Switching sleeve ball bearing outer ring fixing structure with positioning function

Abstract

The utility model provides a switching sleeve ball bearing outer ring fixing structure with a positioning function, and relates to the technical field of bearing fixing structures, the switching sleeve ball bearing outer ring fixing structure with the positioning function comprises a shifting fork, bearing outer ring shifting blocks are installed on the two opposite side faces in the shifting fork, and the bearing outer ring shifting blocks are arranged in the shifting fork. A bearing is arranged between the two bearing outer ring shifting blocks, the inner wall of the bearing is fixedly connected with a switching sleeve, and a fixing base is arranged in the shifting fork. The bearing outer ring fixing block and the bearing outer ring pressing block are connected to the fixing base to position and fix the outer ring of the bearing, and when the main shaft is in the high-speed rotating working state, a bar clamps and loosens the switching sleeve, and when the bearing axially moves, the outer ring of the bearing is in a static state; the situation that the inner ring of the bearing drives the outer ring to rotate at a high speed and generates friction heating with the bearing outer ring shifting block is avoided, then the situation that faults and shutdown occur due to bearing ablation is avoided, and the service life of the bearing and normal machining work are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of bearing fixing structure technology, specifically a fixing structure for the outer ring of a ball bearing with a positioning function. Background Technology

[0002] CNC longitudinal cutting refers to the process of cutting along the central axis (i.e., longitudinal direction) of a workpiece using a cutting tool on a CNC machine tool. A switching sleeve is required during CNC longitudinal cutting. To ensure the normal rotation of the switching sleeve, the outer wall of the switching sleeve is usually connected to the inner ring of a ball bearing. A schematic diagram of the connection between the switching sleeve and the ball bearing in existing technology is shown in the attached instruction manual. Figure 6 As shown, the switching sleeve moving bearing is a ball bearing. The inner ring of the switching sleeve moving bearing is fastened to the switching sleeve and rotates at high speed with the spindle. When the cutting bar needs to be clamped, the cylinder pushes the shift fork and the outer ring of the bearing to swing. The outer ring of the switching sleeve moving bearing, which is limited in the U-shaped groove of the outer ring of the bearing, drives the switching sleeve to move forward or backward and pushes the spindle push rod to complete the clamping action.

[0003] When this type of switching sleeve movable bearing is in operation, its outer ring is in a free state. When the switching sleeve movable bearing rotates at high speed with the main shaft, the raceway heats up and expands. The inner ring drives the outer ring to rotate at high speed and generates friction and heat with the bearing outer ring pusher, which eventually leads to the burning of the switching sleeve movable bearing, resulting in failure and shutdown. Therefore, a switching sleeve ball bearing outer ring fixing structure with positioning function is needed to solve the above technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a positioning function for a switchable ball bearing outer ring fixing structure, aiming to solve the problems in the prior art.

[0005] To achieve the above objectives, one embodiment of this utility model provides a positioning function for fixing the outer ring of a switching ball bearing, including a shift fork. Two opposing sides inside the shift fork are each equipped with a bearing outer ring shift block. A bearing is disposed between the two bearing outer ring shift blocks. A switching sleeve is fixedly connected to the inner wall of the bearing. A fixing seat is disposed inside the shift fork. A detachable bearing outer ring fixing block connected to the bearing is connected to the fixing seat. A bearing outer ring pressure block is fixedly installed on one side of the bearing outer ring fixing block. The bearing outer ring is fixed by the bearing outer ring fixing block and the bearing outer ring pressure block.

[0006] Preferably, a fixing assembly for fixing the bearing outer ring fixing block is provided between the fixing seat and the bearing outer ring fixing block, the fixing assembly including a fixing structure and a positioning structure installed on the fixing seat.

[0007] Preferably, the fixing structure includes two mounting slots formed on one side of the fixing seat. A guide rod and a fixing spring sleeved on the outer surface of the guide rod are fixedly connected to the inner wall of the mounting slot. A movable dial plate connected to the fixing spring is slidably connected to the outer surface of the guide rod. A fixed insert rod slidably connected to the fixing seat is fixedly connected to the side of the movable dial plate away from the fixing spring.

[0008] Preferably, the positioning structure includes a positioning slot on one side of the fixed seat and a positioning block connected to the bearing outer ring fixing block. One side of the positioning block has a fixing hole adapted to the size of the fixing rod. The fixing rod can be inserted into the fixing hole. The positioning block can be engaged in the positioning slot. The positioning block and the positioning slot have the same shape and are adapted to each other in size.

[0009] Preferably, the bearing outer ring fixing block includes a fixing block for fixing the bearing outer ring and a fixing plate connected to the fixing block. The fixing plate and the fixing block are an integral structure. The positioning block is installed on one side of the fixing plate. The bottom end of the fixing block and the bearing outer ring pressing block are both arc-shaped. The bottom end diameter of the fixing block and the bearing outer ring pressing block is smaller than the outer diameter of the bearing outer ring.

[0010] Preferably, an arc-shaped connecting groove is provided on one side of the fixing block. The diameter of the arc-shaped connecting groove is adapted to the outer diameter of the outer ring of the bearing, and the thickness of the bearing is adapted to the depth of the arc-shaped connecting groove. The outer ring of the bearing can be installed inside the arc-shaped connecting groove.

[0011] Preferably, the outer surface of the switching sleeve is provided with a switching sleeve nut that fits with the bearing. The switching sleeve nut is circular in shape, and its outer diameter is adapted to the bottom diameter of the fixing block.

[0012] Preferably, the two symmetrical sides of the shift fork are provided with limiting grooves, and one side of the fixed hanging plate is in contact with the inner wall of the limiting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By connecting the bearing outer ring fixing block and the bearing outer ring pressure block on the fixed seat, the outer ring of the bearing is positioned and fixed. When the bar stock is clamped and released and the bearing moves axially during the high-speed rotation of the spindle, the outer ring of the bearing is stationary. This avoids the situation where the inner ring of the bearing drives the outer ring to rotate at high speed and generates friction and heat with the bearing outer ring pressing block, thereby avoiding bearing burnout and failure or machine downtime, ensuring the service life of the bearing and the normal operation of the processing work.

[0015] 2. By setting up a fixed structure and a positioning structure, the bearing outer ring fixing block can be quickly positioned and fixed, making the assembly of the positioning function switchable ball bearing outer ring fixing structure simpler, improving the efficiency of assembling the positioning function switchable ball bearing outer ring fixing structure, and further improving the practicality of the positioning function switchable ball bearing outer ring fixing structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the present invention without the assembled bearing;

[0019] Figure 4 This is a structural schematic diagram of the bearing and its connecting components according to this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the bearing outer ring fixing block of this utility model;

[0021] Figure 6 This is a comparative structural diagram of the prior art of this utility model.

[0022] In the diagram: 10, shift fork; 20, bearing outer ring shift block; 30, bearing; 40, switching sleeve; 41, switching sleeve nut; 50, fixed seat; 51, fixed structure; 511, mounting groove; 512, guide rod; 513, fixed spring; 514, moving shift plate; 515, fixed insert rod; 52, positioning slot; 60, bearing outer ring fixing block; 601, fixing block; 602, fixed hanging plate; 603, arc-shaped connecting groove; 61, positioning block; 611, fixed insertion hole; 70, bearing outer ring pressure block. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings.

[0024] like Figures 1 to 5As shown, a positioning function switching ball bearing outer ring fixing structure includes a shift fork 10. Two opposing bearing outer ring shift blocks 20 are installed on opposite sides of the shift fork 10, with the positions of the two outer ring shift blocks 20 corresponding to each other. A bearing 30 is disposed between the two outer ring shift blocks 20. Each of the two outer ring shift blocks 20 has a U-shaped groove for limiting the bearing 30. A switching sleeve 40 is fixedly connected to the inner wall of the bearing 30. Both the bearing 30 and the switching sleeve 40 are located at the lower position inside the shift fork 10. A fixing seat 50 is disposed inside the shift fork 10. A detachable bearing outer ring fixing block 60 connected to the fixing seat 50 and connected to the bearing 30 is connected to the fixing seat 50. A bearing outer ring pressure block 70 is fixedly installed on one side of the bearing outer ring fixing block 60. The outer ring of the bearing 30 is fixed by the bearing outer ring fixing block 60 and the bearing outer ring pressure block 70.

[0025] A fixing assembly for fixing the bearing outer ring fixing block 60 is provided between the fixing seat 50 and the bearing outer ring fixing block 60. The fixing assembly includes a fixing structure 51 and a positioning structure mounted on the fixing seat 50. The fixing structure 51 includes two mounting grooves 511 formed on one side of the fixing seat 50. The length direction of the two mounting grooves 511 is parallel to the length direction of the fixing seat 50. A guide rod 512 and a fixing spring 513 sleeved on the outer surface of the guide rod 512 are fixedly connected to the inner wall of the mounting groove 511. A movable lever 514 connected to the fixing spring 513 is slidably connected to the outer surface of the guide rod 512, and the movable lever 514 is slidably connected to the mounting groove 511, so that the movable lever 514 can move smoothly along the direction of the mounting groove 511. The guide rod 512 prevents the fixed spring 513 from bending during elastic deformation. A fixed insert rod 515, slidably connected to the fixed seat 50, is fixedly connected to the side of the movable dial 514 away from the fixed spring 513. The fixed insert rod 515 passes through the fixed seat 50, allowing it to move smoothly. The positioning structure includes a positioning groove 52 on one side of the fixed seat 50 and a positioning block 61 connected to the bearing outer ring fixing block 60. The positioning groove 52 corresponds to the position of the fixed insert rod 515. A fixed insertion hole 611, matching the size of the fixed insert rod 515, is provided on one side of the positioning block 61, allowing the fixed insert rod 515 to be inserted into the fixed insertion hole 611. Internally, the positioning block 61 can be engaged inside the positioning slot 52. The positioning block 61 and the positioning slot 52 have the same shape and are compatible in size. The positioning block 61 and the positioning slot 52 can be T-shaped or dovetail-shaped. The positioning block 61 and the positioning slot 52 can quickly position the bearing outer ring fixing block 60 and make the connection between the bearing outer ring fixing block 60 and the fixing seat 50 more stable. The bearing outer ring fixing block 60 includes a fixing block 601 for fixing the outer ring of the bearing 30 and a fixing plate 602 connected to the fixing block 601. A part of the fixing seat 50 is located between the two fixing plates 602. The length of the fixing plate 602 is equal to the minimum distance between the two fixing plates 602. The mounting plate 602 and the fixing block 601 are integrated into one structure. The positioning block 61 is installed on one side of the mounting plate 602. The bottom ends of the fixing block 601 and the bearing outer ring pressure block 70 are both arc-shaped. The bottom diameter of the fixing block 601 and the bearing outer ring pressure block 70 is smaller than the outer diameter of the bearing 30 outer ring. An arc-shaped connecting groove 603 is provided on one side of the fixing block 601. The diameter of the arc-shaped connecting groove 603 is adapted to the outer diameter of the bearing 30 outer ring, and the thickness of the bearing 30 is adapted to the depth of the arc-shaped connecting groove 603. The outer ring of the bearing 30 can be installed inside the arc-shaped connecting groove 603. The bearing 30 is limited and fixed by the bearing outer ring pressure block 70, the fixing block 601 and the arc-shaped connecting groove 603 to prevent the bearing 30 from shifting position.

[0026] The outer surface of the switching sleeve 40 is provided with a switching sleeve nut 41 that fits against the bearing 30. The switching sleeve nut 41 is circular in shape, and its outer diameter is matched with the bottom diameter of the fixing block 601.

[0027] Limiting grooves are provided on both symmetrical sides of the shift fork 10. One side of the fixed mounting plate 602 is in contact with the inner wall of the limiting groove. By having the two fixed mounting plates 602 respectively in contact with the inner wall of the limiting groove, the fixed mounting plate 602 can be limited, preventing the fixed mounting plate 602 from shifting left or right inside the shift fork 10.

[0028] The working principle of this utility model is as follows:

[0029] 1) The movable dial 514 drives the fixed rod 515 to move and retracts the fixed rod 515 into the mounting groove 511. At this time, the fixed spring 513 is in a compressed state.

[0030] 2) Insert the positioning block 61 into the positioning slot 52 and insert the fixing plate 602 into the limiting slot. At this time, the fixing rod 515 and the fixing hole 611 are in the same position.

[0031] 3) Slowly release the moving dial 514. Under the reaction force of the fixed spring 513, the fixed insert 515 is inserted into the fixed insertion hole 611, thereby fixing the fixed hanging plate 602 and connecting the bearing outer ring fixing block 60 and the fixed seat 50. At this time, when the switching sleeve 40 rotates with the rotation of the main shaft, the outer ring of the bearing 30 will not rotate, thereby avoiding the situation of friction and heat generation of the outer ring of the bearing 30.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning function for fixing the outer ring of a switchable ball bearing, characterized in that: The device includes a shift fork (10), on which two opposite sides are mounted bearing outer ring shift blocks (20). A bearing (30) is disposed between the two bearing outer ring shift blocks (20). A switching sleeve (40) is fixedly connected to the inner wall of the bearing (30). A fixing seat (50) is disposed inside the shift fork (10). A detachable bearing outer ring fixing block (60) connected to the bearing (30) is attached to the fixing seat (50). A bearing outer ring pressure block (70) is fixedly installed on one side of the bearing outer ring fixing block (60). The outer ring of the bearing (30) is fixed by the bearing outer ring fixing block (60) and the bearing outer ring pressure block (70).

2. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 1, characterized in that: A fixing assembly for fixing the bearing outer ring fixing block (60) is provided between the fixing seat (50) and the bearing outer ring fixing block (60). The fixing assembly includes a fixing structure (51) and a positioning structure installed on the fixing seat (50).

3. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 2, characterized in that: The fixing structure (51) includes two mounting slots (511) opened on one side of the fixing seat (50). The inner wall of the mounting slot (511) is fixedly connected to a guide rod (512) and a fixing spring (513) sleeved on the outer surface of the guide rod (512). The outer surface of the guide rod (512) is slidably connected to a movable dial plate (514) connected to the fixing spring (513). The side of the movable dial plate (514) away from the fixing spring (513) is fixedly connected to a fixed insert rod (515) slidably connected to the fixing seat (50).

4. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 3, characterized in that: The positioning structure includes a positioning slot (52) on one side of the fixed base (50) and a positioning block (61) connected to the bearing outer ring fixing block (60). The positioning block (61) has a fixing hole (611) on one side that is adapted to the size of the fixing rod (515). The fixing rod (515) can be inserted into the fixing hole (611). The positioning block (61) can be locked into the positioning slot (52). The positioning block (61) and the positioning slot (52) have the same shape and are adapted to each other in size.

5. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 4, characterized in that: The bearing outer ring fixing block (60) includes a fixing block (601) for fixing the outer ring of the bearing (30) and a fixing plate (602) connected to the fixing block (601). The fixing plate (602) and the fixing block (601) are an integral structure. The positioning block (61) is installed on one side of the fixing plate (602). The bottom end of the fixing block (601) and the bearing outer ring pressing block (70) are both arc-shaped. The bottom end diameter of the fixing block (601) and the bearing outer ring pressing block (70) is smaller than the outer diameter of the bearing (30) outer ring.

6. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 5, characterized in that: An arc-shaped connecting groove (603) is provided on one side of the fixing block (601). The diameter of the arc-shaped connecting groove (603) is adapted to the outer diameter of the outer ring of the bearing (30). The thickness of the bearing (30) is adapted to the depth of the arc-shaped connecting groove (603). The outer ring of the bearing (30) can be installed inside the arc-shaped connecting groove (603).

7. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 5, characterized in that: The outer surface of the switching sleeve (40) is provided with a switching sleeve nut (41) that fits against the bearing (30). The switching sleeve nut (41) is circular in shape, and the outer diameter of the switching sleeve nut (41) is adapted to the bottom diameter of the fixing block (601).

8. The outer ring fixing structure of a switchable ball bearing with positioning function according to claim 7, characterized in that: The fork (10) has a limiting groove on its two symmetrical sides, and one side of the fixed plate (602) is in contact with the inner wall of the limiting groove.

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