Uniform-section thin-wall bearing inner ring runout measuring device
Through the innovative design of a three-jaw chuck and connecting rod structure, simultaneous measurement of the inner ring of a thin-walled bearing with a uniform cross-section in both the X and Y axes is achieved, solving the problem of low measurement efficiency in existing technologies and improving measurement efficiency.
Patent Information
- Application Number
- CN202423215512.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing thin-walled bearing inner ring runout measuring devices can only measure the X-axis or Y-axis direction separately, resulting in low measurement efficiency.
Design a device for measuring the runout of the inner ring of a thin-walled bearing with a constant cross-section. The bearing is held by a three-jaw chuck and combined with connecting rods on the left and right sides. The positions of the dial indicators are adjusted to achieve simultaneous measurement of the inner ring of the bearing in the X and Y axes.
It enables simultaneous measurement of runout in the X and Y axes of the bearing inner ring, improving measurement efficiency.
Smart Images
Figure CN223500302U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing measurement technology, and in particular to a device for measuring the runout of the inner ring of a thin-walled bearing with a constant cross-section. Background Technology
[0002] Constant cross-section thin-walled bearings are a special type of bearing characterized by maintaining a constant cross-sectional width and thickness regardless of changes in the bearing's inner diameter. They typically offer the following advantages: lightweight (due to their thinner walls, they are relatively lightweight); space-saving (allowing for a larger rotational diameter within a limited space); high precision (suitable for applications requiring high rotational accuracy); low friction (designed to achieve low starting and running friction); and flexibility (their consistent cross-sectional dimensions allow them to adapt to various application requirements). These bearings are widely used in robotics, medical equipment, office automation equipment, and precision instruments, particularly in applications with stringent weight and space constraints.
[0003] In the existing technology, some thin-walled bearing inner ring runout measuring devices can only measure the bearing inner ring in the X-axis direction or only in the Y-axis direction during a single measurement operation, which increases the measurement steps and reduces the overall measurement efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section, which can simultaneously measure the inner ring of the bearing in both the X-axis and Y-axis directions, thereby improving the overall measurement efficiency.
[0005] To achieve the above objectives, a device for measuring the runout of the inner ring of a thin-walled bearing with a constant cross-section is provided, including a worktable, a recording table fixedly connected to the upper left side of the worktable, a three-jaw chuck fixedly connected to the upper center of the worktable, and a bearing body disposed above the three-jaw chuck.
[0006] The workbench is fixedly connected to bases on its left and right rear sides. A connecting rod is fixedly connected to the right side of the left base, and a top plate is fixedly connected to the upper end of the connecting rod. A lead screw is rotatably connected to the left side of the base, and a knob is fixedly connected to the upper end of the lead screw. A lifting plate is threadedly connected to the upper part of the lead screw. A first connecting rod is rotatably connected to the left side of the lifting plate. A second connecting rod is rotatably connected to the front end of the first connecting rod. A ball joint is fixedly connected to the other end of the second connecting rod. A gripper is fixedly connected to the left side of the ball joint, and a tightening bolt is threadedly connected to the left side of the gripper. A dial indicator is held inside the gripper.
[0007] According to the aforementioned device for measuring the runout of the inner ring of a thin-walled bearing with uniform cross-section, a connecting rod is fixedly connected to the right side of the base, a top plate is fixedly connected to the upper end of the connecting rod, a lead screw is rotatably connected to the left side of the base, a knob is fixedly connected to the upper end of the lead screw, a lifting plate is threadedly connected to the upper part of the lead screw, a first connecting rod is rotatably connected to the right side of the lifting plate, a third connecting rod is rotatably connected to the front end of the first connecting rod, a connecting block is rotatably connected to the right side of the third connecting rod, a clamp is fixedly connected to the right side of the connecting block, a tightening bolt is threadedly connected to the right side of the clamp, and a dial indicator is held inside the clamp.
[0008] According to the aforementioned device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section, the lifting plate passes through the interior of the connecting rod, and the lifting plate is slidably connected to the connecting rod.
[0009] According to the aforementioned device for measuring the runout of the inner ring of a thin-walled bearing with uniform cross-section, the three-jaw chuck includes a housing, a handle rotatably connected to the front right side of the housing, a worm gear fixedly connected to the rear of the handle, a worm wheel meshing with the left side of the worm gear, a flat threaded disc fixedly connected above the worm wheel, and a jaw body threadedly connected above the flat threaded disc.
[0010] According to the aforementioned device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section, the worm gear is located inside the housing and is rotatably connected to the housing.
[0011] According to the aforementioned device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section, the worm gear is located inside the housing and is rotatably connected to the housing.
[0012] According to the aforementioned device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section, the claw body is located above the housing body, and the claw body is slidably connected to the housing body.
[0013] This utility model has the following beneficial effects:
[0014] 1. Compared with the prior art, this equal-section thin-walled bearing inner ring runout measuring device achieves the clamping of the bearing body by the synchronous movement of the three jaws towards the center. By adjusting the distance between the three jaws, the three-jaw chuck can clamp bearings with diameters within a certain range, thereby enabling the device to measure the inner ring runout of bearings with diameters within a certain range.
[0015] 2. Compared with the prior art, this uniform cross-section thin-walled bearing inner ring runout measuring device adjusts the positions of the left first connecting rod, the second connecting rod, the ball head seat, and the gripper so that the measuring end of the left dial indicator abuts against the inner wall of the bearing inner ring. Simultaneously, by adjusting the positions of the right first connecting rod, the third connecting rod, and the connecting block, the measuring end of the right dial indicator abuts against the upper surface of the bearing inner ring. This combination enables the device to simultaneously measure the bearing inner ring runout in both the X and Y axes of the bearing body, thus improving measurement efficiency.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a perspective view of a uniform cross-section thin-walled bearing inner ring runout measuring device according to the present invention;
[0019] Figure 2 This is an exploded view of the internal structure of the three-jaw chuck of the equal-section thin-walled bearing inner ring runout measuring device of this utility model;
[0020] Figure 3 This is a perspective view of a dial indicator for a uniform cross-section thin-walled bearing inner ring runout measuring device according to this utility model.
[0021] Legend:
[0022] 1. Workbench; 2. Recording table; 3. Three-jaw chuck; 4. Bearing body; 5. Base; 6. Connecting rod; 7. Top plate; 8. Lead screw; 9. Knob; 10. Lifting plate; 11. First connecting rod; 12. Second connecting rod; 13. Ball head seat; 14. Clamping jaw; 15. Tightening bolt; 16. Dial indicator; 17. Third connecting rod; 18. Connecting block;
[0023] 31. Chamber body; 32. Crank handle; 33. Worm gear; 34. Worm wheel; 35. Flat threaded disc; 36. Claw body. Detailed Implementation
[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0025] Reference Figure 1-3This utility model discloses a device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section. It includes a worktable 1, a recording table 2 fixedly connected to the upper left side of the worktable 1, and a three-jaw chuck 3 fixedly connected to the upper center of the worktable 1. The three-jaw chuck 3 includes a housing 31, a crank 32 rotatably connected to the front right side of the housing 31, a worm 33 fixedly connected to the rear of the crank 32, the worm 33 being located inside the housing 31 and rotatably connected to the housing 31, a worm wheel 34 meshing with the left side of the worm 33, the worm wheel 34 being located inside the housing 31 and rotatably connected to the housing 31, a flat threaded disc 35 fixedly connected above the worm wheel 34, and a claw 36 threadedly connected above the flat threaded disc 35, the claw 36 being located above the housing 31 and slidably connected to the housing 31.
[0026] In the above structure, turning the crank 32 causes the worm 33 to rotate. A worm wheel 34 meshes with the left side of the worm 33, causing the worm wheel 34 to rotate. A flat threaded disc 35 is fixedly connected above the worm wheel 34, causing the worm wheel 34 to drive the flat threaded disc 35 to rotate synchronously with the worm 34. A claw body 36 is threadedly connected to the top of the flat threaded disc 35. There are three claw bodies 36, and the angles between the different claw bodies 36 are the same, so that the flat threaded disc 35 drives the claw bodies 36 to move synchronously towards the center or synchronously outward.
[0027] By moving the three jaws 36 synchronously toward the center, the jaws 36 clamp the bearing body 4. By adjusting the distance between the three jaws 36, the three-jaw chuck 3 can clamp bearings with diameters within a certain range, thereby enabling the device to measure the inner ring runout of bearings with diameters within a certain range.
[0028] A bearing body 4 is mounted above the three-jaw chuck 3. Bases 5 are fixedly connected to the left and right sides of the rear of the worktable 1. A connecting rod 6 is fixedly connected to the right side of the left base 5. A top plate 7 is fixedly connected to the upper end of the connecting rod 6. A lead screw 8 is rotatably connected to the left side of the base 5. A knob 9 is fixedly connected to the upper end of the lead screw 8. A lifting plate 10 is threadedly connected to the upper part of the lead screw 8. A first connecting rod 11 is rotatably connected to the left side of the lifting plate 10. A second connecting rod 12 is rotatably connected to the front end of the first connecting rod 11. A ball joint 13 is fixedly connected to the other end of the second connecting rod 12. A jaw 14 is fixedly connected to the left side of the ball joint 13. A tightening bolt 15 is threadedly connected to the left side of the jaw 14. The jaw 14 holds a 1 / 2000 ppm clamp inside. Table 16 shows that a connecting rod 6 is fixedly connected to the right side of the right base 5, and a top plate 7 is fixedly connected to the upper end of the connecting rod 6. A lead screw 8 is rotatably connected to the left side of the base 5, and a knob 9 is fixedly connected to the upper end of the lead screw 8. A lifting plate 10 is threadedly connected to the upper part of the lead screw 8. The lifting plate 10 passes through the interior of the connecting rod 6 and is slidably connected to the connecting rod 6. A first connecting rod 11 is rotatably connected to the right side of the lifting plate 10. A third connecting rod 17 is rotatably connected to the front end of the first connecting rod 11. A connecting block 18 is rotatably connected to the right side of the third connecting rod 17. A gripper 14 is fixedly connected to the right side of the connecting block 18. A tightening bolt 15 is threadedly connected to the right side of the gripper 14. A dial indicator 16 is held inside the gripper 14.
[0029] In the above structure, rotating the knob 9 causes the lead screw 8 to rotate. The upper part of the lead screw 8 is threadedly connected to the lifting plate 10, and the other side of the lifting plate 10 passes through the interior of the connecting rod 6, so that the lead screw 8 drives the lifting plate 10 to move up and down. By adjusting the height of the lifting plate 10, the measuring personnel can more easily make the measuring end of the dial indicator 16 contact the bearing body 4.
[0030] A first connecting rod 11 is rotatably connected to the left side of the left lifting plate 10. A second connecting rod 12 is rotatably connected to the front end of the first connecting rod 11. A ball head seat 13 is fixedly connected to the other end of the second connecting rod 12. A clamp 14 is fixedly connected to the left side of the ball head seat 13, and a dial indicator 16 is held inside the clamp 14. This allows the measuring personnel to adjust the position of the left first connecting rod 11, the second connecting rod 12, the ball head seat 13, and the clamp 14 so that the measuring end of the dial indicator 16 abuts against the inner wall of the bearing inner ring, thereby allowing the dial indicator 16 to measure the runout of the bearing inner ring in the X-axis direction.
[0031] A first connecting rod 11 is rotatably connected to the right side of the right lifting plate 10. A third connecting rod 17 is rotatably connected to the front end of the first connecting rod 11. A connecting block 18 is rotatably connected to the right side of the third connecting rod 17. A gripper 14 is fixedly connected to the right side of the connecting block 18. A dial indicator 16 is held inside the gripper 14. By adjusting the position of the first connecting rod 11, the third connecting rod 17, and the connecting block 18, the measuring end of the dial indicator 16 is brought into contact with the upper surface of the bearing inner ring, thereby allowing the dial indicator 16 to measure the runout of the bearing inner ring in the Y-axis direction.
[0032] Working Principle: In use, this type of equal-section thin-walled bearing inner ring runout measuring device first clamps the bearing body 4 above the three-jaw chuck 3. By adjusting the positions of the left first connecting rod 11, second connecting rod 12, ball head seat 13, and jaw 14, the measuring end of the left dial indicator 16 is brought into contact with the inner wall of the bearing inner ring, allowing the left dial indicator 16 to measure the runout in the X-axis direction. Similarly, by adjusting the positions of the right first connecting rod 11, third connecting rod 17, and connecting block 18, the measuring end of the right dial indicator 16 is brought into contact with the upper surface of the bearing inner ring, allowing the right dial indicator 16 to measure the runout in the Y-axis direction. Then, the bearing inner ring is manually moved, thus enabling the device to simultaneously measure the runout of the bearing inner ring in both the X-axis and Y-axis directions of the bearing body 4.
[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section, characterized in that, Includes a workbench (1), a recording table (2) is fixedly connected to the upper left side of the workbench (1), a three-jaw chuck (3) is fixedly connected to the upper middle part of the workbench (1), and a bearing body (4) is provided above the three-jaw chuck (3). The workbench (1) is fixedly connected to the left and right sides of the rear. A connecting rod (6) is fixedly connected to the right side of the left side of the base (5). A top plate (7) is fixedly connected to the upper end of the connecting rod (6). A lead screw (8) is rotatably connected to the left side of the base (5). A knob (9) is fixedly connected to the upper end of the lead screw (8). A lifting plate (10) is threadedly connected to the upper part of the lead screw (8). A first connecting rod (11) is rotatably connected to the left side of the lifting plate (10). A second connecting rod (12) is rotatably connected to the front end of the first connecting rod (11). A ball head seat (13) is fixedly connected to the other end of the second connecting rod (12). A gripper (14) is fixedly connected to the left side of the ball head seat (13). A tightening bolt (15) is threadedly connected to the left side of the gripper (14). A dial indicator (16) is held inside the gripper (14).
2. The device for measuring the runout of the inner ring of a thin-walled bearing with uniform cross-section according to claim 1, characterized in that, A connecting rod (6) is fixedly connected to the right side of the base (5) on the right side. A top plate (7) is fixedly connected to the upper end of the connecting rod (6). A lead screw (8) is rotatably connected to the left side of the base (5). A knob (9) is fixedly connected to the upper end of the lead screw (8). A lifting plate (10) is threadedly connected to the upper part of the lead screw (8). A first connecting rod (11) is rotatably connected to the right side of the lifting plate (10). A third connecting rod (17) is rotatably connected to the front end of the first connecting rod (11). A connecting block (18) is rotatably connected to the right side of the third connecting rod (17). A gripper (14) is fixedly connected to the right side of the connecting block (18). A tightening bolt (15) is threadedly connected to the right side of the gripper (14). A dial indicator (16) is held inside the gripper (14).
3. The device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section according to claim 1, characterized in that, The lifting plate (10) passes through the interior of the connecting rod (6), and the lifting plate (10) is slidably connected to the connecting rod (6).
4. The device for measuring the runout of the inner ring of a thin-walled bearing with a uniform cross-section according to claim 1, characterized in that, The three-jaw chuck (3) includes a housing (31), a crank (32) is rotatably connected to the front right side of the housing (31), a worm (33) is fixedly connected to the rear of the crank (32), a worm wheel (34) is engaged on the left side of the worm (33), a flat threaded disc (35) is fixedly connected above the worm wheel (34), and a claw body (36) is threadedly connected above the flat threaded disc (35).
5. The device for measuring the runout of a thin-walled bearing inner ring with uniform cross-section according to claim 4, characterized in that, The worm gear (33) is located inside the housing (31), and the worm gear (33) is rotatably connected to the housing (31).
6. The device for measuring the runout of a thin-walled bearing inner ring with uniform cross-section according to claim 4, characterized in that, The worm gear (34) is located inside the housing (31), and the worm gear (34) is rotatably connected to the housing (31).
7. The device for measuring the runout of a thin-walled bearing inner ring with uniform cross-section according to claim 4, characterized in that, The claw body (36) is located above the housing body (31), and the claw body (36) is slidably connected to the housing body (31).