A bearing measuring device

Abstract

The utility model relates to a bearing measuring device for the detection of the end face difference size of the sealing assembly of bearing ring after pressure mounting, comprising: a support base, a measuring platform is fixedly arranged on the support base, a measuring mechanism is arranged on the outer periphery of the measuring platform, the measuring mechanism is arranged on the support base through a connecting piece, an inner sealing assembly to be measured is installed on the measuring platform, and the measuring end of the measuring mechanism faces the inner sealing assembly to be measured; the measuring device is used for measurement, the inner sealing assembly to be measured is rotated on the measuring device for more than one round, the average value of the maximum value and the minimum value measured by a measuring table is the height difference size value, and the difference between the maximum value and the minimum value measured by the measuring table is the parallel difference value; the measuring device has the advantages of simple structure design, simple measurement principle, few assembly components, easy installation, realization of the measurement of the height difference between the metal sealing part and the sealing rubber ring in the inner sealing assembly used by the bearing ring, high measurement accuracy, and meeting of the detection requirements of the bearing.

Description

Technical Field

[0001] This utility model relates to a bearing measuring device for detecting the difference in surface dimensions at the rear end of the sealing assembly of bearing rings during press-fitting, and belongs to the field of bearing testing. Background Technology

[0002] The internal sealing assembly used in a certain tapered roller bearing ring requires the internal sealing metal part and the internal sealing rubber ring to be press-fitted. After press-fitting, it is necessary to detect the height difference between the metal sealing part and the sealing rubber ring in the internal sealing assembly, because the height difference between the internal sealing metal part and the internal sealing rubber ring can directly affect the sealing performance of the finished bearing. Based on this detection requirement, a bearing measurement method and structure that can realize this detection function has not yet been developed, and the bearing inspection work requirements cannot be met. Utility Model Content

[0003] In view of the above-mentioned testing requirements, the purpose of this utility model is to provide a bearing measuring device that can meet the testing requirements for the rear end face dimensions of the inner sealing assembly of the bearing after pressing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a bearing measuring device, comprising: a support base, a measuring platform fixedly mounted on the support base, a measuring mechanism located on the outer periphery of the measuring platform, the measuring mechanism being mounted on the support base via a connector, and an inner sealing component to be measured being mounted on the measuring platform, such that the measuring end of the measuring mechanism faces the inner sealing component to be measured. The internal sealing assembly described in the above scheme includes an internal sealing metal part and an internal sealing rubber ring. When assembling the finished bearing, the internal sealing assembly is fitted onto the inner ring through the internal sealing metal part. Furthermore, the upper end face of the support base is fixedly connected to the measuring platform by bolts; Furthermore, the support base is a cylindrical frustum structure with an inclined upper surface, and the inclined upper surface is in contact with the lower bottom surface of the measuring platform. Furthermore, the measuring platform is an annular platform with a flat bottom surface and a stepped protrusion around the outer edge of the upper surface; the stepped protrusion forms a step with a lower outer edge and a higher inner edge from the outer edge of the measuring platform toward the center, and the step forms a first step horizontal surface at the bottom, a side surface that is perpendicular to the first step horizontal surface and a second step horizontal surface that is perpendicular to the side surface. Furthermore, a circular weight-reducing hole is provided at the center of the measuring platform, and a pair of bolt holes are provided symmetrically in the area between the stepped boss of the measuring platform and the circular weight-reducing hole. Matching bolt blind holes are also provided on the upper surface of the support base corresponding to the position of the pair of bolt holes.

[0005] Furthermore, the inclined surface of the upper end face of the support base is set to form the relative highest and lowest points of the support base, and the measuring mechanism is installed near the highest point of the support base through a connector. Furthermore, the connector is an extension seat for connecting the measuring mechanism. The upper surface and side wall of the extension seat located near the highest point of the support base are provided with a strip-shaped groove towards the center of the support base. One end of the extension seat is fitted into the strip-shaped groove, and the other end extends to the outside of the support base. The size of the area where the extension seat is embedded in the strip-shaped groove of the support base matches the size of the strip-shaped groove, and the two form sliding friction. Furthermore, the measuring mechanism includes: a measuring instrument and a clamping bolt; the area of ​​the extension seat extending outside the support base forms a clamping structure, and the clamping structure in this area has bolt holes for setting the clamping bolt. The measuring instrument is clamped by the clamping structure and fixed by the clamping bolt, and the measuring needle of the measuring instrument faces upward.

[0006] Before measuring the height difference, the inner sealing component to be tested needs to be press-fitted onto the outer diameter of the inner sealing metal part using a press machine, and then the height difference is measured using the measuring device of this scheme.

[0007] The measurement principle of this scheme is as follows: When measuring using the comparative method, place the sample flat on the measuring device and adjust the instrument according to the tolerance marked on the standard part. If the standard part tolerance is marked as "+", the pointer will be clockwise at the 0 mark; if the standard part tolerance is marked as "-", the pointer will be counterclockwise at the 0 mark.

[0008] After completing the above assembly and adjustment, use this measuring device to perform the measurement. Rotate the inner sealing component to be measured more than one revolution on the measuring device. The average of the maximum and minimum values ​​measured by the measuring instrument is the height difference dimension value, and the difference between the maximum and minimum values ​​measured by the measuring instrument is the parallel difference value.

[0009] The beneficial effects of the measuring device of this utility model are: This measuring device has a simple structure, a simple measurement principle, few assembly components, and is easy to install. It can measure the height difference between the metal seal and the sealing ring in the internal sealing assembly used in bearing rings. It has the characteristics of high measurement accuracy and meets the testing requirements of bearings. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the bearing measuring device of this utility model.

[0011] Figure 2 for Figure 1 A partial structural diagram (hidden measurement platform).

[0012] Figure 3This is a structural diagram of the measuring platform of the bearing measuring device of this utility model.

[0013] Figure 4 This is an assembly diagram showing the bearing measuring device of this utility model in its operational state.

[0014] Figure 5 for Figure 4 Cross-sectional view.

[0015] In the figure, 1. Support base, 2. Measuring platform, 3. Inner sealing metal part, 4. Inner sealing rubber ring, 5. Bolt, 2.1. First step horizontal plane, 2.2. Side elevation, 2.3. Second step horizontal plane, 2.4. Circular weight reduction hole, 2.5. Bolt hole, 6. Extension seat, 7. Measuring gauge, 8. Gauge clamp bolt, 6.1. Area of ​​the extension seat extending outside the support base, 3.1. Lower end face of the inner sealing metal part, 3.2. Inner diameter of the lower end of the inner sealing metal part, 4.1. Lower end face of the inner sealing rubber ring. Detailed Implementation

[0016] 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.

[0017] like Figure 1-5 An embodiment of a bearing measuring device is shown, comprising: a support base 1, a measuring platform 2 fixedly mounted on the support base 1, a measuring mechanism located on the outer periphery of the measuring platform 2, the measuring mechanism being mounted on the support base 1 via a connector, and an inner sealing component to be measured being mounted on the measuring platform 2, such that the measuring end of the measuring mechanism faces the inner sealing component to be measured. The internal sealing assembly described in the above scheme includes an internal sealing metal part 3 and an internal sealing rubber ring 4. When assembling the finished bearing, the internal sealing assembly is fitted onto the inner ring through the internal sealing metal part 3. The sealing performance of the finished bearing is measured by detecting the height difference between the internal sealing metal part 3 and the internal sealing rubber ring 4. Furthermore, the upper end face of the support base 1 is fixedly connected to the measuring platform 2 by bolts 5; Furthermore, the support base 1 is a cylindrical frustum structure with an inclined upper surface, and the inclined upper surface is in contact with the lower bottom surface of the measuring platform 2. Furthermore, the measuring platform 2 is an annular platform with a flat bottom surface and a stepped boss around the outer edge of the upper surface; the stepped boss forms a step with a lower outer edge and a higher inner edge from the outer edge of the measuring platform 2 toward the center, forming a first step horizontal surface 2.1 at the bottom, a side surface 2.2 that is perpendicularly connected to the first step horizontal surface 2.1, and a second step horizontal surface 2.3 that is perpendicular to the side surface 2.2; the step with a lower outer edge and a higher inner edge of the measuring platform 2 is used to assemble the inner sealing component to be measured; Furthermore, a circular weight-reducing hole 2.4 is provided at the center of the measuring platform 2, and a pair of bolt holes 2.5 are provided symmetrically in the area between the stepped boss of the measuring platform 2 and the circular weight-reducing hole 2.4. The upper surface of the support base 1 corresponding to the position of the pair of bolt holes 2.5 is also provided with matching bolt blind holes. The installation of the support base 1 and the measuring platform 2 is achieved by bolts 5 passing through the bolt holes 2.5 of the measuring platform 2 and the bolt blind holes of the support base 1.

[0018] Furthermore, the inclined surface of the upper end face of the support base 1 is configured to form the relative highest and lowest points of the support base 1, and the measuring mechanism is installed near the highest point of the support base 1 through a connector. Furthermore, the connecting member is an extension seat 6 for connecting the measuring mechanism. A strip-shaped groove is formed on the upper surface and side wall near the highest point of the support base 1, pointing towards the center of the support base 1. One end of the extension seat 6 is fitted into the strip-shaped groove, and the other end extends to the outside of the support base 1. The size of the area of ​​the extension seat 6 embedded in the strip-shaped groove of the support base 1 matches the size of the strip-shaped groove, and the two form sliding friction, so that the extension seat 6 can slide relative to the support base 1, thereby realizing the adjustment of the position of the measuring mechanism. Furthermore, the measuring mechanism includes: a measuring instrument 7 and a clamping bolt 8; the area of ​​the extension seat 6 extending outside the support base 1 forms a clamping structure, and the clamping structure in this area has bolt holes for setting the clamping bolt 8. The measuring instrument 7 is clamped by the clamping structure and fixed by the clamping bolt 8, and the measuring needle of the measuring instrument 7 faces upward.

[0019] Before measuring the height difference, the inner sealing component to be tested needs to be press-fitted onto the outer diameter of the inner sealing metal part 3 using a press machine, and then the height difference is measured using the measuring device of this scheme. In this scheme, the inner sealing component to be tested needs to be installed on the measuring platform 2 of the measuring device; when the step of the measuring platform 2 is engaged with the inner sealing component to be tested, the first step horizontal surface 2.2 of the step is engaged with the lower end surface 3.1 of the inner sealing metal part, and the lower end inner diameter 3.2 of the inner sealing metal part is engaged with the side vertical surface 2.2; after the inner sealing component to be tested is assembled on the measuring platform 2, the position of the measuring instrument of the measuring mechanism is adjusted so that the measuring needle of the measuring instrument 7 of the measuring mechanism hits the lower end surface 4.1 of the inner sealing ring.

[0020] The measurement principle of this scheme is as follows: When measuring using the comparative method, place the sample flat on the measuring device and adjust the instrument according to the tolerance marked on the standard part. If the standard part tolerance is marked as "+", the pointer will be clockwise at the 0 mark; if the standard part tolerance is marked as "-", the pointer will be counterclockwise at the 0 mark.

[0021] After completing the above assembly and adjustment, the measurement is performed using this measuring device. The inner sealing component to be measured is rotated more than one revolution on the measuring device. In this embodiment, the average of the maximum and minimum values ​​measured by measuring table 7 is the height difference dimension value, and the difference between the maximum and minimum values ​​measured by measuring table 7 is the parallel difference value.

[0022] The following data are from measurements of the height difference and parallelism difference of the internal sealing assembly of bearing model 352226X2-2RZ using this measuring device: The units for height difference and parallelism difference are micrometers (μm).

[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.

[0028] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A bearing measuring device, characterized in that, include: A support base is provided, on which a measuring platform is fixedly mounted. A measuring mechanism is located on the outer periphery of the measuring platform. The measuring mechanism is mounted on the support base via a connector. The inner sealing component to be tested is mounted on the measuring platform, with the measuring end of the measuring mechanism facing the inner sealing component to be tested.

2. The bearing measuring device according to claim 1, characterized in that: The inner sealing assembly includes an inner sealing metal part and an inner sealing rubber ring. During the assembly of the finished bearing, the inner sealing assembly is fitted onto the inner ring through the inner sealing metal part.

3. The bearing measuring device according to claim 1, characterized in that: The upper surface of the support base is fixedly connected to the measuring platform by bolts.

4. The bearing measuring device according to claim 1, characterized in that: The support base is a cylindrical truncated structure with an inclined upper surface, and the inclined upper surface is in contact with the lower surface of the measuring platform.

5. A bearing measuring device according to claim 2, characterized in that: The measuring platform is an annular platform with a flat bottom surface and a stepped protrusion around the outer edge of the upper surface. The stepped protrusion forms a step with a lower outer edge and a higher inner edge from the outer edge of the measuring platform toward the center. This step forms a first step horizontal surface at the bottom, a side surface that is perpendicular to the first step horizontal surface, and a second step horizontal surface that is perpendicular to the side surface. The step with a lower outer edge and a higher inner edge of the measuring platform is used to assemble the inner sealing component to be measured.

6. A bearing measuring device according to claim 5, characterized in that: A circular weight-reducing hole is opened at the center of the measurement platform. A pair of bolt holes are opened symmetrically in the area between the stepped boss of the measurement platform and the circular weight-reducing hole. Matching bolt blind holes are also opened on the upper surface of the support base corresponding to the position of the pair of bolt holes.

7. A bearing measuring device according to claim 4, characterized in that: The inclined surface of the upper end of the support base is set to form the relative highest and lowest points of the support base, and the measuring mechanism is installed near the highest point of the support base through a connector.

8. A bearing measuring device according to claim 7, characterized in that: The connector is an extension seat for connecting the measuring mechanism. The upper surface and side wall of the extension seat located near the highest point of the support base are provided with a strip-shaped groove towards the center of the support base. One end of the extension seat is fitted into the strip-shaped groove, and the other end extends to the outside of the support base. The size of the area of ​​the extension seat embedded in the strip-shaped groove of the support base matches the size of the strip-shaped groove, and the two form sliding friction, so that the extension seat can slide relative to the support base.

9. A bearing measuring device according to claim 8, characterized in that: The measuring mechanism includes a measuring instrument and a clamping bolt; the area of ​​the extension seat extending outside the support base forms a clamping structure, and the clamping structure in this area has bolt holes for setting the clamping bolt. The measuring instrument is clamped by the clamping structure and fixed by the clamping bolt, and the measuring needle of the measuring instrument faces upward.

10. A bearing measuring device according to claim 5, characterized in that: When the step of the measuring platform is fitted with the inner sealing component to be measured, the horizontal surface of the first step of the step fits together with the lower end face of the inner sealing metal part, and the inner diameter of the lower end of the inner sealing metal part fits with the side profile.

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