Bearing outer ring machining fixing device

Abstract

The utility model relates to bearing processing technical field especially is involved in a kind of bearing outer ring machining fixing device, including lathe base, the upper surface of lathe base is provided with four support frames along equidistant interval circumferentially, the radial direction of the lathe base is provided with sliding slot on the support frame, sliding connection has supporting rod in the sliding slot, supporting rod is fixedly provided with tooling, the outer surface of tooling is cambered surface and with the inside of bearing outer ring is matched.The utility model is provided with four equidistant interval circumferentially arranged support frames, cooperate with the supporting rod of radial direction sliding slot and the tooling of fixed sleeve, realize from the inside of bearing outer ring and carry out clamping fixation.The outer surface of tooling is cambered surface and with the inside of bearing outer ring is matched, can stably adhere workpiece inner wall, entire outer diameter processing can be completed once clamping, avoid the positioning error caused by secondary clamping, significantly improve product coaxiality precision.

Description

Technical Field

[0001] This utility model relates to the field of bearing processing technology, and in particular to a bearing outer ring processing and fixing device. Background Technology

[0002] The existing method for machining the outer ring of self-aligning roller bearings involves using a four-point external clamp to secure the outer ring (this method only allows clamping at the outer diameter) before machining begins. Due to the clamping mechanism, only half of the outer diameter can be machined at this stage, requiring the product to be flipped over to continue machining. This method involves a second clamping process, which can easily lead to poor coaxiality. Furthermore, machining the outer diameter sides can cause uneven taper on the top and bottom edges. A step is also created at the outer diameter joint, resulting in a poor product appearance. Utility Model Content

[0003] The purpose of this utility model is to provide a bearing outer ring machining and fixing device that can solve the above-mentioned technical problems.

[0004] This utility model provides a bearing outer ring machining and fixing device, including a machine tool base. The upper surface of the machine tool base is provided with four support frames at equal intervals around the circumference. The support frames are provided with sliding grooves along the radial direction of the machine tool base. A support rod is slidably connected in the sliding groove. A tooling is fixedly sleeved on the support rod. The outer surface of the tooling is arc-shaped and matches the inner side of the bearing outer ring.

[0005] Furthermore, the groove is a T-shaped groove.

[0006] Furthermore, the support rod has an L-shaped structure, with its long side located inside the groove and its short side fixedly fitted with the tooling.

[0007] Furthermore, the long side cross-section of the support rod is T-shaped.

[0008] Furthermore, the support rod is provided with a threaded hole that passes through its long side, and a tensioning screw is internally threaded into the threaded hole. Both ends of the tensioning screw are smooth rods, and the middle part is provided with an external thread. A support plate is provided at the opening of the slide groove. One end of the tensioning screw is rotatably connected to the inner wall of the slide groove, and the other end passes through the support plate and is rotatably connected to it.

[0009] Furthermore, the tensioning screw is rotatably connected to the inner wall of the slide groove via a bearing.

[0010] Alternatively, the inner wall of the slide groove is provided with an annular groove, and the end of the tensioning screw near the annular groove is provided with a flange. The flange is located in the annular groove and is rotatably connected to it. The annular groove restricts the axial movement of the tensioning screw.

[0011] Furthermore, a square locking block is provided at one end of the tensioning screw near the support plate. The square locking block is locked by the four corner sleeves, and then the tensioning screw is rotated.

[0012] Furthermore, the support frame is fixedly connected to the machine tool base by bolts.

[0013] Furthermore, the tooling is made of steel and covered with plastic.

[0014] Beneficial effects:

[0015] This invention utilizes four circumferentially spaced support frames, along with radially sliding support rods and a fixed fixture, to achieve mounting and fixing of the bearing outer ring from the inside. The outer surface of the fixture is an arc surface that matches the inner side of the bearing outer ring, ensuring a stable fit against the inner wall of the workpiece. A single mounting completes the machining of the entire outer diameter, avoiding positioning errors caused by secondary mounting and significantly improving the product's coaxiality accuracy. The stable support structure of the inner mounting ensures that the workpiece maintains a uniform positioning reference and stress state throughout the machining process, guaranteeing a uniform taper of the entire outer diameter and effectively solving the problem of poor taper on the top and bottom sides. Since flipping is unnecessary, this device enables continuous machining of the bearing outer ring diameter, avoiding the seam steps caused by improper connection between two machining operations in existing technologies. This significantly improves the product's appearance quality, reduces subsequent grinding and other correction processes, and lowers production costs. The device, through the sliding cooperation of the slide groove and support rod, can adapt to the mounting requirements of bearing outer rings of different specifications, offering convenient adjustment. The entire outer diameter machining is completed in one setup, reducing process changeover time, significantly improving machining efficiency, and reducing the labor intensity of operators. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a single support frame in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the support rod used to demonstrate the present invention;

[0020] Figure 4 This is a schematic diagram of the tensioning screw in Embodiment 1 of this utility model;

[0021] Figure 5 This is a schematic diagram of the tensioning screw in Embodiment 2 of this utility model;

[0022] Figure 6 This is a schematic diagram illustrating the structure of the annular slot in this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the tooling and the outer ring of the bearing in the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1-Machine tool base, 2-Support frame, 3-Slide groove, 4-Support rod, 401-Long side, 402-Short side, 5-Tooling, 6-Tightening screw, 7-Support plate, 8-Bearing, 9-Annular groove, 10-Flange, 11-Square block, 12-Bolt, 13-Bearing outer ring. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, 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 "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1

[0029] A bearing outer ring machining and fixing device, such as Figure 1-4 As shown, the machine tool base 1 is provided. Four support frames 2 are provided at equal intervals around the upper surface of the machine tool base 1. The support frames 2 are fixedly connected to the machine tool base 1 by bolts 12. The support frames 2 are provided with a sliding groove 3 along the radial direction of the machine tool base. A support rod 4 is slidably connected in the sliding groove 3. A tooling 5 is fixedly sleeved on the support rod 4. The outer surface of the tooling 5 is arc-shaped and matches the inner side of the outer ring 13 of the bearing.

[0030] Specifically, the slide groove 3 is a T-slot. When the support rod 4 slides within the T-slot, the protruding parts on both sides of the T-slot effectively limit the support rod 4, preventing it from shifting vertically or falling off during sliding or under processing force. This greatly improves the stability and reliability of the fit between the support rod and the slide groove, ensuring the structural stability of the entire fixing device during operation. The support rod 4 has an L-shaped structure, with its long side 401 located within the slide groove and its short side 402 fixedly fitted with a fixture. The long side, located within the slide groove, forms a good fit with the T-slot, ensuring the stability and guidance of the support rod when sliding within the groove. Simultaneously, the long side provides sufficient length for the support rod to accommodate the support distance requirements of bearing outer rings of different sizes. Although the short side is shorter, it plays a crucial role in fixing the fixture. Its connection to the fixture can be achieved through welding, bolting, or other methods, ensuring the robustness of the connection between the fixture and the support rod. This allows the fixture to stably support the bearing outer ring, preventing the machining quality from being affected by loosening of the fixture during processing.

[0031] The long side 401 of the support rod 4 has a T-shaped cross-section. The long side of the T-shaped cross-section can fit perfectly into the T-groove. The upper and lower parts of the T-shape can form a tight fit with the inner wall of the T-groove. On the one hand, this ensures that the support rod slides smoothly in the groove. On the other hand, the T-shaped structure can effectively withstand the processing force transmitted from the tooling and distribute the force evenly on the groove, preventing the support rod from deforming or being damaged when under force. It also further enhances the connection stability between the support rod and the groove, ensuring that the support rod can be firmly fixed in the required position after the position is adjusted.

[0032] The support rod 4 has a threaded hole that passes through its long side 401. A tensioning screw 6 is threaded into the threaded hole. Both ends of the tensioning screw 6 are smooth rods, and the middle part has an external thread. A support plate 7 is provided at the opening of the slide groove 3. One end of the tensioning screw 6 is rotatably connected to the inner wall of the slide groove 3 through a bearing 8, and the other end passes through the support plate 7 and is rotatably connected to it. When the tensioning screw 6 rotates, the meshing action between the threads can drive the support rod 4 to move along the direction of the slide groove 3, thereby achieving precise adjustment of the position of the support rod. The support plate 7 provides a stable support point for the tensioning screw 6, ensuring the coaxiality of the tensioning screw 6 during rotation, avoiding the phenomenon of poor movement or jamming of the support rod due to the skew of the tensioning screw, and ensuring the smoothness and accuracy of the support rod position adjustment.

[0033] A square locking block 11 is provided at one end of the tensioning screw 6 near the support plate 7. This design provides a convenient interface for rotating the tensioning screw 6. The operator can use a four-corner sleeve to lock the square locking block, and then rotate the four-corner sleeve to drive the tensioning screw to rotate.

[0034] The tooling is made of steel with a plastic coating. Steel possesses high strength and hardness, meeting the strength requirements of the tooling during the machining of the bearing outer ring and ensuring a long service life. Simultaneously, the plastic coating provides good elasticity and cushioning properties. When the tooling comes into contact with the bearing outer ring, the plastic surface reduces rigid impact, preventing scratches or indentations on the bearing outer ring surface and protecting its machining accuracy and surface quality.

[0035] Example 2

[0036] The basic structure is the same as in Example 1, such as... Figure 5 and 6As shown, the difference lies in the following: the tensioning screw is rotatably connected to the inner wall of the slide groove 3 in the following manner. The inner wall of the slide groove 3 is provided with an annular groove 9, and the end of the tensioning screw 6 near the annular groove 9 is provided with a flange 10. The flange 10 is located in the annular groove 9 and rotatably connected to it. This structure can also achieve the rotatable connection of the tensioning screw 6, and the annular groove 9 can effectively restrict the axial movement of the tensioning screw 6. The design of the annular groove 9 provides an annular track for the flange 10, allowing the flange 10 to rotate freely within the annular groove 9. At the same time, the two side walls of the annular groove 9 can axially limit the flange 10, preventing the tensioning screw 6 from moving in the axial direction, avoiding the displacement of the support rod position caused by the axial movement of the tensioning screw, and ensuring the normal operation of the device. This connection method has a simple structure and low manufacturing cost.

[0037] Working and usage process:

[0038] After placing the bearing outer ring 13 on the support rod plane, use a wrench (or four-corner socket) to adjust the tension screw 6 so that the arc surface of the tooling contacts and tightens the arc surface of the inner side of the bearing outer ring. Figure 7 As shown, after the tooling's arc surface contacts the bearing's outer ring arc surface, the bearing's outer ring will automatically adjust according to the tooling's arc surface due to the tension force. Since the tooling primarily tensions the lower half of the bearing's outer ring arc surface, the tension force is decomposed into a downward vertical direction, causing the bearing's outer ring to experience a downward pressure. This ensures that the bearing's outer ring not only adjusts automatically but also prevents upward displacement. The tooling automatically clamps and adjusts according to the bearing's outer ring arc surface, saving time compared to manual adjustments.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bearing outer ring machining and fixing device, characterized in that, The machine tool base includes four support frames equidistantly spaced around its upper surface. Each support frame has a sliding groove along the radial direction of the machine tool base. A support rod is slidably connected within the sliding groove, and a tooling is fixedly fitted onto the support rod. The outer surface of the tooling is arc-shaped and matches the inner side of the outer ring of the bearing.

2. The bearing outer ring machining and fixing device according to claim 1, characterized in that, The groove is a T-shaped groove.

3. The bearing outer ring machining and fixing device according to claim 2, characterized in that, The support rod has an L-shaped structure, with its long side located inside the groove and its short side fixedly fitted with the tooling.

4. The bearing outer ring machining and fixing device according to claim 3, characterized in that, The long side cross-section of the support rod is T-shaped.

5. The bearing outer ring machining and fixing device according to claim 4, characterized in that, The support rod is provided with a threaded hole that passes through its long side. A tensioning screw is internally threaded into the threaded hole. Both ends of the tensioning screw are smooth rods, and the middle part is provided with an external thread. A support plate is provided at the opening of the slide groove. One end of the tensioning screw is rotatably connected to the inner wall of the slide groove, and the other end passes through the support plate and is rotatably connected to it.

6. The bearing outer ring machining and fixing device according to claim 5, characterized in that, The tensioning screw is rotatably connected to the inner wall of the slide groove via a bearing.

7. The bearing outer ring machining and fixing device according to claim 5, characterized in that, The inner wall of the slide groove is provided with an annular groove, and the end of the tensioning screw near the annular groove is provided with a flange, which is located in the annular groove and rotatably connected to it.

8. The bearing outer ring machining and fixing device according to claim 6 or 7, characterized in that, The tensioning screw has a square locking block at one end near the support plate.

9. The bearing outer ring machining and fixing device according to claim 1, characterized in that, The support frame is fixedly connected to the machine tool base by bolts.

10. The bearing outer ring machining and fixing device according to claim 1, characterized in that, The tooling is made of steel and covered with plastic.

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