A blank reaming machine for ring rolling

Abstract

The present invention relates to the technical field of hole expansion processing, and in particular to a blank hole expansion machine for ring rolling processing, comprising a plurality of relatively distributed rolling bodies, the rolling bodies being used to extrude the blank, and power structures being provided at both ends of each rolling body, the power structures being used to provide moving power for the rolling bodies; by adopting the rolling hole expansion method to process the circular hole in the middle of the blank, the blank can be conveniently formed in one step without the need for repeated hole expansion operations, thus simplifying the operation method, improving work efficiency, and reducing mold costs; and the rolling hole expansion method can make the circular hole on the blank form any diameter size, thereby effectively improving the functionality of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of hole enlarging processing, in particular to a blank hole enlarging machine for ring rolling processing. Background Art

[0002] With the surge in demand for large annular components in high-end equipment manufacturing, traditional manufacturing processes are under pressure to innovate. Ring forgings are core load-bearing components for key equipment such as wind turbine bearings, aerospace engine casings, and nuclear reactor pressure vessels. Their geometric accuracy, material streamline integrity, and mechanical properties directly determine the service life of the equipment. In recent years, the transformation of the global energy structure has pushed the diameter of wind turbine flanges to exceed 12 meters, and the overall casing of aerospace engines has tended to be thin-walled and lightweight. The geometric characteristics and material properties of such components place higher demands on pre-forming blanks: it is necessary to ensure forgeability to eliminate casting defects, and to control the direction of metal flow to form a continuous fiber structure. This poses a major challenge to the traditional free forging blanking process.

[0003] In the annular component industry chain, before the blank is processed into a ring, a circular hole with a large enough diameter needs to be created in the middle of the blank to facilitate its installation on the ring rolling machine. The traditional processing method is to use a punching machine or a forging machine to press a cylindrical mold with a smaller diameter into the blank and penetrate the blank. Then, molds of different diameters are replaced to gradually increase the hole in the middle of the blank to meet the specified diameter requirement. That is, the blank needs to be continuously expanded. This method requires the use of more molds of different diameters, which will cost a lot of money. In addition, the continuous expansion process uses many repetitive operations. Workers need to frequently turn the blank, change molds, etc., which consumes a lot of manpower and has low work efficiency. At the same time, this expansion method can only produce holes of specified sizes and cannot process circular holes of any size. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a blank reaming machine for ring rolling, the specific technical solution adopted by the present invention is:

[0005] The present invention provides a blank reaming machine for ring rolling, comprising a plurality of relatively distributed rolling bodies, the rolling bodies being used to extrude the blank, and power structures being provided at both ends of each rolling body, the power structures being used to provide moving power for the rolling bodies;

[0006] The power structure includes a slider installed on the end of the rolling body, a guide rail used in conjunction with the slider, a worm and a worm wheel used in conjunction with each other, and a threaded rod and a threaded sleeve used in conjunction with each other. The worm is meshed with the worm wheel, and the worm wheel is installed on the rolling body. The threaded rod is threadedly connected to the threaded sleeve, and the rolling body is rotatably installed on the threaded sleeve.

[0007] Furthermore, the axis of the rolling body is vertical, and the plurality of rolling bodies move synchronously toward or away from each other in the horizontal direction.

[0008] Furthermore, the reaming machine further comprises two fixed bases distributed up and down, and the distance between the two fixed bases is adjustable;

[0009] The rolling body includes two columns distributed up and down, the two columns are butted together, and the power structures on several columns located on the same side in the vertical direction are all installed in the corresponding fixed base.

[0010] Furthermore, an interpenetrating structure is provided on the two opposite end faces of the two columns, and the interpenetrating structure includes a slot opened on one end face and a socket provided on the other end face and used in conjunction with the slot, a jack is coaxially opened in the slot, and a column is provided on the socket for use in conjunction with the jack.

[0011] Furthermore, a plurality of side edges are provided on the outer wall of the socket, and a plurality of side grooves for use in conjunction with the side edges are provided on the inner wall of the slot.

[0012] Furthermore, the diameter of the middle portion of the rolling body is larger than the diameters of both ends thereof.

[0013] Furthermore, a plurality of ridges are provided on the outer wall of each column, and the length direction of the ridges is along the generatrix direction of the outer shape of the column;

[0014] The column moves in an intermittent manner on the horizontal plane.

[0015] Furthermore, a plurality of supporting columns are provided on the outer wall of each column.

[0016] The beneficial effects of the present invention are:

[0017] By using the rolling expansion method to process the circular hole in the middle of the blank, the blank can be easily formed in one step without the need for repeated expansion operations, which simplifies the operation method, improves work efficiency, and reduces mold costs. In addition, the rolling expansion method can make the circular hole on the blank form any diameter, thereby effectively improving the functionality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1It is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic diagram of the internal structure of a fixed base in an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 Structural diagram from another perspective;

[0022] Figure 4 is a schematic structural diagram of a rolling body in an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A schematic diagram of a partial cross-sectional structure;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of a column in the rolling body;

[0025] Figure 7 It is a structural diagram of another column in the rolling body;

[0026] Figure 8 This is a structural diagram of the first tilting mode of the support column in an embodiment of the present invention;

[0027] Figure 9 It is a structural schematic diagram of the second tilting mode of the support column in an embodiment of the present invention.

[0028] Reference numerals:

[0029] 1. Rolling body; 2. Slider; 3. Guide rail; 4. Worm; 5. Worm wheel; 6. Threaded rod; 7. Threaded sleeve; 8. Fixed base; 9. Column; 10. Slot; 11. Socket; 12. Socket; 13. Plug column; 14. Side edge; 15. Side groove; 16. Protruding edge; 17. Support column. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” 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 simplifying the description, 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 cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integrated connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0033] like Figures 1 to 7 As shown, a blank reaming machine for ring rolling processing of the present invention comprises a plurality of relatively distributed rolling bodies 1, the rolling bodies 1 being used to extrude the blank, and a power structure being provided at both ends of each rolling body 1, the power structure being used to provide moving power for the rolling body 1;

[0034] The power structure includes a slider 2 mounted on the end of the rolling body 1, a guide rail 3 used in conjunction with the slider 2, a worm 4 and a worm wheel 5 used in conjunction with each other, a threaded rod 6 and a threaded sleeve 7 used in conjunction with each other, the worm 4 is meshedly connected with the worm wheel 5, and the worm wheel 5 is mounted on the rolling body 1, the threaded rod 6 is threadedly connected with the threaded sleeve 7, and the rolling body 1 is rotatably mounted on the threaded sleeve 7;

[0035] In the present invention, a plurality of rolling bodies 1 can be distributed in any direction such as horizontal direction, vertical direction, inclined direction, etc., so that the blank can be processed in any direction to adapt to the requirements of different working environments; a plurality of rolling bodies 1 are arranged in a ring shape, so that a plurality of rolling bodies 1 can contact the inner wall of the circular hole on the blank at the same time, so as to realize the operation of extruding and expanding the blank at the same time using a plurality of rolling bodies 1; the power structure arranged at both ends of the rolling body 1 can provide power to the rolling body 1 at the same time, so that the rolling body 1 can run smoothly and avoid the deviation of the force causing uneven force on the rolling body 1; the slider 2 and the guide rail 3 can play a guiding role for the rolling body 1, and the end of the rolling body 1 is rotatably installed on the slider 2. When the slider 2 slides on the guide rail 3, the plurality of rolling bodies 1 approach or move away from each other. When the plurality of rolling bodies 1 approach each other, the overall space they occupy is smaller, so the plurality of rolling bodies 1 can be normally inserted into the circular hole in the middle of the blank. When the plurality of rolling bodies 1 move away from each other, they can The inner wall of the circular hole is pushed to increase the diameter of the circular hole, thereby achieving the purpose of hole expansion; the worm 4 and the worm wheel 5 are mainly used to provide rotational power for the rolling body 1, so that when the rolling body 1 extrude the circular hole on the blank, the rolling body 1 can use the rolling method to make the blank rotate on several rolling bodies 1, thereby achieving comprehensive extrusion treatment of the inner wall of the circular hole on the blank, making the blank evenly stressed and deformed, avoiding tearing or causing internal stress in the blank; because the worm 4 and the worm wheel 5 can drive the rolling body 1 Active rotational motion. Therefore, when the rolling body 1 rolls a hard billet, the rotation speed of the rolling body 1 can be faster. In this way, when the rolling body 1 moves the same distance, the number of turns the billet is rolled on increases. When the billet is of lower hardness, the rotation speed of the rolling body 1 can be slower. In this way, when the rolling body 1 moves the same distance, the number of turns the billet is rolled on decreases. The threaded rod 6 and the threaded sleeve 7 are mainly used to provide moving power for the rolling body 1, so that several rolling bodies 1 can move away from or closer to each other.

[0036] by Figures 1 to 3 For example, when there are two rolling bodies 1, a single guide rail 3 can be used on the same side of the rolling body 1, and the two sliders 2 are slidably installed on the guide rail 3 at the same time. The corresponding worm 4 and threaded rod 6 can both be one, and the threads on the left and right sides of the threaded rod 6 can be rotated in opposite directions. The worm 4 can drive the two worm wheels 5 to rotate synchronously in the same direction, and the threaded rod 6 can drive the two rolling bodies 1 to move synchronously in opposite directions.

[0037] It should be noted that when the rolling body 1 moves relative to the worm 4, the worm wheel 5 on the rolling body 1 rolls on the worm 4, and the movement directions of the two worm wheels 5 are opposite. Therefore, if the pitches of the worm teeth on the two worm wheels 5 are the same and the pitches of the worm teeth on the worm 4 are the same, then the rotation speeds of the two rolling bodies 1 are inconsistent, which will cause friction between one of the rolling bodies 1 and the blank. To avoid this phenomenon, the pitches of the worm teeth on the left and right sides of the worm 4 along the axis of the worm 4 are inconsistent, that is, the worm 4 drives the two worm wheels 5 to perform differential motion, so that the rotation speeds of the two rolling bodies 1 are consistent when moving.

[0038] When in use, the worm 4 and the worm wheel 5 can provide rotational power for each rolling body 1, and the threaded rod 6 and the threaded sleeve 7 can provide movement power for each rolling body 1. When the plurality of rolling bodies 1 move away from each other synchronously, the outer wall of the rolling body 1 contacts the inner wall of the circular hole in the middle of the blank, and the rolling body 1 rolls the blank, so that the diameter of the circular hole in the middle of the blank gradually increases, and the blank can perform circular motion, so that the rolling body 1 can achieve a comprehensive hole expansion treatment for the blank;

[0039] By using the rolling expansion method to process the circular hole in the middle of the blank, the blank can be easily formed in one step without the need for repeated expansion operations, which simplifies the operation method, improves work efficiency, and reduces mold costs. In addition, the rolling expansion method can make the circular hole on the blank form any diameter, thereby effectively improving the functionality of the equipment.

[0040] Optimized in the above embodiment, the axis of the rolling body 1 is vertical, and a plurality of the rolling bodies 1 are synchronously moved toward or away from each other in the horizontal direction;

[0041] The axis of the rolling body 1 is set to a vertical state, and its moving direction is on the horizontal plane, so that the blank can be expanded in the horizontal direction. This method can make the axis of the blank coincide with the direction of gravity, inhibit radial flexural deformation, and make the material more uniform during rolling flow.

[0042] Optimizing the above embodiment, the reaming machine further includes two fixed bases 8 distributed up and down, and the distance between the two fixed bases 8 is adjustable;

[0043] The rolling body 1 includes two columns 9 distributed in an upper and lower direction, the two columns 9 are connected to each other, and the power structures on the columns 9 located on the same side in the vertical direction are all installed in the corresponding fixed base 8;

[0044] The two fixed bases 8 are respectively used to support the power units at both ends of the rolling body 1, and a motor for providing power for the rotation of the worm 4 and the threaded rod 6 can be installed on the fixed base 8; since the rolling body 1 is composed of two cylinders 9, and the distance between the two fixed bases 8 is adjustable, when the two fixed bases 8 are separated from each other, the two cylinders 9 on the rolling body 1 are separated from each other, thereby facilitating the placement of the blank on the lower side of the rolling bodies 1, and then the two fixed bases 8 are moved in the opposite direction to the initial position, so that the two cylinders 9 are re-connected to form a rolling body 1. At this time, the rolling bodies 1 are located inside the middle circular hole of the blank. When the blank processing is completed, the above method can be repeated and the blank can be removed, thereby facilitating the loading and unloading of the blank.

[0045] Optimized in the above embodiment, an interpenetrating structure is provided on the opposite end faces of the two columns 9, the interpenetrating structure comprising a slot 10 provided on one end face and a socket 12 provided on the other end face and used in conjunction with the slot 10, a socket 11 is coaxially provided in the slot 10, and a pin 13 is provided on the socket 12 for use in conjunction with the socket 11;

[0046] In the present invention, Figures 4 to 7 As shown, the socket 12 can be slidably inserted into the slot 10, and the plug post 13 can be slidably inserted into the socket 11, thereby enabling the two columns 9 to achieve docking. This method can also make the docking position between the two columns 9 have better strength, thereby improving the overall strength of the rolling body 1;

[0047] In actual use, a secondary column can be set on the outer end face of the column 9, which can be used to connect with the worm gear 5 and the threaded sleeve 7, and the socket 11 and the plug column 13 both extend into the secondary column, so that when the power structure applies a force to one column 9, it can use the secondary column and the plug column 13 to apply a force to the other column 9, so that both ends of each column 9 can be subjected to direct and effective force, thereby improving the force balance of the two columns 9 and the overall strength of the rolling body 1 composed of the two columns 9.

[0048] Optimizing the above embodiment, the outer wall of the socket 12 is provided with a plurality of side edges 14, and the inner wall of the slot 10 is provided with a plurality of side grooves 15 for use with the side edges 14;

[0049] In order to prevent the two columns 9 on the rolling body 1 from moving relative to each other when driven by different power structures, the side edges 14 and side grooves 15 can be used to achieve a stable connection and synchronous movement of the two columns 9, thereby improving the overall strength of the rolling body 1;

[0050] In actual use, in order to facilitate the docking and assembly of the two columns 9, the opening of the slot 10, the opening of the insertion hole 11 and the opening of each side groove 15 can be chamfered.

[0051] Optimized in the above embodiment, the diameter of the middle portion of the rolling body 1 is larger than the diameters of the two ends;

[0052] When the two cylinders 9 are in contact with the inner wall of the circular hole in the middle of the blank in the docking position of the two cylinders 9, the force exerted by the blank on this position will cause the middle part of the rolling body 1 to bend and deform toward the axis of the blank. Although the amplitude of the bending deformation is small, since the two cylinders 9 are not tightly connected, after long-term use, the two cylinders 9 and their internal sockets 12 and plugs 13 will be deformed and damaged due to uneven force, stress concentration and other phenomena. To avoid this phenomenon, the above-mentioned method can be adopted, that is, by making use of the special setting of the diameter of the middle part of the rolling body 1, the outer wall shape of the rolling body 1 is made into a waist drum shape. By using this shape, the force exerted by the blank on the two cylinders 9 on the rolling body 1 can be inclined and crossed with each other, thereby making the docking of the two cylinders 9 more stable and avoiding the force being concentrated at the docking position of the two cylinders 9 and causing deformation of the cylinders 9.

[0053] Optimizing the above embodiment, a plurality of ridges 16 are provided on the outer wall of each column 9, and the length direction of the ridges 16 is along the generatrix direction of the outer shape of the column 9;

[0054] The movement mode of the column 9 on the horizontal plane is intermittent movement;

[0055] The intermittent movement mode of the cylinder 9 is that when the cylinder 9 moves outward a specified distance, it stops moving and only performs rotational motion. After the cylinder 9 rotates for a specified time, the cylinder 9 moves outward again, and this is repeated; the several ridges 16 set on the outer wall of the cylinder 9 can make the force of the cylinder 9 on the blank more concentrated, thereby making it easier to deform the blank. Combined with the intermittent movement mode of the cylinder 9, when the cylinder 9 moves a specified distance, the cylinder 9 only performs rotational motion. At this time, the cylinder 9 uses the several ridges 16 thereon to extrude and deform the blank. At a certain moment, the local position of the blank between two adjacent ridges 16 is not squeezed by the ridges 16, but when the rolling body 1 rotates multiple times, the position can contact and be squeezed with the ridges 16. When the cylinder 9 rotates a specified number of times, the expanded diameter of the blank reaches the requirement of the position of the cylinder 9, and then the cylinder 9 moves a specified distance again, thereby realizing the gradual expansion processing of the blank; since the moving position of the cylinder 9 is adjustable, the stop position of the cylinder 9 can be determined at will.

[0056] Optimizing the above implementation, a plurality of support columns 17 are provided on the outer wall of each of the columns 9;

[0057] The plurality of support columns 17 on the lower column 9 can be used to lift the blank so that the blank will not fall on the rolling body 1. The setting of the support columns 17 on the upper column 9 can be used to limit the top of the blank to prevent the blank from moving in the vertical direction.

[0058] The specific shape of the support column 17 can be Figure 7 The cylindrical shape shown can also be Figure 8 or Figure 9 The cone shown in FIG, and the top of the cone is horizontal and straight, thereby making it easy to make the cone support column 17 in line contact with the bottom of the blank; when the support column 17 is Figure 7 In the structure shown, it only plays a role in supporting the blank. When the support column 17 adopts Figure 8 In the manner shown, the axis of the support column 17 is tilted downward. At this time, the rotational speed of the horizontal straight line at different positions on the top of the support column 17 is different. When it contacts the bottom of the blank, the support column 17 in the differential state can perform friction peeling on the bottom of the blank. Figure 9 In the manner shown, the axis of the support column 17 is tilted upward. At this time, the rotation speed at different positions of the horizontal straight line at the top of the support column 17 is slightly different from the rotation speed at different positions of the bottom of the blank, and the wear between the support column 17 and the blank is less. Therefore, the above-mentioned different structures of the support column 17 can be adopted according to different processing requirements.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A blank reaming machine for ring rolling, characterized in that: It includes a plurality of relatively distributed rolling bodies, the rolling bodies are used to extrude the blank, and both ends of each rolling body are provided with a power structure, the power structure is used to provide moving power for the rolling body; The power structure includes a slider installed at the end of the rolling body, a guide rail used in conjunction with the slider, a worm and a worm wheel used in conjunction with each other, a threaded rod and a threaded sleeve used in conjunction with each other, the worm is meshed with the worm wheel, and the worm wheel is installed on the rolling body, the threaded rod is threadedly connected to the threaded sleeve, and the rolling body is rotatably installed on the threaded sleeve; The axis of the rolling body is vertical, and the plurality of rolling bodies are synchronously moved toward or away from each other in the horizontal direction; The reaming machine further comprises two fixed bases distributed up and down, and the distance between the two fixed bases is adjustable; The rolling body includes two columns distributed vertically, the two columns are butted together, and the power structures on the columns located on the same side in the vertical direction are all installed in the corresponding fixed base; An interpenetrating structure is provided on the two opposite end surfaces of the two columns, and the interpenetrating structure includes a slot provided on one end surface and a socket provided on the other end surface and used in conjunction with the slot, a jack is coaxially provided in the slot, and a plug is provided on the socket for use in conjunction with the jack; The outer wall of the socket is provided with a plurality of side edges, and the inner wall of the slot is provided with a plurality of side grooves used in conjunction with the side edges; The diameter of the middle portion of the rolling body is larger than the diameters of the two ends thereof.

2. A blank reaming machine for ring rolling according to claim 1, characterized in that: A plurality of ridges are provided on the outer wall of each column, and the length direction of the ridges is along the generatrix direction of the outer shape of the column; The column moves in an intermittent manner on the horizontal plane.

3. A blank reaming machine for ring rolling according to claim 2, characterized in that: A plurality of supporting columns are arranged on the outer wall of each column.

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