Sliding structure of main ring rolling roller of ring rolling mill

Abstract

The utility model discloses a sliding structure of a main ring rolling roller of a ring rolling mill. According to the device, main sliding ways are arranged on the two sides of the interior of an integral rack, and more than two first protruding sliding bodies are arranged on the main sliding way on each side; the two sides of the main sliding block are in sliding connection with the main sliding ways correspondingly. The side face guide sliding way and the main sliding way are in a right-angle state. The side face guide sliding way is provided with a second protruding sliding body. The side sliding block is in threaded connection with the main sliding block, and the side sliding block is in sliding connection with the side guide sliding way; the main sliding way and the main sliding block are matched to limit the freedom degree of the main sliding block in the x direction, and the side face guiding sliding way and the side face sliding block are matched to limit the freedom degree of the main sliding block in the y direction. The main grinding ring roller can move up and down in a more stable mode, the machining quality of ring pieces is guaranteed, meanwhile, abrasion to parts is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of forging equipment, in particular to a sliding structure of a main ring rolling roller of a ring rolling machine. Background Art

[0002] Ring rolling machine is a kind of rotary forging equipment with a long history. 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. The former is suitable for the manufacture of medium and small rings, and the latter is suitable for the manufacture of large and extra-large rings. They have been 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, and aerospace equipment for decades.

[0003] The existing vertical ring rolling machine includes main structures such as a bed, a main ring rolling roller for ring rolling processing, and a core roller for mounting the ring blank to be processed. The sliding seat of the main ring rolling roller is slidably connected to the body through a guide column. This method of using multiple guide columns to realize the up and down sliding of the main ring rolling roller has very high requirements on the position and strength stiffness of each guide column. The guide column is also subject to great wear and tear and has a short service life. If one of the guide columns is slightly tilted or displaced, the main ring rolling roller will be skewed, and the quality of the final processed ring will be reduced.

[0004] In the existing technical solutions, such as the flange reamer ring rolling device with authorization announcement number CN 205200423 U, the power shaft is connected to the guide column through a sliding sleeve, the guide column is arranged between the upper plate and the bottom plate, and the cylinder can drive the power shaft to move up and down along the guide column. The power shaft, i.e., the main ring rolling roller, is moved up and down by multiple guide columns. If one of the guide columns is slightly tilted or displaced, the power shaft will be skewed, and the quality of the final processed ring will be reduced; the position requirements and strength and stiffness requirements for each guide column are very high, the guide column is also greatly worn, and the service life is short.

[0005] In order to solve the above technical problems, the utility model proposes a sliding structure of a main ring rolling roller of a ring rolling machine. Summary of the invention

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and propose a sliding structure for the main ring rolling roller of a ring rolling machine, which can realize the up and down movement of the main ring rolling roller in a more stable manner, ensure the processing quality of the rings, reduce the wear on components, and extend the service life.

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

[0008] A sliding structure of a main ring rolling roller of a ring rolling machine, comprising a main slider, a main slideway, a side slider and a side guide slideway, wherein one end of the main ring rolling roller is a working end for rolling the ring, and the other end is a supporting end;

[0009] The supporting end of the main rolling ring roller is arranged in the main slider through multiple supporting groups, and the supporting group includes a rolling bearing and a bearing seat, and the bearing seat is connected to the main slider. The supporting end of the main rolling ring roller is rotatably connected with the main slider through the rolling bearing in the bearing seat;

[0010] The main slides are arranged on both sides of the integral frame, and at least two first protruding slides are arranged on each side of the main slide; the two sides of the main slide block are respectively connected to the main slides in a sliding manner;

[0011] The side guide slide is at a right angle to the main slide, the side guide slide is provided with a second protruding slide body, the side slider is threadedly connected to the main slider; the side slider is slidably connected to the side guide slide; the cooperation between the main slide and the main slider limits the freedom of the main slider in the x direction, and the cooperation between the side guide slide and the side slider limits the freedom of the main slider in the y direction.

[0012] Preferably, two side guide slides are provided to form a U-shaped slide with the main slide, and two side sliders are provided to be threadedly connected to both sides of the main slider to better restrict the main slider and further ensure that the main slider always maintains vertical movement without deviation.

[0013] Preferably, vertical slide grooves are respectively provided on the three sides of the first protruding slide body, and a plurality of main pulley groups are arranged in the slide groove on the front side, and the central axes of the main pulley groups are kept in the same vertical plane; a plurality of auxiliary pulley groups are arranged in the slide grooves on the left and right sides, and the axes of the auxiliary pulley groups are kept in the same vertical plane; the main pulley group and the auxiliary pulley group have the same structure, and both include a fixed shaft, a rolling bearing and a pulley, the two ends of the fixed shaft are detachably connected in the slide groove, the rolling bearing is sleeved in the middle position of the fixed shaft, and the pulley is sleeved outside the rolling bearing, so that the pulley is rotatably connected to the fixed shaft; the pulley part is from the slide The first protruding slider protrudes in the groove, and the distance between the plane where the vertical tangent of the outer side of the protruding part of the pulley lies and the outer wall of the first protruding slider is 0.1~0.3 of the pulley diameter, so that the main slider only contacts the pulley and does not directly contact other parts of the first protruding slider. The fixed shaft is fixed relative to the slide groove, and the pulley is rotatable relative to the fixed shaft. When the main slider slides relative to the main slide, the pulley rotates driven by the main slider, but the fixed shaft is stationary, thereby protecting the main part of the main slide, reducing wear and extending the service life. On the other hand, it can facilitate the up and down sliding of the main slider relative to the main slide and reduce sliding resistance.

[0014] The connection method between the fixed shaft, the rolling bearing and the pulley mentioned above belongs to the prior art and is well known to those skilled in the art.

[0015] Preferably, installation channels are symmetrically opened on both sides of the slide groove, and the installation channels include a corner channel, a wrench channel and a moving channel. The corner channel includes an insertion channel and a positioning channel that are connected, the insertion channel is arranged along the y direction, and the positioning channel is arranged along the x direction; the moving channel is arranged along the z direction and is placed above the positioning channel, and the moving channel and the positioning channel axis are colinear and connected; the wrench channel is arranged along the x direction and is connected to the moving channel;

[0016] A positioning device is arranged in the slide slot, and the positioning device comprises two groups of symmetrically arranged positioning structures, the positioning structure comprises a moving block, a spring and a wrench, the positioning device is arranged in the moving channel, one end of the spring is fixedly connected to the top of the moving channel, and the other end of the spring is connected to the top of the moving block, the wrench is arranged on the side of the moving block and extends out from the wrench channel, and the wrenches of the two groups of positioning structures are fixedly connected to form a combined wrench;

[0017] When the spring is at a normal length, the moving block is at its lowest point, and the bottom of the moving block and the positioning channel together form a placement space for the fixed shaft, limiting the freedom of the fixed shaft. At this time, the combined wrench and the pulley are separated by a certain distance, and the two do not affect each other; when the main pulley block or the auxiliary pulley block needs to be replaced, you only need to hold the combined wrench and move it up, the spring is compressed, and the moving block is driven to move up, so that the corner channel is unblocked. At this time, the fixed shaft recovers to a free state and can be moved and taken out along the corner channel, and then a new main pulley block or auxiliary pulley block is taken and enters the positioning channel along the corner channel. At this time, slowly release the combined wrench, and under the action of the restoring force of the spring, the moving block moves down, forming a limiting force on the fixed shaft, limiting the free state of the fixed shaft, and thus completing the replacement and installation of the main pulley block or the auxiliary pulley block.

[0018] Preferably, a semicircular groove is provided at the bottom of the movable block, and a semicircular surface is provided at the inner bottom of the positioning channel. The semicircular surface and the semicircular groove can be combined into a circular installation groove, that is, a placement space for the fixed shaft, which matches the shape and size of the fixed shaft to facilitate better positioning of the fixed shaft.

[0019] Preferably, the semicircular arc groove is provided with a sawtooth anti-skid groove, and the semicircular arc surface is provided with a sawtooth anti-skid groove, so as to better limit the degree of freedom of the fixed axis.

[0020] Specifically, the main slider moves up and down driven by the hydraulic cylinder. During the movement, the main slider cooperates with the main slide, and the side slider cooperates with the side guide slide to limit the x and y upward degrees of freedom of the main slider, so that the main slider keeps moving up and down to avoid deviation.

[0021] The beneficial effects of the utility model are:

[0022] The utility model forms a sliding structure of the main rolling ring roller through the main slider, the main slideway, the side slider and the side guide slideway, limits the freedom of the main slider in the x and y directions, avoids the deviation of the main slider, realizes the up and down movement of the main rolling ring roller in a more stable manner, ensures the processing quality of the ring, reduces the wear of the parts and extends the service life.

[0023] The utility model arranges partially protruding auxiliary pulley groups and main pulley groups on the first protruding sliding body of the main slide, so that the main slider only contacts the pulley and does not directly contact other parts of the first protruding sliding body, thereby protecting the main body of the main slide, reducing wear and extending the service life, and on the other hand, it can facilitate the up and down sliding of the main slider relative to the main slide.

[0024] The utility model arranges an installation channel and a positioner in the slide groove of the first protruding slide body, so that the driving shaft is detachably connected to the first protruding slide body, which is convenient for installation and disassembly and forms a stable restriction on the fixed shaft.

[0025] By adopting the above scheme, the utility model can realize the up and down movement of the main ring roller in a more stable manner, thereby ensuring the processing quality of the ring, while reducing the wear on the parts and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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.

[0027] Figure 1 It is a schematic diagram of the side structure of the first embodiment.

[0028] Figure 2 2 is a schematic diagram of the top structure of the first embodiment.

[0029] Figure 3 2 is a schematic diagram of the top structure of the second embodiment.

[0030] Figure 4 It is a schematic diagram of the overall structure of the third embodiment.

[0031] Figure 5 2 is a schematic diagram of the top structure of the third embodiment.

[0032] Figure 6 It is a schematic diagram of the installation channel structure in the third embodiment.

[0033] Figure 7 It is a schematic diagram of the installation structure of the auxiliary pulley block in the third embodiment.

[0034] Figure 8 yes Figure 6 Cross-section view at AA in the middle.

[0035] Fig. 9 yes Figure 7 Cross-section view at the middle BB.

[0036] In the figure, 1-side slider, 2-side guide slide, 3-main slide, 4-main slider, 5-integral frame, 6-main grinding ring roller, 7-support group, 8-positioner, 31-auxiliary pulley group, 32-main pulley group; 311-fixed shaft, 312-rolling bearing, 313-pulley, 314-plane where the vertical tangent is located, 315-outer wall of the first protruding slide body; 331-extending channel, 332-positioning channel; 81-movable block, 82-spring, 83-wrench. Implementation

[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] First embodiment:

[0042] like Figure 1~2 As shown, a sliding structure of a main ring rolling roller of a ring rolling machine includes a main slider 4, a main slideway 3, a side slider 1 and a side guide slideway 2. One end of the main ring rolling roller 6 is a working end for rolling the ring, and the other end is a supporting end;

[0043] The supporting end of the main rolling ring roller 6 is arranged in the main slider 4 through multiple supporting groups 7. The supporting group 7 includes a rolling bearing and a bearing seat. The bearing seat is connected to the main slider 4. The supporting end of the main rolling ring roller 6 is rotatably connected to the main slider 4 through the rolling bearing in the bearing seat.

[0044] The main slideway 3 is arranged on both sides of the integral frame 5, and each side of the main slideway 3 is provided with more than two first protruding sliding bodies; the two sides of the main sliding block 4 are respectively slidably connected to the main slideway 3;

[0045] The side guide slide 2 is at a right angle to the main slide 3, the side guide slide 2 is provided with a second protruding slide body, the side slider 1 is threadedly connected to the main slider 4; the side slider 1 is slidably connected to the side guide slide 2; the cooperation between the main slide 3 and the main slider 4 limits the degree of freedom of the main slider 4 in the x direction, and the cooperation between the side guide slide 2 and the side slider 1 limits the degree of freedom of the main slider 4 in the y direction.

[0046] Second embodiment:

[0047] like Figure 3 As shown, a sliding structure of a main ring rolling roller of a ring rolling machine includes a main slider 4, a main slideway 3, a side slider 1 and a side guide slideway 2. One end of the main ring rolling roller 6 is a working end for rolling the ring, and the other end is a supporting end;

[0048] The supporting end of the main rolling ring roller 6 is arranged in the main slider 4 through multiple supporting groups 7. The supporting group 7 includes a rolling bearing and a bearing seat. The bearing seat is connected to the main slider 4. The supporting end of the main rolling ring roller 6 is rotatably connected to the main slider 4 through the rolling bearing in the bearing seat.

[0049] The main slideway 3 is arranged on both sides of the integral frame 5, and each side of the main slideway 3 is provided with more than two first protruding sliding bodies; the two sides of the main sliding block 4 are respectively slidably connected to the main slideway 3;

[0050] The side guide slide 2 is at a right angle to the main slide 3, the side guide slide 2 is provided with a second protruding slide body, the side slider 1 is threadedly connected to the main slider 4; the side slider 1 is slidably connected to the side guide slide 2; the cooperation between the main slide 3 and the main slider 4 limits the degree of freedom of the main slider 4 in the x direction, and the cooperation between the side guide slide 2 and the side slider 1 limits the degree of freedom of the main slider 4 in the y direction.

[0051] The side guide slides 2 are provided with two tracks, forming a U-shaped slide with the main slide 3, and the side sliders 1 are provided with two tracks, which are threadedly connected to the two sides of the main slider 4, so as to better limit the main slider and further ensure that the main slider always maintains vertical movement without deviation.

[0052] Third embodiment:

[0053] like Figures 4 to 8 As shown, a sliding structure of a main ring rolling roller of a ring rolling machine includes a main slider 4, a main slideway 3, a side slider 1 and a side guide slideway 2. One end of the main ring rolling roller 6 is a working end for rolling the ring, and the other end is a supporting end;

[0054] The supporting end of the main rolling ring roller 6 is arranged in the main slider 4 through multiple supporting groups 7. The supporting group 7 includes a rolling bearing and a bearing seat. The bearing seat is connected to the main slider 4. The supporting end of the main rolling ring roller 6 is rotatably connected to the main slider 4 through the rolling bearing in the bearing seat.

[0055] The main slideway 3 is arranged on both sides of the integral frame 5, and each side of the main slideway 3 is provided with more than two first protruding sliding bodies; the two sides of the main sliding block 4 are respectively slidably connected to the main slideway 3;

[0056] The side guide slide 2 is at a right angle to the main slide 3, the side guide slide 2 is provided with a second protruding slide body, the side slider 1 is threadedly connected to the main slider 4; the side slider 1 is slidably connected to the side guide slide 2; the cooperation between the main slide 3 and the main slider 4 limits the degree of freedom of the main slider 4 in the x direction, and the cooperation between the side guide slide 2 and the side slider 1 limits the degree of freedom of the main slider 4 in the y direction.

[0057] like Figure 4 and 5 As shown, vertical slide grooves are respectively provided on the three sides of the first protruding slide body, a plurality of main pulley groups 32 are arranged in the slide groove on the front side, and a plurality of auxiliary pulley groups 31 are arranged in the slide grooves on the left and right sides. The main pulley group 32 and the auxiliary pulley group 31 have the same structure, and both include a fixed shaft 311, a rolling bearing 312 and a pulley 313, as shown in FIG. Fig. 9 As shown; both ends of the fixed shaft 311 are detachably connected in the slide groove, the rolling bearing 312 is set in the middle position of the fixed shaft 311, and the pulley 313 is set on the outer wall of the rolling bearing 312, so that the pulley 313 is rotatably connected to the fixed shaft 311; as Figure 5As shown, the pulley 313 partially protrudes from the slide groove, and the distance between the plane 314 where the vertical tangent of the outer side of the protruding part of the pulley 313 is located and the outer wall 315 of the first protruding slide body is 0.1~0.3 of the diameter of the pulley 313, so that the main slider 4 only contacts with the pulley 414 and does not directly contact with other parts of the first protruding slide body. The fixed shaft 311 is fixed relative to the slide groove, and the pulley 313 is rotatable relative to the fixed shaft 311. When the main slider 4 slides relative to the main slide 3, the pulley 313 rotates driven by the main slider 4, but the fixed shaft 311 is stationary, thereby protecting the main part of the main slide 3, reducing wear and extending the service life, and on the other hand, it can facilitate the main slider 4 to slide up and down relative to the main slide 3.

[0058] like Figure 6 and 8 As shown, installation channels are symmetrically opened on both sides of the slide groove, and the installation channels include a corner channel 33, a wrench channel 34 and a movable channel 35. The corner channel 33 includes an insertion channel 331 and a positioning channel 332 that are connected to each other. The insertion channel 331 is arranged along the y direction, and the positioning channel 332 is arranged along the x direction; the movable channel 35 is arranged along the z direction and is placed above the positioning channel 332. The axes of the movable channel 35 and the positioning channel 332 are colinear and connected; the wrench channel 34 is arranged along the x direction and is connected to the movable channel 35.

[0059] like Figure 7 and 9 As shown, a stopper 8 is arranged in the slide slot, and the stopper 8 includes two groups of symmetrically arranged stopper structures, the stopper structures including a moving stopper 81, a spring 82 and a wrench 83, the stopper 3 is placed in the moving channel 35, one end of the spring 82 is fixedly connected to the top of the moving channel 35, and the other end of the spring 82 is connected to the top of the moving stopper 81, the wrench 83 is arranged on the side of the moving stopper 81, and extends out from the wrench channel 34, and the two groups of wrenches 83 of the stopper structures are fixedly connected to form a combined wrench;

[0060] When the spring 82 is at a normal length, the movable block 81 is at its lowest point, and the bottom of the movable block 81 and the positioning channel jointly form a placement space for the fixed shaft 311, limiting the freedom of the fixed shaft 311. At this time, the combined wrench and the pulley 313 are separated by a certain distance, and the two do not affect each other; when the main pulley block 32 or the auxiliary pulley block 31 needs to be replaced, it is only necessary to hold the combined wrench upward, the spring 82 is compressed, and the movable block 81 moves upward, so that the corner channel 33 is unblocked. At this time, the fixed shaft 311 recovers its free state and can be moved along the corner channel 33 for removal, and then a new main pulley block 32 or auxiliary pulley block 31 is taken out and enters the positioning channel along the corner channel 33. At this time, the combined wrench is slowly released, and under the action of the restoring force of the spring 82, the movable block 81 moves downward, forming a limiting force on the fixed shaft 311, limiting the free state of the fixed shaft 311, and thus completing the replacement and installation of the main pulley block 32 or the auxiliary pulley block 31.

[0061] A semicircular groove is provided at the bottom of the movable block 81, and a semicircular surface is provided at the inner bottom of the positioning channel. The semicircular surface and the semicircular groove can be combined into a circular installation groove, that is, a placement space for the fixed shaft, which matches the shape and size of the fixed shaft 311 to facilitate better positioning of the fixed shaft 311.

[0062] The semicircular arc groove is provided with a sawtooth anti-skid groove, and the semicircular arc surface is provided with a sawtooth anti-skid groove, so as to better limit the degree of freedom of the fixed shaft 311.

[0063] 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 sliding structure of a main ring rolling roller of a ring rolling machine, wherein one end of the main ring rolling roller is a working end for rolling the ring, and the other end is a supporting end, the supporting end of the main ring rolling roller is arranged in a main slider through multiple supporting groups, the supporting group includes a rolling bearing and a bearing seat, and the supporting end of the main ring rolling roller is rotatably connected with the main slider through the rolling bearing in the bearing seat; characterized in that: It also includes a main slider, a main slide, a side slider and a side guide slide. The main slide is arranged on both sides of the overall frame, and more than two first protruding slides are arranged on each side of the main slide; the two sides of the main slider are respectively slidably connected with the main slide; the side guide slide is at a right angle to the main slide; the side guide slide is provided with a second protruding slide; the side slider is threadedly connected to the main slider, and the side slider is slidably connected to the side guide slide; the cooperation between the main slide and the main slider limits the degree of freedom of the main slider in the x direction, and the cooperation between the side guide slide and the side slider limits the degree of freedom of the main slider in the y direction.

2. The sliding structure of the main ring rolling roller of the ring rolling machine according to claim 1 is characterized in that: The side guide slides are provided with two tracks, forming a U-shaped slide with the main slide, and the side sliding blocks are provided with two tracks, which are threadedly connected with the two sides of the main sliding block.

3. The sliding structure of the main ring rolling roller of the ring rolling machine according to claim 1 is characterized in that: Vertical slide grooves are respectively provided on the three side surfaces of the first protruding slide body, and a plurality of main pulley groups are arranged in the slide groove on the front side, and the central axes of the main pulley groups are kept in the same vertical plane; a plurality of auxiliary pulley groups are arranged in the slide grooves on the left and right sides, and the axes of the auxiliary pulley groups are kept in the same vertical plane; the main pulley group and the auxiliary pulley group have the same structure, and both include a fixed shaft, a rolling bearing and a pulley, and the two ends of the fixed shaft are detachably connected in the slide groove, the rolling bearing is mounted in the middle position of the fixed shaft, and the pulley is mounted outside the rolling bearing, so that the pulley is rotatably connected to the fixed shaft; the pulley part protrudes from the slide groove, and the distance between the plane where the vertical tangent of the outer side of the protruding part of the pulley is located and the outer wall of the first protruding slide body is 0.1~0.3 of the pulley diameter.

4. The sliding structure of the main ring rolling roller of the ring rolling machine according to claim 3 is characterized in that: The two sides of the slide are symmetrically provided with installation channels, the installation channels include a corner channel, a wrench channel and a moving channel, the corner channel includes an extending channel and a positioning channel that are connected, the extending channel is arranged along the y direction, and the positioning channel is arranged along the x direction; the moving channel is arranged along the z direction, placed above the positioning channel, and the moving channel is colinear with the positioning channel axis and is connected; the wrench channel is arranged along the x direction and is connected to the moving channel; a positioning device is arranged in the slide of the main slider, and the positioning device includes two groups of symmetrically arranged positioning structures, the positioning structure includes a moving card block, a spring and a wrench, the positioning device is placed in the moving channel, one end of the spring is fixedly connected to the top of the moving channel, and the other end of the spring is connected to the top of the moving card block, the wrench is arranged on the side of the moving card block and extends out of the wrench channel, and the wrenches of the two groups of positioning structures are fixedly connected to form a combined wrench; when the spring is at a normal length, the moving card block is at its lowest point, and the bottom of the moving card block and the positioning channel jointly form a placement space for the fixed axis, which limits the degree of freedom of the fixed axis, and the combined wrench is separated from the pulley by a certain distance.

5. The sliding structure of the main ring rolling roller of the ring rolling machine according to claim 4 is characterized in that: A semicircular groove is provided at the bottom of the movable block, and a semicircular surface is provided at the inner bottom of the positioning channel. The semicircular surface and the semicircular groove can be combined into a circular installation groove, that is, a placement space for the fixed shaft.

6. The sliding structure of the main ring rolling roller of the ring rolling machine according to claim 5 is characterized by: The semicircular arc groove is provided with a sawtooth anti-skid groove, and the semicircular arc surface is provided with a sawtooth anti-skid groove.

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