Blank broaching machine for ring rolling machining

Abstract

The invention relates to the technical field of broaching machining, in particular to a blank broaching machine for ring rolling machining, which comprises a plurality of rolling bodies distributed oppositely, the rolling bodies are used for extruding blanks, power structures are arranged at two ends of each rolling body, and the power structures are used for providing moving power for the rolling bodies; the round hole in the middle of the blank is machined in a rolling and reaming mode, one-time forming of the blank can be facilitated, repeated reaming operation is not needed, the operation mode is simplified, the working efficiency is improved, the die cost is reduced, the round hole in the blank can form any diameter through the rolling and reaming mode, and the production efficiency is improved. Therefore, the functionality of the equipment is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of reaming processing, and particularly relates to a blank reaming machine for ring rolling processing. Background Art

[0002] With the surge in demand for large ring-shaped components in the high-end equipment manufacturing field, traditional manufacturing processes are facing the pressure of innovation. As the core load-bearing components of key equipment such as wind turbine generators, aero-engine casings, and nuclear reactor pressure vessels, the geometric accuracy, integrity of material flow lines, and mechanical properties of ring forgings directly determine the service life of the equipment. In recent years, the transformation of the global energy structure has promoted the wind power flange diameter to break through the 12-meter level, and the overall aero-engine casing tends to be thin-walled and lightweight. The geometric characteristics and material properties of such components put forward higher requirements for blank preforming: it is necessary to ensure the forging penetration to eliminate casting defects, and at the same time control the metal flow direction to form a continuous fiber structure, which poses a major challenge to the traditional free forging and blanking process.

[0003] In the ring-shaped component industrial chain, before the blank is subjected to ring rolling processing, it is necessary to generate a circular hole with a sufficiently large diameter in the middle to facilitate its installation on the ring rolling machine. The traditional treatment 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, and then replace the molds with different diameters to gradually increase the hole in the middle of the blank to meet the specified diameter requirements, that is, it is necessary to continuously ream the blank. However, this method requires a large number of molds with different diameters, which will cost a lot, and there are many repetitive operations in the continuous reaming process. Workers need to frequently turn the blank, replace the molds, etc., consuming a large amount of manpower and having low work efficiency. At the same time, this reaming method can only produce holes with specified sizes and cannot machine circular holes of any size. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a blank reaming machine for ring rolling processing, and the specific technical solution adopted is as follows: A blank reaming machine for ring rolling processing of the present invention includes a plurality of rolling bodies distributed oppositely, and the rolling bodies are used for extruding the blank. Power structures are arranged at both ends of each rolling body, and the power structures are used to provide moving power for the rolling bodies; The power structure includes a slider installed at the end of the rolling body, a guide rail cooperating with the slider, a worm and a worm gear cooperating with each other, and a threaded rod and a threaded sleeve cooperating with each other. The worm is meshed and connected with the worm gear, and the worm gear is installed on the rolling body. The threaded rod is threadedly connected with the threaded sleeve, and the rolling body is rotatably installed on the threaded sleeve.

[0005] Further, the axis of the rolling body is vertical, and a plurality of the rolling bodies approach or move away from each other synchronously in the horizontal direction.

[0006] Further, the reaming machine further includes two fixed bases arranged vertically, and the distance between the two fixed bases can be adjusted; The rolling body includes two cylinders arranged vertically. The two cylinders are butted, and the power structures on a plurality of the cylinders located on the same side in the vertical direction are all installed in the corresponding fixed base.

[0007] Further, insertion structures are provided on the opposite end faces of the two cylinders. The insertion structure includes a slot opened on one end face and a socket provided on the other end face and cooperating with the slot. A jack is coaxially opened in the slot, and a plug post cooperating with the jack is provided on the socket.

[0008] Further, a plurality of side edges are provided on the outer wall of the socket, and a plurality of side grooves cooperating with the side edges are opened on the inner wall of the slot.

[0009] Further, the diameter of the middle part of the rolling body is larger than the diameters of its two ends.

[0010] Further, a plurality of convex ribs are provided on the outer wall of each cylinder, and the length direction of the convex ribs is along the generatrix direction of the outer shape of the cylinder; The moving mode of the cylinder on the horizontal plane is intermittent movement.

[0011] Further, a plurality of supporting columns are provided on the outer wall of each cylinder.

[0012] The beneficial effects of the present invention are as follows: By adopting the method of rolling reaming to process the middle round hole of the blank, the blank can be conveniently formed at one time, without multiple repeated reaming operations, the operation method is simplified, the working efficiency is improved, the mold cost is reduced, and the method of rolling reaming can make the round hole on the blank form any diameter size, thereby effectively improving the functionality of the equipment. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the present invention; Figure 2It is a schematic diagram of the internal structure of the fixed base in the embodiment of the present invention; Figure 3 is Figure 2 a schematic diagram of the structure from another perspective; Figure 4 It is a schematic diagram of the structure of the rolling body in the embodiment of the present invention; Figure 5 is Figure 4 a schematic diagram of the partial sectional structure of...; Figure 6 It is a schematic diagram of the sectional structure of a cylinder in the rolling body; Figure 7 It is a schematic diagram of the structure of another cylinder in the rolling body; Figure 8 It is a schematic diagram of the structure of the first inclination mode of the supporting column in the embodiment of the present invention; Figure 9 It is a schematic diagram of the structure of the second inclination mode of the supporting column in the embodiment of the present invention.

[0015] Reference numerals: 1. Rolling body; 2. Slide block; 3. Guide rail; 4. Worm; 5. Worm gear; 6. Threaded rod; 7. Threaded sleeve; 8. Fixed base; 9. Cylinder; 10. Slot; 11. Jack; 12. Socket; 13. Plug post; 14. Side edge; 15. Side groove; 16. Convex rib; 17. Supporting column. Detailed implementation manners

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying 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 should not be construed as a limitation of the present invention.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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 situations. This embodiment is written in a progressive manner.

[0019] As Figures 1 to 7 shown, a blank hole expanding machine for ring rolling processing according to the present invention includes a plurality of rolling bodies 1 distributed oppositely, and the rolling bodies 1 are used for extruding the blank. Power structures are arranged at both ends of each of the rolling bodies 1, and the power structures are used to provide moving power for the rolling bodies 1; The power structure includes a slider 2 installed at the end of the rolling body 1, a guide rail 3 cooperating with the slider 2, a worm 4 and a worm gear 5 cooperating with each other, a threaded rod 6 and a threaded sleeve 7 cooperating with each other. The worm 4 is meshed and connected with the worm gear 5, and the worm gear 5 is installed on the rolling body 1. The threaded rod 6 is threadedly connected with the threaded sleeve 7, and the rolling body 1 is rotatably installed on the threaded sleeve 7; In the present invention, a number of rolling elements 1 can be distributed in any direction such as the horizontal direction, the vertical direction, the inclined direction, etc., so that the blank can be processed in any direction to meet the requirements of different working environments; the number of rolling elements 1 is arranged in a ring shape, so that the number of rolling elements 1 can be in contact with the inner wall of the round hole on the blank at the same time, so as to realize the operation of simultaneously expanding the hole of the blank by extruding with a number of rolling elements 1; the power structures arranged at both ends of the rolling element 1 can provide power for the rolling element 1 at the same time, so that the rolling element 1 can run smoothly and avoid uneven force on the rolling element 1 caused by the offset of the acting force; the slider 2 and the guide rail 3 can play a guiding role for the rolling element 1. The end of the rolling element 1 is rotatably installed on the slider 2. When the slider 2 slides on the guide rail 3, a number of rolling elements 1 approach or move away from each other. When a number of rolling elements 1 approach each other, the overall space they occupy is small. Therefore, a number of rolling elements 1 can be normally inserted into the round hole in the middle of the blank. When a number of rolling elements 1 move away from each other, they can push the inner wall of the round hole in the middle of the blank to increase the diameter of the round hole, so as to achieve the purpose of expanding the hole; the worm 4 and the worm gear 5 are mainly used to provide rotational power for the rolling element 1, so that when the rolling element 1 extrudes the round hole on the blank, the rolling element 1 can rotate the blank on a number of rolling elements 1 in a rolling manner, so as to realize the comprehensive extrusion treatment of the inner wall of the round hole on the blank, make the force and deformation of the blank uniform, and avoid tearing or causing internal stress in the blank; since the worm 4 and the worm gear 5 can drive the rolling element 1 to rotate actively, when the rolling element 1 rolls a blank with a relatively high hardness, the rotational speed of the rolling element 1 can be relatively fast. In this way, when the rolling element 1 moves the same distance, the number of rolling cycles that the blank is subjected to is increased. When the hardness of the blank is relatively low, the rotational speed of the rolling element 1 can be relatively slow. In this way, when the rolling element 1 moves the same distance, the number of rolling cycles that the blank is subjected to is reduced; the threaded rod 6 and the threaded sleeve 7 are mainly used to provide moving power for the rolling element 1, so that a number of rolling elements 1 can move away from or close to each other; Take Figures 1 to 3 as an example. When the number of rolling elements 1 is two, one guide rail 3 on the same side of the rolling element 1 can be used. Two sliders 2 are simultaneously slidably installed on the guide rail 3. The corresponding worm 4 and threaded rod 6 can both be one. And the thread directions on the left and right sides of one threaded rod 6 are opposite. The worm 4 can drive the two worm gears 5 to rotate synchronously in the same direction. The threaded rod 6 can drive the two rolling elements 1 to move synchronously in the opposite direction; It should be noted that when the rolling body 1 moves relative to the worm 4, the worm wheels 5 on the rolling body 1 roll on the worm 4, and the moving 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, the rotation speeds of the two rolling bodies 1 will be inconsistent, which will cause frictional movement between a certain rolling body 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 direction of the worm 4 are inconsistent, that is, by using the way that the worm 4 drives the two worm wheels 5 to perform differential motion, the rotation speeds of the two rolling bodies 1 during movement are made consistent; During 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 moving power for each rolling body 1. When several rolling bodies 1 move away from each other synchronously, the outer wall of the rolling body 1 contacts the inner wall of the middle round hole of the blank, and the rolling body 1 performs rolling treatment on the blank, so that the diameter of the middle round hole of the blank gradually increases, and the blank can perform circular motion. In this way, the rolling body 1 can achieve a comprehensive hole expanding treatment method for the blank; By adopting the method of rolling hole expansion to process the middle round hole of the blank, it is convenient to form the blank in one step, without the need for multiple repeated hole expansion operations, simplifies the operation method, improves work efficiency, reduces the mold cost, and the method of rolling hole expansion can make the round hole on the blank have any diameter size, thereby effectively improving the functionality of the equipment.

[0020] Optimized from the above implementation, the axis of the rolling body 1 is vertical, and several of the rolling bodies 1 approach or move away from each other synchronously in the horizontal direction; Setting the axis of the rolling body 1 in a vertical state and its moving direction on the horizontal plane can perform hole expanding processing on the blank in the horizontal direction. This method can make the axis of the blank coincide with the direction of gravity, suppress radial deflection deformation, and facilitate the material to flow more evenly during rolling.

[0021] Optimized from the above implementation, the hole expanding machine further includes two fixed bases 8 arranged vertically, and the distance between the two fixed bases 8 is adjustable; The rolling body 1 includes two cylinders 9 arranged vertically. The two cylinders 9 are butted, and the power structures on several cylinders 9 located on the same side in the vertical direction are all installed in the corresponding fixed base 8; Two fixed bases 8 are respectively used to support the power units at both ends of the rolling body 1. Motors for providing power for the rotation of the worm 4 and the threaded rod 6 can be installed on the fixed bases 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. Thus, it is convenient to place the blank on several rolling bodies 1 below. Then, move the two fixed bases 8 in the reverse direction to the initial position to make the two cylinders 9 dock into the rolling body 1 again. At this time, several 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 to remove the blank, thus facilitating the loading and unloading work of the blank.

[0022] Optimized based on the above implementation, insertion structures are provided on the opposite end faces of the two cylinders 9. The insertion structure includes a slot 10 opened on one end face and a socket 12 provided on the other end face and used in cooperation with the slot 10. A jack 11 is coaxially opened in the slot 10, and a plug post 13 used in cooperation with the jack 11 is provided on the socket 12. In the present invention, as Figures 4 to 7 shown, the socket 12 can be slidably inserted into the slot 10, and the plug post 13 can be slidably inserted into the jack 11, thereby enabling the docking work of the two cylinders 9. And this method can make the docking position between the two cylinders 9 have better strength, thus improving the overall strength of the rolling body 1. During actual use, a pair of columns can be provided on the outer end face of the cylinder 9. The pair of columns can be used to connect with the worm gear 5 and the threaded sleeve 7, and both the jack 11 and the plug post 13 extend into the pair of columns. Thus, when the power structure applies a force to one cylinder 9, it can use the pair of columns and the plug post 13 to apply a force to the other cylinder 9, so that both ends of each cylinder 9 can receive direct and effective forces, improving the force balance of the two cylinders 9 and the overall strength of the rolling body 1 composed of the two cylinders 9.

[0023] Optimized based on the above implementation, several side edges 14 are provided on the outer wall of the socket 12, and several side grooves 15 used in cooperation with the side edges 14 are opened on the inner wall of the slot 10. To prevent relative movement between the two cylinders 9 on the rolling body 1 driven by different power structures, the side edges 14 and the side grooves 15 can be used to achieve the stable connection and synchronous movement mode of the two cylinders 9, improving the overall strength of the rolling body 1. During actual use, to facilitate the docking and assembly of the two cylinders 9, the openings of the slot 10, the openings of the jack 11, and the openings of each side groove 15 can be chamfered.

[0024] Optimized based on the above implementation, the diameter of the middle part of the rolling body 1 is larger than the diameters of its two ends. When the two cylinders 9 are in contact with the inner wall of the middle round hole of the blank during butt joint, at the butt joint 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 towards the axis direction of the blank. Although the amplitude of this bending deformation is small, since the two cylinders 9 are not tightly connected, after long-term use, the two cylinders 9 and their inner sockets 12 and plug posts 13 will deform and be damaged due to uneven force and stress concentration. To avoid this phenomenon, the above method can be adopted, that is, by specially setting the middle diameter of the rolling body 1, the outer wall shape of the rolling body 1 is in the shape of a waist drum. Using this shape, the forces exerted by the blank on the two cylinders 9 on the rolling body 1 can be in an inclined and intersecting state, thereby making the butt joint of the two cylinders 9 more stable and avoiding the concentration of forces at the butt joint position of the two cylinders 9 and causing deformation of the cylinders 9.

[0025] Optimized based on the above implementation, a number of convex ribs 16 are provided on the outer walls of each of the cylinders 9, and the length direction of the convex ribs 16 is along the generatrix direction of the outer shape of the cylinder 9; The moving mode of the cylinder 9 on the horizontal plane is intermittent movement; The intermittent movement mode of the cylinder 9 is that after the cylinder 9 moves outwards by a specified distance, it stops moving and only rotates. When the cylinder 9 rotates for a specified time, the cylinder 9 moves outwards again, and so on; a number of convex ribs 16 provided on the outer wall of the cylinder 9 can make the force exerted by the cylinder 9 on the blank more concentrated, thus facilitating the deformation of the blank. Combining with the intermittent movement mode of the cylinder 9, when the cylinder 9 moves by a specified distance, the cylinder 9 only rotates. At this time, the cylinder 9 uses a number of convex ribs 16 on it to perform extrusion deformation treatment on the blank. At a certain moment, the local position of the blank between two adjacent convex ribs 16 is not squeezed by the convex ribs 16, but when the rolling body 1 rotates multiple circles, this position can contact the convex ribs 16 and be squeezed. When the cylinder 9 rotates a specified number of circles, the reaming diameter of the blank reaches the requirement at the position of the cylinder 9. After that, the cylinder 9 moves another specified distance, thereby realizing the step-by-step reaming processing of the blank; since the moving position of the cylinder 9 is adjustable, the stopping position of the cylinder 9 can be determined arbitrarily.

[0026] Optimized based on the above implementation, a number of support posts 17 are provided on the outer walls of each of the cylinders 9; A number of support posts 17 on the lower cylinder 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 posts 17 on the upper cylinder 9 can be used to limit the top of the blank to prevent the blank from moving in the vertical direction; The specific shape of the support post 17 can be Figure 7 the shown cylindrical shape, or can be Figure 8 or Figure 9The conical shape shown, and the top of the cone is in a horizontal straight line, thus facilitating the line contact state between the supporting column 17 of the cone and the bottom of the blank; when the supporting column 17 adopts Figure 7 the structure shown, it only needs to support the blank. When the supporting column 17 adopts Figure 8 the manner shown, the axis of the supporting column 17 inclines downward. At this time, the rotational linear velocities at different positions of the horizontal straight line at the top of the supporting column 17 are different. When it contacts the bottom of the blank, the supporting column 17 in a differential state can perform friction skin removal treatment on the bottom of the blank. When adopting Figure 9 the manner shown, the axis of the supporting column 17 inclines upward. At this time, the difference between the rotational speeds at different positions of the horizontal straight line at the top of the supporting column 17 and the rotational speeds of different positions at the bottom of the blank is relatively small, and the wear between the supporting column 17 and the blank is less. Therefore, the above different structural forms of the supporting column 17 can be adopted according to different processing requirements.

[0027] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A blank reaming machine for ring rolling processing, characterized in that, It includes a number of rolling bodies distributed relatively, and the rolling bodies are used to extrude the blank. Power structures are arranged at both ends of each rolling body, and the power structures are used to provide moving power for the rolling bodies; The power structure includes a slider installed at the end of the rolling body, a guide rail used in cooperation with the slider, a worm and a worm wheel used in cooperation with each other, and a threaded rod and a threaded sleeve used in cooperation with each other. The worm is meshed and connected with the worm wheel, and the worm wheel is installed on the rolling body. The threaded rod is threadedly connected with the threaded sleeve, and the rolling body is rotatably installed on the threaded sleeve.

2. The blank reaming machine for ring rolling processing according to claim 1, characterized in that, The axis of the rolling body is vertical, and several rolling bodies approach or move away from each other synchronously in the horizontal direction.

3. The blank reaming machine for ring rolling processing according to claim 2, characterized in that, The reaming machine further includes two fixed bases distributed vertically, and the distance between the two fixed bases is adjustable; The rolling body includes two cylinders distributed vertically. The two cylinders are butted, and the power structures on several cylinders located on the same side in the vertical direction are all installed in the corresponding fixed bases.

4. A blank reaming machine for ring rolling processing according to claim 3, characterized in that, Insertion structures are arranged on the opposite end faces of the two cylinders. The insertion structure includes a slot opened on one end face and a socket arranged on the other end face and used in cooperation with the slot. A jack is coaxially opened in the slot, and a plug post used in cooperation with the jack is arranged on the socket.

5. A blank reaming machine for ring rolling processing according to claim 4, characterized in that, A number of side edges are arranged on the outer wall of the socket, and a number of side grooves used in cooperation with the side edges are opened on the inner wall of the slot.

6. A blank reaming machine for ring rolling processing according to claim 5, characterized in that, The diameter of the middle part of the rolling body is larger than the diameters of its two ends.

7. A blank reaming machine for ring rolling processing according to claim 6, characterized in that, A number of convex ribs are arranged on the outer wall of each cylinder, and the length direction of the convex ribs is along the generatrix direction of the outer shape of the cylinder; The moving mode of the cylinder on the horizontal plane is intermittent movement.

8. A blank reaming machine for ring rolling processing according to claim 7, characterized in that, A number of supporting columns are arranged on the outer wall of each cylinder.

Images