阅读说明：本技术 轴承挡边测量方法及装置 (Bearing flange measuring method and device ) 是由 周宇 姜智 于全 林润磊 张放 王洪昆 王文刚 边志宏 王蒙 丁颖 王萌 焦杨 于 2021-08-11 设计创作，主要内容包括：本发明涉及一种轴承挡边测量方法及装置。一种轴承挡边测量方法,所述轴承挡边测量方法包括如下步骤：将待测轴承放置在定位装置上进行定位；在所述待测轴承的滚道侧选取预设长度的第一测量段,以及在所述待测轴承的挡边侧选取预设长度的第二测量段；所述第一测量段与第二测量段形成有第一夹角,并测量所述第一夹角的角度值；测量所述待测轴承滚道侧相对于所述待测轴承水平面的滚道倾斜角度；通过计算90°-第一夹角角度+滚道倾斜角度得出待测轴承的挡边角度。上述轴承挡边测量方法通过对待测轴承滚道侧、挡边侧相关角度的依次测量得出最终的挡边角度,从而有效保证了对于滚子轴承挡边角度测量的准确性。(The invention relates to a method and a device for measuring a flange of a bearing. A bearing flange measuring method comprises the following steps: placing the bearing to be tested on a positioning device for positioning; selecting a first measuring section with a preset length at the raceway side of the bearing to be measured, and selecting a second measuring section with a preset length at the flange side of the bearing to be measured; a first included angle is formed between the first measuring section and the second measuring section, and the angle value of the first included angle is measured; measuring the inclination angle of the raceway side of the bearing to be measured relative to the horizontal plane of the bearing to be measured; and calculating the angle of the flange of the bearing to be measured by the angle of 90 degrees to the first included angle plus the inclination angle of the raceway. According to the bearing flange measuring method, the final flange angle is obtained by sequentially measuring the relative angles of the roller path side and the flange side of the bearing to be measured, so that the accuracy of measuring the flange angle of the roller bearing is effectively ensured.)

1. The bearing flange measuring method is characterized by comprising the following steps: placing the bearing to be tested on a positioning device for positioning; selecting a first measuring section with a preset length at the raceway side of the bearing to be measured, and selecting a second measuring section with a preset length at the flange side of the bearing to be measured; a first included angle is formed between the first measuring section and the second measuring section, and the angle value of the first included angle is measured; measuring the inclination angle of the raceway side of the bearing to be measured relative to the horizontal plane of the bearing to be measured; and calculating the angle of the flange of the bearing to be measured by the angle of 90 degrees to the first included angle plus the inclination angle of the raceway.

2. A bearing rib measuring apparatus, using the bearing measuring method of claim 1, further comprising: positioning mechanism and detection mechanism, positioning mechanism is used for installing the bearing that awaits measuring, detection mechanism with positioning mechanism counterpoints the setting, just detection mechanism is used for right the bearing that awaits measuring measures.

3. The device for measuring the flange of a bearing of claim 2, wherein the positioning mechanism comprises a mounting base, a first moving component, a second moving component and an angle adjusting component, the first moving component is movably mounted on the mounting base, the second moving component is movably mounted on the first moving component, the angle adjusting component is movably mounted on the second moving component, and the angle adjusting component is used for placing the bearing to be measured.

4. The apparatus according to claim 3, wherein the first moving assembly includes a first moving seat, a first transmission member, and a first rotation member, the mounting base is provided with a first slide rail, the first moving seat is slidably engaged with the mounting base via the first slide rail, the first transmission member is mounted on the first moving seat, and the first rotation member is in transmission engagement with the first transmission member.

5. The device for measuring the flange of a bearing of claim 4, wherein the second moving assembly comprises a second moving base, a second transmission member and a second rotating member, the first moving base is provided with a second slide rail, the second moving base is slidably engaged with the mounting base through the second slide rail, the second transmission member is mounted on the second moving base, and the second rotating member is engaged with the second transmission member in a transmission manner.

6. The apparatus according to claim 5, wherein the angle adjustment assembly comprises a rotation base, a third transmission member, a third rotation member, and a positioning plate, the second moving base is provided with a rotation slot, the rotation base is rotatably mounted on the second moving base through the rotation slot, the third transmission member is mounted on the rotation base, the third rotation member is mounted on the second moving base, one end of the third rotation member is in transmission fit with the third transmission member, one end of the third rotation member extends out of the second moving base, the positioning plate is mounted on the rotation base, and the positioning plate is used for placing the bearing to be tested.

7. The bearing rib measuring device according to claim 6, wherein a clamping groove is formed in one surface, facing the positioning disc, of the rotating seat, and a clamping portion opposite to the clamping groove is formed in one surface, facing the rotating seat, of the positioning disc.

8. The bearing rib measuring device according to claim 7, wherein the angle adjusting assembly further comprises a supporting plate and a fixing member, the supporting plate is installed and matched with the second movable base, and the positioning plate is fixedly matched with the plate surface of the supporting plate through the fixing member.

9. The bearing rib measuring device according to claim 6, wherein the angle adjusting assembly further comprises a first positioning member and a second positioning member, the first positioning member and the second positioning member are arranged on the positioning plate at intervals, and both the first positioning member and the second positioning member are used for positioning and supporting the bearing to be measured.

10. The apparatus as claimed in claim 9, wherein the positioning plate further comprises a first kidney-shaped hole and a second kidney-shaped hole, the first positioning member is movably disposed on the positioning plate through the first kidney-shaped hole, and the second positioning member is movably disposed on the positioning plate through the second kidney-shaped hole.

Technical Field

The invention relates to the technical field of bearing measurement, in particular to a method and a device for measuring a bearing flange.

Background

Along with the use of roller bearing, bearing inner race flange angle can change, in order to guarantee roller bearing's result of use, need carry out periodic detection to roller bearing's flange. However, when an operator uses the detection device for detection, due to the influence of the self structure of the roller bearing, the operation difficulty is high, and the accuracy of measuring the flange angle of the roller bearing is influenced.

Disclosure of Invention

Therefore, it is necessary to provide a bearing flange measuring device for solving the problem of low accuracy in measuring the flange angle of the roller bearing.

A bearing flange measuring device. The bearing flange measuring method comprises the following steps: placing the bearing to be tested on a positioning device for positioning; selecting a first measuring section with a preset length at the raceway side of the bearing to be measured, and selecting a second measuring section with a preset length at the flange side of the bearing to be measured; a first included angle is formed between the first measuring section and the second measuring section, and the angle value of the first included angle is measured; measuring the inclination angle of the raceway side of the bearing to be measured relative to the horizontal plane of the bearing to be measured; and calculating the angle of the flange of the bearing to be measured by the angle of 90 degrees to the first included angle plus the inclination angle of the raceway.

The bearing flange measuring device adopts the bearing measuring method and further comprises the following steps: positioning mechanism and detection mechanism, positioning mechanism is used for installing the bearing that awaits measuring, detection mechanism with positioning mechanism counterpoints the setting, just detection mechanism is used for right the bearing that awaits measuring measures.

In one embodiment, the positioning mechanism comprises a mounting base, a first moving component, a second moving component and an angle adjusting component, wherein the first moving component is movably arranged on the mounting base, the second moving component is movably arranged on the first moving component, the angle adjusting component is movably arranged on the second moving component, and the angle adjusting component is used for placing the bearing to be tested.

In one embodiment, the first moving assembly includes a first moving seat, a first transmission member and a first rotation member, the mounting base is provided with a first slide rail, the first moving seat is slidably engaged with the mounting base through the first slide rail, the first transmission member is mounted on the first moving seat, and the first rotation member is in transmission engagement with the first transmission member.

In one embodiment, the second moving assembly includes a second moving base, a second transmission member and a second rotating member, the first moving base is provided with a second sliding rail, the second moving base is slidably engaged with the mounting base through the second sliding rail, the second transmission member is mounted on the second moving base, and the second rotating member is engaged with the second transmission member in a transmission manner.

In one embodiment, the angle adjusting assembly comprises a rotating base, a third transmission member, a third rotating member and a positioning disc, wherein a rotating groove is formed in the second moving base, the rotating base passes through the rotating groove and is rotatably installed on the second moving base, the third transmission member is installed on the rotating base, the third rotating member is installed on the second moving base, one end of the third rotating member is in transmission fit with the third transmission member, one end of the third rotating member extends out of the second moving base, the positioning disc is installed on the rotating base, and the positioning disc is used for placing the bearing to be tested.

In one embodiment, a clamping groove is formed in one surface, facing the positioning disc, of the rotating seat, and a clamping portion opposite to the clamping groove is formed in one surface, facing the rotating seat, of the positioning disc.

In one embodiment, the angle adjusting assembly further comprises a supporting plate and a fixing member, the supporting plate is installed and matched with the second movable base, and the positioning plate is fixedly matched with the plate surface of the supporting plate through the fixing member.

In one embodiment, the angle adjusting assembly further includes a first positioning element and a second positioning element, the first positioning element and the second positioning element are disposed on the positioning plate at an interval, and both the first positioning element and the second positioning element are used for positioning and supporting the bearing to be measured.

In one embodiment, the positioning plate is further provided with a first waist-shaped hole and a second waist-shaped hole, the first positioning element is movably mounted on the positioning plate through the first waist-shaped hole, and the second positioning element is movably mounted on the positioning plate through the second waist-shaped hole.

When the bearing flange measuring device is used, the side of the bearing flange is adjacent to the side of the bearing roller way according to the structure of the bearing to be measured. According to the detection position or the detection range of the detection equipment, the bearing to be detected is firstly placed on the positioning device for fixing, for example: after the bearing to be detected is placed on the positioning device, the bearing to be detected can form an included angle of 30 degrees relative to a supporting surface (such as a table top or a table top), and at the moment, the detection equipment can measure the roller side and the flange side of the bearing more conveniently. This is just one embodiment, and the included angle between the bearing to be measured and the supporting surface can be changed correspondingly by the positioning device according to the requirements of the detection equipment. And then, selecting a first measuring section and a second measuring section with preset lengths at the raceway side and the flange side according to the internal structure of the bearing to be measured. For example: the first measuring section and the second measuring section are selected to ensure that the detection equipment can carry out effective and sufficient detection activities so as to ensure the accuracy of the detection equipment for measuring the angle of the first included angle. Secondly, the bearing raceway side has an inclination angle relative to a bearing surface (for example, a surface of the bearing to be detected, which is in contact with the positioning device) of the bearing, and the inclination angle affects the flange angle of the bearing to be detected, so that the inclination angle of the raceway is measured by the detection equipment, and finally, the flange angle of the bearing to be detected is obtained by calculating the 90-first included angle and the inclination angle of the raceway. According to the bearing flange measuring method, the final flange angle is obtained by sequentially measuring the relative angles of the roller path side and the flange side of the bearing to be measured, so that the accuracy of measuring the flange angle of the roller bearing is effectively ensured.

When the bearing flange measuring device is used, the bearing to be measured is firstly positioned and fixed through the positioning mechanism, so that the detection mechanism can be ensured to effectively detect the bearing to be measured. The bearing flange measuring device realizes the sequential measurement of the relative angles of the roller side and the flange side of the bearing to be measured through the bearing flange measuring method to obtain the final flange angle, thereby effectively ensuring the accuracy of the measurement of the flange angle of the roller bearing.

Drawings

FIG. 1 is a flow chart of a bearing rib measurement method;

FIG. 2 is a schematic structural diagram of a bearing rib measuring device according to an embodiment;

FIG. 3 is a schematic structural diagram of a bearing rib measuring device according to another embodiment;

FIG. 4 is a schematic structural diagram of a bearing rib measuring device according to yet another embodiment;

fig. 5 is a schematic cross-sectional structure diagram of a bearing to be tested.

100. The positioning mechanism comprises a positioning mechanism 101, an installation base 110, a first moving assembly 111, a first moving seat 112, a first rotating piece 120, a second moving assembly 121, a second moving seat 122, a second rotating piece 130, an angle adjusting assembly 131, a rotating seat 132, a third rotating piece 133, a positioning disc 134, a supporting plate 135, a first positioning piece 136, a second positioning piece 137, a first kidney-shaped hole 200, a bearing to be measured 210, a raceway side 220, a flange side 230, a first included angle 240, a raceway inclination angle 250 and a flange angle.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 5, in one embodiment, a bearing rib measuring method includes the following steps: placing the bearing 200 to be tested on a positioning device for positioning; selecting a first measuring section with a preset length on the raceway side 210 of the bearing 200 to be measured, and selecting a second measuring section with a preset length on the flange side 220 of the bearing 200 to be measured; a first included angle is formed between the first measuring section and the second measuring section, and the angle value of the first included angle is measured; measuring a raceway inclination angle 240 of the raceway side 210 of the bearing 200 to be measured relative to a horizontal plane of the bearing 200 to be measured; and calculating the 90-first included angle 230+ the raceway inclination angle 240 to obtain the flange angle 250 of the bearing 200 to be measured.

When the bearing flange measuring device is used, the bearing flange side 220 is adjacent to the bearing raceway side 210 according to the structure of the bearing 200 to be measured. According to the detection position or detection range of the detection device, the bearing 200 to be detected is firstly placed on the positioning device for fixing, for example: after the bearing 200 to be measured is placed on the positioning device, the bearing 200 to be measured may form an included angle of 30 ° with respect to a supporting surface (e.g., a table top or a table top), which may be more convenient for the detection equipment to measure the raceway side 210 and the flange side 220 of the bearing. This is just one example, and the included angle between the bearing 200 to be measured and the supporting surface can be changed by the positioning device according to the requirement of the detection equipment. Then, a first measurement section and a second measurement section with preset lengths are selected on the raceway side 210 and the flange side 220 according to the internal structure of the bearing 200 to be measured. For example: the first measurement section and the second measurement section are selected to ensure that the detection device can perform effective and sufficient detection activities, so as to ensure the accuracy of the detection device in measuring the first included angle 230. Secondly, the bearing raceway side 210 has an inclination angle with respect to a bearing surface (for example, a surface of the bearing 200 to be tested contacting the positioning device), and the inclination angle affects the flange angle 250 of the bearing 200 to be tested, so that the raceway inclination angle 240 is measured by the detection equipment, and finally, the flange angle 250 of the bearing 200 to be tested is obtained by calculating 90 ° -the first included angle 230+ the raceway inclination angle 240. According to the bearing flange measuring method, the final flange angle 250 is obtained by sequentially measuring the relevant angles of the track side 210 and the flange side 220 of the bearing 200 to be measured, so that the accuracy of measuring the flange angle 250 of the roller bearing is effectively ensured.

With reference to fig. 2 to 5, in an embodiment, a bearing rib measuring apparatus using the bearing measuring method further includes: positioning mechanism 100 and detection mechanism, positioning mechanism 100 is used for installing bearing 200 that awaits measuring, detection mechanism with positioning mechanism 100 counterpoints the setting, just detection mechanism is used for right bearing 200 that awaits measuring measures.

When the bearing flange measuring device is used, the bearing 200 to be measured is firstly positioned and fixed through the positioning mechanism 100, so that the detection mechanism can be ensured to effectively detect the bearing 200 to be measured. The bearing flange measuring device realizes the sequential measurement of the relevant angles of the raceway side 210 and the flange side 220 of the bearing to be measured 200 through the bearing flange measuring method to obtain the final flange angle 250, thereby effectively ensuring the accuracy of the measurement of the flange angle 250 of the roller bearing.

Referring to fig. 2 to 4, in an embodiment, the positioning mechanism 100 includes a mounting base 101, a first moving component 110, a second moving component 120, and an angle adjusting component 130, the first moving component 110 is movably mounted on the mounting base, the second moving component is movably mounted on the first moving component 110, the angle adjusting component 130 is movably mounted on the second moving component 120, and the angle adjusting component 130 is used for placing the bearing 200 to be tested. In particular, the detection mechanism is a profilometer or a taylor instrument. The first moving element 110 and the second moving element 120 may be moving plates or moving blocks. When the bearing 200 to be measured is measured, the mounting base 101 may be fixed on a supporting surface (table top or table top) through a pin or a bolt, thereby preventing the mounting base 101 from moving on the supporting surface. Further, the angle adjusting assembly 130 is a movable seat or a mounting seat for driving a rotating shaft, and the flange side 220 and the raceway side 210 of the bearing 200 to be detected are both located inside the bearing 200 to be detected, so that the angle of the bearing 200 to be detected relative to the detection mechanism is changed through the angle adjusting assembly 130, and the detection mechanism can detect the bearing 200 to be detected more conveniently.

Referring to fig. 2 to 4, in an embodiment, the first moving assembly 110 includes a first moving seat 111, a first transmission member and a first rotating member 112, the mounting base is provided with a first slide rail, the first moving seat 111 is slidably engaged with the mounting base 101 through the first slide rail, the first transmission member is mounted on the first moving seat 111, and the first rotating member 112 is in transmission engagement with the first transmission member. Specifically, the first movable seat 111 is a plate or a block. The first transmission member is a transmission wheel or a transmission belt, and the first rotation member 112 is a gear or a rotating shaft. First, the first movable base 111 is mounted on the mounting base 101 through a first slide rail, so as to ensure that the first movable base 111 can move in a preset direction when moving. The number of the first slide rails can be flexibly selected according to installation requirements so as to ensure the limiting effect on the first movable seat 111. Further, through the contact and cooperation of the first rotating member 112 and the first transmission member, the worker can realize transmission with the first transmission member by rotating or adjusting the first rotating member 112, so as to realize the movement of the first movable seat 111 relative to the installation base 101. Furthermore, the installation length of the first transmission member can be determined according to the moving range of the first moving seat 111 relative to the installation base 101, so as to ensure that the first rotation member 112 can sufficiently drive the first moving seat 111 to move.

Referring to fig. 2 to 4, in an embodiment, the second moving assembly 120 includes a second moving base 121, a second transmission member and a second rotating member 122, the first moving base 111 is provided with a second sliding rail, the second moving base 121 is slidably engaged with the mounting base 101 through the second sliding rail, the second transmission member is mounted on the second moving base 121, and the second rotating member 122 is in transmission engagement with the second transmission member. Specifically, the second movable seat 121 is a plate or a block. The second transmission member is a transmission gear or a transmission belt, and the second rotation member 122 is a gear or a rotation shaft. First, the second movable base 121 is mounted on the first movable base 111 through a second slide rail, so that the second movable base 121 can move in a predetermined direction when moving. The number of the second slide rails can be flexibly selected according to installation requirements so as to ensure the limiting effect on the second movable seat 121. At this time, the front and rear adjustment of the bearing 200 to be tested can be realized by the first movable base 111, and the left and right adjustment of the bearing 200 to be tested can be realized by the second movable base 121. Further, the second transmission member and the second movable seat 121 may be fixed by splicing or integrally formed. Then, through the contact and cooperation between the second rotating member 122 and the second transmission member, the worker can realize the transmission with the second transmission member by rotating or adjusting the second rotating member 122, so as to realize the movement of the second movable base 121 relative to the installation base 101. Furthermore, the installation length of the second transmission member can be determined according to the moving range of the second moving seat 121 relative to the installation base 101, so as to ensure that the second rotating member 122 can sufficiently drive the second moving seat 121 to move.

Referring to fig. 2 to 4, in an embodiment, the angle adjustment assembly 130 includes a rotating base 131, a third transmission member, a third rotating member 132 and a positioning plate 133, the second moving base 121 is provided with a rotating groove, the rotating base 131 is rotatably mounted on the second moving base 121 through the rotating groove, the third transmission member is mounted on the rotating base 131, the third rotating member 132 is mounted on the second moving base 121, one end of the third rotating member 132 is in transmission fit with the third transmission member, one end of the third rotating member 132 extends out of the second moving base 121, the positioning plate 133 is mounted on the rotating base 131, and the positioning plate 133 is used for placing the bearing 200 to be tested. Specifically, a rotating portion (a rotating shaft or a rotating disk) is disposed on one surface of the rotating base 131, and a rotating groove that is rotatably engaged with the rotating portion is disposed on the second moving base 121. The third transmission member is a transmission gear or a transmission belt, and the third rotation member 132 is a gear or a rotation shaft. After the rotating base 131 is mounted on the second movable base 121, the size of the positioning plate 133 is determined according to the size of the bearing 200 to be tested, the positioning plate 133 is mounted on the rotating base 131, and then the bearing 200 to be tested is mounted on the positioning plate 133. Further, the third transmission member can be spliced or integrally formed with the rotating base 131, one end of the third rotating member 132 is in transmission contact with the third transmission member, and the worker can adjust the angle of the rotating base 131 relative to the second movable base 121 by rotating or adjusting the third rotating member 132.

In one embodiment, a clamping groove is formed in a surface of the rotating base 131 facing the positioning plate 133, and a clamping portion opposite to the clamping groove is formed in a surface of the positioning plate 133 facing the rotating base 131. Specifically, the clamping portion may be a bump or a buckle. In this embodiment, the clamping portion is integrally formed with the positioning plate 133, for example: the joint portion is the V-arrangement piece, and the joint groove is the V-arrangement groove, can fully restrict the removal of positioning disk 133 for rotating seat 131 through going into the V-arrangement piece V-arrangement groove to play supplementary fixed effect.

As shown in fig. 2 to 4, in one embodiment, the angle adjustment assembly 130 further includes a supporting plate 134 and a fixing member, the supporting plate 134 is installed and matched with the second movable seat 121, and the positioning plate 133 is fixedly matched with a plate surface of the supporting plate 134 through the fixing member. Specifically, the fixing piece is a fixing bolt or a buckle. The support plate 134 is fixed to the second movable base 121, for example: offer the joint groove along the axial direction who rotates seat 131, after positioning disk 133 and the installation cooperation of rotating seat 131, can effectively prevent positioning disk 133 for the lateral shifting who rotates seat 131 through the joint cooperation in joint portion and joint groove. At this time, the supporting member is located at the end of the rotating seat 131, and after the positioning disc 133 is installed on the rotating seat 131, the positioning disc 133 is installed and fixed with the supporting member through the fixing member, so that the axial movement of the positioning disc 133 relative to the rotating seat 131 can be effectively avoided. The above embodiment effectively ensures the fixing effect of the positioning disc 133 and the rotating seat 131 through the supporting member, the clamping portion and the clamping groove.

As shown in fig. 4, in an embodiment, the angle adjusting assembly 130 further includes a first positioning element 135 and a second positioning element 136, the first positioning element 135 and the second positioning element 136 are disposed on the positioning plate 133 at intervals, and both the first positioning element 135 and the second positioning element 136 are used for positioning and supporting the bearing 200 to be tested. Specifically, the first positioning element 135 and the second positioning element 136 are positioning blocks or positioning rods. The bearing 200 to be tested is supported and abutted by the first positioning member 135 and the second positioning member 136, so that the bearing 200 to be tested can be prevented from moving on the positioning plate 133 accidentally.

Referring to fig. 4, in an embodiment, a first kidney-shaped hole 137 and a second kidney-shaped hole are further disposed on the positioning plate 133, the first positioning element 135 is movably disposed on the positioning plate 133 through the first kidney-shaped hole 137, and the second positioning element 136 is movably disposed on the positioning plate 133 through the second kidney-shaped hole. Specifically, the above embodiment can realize the movement adjustment of the first positioning element 135 and the second positioning element 136 on the positioning plate 133, and realize that the first positioning element 135 and the second positioning element 136 can fix the bearings 200 to be measured with different sizes.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.