A multi-functional bearing measuring instrument

Abstract

The utility model relates to a kind of multifunctional bearing measuring instruments, comprising: support, shell, disc cover plate, rotating assembly, measuring mechanism and fulcrum unit;The shell is with cavity in lower part, and upper end is disc-shaped structure;Shell lower part is supported by support;Disc cover plate is fixedly arranged on the disc of shell upper end by bolt, and rotating assembly is distributed on the disc cover plate;Bearing ring is placed on the rotating assembly on disc cover plate;The measuring mechanism includes multiple measuring point units, and multiple measuring point units are respectively distributed on the outside of shell upper end disc and the upper part of shell upper end disc;The fulcrum unit includes multiple fulcrums, and multiple fulcrums are vertically distributed on the upper end of cover plate and located in the inner diameter of bearing ring, to form positioning support to bearing ring;The instrument is synchronously detected to the different characteristics of bearing outer ring by multiple gage integrated settings, realizes "once clamping, multiple parameters are measured simultaneously", both guarantees the measurement accuracy, and improves detection efficiency.

Description

Technical Field

[0001] This utility model relates to bearing measuring equipment, specifically a multifunctional bearing measuring instrument, belonging to the field of bearing testing technology. Background Technology

[0002] In bearing manufacturing, dimensional and geometric tolerance inspection requires specialized measuring equipment to achieve high-precision measurement of multiple bearing parameters. Existing bearing measuring equipment typically uses the outer ring of a double-row tapered roller bearing as the measurement object, employing a comparative method. By comparing the measured bearing's outer ring raceway with a standard part, relevant parameters such as raceway dimensions, raceway ellipse, raceway angle, and groove runout are obtained. However, with the increasing demands for diverse bearing parameters in process control standards, additional parameters need to be measured, such as the eccentricity of the double raceways and raceway wall thickness of double-row tapered roller bearings. Due to the increase in bearing measurement parameters, existing bearing measuring equipment is insufficient; multiple devices are needed to complete the task. This method cannot achieve simultaneous multi-parameter measurement, is cumbersome and time-consuming, and introduces measurement errors, significantly reducing the measurement efficiency and accuracy of bearing parts. Utility Model Content

[0003] In view of the above-mentioned technical problems, the purpose of this utility model is to provide a multi-functional bearing measuring instrument. The instrument adopts a multi-meter integrated structure to realize multi-parameter synchronous measurement in one clamping, and completes multi-dimensional precision detection of the bearing outer ring, which greatly improves the measurement efficiency and accuracy of bearing parts.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multifunctional bearing measuring instrument, comprising: a support, a housing, a disc cover plate, a rotating assembly, a measuring mechanism, and a fulcrum unit; the housing has a cavity at the bottom and a disc-shaped structure at the top; the lower part of the housing is supported by the support; a disc cover plate is fixedly mounted on the upper disc of the housing by bolts, and rotating assemblies are distributed on the disc cover plate; the bearing ring is placed on the rotating assembly on the disc cover plate; the measuring mechanism includes multiple measuring point units, which are respectively distributed on the outer side of the upper disc of the housing and on the upper part of the upper disc of the housing; the fulcrum unit includes multiple fulcrums, which are all vertically distributed on the upper part of the cover plate and located within the inner diameter of the bearing ring, forming a positioning support for the bearing ring; Furthermore, the disc cover plate is provided with two dovetail grooves extending to the outer diameter of the disc cover plate. A long groove channel is provided on the disc cover plate between the two dovetail grooves. The outer ends of the two dovetail grooves face the outer diameter of the disc cover plate, and the other ends are close to the center of the disc cover plate, so that the two dovetail grooves form a certain angle with the groove channel. Furthermore, the rotating assembly includes three steel ball rolling components, which are evenly distributed on the upper outer periphery of the disc cover plate; the three steel ball rolling components include one movable structure and two fixed structures; each steel ball rolling component includes: a steel ball bracket, a steel ball and a bolt; the steel ball bracket is provided with a steel ball groove to accommodate the steel ball, the steel ball is installed in the steel ball groove, and the steel ball bracket has bolt connection holes; Furthermore, the movable steel ball rolling kit has a dovetail slider at the bottom of the bolt. The movable steel ball rolling kit is slidably mounted in a dovetail groove of the cover plate by the bolt passing through the bolt connection hole and the dovetail slider. The two fixed steel ball rolling kits are directly fixed to the cover plate by bolts. Furthermore, the measuring mechanism includes four measuring point units, two of which are connected to the outside of the housing via two extension platforms extending outward from the outer wall of the lower cavity of the housing, namely the first measuring point unit and the second measuring point unit, and the two measuring point units have the same structure; a third measuring point unit is provided on the outer diameter of the upper disk of the housing near the second measuring point unit; and the fourth measuring point unit is slidably disposed on the cover plate via an auxiliary side rod assembly. Furthermore, the first measuring unit includes: a support frame disposed on the housing extension platform, a hollow sleeve disposed on the support frame, a measuring head installed inside the hollow sleeve, the front end of the measuring head facing the bearing race, and a first dial indicator installed at the end; the first dial indicator is used to measure the raceway dimension and raceway ellipse of the bearing outer ring; similarly, the second measuring unit also includes a support frame, a hollow sleeve, and a measuring head, the front end of the measuring head facing the bearing race, and a second dial indicator installed at the end; the second dial indicator is used to measure the raceway angle and groove runout value of the bearing outer ring; Furthermore, the third measuring unit includes: a mounting bracket, a lever, a connecting shaft, a dial indicator clamp, a third dial indicator, and fastening bolts; the mounting bracket is fixed to the outer diameter surface of the upper disk of the housing near the position of the second measuring unit by fastening bolts, an ear plate is formed on one side of the mounting bracket, one end of the lever is connected to the ear plate by the connecting shaft, and the other end is fixed to the dial indicator clamp by fastening bolts, the third dial indicator is installed by the dial indicator clamp, and the probe of the third dial indicator points to the outer ring of the bearing; the wall thickness of the outer ring of the bearing is measured by the third measuring unit; Furthermore, the fourth measuring point unit includes: an auxiliary side rod assembly, a dial indicator clamp, a fourth dial indicator, and a slider; the auxiliary side rod assembly includes: a column, a column base at the bottom of the column, a column top rotatably connected to one end of a rotating shaft via a shaft, a dial indicator clamp mounted on the rotating shaft, and a fourth dial indicator mounted via the dial indicator clamp; a dovetail slider matching the dovetail groove of the cover plate is fixed to the lower end of the column base by bolts; the fourth measuring point unit is used to measure the double raceway eccentricity value of the bearing outer ring.

[0005] Furthermore, four support units are distributed on the upper part of the cover plate and located within the inner diameter of the bearing ring, namely the first support, the second support, the third support, and the fourth support. Among them, the first and third support points adopt a bracket-type support form, while the second and fourth support points adopt a steel ball-type support form. The first and third support points have the same structure, with their bottoms using guide rails to fit into the guide plate inside the housing and their upper parts passing through the long strip-shaped groove channel of the cover plate. The second and fourth support points have the same structure, with their bottoms using dovetail bolts to slide into the dovetail groove and the long strip-shaped groove channel of the cover plate. Furthermore, two guide plates are provided in the cavity at the bottom of the housing for the engagement of the first fulcrum and the third fulcrum. The guide plates are provided with grooved tracks. The first fulcrum includes a first sleeve and a first bracket. The bottom end of the first sleeve is provided with a protrusion structure that matches the grooved track of the first guide plate. The top end of the first sleeve is provided with a bracket. The position of the first fulcrum is adjusted by moving the protrusion structure in the grooved track of the first guide plate, so that the free end of the first bracket is supported on the inner diameter of the outer ring of the bearing. The structure of the third fulcrum is exactly the same as that of the first fulcrum, that is, the third fulcrum includes a third sleeve and a third bracket. The position of the third fulcrum is adjusted by moving the protrusion structure in the grooved track of the third guide plate, so that the free end of the third bracket is supported on the inner diameter of the outer ring of the bearing. Furthermore, the second fulcrum includes: a second sleeve, a second steel ball seat, and a dovetail bolt; the upper end of the second sleeve is provided with a second steel ball seat, a steel ball is provided inside the second steel ball seat, and the bottom end of the second sleeve is provided with a dovetail bolt. The entire second fulcrum is set in the dovetail groove of the cover plate by the dovetail bolt at the bottom of the second sleeve. Furthermore, the fourth support point includes: a fourth sleeve, a fourth steel ball seat, and a dovetail bolt; the upper end of the fourth sleeve is provided with a fourth steel ball seat, a steel ball is provided inside the fourth steel ball seat, and the bottom end of the fourth sleeve is provided with a dovetail bolt. The entire fourth support point is set in the dovetail groove at the front end of the long groove channel of the cover plate through the dovetail bolt at the bottom of the fourth sleeve. The principle of measuring bearing rings using the above-mentioned measuring instrument is to use a comparative method. The sample is placed flat on the instrument, and the instrument is adjusted according to the tolerance marked on the standard part. When the tolerance of the standard part is marked as "+", the pointer is in the clockwise direction at 0; when the tolerance of the standard part is marked as "-", the pointer is in the counterclockwise direction at 0.

[0006] The measurement method using the above-mentioned measuring instrument is as follows: The bearing outer ring is placed on the rotating assembly of the cover plate. The positions of each measuring point unit of the measuring mechanism are adjusted. After being adjusted to a suitable position, the bearing ring is rotated more than one revolution on the instrument. Specifically, the arithmetic mean of the maximum and minimum values ​​measured by the first dial indicator of the first measuring point unit is the raceway dimension, and the difference between the maximum and minimum values ​​is the raceway ellipse. The algebraic sum of the maximum and minimum values ​​measured by the second dial indicator of the second measuring point unit is the raceway angle, and the algebraic difference between the maximum and minimum values ​​is the groove runout value. The difference between the maximum and minimum values ​​measured by the third dial indicator of the third measuring point unit is the wall thickness. The difference between the maximum and minimum values ​​measured by the fourth dial indicator of the fourth measuring point unit is the double raceway eccentricity value. The above process realizes the synchronous detection of different characteristics of the bearing outer ring by integrating multiple gauges.

[0007] The beneficial effects of this utility model are: This instrument integrates multiple gauges to simultaneously detect different features of the bearing outer ring, achieving "one clamping, multiple parameters measured simultaneously," which ensures measurement accuracy and improves testing efficiency. The advantage of using this fixture for measurement is its high precision, which can effectively eliminate systematic errors in the measurement system and is suitable for precision testing of batch bearings. Attached Figure Description

[0008] Figure 1 This is a structural diagram of the measuring instrument of this utility model.

[0009] Figure 2 for Figure 1 Another perspective on the structure diagram.

[0010] Figure 3 This is a partial structural diagram of the measuring instrument of this utility model (cover plate omitted).

[0011] Figure 4 for Figure 3 Another perspective on the structure diagram.

[0012] Figure 5 for Figure 4 Another perspective on the structure diagram.

[0013] Figure 6 This is an assembly drawing of the measuring instrument and bearing ring of this utility model.

[0014] Figure 7 for Figure 6 Top view.

[0015] Figure 8 This is a schematic diagram of the measurement of this utility model.

[0016] In the diagram, 1. Support, 2. Housing, 3. Disc cover plate, 2.1. Cavity, 2.2. Upper disc of housing, 4. Bearing ring, 3.1. Dovetail groove, 3.2. Long strip groove channel, 5. Steel ball bracket, 6. Steel ball, 7. Dovetail slider, 2.3. Extension platform, 8. Support frame, 9. Hollow sleeve, 10. Measuring head, 11. First dial indicator, 12. Second dial indicator, 13. Hanger, 14. Swivel handle, 15. Connecting shaft, 16. Indicator clip, 17. 18. Dial indicator 3, Fastening bolt, 19. Fourth dial indicator, 20. Column, 21. Column base, 22. Rotating shaft, 23. First sleeve, 24. First bracket, 25. First guide plate, 25.1. First guide plate grooved track, 26. Third sleeve, 27. Third bracket, 28. Third guide plate, 28.1. Third guide plate grooved track, 29. Second sleeve, 30. Second steel ball seat, 31. Dovetail bolt, 32. Fourth sleeve, 33. Fourth steel ball seat. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-7 A multifunctional bearing measuring instrument is shown, comprising: a support 1, a housing 2, a disc cover plate 3, a rotating assembly, a measuring mechanism, and a fulcrum unit; the housing 2 has a cavity 2.1 at the bottom and a disc-shaped structure at the top; the lower part of the housing 2 is supported by the support 1; the disc cover plate 3 is fixedly mounted on the disc 2.2 at the top of the housing by bolts, and the rotating assembly is distributed on the disc cover plate 3; the bearing ring 4 is placed on the rotating assembly on the disc cover plate 3; the measuring mechanism includes multiple measuring point units, which are respectively distributed on the outer side of the disc 2.2 at the top of the housing and on the upper part of the disc 2.2 at the top of the housing; the fulcrum unit includes multiple fulcrums, which are all vertically distributed on the top of the cover plate 3 and located within the inner diameter of the bearing ring 4, forming a positioning support for the bearing ring 4; Furthermore, the disc cover 3 has the same specifications as the upper dimension of the disc-shaped housing 2, so that the disc cover 3 covers the upper surface of the housing 2 exactly. Furthermore, the disc cover plate 3 has two dovetail grooves 3.1 extending to the outer diameter of the disc cover plate 3. The disc cover plate 3 between the two dovetail grooves 3.1 has an elongated groove channel 3.2. The outer ends of the two dovetail grooves 3.1 face the outer diameter of the disc cover plate 3, and the other ends are close to the center of the disc cover plate 3, so that the two dovetail grooves 3.1 form a certain angle with the groove channel 3.2. Furthermore, the rotating assembly includes three rolling steel ball components, which are evenly distributed around the upper periphery of the disc cover plate 3; the three rolling steel ball components include one movable structure and two fixed structures; each rolling steel ball component includes: a steel ball bracket 5, a steel ball 6, and bolts; the steel ball bracket 5 is provided with a steel ball groove to accommodate the steel ball 6, the steel ball 6 is installed in the steel ball groove, and bolt connection holes are opened in the steel ball bracket 5; Furthermore, the lower part of the bolt of the movable steel ball rolling assembly is provided with a dovetail slider 7. The movable steel ball rolling assembly is slidably mounted in a dovetail groove 3.1 of the cover plate 3 through the bolt passing through the bolt connection hole and the dovetail slider 7. The two fixed steel ball rolling assemblies are directly fixed to the cover plate 3 by bolts. The relative position of the three steel ball rolling assemblies can be adjusted by adjusting the position of the movable steel ball rolling assembly in the dovetail groove 3.1 of the cover plate, so as to be suitable for bearing rings 4 of different diameter specifications.

[0019] Furthermore, the measuring mechanism includes four measuring point units, two of which are connected to the outside of the housing 2 via two extension platforms 2.3 extending outward from the outer wall of the lower cavity 2.1 of the housing, namely the first measuring point unit and the second measuring point unit, and the two measuring point units have the same structure; a third measuring point unit is provided on the outer diameter of the upper disk 2.2 of the housing near the second measuring point unit; and the fourth measuring point unit is slidably provided on the cover plate 3 via an auxiliary side rod assembly. Furthermore, the first measuring unit includes: a support frame 8 disposed on the housing extension platform 2.3, a hollow sleeve 9 disposed on the support frame 8, a measuring head 10 installed inside the hollow sleeve 9, the front end of the measuring head 10 facing the bearing ring 4, and a first dial indicator 11 installed at the end; the first dial indicator 11 is used to measure the raceway dimension and raceway ellipse of the bearing outer ring 4; similarly, the second measuring unit also includes a support frame, a hollow sleeve and a measuring head, the front end of the measuring head facing the bearing ring, and a second dial indicator 12 installed at the end; the second dial indicator 12 is used to measure the raceway angle and groove runout value of the bearing outer ring 4; Furthermore, the third measuring unit includes: a mounting bracket 13, a lever 14, a connecting shaft 15, a dial indicator clamp 16, a third dial indicator 17, and fastening bolts 18; the mounting bracket 13 is fixed to the outer diameter surface of the upper end disc 2.2 of the housing near the position of the second measuring unit by the fastening bolts 18; an ear plate is formed on one side of the mounting bracket 13; one end of the lever 14 is connected to the ear plate by the connecting shaft 15, and the other end is fixed to the dial indicator clamp 16 by the fastening bolts 18; the third dial indicator 17 is installed through the dial indicator clamp 16, and the probe of the third dial indicator 17 points to the outer ring 4 of the bearing; the wall thickness of the outer ring 4 of the bearing is measured through the third measuring unit; The aforementioned handle 14 is rotatably connected to the connecting shaft 15, so that the handle 15 drives the third dial indicator 17 at the end to adjust the angle, and the adjusting probe can contact the outer ring 4 of the bearing. Furthermore, the fourth measuring unit includes: an auxiliary side rod assembly, a gauge clamp 16, a fourth dial indicator 19, and a slider; the auxiliary side rod assembly includes: a column 20, a column base 21 at the bottom of the column 20, and a shaft rotatably connected to one end of a rotating shaft 22 at the top of the column 20. A gauge clamp 16 is installed on the rotating shaft 22, and a fourth dial indicator 19 is installed through the gauge clamp 16; a dovetail slider 7 matching the dovetail groove 3.1 of the cover plate 3 is fixed to the lower end of the column base 21 by bolts; in use, the fourth measuring unit is slidably positioned in the dovetail groove 3.1 of the cover plate 3 through the dovetail slider 7 at the bottom of the column 20, and the fourth measuring unit is positioned inside the bearing ring 4. The rotating shaft 22 above the column 20 is adjusted so that the probe of the fourth dial indicator 19 strikes the inner diameter surface of the bearing ring 4; the double raceway eccentricity value of the outer ring 4 of the bearing is measured through the fourth measuring unit.

[0020] Furthermore, four support units are distributed on the upper end of the cover plate 3 and located within the inner diameter of the bearing ring 4, namely the first support, the second support, the third support, and the fourth support. Among them, the first and third support adopt a bracket-type support form, while the second and fourth support adopt a steel ball-type support form. The first and third support have the same structure, with their bottoms using guide rails to fit into the guide plate inside the housing 2 and their upper parts passing through the elongated groove channel 3.2 of the cover plate 3. The second and fourth support have the same structure, with their bottoms using dovetail bolts to slide into the dovetail groove 3.1 and the elongated groove channel 3.2 of the cover plate 3. Furthermore, two guide plates for the first fulcrum and the third fulcrum are provided in the cavity 2.1 at the lower part of the housing 2. The guide plates are provided with grooved tracks. The first fulcrum includes a first sleeve 23, a first bracket 24, and a first guide plate 25. The bottom end of the first sleeve 23 is provided with a protrusion structure that matches the grooved track 25.1 of the first guide plate. The top end of the first sleeve 23 is provided with a first bracket 24. The position of the first fulcrum is adjusted by moving the protrusion structure in the grooved track 25.1 of the first guide plate, so that the free end of the first bracket 24 is supported on the inner diameter of the outer ring 4 of the bearing. Similarly, the structure of the third fulcrum is exactly the same as that of the first fulcrum. That is, the third fulcrum includes a third sleeve 26, a third bracket 27, and a third guide plate 28. The position of the third fulcrum is adjusted by moving the protrusion structure in the grooved track 28.1 of the third guide plate, so that the free end of the third bracket 27 is supported on the inner diameter of the outer ring 4 of the bearing. Furthermore, the second fulcrum includes: a second sleeve 29, a second steel ball seat 30, and a dovetail bolt 31; the second sleeve 29 is provided with a second steel ball seat 30 at its upper end, and a steel ball is provided inside the second steel ball seat 30; the second sleeve 29 is provided with a dovetail bolt 31 at its bottom end; the entire second fulcrum is fitted into the dovetail groove 3.1 of the cover plate 3 by the dovetail bolt 31 at the bottom of the second sleeve 29, so that the second fulcrum can slide in the dovetail groove 3.1 of the cover plate 3 to change the position of the second fulcrum. Furthermore, the fourth fulcrum includes: a fourth sleeve 32, a fourth steel ball seat 33, and a dovetail bolt 31; the fourth sleeve 32 is provided with a fourth steel ball seat 33 at its upper end, and a steel ball is provided inside the fourth steel ball seat 33; the fourth sleeve 32 is provided with a dovetail bolt 31 at its bottom end; the entire fourth fulcrum is fitted into the dovetail groove at the front end of the elongated groove channel 3.2 of the cover plate 3 by the dovetail bolt 31 at the bottom of the fourth sleeve 32, so that the fourth fulcrum can slide in the dovetail groove of the cover plate 3 and change the position of the fourth fulcrum. The above four support points are set inside the bearing outer ring (bearing ring 4). The brackets of the first and third support points abut against the inner diameter of the outer ring, and the steel balls in the steel ball seats of the second and fourth support points abut against the inner diameter of the outer ring, thereby realizing the positioning of the bearing outer ring on the cover plate 3 when measuring, and ensuring the accuracy of the measurement.

[0021] The principle of measuring bearing ring 4 using the above measuring instrument is to use the comparison method. The sample is placed flat on the instrument, and the instrument is adjusted according to the tolerance marked on the standard part. When the tolerance of the standard part is marked as "+", the pointer is in the clockwise direction at 0 mark. When the tolerance of the standard part is marked as "-", the pointer is in the counterclockwise direction at 0 mark.

[0022] Taking a specific embodiment of the measurement method using the above-mentioned measuring instrument as an example: The outer ring of the bearing (bearing ring 4) is placed on the rotating assembly of the cover plate 3. The positions of each measuring point unit of the measuring mechanism are adjusted, and each support unit is adjusted to a suitable position. The bearing ring 4 is then rotated more than one revolution on the instrument. The arithmetic mean of the maximum value (-0.19 mm) and the minimum value (-0.15 mm) measured by the first dial indicator 11 of the first measuring point unit is the raceway dimension (-0.17 mm), and the difference between the maximum (-0.19 mm) and the minimum (-0.15 mm) value is the raceway ellipse (0.04 mm). The second percentage of the second measuring point unit... The algebraic sum of the maximum (+0.02 mm) and minimum (-0.01 mm) values ​​measured in Table 12 is the raceway angle (+0.01 mm), and the algebraic difference between the maximum (+0.02 mm) and minimum (-0.01 mm) values ​​is the groove swing value (0.03 mm). The difference between the maximum (+0.11 mm) and minimum (+0.09 mm) values ​​measured by the third dial gauge 17 of the third measuring point unit is the wall thickness (0.02 mm). The difference between the maximum (+0.08 mm) and minimum (+0.05 mm) values ​​measured by the fourth dial gauge 19 of the fourth measuring point unit is the double raceway eccentricity value (0.03 mm).

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A multifunctional bearing measuring instrument, characterized in that, include: The system comprises a support, a housing, a disc cover plate, a rotating assembly, a measuring mechanism, and a fulcrum unit. The housing has a cavity at the bottom and a disc-shaped structure at the top. The lower part of the housing is supported by a support. A disc cover plate is fixed to the upper disc of the housing by bolts, and rotating assemblies are distributed on the disc cover plate. Bearing rings are placed on the rotating assemblies on the disc cover plate. The measuring mechanism includes multiple measuring point units, which are distributed on the outer side of the upper disc of the housing and on the upper part of the upper disc of the housing. The fulcrum unit includes multiple fulcrums, which are vertically distributed on the upper part of the cover plate and located within the inner diameter of the bearing rings, providing positioning support for the bearing rings.

2. The multifunctional bearing measuring instrument according to claim 1, characterized in that: The disc cover plate has two dovetail grooves extending to the outer diameter of the disc cover plate. Between the two dovetail grooves, the disc cover plate has a long groove channel. The outer ends of the two dovetail grooves face the outer diameter of the disc cover plate, and the other ends are close to the center of the disc cover plate, so that the two dovetail grooves form a certain angle with the groove channel.

3. The multifunctional bearing measuring instrument according to claim 1, characterized in that: The rotating assembly includes three steel ball rolling components, which are evenly distributed on the upper outer periphery of the disc cover plate; The three-ball rolling assembly comprises one movable structure and two fixed structures; each ball rolling assembly includes: a ball support, a ball, and bolts; The steel ball support is provided with a steel ball groove to accommodate the steel ball, the steel ball is installed in the steel ball groove, and bolt connection holes are opened in the steel ball support.

4. The multifunctional bearing measuring instrument according to claim 1, characterized in that: The movable steel ball rolling kit has a dovetail slider at the bottom of the bolt. The movable steel ball rolling kit is slidably mounted in a dovetail groove of the cover plate by passing the bolt through the bolt connection hole and sliding through the dovetail slider. The two fixed steel ball rolling kits are directly fixed to the cover plate by bolts.

5. A multifunctional bearing measuring instrument according to claim 1, characterized in that: The measuring mechanism includes four measuring point units, two of which are connected to the outside of the housing via two extension platforms extending outward from the outer wall of the lower cavity of the housing. These are the first measuring point unit and the second measuring point unit, and the two measuring point units have the same structure. A third measuring point unit is provided on the outer diameter of the upper disk of the housing near the second measuring point unit. The fourth measuring point unit is slidably mounted on the cover plate via an auxiliary side rod assembly.

6. A multifunctional bearing measuring instrument according to claim 5, characterized in that: The first measuring point unit includes: a support frame set on the housing extension platform, a hollow sleeve set on the support frame, a measuring head installed inside the hollow sleeve, the front end of the measuring head facing the bearing ring, and a first dial indicator installed at the end; The second measuring unit also includes a support frame, a hollow sleeve, and a measuring head. The front end of the measuring head faces the bearing ring, and the end is equipped with a second dial indicator.

7. A multifunctional bearing measuring instrument according to claim 5, characterized in that: The third measuring unit includes: a mount, a handle, a connecting shaft, a gauge clamp, a third dial indicator, and fastening bolts; the mount is fixed to the outer diameter surface of the upper disk of the housing near the position of the second measuring unit by fastening bolts, an ear plate is formed on one side of the mount, one end of the handle is connected to the ear plate by the connecting shaft, and the other end is fixed to the gauge clamp by fastening bolts, and the third dial indicator is installed by the gauge clamp, with the probe of the third dial indicator pointing to the outer ring of the bearing.

8. A multifunctional bearing measuring instrument according to claim 5, characterized in that: The fourth measuring point unit includes: an auxiliary side rod assembly, a gauge clamp, a fourth dial indicator, and a slider; the auxiliary side rod assembly includes: a column, a column base at the bottom of the column, a column top and one end of a rotating shaft connected by a shaft, a gauge clamp installed on the rotating shaft, and a fourth dial indicator installed through the gauge clamp; a dovetail slider matching the dovetail groove of the cover plate is fixed to the lower end of the column base by bolts.

9. A multifunctional bearing measuring instrument according to claim 1, characterized in that: Four support units are distributed on the upper part of the cover plate and located within the inner diameter of the bearing ring, namely the first support, the second support, the third support, and the fourth support. Among them, the first and third supports adopt a bracket-type support form, while the second and fourth supports adopt a steel ball-type support form. The first and third supports have the same structure, with the bottom of both using a guide rail to fit into the guide plate inside the housing and the upper part passing through the long strip-shaped groove channel of the cover plate. The second and fourth supports have the same structure, with the bottom of both using dovetail bolts to slide into the dovetail groove and the long strip-shaped groove channel of the cover plate.

10. A multifunctional bearing measuring instrument according to claim 9, characterized in that: Two guide plates are provided in the cavity at the bottom of the housing for the engagement of the first fulcrum and the third fulcrum. The guide plates are provided with grooved tracks. The first fulcrum includes a first sleeve and a first bracket. The bottom end of the first sleeve is provided with a protrusion structure that matches the grooved track of the first guide plate. The top end of the first sleeve is provided with a bracket. The position of the first fulcrum is adjusted by moving the protrusion structure in the grooved track of the first guide plate, so that the free end of the first bracket is supported on the inner diameter of the outer ring of the bearing. The structure of the third fulcrum is exactly the same as that of the first fulcrum, that is, the third fulcrum includes a third sleeve and a third bracket. The position of the third fulcrum is adjusted by moving the protrusion structure in the grooved track of the third guide plate, so that the free end of the third bracket is supported on the inner diameter of the outer ring of the bearing.

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