Motor bearing steel ball rolling smoothness detector

Abstract

The utility model provides a motor bearing steel ball rolling smoothness detector, which relates to the technical field of bearing detection and comprises a substrate and a bearing inner ring, bearing steel balls are nested on the circumferential surface of the bearing inner ring in a circumferential array manner, bearing outer rings are nested on the surfaces of the bearing steel balls, a starting motor is fixed at the top of the substrate, and one end of the starting motor is fixed with one end of the bearing inner ring. A small-diameter cam shaft is installed to solve the problem that the price of a motor bearing steel ball rolling smoothness detector is relatively high, and for small enterprises with limited budget or users who do not need precision detection frequently, the economic burden of the equipment is often too heavy. A detector requires an operator to have a certain technical background and knowledge, an enterprise needs to carry out professional training on the operator, and as the detection steps are complex and not visual enough, the operator without the professional background is often difficult to correctly complete the operation, so that the detection efficiency is reduced, and the risk of misoperation is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing detection, in particular to a motor bearing steel ball rolling smoothness detector. Background Art

[0002] The motor bearing steel ball rolling smoothness tester is an important tool for evaluating motor bearing performance and is widely used in various industrial fields. Its applications primarily include manufacturing, equipment maintenance and repair, and quality control and assurance. The steel ball rolling smoothness tester is indispensable in motor and bearing manufacturing. It is used for quality control during the production process to ensure that bearings meet specified standards and performance requirements.

[0003] In the existing technology, the cost issue of motor bearing steel ball rolling smoothness testers poses a problem for many small-scale enterprises. These testers are usually equipped with a large number of sensors and inductors to achieve high-precision and high-stability detection performance. However, the price of such high-end equipment is also correspondingly high. For small enterprises with limited budgets or users who do not often need to perform such precision detection, investing in such equipment is often too financially burdensome. In terms of use, these advanced testers require operators to have a certain technical background and knowledge to ensure the accuracy of the detection process and the normal operation of the instrument. Therefore, enterprises need to provide professional training for operators, which adds additional costs and preparation work. Since the detection steps are complicated and not intuitive enough, it is often difficult for staff without professional background to complete the operation correctly, which reduces the detection efficiency and increases the risk of misoperation. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a motor bearing steel ball rolling smoothness detector.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a motor bearing steel ball rolling smoothness detector, comprising a base plate and a bearing inner ring, wherein the bearing inner ring circumferential surface is nested with bearing steel balls in a circular array, and the bearing outer ring is nested on the surface of the bearing steel balls, a starting motor is fixed on the top of the base plate, one end of the starting motor is fixed to one end of the bearing inner ring, a moving shaft base is fixed on the top of the base plate, a small-diameter camshaft is rotatably connected to the inner wall of the moving shaft base, a fixed ring disk is fixed to one end of the small-diameter camshaft, the inner wall of the fixed ring disk is fixed to the circumferential surface of the bearing outer ring, a circumferential groove is provided on the circumferential surface of the small-diameter camshaft, a moving column with a following groove is slidably connected to the inner wall of the circumferential groove, a moving cylinder is threadedly connected to the top of the moving column with the following groove, and the inner wall of the moving cylinder is connected to the inner wall of the moving cylinder. The circumference of the small-diameter camshaft is slidably connected, the circumference of the movable cylinder is fixed with a limiting rail, the top of the base plate is fixed with a fixed rail base, the top of the inner wall of the fixed rail base is provided with a top groove, the inner wall of the fixed rail base is slidably connected to the circumference of the movable cylinder, and limiting rail grooves are provided on both sides of the inner wall of the fixed rail base, and the inner wall of the limiting rail groove is slidably connected to the surface of the limiting rail. In the prior art, the cost issue of the motor bearing steel ball rolling smoothness tester has become a problem for many small-scale enterprises. These testers are usually equipped with a large number of sensors and inductors to achieve high-precision and high-stability detection performance. However, the price of such high-end equipment is also correspondingly high. For small enterprises with limited budgets or users who do not often need to perform such precision detection, it is not feasible to invest in such a device. The equipment is often too economically burdensome. In terms of use, these advanced detectors require operators to have a certain technical background and knowledge to ensure the accuracy of the detection process and the normal operation of the instrument. Therefore, companies need to provide professional training for operators, which adds additional costs and preparation work. Since the detection steps are complicated and not intuitive enough, it is often difficult for staff without professional background to complete the operation correctly, which reduces the detection efficiency and increases the risk of misoperation. In response to such problems, the utility model adopts the method of installing a small-diameter camshaft to solve it. When the staff needs to detect the rolling smoothness of the motor bearing steel ball, the inner ring of the bearing is fixed to the output end of the starting motor, and the fixed ring disk is fixed to the The outer ring of the bearing is fixed, and the staff starts the starting motor to drive the inner ring of the bearing to rotate continuously. Once the smooth rolling of the bearing steel ball is obstructed, the bearing steel ball will transfer the rotation to the outer ring of the bearing, causing the outer ring of the bearing to rotate. When the outer ring of the bearing rotates, it drives the small-diameter camshaft to rotate, and the groove moving column slides in the circumferential groove. At the same time, due to the matching of the limiting rail and the limiting rail groove, the movement of the moving cylinder is restricted, causing the moving cylinder to move toward the end away from the moving shaft base. Due to the friction between the components themselves, the bearing can avoid rotation caused by vibration to a certain extent. The staff can conduct smoothness tests based on the movement distance of the moving cylinder per unit time or a certain number of circles, which is convenient for the staff to observe and measure intuitively, simplify training, and achieve the effect of improving user experience.

[0006] Preferably, an arc-embedded groove is provided on the inner wall of the limiting rail groove, and a deceleration spring is fixed on one side of the limiting rail, and the surface of the deceleration spring is nested with the inner wall of the arc-embedded groove. In the prior art, when the rotation speed of the bearing outer ring is too fast or the number of revolutions within a certain period of time exceeds a set threshold, such excessive rotation can easily cause the amplitude of the limiting movable cylinder to move outward beyond the design range. Such excessive movement not only affects the accuracy of mechanical positioning, but also causes system instability and increases the risk of mechanical failure. In addition, when the rotation speed of the bearing outer ring increases, the movement of the groove moving column in the circumferential groove will also accelerate. In rapid movement, the groove moving column will move with the circumferential groove. The inner wall of the groove collides, which not only produces noise, but also leads to increased wear of components. Long-term wear will reduce the smoothness and accuracy of equipment operation, thereby shortening the service life of the equipment, increasing maintenance costs and downtime, and having a negative impact on the company's production efficiency and economic benefits. To solve this problem, the utility model adopts the method of installing a deceleration spring to solve it. When the limiting movable cylinder extends outward too quickly, once the deceleration spring reaches the arc embedded groove, the released elastic potential energy of the deceleration spring enters the arc embedded groove, causing the limiting rail to slow down, and at the same time giving feedback to the staff, so as to achieve the effect of increasing the service life of the equipment.

[0007] Preferably, a stabilizing triangle is fixed to the bottom end of the dynamic shaft base. In the prior art, the dynamic shaft base is often subjected to large vibrations during the test. Due to the presence of vibrations, bolts, screws and other fixings will gradually loosen, resulting in inaccurate component positioning, thereby affecting the accuracy and performance of the machine. In addition, continuous vibration also causes relative movement between components, causing unnecessary wear and increasing the risk of equipment failure. What is more serious is that vibration causes components to fall off. In some cases, if the vibration is too severe, the fixing structure of the component cannot withstand long-term vibration stress, which eventually causes the component to fall off from the base. Once this happens, it will not only interrupt the test process, but also pose a safety threat to surrounding equipment and operators, and mean expensive maintenance costs and downtime. To address such problems, the utility model adopts the method of installing a stabilizing triangle to solve the problem, thereby greatly increasing the fixing effect of the dynamic shaft base and the base plate through the triangular mechanism stabilized by the stabilizing triangle, preventing the component from falling off, and achieving the effect of increasing the service life of the equipment.

[0008] Preferably, the four corners of the base plate are provided with corner cutting edges to prevent scratches on users, reduce the weight of the equipment, and reduce transportation costs.

[0009] Preferably, the inclined surface of the stabilizing triangle is provided with a groove, which allows the fixing ring to be closer to the stabilizing triangle, thereby reducing the swing of the end and improving the accuracy of the equipment.

[0010] Preferably, the movable shaft base is configured as a cube with a trapezoidal cross section, which increases the contact area between components and improves stability without increasing the material consumption.

[0011] Preferably, the cross-section of the limiting rail groove and the cross-section of the limiting rail member are both set to be trapezoidal to improve the limiting effect.

[0012] Beneficial effects:

[0013] 1. In the prior art, the cost issue of motor bearing steel ball rolling smoothness testers poses a problem for many small-scale enterprises. These testers are usually equipped with a large number of sensors and inductors to achieve high-precision and high-stability detection performance. However, the price of such high-end equipment is also correspondingly high. For small enterprises with limited budgets or users who do not often need to perform such precision detection, investing in such equipment is often too economically burdensome. In terms of use, these advanced testers require operators to have a certain technical background and knowledge to ensure the accuracy of the detection process and the normal operation of the instrument. Therefore, enterprises need to provide professional training for operators, which adds additional costs and preparation work. Since the detection steps are complicated and not intuitive enough, it is often difficult for staff without professional background to complete the operation correctly, which reduces the detection efficiency and increases the risk of misoperation. To address such problems, the present utility model The model solves the problem by installing a small-diameter camshaft. When the staff needs to test the rolling smoothness of the motor bearing steel ball, the inner ring of the bearing is fixed to the output end of the starting motor, and the fixed ring is fixed to the outer ring of the bearing. The staff starts the starting motor to drive the inner ring of the bearing to rotate continuously. Once the smooth rolling of the bearing steel ball is hindered, the bearing steel ball will be transferred to the outer ring of the bearing, causing the outer ring of the bearing to rotate. When the outer ring of the bearing rotates, it drives the small-diameter camshaft to rotate, and the groove moving column slides in the circumferential groove. At the same time, due to the matching of the limiting rail and the limiting rail groove, the movement of the moving cylinder is restricted, causing the moving cylinder to move toward the end away from the moving shaft base. Due to the friction between the components themselves, the bearing can avoid rotation caused by vibration to a certain extent. The staff can conduct smoothness tests based on the movement distance of the moving cylinder per unit time or a certain number of circles, which is convenient for the staff to observe and measure intuitively, simplify training, and achieve the effect of improving user experience.

[0014] 2. In the prior art, when the rotation speed of the bearing outer ring is too fast or the number of revolutions within a certain period exceeds a set threshold, this excessive rotation can easily cause the outward movement of the limiting movable cylinder to exceed the designed range. This excessive movement not only affects the accuracy of mechanical positioning, but also causes system instability and increases the risk of mechanical failure. In addition, when the rotation speed of the bearing outer ring increases, the movement of the groove-following movable column in the circumferential groove will also accelerate. During rapid movement, the groove-following movable column will collide with the inner wall of the circumferential groove. These collisions not only generate noise but also lead to increased wear of components. Long-term wear will reduce the smoothness and accuracy of equipment operation, thereby shortening the service life of the equipment, increasing maintenance costs and downtime, and negatively affecting the production efficiency and economic benefits of the enterprise. To address such problems, the present invention adopts a method of installing a deceleration spring to solve the problem. When the limiting movable cylinder extends outward too quickly, once the deceleration spring reaches the arc groove, the deceleration spring releases its elastic potential energy and enters the arc groove, causing the limiting rail to slow down and providing feedback to the staff, thereby achieving the effect of increasing the service life of the equipment.

[0015] 3. In the prior art, the dynamic shaft base is often subjected to large vibrations during the test process. Due to the presence of vibrations, bolts, screws and other fixings will gradually loosen, resulting in inaccurate component positioning, which in turn affects the accuracy and performance of the machine. In addition, continuous vibrations also lead to relative movement between components, causing unnecessary wear and increasing the risk of equipment failure. What is more serious is that vibrations cause components to fall off. In some cases, if the vibrations are too severe, the fixing structure of the components cannot withstand long-term vibration stress, and eventually the components will fall off the base. Once this happens, it will not only interrupt the test process, but also pose a safety threat to surrounding equipment and operators, and mean expensive maintenance costs and downtime. To address such problems, the present invention adopts the method of installing a stable triangle to solve the problem, which greatly increases the fixing effect of the dynamic shaft base and the base plate through the stable triangle mechanism of the stable triangle, prevents the components from falling off, and achieves the effect of increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the movable shaft base of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the circumferential groove of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the track-fixing base of the utility model.

[0020] Legend:

[0021] 1. Base plate; 101. Starting motor; 102. Bearing inner ring; 103. Bearing steel ball; 104. Bearing outer ring; 105. Fixed ring; 2. Moving shaft base; 201. Small diameter camshaft; 202. Circumferential groove; 203. Groove-following moving column; 204. Moving cylinder; 205. Fixed rail base; 206. Limiting rail groove; 207. Limiting rail member; 3. Deceleration spring; 301. Arc embedded groove; 302. Top groove; 4. Stabilizing triangle; 401. Plate corner trimming. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0023] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment:

[0025] Reference Figure 1-4, a motor bearing steel ball rolling smoothness tester includes a base plate 1 and a bearing inner ring 102, a bearing steel ball 103 is nested in a circumferential array on the circumference of the bearing inner ring 102, a bearing outer ring 104 is nested on the surface of the bearing steel ball 103, a starting motor 101 is fixed on the top of the base plate 1, one end of the starting motor 101 is fixed to one end of the bearing inner ring 102, a moving shaft base 2 is fixed on the top of the base plate 1, a small-diameter camshaft 201 is rotatably connected to the inner wall of the small-diameter camshaft 201, a fixed ring disk 105 is fixed to one end of the small-diameter camshaft 201, the inner wall of the fixed ring disk 105 is fixed to the circumference of the bearing outer ring 104, a circumferential groove 202 is opened on the circumferential surface of the small-diameter camshaft 201, a groove-following moving column 203 is slidably connected to the inner wall of the groove-following moving column 203, and a moving cylinder is threadedly connected to the top of the groove-following moving column 203 204, the inner wall of the movable cylinder 204 is slidably connected with the circumference of the small-diameter camshaft 201, and a limiting rail 207 is fixed to the circumference of the movable cylinder 204. A fixed rail base 205 is fixed on the top of the base plate 1, and a top groove 302 is provided on the top of the inner wall of the fixed rail base 205. The inner wall of the fixed rail base 205 is slidably connected with the circumference of the movable cylinder 204, and limiting rail grooves 206 are provided on both sides of the inner wall of the fixed rail base 205. The inner wall of the limiting rail groove 206 is slidably connected with the surface of the limiting rail 207. The cost issue of the rolling smoothness tester of the motor bearing steel ball 103 poses a problem for many small-scale enterprises. These testers are usually equipped with a large number of sensors and inductors to achieve high-precision and high-stability detection performance. However, the price of such high-end equipment is also correspondingly high, which is not suitable for enterprises with limited budgets. For small businesses or users who do not often need to perform such precision inspections, investing in such equipment is often too costly. In terms of use, these advanced detectors require operators to have a certain technical background and knowledge to ensure the accuracy of the inspection process and the normal operation of the instrument. Therefore, companies need to provide professional training for operators, which adds additional costs and preparations. Since the inspection steps are complicated and not intuitive enough, it is often difficult for staff without professional background to complete the operation correctly, which reduces the inspection efficiency and increases the risk of misoperation. The solution is to install a small-diameter camshaft 201, so that when the staff needs to inspect the rolling smoothness of the motor bearing steel ball 103, the bearing inner ring 102 is installed. It is fixed to the output end of the starting motor 101, and the fixing ring disk 105 is fixed to the bearing outer ring 104. The staff starts the starting motor 101 to drive the bearing inner ring 102 to rotate continuously. Once the smooth rolling of the bearing steel ball 103 is obstructed, the bearing steel ball 103 will transfer the rotation to the bearing outer ring 104, causing the bearing outer ring 104 to rotate. When the bearing outer ring 104 rotates, it drives the small-diameter camshaft 201 to rotate, and the groove moving column 203 slides in the circumferential groove 202. At the same time, due to the matching of the limiting rail 207 and the limiting rail groove 206, the movement of the moving cylinder 204 is restricted, causing the moving cylinder 204 to move toward the end away from the moving shaft base 2. Due to the friction between the components themselves, the bearing can avoid rotation caused by vibration to a certain extent.The staff can test the smoothness according to the movement distance of the moving cylinder 204 per unit time or after a certain number of revolutions, which is convenient for the staff to observe and measure intuitively, simplifies training, and achieves the effect of improving user experience.

[0026] An arc embedded groove 301 is provided on the inner wall of the limiting rail groove 206, and a deceleration spring 3 is fixed on one side of the limiting rail 207. The surface of the deceleration spring 3 is nested with the inner wall of the arc embedded groove 301. When the rotation speed of the bearing outer ring 104 is too fast or the number of revolutions within a certain period of time exceeds the set threshold, such excessive rotation may easily cause the amplitude of the outward movement of the limiting movable cylinder 204 to exceed the design range. Such excessive movement not only affects the accuracy of mechanical positioning, but also causes system instability and increases the risk of mechanical failure. In addition, when the rotation speed of the bearing outer ring 104 increases, the movement of the groove moving column 203 in the circumferential groove 202 will also accelerate. In rapid movement, the groove moving column 20 3 will collide with the inner wall of the circumferential groove 202. These collisions will not only generate noise, but also lead to increased wear of components. Long-term wear will reduce the smoothness and accuracy of equipment operation, thereby shortening the service life of the equipment, increasing maintenance costs and downtime, and having a negative impact on the production efficiency and economic benefits of the enterprise. The problem is solved by installing a deceleration spring 3. When the limiting movable cylinder 204 extends outward too quickly, once the deceleration spring 3 reaches the arc embedded groove 301, the elastic potential energy released by the deceleration spring 3 enters the arc embedded groove 301, causing the limiting rail 207 to slow down, and at the same time giving feedback to the staff, so as to achieve the effect of improving the service life of the equipment. A stabilizing triangle 4 is fixed to the bottom of the dynamic shaft base 2. During the test, the dynamic shaft base 2 is often subjected to large vibrations. Due to the presence of vibrations, bolts, screws and other fixings will gradually loosen, resulting in inaccurate component positioning, which in turn affects the accuracy and performance of the machine. In addition, the continuous vibration causes relative movement between components, causing unnecessary wear and increasing the risk of equipment failure. More seriously, the vibration causes components to fall off. In some cases, if the vibration is too severe, the component's fixing structure cannot withstand the long-term vibration stress, eventually causing the component to fall off the base. Once this happens, it will not only interrupt the test process, but also pose a safety threat to surrounding equipment and operators, and mean expensive repair costs and downtime. The installation of a stabilizing triangle 4 solves this problem. The stabilizing triangle mechanism of the stabilizing triangle 4 greatly increases the fixing effect between the dynamic shaft base 2 and the base plate 1, preventing the component from falling off and achieving the effect of extending the service life of the equipment. The base plate 1 has corner cut edges 401 at all four corners to prevent scratches on users, reduce the weight of the equipment, and reduce transportation costs. The inclined surface of the stabilizing triangle 4 features a slot, allowing the retaining ring 105 to be closer to the stabilizing triangle 4, reducing end wobble and improving device accuracy. The movable shaft base 2 is designed as a cube with a trapezoidal cross-section. This increases the contact area between components and improves stability without increasing material consumption. The restraining rail groove 206 and the restraining rail 207 both have a trapezoidal cross-section to enhance the restraining effect.

[0027] The working principle of the utility model is as follows: when the staff needs to test the rolling smoothness of the motor bearing steel ball 103, the bearing inner ring 102 is fixed to the output end of the starting motor 101, and the fixing ring disk 105 is fixed to the bearing outer ring 104. The staff starts the starting motor 101 to drive the bearing inner ring 102 to rotate continuously. Once the rolling smoothness of the bearing steel ball 103 is blocked, the bearing steel ball 103 will transfer the rotation to the bearing outer ring 104, causing the bearing outer ring 104 to rotate. When the bearing outer ring 104 rotates, it drives the small The radial camshaft 201 rotates, and the groove moving column 203 slides in the circumferential groove 202. At the same time, due to the cooperation between the limiting rail 207 and the limiting rail groove 206, the movement of the moving cylinder 204 is restricted, so that the moving cylinder 204 moves toward the end away from the moving shaft base 2. Due to the friction between the components themselves, the bearing can avoid rotation caused by vibration to a certain extent. The staff can test the smoothness according to the movement distance of the moving cylinder 204 per unit time or a certain number of circles, which is convenient for the staff to observe and measure intuitively and simplifies training.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor bearing steel ball rolling smoothness detector, comprising a substrate (1) and a bearing inner ring (102), wherein the bearing inner ring (102) is nested with bearing steel balls (103) in a circumferential array, and the bearing steel balls (103) are nested with a bearing outer ring (104) on their surfaces, characterized in that: A starting motor (101) is fixed on the top of the base plate (1), one end of the starting motor (101) is fixed to one end of the bearing inner ring (102), a moving shaft base (2) is fixed on the top of the base plate (1), a small-diameter camshaft (201) is rotatably connected to the inner wall of the moving shaft base (2), a fixed ring disk (105) is fixed to one end of the small-diameter camshaft (201), the inner wall of the fixed ring disk (105) is fixed to the circumference of the bearing outer ring (104), a circumferential groove (202) is provided on the circumference of the small-diameter camshaft (201), the inner wall of the circumferential groove (202) is slidably connected to a groove-following moving column (203), and the groove-following moving column (203) is slidably connected to the inner wall of the groove. The top of the moving column (203) is threadedly connected to a moving cylinder (204), the inner wall of the moving cylinder (204) is slidably connected to the circumference of the small-diameter camshaft (201), a limiting rail member (207) is fixed to the circumference of the moving cylinder (204), a fixed rail base (205) is fixed to the top of the base plate (1), a top groove (302) is provided on the top of the inner wall of the fixed rail base (205), the inner wall of the fixed rail base (205) is slidably connected to the circumference of the moving cylinder (204), limiting rail grooves (206) are provided on both sides of the inner wall of the fixed rail base (205), and the inner wall of the limiting rail groove (206) is slidably connected to the surface of the limiting rail member (207).

2. The motor bearing steel ball rolling smoothness detector according to claim 1, characterized in that: An arc embedding groove (301) is provided on the inner wall of the limiting rail groove (206), a deceleration spring (3) is fixed on one side of the limiting rail member (207), and the surface of the deceleration spring (3) is nested with the inner wall of the arc embedding groove (301).

3. The motor bearing steel ball rolling smoothness detector according to claim 1, characterized in that: A stabilizing triangle (4) is fixed to the bottom end of the movable shaft base (2).

4. The motor bearing steel ball rolling smoothness tester according to claim 1, characterized in that: The four corners of the base plate (1) are all provided with plate corner cutting edges (401).

5. The motor bearing steel ball rolling smoothness tester according to claim 3, characterized in that: The slant surface of the stabilizing triangle (4) is provided with a slot.

6. The motor bearing steel ball rolling smoothness tester according to claim 1, characterized in that: The movable shaft base (2) is configured as a cube with a trapezoidal cross section.

7. The motor bearing steel ball rolling smoothness tester according to claim 1, characterized in that: The cross-sections of the limiting rail groove (206) and the limiting rail member (207) are both set to be trapezoidal.

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