processing device 30 is used to implement arc material addition on the inner wall IW of the cylindrical member B and roll the added material to obtain the Figure 1 and Figure 2 The rib R shown in FIG. 1 is a rib R, and the processing device 30 is configured to be able to move in the axial direction of the clamped cylindrical member B, more specifically, as shown in FIG. Figure 3 As shown in the figure, the processing device 30 may include an arc additive unit 31, a rolling unit 32 and a bracket 33, wherein the arc additive unit 31 may include a robot arm and a welding rod arranged at the end of the robot arm, the rolling unit 32 may include a roller and a pressing mechanism for pressing the roller against the added material, such as a hydraulic type pressing mechanism to provide a greater pressure, and the bracket 33 is used to guide the rolling unit 32 to move in the axial direction of the clamped cylindrical member B. That is to say, the movement of the above-mentioned processing device 30 specifically refers to the movement of the end of the robot arm and the movement of the rolling unit 32, and the bracket 33 can remain fixed.

[0013] For manufacturing Figure 1 For the rib R shown in FIG. 1 , the processing device 30 can be kept stationary and the rotating member 10 can be rotated to obtain the rib R extending along the circumferential direction of the cylindrical member B. Then, the rotating member 10 can be kept stationary and the processing device 30 can be moved to obtain the rib R extending along the axial direction of the cylindrical member B. Figure 2 As for the rib R shown in FIG. 1 , the rib R can be extended in the circumferential direction of the cylindrical member B and in the axial direction of the cylindrical member B by rotating the rotating member 10 and moving the processing device 30 .

[0014] Since the cylindrical member B can be rotated by the rotating member 10, the processing device 30 does not need to perform complex and difficult movements along the circumference of the cylindrical member B. This design significantly simplifies the processing process because the manufacture of the rib R can be achieved by rotating the cylindrical member B, rather than requiring the processing device 30 to perform complex movements. Such a design reduces the mechanical load on the robot arm and the rolling unit, reduces the risk of equipment failure, and improves the flexibility and efficiency of the processing. Since the cylindrical member B is stably clamped by the clamping mechanism 20, the rib R is allowed to be directly manufactured on the inner wall of the cylindrical member without the need for additional support structures. The design of the clamping mechanism 20 ensures the stability of the cylindrical member B during the processing, and its position and posture can be maintained unchanged even when subjected to a large rolling force applied by the processing device 30. This direct manufacturing method not only improves the efficiency of the manufacturing process, but also reduces potential quality problems caused by the support structure, such as unnecessary waste of materials and additional work to remove the support structure after processing. The processing device 30 is able to move in the axial direction of the clamped cylindrical part B, which means that the manufacture of the convex rib R can be precisely controlled along the entire length of the cylindrical part B. The coordinated work of the arc additive unit 31 and the rolling unit 32 ensures the uniformity and consistency of the convex rib R, thereby improving the processing accuracy of the final product. Specifically, the arc additive unit 31 includes a robotic arm and a welding rod arranged at the end of the robotic arm, which is used to implement arc additive on the inner wall IW of the cylindrical member B. This technology is efficient because it can accurately stack materials layer by layer to form the required ribs R, while achieving efficient use of materials. The rolling unit 32 includes a roller and a pressing mechanism for pressing the roller against the added material, such as a hydraulic type pressing mechanism to provide a greater pressure. The rolling technology can not only refine the metal grains and introduce a residual compressive stress layer, but also reduce the surface roughness, improve the wear resistance, corrosion resistance and fit of the workpiece surface, and provide high-performance characteristics of the ribs. The bracket 33 is used to guide the rolling unit 32 to move in the axial direction of the clamped cylindrical member B. The bracket 33 remains fixed, providing accuracy and reliability during the processing and ensuring the uniformity and consistency of the ribs R. Due to the rotation of the cylindrical part B and the axial movement of the processing device 30, the present disclosure allows a continuous and automated processing process, thereby significantly improving production efficiency. In addition, since the need for support structures is reduced, the cleaning and post-processing work after processing is also simplified, further reducing production costs. The stability of the processing process is ensured by coordinating the arc additive and rolling operations through an integrated control system. This collaborative operation mechanism ensures the precise coordination of the arc additive and rolling steps, improving the processing quality and efficiency. The complementary advantages of these technologies, which combine the rotation ability of the rotating component 10, the stability of the clamping mechanism 20, the efficiency of the arc additive unit 31, the high performance characteristics of the rolling unit 32, and the accuracy and reliability of the bracket 33, jointly achieve the goal of high-performance integral forming and manufacturing of thin-walled cylindrical parts with internal ribs.In summary, the present disclosure not only solves the problems existing in the prior art, but also provides an efficient, precise and reliable method for manufacturing high-performance ribs on the inner wall of a cylindrical member, thereby meeting the demand of modern industry for high-performance cylindrical members.

[0015] In particular, for the problem that the rolling operation of the cylindrical member B, especially the large size, is difficult to complete, in the embodiment of the present disclosure, in order to ensure the uniformity of the rib R and avoid excessive deformation or material damage, a precise pressure control mechanism is adopted. Specifically, the rolling unit 32 includes a roller and a pressing mechanism for pressing the roller against the added material, such as a hydraulic type pressing mechanism to provide a large pressure. Through the precise control of the hydraulic system, the pressure of the roller on the material can be adjusted to ensure the uniform distribution of the pressure during the rolling process, thereby achieving the uniformity of the rib R. This pressure control mechanism allows the pressure to be adjusted at different processing stages to adapt to different material properties and processing requirements. In order to solve the special requirements of the rolling of the inner wall IW of the cylindrical member B, the rolling unit 32 in the technical solution is configured to be able to move in the axial direction of the clamped cylindrical member B. In addition, the design of the rotating member 10 enables the cylindrical member B to rotate around the rotation axis RA, so that the rolling unit 32 does not need to perform complex circumferential movement, but realizes the manufacture of the rib R by the rotation of the cylindrical member B. This design significantly simplifies the processing process and reduces the requirements for the complexity of tooling and equipment. In the process of ensuring the uniformity and consistency of the rib R, accurate planning of the rolling path is crucial. The processing device 30 in the present technical solution includes a rolling unit 32 and a bracket 33, wherein the bracket 33 is used to guide the rolling unit 32 to move in the axial direction of the clamped cylindrical member B. Through the guidance of the rolling unit 32 by the bracket 33, the rolling path of the rolling unit 32 relative to the rotating cylindrical member B can be made more accurate, ensuring that the rolling unit 32 moves evenly along the axial direction of the cylindrical member B to avoid uneven deformation of the material. This precise path planning and control ensures the precise control of the moving speed and spatial position of each component, making the manufacturing process of the rib R more accurate and efficient, ensuring that the rib with a specific helix angle can be formed as required. Since the manufacture of the rib R can be achieved by the rotation of the cylindrical member B, rather than requiring the rolling unit 32 to perform complex movements, this design reduces the mechanical load of the rolling unit 32, reduces the risk of equipment failure, and improves the flexibility and efficiency of processing. In addition, since the cylindrical member B is stably clamped by the clamping mechanism 20 without slipping, the rib R can be directly manufactured on the inner wall IW of the cylindrical member B without the need for an additional support structure, which further improves the efficiency of the manufacturing process and reduces potential quality problems caused by the support structure. In summary, this design achieves precise control of the moving speed and position of each component during the forming process of the rib R by precisely controlling the rotation of the cylindrical member B and the axial movement of the rolling unit 32, thereby ensuring the geometric accuracy and performance of the rib R.

[0016] In a specific embodiment of the present disclosure, as in Figure 3 As shown in FIG. 1 , the rotating member 10 may be a gear ring that rotates around its own central axis through gear transmission.

[0017] The rotating member 10 adopts a gear ring design, which can realize its rotation around its own central axis through a standard gear transmission system. This design makes the rotation of the cylindrical member B simple and direct, because the gear transmission system is a mature and widely used technology, easy to implement, and can be integrated into various mechanical equipment. The rotation of the gear ring can be driven by different power sources such as motors, hydraulic or pneumatic systems, providing flexibility and adaptability. The control of the rotation of the gear ring can be achieved by adjusting the relevant parameters of the gear transmission system, such as adjusting the speed of the motor or using a frequency converter to accurately control the speed of the gear ring. This control method can not only ensure that the cylindrical member B rotates at a constant speed, but also adjust the speed as needed during the manufacturing process of the rib R to adapt to different processing conditions and material properties. In addition, by accurately controlling the speed of the gear ring, the arc additive and rolling processes can be optimized, and the manufacturing quality of the rib R can be improved. Figure 3 As shown, the clamping mechanism 20 is fixed to the end face of the gear ring, so when the gear ring rotates, the clamping mechanism 20 can rotate synchronously. This design simplifies the structure of the equipment because no additional transmission mechanism is required to synchronize the rotation of the clamping mechanism 20. At the same time, this also ensures the stability and consistency of the cylindrical member B during processing because the clamping mechanism 20 is always aligned with the rotation axis of the cylindrical member B. The synchronous rotation of the clamping mechanism 20 also helps to reduce vibration and stress caused by asynchronous rotation, thereby improving processing accuracy and equipment life.

[0018] In a specific embodiment of the present disclosure, see Figure 4 Combined with Figure 3 The clamping mechanism 20 may include a radial clamping unit 21, which is used to clamp the cylindrical member B in a radial direction of the cylindrical member B.

[0019] Since the outer peripheral surface area of ​​the cylindrical member B is large, sufficient contact area is provided for radial clamping, making the clamping operation easy to implement. This design allows the clamping mechanism 20 to contact the outer peripheral surface of the cylindrical member B through the radial clamping unit 21, thereby providing a stable and easily adjustable clamping solution. In addition, the large contact area helps to disperse the clamping force and reduce the risk of damage to the surface of the cylindrical member B, such as when multiple radial clamping units 21 are evenly distributed in the circumference of the cylindrical member B. The design of the clamping mechanism 20 ensures that the cylindrical member B can remain stationary when subjected to forces in all directions. The radial clamping unit 21 applies a uniform and stable clamping force, so that the cylindrical member B will not be displaced or rotated during the processing. This stable clamping ability is essential to ensure processing accuracy, especially in the arc additive and rolling process of the rib R, where a large force needs to be applied to ensure uniform deposition and compaction of the material. The stability of the clamping mechanism 20 ensures that even under the action of these forces, the cylindrical member B can maintain its correct position and posture, thereby ensuring the processing quality. Since the cylindrical part B is firmly clamped during the processing, the processing device 30 can perform arc material addition and rolling on the convex rib R under precisely controlled conditions. This stable clamping method reduces the processing errors caused by vibration or displacement of the cylindrical part B, thereby improving the processing accuracy and surface quality, which is particularly important for manufacturing key components such as spacecraft main structural parts with precise size and surface requirements.

[0020] In a specific embodiment of the present disclosure, see Figure 5 Combined with Figure 4 , the radial clamping unit 21 may include: A base 211, which is fixed to the rotating member 10 and is formed with a first matching portion 211M; The displacement member 212 is formed with a plurality of second matching portions 212M, each of which is configured to be able to cooperate with the first matching portion 211M to fix the displacement member 212 to the base 211, and the displacement member 212 is formed with screw holes not shown in the drawings; Bolt 213, bolt 213 matches with the screw hole, The cylindrical member B is clamped by the bolt 213 through the cooperation of the different second matching parts 212M with the first matching parts 211M and the translation of the bolt 213 in the screw hole.

[0021] The base 211 is fixed to the rotating member 10 and is formed with a first matching portion 211M. A plurality of second matching portions 212M are formed on the displacement member 212, each of which is configured to be able to match with the first matching portion 211M, thereby fixing the displacement member 212 to the base 211. This design allows the radial clamping unit 21 to adapt to cylindrical members B of different diameters by changing the position of the displacement member 212, ensuring wide applicability and flexibility. The design of the displacement member 212 allows a large position change to be achieved through step-by-step displacement, while the continuous displacement of the bolt 213 can achieve a small position adjustment. This design enables the clamping mechanism 20 to clamp cylindrical members B of any radial size more quickly. Through the cooperation of different second matching portions 212M with the first matching portion 211M, and the translation of the bolt 213 in the screw hole, the clamping force and position can be accurately adjusted to achieve fast and stable clamping. This fast-response clamping mechanism significantly improves production efficiency, especially in scenarios where different sizes of cylindrical parts B need to be frequently replaced.

[0022] As in Figure 5 As shown in FIG. 1 , the first matching portion 211M may be a through hole, and the second matching portion 212M may also be a through hole. In this case, for example, the displacement member 212 may be fixed to the base 211 by means of a shaft passing through the through hole. Figure 5 As shown in FIG. 1 , the bolt 213 can also clamp the cylindrical member B through a plate-like member, and a protrusion for contacting the cylindrical member B can be formed on the plate-like member. Figure 5 As shown in FIG. 2 , the radial clamping unit 21 can be fixed to the gear ring through the through hole 211H and the corresponding bolts and the screw holes formed on the end surface of the gear ring.

[0023] In a specific embodiment of the present disclosure, the clamping mechanism 20 may further include an axial clamping unit not shown in the drawings, and the axial clamping unit is used to clamp the cylindrical member B in the axial direction of the cylindrical member B.

[0024] In the process of manufacturing the rib R, especially in the process of arc material addition and rolling, the cylindrical part B may be subjected to a large axial force. It may be difficult to ensure that the cylindrical part B does not deviate axially by relying solely on the radial clamping unit 21, which will affect the processing accuracy and product quality. In order to solve this problem, the clamping mechanism 20 disclosed in the present invention also includes an axial clamping unit, which is used to clamp the cylindrical part B in the axial direction. The design of the axial clamping unit is easy to operate and can effectively prevent the cylindrical part B from deviating when subjected to an axial force, thereby ensuring the stability of the processing process and the processing quality of the product. The clamping mechanism 20 combines the radial clamping unit 21 and the axial clamping unit to ensure that the cylindrical part B can remain stable and not deviate under the action of forces in any direction. Specifically, the radial clamping unit 21 is responsible for resisting the radial force from the cylindrical part B, while the axial clamping unit is responsible for controlling the axial force. The design of this comprehensive clamping mechanism significantly improves the stability of the cylindrical part B during the processing process, and can ensure that the position and posture of the cylindrical part B remain unchanged regardless of the thermal stress in the arc additive process or the mechanical stress in the rolling process.

[0025] Although not shown in detail in the accompanying drawings, it is understandable that the axial clamping unit can be implemented in a variety of ways, and each implementation can clamp the cylindrical member B of different radial sizes, which is described in detail below. In one implementation, the axial clamping unit may include: an axial clamping base, which is fixed to the rotating member 10 and is used to support the structure of the entire axial clamping unit; an adjusting screw, which is installed on the axial clamping base and can move along the axial direction of the cylindrical member B to adapt to the cylindrical member B of different radial sizes and adjust the clamping force; a clamping block, which is connected to the adjusting screw and changes its position relative to the cylindrical member B by moving the screw to achieve clamping; a limiting device, which is arranged on the axial clamping base and is used to limit the movement range of the clamping block to prevent over-clamping or loosening; a driving mechanism, which can be electric, pneumatic or hydraulic drive, and is used to drive the movement of the adjusting screw. The operating principle of such an axial clamping unit is that the adjusting screw is driven by the driving mechanism to move along the axial direction of the cylindrical member B, and the clamping block moves accordingly to achieve axial clamping of the cylindrical member B. The clamping block can be designed with an anti-slip surface to enhance the friction with the cylindrical member B and ensure stable clamping. In addition, the limit device ensures that the clamping block does not exceed the preset safety range during the adjustment process. In another implementation, the axial clamping unit may include: a hydraulic cylinder, as the main driving force, to adjust the axial clamping force through the pressure change of the hydraulic oil; a piston rod, connected to the hydraulic cylinder, moving under the drive of the hydraulic cylinder to achieve clamping of cylindrical members B of different sizes; a clamping pad, installed at the end of the piston rod, for contacting the cylindrical member B; a pressure regulating valve, for controlling the pressure of the hydraulic oil, thereby adjusting the clamping force. The operating principle of such an axial clamping unit is that by adjusting the pressure regulating valve, the pressure in the hydraulic cylinder is changed, thereby driving the piston rod to move, and achieving axial clamping of the cylindrical member B.

[0026] In a specific embodiment of the present disclosure, see Figure 6 Combined with Figure 3 The device 1 may further include a lifting mechanism 40 for lifting the cylindrical member B to a position where the longitudinal axis LA of the cylindrical member B is colinear with the rotation axis RA.

[0027] In this case, the operator can easily place the cylindrical part B on the lifting mechanism 40, and move the cylindrical part B to a position colinear with the rotation axis RA through the lifting function of the lifting mechanism 40, thereby facilitating the clamping of the clamping mechanism 20, because this step is a key prerequisite for achieving effective clamping of the cylindrical part B by the clamping mechanism 20. Through the precise control of the lifting mechanism 40, the cylindrical part B can be easily moved to the desired position, preparing for the subsequent clamping and processing process.

[0028] In a specific embodiment of the present disclosure, see Figure 6 Combined with Figure 1 , the lifting mechanism 40 may include: For example, a lifting platform 46 driven by a hydraulic cylinder; A first hinge 41 and a second hinge 42 hinged to the lifting platform 46, the first hinge 41 and the second hinge 42 being hinged to be able to rotate about a hinge axis HA below the rotation axis RA and parallel to the rotation axis RA; A first roller 43, the first roller 43 is configured to rotate with the first hinge 41 and is parallel to the rotation axis RA; A second roller 44, the second roller 44 is configured to rotate with the second hinge 42 and is parallel to the rotation axis RA, wherein the first roller 43 and the second roller 44 are used to jointly support the cylindrical member B in a manner parallel to the cylindrical member B; The driving unit 45 is used to drive the first hinge 41 and the second hinge 42 to rotate.

[0029] In this way, when the lifting platform 46 rises or falls, the first hinge 41 and the second hinge 42 can adapt to the cylindrical member B of different radial sizes and provide reliable support. The lifting function of the lifting platform 46 is combined with the rotation of the hinge to ensure the precise positioning of the cylindrical member B in the vertical direction. At the same time, the rotation ability of the hinge enables it to adapt to cylindrical members B of different sizes, thereby achieving all-round support for the cylindrical member B. Since the lifting and lowering of the cylindrical member B is achieved through the lifting platform 46, this process can be completed through simple operations. The vertical movement of the lifting platform 46 allows the longitudinal axis LA of the cylindrical member B to be easily aligned with the rotation axis RA. This design simplifies the alignment process and reduces the need for complex adjustment mechanisms, thereby improving the convenience and efficiency of the operation. By accurately controlling the height of the lifting platform 46, it can be ensured that the cylindrical member B can remain in line with the rotation axis RA at any time, which is crucial for subsequent processing steps. The precise lifting and lowering of the cylindrical part B and its alignment with the rotation axis RA are crucial to the processing accuracy. The coordinated work of the lifting platform 46 and the hinge ensures the stability and accuracy of the cylindrical part B during the processing. This stability and accuracy improves the processing quality, reduces processing errors, and thus improves the processing accuracy of the final product.

[0030] In a specific embodiment of the present disclosure, although not shown in the drawings, it can be understood that a heating unit can be provided inside the first roller 43 and the second roller 44, and the heating unit is used to heat the cylindrical member B.

[0031] In this way, it is allowed to heat the cylindrical part B evenly during the arc additive manufacturing process of the cylindrical part B, especially to heat the cylindrical part B of large size, so as to solve the problem of large temperature difference faced during the forming process. By controlling the temperature of the heating unit, the temperature gradient of the cylindrical part B during the arc additive manufacturing process can be reduced, thereby reducing the thermal stress caused by temperature change and reducing the uneven distribution of material properties. The setting of the heating unit helps to control the temperature of the cylindrical part B during the arc additive manufacturing process and reduce the residual thermal stress caused by rapid heating and cooling. This temperature control helps to suppress the cracking tendency of the cylindrical part B, especially when manufacturing cylindrical parts with complex inner wall structures. Residual thermal stress is a major factor leading to cracking. By maintaining the temperature stability of the cylindrical part B, the safety of the processing process and the quality of the final product can be significantly improved. Preheating or keeping the cylindrical part B warm through the heating unit can reduce temperature fluctuations during the processing and improve the stability of the processing. This temperature control also helps to reduce thermal deformation during the processing and ensure processing accuracy, which is particularly important when manufacturing parts with high precision requirements. The use of the heating unit can also optimize the microstructure and mechanical properties of the cylindrical part B. By precisely controlling the heating process, the recrystallization of the material can be promoted, the grains can be refined, and the strength and toughness of the material can be improved. This is of great significance for improving the final performance of the cylindrical part B, especially in applications that are subjected to complex mechanical loads. In summary, the technical solution of the present invention realizes the temperature control of the cylindrical part B by integrating the heating unit in the lifting mechanism 40, effectively reduces the temperature gradient, and suppresses the cracking tendency caused by residual thermal stress. This design not only improves the stability and reliability of the processing process, but also optimizes the microstructure and mechanical properties of the material, providing strong support for the manufacture of high-performance cylindrical parts.

[0032] In a specific embodiment of the present disclosure, see Figure 6 The lifting mechanism 40 may include a third roller 47, which is used to contact the bottom of the cylindrical member B during the process of lifting the cylindrical member B, and an ultrasonic vibration unit not shown in the drawings may be provided inside the third roller 47, which is used to reduce the content of bubbles in the molten pool formed by the arc additive.

[0033] like Figure 6As shown, the third roller 47 in the lifting mechanism 40 contacts the bottom of the cylindrical member B during the process of lifting the cylindrical member B. This design enables the third roller 47 to bear most of the weight and rolling load of the cylindrical member B, significantly reducing the burden of the first roller 43 and the second roller 44. Through this redistribution of weight and load, the pressure on the first roller 43 and the second roller 44 can be reduced, thereby reducing the risk of wear and damage caused by long-term high-load operation and extending the service life of the roller. An ultrasonic vibration unit is arranged inside the third roller 47, which is used to reduce the bubble content in the molten pool formed by arc additive manufacturing. In the arc additive manufacturing process, the bubbles in the molten pool are an important factor affecting the quality of the rib R. The application of the ultrasonic vibration unit can promote the escape of bubbles in the molten pool and reduce the residual bubbles in the rib R, thereby improving the density and mechanical properties of the rib R. Reducing the bubble content can not only improve the strength and toughness of the rib R, but also reduce the stress concentration and potential crack sources caused by bubbles, significantly improving the reliability and durability of the final product. In addition to reducing the bubble content, ultrasonic vibration can also promote material mixing and grain refinement, further improving the microstructure and mechanical properties of the rib R. This optimized manufacturing process helps to achieve more uniform material deposition and finer rib R molding, meeting high-precision and high-performance application requirements. In summary, the technical solution of the present invention effectively reduces the burden of the first roller 43 and the second roller 44 by the third roller 47 to bear most of the weight and rolling load of the cylindrical part B, and reduces the content of bubbles in the molten pool during the arc additive process through the ultrasonic vibration unit, thereby improving the quality of the rib R. This design not only improves the efficiency and reliability of the processing process, but also optimizes the performance of the final product, providing strong support for the manufacture of high-performance cylindrical parts.

[0034] In a specific embodiment of the present disclosure, the circumferential surface of the third roller 47 is coated with a wear-resistant and high-temperature resistant material.

[0035] The selection of this material takes into account the wear that may be caused by the contact and relative movement between the roller and the cylindrical member B during the arc additive manufacturing process. The application of wear-resistant materials significantly reduces the wear rate of the roller surface, thereby extending the service life of the third roller 47 and reducing the frequency of maintenance and replacement due to wear. In addition to wear resistance, the material coated on the third roller 47 also has the characteristic of high temperature resistance. During the arc additive manufacturing process, the roller surface may be thermally damaged due to the high temperature. The use of high temperature resistant materials can protect the roller from high temperatures and prevent material degradation or damage caused by long-term high temperature, further extending the service life of the third roller 47. The application of wear-resistant and high temperature resistant materials reduces the maintenance requirements and replacement frequency of the third roller 47, thereby reducing maintenance costs. In addition, due to the extended service life of the roller, the downtime caused by repairing or replacing the roller is also reduced accordingly, which improves the working efficiency and production continuity of the entire processing system. The wear-resistant and high-temperature-resistant characteristics of the third roller 47 improve its stability and reliability during the processing. As a key component for supporting and transmitting loads, the stability of the performance of the roller directly affects the processing quality of the cylindrical part B and the continuity of the processing process. By reducing the risk of failure due to wear or thermal damage, the improved design of the third roller 47 provides a more stable and reliable support for the entire processing system. In summary, the technical solution of the present invention effectively extends the service life of the third roller 47, reduces maintenance costs and downtime, and improves the stability and reliability of the processing process by coating the circumferential surface of the third roller 47 with wear-resistant and high-temperature-resistant materials. This design not only improves the performance of a single roller, but also has a positive impact on the efficiency and reliability of the entire arc additive manufacturing system.

[0036] In a specific embodiment of the present disclosure, see Figure 3 The device 1 may further include a translation mechanism 50 , which is used to translate the cylindrical member B to the lifting mechanism 40 .

[0037] In this case, the operator can easily place the cylindrical part B onto the translation mechanism 50, for example by hoisting or using a forklift, and when the cylindrical part B is pushed toward the lifting mechanism 40, the translation mechanism 50 can perform a translation function to move the cylindrical part B to the lifting mechanism 40, thereby facilitating the lifting of the lifting mechanism 40.

[0038] In a specific embodiment of the present disclosure, see Figure 3 The translation mechanism 50 may include a first row of rollers 51 and a second row of rollers 52, the first row of rollers 51 and the second row of rollers 52 being used to support the cylindrical member B in a manner of contacting the first busbar and the second busbar of the cylindrical member B, respectively, wherein the rotation axis TA of each roller in the first row of rollers 51 and the second row of rollers 52 is aligned with the first busbar and the second busbar of the cylindrical member B. Figure 3The translation direction TD of the cylindrical member B, schematically indicated by a straight arrow in FIG. , is perpendicular and contacts the cylindrical member B via a radial edge.

[0039] The translation mechanism 50 is designed with a first row of rollers 51 and a second row of rollers 52. The two rows of rollers are in contact with the first busbar and the second busbar of the cylindrical member B, respectively, and jointly support the cylindrical member B. In this way, the translation mechanism 50 can adapt to cylindrical members B of different radial sizes. This design enables the translation mechanism 50 to effectively support and carry the cylindrical member B regardless of how the size of the cylindrical member B changes, thereby ensuring wide applicability. Since the rollers are in contact with the busbars of the cylindrical member B, this contact mode provides good support, so that the cylindrical member B can maintain balance during the translation process and is not prone to tipping or rolling. The use of the translation mechanism 50 not only improves the efficiency of carrying the cylindrical member B, but also improves the safety of the entire processing process. The operator no longer needs to manually carry the cylindrical member B, which reduces labor intensity and the risk of injury. In addition, the translation mechanism 50 can achieve rapid positioning of the cylindrical member B, shorten the processing preparation time, and thus improve production efficiency. Once the cylindrical part B is moved to the lifting mechanism 40 by the translation mechanism 50, the lifting mechanism 40 can lift it quickly and steadily. This collaborative working mechanism ensures the stability of the cylindrical part B during the entire processing process, and it can maintain its correct position and posture whether in the arc additive process or the rolling process.

[0040] In a specific embodiment of the present disclosure, see Figure 3 Each roller in the first row of rollers 51 and the second row of rollers 52 can be adjusted so that the plane in which it is located intersects the longitudinal axis LA of the supported cylindrical member B. The plane in which it is located here means that, unlike the drum, the roller can be regarded as a thin sheet-like part, so that the roller can be considered to be in a certain plane.

[0041] This design ensures that the weight of the cylindrical member B and the force that may be generated during the handling process will be transmitted along the direction of the rotation axis TA of the roller. Since the force is transmitted along the axis of the roller, the risk of the roller being deformed due to improper force is greatly reduced. This optimized force-bearing method improves the durability of the roller and extends its service life. By ensuring that the force of the cylindrical member B is transmitted through the rotation axis TA of the roller, the roller in the translation mechanism 50 can more effectively bear the weight of the cylindrical member B. This design improves the bearing capacity of the roller, allowing the translation mechanism 50 to carry a heavier cylindrical member B, thereby expanding the scope of application of the technical solution disclosed herein.

[0042] It should be noted that the technical solutions described in the embodiments of the present disclosure can be combined arbitrarily without conflict.

[0043] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A device for manufacturing ribs on the inner wall of a cylindrical member, characterized in that: The device comprises: a rotating member configured to be rotatable about a rotation axis; a clamping mechanism configured to rotate with the rotating member and for clamping the cylindrical member so that the longitudinal axis of the cylindrical member is colinear with the rotation axis; A processing device is used to implement arc material addition on the inner wall of the cylindrical member and roll the added material to obtain the convex ribs. The processing device is configured to be movable in the axial direction of the clamped cylindrical member.

2. The device for manufacturing ribs on the inner wall of a cylindrical member according to claim 1, characterized in that: The rotating member is a gear ring, which rotates around its own central axis through gear transmission.

3. The device for manufacturing ribs on the inner wall of a cylindrical member according to claim 1 or 2, characterized in that: The clamping mechanism comprises a radial clamping unit, and the radial clamping unit is used to clamp the cylindrical member in the radial direction of the cylindrical member.

4. The device for manufacturing ribs on the inner wall of a cylindrical member according to claim 3, characterized in that: The radial clamping unit comprises: a base, the base being fixed to the rotating member and being formed with a first mating portion; A displacement member, the displacement member is formed with a plurality of second matching portions, each of the plurality of second matching portions is configured to be able to match with the first matching portion to fix the displacement member to the base, and the displacement member is formed with a screw hole; A bolt, wherein the bolt cooperates with the screw hole, Wherein, the cylindrical member is clamped by the bolt through the second matching portion being matched with the first matching portion and the bolt translating in the screw hole.

5. The device for manufacturing ribs on the inner wall of a cylindrical member according to claim 3, characterized in that: The clamping mechanism further comprises an axial clamping unit, and the axial clamping unit is used to clamp the cylindrical member in the axial direction of the cylindrical member.

6. The device for manufacturing ribs on the inner wall of a cylindrical member according to claim 1 or 2, characterized in that: The apparatus further comprises a lifting mechanism for lifting the cylindrical member to a position where a longitudinal axis of the cylindrical member is in line with the rotation axis.

7. The apparatus for manufacturing ribs on the inner wall of a cylindrical member according to claim 6, characterized in that: The lifting mechanism comprises: Lifting platform; A first hinge and a second hinge hinged to the lifting platform, wherein the first hinge and the second hinge are hinged to be rotatable about a hinge axis below the rotation axis and parallel to the rotation axis; a first roller configured to rotate with the first hinge and parallel to the rotation axis; a second roller, the second roller being configured to rotate together with the second hinge and parallel to the rotation axis, wherein the first roller and the second roller are used to jointly support the cylindrical member in a manner parallel to the cylindrical member; A driving unit is used to drive the first hinge and the second hinge to rotate.

8. The apparatus for manufacturing ribs on the inner wall of a cylindrical member according to claim 6, characterized in that: The device further comprises a translation mechanism for translating the cylindrical member to the lifting mechanism.

9. The apparatus for manufacturing ribs on the inner wall of a cylindrical member according to claim 8, characterized in that: The translation mechanism includes a first row of rollers and a second row of rollers, and the first row of rollers and the second row of rollers are used to jointly support the cylindrical member in a manner of contacting the first busbar and the second busbar of the cylindrical member respectively, wherein the rotation axis of each roller in the first row of rollers and the second row of rollers is perpendicular to the translation direction of the cylindrical member and contacts the cylindrical member through radial edges.

10. The apparatus for manufacturing ribs on the inner wall of a cylindrical member according to claim 9, characterized in that: Each of the first row of rollers and the second row of rollers can be adjusted to lie in a plane that intersects a longitudinal axis of the supported cylindrical member.

Images