Bearing ring measuring tool
By designing a bearing ring measuring fixture with a Y-shaped mounting bracket and adjustment mechanism, the problem of aligning the dial indicator probe with the bearing ring in the existing technology has been solved, realizing the accurate measurement of the inner and outer diameters of the bearing ring and improving the accuracy and consistency of the measurement.
Patent Information
- Application Number
- CN202520696374.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-14
AI Technical Summary
In existing bearing measuring instruments, the clamping method of the sliding contact makes it difficult to ensure that the dial indicator probe is aligned with the bearing ring, resulting in measurement errors.
A bearing ring measuring fixture is adopted, including a Y-shaped mounting bracket, a measuring swing arm, a measuring seat, and an adjustment mechanism. The fixture forms a three-point positioning with the dial indicator probe through a sliding guide wheel, and the adjustment mechanism ensures that the dial indicator probe is always centered. It is suitable for positioning and clamping bearing rings of different sizes.
It achieves precise alignment between the dial indicator probe and the bearing ring, ensuring measurement accuracy, and can simultaneously measure the inner and outer diameters of the bearing ring, reducing measurement errors.
Smart Images
Figure CN223940172U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing measurement technology, specifically a bearing ring measuring fixture. Background Technology
[0002] As a core component of mechanical equipment, bearings directly determine the accuracy, lifespan, and reliability of the transmission system. During the machining of bearing rings, the rings typically need to be placed on a bearing measuring instrument specifically designed to measure the bearing's outer diameter. Measuring bearing rings requires the use of clamping fixtures to hold and secure them.
[0003] The outer diameter of the bearing race is detected using the contacts and dial indicator probe on the bearing measuring instrument. However, existing bearing measuring instruments usually use two sliding contacts on the left and lower sides to form a clamping fixture to fix the bearing race, and then use the dial indicator probe on the top for measurement. However, the above-mentioned clamping method of sliding contacts makes it difficult to ensure that the dial indicator probe is aligned with the bearing race, resulting in measurement errors by the dial indicator probe. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a bearing ring measuring fixture, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A bearing ring measuring fixture includes a measuring platform for placing the bearing rings. A fixture assembly is mounted on the measuring platform. The fixture assembly includes a Y-shaped mounting bracket, two measuring rods, a measuring seat, and an adjustment mechanism. The Y-shaped mounting bracket is fixed to the measuring platform. The two measuring rods are symmetrically arranged and rotatably connected to the front side of the Y-shaped mounting bracket. A sliding guide wheel is rotatably connected to the upper end of each measuring rod. The measuring seat is located on the rear side of the Y-shaped mounting bracket and centrally positioned on the axis of symmetry between the two measuring rods. A positioning clamp for mounting a dial indicator probe is fixed on the measuring seat.
[0009] Preferably, the adjustment mechanism includes a drive beam, a meshing gear, and a reversing gear. The drive beam has symmetrically arranged transmission racks on both sides. The meshing gear meshes with the transmission racks, and the meshing gear meshes with the reversing gear. The end of the measuring pendulum away from the sliding guide wheel is fixed to the reversing gear.
[0010] Preferably, an opening and closing nut is fixed on the Y-shaped mounting bracket, an opening and closing screw is rotatably connected to the end of the drive beam, the opening and closing nut is threadedly sleeved on the opening and closing screw, and a knob is fixed to the end of the opening and closing screw.
[0011] Preferably, a limiting groove is provided in the middle of the drive beam, and a guide post is provided on the Y-shaped mounting bracket, the guide post being slidably inserted into the limiting groove.
[0012] Preferably, the lower end of the measuring base is fixed with a reversing shaft, the Y-shaped mounting bracket is provided with a reversing hole, the reversing shaft is rotatably installed in the reversing hole, the measuring base is provided with a locking screw hole, the locking screw hole is threadedly connected to a locking screw rod, and the front and rear sides of the reversing hole are provided with locking holes corresponding to the locking screw hole, and the locking screw rod passes through and is engaged in the locking hole.
[0013] Preferably, the end of the measuring pendulum is provided with a guide rod, the sliding guide wheel is rotatably mounted on the top of the guide rod, the measuring platform is symmetrically provided with sliding arc grooves, the guide rod slides through the sliding arc grooves, and the sliding guide wheel is slidably disposed on the upper side of the measuring platform.
[0014] (III) Beneficial Effects
[0015] This utility model provides a bearing ring measuring fixture. It has the following advantages:
[0016] 1. In this utility model, the sliding guide wheel on the measuring pendulum rod and the dial indicator probe mounted on the measuring base form a three-point positioning. By rotating the knob, the drive beam can be adjusted to slide within the Y-shaped mounting frame, thereby controlling the synchronous opening and closing of the two measuring pendulum rods. The measuring radius of the sliding guide wheel and the dial indicator probe can be changed to adapt to the positioning and clamping of bearing rings of different sizes, and the dial indicator probe is always kept centered and directly above the bearing ring, ensuring the accuracy of the measurement.
[0017] 2. In this utility model, the measuring group and the Y-shaped mounting bracket can be unlocked by locking the screw, so that the measuring group can be rotated inward or outward. By coordinating with the displacement change of the measuring pendulum rod opening and closing synchronously, the inner and outer diameters of the bearing ring can be measured. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a bearing ring measuring fixture according to the present invention;
[0019] Figure 2 This is a schematic diagram of the tooling components in this utility model.
[0020] In the diagram: 1. Measuring platform; 2. Y-shaped mounting bracket; 3. Measuring swing arm; 4. Measuring seat; 5. Guide rod; 6. Sliding guide wheel; 7. Positioning clamp; 8. Drive beam; 9. Meshing gear; 10. Reversing gear; 11. Transmission rack; 12. Opening nut; 13. Opening screw; 14. Reversing shaft; 15. Locking screw. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0022] This utility model embodiment provides a bearing ring measuring fixture, such as... Figure 1-2 As shown, a measuring platform 1 for placing bearing races is included. A tooling assembly is mounted on the measuring platform 1, comprising a Y-shaped mounting bracket 2, two measuring rods 3, a measuring seat 4, and an adjustment mechanism. The Y-shaped mounting bracket 2 includes an integrally formed straight beam and two symmetrically extending outward-facing rotating parts. The Y-shaped mounting bracket 2 is fixed to the measuring platform 1. The two measuring rods 3 are rotatably connected to the rotating parts of the Y-shaped mounting bracket. Guide rods 5 are provided at the ends of the measuring rods 3, and sliding guide wheels 6 are rotatably connected to the tops of the guide rods 5. The measuring platform 1 has symmetrically formed sliding arc grooves, through which the guide rods 5 slide. The sliding guide wheels 6 are slidably positioned on the upper side of the measuring platform 1. The measuring seat 4 is located on the straight beam of the Y-shaped mounting bracket 2, centrally positioned on the symmetrical axis between the two measuring rods 3. A positioning clamp 7 for mounting a dial indicator probe is fixed on the measuring seat 4. An angle sensor is mounted on each measuring rod 3.
[0023] like Figure 2 As shown, the adjustment mechanism includes a drive beam 8, a meshing gear 9, and a reversing gear 10. A limiting groove is provided in the middle of the drive beam 8. A guide post is provided on the Y-shaped mounting bracket 2. The guide post slides through the limiting groove. A transmission rack 11 is symmetrically provided on both sides of the drive beam 8. Two sets of meshing gears 9 and reversing gears 10 are provided, respectively on the left and right sides of the drive beam 8. The meshing gear 9 meshes with the transmission rack 11 and the meshing gear 9 meshes with the reversing gear 10. Several spline grooves are provided at the upper and lower ends of the reversing gear 10. A positioning groove is provided on the measuring swing rod 3. Spline protrusions that mate with the spline grooves are provided on the upper and lower side walls of the positioning groove. The spline protrusions are snapped and fixed on the reversing gear 10.
[0024] The Y-shaped mounting bracket 2 is fixed with an opening and closing nut 12, and the end of the drive beam 8 is rotatably connected to an opening and closing screw 13. The opening and closing nut 12 is threadedly sleeved on the opening and closing screw 13, and a knob is fixed to the end of the opening and closing screw 13.
[0025] The lower end of the measuring base 4 is fixed with a reversing shaft 14. The Y-shaped mounting bracket 2 is provided with a reversing hole. The reversing shaft 14 is rotatably installed in the reversing hole. The measuring base 4 is provided with a locking screw hole. The locking screw hole is threadedly connected to a locking screw 15. Locking holes corresponding to the locking screw hole are provided on the front and rear sides of the reversing hole. The locking screw 13 passes through and is engaged in the locking hole.
[0026] Working principle:
[0027] In this invention, when it is necessary to measure the inner diameter of the bearing ring, rotating the locking screw 13 can unlock the measuring seat 4 and the Y-shaped mounting bracket 2. Rotating the measuring seat 4 allows the dial indicator probe mounted on the measuring seat 4 to face outward. Rotating the knob causes the opening and closing screw 13 to rotate, and through the threaded engagement, the opening and closing screw 13 can move back and forth relative to the opening and closing nut 12 to push the drive beam 8 to slide. During this process, through the meshing relationship of the transmission rack 11, the meshing gear 9, and the reversing gear 10, the two measuring swing arms 3 open and close synchronously in opposite directions. During the opening and closing process, the central axis of the two sliding guide wheels 6 is always aligned with the measuring seat 4, so that the dial indicator probe on the measuring seat 4 always touches the highest point of the side wall of the bearing ring, thus maintaining the accuracy of the measurement point.
[0028] The Y-shaped mounting bracket 2 is configured in a Y-shape, so that the pivot of the measuring pendulum 3 is located on the straight beam of the Y-shaped mounting bracket 2, which is eccentrically set with respect to the central axis of the flipping part. Therefore, during the rotation of the measuring pendulum 3, the diameter of the ring where the two sliding guide wheels 6 and the dial indicator probe form a three-point positioning will change. That is, the rotation of the measuring pendulum 3 can cause the sliding guide wheels 6 to abut against the inner wall of the bearing ring. The extension angle of the positioning bearing ring of the measuring pendulum 3 is read by the angle sensor. The inner diameter of the bearing ring can be calculated by using the known length of the measuring pendulum 3, the extension angle of the measuring pendulum 3, and the known length of the straight beam of the Y-shaped mounting bracket 2. The machining error of the bearing ring can be read by the dial indicator probe when the bearing ring is rotated.
[0029] Similarly, when it is necessary to measure the outer diameter of the bearing ring, the measuring base 4 is flipped so that the dial indicator probe installed on the measuring base 4 can face inward, and the measuring swing rod 3 is adjusted so that the sliding guide wheel 6 abuts against the outer wall of the bearing sleeve. This can also measure and calculate the outer diameter dimension and outer diameter machining error of the bearing ring.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bearing ring measuring fixture, comprising a measuring platform for placing bearing rings, characterized in that: The measuring platform is equipped with a tooling assembly, which includes a Y-shaped mounting frame, two measuring pendulum rods, a measuring seat, and an adjustment mechanism. The Y-shaped mounting frame is fixed to the measuring platform. The two measuring pendulum rods are symmetrically arranged and rotatably connected to the front side of the Y-shaped mounting frame. The upper end of each measuring pendulum rod is rotatably connected to a sliding guide wheel. The measuring seat is located on the rear side of the Y-shaped mounting frame and is centrally located on the axis of symmetry between the two measuring pendulum rods. A positioning clamp for mounting a dial indicator probe is fixed on the measuring seat.
2. The bearing ring measuring fixture according to claim 1, characterized in that: The adjustment mechanism includes a drive beam, a meshing gear, and a reversing gear. The drive beam has symmetrical transmission racks on both sides. The meshing gear meshes with the transmission racks, and the meshing gear meshes with the reversing gear. The end of the measuring pendulum away from the sliding guide wheel is fixed to the reversing gear.
3. The bearing ring measuring fixture according to claim 2, characterized in that: A hinge nut is fixed on the Y-shaped mounting bracket, and a hinge screw is rotatably connected to the end of the drive beam. The hinge nut is threadedly sleeved on the hinge screw, and a knob is fixed to the end of the hinge screw.
4. The bearing ring measuring fixture according to claim 3, characterized in that: A limiting groove is provided in the middle of the drive beam, and a guide post is provided on the Y-shaped mounting frame. The guide post slides through the limiting groove.
5. The bearing ring measuring fixture according to claim 4, characterized in that: The lower end of the measuring base is fixed with a reversing shaft. The Y-shaped mounting bracket has a reversing hole. The reversing shaft is rotatably installed in the reversing hole. The measuring base has a locking screw hole. The locking screw hole is threadedly connected to a locking screw. Locking holes corresponding to the locking screw hole are provided on the front and rear sides of the reversing hole. The locking screw passes through and is engaged in the locking hole.
6. The bearing ring measuring fixture according to claim 5, characterized in that: The measuring pendulum is provided with a guide rod at its end, the sliding guide wheel is rotatably mounted on the top of the guide rod, the measuring platform is symmetrically provided with sliding arc grooves, the guide rod slides through the sliding arc grooves, and the sliding guide wheel is slidably positioned on the upper side of the measuring platform.