Bearing section width difference measuring tool

Abstract

The invention provides a bearing section width difference measuring tool which comprises a measuring instrument and a base, an adjusting part and a detection frame are arranged on the base, the adjusting part is used for driving a bearing to be measured to rotate, and a first detection rod and a second detection rod are arranged on the detection frame. One end of the first detection rod is connected to the detection end of the measuring instrument, the other end of the first detection rod is provided with a first contact part which slidably abuts against the inner ring of the bearing to be detected, and one end of the second detection rod is provided with a second contact part which elastically abuts against the outer ring of the bearing to be detected. Aiming at the defects in the prior art, the invention provides the bearing section width difference measuring tool which is higher in adaptability and precision.

Description

Technical Field

[0001] This invention relates to the field of bearing inspection, and in particular to a tooling for measuring the width difference of bearing cross sections. Background Technology

[0002] With the continuous development of the bearing industry, the application scenarios of bearings are constantly expanding, and the standards for judging their overall performance are becoming increasingly stringent. Bearings need to be tested for many indicators, such as the cross-sectional width and the variation of the cross-sectional width. With the increasing precision requirements of bearings, these have become important testing items. However, most existing bearing inspection instruments are designed with single-item measurement as the core, and cannot achieve accurate measurement of cross-sectional width and width difference using only a single instrument. If multiple instruments are used in combination for measurement, existing equipment lacks the corresponding disassembly and assembly space and adaptation configuration, making it difficult to meet the needs of multi-parameter collaborative measurement. Furthermore, the cross-sectional width difference item has extremely high measurement accuracy requirements, and the accuracy level of ordinary calipers, micrometers, and other rapid inspection tools is far from meeting the expected measurement effect, thus failing to meet the industry's high-precision testing requirements for this indicator.

[0003] In summary, existing measuring tools are inadequate in terms of both adaptability and accuracy to meet the measurement requirements of cross-sectional width differences. Since the test results of this project directly affect the bearing's matching quality and performance, developing a new measuring device with a reasonable structure, high accuracy, and strong adaptability is of crucial significance for achieving efficient and accurate measurement of bearing cross-sectional width differences. This is also a technical problem that urgently needs to be solved in the current bearing testing field. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a bearing cross-sectional width difference measuring fixture with higher adaptability and accuracy.

[0005] To achieve the above objectives, the present invention provides a bearing cross-sectional width difference measuring fixture, comprising a measuring instrument and a base. The base is provided with an adjusting component and a testing frame. The adjusting component is used to drive the bearing under test to rotate. The testing frame is provided with a first testing rod and a second testing rod. One end of the first testing rod is connected to the testing end of the measuring instrument, and the other end of the first testing rod is provided with a first contact portion that slides against the inner ring of the bearing under test. One end of the second testing rod is provided with a second contact portion that elastically abuts against the outer ring of the bearing under test.

[0006] The advantages of the above technical solution are as follows: By setting an adjusting component and a testing frame on the base, the adjusting component drives the bearing under test to rotate, and the first contact part of the first testing rod slides against the inner ring of the bearing under test, while the elastic second contact part of the second testing rod abuts against the outer ring of the bearing under test, forming a close fit with the testing points of the inner and outer rings of the bearing under test. The elastic contact part of the second testing rod can adapt to the bearing size difference. The two ends of the first testing rod are connected to the inner ring of the bearing under test and the measuring instrument, respectively. The cooperation with the measuring instrument enables dynamic real-time detection of the cross-sectional width difference during bearing rotation. The sliding contact of the first contact part reduces the friction between it and the inner ring of the bearing under test, allowing the inner ring of the bearing under test to rotate better with the outer ring, improving the accuracy and comprehensiveness of the measurement results. The overall design is simple and efficient, and the core testing requirements can be met without complex disassembly and assembly.

[0007] The present invention can be further configured such that: a loading frame is provided on the base, a rod and a counterweight are provided on the loading frame, the rod extends to the inner diameter of the inner ring of the bearing to be tested and a rolling bearing for forming a sliding contact is provided at the end, and the counterweight can cause the rolling bearing of the rod to press against the inner diameter of the inner ring of the bearing to be tested.

[0008] By further configuring the loading frame, the rod extends to the inner diameter of the inner ring, and then forms a sliding contact with the end rolling bearing. The weight of the counterweight provides a continuous and stable clamping force. By selecting and replacing the appropriate counterweight, the inner ring can be pressed tightly onto the outer ring. During the rotation of the outer ring, the outer ring can drive the rollers and the inner ring to rotate together, avoiding the misalignment of the inner and outer rings, ensuring the consistency of the inspection benchmark, and further improving the versatility of the tooling and the accuracy of the inspection results.

[0009] The present invention can be further configured such that: the rod is oscillatingly connected to the loading frame, and the counterweight is slidably disposed on the loading frame.

[0010] With further design, the rod adopts a swing connection, allowing the rolling bearing at the end of the rod to adaptively abut against the center of the inner ring of the bearing under test. The counterweight is slidably mounted on the rod, and the torque of the rod can be adjusted by sliding the counterweight and replacing the corresponding counterweight. This allows for adjustment of the bearing to a suitable clamping force according to different inner diameter specifications and actual conditions, making it compatible with the testing needs of more types of bearings and enabling convenient adjustment.

[0011] The present invention can be further configured such that: the rolling bearing abuts against the middle part of the inner diameter of the bearing to be tested in the axial direction; the first contact part and the second contact part abut against one side of the inner and outer rings of the bearing to be tested in the axial direction, respectively; and the base is provided with a limiting member that abuts against the other side of the bearing to be tested.

[0012] With further configuration, the rolling bearing abuts against the axial center of the inner ring of the bearing under test, which can radially center the inner ring and prevent the inner ring from tilting due to uneven force, ensuring the coaxiality of the inner ring during rotation. The limiting component abuts against the first contact part and the second contact part on both sides of the bearing axially to form bidirectional axial positioning, preventing the bearing under test from tilting or wobbling, ensuring the stability of the bearing under test, and avoiding interference of positioning deviation with the measurement results.

[0013] The present invention can be further configured such that: the testing frame includes an elastically telescopic upright, the second testing rod and the measuring instrument are both mounted on the upright, and the upright is reset in the direction that causes the second contact portion on the second testing rod to press against the outer ring of the bearing to be tested.

[0014] Through further design, a flexible telescopic upright is used to continuously apply a clamping force towards the outer ring of the bearing under test to the second detection rod, ensuring that the contact part is in the corresponding position. At the same time, the second detection rod and the measuring instrument are also integrated on the upright, ensuring that the relative positions of the first detection rod and the measuring instrument are fixed, thus ensuring the accuracy of the measurement signal acquisition. In addition, the flexible telescopic structure can achieve stable contact with the outer ring of bearings of different specifications without complicated adjustments, ensuring stability and providing reliable support for accurate measurement.

[0015] The present invention can be further configured such that the first contact portion is composed of a ball bearing at the other end of the first detection rod.

[0016] With further design, the first contact part adopts a ball structure, which greatly reduces the resistance when the inner ring rotates, allowing the inner ring to move better with the outer ring. In addition, the spherical balls can also adapt to slight posture changes or positional deviations of the inner ring during bearing rotation, always maintaining a stable fit with the inner ring and ensuring the stability of the test.

[0017] The present invention can be further configured such that: a transmission belt is provided on the base, the adjusting component is composed of a roller, the surface of the adjusting component is provided with a groove of mesh cloth, the transmission belt engages with the surface of the adjusting component, and both the transmission belt and the bearing to be tested abut against the adjusting component.

[0018] Through further design, the coordinated operation of the roller-type adjusting component, the mesh groove structure, and the transmission belt enables transmission to drive the rotation and position adjustment of the bearing under test. Furthermore, the mesh groove on the surface of the adjusting component significantly increases the contact friction with the transmission belt and the bearing under test. Combined with the meshing transmission between the transmission belt and the roller, slippage of the transmission and the bearing under test is effectively avoided, ensuring that the adjusting component can drive the bearing to rotate at a uniform and stable speed. This provides a stable motion basis for the dynamic continuous detection of cross-sectional width differences.

[0019] The present invention can be further configured such that: there are two adjusting members arranged at intervals, and the detection frame is arranged between the two adjusting members.

[0020] With further design, the two spaced-apart adjustment components form a symmetrical two-point support structure, which can lift the bearing under test from both sides to ensure the stability of the bearing placement. The test frame is placed between the two adjustment components, so that the first contact part and the second contact part of the first test rod and the second test rod can better abut against the inner ring and outer ring of the bearing under test. The two adjustment components transmit power synchronously, ensuring that the bearing is subjected to uniform force and rotates more smoothly. The test component and the support component can not interfere with each other, which also facilitates operation and maintenance.

[0021] The present invention can be further configured such that: the base has a guide groove in the middle, and the detection frame slides at the guide groove.

[0022] Through further design, the sliding fit between the guide groove and the testing frame enables the adjustment of the testing position and also limits the adjustment position, making it convenient to handle bearings of different specifications and ensuring stability. Attached Figure Description

[0023] Figure 1 This is a perspective view of an embodiment of the present invention; Figure 2 This is a top view of an embodiment of the present invention; Figure 3 This is an embodiment of the present invention. Figure 2 Sectional view at point AA; Figure 4 This is a schematic diagram illustrating the cooperation between the base and the adjusting component in an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the cooperation between the testing frame and the bearing to be tested in an embodiment of the present invention; Figure 6 This is a schematic diagram of the loading frame structure in an embodiment of the present invention; The components include: measuring instrument 1; base 2; limiting component 21; transmission belt 22; guide groove 23; adjusting component 3; detection frame 4; first detection rod 41; first contact part 411; second detection rod 42; second contact part 421; upright rod 43; bearing to be tested 5; inner ring 51; outer ring 52; loading frame 6; rod part 61; counterweight block 62; and rolling bearing 63. Detailed Implementation

[0024] An embodiment of the bearing cross-sectional width difference measuring fixture of the present invention is as follows: Figure 1-5As shown: It includes a measuring instrument 1 and a base 2. The base 2 is provided with an adjusting component 3 and a testing frame 4. The adjusting component 3 is used to drive the bearing 5 under test to rotate. The testing frame 4 is provided with a first testing rod 41 and a second testing rod 42. One end of the first testing rod 41 is connected to the testing end of the measuring instrument 1, and the other end of the first testing rod 41 is provided with a first contact part 411 that slides against the inner ring 51 of the bearing 5 under test. One end of the second testing rod 42 is provided with a second contact part 421 that elastically abuts against the outer ring 52 of the bearing 5 under test.

[0025] The base 2 is also provided with a loading frame 6, on which a rod 61 and a counterweight 62 are provided. The rod 61 extends to the inner diameter of the inner ring 51 of the bearing to be tested and is provided with a rolling bearing 63 at the end for forming a sliding contact. The counterweight 62 can cause the rolling bearing 63 of the rod 61 to press against the inner diameter of the inner ring 51 of the bearing to be tested.

[0026] The rod 61 is oscillatingly connected to the loading frame 6, and the counterweight 62 is slidably disposed on the loading frame 6.

[0027] The rolling bearing 63 abuts against the middle of the inner diameter of the inner ring 51 of the bearing under test in the axial direction. The first contact part 411 and the second contact part 421 abut against one side of the inner ring 51 and the outer ring 52 of the bearing under test in the axial direction, respectively. The base 2 is provided with a limiting member 21 that abuts against the other side of the bearing under test 5.

[0028] The testing frame 4 includes an elastically telescopic upright 43. The second testing rod 42 and the measuring instrument 1 are both mounted on the upright 43. The upright 43 is reset in the direction that causes the second contact part 421 on the second testing rod 42 to press against the outer ring 52 of the bearing to be tested.

[0029] The first contact portion 411 is composed of a ball bearing at the other end of the first detection rod 41.

[0030] The base 2 is provided with a transmission belt 22, the adjusting member 3 is composed of rollers, the surface of the adjusting member 3 is provided with grooves of mesh cloth, the transmission belt 22 meshes with the surface of the adjusting member 3, and the transmission belt 22 and the bearing 5 to be tested both abut against the adjusting member 3.

[0031] The adjusting member 3 is two and spaced apart, and the detection frame 4 is located between the two adjusting members 3.

[0032] The base 2 has a guide groove 23 in the middle, and the detection frame 4 slides at the guide groove 23.

[0033] The above examples are merely one preferred embodiment of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included within the protection scope of the present invention.

Claims

1. A fixture for measuring the width difference of a bearing cross-section, comprising a measuring instrument, characterized in that: The device includes a base, on which an adjusting component and a testing frame are mounted. The adjusting component is used to drive the bearing under test to rotate. The testing frame is equipped with a first testing rod and a second testing rod. One end of the first testing rod is connected to the testing end of the measuring instrument, and the other end of the first testing rod is provided with a first contact portion that slides against the inner ring of the bearing under test. One end of the second testing rod is provided with a second contact portion that elastically abuts against the outer ring of the bearing under test.

2. The bearing cross-sectional width difference measuring fixture according to claim 1, characterized in that: The base is also provided with a loading frame, on which a rod and a counterweight are provided. The rod extends to the inner diameter of the inner ring of the bearing to be tested and has a rolling bearing at its end for forming a sliding contact. The counterweight can cause the rolling bearing of the rod to press against the inner diameter of the inner ring of the bearing to be tested.

3. The bearing cross-sectional width difference measuring fixture according to claim 2, characterized in that: The rod is oscillatingly connected to the loading frame, and the counterweight is slidably mounted on the loading frame.

4. The bearing cross-sectional width difference measuring fixture according to claim 2 or 3, characterized in that: The rolling bearing abuts against the middle of the inner diameter of the bearing under test in the axial direction. The first contact part and the second contact part abut against one side of the inner and outer rings of the bearing under test in the axial direction, respectively. The base is provided with a limiting member that abuts against the other side of the bearing under test.

5. The bearing cross-sectional width difference measuring fixture according to claim 1, 2, or 3, characterized in that: The testing frame includes a resiliently telescopic upright, and the second testing rod and measuring instrument are both mounted on the upright. The upright is reset in the direction that causes the second contact part on the second testing rod to press against the outer ring of the bearing to be tested.

6. The bearing cross-sectional width difference measuring fixture according to claim 5, characterized in that: The first contact portion is composed of a ball bearing at the other end of the first detection rod.

7. The bearing cross-sectional width difference measuring fixture according to claim 1, 2, or 3, characterized in that: The base is provided with a transmission belt, the adjusting component is composed of rollers, the surface of the adjusting component is provided with grooves of mesh fabric, the transmission belt engages with the surface of the adjusting component, and both the transmission belt and the bearing to be tested abut against the adjusting component.

8. The bearing cross-sectional width difference measuring fixture according to claim 7, characterized in that: The adjustment components are two and spaced apart, and the detection frame is located between the two adjustment components.

9. The bearing cross-sectional width difference measuring fixture according to claim 7, characterized in that: The base has a guide groove in the middle, and the detection frame slides along the guide groove.

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