Improved centering shaft for tapered roller bearing inner ring superfinishing machine tool

Abstract

The utility model belongs to the technical field of centering shafts for tapered roller bearing inner ring superfinishing machine tools, and particularly relates to an improved centering shaft for a tapered roller bearing inner ring superfinishing machine tool, which comprises a connecting shaft, inner supporting plate grooves are formed in the outer wall of the connecting shaft, hollow grooves are formed in the inner walls of the inner supporting plate grooves, an adjusting screw rod is arranged in the connecting shaft, and the adjusting screw rod is connected with the connecting shaft. A rotating disc is fixedly connected to one end of the adjusting screw rod, a positioning ring is fixedly connected to the outer wall of the adjusting screw rod, moving rings are in threaded connection with the outer wall of the adjusting screw rod, rotating grooves are formed in the outer walls of the two moving rings correspondingly, connecting rods are movably connected to the inner walls of the multiple rotating grooves correspondingly, and inner supporting plates are arranged in the multiple inner supporting plate grooves correspondingly; the inner wall of the inner supporting plate is fixedly connected with two connecting blocks, and the other ends of the connecting rods are movably connected with the inner walls of the connecting blocks. Under the action of the inner supporting plate, the inner ring centering shaft can meet the machining requirements of inner rings of different models, the applicability is improved, the whole centering shaft does not need to be replaced, time is saved, and the machining efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of centering shafts for ultra-precision machine tools for inner rings of tapered roller bearings, specifically an improved centering shaft for ultra-precision machine tools for inner rings of tapered roller bearings. Background Technology

[0002] Tapered roller bearings are a type of separable bearing with tapered raceways on both the inner and outer rings and tapered rollers as rolling elements. They are widely used in automobiles, rolling mills, mining, metallurgy, and plastics machinery, and have a high load-carrying capacity, but their upper speed limit is relatively low.

[0003] Tapered roller bearings come in different models. When machining tapered roller bearings, the bearings need to be clamped and fixed before machining. When fixing different models of tapered roller bearings, the centering shaft for fixing the bearing needs to be replaced, which is difficult, time-consuming, labor-intensive, and increases costs. Summary of the Invention

[0004] The purpose of this invention is to provide an improved centering shaft for ultra-precision machine tools for the inner ring of tapered roller bearings, which can be applied to different models of tapered roller bearings, thus improving applicability.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An improved centering shaft for ultra-precision machine tools is provided for the inner ring of tapered roller bearings, comprising a connecting shaft. The outer wall of the connecting shaft has multiple inner support plate grooves, and the inner walls of each of the multiple inner support plate grooves have hollowed-out grooves. An adjusting screw is provided inside the connecting shaft. One end of the adjusting screw is fixedly connected to a turntable. A positioning ring is fixedly connected to the outer wall of the adjusting screw. Two movable rings are threadedly connected to the outer wall of the adjusting screw. The outer walls of both movable rings have multiple rotating grooves. A connecting rod is movably connected to the inner walls of each of the multiple rotating grooves. An inner support plate is provided inside each of the multiple inner support plate grooves. Two connecting blocks are fixedly connected to the inner walls of the inner support plates. The other end of the connecting rod is movably connected to the inner wall of the connecting block.

[0006] Optionally, the outer walls of both movable rings are fixedly connected with limit rods, and there are multiple limit rods. The inner wall of the connecting shaft is provided with limit grooves, and there are multiple limit grooves. The other ends of the multiple limit rods are located inside the multiple limit grooves.

[0007] Optionally, the outer wall of the connecting shaft is provided with a turntable groove, and the turntable is located inside the turntable groove.

[0008] Optionally, the inner wall of the connecting shaft is provided with a positioning groove, and the positioning ring is located inside the positioning groove.

[0009] Optionally, a ring is fixedly connected to the outer wall of the connecting shaft, the turntable groove is connected to the positioning groove, and the plurality of connecting rods are staggered with the plurality of limiting rods.

[0010] Optionally, the inner wall of the right end of the connecting shaft is threaded with a threaded post, the threaded post has a positioning hole inside, the other end of the adjusting screw extends into the positioning hole, the outer wall of the other end of the adjusting screw is not threaded with the inner wall of the positioning hole, and the other end of the threaded post is fixedly connected to a fixed shaft.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. During installation, the inner ring of the tapered roller bearing is fitted onto the outside of the connecting shaft. Rotating the turntable drives the adjusting screw to rotate synchronously, causing the two positioning rings to move synchronously in opposite directions. This causes the ends of the multiple connecting rods that are movably connected to them to move synchronously. The other ends of the multiple connecting rods work together to push the multiple inner support plates outward, so that the multiple inner support plates are supported from inside the tapered roller bearing. This can meet the processing requirements of different models of inner rings, improve applicability, eliminate the need to replace the entire centering shaft, save time, and improve processing efficiency.

[0013] 2. In this utility model, multiple limiting rods are fixedly connected to the outer walls of the two positioning rings, and the other ends of the multiple limiting rods are respectively located in the corresponding limiting grooves, so that the two positioning rings are limited and the stability of the movement process is guaranteed. A ring is connected to the outer wall of the connecting shaft, so that the inner ring of the tapered roller bearing is fitted on the outer wall of the connecting shaft and cannot move after contacting the ring, thus limiting the inner ring. The other end of the adjusting screw extends to the positioning hole opened in the threaded column to ensure the stability of the adjusting screw when it rotates. The fixed shaft can be connected to an external rotating mechanism. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the external structure of the connecting shaft of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the connecting rod and the connecting block of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal component structure of the connecting shaft of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B;

[0020] Figure 6 This is a schematic diagram of the internal support plate of this utility model;

[0021] Figure 7 This is a schematic diagram of the internal structure of the connecting shaft of this utility model;

[0022] Figure 8 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 9 This utility model Figure 8 A magnified structural diagram of point A in the middle.

[0024] In the diagram: 1. Connecting shaft; 2. Inner support plate groove; 3. Hollowed-out groove; 4. Adjusting screw; 5. Turntable; 6. Positioning ring; 7. Moving ring; 8. Rotating groove; 9. Connecting rod; 10. Inner support plate; 11. Connecting block; 12. Limiting rod; 13. Limiting groove; 14. Turntable groove; 15. Positioning groove; 16. Circular ring; 17. Threaded column; 18. Positioning hole; 19. Fixed shaft. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Reference Figure 1-9 The present invention will now describe an improved centering shaft for ultra-precision machine tools for the inner ring of a tapered roller bearing, provided by an embodiment of the present invention. An improved centering shaft for ultra-precision machine tools for the inner ring of a tapered roller bearing includes a connecting shaft 1. Multiple inner support plate grooves 2 are formed on the outer wall of the connecting shaft 1. Each inner support plate groove 2 has a hollowed-out groove 3 on its inner wall. An adjusting screw 4 is installed inside the connecting shaft 1. A turntable 5 is fixedly connected to one end of the adjusting screw 4. A positioning ring 6 is fixedly connected to the outer wall of the adjusting screw 4. Two moving rings 7 are threadedly connected to the outer wall of the adjusting screw 4. Each moving ring 7 has a rotating groove 8 on its outer wall. Multiple rotating grooves 8 are also present. Connecting rods 9 are movably connected to the inner walls of each rotating groove 8. Inner support plates 10 are provided inside each of the multiple inner support plate grooves 2. When the inner ring of the tapered roller bearing is fitted onto the outside of the connecting shaft 1, rotating the turntable 5 causes the adjusting screw 4 to rotate synchronously, causing the two positioning rings 6 to move synchronously in opposite directions. This causes the ends of the multiple connecting rods 9, which are movably connected to them, to move synchronously. The other end of the connecting rod 9 works together to push the multiple inner support plates 10 outward, so that the multiple inner support plates 10 are supported from the inside, which can meet the processing requirements of different models of inner rings, improve applicability, eliminate the need to replace the entire centering shaft, save time, and improve processing efficiency; the inner wall of the inner support plate 10 is fixedly connected to the connecting block 11, and there are two connecting blocks 11. The other end of the connecting rod 9 is movably connected to the inner wall of the connecting block 11. The outer walls of the two moving rings 7 are fixedly connected to the limiting rods 12, and there are multiple limiting rods 12. The inner wall of the connecting shaft 1 is provided with the limiting grooves 13, and there are multiple limiting grooves 13. The other ends of the multiple limiting rods 12 are located inside the multiple limiting grooves 13. The outer walls of the two positioning rings 6 are fixedly connected to the multiple limiting rods 12, and the other ends of the multiple limiting rods 12 are located in the corresponding limiting grooves 13, so that the two positioning rings 6 are limited and the stability of the movement process is guaranteed.

[0030] In another embodiment of this utility model, please refer to Figures 4 to 8The outer wall of the connecting shaft 1 is provided with a turntable groove 14, and the turntable 5 is located inside the turntable groove 14. The inner wall of the connecting shaft 1 is provided with a positioning groove 15, and the positioning ring 6 is located inside the positioning groove 15. A ring 16 is fixedly connected to the outer wall of the connecting shaft 1. The ring 16 is connected to the outer wall of the connecting shaft 1 so that the inner ring of the tapered roller bearing is fitted onto the outer wall of the connecting shaft 1 and cannot move after contacting the ring 16, thus limiting the positioning of the inner ring. The turntable groove 14 is connected to the positioning groove 15, and multiple connecting rods 9 are staggered with multiple limiting rods 12.

[0031] In another embodiment of this utility model, please refer to Figure 8 The inner wall of the right end of the connecting shaft 1 is threaded with a threaded post 17. The threaded post 17 has a positioning hole 18 inside. The other end of the adjusting screw 4 extends into the positioning hole 18. The other end of the adjusting screw 4 extends into the positioning hole 18 in the threaded post 17 to ensure the stability of the adjusting screw 4 when it rotates. The fixed shaft 19 can be connected to an external rotating mechanism. The outer wall of the other end of the adjusting screw 4 is not threaded with the inner wall of the positioning hole 18. The other end of the threaded post 17 is fixedly connected to the fixed shaft 19.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An improved centering shaft for ultra-precision machine tools for inner ring of tapered roller bearings, comprising a connecting shaft (1), characterized in that: The outer wall of the connecting shaft (1) is provided with an inner support plate groove (2), and there are multiple inner support plate grooves (2). The inner walls of the multiple inner support plate grooves (2) are provided with hollow grooves (3). An adjusting screw (4) is provided inside the connecting shaft (1). One end of the adjusting screw (4) is fixedly connected to a turntable (5). A positioning ring (6) is fixedly connected to the outer wall of the adjusting screw (4). A moving ring (7) is threadedly connected to the outer wall of the adjusting screw (4), and there are two moving rings (7). The outer walls of the two moving rings (7) are provided with rotating grooves (8), and there are multiple rotating grooves (8). The inner walls of the multiple rotating grooves (8) are movably connected with connecting rods (9). The inner walls of the multiple inner support plate grooves (2) are provided with inner support plates (10). The inner walls of the inner support plates (10) are fixedly connected with connecting blocks (11), and there are two connecting blocks (11). The other end of the connecting rod (9) is movably connected to the inner wall of the connecting block (11).

2. The improved tapered roller bearing inner ring centering shaft for ultra-precision machine tools as described in claim 1, characterized in that: The outer walls of the two moving rings (7) are fixedly connected with limit rods (12), and there are multiple limit rods (12). The inner wall of the connecting shaft (1) is provided with limit grooves (13), and there are multiple limit grooves (13). The other ends of the multiple limit rods (12) are located inside the multiple limit grooves (13).

3. The improved tapered roller bearing inner ring centering shaft for ultra-precision machine tools as described in claim 2, characterized in that: The outer wall of the connecting shaft (1) is provided with a turntable groove (14), and the turntable (5) is located inside the turntable groove (14).

4. The improved tapered roller bearing inner ring centering shaft for ultra-precision machine tools as described in claim 3, characterized in that: The inner wall of the connecting shaft (1) is provided with a positioning groove (15), and the positioning ring (6) is located inside the positioning groove (15).

5. The improved tapered roller bearing inner ring centering shaft for ultra-precision machine tools as described in claim 4, characterized in that: The outer wall of the connecting shaft (1) is fixedly connected to a ring (16), the turntable groove (14) is connected to the positioning groove (15), and the multiple connecting rods (9) are respectively staggered with the multiple limiting rods (12).

6. The improved tapered roller bearing inner ring centering shaft for ultra-precision machine tools as described in claim 1, characterized in that: The inner wall of the right end of the connecting shaft (1) is threaded with a threaded column (17), and the threaded column (17) has a positioning hole (18) inside. The other end of the adjusting screw (4) extends into the positioning hole (18), and the outer wall of the other end of the adjusting screw (4) is not threaded with the inner wall of the positioning hole (18). The other end of the threaded column (17) is fixedly connected with a fixing shaft (19).

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