A processing tool for a rotary table bearing

Abstract

The application discloses a turntable bearing machining tool, and relates to the technical field of bearing machining.The tool comprises a base, and a first sliding block group and a second sliding block group are arranged around the bearing center on the base.The first sliding block group comprises a plurality of first sliding blocks capable of synchronous radial movement and used for positioning the bearing outer ring from the outside; the second sliding block group comprises a plurality of second sliding blocks capable of synchronous radial movement and used for positioning the bearing inner ring from the inside.The first and second sliding block groups are respectively driven by independent first and second synchronous driving mechanisms, wherein the first synchronous driving mechanism adopts a transmission system composed of a motor, a bevel gear and a transmission shaft to realize synchronization, and the second synchronous driving mechanism realizes synchronization by simultaneously meshing a plurality of gears through motor driving face gears.The application realizes accurate, synchronous and concentric positioning of the inner and outer rings of the turntable bearing, the clamping force is uniform, and the tool can be adapted to bearings with different diameters by replacing the positioning plate, so that the assembly efficiency and quality are effectively improved.

Description

Technical Field

[0001] This application relates to the field of bearing processing technology, and in particular to a tooling for machining turntable bearings. Background Technology

[0002] Slewing bearings are large bearings capable of simultaneously withstanding axial loads, radial loads, and overturning moments, and are widely used in engineering machinery, port machinery, and other fields. During the assembly of slewing bearings, the inner ring, outer ring, rolling elements, and other components need to be precisely aligned and fixed to facilitate subsequent riveting or bolting connections.

[0003] Due to the large size and weight of the slewing bearing, manually adjusting the relative positions of the inner and outer rings is extremely difficult, inefficient, and makes it hard to guarantee alignment accuracy. Existing tooling fixtures often only fix a single ring (inner or outer ring) or cannot achieve synchronous movement of multiple clamping points, leading to problems such as inaccurate positioning and uneven clamping force, thus affecting assembly quality.

[0004] Therefore, there is an urgent need for a machining fixture that can simultaneously and accurately position and clamp the inner and outer rings of a slewing bearing. Summary of the Invention

[0005] The purpose of this application is to provide a slewing bearing machining fixture to solve the above problems, which can simultaneously and accurately position the inner and outer rings of the slewing bearing, facilitate assembly, and adapt to slewing bearings of different sizes.

[0006] This application achieves the above objectives through the following technical solutions:

[0007] A turntable bearing machining fixture includes a base, characterized in that: the base is provided with a first slider group and a second slider group arranged in a ring around the center of the bearing; the first slider group includes a plurality of first sliders that can move synchronously along the radial direction of the bearing for positioning the outer ring of the bearing from the outside; the second slider group includes a plurality of second sliders that can move synchronously along the radial direction of the bearing for positioning the inner ring of the bearing from the inside.

[0008] The base is provided with a first groove for the first slider to slide and a second groove for the second slider to slide; the extension directions of the first groove and the second groove are both consistent with the radial direction of the bearing.

[0009] In some embodiments, the first slider group is connected to a first synchronous drive mechanism for driving all first sliders to move radially synchronously; the second slider group is connected to a second synchronous drive mechanism for driving all second sliders to move radially synchronously; the first synchronous drive mechanism and the second synchronous drive mechanism are independent of each other.

[0010] In some embodiments, the first synchronous drive mechanism includes a first lead screw threadedly connected to each of the first sliders, and a first transmission system that synchronously drives all the first lead screws to rotate; the second synchronous drive mechanism includes a second lead screw threadedly connected to each of the second sliders, and a second transmission system that synchronously drives all the second lead screws to rotate.

[0011] In some embodiments, the first transmission system includes a first motor, a driving bevel gear driven by the first motor, multiple transmission shafts supported on a base by transmission shaft seats, linkage bevel gears disposed at the ends of adjacent transmission shafts and meshing with each other, transmission bevel gears disposed on each transmission shaft, and a passive bevel gear disposed at the end of each first lead screw and meshing with the corresponding transmission bevel gear.

[0012] In some embodiments, the second transmission system includes a second motor, a face gear driven by the second motor, and gears disposed at the ends of each second lead screw and meshing with the face gears simultaneously.

[0013] In some embodiments, the top of the first slider is detachably provided with a first positioning plate for contacting the outer ring of the bearing, and the top of the second slider is detachably provided with a second positioning plate for contacting the inner ring of the bearing; the first positioning plate and the second positioning plate are arc-shaped plates.

[0014] In some embodiments, the first positioning plate is locked and fixed to the first slider by a first fastener; the second positioning plate is locked and fixed to the second slider by a second fastener.

[0015] Compared with the prior art, this application, by setting up a first slider group and a second slider group that can move synchronously, can accurately concentrically position the outer ring and inner ring of the bearing from the outside and the inside respectively, ensuring the alignment of the inner and outer rings during assembly, greatly facilitating the installation of components such as rolling elements, and improving assembly efficiency and accuracy.

[0016] The first and second synchronous drive mechanisms are independent of each other and can control the clamping of the outer ring and the expansion of the inner ring respectively. They are flexible in operation and can adapt to different assembly process requirements.

[0017] By employing a bevel gear transmission system and a face gear transmission system, a single power source can be synchronously and stably transmitted to multiple clamping points, ensuring the synchronicity of movement of all clamping points. This guarantees the uniform distribution of clamping force and avoids deformation of the bearing ring due to uneven force.

[0018] The positioning plate features a detachable design and an arc shape, allowing for easy replacement with positioning plates of different sizes or curvatures. This enables the fixture to be adapted to turntable bearings of different diameters and models, providing strong versatility and reducing tooling costs. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this application.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Base; 2. First slide groove; 3. First lead screw; 4. First slider; 5. First positioning plate; 6. First fastener; 7. Drive shaft; 8. Linkage bevel gear; 9. Drive bevel gear; 10. Drive shaft seat; 11. Second slide groove; 12. Second lead screw; 13. Second slider; 14. Second positioning plate; 15. Second fastener; 16. Gear; 17. Second motor; 18. Face gear; 19. First motor; 20. Driving bevel gear; 21. Driven bevel gear. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0024] In the description of this application, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 This description is provided for the convenience of describing this application and for the purpose of simplifying the description, and is 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 application.

[0025] like Figure 1 As shown, a slewing bearing machining fixture includes a base 1 that provides stable support. The base 1 has a mounting surface.

[0026] On the upper surface of the base 1, multiple first grooves 2 and multiple second grooves 11 are arranged in a circular pattern around the theoretical center of the turntable bearing to be processed. In some embodiments, there are four first grooves 2 and four second grooves 11, evenly distributed in a cross shape to ensure balanced clamping force. Further, each of the first grooves 2 contains a first slider 4, and each of the second grooves 11 contains a second slider 13. The first slider 4 and the first groove 2, and the second slider 13 and the second groove 11, are all fitted with clearance and can slide smoothly within the grooves. It is particularly important to note that the extension direction of all these first grooves 2 and second grooves 11 strictly points towards the center of the bearing, that is, it is consistent with the radial direction of the bearing, thereby ensuring that the first slider 4 and the second slider 13 can move linearly in the radial direction.

[0027] The first slider group is connected to a first synchronous drive mechanism for driving all the first sliders 4 to move synchronously inward or outward. Specifically, in some embodiments, the first synchronous drive mechanism includes a first lead screw 3, a first transmission system, and a first motor 19. Each first lead screw 3 is rotatably mounted in a first slide groove 2 via a bearing seat (not shown separately in the figure) and is threadedly connected to the first slider 4 disposed in the first slide groove 2. When the first lead screw 3 rotates, it drives the first slider 4 to move along the first slide groove 2.

[0028] Furthermore, the first transmission system is used to synchronously transmit the power of the first motor 19 to all the first lead screws 3. Its specific configuration includes: the first motor 19 is fixedly mounted on the base 1, and a driving bevel gear 20 is fixedly connected to its output shaft. Multiple transmission shafts 7 are rotatably mounted above the base 1, supported by transmission shaft seats 10, and these transmission shafts 7 are arranged concentrically around the bearing center. At the ends of adjacent transmission shafts 7, linkage bevel gears 8 are fixedly installed, and these linkage bevel gears 8 mesh with each other, thereby linking all the transmission shafts 7 into a whole. A key improvement is that a transmission bevel gear 9 is also fixedly installed on each transmission shaft 7. Correspondingly, at one end of each first lead screw 3, after passing through the first sliding groove 2, a driven bevel gear 21 is fixedly connected. Each transmission bevel gear 9 meshes with a driven bevel gear 21. During operation, the first motor 19 starts, driving the active bevel gear 20 to rotate. The active bevel gear 20 drives a meshing linked bevel gear 8 to rotate. Through the meshing of the linked bevel gears 8, all transmission shafts 7 begin to rotate synchronously. The transmission shafts 7 drive the transmission bevel gears 9 on them to rotate, and the transmission bevel gears 9 then drive the meshing passive bevel gears 21, ultimately driving all the first lead screws 3 to rotate synchronously, realizing the synchronous radial movement of all the first sliders 4.

[0029] The second slider group is connected to a second synchronous drive mechanism for driving all second sliders 13 to move synchronously inward or outward. In some preferred embodiments, the second synchronous drive mechanism includes a second lead screw 12, a second transmission system, and a second motor 17. Each second lead screw 12 is rotatably disposed within a second slide groove 11 and threadedly connected to the second slider 13. The second transmission system includes gears 16 and face gears 18. At one end of each second lead screw 12, a gear 16 is fixedly connected after passing through the second slide groove 11. The second motor 17 is fixedly mounted on the base 1, and a face gear 18 is fixedly connected to its output shaft. Furthermore, the mounting position of this face gear 18 allows it to mesh simultaneously with the gears 16 at the ends of all second lead screws 12. When the second motor 17 starts, it directly drives the face gear 18 to rotate, and the face gear 18 simultaneously drives all surrounding gears 16 that mesh with it to rotate synchronously, thereby driving all second lead screws 12 to rotate synchronously, ultimately achieving synchronous radial movement of all second sliders 13.

[0030] To improve the versatility of the tooling and enable it to adapt to turntable bearings of different sizes, in some embodiments, a first positioning plate 5 is detachably mounted on the top of the first slider 4. Similarly, a second positioning plate 14 is detachably mounted on the top of the second slider 13. The first positioning plate 5 and the second positioning plate 14 are components that directly contact the outer wall of the bearing's outer ring and the inner wall of the bearing's inner ring. Furthermore, the first positioning plate 5 and the second positioning plate 14 are designed with an arc shape, the curvature of which is adapted to the outer wall of the bearing's outer ring and the inner wall of the bearing's inner ring, respectively, to increase the contact area and reduce local stress. Even further, the first positioning plate 5 is connected and locked to the threaded hole on the first slider 4 by a first fastener 6 (e.g., an internal hex bolt) that passes through it. Similarly, the second positioning plate 14 is locked to the second slider 13 by a second fastener 15. When it is necessary to process bearings of different diameters, only the first positioning plate 5 and the second positioning plate 14 with different arc lengths or arc heights need to be replaced, without replacing the entire slider or tooling body. The operation is simple and the cost is low.

[0031] During assembly, the outer ring of the turntable bearing is first hoisted to the center of the base 1, positioning it approximately between the four first sliders 4. The first motor 19 is started, driving all the first sliders 4 synchronously inward via the first synchronous drive mechanism until the first positioning plate 5 firmly adheres to and clamps the outer wall of the bearing outer ring, completing the outer ring positioning. Next, the bearing inner ring is hoisted into the outer ring and placed on the second slider 13. The second motor 17 is started, driving all the second sliders 13 synchronously outward (i.e., radially expanding) via the second synchronous drive mechanism until the second positioning plate 14 firmly adheres to and presses against the inner wall of the bearing inner ring, completing the inner ring positioning. At this point, the inner and outer rings of the bearing are precisely aligned and fixed, allowing the operator to easily install the rolling elements or perform other assembly operations. After the operation is completed, the motor is reversed to release the inner and outer rings, allowing the assembled bearing to be hoisted away.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A machining fixture for a turntable bearing, characterized in that, The base (1) is characterized in that: a first slider group and a second slider group are arranged on the base (1) in a circular arrangement around the center of the bearing. The first slider group includes a plurality of first sliders (4) that can move synchronously along the radial direction of the bearing, for positioning the outer ring of the bearing from the outside. The second slider group includes a plurality of second sliders (13) that can move synchronously along the radial direction of the bearing, for positioning the inner ring of the bearing from the inside. The base (1) is provided with a first groove (2) for the first slider (4) to slide and a second groove (11) for the second slider (13) to slide; the extension directions of the first groove (2) and the second groove (11) are both consistent with the radial direction of the bearing.

2. The machining fixture for turntable bearings according to claim 1, characterized in that: The first slider group is connected to a first synchronous drive mechanism for driving all first sliders (4) to move radially synchronously; the second slider group is connected to a second synchronous drive mechanism for driving all second sliders (13) to move radially synchronously; the first synchronous drive mechanism and the second synchronous drive mechanism are independent of each other.

3. The machining fixture for turntable bearings according to claim 2, characterized in that: The first synchronous drive mechanism includes a first lead screw (3) threadedly connected to each first slider (4) and a first transmission system that synchronously drives all first lead screws (3) to rotate; the second synchronous drive mechanism includes a second lead screw (12) threadedly connected to each second slider (13) and a second transmission system that synchronously drives all second lead screws (12) to rotate.

4. The machining fixture for turntable bearings according to claim 3, characterized in that: The first transmission system includes a first motor (19), an active bevel gear (20) driven by the first motor (19), multiple transmission shafts (7) supported on the base (1) by transmission shaft seats (10), linkage bevel gears (8) disposed at the ends of adjacent transmission shafts (7) and meshing with each other, transmission bevel gears (9) disposed on each transmission shaft (7), and passive bevel gears (21) disposed at the ends of each first lead screw (3) and meshing with the corresponding transmission bevel gears (9).

5. The machining fixture for turntable bearings according to claim 3, characterized in that: The second transmission system includes a second motor (17), a face gear (18) driven by the second motor (17), and a gear (16) disposed at the end of each second lead screw (12) and meshing with the face gear (18).

6. The machining fixture for turntable bearings according to claim 1, characterized in that: The top of the first slider (4) is detachably provided with a first positioning plate (5) for contacting the outer ring of the bearing, and the top of the second slider (13) is detachably provided with a second positioning plate (14) for contacting the inner ring of the bearing; the first positioning plate (5) and the second positioning plate (14) are arc-shaped plates.

7. The machining fixture for turntable bearings according to claim 6, characterized in that: The first positioning plate (5) is locked and fixed to the first slider (4) by the first fastener (6); the second positioning plate (14) is locked and fixed to the second slider (13) by the second fastener (15).

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