A multi-point testing device for bearing steel ball strength

Abstract

The invention relates to a bearing steel ball strength multi-point testing device applied to the field of experimental detection technology. The device comprises a base, a test bench, a steel ball, an air hammer impact module, a rotating shaft, a ring disk, a cleaning brush, an electromagnetic ring, a solid magnetic ring, a thrust spring and a power module. The ring disk of the invention is used to fix the steel ball by the elastic force of the thrust spring, and then the steel ball is subjected to strength test by the air hammer impact module. Before the test is performed again, the electromagnetic ring is selectively energized, and the electromagnetic ring generates magnetic force to adsorb the steel ball, and the squeezing force between the ring disk and the steel ball is increased by the repulsive force between the solid magnetic ring and the electromagnetic ring, thereby enhancing the rotation influence of the rotating shaft on the steel ball, so as to effectively improve the point rotation adjustment stability of the steel ball and effectively avoid the slipping of the steel ball. Both rotating shafts can adjust the rotation point of the steel ball, so as to realize the all-round point rotation ability of the steel ball and effectively improve the point adjustment accuracy of the steel ball.

Description

Technical Field

[0001] The invention relates to a steel ball strength testing device, in particular to a bearing steel ball strength multi-point testing device applied in the field of experimental detection technology. Background Art

[0002] Bearing steel balls are a part used in industrial production and are part of the bearing. Steel balls are an important component that enables the bearing to achieve rolling and rotating movements. The steel balls need to withstand the large forces brought by the shaft members of the bearing. Therefore, the strength of the bearing steel balls determines the structural strength of the bearing. Before the bearing is assembled, the bearing steel balls need to be strength tested.

[0003] The specification of Chinese invention patent CN202011602609.8 discloses "A test bench for strength testing of bearing steel balls with automatically rotating test surfaces". The power is provided by an air hammer, which can not only stably clamp the steel ball and make it difficult to move, but also increase the safety during the test. The rotating rod and the reciprocating screw rotate, and the movement of the sliding plate is used to realize the rolling of the steel ball, so that the steel ball can be subjected to multiple strength tests. The strength test block is against the top of the steel ball, and the steel ball test is more stable.

[0004] Traditional steel ball strength tests mostly use hydraulic presses for stamping inspections, and the steel ball can only be tested at a single point. The above patent adjusts multiple points by rolling the steel ball, but the sliding plate pulls the bottom of the steel ball horizontally, but the steel ball is clamped by the vertical plate, and the contact area between the steel ball and the sliding plate is relatively small, so the steel ball is prone to slipping. The steel ball cannot accurately perform point rolling adjustment, affecting the accuracy of the steel ball's multi-point strength test, and the rolling direction of the steel ball is fixed, and the steel ball cannot be tested at other positions except the rolling direction. Therefore, the multi-point strength test of the steel ball is not comprehensive enough. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the steel ball is prone to slipping during the rolling process, which affects the accuracy of the multi-point strength test of the steel ball. In addition, the rolling direction of the steel ball is fixed, and other positions of the steel ball except the rolling direction cannot be tested. Therefore, the multi-point strength test of the steel ball is not comprehensive enough.

[0006] In order to solve the above problems, the present invention provides a bearing steel ball strength multi-point testing device, comprising a base, a test bench is fixedly connected to the middle of the base, a steel ball is placed in the middle of the test bench, an air hammer impact module is fixedly connected to the top rear end of the base, and the output end of the air hammer impact module is vertically corresponding to the test bench;

[0007] The middle ends of the test bench are movably connected with rotating shafts, and the two rotating shafts are arranged vertically and correspondingly. One end of the rotating shaft is fixedly connected with a circle disk, which is in contact with the steel ball, and the contact surface of the circle disk and the steel ball is fixedly connected with a cleaning brush. The back of the circle disk is fixedly connected with an electromagnetic ring. The bottom ends of the air hammer impact module are fixedly connected with solid magnetic rings, which are sleeved with the rotating shaft, and a thrust spring is sleeved between the solid magnetic ring and the electromagnetic ring. The solid magnetic ring and the electromagnetic ring are arranged to repel each other magnetically. The back of the air hammer impact module is fixedly connected with a power module, and the two rotating shafts are transmission-connected to the output end of the power module.

[0008] In the above-mentioned bearing steel ball strength multi-point testing device, the steel ball is contacted by the ring disks on the two rotating shafts, and the electromagnetic ring is selectively energized to strengthen the adsorption and contact of the ring disk on the steel ball through the magnetic force, so as to adjust the rotation of the steel ball, facilitate the multi-point strength test of the steel ball, and effectively improve the strength test accuracy of the steel ball.

[0009] As a further improvement of the present application, the contact surface between the ring disk and the steel ball is concave, and the ring disk and the cleaning bristles are both made of wear-resistant rubber material. The concave ring disk can better contact the steel ball, and the ring disk and cleaning bristles made of wear-resistant rubber material effectively increase their service life.

[0010] As a further improvement of the present application, a buffer bag is fixedly connected to the surface of the ring disk around the periphery of the roots of the cleaning bristles, and the gaps between the cleaning bristles and the buffer bag correspond to each other. The buffer bag is utilized to improve the extrusion buffering capacity between the ring disk and the steel ball, and to facilitate the bending of the cleaning bristles into the gap between the buffer bag, thereby effectively reducing the wear of the cleaning bristles and extending the service life of the cleaning bristles.

[0011] As a further improvement of the present application, the power module includes a pneumatic push rod and a movable rack fixedly connected to the output end of the pneumatic push rod. A driving gear is sleeved on the end of the rotating shaft away from the ring disk. The movable rack is meshed with the driving gear. The pneumatic push rod pushes the movable rack up and down, and the driving gear is driven by the meshing of the movable rack to realize the rotation adjustment of the rotating shaft.

[0012] As another improvement of the present application, a sliding groove is provided on the surface of the end of the rotating shaft away from the ring disk, and a sliding block is fixedly connected to the inner ring surface of the driving gear. The sliding block is slidably connected to the sliding groove, and the driving gear drives the rotating shaft by sliding between the sliding block and the sliding groove without affecting the telescopic movement of the rotating shaft.

[0013] As another improvement supplement of the present application, the front end of the test bench is slidingly connected with a limiting front stopper, which is arranged in a semicircular shape, and the limiting front stopper and the test bench form a circular structure. The limiting front stopper and the test bench are combined to form a stable circular structure, which facilitates the stable placement of the steel ball, and after the steel ball is deformed, the deformed steel ball can be quickly removed by removing the limiting front stopper.

[0014] As another improvement supplement of the present application, a clamping module is fixedly connected to the bottom of the air hammer impact module, and the clamping module corresponds horizontally to the limiting front stop. The left and right ends of the limiting front stop are rotatably connected with rotating top buttons, and the two rotating top buttons correspond to two rotating axes respectively. The clamping module applies pressure to the steel ball toward the limiting front stop to clamp and fix the steel ball. The rotating top button corresponds to the rotating axis, providing a fulcrum for the resistance rotation of the steel ball, effectively improving the rotation adjustment stability of the steel ball.

[0015] As another improvement of the present application, a storage groove is provided in the inner ring of the bottom of the test bench, and a cleaning ring is fixedly connected to the bottom of the limiting front block. The cleaning ring and the storage groove are correspondingly engaged. The engagement of the cleaning ring and the storage groove effectively improves the combined stability of the test bench and the limiting front block, and when the limiting front block is removed, the cleaning ring pushes out and cleans the debris on the test bench.

[0016] As another improved supplement of the present application, an adsorption ring is fixedly embedded in the middle of the inner ring of the cleaning ring. The adsorption ring is made of magnetic material. The adsorption ring is used to adsorb the debris falling from the steel ball, which is convenient for the concentration of the debris and the subsequent cleaning of the debris.

[0017] As another improvement supplement of the present application, a laying washer ring is fixedly connected to the bottom of the adsorption ring. The laying washer ring is flat and the inner diameter of the adsorption ring is smaller than the inner diameter of the adsorption ring. By fixing the laying washer ring at the bottom of the adsorption ring, the adsorbed debris can stay on the laying washer ring, and the subsequent cleaning of the debris is convenient.

[0018] To summarize, the present invention places a steel ball on a test bench, a ring disk fixes the steel ball through the elastic force of a thrust spring, and then uses an air hammer impact module to perform a strength test on the steel ball. Before testing again, the electromagnetic coil is selectively energized, the electromagnetic coil generates a magnetic force to adsorb the steel ball, and the repulsive force between the solid magnetic coil and the electromagnetic coil increases the squeezing force between the ring disk and the steel ball, thereby enhancing the ability of the rotating shaft to influence the rotation of the steel ball, thereby effectively improving the stability of the point rotation adjustment of the steel ball and effectively avoiding the slipping of the steel ball. Both rotating shafts can adjust the rotation point of the steel ball to achieve the all-round point rotation ability of the steel ball, effectively improving the point adjustment accuracy of the steel ball, thereby effectively improving the accuracy of the multi-point strength test of the steel ball, and the rotating shaft that does not apply a rotational force to the steel ball cleans the surface of the steel ball through the cleaning bristles on the ring disk, thereby effectively reducing the influence of debris on the steel ball test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front perspective structural diagram of the first embodiment of the present application;

[0020] Figure 2 This is a rear perspective structural diagram of the first embodiment of the present application;

[0021] Figure 3 A top view of a test bench according to a first embodiment of the present application;

[0022] Figure 4 This is a three-dimensional structural diagram of the rotating shaft of the first embodiment of the present application;

[0023] Figure 5 This is a three-dimensional structural diagram of the rotating shaft in the first embodiment of the present application without the solid magnetic ring;

[0024] Figure 6 This is a three-dimensional structural diagram of a power module according to the first embodiment of the present application;

[0025] Figure 7 This is a cross-sectional view of the first embodiment of the present application in which the ring disc abuts against and squeezes the steel ball;

[0026] Figure 8 A three-dimensional structural diagram of the front block state is taken out for the second embodiment of the present application;

[0027] Fig. 9 This is a three-dimensional structural diagram of the front barrier limited by the second embodiment of the present application;

[0028] Fig.10 This is a cross-sectional view of the front window limiting the second embodiment of the present application.

[0029] Description of the numbers in the figure:

[0030] 1. Base; 101. Test bench; 102. Steel ball; 103. Air hammer impact module; 2. Rotating shaft; 201. Ring plate; 202. Cleaning brush; 203. Electromagnetic coil; 204. Solid magnetic coil; 205. Thrust spring; 206. Buffer bag; 3. Power module; 301. Pneumatic push rod; 302. Movable rack; 303. Driving gear; 304. Slide groove; 305. Slider; 4. Limit front stop; 401. Clamping module; 402. Rotating top button; 403. Storage slot; 404. Cleaning ring; 405. Adsorption ring; 406. Paving ring. DETAILED DESCRIPTION

[0031] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] Figure 1-6A multi-point strength testing device for a bearing steel ball is shown, comprising a base 1, a test bench 101 is fixedly connected to the middle of the base 1, a steel ball 102 is placed in the middle of the test bench 101, an air hammer impact module 103 is fixedly connected to the top rear end of the base 1, and the output end of the air hammer impact module 103 corresponds vertically to the test bench 101; both ends of the middle part of the test bench 101 are movably connected to a rotating shaft 2, the two rotating shafts 2 are vertically arranged, one end of the rotating shaft 2 is fixedly connected to a ring disk 201, the ring disk 201 is in corresponding contact with the steel ball 102, the back of the ring disk 201 is fixedly connected to an electromagnetic ring 203, both ends of the bottom of the air hammer impact module 103 are fixedly connected to a solid magnetic ring 204, the solid magnetic ring 204 is sleeved with the rotating shaft 2, and a thrust spring 205 is sleeved between the solid magnetic ring 204 and the electromagnetic ring 203, the solid magnetic ring 204 and the electromagnetic ring 203 are arranged to repel each other magnetically, and the air hammer impact The back of the module 103 is fixedly connected with a power module 3, and both rotating shafts 2 are drivingly connected with the output end of the power module 3. The power module 3 includes a pneumatic push rod 301 and a movable rack 302 fixedly connected to the output end of the pneumatic push rod 301. A driving gear 303 is sleeved on the end of the rotating shaft 2 away from the ring disk 201, and the movable rack 302 is meshed with the driving gear 303. The pneumatic push rod 301 pushes the movable rack 302 to rise and fall, and the driving gear 303 is driven by the meshing of the movable rack 302 to realize the rotation adjustment of the rotating shaft 2. A sliding groove 304 is provided on the surface of the end of the rotating shaft 2 away from the ring disk 201, and a slider 305 is fixedly connected to the inner ring surface of the driving gear 303. The slider 305 is slidably connected to the sliding groove 304, and the sliding of the slider 305 and the sliding groove 304 is utilized to realize that the driving gear 303 drives the rotating shaft 2 without affecting the telescopic movement of the rotating shaft 2.

[0034] When performing a strength test on the steel ball 102, the steel ball 102 is placed on the test bench 101, and the ring plate 201 is pushed by the elastic force of the thrust spring 205 to contact the fixed steel ball 102, so that the state of the steel ball 102 is prepared, and then the air hammer impact module 103 descends to perform a strength test on the steel ball 102. When the detection point of the steel ball 102 needs to be adjusted later, the electromagnetic coil 203 is selectively energized, that is, the steel ball 102 needs to rotate in which direction, and the corresponding rotation axis 2 and the electric The magnetic circle 203 and the electromagnetic circle 203 generate magnetic force to adsorb the steel ball 102, and the extrusion force between the circle disk 201 and the steel ball 102 is increased through the repulsive force between the solid magnetic circle 204 and the electromagnetic circle 203, thereby enhancing the rotation influence of the rotating shaft 2 on the steel ball 102, thereby effectively improving the point rotation adjustment stability of the steel ball 102, effectively avoiding the slipping of the steel ball 102, facilitating the precise adjustment of the steel ball 102 to the specified point, and effectively improving the accuracy of the multi-point strength test of the steel ball 102.

[0035] Figure 1-7As shown, the contact surface between the ring disk 201 and the steel ball 102 is fixedly connected with the cleaning bristles 202, and the contact surface between the ring disk 201 and the steel ball 102 is concave. The ring disk 201 and the cleaning bristles 202 are both made of wear-resistant rubber material. The concave ring disk 201 can better contact with the steel ball 102, and the ring disk 201 and the cleaning bristles 202 made of wear-resistant rubber material effectively improve the service life. The surface of the ring disk 201 is fixedly connected with a buffer bag 206 around the root periphery of the cleaning bristles 202. The gap between the cleaning bristles 202 and the buffer bag 206 corresponds. The buffer bag 206 is used to improve the extrusion buffering capacity between the ring disk 201 and the steel ball 102, and it is convenient for the cleaning bristles 202 to bend into the gap between the buffer bag 206, effectively reducing the wear of the cleaning bristles 202, thereby extending the service life of the cleaning bristles 202.

[0036] When the point rotation adjustment of the steel ball 102 is performed, the rotating shaft 2 that does not apply rotational force to the steel ball 102 is also affected by the rotation of the power module 3. The rotating shaft 2 cleans the surface of the steel ball 102 through the cleaning bristles 202 on the ring disk 201, effectively reducing the impact of debris on the steel ball test, and the rotating shaft 2 that applies rotational force presses the steel ball tightly. The difference in the resistance pressure of the two rotating shafts 2 on the steel ball 102 is relatively large. The buffer bag 206 on the surface of the ring disk 201 buffers the resistance pressure, and when the ring disk 201 is subjected to a large resistance pressure, the cleaning bristles 202 are bent into the gap between the buffer bags 206, and the exposed area of ​​the cleaning bristles 202 is reduced, thereby effectively reducing the wear of the cleaning bristles 202, thereby extending the service life of the cleaning bristles 202.

[0037] The second implementation method:

[0038] Compared with the first embodiment, this embodiment mainly adds a limiting front block 4, and the specific newly added structure is as follows, and the remaining structures are consistent with the first embodiment.

[0039] Figure 1 , Figure 3 and Figure 8-9It is shown that the front end of the test bench 101 is slidably connected with a limiting front stopper 4, which is arranged in a semicircular shape, and the limiting front stopper 4 and the test bench 101 form a circular structure. The limiting front stopper 4 and the test bench 101 are combined to form a stable circular structure, which is convenient for the stable placement of the steel ball 102, and after the steel ball 102 is deformed, the limiting front stopper 4 is removed to facilitate the rapid removal of the deformed steel ball 102. The bottom of the air hammer impact module 103 is fixedly connected with a clamping module 401, and the clamping module 401 corresponds horizontally to the limiting front stopper 4. When the strength test of the steel ball 102 is performed, the clamping module 401 applies pressure to the limiting front stopper 4 on the steel ball 102 to achieve clamping and fixing of the steel ball 102. The left and right ends of the limiting front stopper 4 are rotatably connected with a rotating top button 402, and the two rotating top buttons 402 correspond to the two rotating shafts 2 respectively. The rotating top button 402 corresponds to the rotating shaft 2, providing a fulcrum for the resistance rotation of the steel ball 102, and effectively improving the rotation adjustment stability of the steel ball 102.

[0040] The limiting front stop 4 is combined with the test bench 101 to form an annular steel ball 102 placement structure, which effectively limits the position of the steel ball 102. At the same time, the clamping module 401 applies pressure to the limiting front stop 4 on the steel ball 102 to achieve clamping and fixing of the steel ball 102. After the steel ball 102 is deformed by the impact, the steel ball 102 generally tends to deform in a flat direction, and the outer ring diameter of the steel ball 102 becomes larger, which is easy to get stuck on the test bench 101. When the steel ball 102 is deformed and stuck, the limiting front stop 4 is directly removed to facilitate the rapid removal of the deformed steel ball 102. The rotating top button 402 corresponds to the rotating axis 2 to provide a fulcrum for the resistance rotation of the steel ball 102, thereby effectively improving the rotation adjustment stability of the steel ball 102.

[0041] Figure 8-10 As shown, a receiving groove 403 is provided at the bottom inner ring of the test bench 101, and a cleaning ring 404 is fixedly connected to the bottom of the limiting front baffle 4. The cleaning ring 404 is correspondingly engaged with the receiving groove 403. The engagement of the cleaning ring 404 with the receiving groove 403 effectively improves the combined stability of the test bench 101 and the limiting front baffle 4. When the limiting front baffle 4 is removed, the cleaning ring 404 pushes out and cleans the debris on the test bench 101. An adsorption ring 405 is fixedly embedded in the middle of the inner ring of the cleaning ring 404. The adsorption ring 405 is made of magnetic material, and the adsorption ring 405 is used to adsorb the debris falling from the steel ball 102, so as to concentrate the debris and facilitate the subsequent cleaning of the debris. The bottom of the adsorption ring 405 is fixedly connected with a washer ring 406, which is flat and has an inner diameter smaller than that of the adsorption ring 405. By fixing the washer ring 406 at the bottom of the adsorption ring 405, the adsorbed debris stays on the washer ring 406, and the subsequent cleaning of the debris is convenient.

[0042] When removing the limiting front baffle 4 and cleaning the test bench 101 after the test, the limiting front baffle 4 is pulled outward. During the pulling-out process, the cleaning ring 404 leaves the receiving groove 403, and the adsorption ring 405 on the cleaning ring 404 adsorbs the debris through magnetic force, so that the debris is concentrated on the pad ring 406. In addition, when the cleaning ring 404 slides on the test bench 101, the debris on the surface of the test bench 101 is shoveled up, which is convenient for further collection of the debris, thereby effectively improving the cleaning effect of the metal debris.

[0043] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A bearing steel ball strength multi-point testing device, characterized in that: It comprises a base (1), a test bench (101) is fixedly connected to the middle of the base (1), a steel ball (102) is placed in the middle of the test bench (101), a pneumatic hammer impact module (103) is fixedly connected to the top rear end of the base (1), and an output end of the pneumatic hammer impact module (103) vertically corresponds to the test bench (101); The two ends of the middle of the test bench (101) are movably connected to a rotating shaft (2), the two rotating shafts (2) are arranged vertically and correspondingly, one end of the rotating shaft (2) is fixedly connected to a ring disk (201), the ring disk (201) is in corresponding contact with the steel ball (102), the contact surface of the ring disk (201) and the steel ball (102) is fixedly connected to a cleaning brush (202), the back of the ring disk (201) is fixedly connected to an electromagnetic coil (203), and the air hammer impact module Both ends of the bottom of (103) are fixedly connected with a solid magnetic ring (204), the solid magnetic ring (204) is sleeved with the rotating shaft (2), and a thrust spring (205) is sleeved between the solid magnetic ring (204) and the electromagnetic ring (203), the solid magnetic ring (204) and the electromagnetic ring (203) are arranged to repel each other magnetically, the back of the air hammer impact module (103) is fixedly connected with a power module (3), and the two rotating shafts (2) are both drivingly connected with the output end of the power module (3); The power module (3) comprises a pneumatic push rod (301) and a movable rack (302) fixedly connected to the output end of the pneumatic push rod (301); a driving gear (303) is sleeved on the end of the rotating shaft (2) away from the ring disk (201); the movable rack (302) meshes with the driving gear (303); a sliding groove (304) is provided on the surface of the end of the rotating shaft (2) away from the ring disk (201); a sliding block (305) is fixedly connected to the inner ring surface of the driving gear (303); and the sliding block (305) is slidably connected to the sliding groove (304).

2. A bearing steel ball strength multi-point testing device according to claim 1, characterized in that: The contact surface between the ring disk (201) and the steel ball (102) is concavely arranged, and the ring disk (201) and the cleaning brush bristles (202) are both made of wear-resistant rubber material.

3. A bearing steel ball strength multi-point testing device according to claim 2, characterized in that: A buffer bag (206) is fixedly connected to the surface of the ring disk (201) around the root periphery of the cleaning bristles (202), and the gap between the cleaning bristles (202) and the buffer bag (206) corresponds to each other.

4. A bearing steel ball strength multi-point testing device according to claim 1, characterized in that: The front end of the test bench (101) is slidably connected to a limiting front stopper (4), the limiting front stopper (4) is arranged in a semicircular shape, and the limiting front stopper (4) and the test bench (101) form a circular structure.

5. A bearing steel ball strength multi-point testing device according to claim 4, characterized in that: The bottom of the air hammer impact module (103) is fixedly connected to a clamping module (401), the clamping module (401) corresponds horizontally to the limiting front stop (4), and the left and right ends of the limiting front stop (4) are rotatably connected to rotating top buttons (402), and the two rotating top buttons (402) correspond to the two rotating shafts (2) respectively.

6. A bearing steel ball strength multi-point testing device according to claim 4, characterized in that: The inner ring of the bottom of the test bench (101) is provided with a receiving groove (403), and the bottom of the limiting front stop (4) is fixedly connected with a cleaning ring (404), and the cleaning ring (404) is correspondingly engaged with the receiving groove (403).

7. A bearing steel ball strength multi-point testing device according to claim 6, characterized in that: An adsorption ring (405) is fixedly embedded in the middle of the inner ring of the cleaning ring (404), and the adsorption ring (405) is made of a magnetic material.

8. A bearing steel ball strength multi-point testing device according to claim 7, characterized in that: A gasket ring (406) is fixedly connected to the bottom of the adsorption ring (405); the gasket ring (406) is arranged in a flat shape, and the inner diameter of the adsorption ring (405) is smaller than the inner diameter of the adsorption ring (405).

Images