horizontal face mill

Abstract

The application discloses a horizontal end face rolling mill, which comprises a bottom plate, a workbench arranged at one end of the upper surface of the bottom plate, and a die rotatably installed at the upper end of the workbench, characterized in that the horizontal end face rolling mill further comprises a conical rolling head arranged opposite to the upper end side surface of the blank workpiece, the rolling head is arranged obliquely so that the lower side surface of the rolling head and the upper surface of the workpiece to be formed are consistent in the shape angle of the end surface in the diameter direction, a force receiving part is arranged at the rear end of the rolling head and extends upwards along the axial direction, a telescopic shaft and a main shaft motor transmission connection relatively fixed on the bottom plate are arranged behind the force receiving part along the axial direction, universal joints are arranged at the two ends of the telescopic shaft, and a pressing device is further arranged on the bottom plate at the force receiving part. The application has the advantages of more reliable rolling forming, higher forming precision, better avoidance of material waste, better satisfaction of the production requirements of ring-shaped components with diversified shapes and sizes, and better suitability for the forming of ring-shaped components with large taper and complex special-shaped sections.

Description

Technical Field

[0001] This invention relates to the field of plastic forming equipment technology, specifically to a horizontal end face rolling mill. Background Technology

[0002] Complex irregular cross-section ring components are widely used in high-end equipment manufacturing fields such as aerospace, nuclear power, and shipbuilding. Currently, the main manufacturing processes for these parts include ring rolling and die forging. However, for some large-tapered irregular cross-section ring components with small aspect ratios and complex cross-sectional profiles, especially those with significant upper and lower asymmetry in their large taper geometry, existing ring rolling equipment cannot form them in one step. The shape and dimensions must be guaranteed through subsequent machining, resulting in significant processing volume and material waste. Die forging on high-tonnage presses can form such components integrally, but as the component size increases, the forming load rises sharply, and existing high-tonnage forming equipment still cannot meet the requirements. Therefore, developing "low-load, high-efficiency" forming processes and equipment for complex irregular ring components is of great significance.

[0003] Roll forming is a localized, continuous incremental volume forming method. It applies periodic localized pressure to the workpiece in the die using rolling components such as the main rolling roller, allowing for the production of complex integral components under relatively small loads. Compared to ring rolling followed by cutting, rolled parts have more rational metal flow lines, better mechanical properties, and higher material utilization. Compared to die forging, roll forming has lower loads and lower equipment investment. However, existing roll forming equipment typically performs roll forming by applying axial force from the end face; for example, a rolling mill disclosed in CN 102303085 B belongs to this type of equipment. This method is mainly suitable for the production of small-sized, simple-shaped disc or ring parts. Forming complex cross-section ring components has the following problems: 1. When the height-to-diameter ratio of the workpiece is greater than 0.5, axial rolling will result in a "mushroom effect" where the workpiece end faces inward and the outer diameter direction is wide. This is especially true for large-tapered, complex, irregular cross-section ring components where most of the material is concentrated in the outer diameter. Excessive inward flow will cause material waste and incomplete filling; 2. The existing rolling equipment has a lack of flexibility in its structural design and high modification costs, which cannot meet the production needs of ring components with diverse shapes and sizes. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a horizontal end face rolling mill that is more reliable in rolling forming, has higher forming accuracy, and can better avoid material waste, so that it can better meet the production needs of ring components with diverse shapes and sizes, and is more suitable for forming ring components with large taper and complex irregular cross-sections.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A horizontal end-face rolling mill includes a base plate, a worktable is provided at one end of the upper surface of the base plate, a mold is rotatably mounted on the upper surface of the worktable, and the upper end of the mold has an opening for loading a blank workpiece. The mill is characterized by further including a conical rolling head positioned opposite the upper surface of the blank workpiece. The rolling head is obliquely arranged so that its lower surface and the upper surface of the workpiece to be formed have the same axial angle along the diameter direction (usually both are horizontal, but can also have an inclination angle). A force-bearing part is provided at the rear end of the rolling head extending axially upwards and backwards. A telescopic shaft is provided axially behind the force-bearing part and is driven by a main shaft motor relatively fixed on the base plate. Universal joints are provided at both ends of the telescopic shaft. A pressure-applying device is also provided on the base plate at the force-bearing part, and the pressure-applying device acts on the force-bearing part to apply downward pressure.

[0006] In this way, when using this equipment, the blank workpiece is placed into the mold, the main shaft motor is started to rotate, driving the rolling head to rotate. At the same time, the pressure device is activated, driving the rolling head to press down. The telescopic shaft and universal joints at both ends ensure that the downward movement of the rolling head is not affected. When the rolling head presses down, its lower side contacts the upper end of the blank workpiece and drives the blank workpiece to rotate. As the blank workpiece rotates, it completes the rolling and shaping of the upper end face of the workpiece. In this way, compared with a vertical rolling mill, this equipment has fewer restrictions on the position above the mold, making it suitable for processing larger and wider shapes and sizes of workpieces. The method of applying pressure on one side and forcing the workpiece to rotate and roll can better refine the grains on the end face of the component through rolling, thereby improving the forming quality.

[0007] Furthermore, a motor frame is also provided on the base plate. The motor frame mounts the main spindle motor and a gearbox. The output shaft of the main spindle motor and the input shaft of the gearbox are connected by belt drive. The output shaft of the gearbox is connected to the rear end of the telescopic shaft through a universal joint.

[0008] This facilitates the installation of the spindle motor and makes it easier to control the transmission speed.

[0009] Furthermore, the pressure application device includes a pressure application device bracket mounted on the base plate. A downward hydraulic telescopic device is vertically arranged at the upper end of the pressure application device bracket. The telescopic axis of the hydraulic telescopic device is arranged downward and a sleeve-shaped connecting shell is fixed at its lower end. The force-bearing part at the rear end of the rolling head is rotatably installed inside the connecting shell.

[0010] In this way, the pressure applying device can apply downward pressure to the rolling head by means of the hydraulic telescopic device, without affecting the rotation of the rolling head itself.

[0011] Furthermore, the support frame of the pressure application device is designed as a gantry structure, making it more stable and reliable.

[0012] Furthermore, the pressure-applying device bracket has an inwardly protruding support platform at the middle position of both sides, and a guide post is fixedly mounted on the upper surface of the support platform. Sliding sleeves that fit into the guide post are fixedly mounted on both sides of the connecting shell. This further ensures the stability of the pressing process.

[0013] Furthermore, the force-bearing part at the rear end of the rolling head is a stepped shaft structure, and the inner cavity of the connecting shell is a matching stepped shape. This ensures axial positioning between the two.

[0014] Furthermore, a worktable translation control mechanism is also provided between the base plate and the worktable. The worktable translation control mechanism is used to control the worktable to translate along the projection direction of the center line of the rolling head's main shaft on the base plate.

[0015] In this way, during the rolling process, the worktable can be controlled to move horizontally, allowing the rolling head to move towards the mold side while rolling the end face of the workpiece. This forces the rolled material to flow towards the mold side, causing plastic deformation and allowing it to better conform to the mold, resulting in rolling reinforcement and improved product forming quality, surface precision, and hardness. In practice, the horizontal length of the lower side of the rolling head can be set greater than the diameter width of one side of the upper end face of the workpiece. This ensures that the rolling head and worktable can fully conform to the upper end face of the workpiece during relative movement, better guaranteeing the aforementioned plastic deformation effect.

[0016] Furthermore, the worktable translation control mechanism includes a worktable guide rail mounted on the base plate, the worktable guide rail being arranged in the same direction as the horizontal projection direction of the rolling head axis, and a slider being provided on the lower surface of the worktable that slidably engages with the worktable guide rail. The worktable translation control mechanism also includes a telescopic device for worktable translation control that is horizontally fixed on the base plate, the telescopic device for worktable translation control having a telescopic main shaft arranged in the same direction as the worktable guide rail and connected to the worktable.

[0017] This makes it easier to control the translation of the worktable along the guide rail.

[0018] Furthermore, the telescopic device for controlling the translation of the worktable is a hydraulic device. It is inexpensive, has a large driving force, and is easy to control. Of course, it can also be implemented using a motor, lead screw, and nut mechanism, etc.

[0019] Furthermore, the pressure application device also includes an auxiliary cantilever that is horizontally suspended above the worktable. One end of the auxiliary cantilever is fixed to the connecting shell and is arranged in the vertical plane along the axis of the rolling head. A downward connecting arm is installed on the auxiliary cantilever, and the lower end of the connecting arm has a horizontally arranged auxiliary roller. The lower surface of the auxiliary roller and the lower surface of the rolling head are on the same horizontal plane and are arranged on the opposite side of the rolling head along the diameter direction of the upper end of the blank workpiece.

[0020] In this way, during the process of the pressing device driving the rolling head to press down, the auxiliary roller forms an auxiliary rolling head, which can press down on both ends of the working surface of the blank in the diameter direction together with the rolling head. Both ends are rolled down at the same time, which not only improves the rolling effect on the end face of the blank component, but also ensures the balance of the rolling force on the blank, greatly improving the reliability of the equipment.

[0021] Furthermore, the upper end of the connecting arm can be horizontally slidably fitted onto the auxiliary cantilever, and the auxiliary cantilever is also equipped with a connecting arm translation control mechanism connected to the connecting arm and used to control its horizontal movement.

[0022] In this way, through the connecting arm translation control mechanism, during the rolling forming process, the connecting arm and the lower auxiliary roller can be controlled to apply force towards the mold side, causing them to move in that direction. Since the main rolling roller and the auxiliary roller are positioned opposite each other, the main rolling roller will also simultaneously move towards the mold side. This greatly enhances the effect of forcing the material to flow and deform towards the mold side, allowing it to better adhere to the mold and achieve rolled reinforcement, thus improving the product's forming quality, surface precision, and hardness. A further significant advantage is that this structure can be used in conjunction with a worktable translation control mechanism. This mechanism controls the worktable's translation, ensuring a smooth rolling effect between the rolling head and the workpiece. Simultaneously, the connecting arm translation control mechanism controls the connecting arm to move in the same direction at twice the speed of the worktable, creating a reverse rolling effect between the auxiliary roller and the workpiece at the same speed as the rolling head. Therefore, while ensuring stable and reliable rolling, the moving rolling action better promotes material flow and deformation, further improving the surface forming effect and quality of the workpiece on the mold side. In practice, the length of the auxiliary roller can be set to be the same as the length of the lower surface of the rolling head, that is, both are greater than the width of one side of the upper end face of the blank workpiece in the diameter direction. This ensures that the auxiliary roller can fully fit the upper end face of the blank workpiece for rolling during the relative movement with the worktable, thus better ensuring the above-mentioned plastic deformation effect.

[0023] Furthermore, the connecting arm translation control mechanism includes a connecting arm translation motor fixed on the auxiliary cantilever, the connecting arm translation motor being connected to a connecting arm translation screw arranged in the same direction as the auxiliary cantilever, and the connecting arm translation screw being screwed into a connecting arm translation nut fixed at the upper end of the connecting arm.

[0024] In this way, the translation of the connecting arm is controlled by a lead screw and nut mechanism, resulting in a simple structure that is convenient, stable, and reliable. Of course, in practice, other translation control methods such as electric cylinders or hydraulic cylinders can also be used.

[0025] Furthermore, reinforcing ribs are horizontally connected between the pressure application device bracket and the motor frame, further improving the overall structural strength of the equipment.

[0026] Furthermore, an electrical box is also installed on the outer surface of the pressure device support. During implementation, the electrical box is connected to various power components that require electrical control, facilitating electrical control.

[0027] The beneficial effects of this invention are as follows: 1. Compared with ring rolling equipment, this invention, through the combined movement of the worktable and the main rolling roller, restricts the blank workpiece (i.e., the blank component) within the die cavity for incremental volume forming. Complex irregular cross-section ring components can be obtained without cutting after processing, significantly improving material utilization. 2. Compared to the open deformation of ring rolling equipment, this invention, relying on the constraint of the die groove on the worktable, can ensure the accuracy of forming complex cross-section ring parts. 3. During the end-face rolling process of this invention, the workpiece stress state is triaxial compressive stress, which can effectively improve the material's plasticity and forgeability. Simultaneously, the refined grains on the surface of the un-cut component are preserved, the continuity of the metal fibers is not disrupted, and the part performance is good. 4. Compared with traditional die forging, this invention can form complex irregular cross-section ring discs with asymmetrical geometric features under relatively small loads. 5. Compared with other rolling equipment, the main rolling roller and the worktable of the end face rolling mill of this invention can move relative to each other in the axial and radial directions. Therefore, while the main rolling roller rolls the blank axially, the material can flow unidirectionally towards the outer or inner diameter of the die, thereby reducing or eliminating the end face widening caused by the "mushroom effect," resulting in better filling effect and making it more suitable for forming irregular cross-section rings with large tapers or protruding inner diameters. 6. Traditional oscillating rolling equipment requires that the center point of the cone head of the main rolling roller with a large cone angle be fixed on the same axis as the center point of the lower die. However, this invention adopts a design with a small angle between the roller shaft and the horizontal axis. During forming, the center point of the cone head does not need to be fixed on the central axis of the lower die, and the horizontal position of the cone head can be adjusted according to the size of the ring, meeting the production needs of large-sized ring components. 7. The small tilt angle design of the main rolling roller shaft in the horizontal direction can meet the requirements of the horizontal machine body and the open worktable. The horizontal machine body has a simple structure and low manufacturing cost, and the open worktable can realize the production of various types of products.

[0028] In summary, the present invention has the advantages of more reliable rolling forming, higher forming accuracy, and better avoidance of material waste. It can better meet the production needs of ring components with diverse shapes and sizes, and is more suitable for forming ring components with large taper and complex irregular cross-sections. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0030] Figure 2 for Figure 1 The front view.

[0031] Figure 3 for Figure 1 Top view.

[0032] Figure 4 for Figure 1 A schematic diagram of the support structure for the pressure application device.

[0033] Figure 5 for Figure 1 A schematic diagram of the internal connecting shell of the pressure device support.

[0034] Figure 6 for Figure 1 A schematic diagram of the structure of the middle workbench section.

[0035] Figure 7 This is a schematic diagram of the structure of a large-tapered irregular cross-section ring component in a specific implementation example. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to specific embodiments. Detailed implementation method:

[0038] See Figure 1-6 As shown, a horizontal end-face rolling mill includes a base plate 1, a worktable 2 is provided at one end of the upper surface of the base plate 1, a mold 3 is rotatably mounted on the upper end of the worktable 2, and the upper end of the mold 3 has an opening for loading blank workpieces. The feature is that it also includes a conical rolling head 4 provided on one side surface of the upper end of the blank workpiece. The rolling head 4 is arranged obliquely so that the lower surface of its side surface and the upper surface of the workpiece to be formed have the same angular angle along the diameter direction (usually both are horizontal, but can also have an inclination angle). A force-bearing part 5 is provided at the rear end of the rolling head extending axially backward and upward. A telescopic shaft 6 is provided axially behind the force-bearing part 5 and is connected to a main shaft motor 7 that is relatively fixed on the base plate. Universal joints 8 are provided at both ends of the telescopic shaft 6. A pressure-applying device is also provided on the base plate 1 at the force-bearing part, and the pressure-applying device acts on the force-bearing part to apply downward pressure.

[0039] In this way, when using this equipment, the blank workpiece is placed into the mold, the main shaft motor is started to rotate, driving the rolling head to rotate. At the same time, the pressure device is activated, driving the rolling head to press down. The telescopic shaft and universal joints at both ends ensure that the downward movement of the rolling head is not affected. When the rolling head presses down, its lower side contacts the upper end of the blank workpiece and drives the blank workpiece to rotate. As the blank workpiece rotates, it completes the rolling and shaping of the upper end face of the workpiece. In this way, compared with a vertical rolling mill, this equipment has fewer restrictions on the position above the mold, making it suitable for processing larger and wider shapes and sizes of workpieces. The method of applying pressure on one side and forcing the workpiece to rotate and roll can better refine the grains on the end face of the component through rolling, thereby improving the forming quality.

[0040] The base plate is also equipped with a motor frame 9, which mounts the main spindle motor 7 and a gearbox 10. The output shaft of the main spindle motor and the input shaft of the gearbox are connected by belt drive, and the output shaft of the gearbox is connected to the rear end of the telescopic shaft by a universal joint 8.

[0041] This facilitates the installation of the spindle motor and makes it easier to control the transmission speed.

[0042] The pressure application device includes a pressure application device bracket 11 mounted on a base plate. A downward hydraulic telescopic device 12 is vertically arranged at the upper end of the pressure application device bracket 11. The telescopic axis of the hydraulic telescopic device 12 is arranged downward and a sleeve-shaped connecting shell 13 is fixed at its lower end. The force-bearing part 5 at the rear end of the rolling head is rotatably installed inside the connecting shell 13.

[0043] In this way, the pressure applying device can apply downward pressure to the rolling head by means of the hydraulic telescopic device, without affecting the rotation of the rolling head itself.

[0044] The pressure application device support 11 has an overall gantry structure, making it more stable and reliable.

[0045] The pressure-applying device bracket 11 has an inwardly protruding support platform 14 located at the middle of both sides inside. A guide post 15 is fixedly mounted on the upper surface of the support platform 14, and sliding sleeves 16 that fit inside the guide post are fixedly mounted on both sides of the connecting shell. This further ensures the stability of the pressing process.

[0046] The force-bearing part 5 at the rear end of the rolling head is a stepped shaft structure, and the inner cavity of the connecting shell 13 is a matching stepped shape. This ensures axial positioning between the two.

[0047] Among them, a worktable translation control mechanism is also provided between the base plate 1 and the worktable 2. The worktable translation control mechanism is used to control the worktable to translate along the projection direction of the center line of the rolling head main shaft on the base plate.

[0048] In this way, during the rolling process, the worktable can be controlled to move horizontally, allowing the rolling head to move towards the mold side while rolling the end face of the workpiece. This forces the rolled material to flow towards the mold side, causing plastic deformation and allowing it to better conform to the mold, resulting in rolling reinforcement and improved product forming quality, surface precision, and hardness. In practice, the horizontal length of the lower side of the rolling head can be set greater than the diameter width of one side of the upper end face of the workpiece. This ensures that the rolling head and worktable can fully conform to the upper end face of the workpiece during relative movement, better guaranteeing the aforementioned plastic deformation effect.

[0049] The worktable translation control mechanism includes a worktable guide rail 17 mounted on the base plate. The worktable guide rail 17 is arranged in the same direction as the horizontal projection direction of the rolling head axis. A slider 18 is provided on the lower surface of the worktable 2 and is slidably engaged with the worktable guide rail. The worktable translation control mechanism also includes a telescopic device 19 for worktable translation control that is horizontally fixed on the base plate. The telescopic device for worktable translation control has a telescopic main shaft that is arranged in the same direction as the worktable guide rail and is connected to the worktable.

[0050] This makes it easier to control the translation of the worktable along the guide rail.

[0051] The telescopic device 19 for controlling the translation of the worktable is a hydraulic device. It is inexpensive, has a large driving force, and is easy to control. Of course, it can also be implemented using a motor, lead screw, and nut mechanism, etc.

[0052] The pressure application device further includes an auxiliary cantilever 20 that is horizontally suspended above the worktable. One end of the auxiliary cantilever 20 is fixed to the connecting shell and is arranged in the vertical plane along the axis of the rolling head. A downward connecting arm 21 is installed on the auxiliary cantilever. The lower end of the connecting arm 21 has a horizontally arranged auxiliary roller 22. The lower surface of the auxiliary roller 22 and the lower surface of the rolling head are on the same horizontal plane and are arranged on the opposite side of the rolling head along the diameter direction of the upper end of the blank workpiece.

[0053] In this way, during the process of the pressing device driving the rolling head to press down, the auxiliary roller forms an auxiliary rolling head, which can press down on both ends of the working surface of the blank in the diameter direction together with the rolling head. Both ends are rolled down at the same time, which not only improves the rolling effect on the end face of the blank component, but also ensures the balance of the rolling force on the blank, greatly improving the reliability of the equipment.

[0054] The upper end of the connecting arm 21 is horizontally slidably sleeved on the auxiliary cantilever. The auxiliary cantilever is also equipped with a connecting arm translation control mechanism connected to the connecting arm and used to control its horizontal movement.

[0055] In this way, through the connecting arm translation control mechanism, during the rolling forming process, the connecting arm and the lower auxiliary roller can be controlled to apply force towards the mold side, causing them to move in that direction. Since the main rolling roller and the auxiliary roller are positioned opposite each other, the main rolling roller will also simultaneously move towards the mold side. This greatly enhances the effect of forcing the material to flow and deform towards the mold side, allowing it to better adhere to the mold and achieve rolled reinforcement, thus improving the product's forming quality, surface precision, and hardness. A further significant advantage is that this structure can be used in conjunction with a worktable translation control mechanism. This mechanism controls the worktable's translation, ensuring a smooth rolling effect between the rolling head and the workpiece. Simultaneously, the connecting arm translation control mechanism controls the connecting arm to move in the same direction at twice the speed of the worktable, creating a reverse rolling effect between the auxiliary roller and the workpiece at the same speed as the rolling head. Therefore, while ensuring stable and reliable rolling, the moving rolling action better promotes material flow and deformation, further improving the surface forming effect and quality of the workpiece on the mold side. In practice, the length of the auxiliary roller can be set to be the same as the length of the lower surface of the rolling head, that is, both are greater than the width of one side of the upper end face of the blank workpiece in the diameter direction. This ensures that the auxiliary roller can fully fit the upper end face of the blank workpiece for rolling during the relative movement with the worktable, thus better ensuring the above-mentioned plastic deformation effect.

[0056] The connecting arm translation control mechanism includes a connecting arm translation motor 23 fixed on the auxiliary cantilever, the connecting arm translation motor and a connecting arm translation screw 24 arranged in the same direction as the auxiliary cantilever, and the connecting arm translation screw 24 and a connecting arm translation nut 25 fixed on the upper end of the connecting arm 21 are screwed together.

[0057] In this way, the translation of the connecting arm is controlled by a lead screw and nut mechanism, resulting in a simple structure that is convenient, stable, and reliable. Of course, in practice, other translation control methods such as electric cylinders or hydraulic cylinders can also be used.

[0058] The pressure application device bracket 11 and the motor frame 9 are also horizontally connected by reinforcing ribs 26, which further improves the overall structural strength of the equipment.

[0059] An electrical box 27 is also installed on the outer surface of the pressure device bracket. During implementation, the electrical box is connected to each power component that requires electrical control, facilitating electrical control.

[0060] The following is further... Figure 7 Taking the processing and rolling process of the large-tapered irregular cross-section ring shown as an example, the working process, principle and effect of this device are described in detail.

[0061] The processing procedure is as follows: Step 1: Start the main spindle motor 7 with the equipment in the reset state. The torque of the main spindle motor 7 is transmitted to the gearbox 10. The gearbox 10 transmits the torque of the main spindle motor 7 to the rolling head 4 through the universal joint and the telescopic shaft 6. The rolling head 4 rotates counterclockwise. Step 2: The blank workpiece is placed into the mold 3 on the workbench 2. The rolling head 4 is driven by the hydraulic telescopic device 12 and descends rapidly. The rolling head 4 decelerates when the bottom surface of the rolling head 4 is 5mm away from the upper end surface of the blank and approaches the upper end surface of the blank at the set speed. Step 3: When the bottom surface of the rolling head 4 is 5mm away from the top surface of the billet, the worktable 7, carrying the mold 8 and the blank workpiece, moves away from the cone roller along the worktable track 17 at a set speed under the push of the telescopic device 19 for worktable translation control. Step 4: At the same time as the telescopic device 19 for the workbench translation control is started, the connecting arm translation motor 23 at the front end of the auxiliary cantilever 20 is started, driving the connecting arm 21 to move away from the compaction head 4 at twice the moving speed of the workbench 7. Step 5: The bottom surface of the rolling head 4 rolls the upper surface of the blank axially. The rolling head 4 moves downward on one hand and rotates around the cone axis on the other. The friction between the rolling head 4 and the blank workpiece drives the blank workpiece to rotate. The friction between the blank workpiece and the mold 3 drives the mold 3, the worktable 2 and the blank workpiece to rotate synchronously.

[0062] Step 6: While the mold 3 and the table 75 rotate synchronously with the blank workpiece, they move away from the cone roller along the worktable track 17. This causes the cone roller to apply axial extrusion force to the blank workpiece while generating radial outward friction force on the blank workpiece. Under the influence of this friction force, the material flows towards the outer diameter of the mold 3. Step 7: The auxiliary roller 22 presses down on the upper surface of the blank workpiece on the other side of the annular lower die to prevent the blank workpiece from warping or misaligning under the action of the rolling head 4. The friction between the blank workpiece and the auxiliary roller 22 drives the auxiliary roller 22 to rotate around its own roller shaft. At the same time, the auxiliary roller 22 moves away from the rolling head 4 at twice the moving speed of the worktable 7, ensuring that it moves in the opposite direction to the blank workpiece at the same speed as the rolling head 4. Step 8: As the rolling head 4 continues to move downward, the blank workpiece undergoes continuous plastic deformation between the rolling head 4 and the mold 3, gradually filling the cavity of the mold 3, and finally obtaining a ring forging with a large taper cross-section; when the tapered roller moves downward to the target height, the rolling head 4 stops feeding downward and continues to rotate at this height, while the worktable 7 and the auxiliary roller 22 continue to move radially. After the ring forging with a large taper cross-section rotates 3 to 5 times, the rolling head 4, the auxiliary roller 22 and the worktable 7 stop moving at the same time to ensure the surface flatness and dimensional accuracy of the ring forging with a large taper cross-section.

[0063] Step 9: The rolling head 4 and the auxiliary roller 22 are raised axially to the initial position, and the auxiliary roller 22 and the worktable 7 are retracted radially to the initial position. The large-tapered irregular cross-section ring forging is demolded under the action of the ejection cylinder 73 and the large-tapered irregular cross-section ring forging is taken out.

[0064] The rolling of the large-tapered irregular cross-section ring is completed through the above steps.

[0065] The rolling mill of this invention can also complete the rolling process of cylindrical parts with internal axial grooves. It adopts an annular groove mold, and then controls and adjusts the processing direction to be reversed based on the above steps, so that the material can be forced to flow into the mold to form during the rolling process. This will not be described in detail here.

[0066] The beneficial effects of this invention are as follows: 1. Compared with ring rolling equipment, this invention, through the combined movement of the worktable and the main rolling roller, restricts the blank workpiece (i.e., the blank component) within the die cavity for incremental volume forming. Complex irregular cross-section ring components can be obtained without cutting after processing, significantly improving material utilization. 2. Compared to the open deformation of ring rolling equipment, this invention, relying on the constraint of the die groove on the worktable, can ensure the accuracy of forming complex cross-section ring parts. 3. During the end-face rolling process of this invention, the workpiece stress state is triaxial compressive stress, which can effectively improve the material's plasticity and forgeability. Simultaneously, the refined grains on the surface of the un-cut component are preserved, the continuity of the metal fibers is not disrupted, and the part performance is good. 4. Compared with traditional die forging, this invention can form complex irregular cross-section ring discs with asymmetrical geometric features under relatively small loads. 5. Compared with other rolling equipment, the main rolling roller and the worktable of the end face rolling mill of this invention can move relative to each other in the axial and radial directions. Therefore, while the main rolling roller rolls the blank axially, the material can flow unidirectionally towards the outer or inner diameter of the die, thereby reducing or eliminating the end face widening caused by the "mushroom effect," resulting in better filling effect and making it more suitable for forming irregular cross-section rings with large tapers or protruding inner diameters. 6. Traditional oscillating rolling equipment requires that the center point of the cone head of the main rolling roller with a large cone angle be fixed on the same axis as the center point of the lower die. However, this invention adopts a design with a small angle between the roller shaft and the horizontal axis. During forming, the center point of the cone head does not need to be fixed on the central axis of the lower die, and the horizontal position of the cone head can be adjusted according to the size of the ring, meeting the production needs of large-sized ring components. 7. The small tilt angle design of the main rolling roller shaft in the horizontal direction can meet the requirements of the horizontal machine body and the open worktable. The horizontal machine body has a simple structure and low manufacturing cost, and the open worktable can realize the production of various types of products.

Claims

1. A horizontal end-face rolling mill, comprising a base plate, a worktable disposed at one end of the upper surface of the base plate, a mold rotatably mounted on the upper end of the worktable, the upper end of the mold having an opening for loading blank workpieces, characterized in that, It also includes a conical rolling head positioned facing the upper surface of the workpiece blank. The rolling head is angled so that its lower surface and the upper surface of the workpiece blank to be formed have the same axial angle. A force-bearing part is provided at the rear end of the rolling head, extending axially upwards and backwards. A telescopic shaft is provided axially behind the force-bearing part. The telescopic shaft is connected to a main shaft motor that is relatively fixed on the base plate. Universal joints are provided at both ends of the telescopic shaft. A pressure-applying device is also provided on the base plate at the force-bearing part, which acts on the force-bearing part and applies downward pressure. The pressure application device includes a pressure application device bracket mounted on a base plate. A downward hydraulic telescopic device is vertically arranged at the upper end of the pressure application device bracket. The telescopic axis of the hydraulic telescopic device is arranged downward and a sleeve-shaped connecting shell is fixed at the lower end. The force-bearing part at the rear end of the rolling head is rotatably installed inside the connecting shell. A worktable translation control mechanism is also provided between the base plate and the worktable. The worktable translation control mechanism is used to control the worktable to translate along the projection direction of the center line of the main shaft of the rolling head on the base plate. The pressure application device also includes an auxiliary cantilever horizontally suspended above the worktable, with one end of the auxiliary cantilever fixed to the connecting shell; a downward connecting arm is installed on the auxiliary cantilever, and a horizontally arranged auxiliary roller is provided at the lower end of the connecting arm. The lower surface of the auxiliary roller and the lower surface of the rolling head are on the same horizontal plane and are arranged on the opposite side of the rolling head along the diameter direction of the upper end of the blank workpiece. The upper end of the connecting arm can be horizontally slidably fitted onto the auxiliary cantilever. The auxiliary cantilever is also equipped with a connecting arm translation control mechanism, which is connected to the connecting arm and used to control its horizontal movement. The length of the auxiliary roller is set to be consistent with the length of the lower surface of the rolling head.

2. The horizontal end-face rolling mill as described in claim 1, characterized in that, A motor frame is also provided on the base plate. The motor frame mounts the main spindle motor and a gearbox. The output shaft of the main spindle motor and the input shaft of the gearbox are connected by belt drive. The output shaft of the gearbox is connected to the rear end of the telescopic shaft by a universal joint.

3. The horizontal end-face rolling mill as described in claim 1, characterized in that, The support frame of the pressure application device is in the form of a gantry structure.

4. The horizontal end-face rolling mill as described in claim 3, characterized in that, The pressure device bracket has an inwardly protruding support platform at the middle position of both sides inside. A guide post is fixedly installed on the upper surface of the support platform, and sliding sleeves that fit into the guide post are fixedly installed on both sides of the connecting shell.

5. The horizontal end-face rolling mill as described in claim 4, characterized in that, The force-bearing part at the rear end of the rolling head is a stepped shaft structure, and the inner cavity of the connecting shell is a matching stepped shape.

6. The horizontal end-face rolling mill as described in claim 1, characterized in that, The worktable translation control mechanism includes a worktable guide rail set on the base plate. The worktable guide rail is arranged in the same direction as the horizontal projection direction of the rolling head axis. A slider is provided on the lower surface of the worktable and can be slidably engaged with the worktable guide rail. The worktable translation control mechanism also includes a telescopic device for worktable translation control that is horizontally fixed on the base plate. The telescopic device for worktable translation control has a telescopic main shaft that is arranged in the same direction as the worktable guide rail and is connected to the worktable. The telescopic device for controlling the translation of the worktable is a hydraulic telescopic device.

7. The horizontal end-face rolling mill as described in claim 1, characterized in that, The connecting arm translation control mechanism includes a connecting arm translation motor fixed on the auxiliary cantilever, the connecting arm translation motor being connected to a connecting arm translation screw arranged in the same direction as the auxiliary cantilever, and the connecting arm translation screw being screwed into a connecting arm translation nut fixed at the upper end of the connecting arm.

Images