Bearing ring turning fixing device

Abstract

The utility model discloses a bearing ring turning fixing device which comprises a chuck and an inner supporting assembly, the chuck comprises a chuck body, a plurality of clamping jaws are arranged on the chuck body, a fixing cover is arranged on one side of the chuck body, a gear disc is rotationally connected to the interior of the chuck body, a spiral groove is formed in one side of the gear disc, and the inner supporting assembly is arranged in the spiral groove. The other side of the gear disc is meshed with a rotary gear; the inner supporting assembly comprises a center rod, one end of the center rod is connected with the fixing cover, a plurality of supporting plates are evenly arranged on the outer portion of the center rod in the circumferential direction, the supporting plates are supported on the inner wall of the bearing ring, and the two ends of each supporting plate are connected with the center rod through connecting rods. The inner supporting assembly is arranged in the chuck, the bearing ring is jointly supported by the clamping jaws of the chuck and the supporting plates of the inner supporting assembly, the supporting area of the bearing ring is increased, the influence of cutting force on the bearing ring is effectively dispersed and reduced, and the risk of deformation of the bearing ring in the turning process is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of bearing manufacturing, and specifically relates to a bearing ring turning and fixing device. Background Technology

[0002] Bearing rings, especially thin-walled bearing rings, face a series of challenges during the turning process. These rings are usually thin-walled components with relatively simple structures, but they play a crucial role in positioning and rotation in the product and need to withstand certain radial and axial forces.

[0003] Turning is a crucial step in the manufacturing process of bearing rings, and its quality directly determines the final performance of the bearing rings. However, thin-walled bearing rings, due to their thin walls and poor rigidity, are extremely sensitive to stress changes during machining. When the bearing rings are mounted on a chuck for turning, the limited number of chuck jaws typically provides only discrete support points, failing to create continuous and uniform support for the bearing rings. This leads to localized deformation of the bearing rings during turning, especially under the intense pressure of the cutting tool, thus affecting their quality and precision. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a bearing ring turning and fixing device to solve the problem that bearing rings, especially thin-walled bearing rings, are prone to deformation during turning.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A bearing ring turning and fixing device includes a chuck and an inner support assembly. The chuck includes a chuck body with a plurality of jaws, at least three of which are provided. A fixed cover is provided on one side of the chuck body. A gear disk is rotatably connected inside the chuck body. A helical groove is provided on one side of the gear disk, and the helical groove cooperates with the jaws. A rotary gear is meshed on the other side of the gear disk to drive the gear disk to rotate, thereby causing the jaws to move closer or further apart.

[0007] The inner support assembly includes a central rod, one end of which is connected to a fixed cover. Several support plates are evenly arranged on the outer circumference of the central rod. The support plates are supported on the inner wall of the bearing ring, and both ends of the support plates are connected to the central rod through connecting rods.

[0008] Furthermore, the outer surface of the support plate has an arc-shaped structure.

[0009] Furthermore, a rubber pad is adhered to the outer surface of the support plate.

[0010] Furthermore, the central rod is fixedly connected to a fixed seat, and a movable seat is provided on one side of the fixed seat. The movable seat is slidably connected to the central rod, and a spring is connected between the fixed seat and the movable seat. The upper end of the connecting rod is pivotally connected to the support plate, the lower end of the connecting rod at one end of the support plate is pivotally connected to the fixed seat, and the lower end of the connecting rod at the other end of the support plate is pivotally connected to the movable seat. An adjusting knob is threaded onto the central rod, and the adjusting knob abuts against the outside of the movable seat to adjust the distance between the movable seat and the fixed seat.

[0011] Furthermore, the center rod is movably connected to the fixed cover, and a tightening bolt is threaded onto the chuck body, with the lower end of the tightening bolt abutting against the center rod.

[0012] Furthermore, the support plate and the claws are arranged alternately.

[0013] Furthermore, one end of the central rod is provided with several key bars, and the chuck body is provided with keyways that fit with the key bars.

[0014] The beneficial effects of this utility model are:

[0015] 1) This utility model has an internal support component inside the chuck. The chuck jaws and the support plate of the internal support component jointly support the bearing ring, which increases the support area of ​​the bearing ring, effectively disperses and reduces the impact of cutting force on the bearing ring, and reduces the risk of deformation during the turning process of the bearing ring.

[0016] 2) The outer surface of the support plate has an arc-shaped structure, and a rubber pad is adhered to the outer surface of the support plate to enhance the stability of the support assembly for the bearing ring, while avoiding the support plate from scratching the inner wall of the bearing ring during clamping and turning.

[0017] 3) By setting fixed and movable seats on the central rod, the support height of the support plate can be adjusted, which is suitable for bearing rings of different diameters and enhances the flexibility of the internal support assembly.

[0018] 4) The center rod is telescopic in the fixed cover and is fixed by the top bolt, which makes it easy to adjust the position of the inner support assembly to accommodate bearing rings of different widths.

[0019] 5) The staggered arrangement of the support plate and the jaws enhances the stability of the bearing ring clamping. Attached Figure Description

[0020] Appendix Figure 1 This is a diagram showing the usage state of a bearing ring turning and fixing device according to this utility model.

[0021] Appendix Figure 2 This is a schematic diagram of a bearing ring turning and fixing device according to the present invention.

[0022] Appendix Figure 3 This is a partial sectional view of a bearing ring turning and fixing device according to this utility model.

[0023] Appendix Figure 4 This is a schematic diagram of the internal support component structure.

[0024] In the diagram, 1. Chuck; 11. Chuck body; 12. Fixed cover; 13. Gear disk; 14. Rotary gear; 15. Chuck claw; 16. Tightening bolt; 2. Inner support assembly; 21. Center rod; 22. Connecting rod; 23. Support plate; 24. Rubber pad; 25. Fixed seat; 26. Movable seat; 27. Adjustment knob; 28. Spring; 29. ​​Key bar. Detailed Implementation

[0025] The following will be combined with the appendix Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 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.

[0027] like Figure 1 , Figure 2 As shown, a bearing ring turning and fixing device includes a chuck 1 and an inner support assembly 2, as shown. Figure 3 As shown, the chuck 1 includes a chuck body 11, on which a plurality of jaws 15 are provided, with at least three jaws 15. A fixed cover 12 is provided on one side of the chuck body 11. A gear disk 13 is rotatably connected inside the chuck body 11. A spiral groove is provided on one side of the gear disk 13, and the spiral groove cooperates with the jaws 15. A rotary gear 14 meshes on the other side of the gear disk 13 to drive the gear disk 13 to rotate, thereby causing the jaws 15 to move closer or further apart, so as to realize the clamping and loosening of the bearing ring by the jaws 15.

[0028] like Figure 4As shown, the inner support assembly 2 includes a central rod 21, one end of which is connected to the fixed cover 12. Several support plates 23 are evenly arranged in the outer circumferential direction of the central rod 21. The support plates 23 are supported on the inner wall of the bearing ring. The two ends of the support plates 23 are connected to the central rod 21 through connecting rods 22.

[0029] like Figure 4 As shown, the outer surface of the support plate 23 has an arc-shaped structure, which ensures the contact area between the support plate 23 and the inner wall of the bearing ring, thereby enhancing the stability of the support assembly for the bearing ring.

[0030] like Figure 4 As shown, a rubber pad 24 is adhered to the outer surface of the support plate 23 to prevent the support plate 23 from scratching the inner wall of the bearing ring during clamping and turning.

[0031] like Figure 4 As shown, the central rod 21 is fixedly connected to a fixed seat 25, and a movable seat 26 is provided on one side of the fixed seat 25. The movable seat 26 is slidably connected to the central rod 21, and a spring 28 is connected between the fixed seat 25 and the movable seat 26. The upper end of the connecting rod 22 is pivotally connected to the support plate 23, the lower end of the connecting rod 22 at one end of the support plate 23 is pivotally connected to the fixed seat 25, and the lower end of the connecting rod 22 at the other end of the support plate 23 is pivotally connected to the movable seat 26. An adjusting knob 27 is threaded onto the central rod 21, and the adjusting knob 27 abuts against the outer side of the movable seat 26. It is used to adjust the distance between the movable seat 26 and the fixed seat 25, thereby facilitating the adjustment of the support position of the support plate 23 according to the inner diameter of the bearing ring, and enhancing the flexibility of the inner support assembly 2.

[0032] like Figure 3 As shown, the center rod 21 is movably connected to the fixed cover 12, and a tightening bolt 16 is threadedly connected to the chuck body 11. The lower end of the tightening bolt 16 abuts against the center rod 21, so that the center rod 21 can extend and retract on the chuck 1 to accommodate bearing rings of different widths.

[0033] like Figure 2 As shown, the support plate 23 and the claw 15 are arranged in an alternating manner, which further enhances the stability of the bearing ring clamping.

[0034] like Figure 3 , Figure 4 As shown, one end of the central rod 21 is provided with several key bars 29, and the chuck body 11 is provided with a keyway (not shown in the figure) that is clearance-fitted with the key bars 29, so as to prevent the central rod 21 from rotating and shifting after the bearing ring is clamped.

[0035] When machining the outer wall of the bearing ring, first use the chuck 15 to hold the bearing ring, then adjust the position of the center rod 21 according to the width of the bearing ring, and then use the tightening screw to lock the center rod 21. Turn the adjusting knob 27 to move the movable seat 26 to the side of the fixed seat 25, so that the support plate 23 presses against the inner wall of the bearing ring. Since the support plate 23 and the chuck 15 are arranged alternately, the support plate 23 and the chuck 15 work together to support the bearing ring, ensuring the stability of the bearing ring clamping.

[0036] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A bearing ring turning and fixing device, comprising a chuck and an inner support assembly, wherein the chuck comprises a chuck body, the chuck body is provided with a plurality of jaws, the jaws being at least three, a fixing cover is provided on one side of the chuck body, a gear disk is rotatably connected inside the chuck body, a helical groove is provided on one side of the gear disk and the helical groove cooperates with the jaws, and a rotary gear meshes on the other side of the gear disk for driving the gear disk to rotate, thereby causing the jaws to move closer or further apart; characterized in that The inner support assembly includes a central rod, one end of which is connected to a fixed cover. Several support plates are evenly arranged on the outer circumference of the central rod. The support plates are supported on the inner wall of the bearing ring, and both ends of the support plates are connected to the central rod through connecting rods.

2. The bearing ring turning fixture of claim 1 wherein, The outer surface of the support plate has an arc-shaped structure.

3. The bearing ring turning fixture of claim 1 wherein, A rubber pad is adhered to the outer surface of the support plate.

4. The bearing ring turning fixture of claim 1 wherein, The central rod is fixedly connected to a fixed seat, and a movable seat is provided on one side of the fixed seat. The movable seat is slidably connected to the central rod, and a spring connects the fixed seat and the movable seat. The upper end of the connecting rod is pivotally connected to the support plate, the lower end of the connecting rod at one end of the support plate is pivotally connected to the fixed seat, and the lower end of the connecting rod at the other end of the support plate is pivotally connected to the movable seat. An adjusting knob is threaded onto the central rod, and the adjusting knob abuts against the outside of the movable seat to adjust the distance between the movable seat and the fixed seat.

5. The bearing ring turning fixture of claim 1 wherein, The center rod is movably connected to the fixed cover, and a tightening bolt is threaded onto the chuck body, with the lower end of the tightening bolt abutting against the center rod.

6. A bearing ring turning fixture according to any one of claims 1-5, characterized in that The support plate and the claws are arranged alternately.

7. A bearing ring turning fixture as claimed in claim 6, wherein, The center rod has several key bars at one end, and the chuck body has keyways that fit with the key bars.

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