Bearing radial runout detection v-block guide

Abstract

The utility model discloses bearing radial runout detection V -shaped frame guiding device, especially related to shaft parts detection technical field, including the connecting frame, the outside of connecting frame is provided with a plurality of direction detection components, the direction detection component includes the limiting cylinder of setting at the outside of connecting frame, the middle portion sliding connection of limiting cylinder has the slide column. The utility model discloses through adopting the multiple direction detection components of circumferential distribution, through the wrapping type of positioning V -groove and workpiece surface, eliminates the blind area of detection, solves the problem of single detection direction of prior art, and the linkage design of double spring and pressure sensor, real -time capture workpiece radial runout brings the force variation of two spring, and the detection data is more accurate, solves the problem of insufficient accuracy of prior art.

Description

Technical Field

[0001] This utility model relates to the field of shaft parts testing technology, and more specifically, to a V-shaped guide device for detecting radial runout of bearings. Background Technology

[0002] Shafts are typical machine parts, primarily used to support transmission components and transmit power and motion. After manufacturing, shafts typically require geometric tolerance testing to determine their quality. Radial runout tolerance is widely used because it comprehensively controls coaxiality and cylindricity errors, and the testing device is relatively simple. Its measurement principle involves the indicator moving relative to the shaft as it rotates continuously around a reference axis. The indicator measures the error value of the measured part in a given measurement direction.

[0003] Among them, the patent with announcement number CN214951095U discloses a combined radial runout measuring device for shaft parts, including a frame, on which three fixed support plates are fixed at equal intervals. The side walls of the three fixed support plates are rotatably connected to a rotating shaft through bearings. One end of each rotating shaft is fixed with a gear disk, and the three gear disks are meshed together. The other end of each rotating shaft is fixed with an electromagnetic chuck.

[0004] When in use, this structure can achieve the rotation of shaft parts by setting up a fixed support plate, rotating shaft, gear disk, electromagnetic chuck, driven pulley, geared motor, driving pulley, synchronous belt, V-shaped support block, movable support plate, guide rod, center and spring. However, it can only be positioned in a single direction or with a few support points, which cannot form a wrap-around fit to the workpiece. This results in a single detection direction, blind spots, and an inability to fully capture the radial runout error in the circumferential direction of the workpiece. Ultimately, this leads to insufficient detection accuracy and makes it difficult to meet the quality inspection requirements of high-precision shaft parts. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a bearing radial runout detection V-shaped guide device, which aims to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a bearing radial runout detection V-shaped guide device, including a connecting frame, and a plurality of guide detection components are arranged on the outer side of the connecting frame;

[0007] The guide detection component includes a limiting cylinder disposed on the outside of the connecting frame, a sliding column slidably connected to the middle of the limiting cylinder, and a first through hole opened on the outside of the connecting frame, the first through hole communicating with the sliding column.

[0008] One end of the sliding column is provided with a stop rod, and a positioning V-groove for positioning is provided on the stop rod. A first spring is provided on the side of the sliding column away from the stop rod.

[0009] Optionally, in a possible implementation, a pad is provided at the end of the first spring away from the slide column, the pad is fixed to the end of the limiting cylinder away from the connecting frame, and an extension rod is provided in the middle of the first spring, the extension rod is fixed to the slide column;

[0010] Optionally, in a possible implementation, a second spring is provided at the end of the extension rod away from the slide column, a second through hole is provided through the middle of the pad, a pressure sensor is provided on the surface of the second through hole, one end of the second spring passes through the second through hole and extends to the pressure sensor, a weight reduction hole is provided through the surface of the limiting cylinder, the limiting cylinder is fixed to the outside of the connecting frame by welding, the vertical cross-sectional shape of the connecting frame is set as a polygon, and each of the limiting cylinders is distributed circumferentially along the axial direction of the connecting frame;

[0011] The technical effects and advantages of this utility model are as follows:

[0012] By employing multiple sets of circumferentially distributed guiding detection components, and by using positioning V-grooves to wrap and fit the workpiece surface, blind spots in detection are eliminated, solving the problem of single detection direction in existing technologies. The dual-spring and pressure sensor linkage design captures force changes caused by radial runout of the workpiece in real time, resulting in more accurate detection data and solving the problem of insufficient accuracy in existing technologies.

[0013] Furthermore, its compact structure and strong adaptability allow it to be adapted to shaft parts of different sizes without complicated debugging, making assembly and use more convenient. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0015] Figure 1 This is a front view of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the guide detection component of this utility model.

[0017] Figure 3 This is a schematic diagram of the pressure sensor, second spring, first spring, extension rod, sliding column, and stop rod of this utility model.

[0018] Figure 4 This is a schematic diagram of the connecting frame, limiting cylinder, and pad of this utility model.

[0019] The attached figures are labeled as follows: 1. Connecting frame; 2. Limiting cylinder; 3. First through hole; 4. Sliding column; 5. Support rod; 6. Positioning V-groove; 7. First spring; 8. Extension rod; 9. Pressure sensor; 10. Second spring; 11. Pad; 12. Second through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This embodiment discloses a V-shaped guide device for detecting radial runout of bearings, aiming to solve the technical problems of existing measuring devices being unable to achieve workpiece-wrap-type detection and having low detection accuracy:

[0022] As attached Figure 1 As shown, it includes a connecting frame 1 and several guide detection components distributed along its outer circumference. In this embodiment, five components are preferred, but two to four components can be adapted according to the workpiece size. The vertical cross-sectional shape of the connecting frame 1 is set as a regular polygon and is integrally formed with high-strength aluminum alloy, which ensures structural rigidity and reduces the overall weight. A first through hole 3 is opened on the outer side corresponding to the position of each guide detection component to realize the communication between the sliding column 4 and the interior of the connecting frame 1.

[0023] As attached Figure 2 As shown, the specific structure of each guide detection component includes a limiting cylinder 2 welded and fixed to the outside of the connecting frame 1. The limiting cylinder 2 is a cylindrical body made of stainless steel, and its surface is provided with a weight reduction hole 13 to reduce the weight of the component and facilitate observation of the movement of the internal sliding column 4. The middle part of the limiting cylinder 2 slides with the sliding column 4, and its surface is chrome-plated for rust prevention. One end of the limiting cylinder 2 extends through the first through hole 3 into the interior of the connecting frame 1 and is fixedly connected to a stop rod 5. The other end abuts against the first spring 7.

[0024] The end of the stop rod 5 away from the slide column 4 is provided with a positioning V-groove 6. The included angle of the positioning V-groove 6 is set to 90°. The groove surface is polished and used to fit and position with the outer ring surface of the bearing being tested.

[0025] As attached Figure 3As shown, an extension rod 8 is coaxially fixed on the side of the sliding column 4 away from the abutment rod 5. The diameter of the extension rod 8 is smaller than that of the sliding column 4. A first spring 7 is sleeved on its outer side. One end of the first spring 7 abuts against the end face of the sliding column 4, and the other end abuts against the inner side of the pad 11.

[0026] The pad 11 is a circular steel plate, welded and fixed to the end of the limiting cylinder 2 away from the connecting frame 1, as shown in the attached figure. Figure 4 As shown, a second through hole 12 is provided through the middle of the extension rod 8. The diameter of the second through hole 12 is slightly larger than the diameter of the extension rod 8. A second spring 10 is fixedly connected to one end of the extension rod 8 away from the slide column 4. The other end of the second spring 10 passes through the second through hole 12 and abuts against the detection end of the pressure sensor 9. The pressure sensor 9 is fixed to the outside of the pad 11 by bolts. It is a miniature pressure sensor of model LCL-01. Its signal output end is connected to an external data acquisition terminal through a wire.

[0027] The specific working principle is as follows: the bearing workpiece to be tested is placed inside the connecting frame 1, so that the outer ring of the bearing fits into the positioning V groove 6 of the three guide detection components; at this time, the preload of the first spring 7 is transmitted to the abutment rod 5 through the sliding column 4, and the positioning V groove 6 fits tightly into the surface of the outer ring of the bearing, forming a wrap-around positioning. At the same time, the second spring 10 is squeezed by the extension rod 8 to generate elastic force. The pressure sensor 9 detects the pressure value of the second spring 10 in real time, and displays whether the pressure of the three guide detection components is balanced through the external terminal, so as to ensure that the coaxiality positioning of the bearing workpiece is accurate.

[0028] The bearing workpiece is driven to rotate at a constant speed around its own reference axis by an external drive device. During the rotation, if the bearing has radial runout, its outer ring surface will generate a radial force on the abutment rod 5, pushing the slide column 4 to slide along the axial direction of the limiting cylinder 2, thereby driving the extension rod 8 to squeeze or release the second spring 10.

[0029] Pressure sensor 9 collects the pressure change signal of the second spring 10 in real time and converts the signal into an electrical signal and transmits it to an external data acquisition terminal. The terminal calculates the radial runout error value of the bearing based on the pressure change.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bearing radial runout detection V-block guide device, comprising a connecting frame (1), characterized in that: Several guide detection components are provided on the outside of the connecting frame (1); The guide detection component includes a limiting cylinder (2) disposed on the outside of the connecting frame (1), a sliding column (4) is slidably connected to the middle of the limiting cylinder (2), and a first through hole (3) is opened on the outside of the connecting frame (1), the first through hole (3) is connected to the sliding column (4). One end of the sliding column (4) is provided with a stop rod (5), and a positioning V-groove (6) for positioning is provided on the stop rod (5). A first spring (7) is provided on the side of the sliding column (4) away from the stop rod (5).

2. The bearing radial runout detection V-block guide device according to claim 1, characterized in that: The first spring (7) is provided with a pad (11) at the end away from the slide column (4), and the pad (11) is fixed at the end of the limiting cylinder (2) away from the connecting frame (1).

3. The bearing radial runout detection V-shaped guide device according to claim 2, characterized in that: An extension rod (8) is provided in the middle of the first spring (7), and the extension rod (8) is fixed on the slide (4).

4. The bearing radial runout detection V-block guide device according to claim 3, characterized in that: The extension rod (8) is provided with a second spring (10) at the end away from the slide (4), and a second through hole (12) is provided through the middle of the pad (11).

5. The bearing radial runout detection V-block guide device according to claim 4, characterized in that: A pressure sensor (9) is provided on the surface of the second through hole (12), and one end of the second spring (10) passes through the second through hole (12) and extends to the pressure sensor (9).

6. The bearing radial runout detection V-block guide device according to claim 1, characterized in that: The surface of the limiting cylinder (2) is provided with a weight reduction hole (13), and the limiting cylinder (2) is fixed to the outside of the connecting frame (1) by welding.

7. The bearing radial runout detection V-block guide device according to claim 1, characterized in that: The vertical cross-sectional shape of the connecting frame (1) is set as a polygon, and each of the limiting cylinders (2) is distributed circumferentially along the axial direction of the connecting frame (1).

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