Ring rolling machine capable of preventing ring piece from flashing

Abstract

The utility model discloses a ring rolling mill capable of preventing flash of a ring piece. The device is characterized in that a transmission assembly provides power for a press assembly, and the press assembly is driven by the transmission assembly to complete moving and rotating operation; the press assembly comprises a mandrel and a press shaft, and the mandrel is arranged below the press shaft; the ejection assembly is arranged below the press assembly, the supporting assembly is arranged on the opposite side of the ejection assembly, a ring blank is hung on the mandrel, the ejection assembly and the supporting assembly apply extrusion force to the two side faces of the ring blank respectively, the two side faces of the ejection roller are parallel to the vertical plane, and the ejection roller is used for applying extrusion force to the side faces of the ring blank. The bottom of the lifting oil cylinder is slidably connected to the moving rail, the supporting structure is arranged on a cylinder rod of the lifting oil cylinder, and a cylinder rod of the moving oil cylinder is connected with the lifting oil cylinder. The supporting roller is used for providing supporting force for the other side face of the ring blank. The device can prevent the ring piece from flashing, guarantees the flatness of the side face of the ring piece, is suitable for ring blanks with different diameters and thicknesses, and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of ring rolling machines, in particular to a ring rolling machine capable of preventing ring flash. Background Art

[0002] Ring rolling machine is a kind of rotary forging equipment. According to the structural characteristics of ring rolling equipment, it can be divided into two categories: vertical ring rolling machine and horizontal ring rolling machine. Among them, vertical ring rolling machine is suitable for medium and small rings, and is widely used in the plastic forming of rings such as inner and outer rings of bearings, wheel rims, railway wheel hoops, steam turbines, aircraft engines, aerospace equipment, etc. The vertical ring rolling machine is a core roller driven by an electric motor to rotate. In the process of downward pressure on the main shaft, it forms a pair of rollers with the core roller, and the ring blank on the core roller is repeatedly rolled. The inner and outer diameters of the ring are expanded, and the wall thickness is reduced, and the ring is gradually formed.

[0003] In the existing technical solutions, during the rolling process, due to the lack of axial restriction on the ring, the ring is prone to extend in the axial direction to form flash, which leads to increased subsequent deburring work, increased workers' workload, prolonged ring manufacturing time, and increased processing costs.

[0004] For example, the anti-flash ring rolling machine with authorization announcement number CN 216540682 U has a rolling groove on the outer circumferential wall of the rolling wheel, and a rolling part matched with the rolling groove is provided on the rolling shaft. When rolling the ring blank, the rolling part enters the rolling groove to confine the ring blank in the rolling groove, that is, the ring blank is subjected to the rolling pressure in the rolling groove throughout the entire process and is rolled into a ring-shaped part with an increased inner diameter. The ring blank is confined by the rolling groove in the axial direction. However, this kind of rolling wheel with a rolling groove has very high requirements on the strength of the rolling wheel, and the width of the rolling groove is constant, so the ring parts larger than the width of the rolling groove cannot be used; and the depth of the rolling groove is limited. For the ring parts with larger diameters, although it can prevent flash, the overall flatness of the ring parts cannot be guaranteed.

[0005] In order to solve the above technical problems, the utility model proposes a ring rolling machine for preventing ring flash. Summary of the invention

[0006] The utility model aims to overcome the deficiencies of the prior art and proposes a ring rolling machine for preventing ring flash, which can prevent ring flash and ensure the flatness of the side surfaces of the rings. The utility model is suitable for ring blanks with different diameters and thicknesses and has a wide range of applications.

[0007] In order to achieve the above objectives, the utility model proposes the following technical solutions:

[0008] A ring rolling machine for preventing ring flash, comprising a transmission assembly, a press assembly, an ejection assembly and a support assembly;

[0009] The transmission assembly provides power to the press assembly, and the press assembly completes movement and rotation operations driven by the transmission assembly; the press assembly includes a core shaft and a pressing shaft, and the core shaft is below the pressing shaft; the ejection assembly is arranged below the press assembly, and the support assembly is arranged on the opposite side of the ejection assembly, and the ring blank is hung on the core shaft. The ejection assembly and the support assembly respectively apply extrusion pressure to the two side surfaces of the ring blank, thereby preventing the ring from flashing and ensuring the flatness of the ring.

[0010] The ejector assembly includes an ejector oil cylinder, a guide shaft, a sleeve, an ejector rod, an ejector frame, and an ejector roller; the ejector frame is fixedly connected to the press assembly and is arranged at the lower side of the press assembly; three lateral moving channels are arranged on the ejector frame, and a sleeve is arranged in each lateral moving channel;

[0011] The two side surfaces of the ejector roller are parallel to the vertical plane, one end of the ejector rod is fixedly connected to the middle position of one side of the ejector roller, the other end of the ejector rod passes through the lateral moving channel in the middle of the ejector frame and is connected to the ejector oil cylinder, and the other side of the ejector roller is used to apply extrusion force to the side of the ring blank; the ejector oil cylinder is fixed on the ejector frame; two guide shafts are provided, fixedly connected on one side of the ejector roller, the two guide shafts are symmetrically arranged up and down relative to the ejector rod, and the two guide shafts penetrate into the lateral moving channels on the upper and lower sides;

[0012] The support assembly includes a support structure, a mobile structure and a lifting cylinder. The mobile structure includes a mobile cylinder and a mobile track. The bottom of the lifting cylinder is slidably connected to the mobile track. The support structure is arranged on the cylinder rod of the lifting cylinder. The lifting cylinder controls the rise and fall of the support structure. The cylinder rod of the mobile cylinder is connected to the lifting cylinder. Driven by the mobile cylinder, the lifting cylinder slides on the mobile track.

[0013] The support structure includes a support roller, a support frame, a support cylinder, a support guide shaft and a support top rod; the bottom of the support frame is arranged on the cylinder rod of the lifting cylinder, and the support frame is transversely provided with three horizontal movement channels;

[0014] The two side surfaces of the support roller are parallel to the vertical plane; one end of the support push rod is fixedly connected to the middle position of one side of the support roller, and the other end of the support push rod passes through the horizontal moving channel in the middle of the support frame and is connected to the support cylinder; the other side of the support roller is used to provide supporting force to the other side of the ring blank; the support cylinder is fixed on one side of the support frame; two support guide shafts are arranged, fixedly connected on one side of the support roller, and the two support guide shafts are symmetrically arranged up and down relative to the support push rod; the two support guide shafts penetrate into the horizontal moving channels on the upper and lower sides.

[0015] Preferably, the side shape of the ejection roller is one of circular, rectangular and elliptical.

[0016] Preferably, the side shape of the supporting roller is one of circular, rectangular and elliptical.

[0017] Preferably, the ejection assembly further comprises a guide copper sleeve, which is arranged at the ends of the upper and lower lateral movement channels, and protects the guide shaft and the lateral movement channel during the movement of the guide shaft in the lateral movement channel, thereby reducing wear and extending service life.

[0018] Preferably, the ejection assembly further comprises a fixed round nut, the diameter of the connection between the guide shaft and the ejection roller is smaller than that of other parts of the guide shaft, the fixed round nut is sleeved on the small diameter section of the guide shaft, the side of the fixed round nut is in contact with the ejection roller, the position of the fixed round nut is fixed, and the outer diameter of the fixed round nut is larger than the inner diameter of the lateral moving channel, so that the ejection roller and the ejection frame will not be in direct contact, collision is avoided during the movement of the ejection roller, and various components are protected.

[0019] Preferably, the support assembly also includes a guide copper sleeve, which is arranged at the ends of the upper and lower horizontal moving channels, and supports the guide shaft and the horizontal moving channel to protect the guide shaft and the horizontal moving channel during the movement of the guide shaft in the horizontal moving channel, thereby reducing wear and extending the service life.

[0020] Preferably, the support assembly also includes a fixed round nut, the diameter of the connection between the support guide shaft and the support roller is smaller than other parts of the support guide shaft, the fixed round nut is sleeved on the small diameter section of the support guide shaft, the side of the fixed round nut is in contact with the support roller, the position of the fixed round nut is fixed, and the outer diameter of the fixed round nut is larger than the inner diameter of the moving channel, so that the support roller and the ejector frame will not be in direct contact, collision is avoided during the movement of the support roller, and various components are protected.

[0021] Specifically, the ring blank is first hung on the mandrel. Since the diameter of the front end of the mandrel is larger than that of the rear end, the lifting cylinder is required to first drive the support structure downward so that the upper structure of the support structure is lower than the front end of the mandrel. Then the moving cylinder drives the lifting cylinder to drive the entire support structure to approach the ring blank. When it is about to contact, the moving cylinder stops moving.

[0022] Then the support cylinder drives the support roller to approach the ring blank until the support roller contacts the other side of the ring blank, and then the lifting cylinder extends the cylinder rod, so that the support assembly moves upward as a whole, approaches the mandrel but does not contact the mandrel, and provides support to the side of the ring blank to the greatest extent;

[0023] Then the ejector cylinder drives the ejector roller to approach the ring blank until the ejector roller is in close contact with the side of the ring blank;

[0024] Then the ring rolling machine starts to operate, the pressure shaft moves down until it is close to the ring blank, the core shaft starts to rotate to drive the ring blank to rotate, and the pressure shaft continuously applies vertical pressure to the ring blank while the ring blank rotates. The inner and outer walls of the ring blank are continuously squeezed during the rotation process, so that the difference between the inner diameter and the outer diameter gradually decreases and the thickness gradually increases. During this process, the length of the cylinder rod of the supporting cylinder remains unchanged, and the cylinder rod of the ejecting cylinder shortens as the thickness of the ring blank increases, but lateral pressure is always applied to the ring blank, so that the side of the ring blank always remains parallel to the vertical plane, ensuring the flatness of the side of the final ring and preventing ring flash.

[0025] During the operation of the ring rolling machine, the guide shaft always remains in the lateral moving channel and will not leave the lateral moving channel to ensure the normal operation of the ring rolling machine next time. The length of the guide shaft can be determined according to the length of the core shaft and the ejector frame, which can be done by technical personnel in this field.

[0026] The beneficial effects of the utility model are:

[0027] The utility model arranges an ejection assembly and a support assembly below the mandrel and applies lateral force to the two side surfaces of the ring blank at the same time, so that the left and right side surfaces of the ring blank are always kept parallel to the vertical plane, thereby preventing the ring from flashing and ensuring the flatness of the side surface of the final ring.

[0028] By adopting the above scheme, the utility model can prevent the ring from flashing, ensure the flatness of the side surface of the ring, is suitable for ring blanks with different diameters and thicknesses, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0031] Figure 2 It is a schematic diagram of the structure of the ejector assembly.

[0032] Figure 3 It is a structural diagram of the support assembly.

[0033] In the figure, 1-transmission assembly, 2-press assembly, 3-ejection assembly, 4-support assembly;

[0034] 21- mandrel, 22- press shaft;

[0035] 31- ejector cylinder, 32- guide shaft, 33- guide copper sleeve, 34- shaft sleeve, 35- ejector rod, 36- ejector frame, 37- fixed round nut, 38- ejector roller;

[0036] 41-support roller, 42-support frame, 43-support cylinder, 44-support guide shaft, 45-movable rail, 46-movable cylinder, 47-support push rod, 48-lifting cylinder. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the 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.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] like Figure 1 As shown, a ring rolling machine for preventing ring flash includes a transmission assembly 1, a press assembly 2, an ejection assembly 3 and a support assembly 4;

[0042] The transmission assembly 1 provides power to the press assembly 2, and the press assembly 2 completes movement and rotation operations driven by the transmission assembly 1; the press assembly 2 includes a core shaft 21 and a pressing shaft 22, and the core shaft 21 is below the pressing shaft 22; the ejector assembly 3 is arranged below the press assembly 2, and the support assembly 4 is arranged on the opposite side of the ejector assembly 3, and the ring blank is hung on the core shaft 21. The ejector assembly 3 and the support assembly 4 respectively apply extrusion pressure to the two side surfaces of the ring blank to prevent the ring from flashing while ensuring the flatness of the ring.

[0043] The ejector assembly 3 includes an ejector oil cylinder 31, a guide shaft 32, a sleeve 34, a push rod 35, an ejector frame 36, and an ejector roller 38; the ejector frame 36 is fixedly connected to the press assembly 2 and is arranged at the lower side of the press assembly 2; three lateral moving channels are arranged on the ejector frame 36, and a sleeve 34 is arranged in each lateral moving channel;

[0044] The two side surfaces of the ejector roller 38 are parallel to the vertical plane, one end of the ejector rod 35 is fixedly connected to the middle position of one side of the ejector roller 38, the other end of the ejector rod 35 passes through the lateral moving channel in the middle of the ejector frame 36 and is connected to the ejector oil cylinder 31, and the other side of the ejector roller 38 is used to apply extrusion force to the side of the ring blank; the ejector oil cylinder 31 is fixed on the ejector frame 36; two guide shafts 32 are provided, fixedly connected to one side of the ejector roller 38, and the two guide shafts 32 are symmetrically arranged with respect to the ejector rod 35, and the two guide shafts 32 penetrate into the lateral moving channels on the upper and lower sides;

[0045] The support assembly 4 includes a support structure, a mobile structure and a lifting cylinder 48. The mobile structure includes a mobile cylinder 46 and a mobile track 45. The bottom of the lifting cylinder 48 is slidably connected to the mobile track 45. The support structure is arranged on the cylinder rod of the lifting cylinder 48. The lifting cylinder 48 controls the rise and fall of the support structure. The cylinder rod of the mobile cylinder 46 is connected to the lifting cylinder 48. Driven by the mobile cylinder 46, the lifting cylinder 48 slides on the mobile track 45.

[0046] The support structure includes a support roller 41, a support frame 42, a support cylinder 43, a support guide shaft 44 and a support top rod 47; the bottom of the support frame 42 is arranged on the cylinder rod of the lifting cylinder 48, and the support frame 42 is laterally provided with three horizontal moving channels;

[0047] The two side surfaces of the support roller 41 are parallel to the vertical plane; one end of the support push rod 47 is fixedly connected to the middle position of one side of the support roller 41, and the other end of the support push rod 47 passes through the horizontal moving channel in the middle of the support frame 42 and is connected to the support cylinder 43; the other side of the support roller 41 is used to provide supporting force to the other side of the ring blank; the support cylinder 43 is fixed on one side of the support frame 42; two support guide shafts 44 are arranged, fixedly connected on one side of the support roller 41, and the two support guide shafts 44 are symmetrically arranged up and down relative to the support push rod 47; the two support guide shafts 44 pass through the upper and lower horizontal moving channels.

[0048] The ejection assembly 3 also includes a guide copper sleeve 33, which is arranged at the ends of the upper and lower lateral movement channels. The guide copper sleeve 33 protects the guide shaft 32 and the lateral movement channel during the movement of the guide shaft 32 in the lateral movement channel, reduces wear and prolongs the service life.

[0049] The ejection assembly 3 also includes a fixed round nut 37. The diameter of the connection between the guide shaft 32 and the ejection roller 38 is smaller than the other parts of the guide shaft 32. The fixed round nut 37 is sleeved on the small diameter section of the guide shaft 32. The side of the fixed round nut 37 is in contact with the ejection roller 38. The position of the fixed round nut 37 is fixed. The outer diameter of the fixed round nut 37 is larger than the inner diameter of the lateral moving channel, so that the ejection roller 38 will not directly contact the ejection frame 36, and collision is avoided during the movement of the ejection roller 38 to protect various components.

[0050] Specifically, the ring blank is first hung on the mandrel 21. Since the front end diameter of the mandrel 21 is larger than the rear end, the lifting cylinder 48 is required to first drive the support structure downward so that the upper structure of the support structure is lower than the front end of the mandrel. Then the moving cylinder 46 drives the lifting cylinder 48 to drive the entire support structure to approach the ring blank. When the moving cylinder 46 is about to contact the ring blank, it stops.

[0051] Then the support cylinder 43 drives the support roller 41 to approach the ring blank until the support roller 41 contacts the other side of the ring blank, and then the lifting cylinder 48 extends the cylinder rod, so that the support assembly 4 moves upward as a whole, approaches the mandrel but does not contact the mandrel, and provides support to the side of the ring blank to the greatest extent;

[0052] Then the ejector cylinder 31 drives the ejector roller 38 to approach the ring blank until the ejector roller 38 is in close contact with the side surface of the ring blank;

[0053] Then the ring rolling machine starts to operate, the pressing shaft 22 moves down until it is close to the ring blank, the core shaft 21 starts to rotate to drive the ring blank to rotate, and the pressing shaft 22 continuously applies vertical pressure to the ring blank while the ring blank rotates. The inner wall and the outer wall of the ring blank are continuously squeezed during the rotation process, so that the difference between the inner diameter and the outer diameter gradually decreases, and the thickness gradually increases. During this process, the cylinder rod length of the supporting cylinder 43 remains unchanged, and the cylinder rod of the ejecting cylinder 31 shortens as the thickness of the ring blank increases, but always applies lateral pressure to the ring blank, so that the side surface of the ring blank always remains parallel to the vertical plane, ensuring the flatness of the side surface of the final ring and preventing the ring from flashing.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ring rolling machine for preventing ring flash, comprising a transmission assembly and a press assembly, wherein the transmission assembly provides power to the press assembly, and the press assembly completes movement and rotation operations under the drive of the transmission assembly; the press assembly comprises a mandrel and a press shaft, and the mandrel is below the press shaft; characterized in that: It also includes an ejector assembly and a support assembly, wherein the ejector assembly is arranged below the press assembly, and the support assembly is arranged on the opposite side of the ejector assembly; the ejector assembly includes an ejector oil cylinder, a guide shaft, a bushing, an ejector rod, an ejector frame and an ejector roller; the ejector frame is fixedly connected to the press assembly; three transverse moving channels are arranged on the ejector frame, and bushings are arranged in the transverse moving channels; the two side surfaces of the ejector roller are parallel to the vertical plane, one end of the ejector rod is fixedly connected to the middle position of one side of the ejector roller, and the other end of the ejector rod passes through the transverse moving channel in the middle of the ejector frame and is connected to the ejector oil cylinder; the ejector oil cylinder is fixed on the ejector frame; two guide shafts are arranged, fixedly connected on one side of the ejector roller, and the two guide shafts are symmetrically arranged up and down relative to the ejector rod, and the two guide shafts penetrate into the transverse moving channels on the upper side and the lower side; The support assembly comprises a supporting structure, a moving structure and a lifting cylinder, the moving structure comprises a moving cylinder and a moving rail, the bottom of the lifting cylinder is slidably connected to the moving rail, the supporting structure is arranged on the cylinder rod of the lifting cylinder, and the cylinder rod of the moving cylinder is connected to the lifting cylinder; the supporting structure comprises a supporting roller, a supporting frame, a supporting cylinder, a supporting guide shaft and a supporting top rod; the bottom of the supporting frame is arranged on the cylinder rod of the lifting cylinder, and the supporting frame is laterally provided with three horizontal moving channels; the two side surfaces of the supporting roller are parallel to the vertical plane; one end of the supporting top rod is fixedly connected to the middle position of one side of the supporting roller, and the other end of the supporting top rod passes through the horizontal moving channel in the middle of the supporting frame and is connected to the supporting cylinder; the supporting cylinder is fixed on one side of the supporting frame; two supporting guide shafts are arranged, fixedly connected on one side of the supporting roller, and the two supporting guide shafts are symmetrically arranged up and down relative to the supporting top rod; the two supporting guide shafts penetrate into the horizontal moving channels on the upper and lower sides.

2. A ring rolling machine for preventing ring flash according to claim 1, characterized in that: The side shape of the ejection roller is one of circular, rectangular and elliptical.

3. A ring rolling machine for preventing ring flash according to claim 1, characterized in that: The side shape of the supporting roller is one of circular, rectangular and elliptical.

4. A ring rolling machine for preventing ring flash according to claim 1, characterized in that: The ejection assembly further comprises a guide copper sleeve, which is arranged at the ends of the lateral movement channels on the upper side and the lower side.

5. The ring rolling machine for preventing ring flash according to claim 1, characterized in that: The ejection assembly also includes a fixed round nut. The diameter of the connection between the guide shaft and the ejection roller is smaller than that of other parts of the guide shaft. The fixed round nut is sleeved on the small diameter section of the guide shaft. The side of the fixed round nut is in contact with the ejection roller. The position of the fixed round nut is fixed, and the outer diameter of the fixed round nut is larger than the inner diameter of the lateral movement channel.

6. A ring rolling machine for preventing ring flash according to claim 1, characterized in that: The support assembly also includes a guide copper sleeve, which is arranged at the ends of the horizontal moving channels on the upper side and the lower side.

7. A ring rolling machine for preventing ring flash according to claim 1, characterized in that: The support assembly also includes a fixed round nut, the diameter of the connection between the support guide shaft and the support roller is smaller than the other parts of the support guide shaft, the fixed round nut is sleeved on the small diameter section of the support guide shaft, the side of the fixed round nut is in contact with the support roller, the position of the fixed round nut is fixed, and the outer diameter of the fixed round nut is larger than the inner diameter of the moving channel.

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