A play detection device for bearing manufacturing

Abstract

The present application relates to the field of bearing measurement, in particular to a bearing manufacturing clearance detection device, including a workbench and a control cabinet, through the linkage of two groups of micrometers arranged oppositely and a transversely swingable pressing cylinder, on the basis of synchronous fixation of inner and outer rings, when the pressing cylinder drives the outer ring to swing, the two side connecting frames touch the micrometer measuring ends respectively, and the two groups of micrometers record the radial displacement of the two sides of the inner ring in real time. By comparing the two groups of data, not only the overall radial clearance value can be obtained, but also whether the two side clearances are symmetrical or exist load bias can be accurately judged, effectively overcoming the technical limitation that the existing device cannot compare the two side clearances; at the same time, the automatic centering of the micrometer is realized through the slope guidance of the positioning rod and the tapered positioning groove, the floating cooperation of the connecting cylinder and the connecting rod and the spring buffer can adapt to the bearing height, combined with the rotation of the bearing seat driven by the servo motor to obtain multi-phase clearance data, providing reliable support for comprehensive evaluation of bearing quality.

Description

Technical Field

[0001] This invention relates to the field of bearing measurement, and more specifically to a clearance testing device for bearing manufacturing. Background Technology

[0002] Bearing clearance refers to the amount of movement of a bearing when one of its inner or outer rings is fixed and the other is moved radially or axially, without being installed on a shaft or bearing housing. Depending on the measurement direction, clearance is mainly divided into radial clearance and axial clearance.

[0003] In patent application CN212030417U, published on November 27, 2020, entitled "A Bearing Clearance Detection Device," a bearing clearance detection device is disclosed. The device includes an L-shaped base, with a dial indicator mounted on its upper end. A limiting component is installed on the inner wall of the L-shaped base. The limiting component includes a support rod disposed on the inner wall of the L-shaped base, a supporting frustum mounted at the top of the support rod, and a ring mounted on the outer side of the supporting frustum. The supporting frustum has a frustum groove communicating with the ring inside, and the ring's sidewall is uniformly provided with limiting mechanisms along its circumferential direction. The bearing clearance detection device provided by this application features a limiting component. A turntable pushes the movable frustum to move via a push rod, thereby causing the limiting rod to extend or retract, achieving fixation of bearings of different sizes. Furthermore, symmetrical pads are provided on the arc-shaped plate to ensure stable fixation of the arc-shaped plate to the bearing's inner ring, ensuring the accuracy of bearing clearance detection.

[0004] In the aforementioned patents or prior art, existing measuring devices can only measure the radial clearance value on one side during the radial clearance detection process. They cannot separately obtain the opposing clearance data distributed to both sides from the center of the inner ring, thereby determining whether the clearance on both sides is symmetrical or within a reasonable range.

[0005] Therefore, it is necessary to invent a clearance testing device for bearing manufacturing to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a clearance testing device for bearing manufacturing. By linking a dial indicator arranged in opposite directions with a horizontally swinging pressure cylinder, it can achieve independent measurement and data comparison of the radial clearance on both sides of the inner ring of the bearing. At the same time, with the help of a servo motor driving the carrier to rotate, the clearance distribution at multiple angles can be obtained, so as to solve the problems of existing measuring devices that can only measure the overall radial clearance, cannot measure and compare the clearance on both sides separately, and are difficult to achieve multi-angle and all-round detection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a clearance testing device for bearing manufacturing, comprising a workbench and a control cabinet, wherein the control cabinet is installed above the workbench and an air pump control system is installed inside the control cabinet;

[0008] The positioning component set above the workbench includes a pressure cylinder. Eight sets of connecting frames are slidably connected in a ring below the pressure cylinder. A fixing plate is installed below each set of connecting frames, and a trapezoidal block is installed above each set of connecting frames. Each set of trapezoidal blocks penetrates the inner wall of the pressure cylinder, and the inclined surface of the trapezoidal block faces the inner wall of the pressure cylinder.

[0009] The clearance measuring component located below the positioning component includes two sets of dial indicators. The two sets of dial indicators are arranged opposite each other below the pressure cylinder. A measuring rod is installed on one side of each dial indicator and is parallel to the table surface. An adjusting rod is threadedly connected to one side of each measuring rod. The adjusting rods of the two sets of dial indicators are arranged opposite each other, and the two ends of the two sets of adjusting rods are located on one side of the two opposite connecting frames.

[0010] The fixed component set above the workbench includes a support base. Eight sets of trapezoidal blocks are slidably connected in a ring on the inner wall of the support base. Each set of trapezoidal blocks is equipped with a fixing plate on the side outside the support base. The support base and the lower pressure cylinder are in the same vertical and horizontal position.

[0011] As a preferred embodiment of the present invention, cylinders are symmetrically installed above the workbench, and cylinders are connected to the air pump control system pipeline inside the control cabinet.

[0012] As a preferred embodiment of the present invention, a lower pressure seat is installed between the upper output ends of the two sets of cylinders, and cylinder two is installed inside the lower pressure cylinder. Cylinder two is connected to the air pump control system pipeline inside the control cabinet. A conical cylinder is installed at the output end of cylinder two, and the conical cylinder is at the same vertical and horizontal position as each set of trapezoidal blocks.

[0013] As a preferred embodiment of the present invention, eight sets of guide rods are installed in a ring-shaped arrangement inside the pressure cylinder, and the guide rods are slidably connected to the corresponding trapezoidal blocks. Each set of guide rods is fitted with a spring, and the two sides of the springs are respectively attached to the connection points of the guide rods and the trapezoidal blocks.

[0014] As a preferred embodiment of the present invention, a through groove is provided above the lower pressure seat, a slider is slidably connected in the through groove, and the lower part of the slider is fixedly connected to the upper part of the lower pressure cylinder. A cylinder three is installed between the slider and the through groove, and the cylinder three is connected to the air pump control system pipeline inside the control cabinet.

[0015] As a preferred embodiment of the present invention, a connecting cylinder is installed below the pressure cylinder, and a connecting rod is slidably connected inside the connecting cylinder, and the lower part of the connecting rod is slidably connected to the upper part of the two sets of dial indicators. A spring is attached between the connecting rod and the inner wall of the connecting cylinder.

[0016] As a preferred embodiment of the present invention, a positioning rod is installed below the two sets of dial indicators, and the positioning rod and the bearing seat are in the same vertical and horizontal position.

[0017] As a preferred embodiment of the present invention, a cylinder four is installed inside the bearing seat, and the cylinder four is connected to the air pump control system pipeline inside the control cabinet. A conical disk is installed at the output end above the cylinder four, and the inclined surface around the conical disk is at the same vertical and horizontal position as the inclined surface of the trapezoidal block two.

[0018] As a preferred embodiment of the present invention, eight sets of guide rods are installed in a ring on the inner wall of the bearing seat. Each set of trapezoidal blocks is equipped with a connecting seat above it, and the connecting seat is slidably connected to the corresponding guide rod. Each set of guide rods is fitted with a spring, and the two ends of each set of springs are in contact with the inner wall of the bearing seat and the connecting seat. A conical positioning groove is provided on the top of the bearing seat.

[0019] As a preferred embodiment of the present invention, a fixed frame is installed below the workbench, and a servo motor is installed on one side below the fixed frame. A gear is shaft-connected to the output end of the servo motor, and the gear is located inside the fixed frame. A rotating shaft is rotatably connected inside the fixed frame, and the rotating shaft is connected through the workbench and fixedly connected to the bottom of the support base. A gear two is sleeved and fixed on the rotating shaft, and the gear two meshes with the gear one.

[0020] Compared with the prior art, the technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0021] 1. By using two sets of dial indicators arranged in opposite directions, along with a laterally swinging pressure cylinder and its drive mechanism, bidirectional independent measurement of the bearing radial clearance is achieved. Under the coordinated action of fixed plate one and fixed plate two, the inner and outer rings of the bearing are synchronously tightened and maintain a stable state with their centers aligned, laying a benchmark for accurate measurement. When the pressure cylinder drives the outer ring to swing laterally, the connecting frames on both sides respectively contact the measuring rod ends of the two sets of dial indicators arranged in opposite directions. Since the dial indicators are fixed in position, and the displacement of the connecting frames directly reflects the movement of the outer ring relative to the inner ring, the two sets of dial indicators can record the radial displacement on both sides of the bearing inner ring in real time and independently. By comparing these two sets of measurement data, the operator can not only obtain the overall radial clearance value, but also accurately determine whether the clearance on both sides is symmetrical, whether there is uneven loading or assembly deviation, thus effectively overcoming the limitation of existing measuring devices that cannot perform bilateral, opposing clearance comparison, providing a scientific basis for the evaluation of bearing assembly quality and process adjustment.

[0022] 2. The inclined guide structure of the positioning rod and conical positioning groove enables automatic centering of the dial indicator before measurement, ensuring that the measuring axis always passes through the bearing center and eliminating errors caused by manual alignment. Simultaneously, the floating fit between the connecting cylinder and the connecting rod, along with the elastic buffer of spring two, allows the dial indicator assembly to automatically adjust its position according to the bearing's height, ensuring reliable contact between the measuring head and the bearing. Furthermore, the servo motor drives the bearing seat to rotate via gear transmission, precisely rotating the bearing inner ring to any set angle. Combined with repeated outer ring oscillation measurements, this allows for rapid acquisition of radial clearance distribution data at different phases of the bearing. This multi-angle, all-around measurement method not only improves the equipment's applicability and testing efficiency but also provides richer and more reliable data support for comprehensive bearing quality assessment, dynamic characteristic analysis, and defect diagnosis. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the workbench structure of the present invention;

[0026] Figure 3 is a schematic diagram of the structure below the fixed frame of the present invention;

[0027] Figure 4 is a schematic diagram of the planed structure of the bearing seat of the present invention;

[0028] Figure 5 is a schematic diagram of the fixed plate two-layout structure of the present invention;

[0029] Figure 6 is a schematic diagram of the trapezoidal block II structure of the present invention;

[0030] Figure 7 is a schematic diagram of the planing structure of the lower pressure cylinder of the present invention;

[0031] Figure 8 is a schematic diagram of the tapered cylinder planing structure of the present invention;

[0032] Figure 9 is a schematic diagram of the planing structure of the lower pressure seat of the present invention;

[0033] Figure 10 is a schematic diagram of the meshing structure of gear one and gear two of the present invention;

[0034] Figure 11 is a schematic diagram of the planed structure of the connecting cylinder of the present invention;

[0035] Figure 12 is an enlarged structural diagram of point A in Figure 4 of the present invention;

[0036] Figure 13 is an enlarged structural diagram of point B in Figure 7 of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 001. Workbench; 101. Control Cabinet; 002. Positioning Assembly; 201. Cylinder 1; 202. Lower Pressing Seat; 203. Lower Pressing Cylinder; 204. Cylinder 2; 205. Conical Cylinder; 206. Connecting Frame; 207. Fixing Plate 1; 208. Trapezoidal Block 1; 209. Guide Rod 1; 210. Spring 1; 003. Clearance Measurement Assembly; 301. Through Slot; 302. Slider; 303. Cylinder 3; 304. Connecting Cylinder; 305. Connecting Rod; 306. Spring 2; 307. Dial Indicator; 308. Measuring Rod; 309. Adjusting Rod; 310. Positioning Rod; 004. Fixing Assembly; 401. Bearing Seat; 402. Trapezoidal Block 2; 403. Fixing Plate 2; 404. 405. Cylinder 4; 406. Conical disc; 407. Guide rod 2; 408. Connecting seat; 409. Spring 3; 400. Fixing frame; 410. Servo motor; 411. Gear 1; 412. Rotating shaft; 413. Gear 2; 414. Conical positioning groove. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] The present invention provides a clearance testing device for bearing manufacturing, as shown in Figures 1-13, including a workbench 001 and a control cabinet 101. The control cabinet 101 is installed above the workbench 001, and an air pump control system is installed inside the control cabinet 101.

[0041] The air pump control system inside control cabinet 101 can be used to control the start-up process, thereby driving the entire system to operate.

[0042] The positioning component 002, located above the worktable 001, includes a pressure cylinder 203. Eight sets of connecting frames 206 are slidably connected in a ring below the pressure cylinder 203. A fixing plate 207 is installed below each set of connecting frames 206. A trapezoidal block 208 is installed above each set of connecting frames 206. Each set of trapezoidal blocks 208 penetrates the inner wall of the pressure cylinder 203, and the inclined surface of the trapezoidal block 208 faces the inner wall of the pressure cylinder 203.

[0043] By distributing the eight sets of connecting brackets 206 and trapezoidal blocks 208, the fixing plate 207 can act on the outer ring of the bearing from multiple directions, ensuring the alignment of the bearing before testing.

[0044] The clearance measuring component 003, located below the positioning component 002, includes two sets of dial indicators 307. The two sets of dial indicators 307 are arranged opposite each other below the pressure cylinder 203. A measuring rod 308 is installed on one side of each dial indicator 307, and the measuring rod 308 is parallel to the table surface of the worktable 001. An adjusting rod 309 is threadedly connected to one side of the measuring rod 308, and the adjusting rods 309 of the two sets of dial indicators 307 are arranged opposite each other. The two ends of the two sets of adjusting rods 309 are located on one side of the two opposing connecting frames 206.

[0045] By using two sets of dial indicators 307 arranged in opposite directions, the radial displacement of the bearing inner ring can be detected separately, solving the problem that existing technologies cannot detect the clearance on both opposite sides separately. This also provides a basis for subsequent comparison of the two sets of data. After the connecting frame 206 is fixed in place, the adjusting rod 309 is adjusted to fit against the surface of the connecting frame 206, thereby automatically adapting the length of the adjusting rod 309 according to the diameter of the bearing, ensuring the normal operation of the measurement.

[0046] The fixed assembly 004, located above the workbench 001, includes a support base 401. Eight sets of trapezoidal blocks 402 are slidably connected in a ring on the inner wall of the support base 401. Each set of trapezoidal blocks 402 is equipped with a fixing plate 403 on one side outside the support base 401. The support base 401 and the lower pressure cylinder 203 are in the same vertical and horizontal position.

[0047] By arranging eight sets of trapezoidal blocks 402 in a ring, the fixing plate 403 can effectively act on the inner ring of the bearing, and together with the fixing plate 207, the bearing can be fixed and the overall posture can be stabilized.

[0048] Furthermore, in the above structure, cylinder 201 is symmetrically installed above the workbench 001, and cylinder 201 is connected to the air pump control system pipeline inside the control cabinet 101.

[0049] The cylinder 201 can drive the lower pressure seat 202 to move downward.

[0050] Furthermore, in the above structure, a lower pressure seat 202 is installed between the upper output ends of the two sets of cylinders 201. Cylinder 204 is installed inside the lower pressure cylinder 203, and cylinder 204 is connected to the air pump control system pipeline inside the control cabinet 101. A conical cylinder 205 is installed at the output end of cylinder 204, and the conical cylinder 205 is in the same vertical and horizontal position as each set of trapezoidal blocks 208.

[0051] The cylinder 204 can push the conical cylinder 205 downward. The internal inclination of the conical cylinder 205 and the inclined surface of the trapezoidal block 208 can drive each set of trapezoidal blocks 208 to move simultaneously. This can effectively avoid the bearing being subjected to force at a single point, which would cause the bearing to tilt and affect the measurement results.

[0052] Furthermore, in the above structure, eight sets of guide rods 209 are installed in a ring inside the pressure cylinder 203, and the guide rods 209 are slidably inserted into the corresponding trapezoidal blocks 208. Each set of guide rods 209 is fitted with a spring 210, and the two sides of the spring 210 are respectively attached to the connection of the guide rod 209 and the trapezoidal block 208.

[0053] The guide rod 209 ensures the linearity of the sliding of the trapezoidal block 208, and the spring 210 can automatically reset the trapezoidal block 208 after the measurement is completed.

[0054] Furthermore, in the above structure, a through groove 301 is provided above the lower pressure seat 202, and a slider 302 is slidably connected in the through groove 301. The lower part of the slider 302 is fixedly connected to the upper part of the lower pressure cylinder 203. A cylinder 303 is installed between the slider 302 and the through groove 301, and the cylinder 303 is connected to the air pump control system pipeline inside the control cabinet 101.

[0055] The cylinder 303 can drive the slider 302 to move laterally in the through groove 301, thereby causing the lower cylinder 203 to swing left and right as a whole. At this time, the outer ring of the bearing can swing, thus realizing the measurement of clearance.

[0056] Furthermore, in the above structure, a connecting cylinder 304 is installed below the pressure cylinder 203, and a connecting rod 305 is slidably connected inside the connecting cylinder 304. The lower part of the connecting rod 305 is slidably connected to the upper part of the two sets of dial indicators 307, and a spring 306 is attached between the connecting rod 305 and the inner wall of the connecting cylinder 304.

[0057] Through the cooperation of connecting rod 305 and connecting cylinder 304, dial indicator 307 can be effectively buffered under the action of spring 2 306, so that the pressure cylinder 203 can drive the fixed plate 1 207 to move to the bearing position for positioning, so as to realize adjustment according to the height of the bearing.

[0058] Furthermore, in the above structure, positioning rods 310 are installed below the two sets of dial indicators 307, and the positioning rods 310 and the bearing seat 401 are in the same vertical horizontal position.

[0059] By engaging the positioning rod 310 with the tapered positioning groove 414 above the bearing seat 401, when the pressure cylinder 203 moves closer to the bearing seat 401, the inclined surfaces of the positioning rod 310 and the tapered positioning groove 414 come into contact, ultimately causing the dial indicator 307 to move laterally to the center position, ensuring that its initial position is at the center of the bearing.

[0060] Furthermore, in the above structure, a cylinder 404 is installed inside the bearing seat 401, and the cylinder 404 is connected to the air pump control system pipeline inside the control cabinet 101. A conical disk 405 is installed at the output end above the cylinder 404, and the inclined surface around the conical disk 405 is at the same vertical and horizontal position as the inclined surface of the trapezoidal block 402.

[0061] The conical disc 405 is raised by the cylinder 404, which causes its edge to press against the inclined surface of the trapezoidal block 402, causing the trapezoidal block 402 to slide outward and drive the fixing plate 403 to fit against the inner wall of the bearing inner ring, thus fixing the bearing.

[0062] Furthermore, in the above structure, eight sets of guide rods 406 are installed in a ring on the inner wall of the bearing seat 401. A connecting seat 407 is installed above each set of trapezoidal blocks 402, and the connecting seat 407 is slidably connected to the corresponding guide rod 406. A spring 408 is sleeved on each set of guide rods 406, and the two ends of each set of springs 408 are in contact with the inner wall of the bearing seat 401 and the connecting seat 407. A conical positioning groove 414 is opened on the top of the bearing seat 401.

[0063] The cooperation between guide rod 406 and connecting seat 407 ensures the linearity of the sliding of trapezoidal block 402, and spring 408 ensures that trapezoidal block 402 automatically resets after measurement and limiting contact.

[0064] Furthermore, in the above structure, a fixed frame 409 is installed below the worktable 001, and a servo motor 410 is installed on one side below the fixed frame 409. The output end of the servo motor 410 is shaft-connected to a gear 411, and the gear 411 is located inside the fixed frame 409. A rotating shaft 412 is rotatably connected inside the fixed frame 409, and the rotating shaft 412 is connected through the worktable 001. The rotating shaft 412 is fixedly connected to the bottom of the support 401. A gear 413 is sleeved and fixed on the rotating shaft 412, and the gear 413 meshes with the gear 411.

[0065] The servo motor 410 drives the gear 411 to rotate, which in turn drives the rotating shaft 412 to rotate via the gear 413, thereby causing the bearing seat 401 to rotate as a whole. This allows for the measurement of the clearance on opposite sides of the bearing at different positions.

[0066] As shown in Figures 1-13, when measurement is required, the air pump control system inside the control cabinet 101 provides power to each actuator. The operator places the bearing to be tested above the bearing seat 401, and aligns the inner ring of the bearing approximately with the eight sets of fixing plates 403. Then, the cylinder 404 is activated to push the conical disk 405 upward. During its ascent, the inclined surface of the edge simultaneously presses against the inclined surface of the eight sets of trapezoidal blocks 402, forcing the trapezoidal blocks 402 to slide linearly in all directions along the guide rod 406. This, in turn, causes the fixing plates 403 to expand outward synchronously until they are tightly fitted against the inner wall of the bearing's inner ring, ensuring the bearing remains stable during the testing process.

[0067] Simultaneously, cylinder 201 is activated, driving the lowering seat 202 to move the lowering cylinder 203 above the bearing. During the pressing process, the positioning rod 310, guided by the tapered positioning groove 414, drives the dial indicator 307 to slide along the connecting rod 305 to the center position. As the lowering cylinder 203 continues to move downward, the connecting cylinder 304 and the connecting rod 305 compress the second spring 306, thereby automatically adapting to bearings of different heights and ensuring that the fixing plate 207 can accurately move to the corresponding position on the outer ring of the bearing.

[0068] Subsequently, cylinder 204 inside the pressure cylinder 203 pushes the conical cylinder 205 downward, causing its inclined surface to press against the inclined surfaces of the eight sets of trapezoidal blocks 208. The trapezoidal blocks 208, through the connecting frame 206, drive the fixing plate 207 to expand outward synchronously, achieving uniform clamping of the bearing outer ring and ensuring that the inner and outer rings of the bearing remain centered. At this time, the adjusting rods 309 on one side of the two sets of dial indicators 307 are adjusted so that they respectively fit against the surface of the corresponding connecting frame 206, preparing for subsequent measurements.

[0069] Start cylinder 303, pushing slider 302 to move laterally within through groove 301. Slider 302 drives the lower pressure cylinder 203 and its fixed bearing outer ring to swing left and right. During this process, the positions of the two sets of dial indicators 307 are fixed, so that dial indicators 307 and connecting rod 305 are in a sliding state. This allows them to not only obtain the overall radial clearance value, but also simultaneously measure the clearance distribution from the center of the inner ring to both sides, thereby determining whether the clearance on both sides is symmetrical or within a reasonable range.

[0070] To measure the radial clearance of a bearing at different phases, the servo motor 410 can be started to drive gear 411 to rotate. This, in turn, drives the rotating shaft 412 to rotate via the meshing gear 413, thereby rotating the bearing seat 401 and its fixed inner ring to the desired angle. Then, the cylinder 303 can be restarted, and the above measurement steps repeated to obtain radial clearance data at multiple angles.

[0071] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A clearance testing device for bearing manufacturing, comprising a worktable (001) and a control cabinet (101), characterized in that: The control cabinet (101) is installed above the workbench (001), and an air pump control system is installed inside the control cabinet (101); The positioning component (002) located above the workbench (001) includes a pressure cylinder (203). Eight sets of connecting frames (206) are slidably connected in a ring below the pressure cylinder (203). A fixing plate (207) is installed below each set of connecting frames (206). A trapezoidal block (208) is installed above each set of connecting frames (206). Each set of trapezoidal blocks (208) penetrates the inner wall of the pressure cylinder (203). The inclined surface of the trapezoidal block (208) faces the inner wall of the pressure cylinder (203). The clearance measuring component (003) located below the positioning component (002) includes two sets of dial indicators (307). The two sets of dial indicators (307) are arranged opposite each other below the pressure cylinder (203). A measuring rod (308) is installed on one side of each dial indicator (307), and the measuring rod (308) is parallel to the table surface of the worktable (001). An adjusting rod (309) is threadedly connected to one side of each measuring rod (308), and the adjusting rods (309) of the two sets of dial indicators (307) are arranged opposite each other. The two ends of the two sets of adjusting rods (309) are respectively located on one side of the two opposing connecting frames (206). The fixed assembly (004) set above the workbench (001) includes a support base (401). Eight sets of trapezoidal blocks (402) are slidably connected in a ring on the inner wall of the support base (401). Each set of trapezoidal blocks (402) is equipped with a fixing plate (403) on the side outside the support base (401). The support base (401) and the lower pressure cylinder (203) are in the same vertical and horizontal position. A cylinder (201) is symmetrically installed above the workbench (001); A pressure seat (202) is installed between the upper output ends of the two sets of cylinders (201); A through groove (301) is provided above the lower pressure seat (202), and a slider (302) is slidably connected in the through groove (301). The lower part of the slider (302) is fixedly connected to the upper part of the lower pressure cylinder (203). A cylinder three (303) is installed between the slider (302) and the through groove (301), and the cylinder three (303) is connected to the air pump control system pipeline inside the control cabinet (101). A connecting cylinder (304) is installed below the pressure cylinder (203). A connecting rod (305) is slidably connected inside the connecting cylinder (304). The lower part of the connecting rod (305) is slidably connected to the upper part of the two sets of dial indicators (307). A spring (306) is attached between the connecting rod (305) and the inner wall of the connecting cylinder (304). Positioning rods (310) are installed below the two sets of dial indicators (307), and the positioning rods (310) and the bearing seat (401) are in the same vertical and horizontal position; Eight sets of guide rods (406) are installed in a ring on the inner wall of the bearing seat (401). Each set of trapezoidal blocks (402) is equipped with a connecting seat (407), and the connecting seat (407) is slidably connected to the corresponding guide rod (406). Each set of guide rods (406) is fitted with a spring (408), and the two ends of each set of springs (408) are in contact with the inner wall of the bearing seat (401) and the connecting seat (407). A conical positioning groove (414) is opened on the top of the bearing seat (401).

2. The clearance testing equipment for bearing manufacturing according to claim 1, characterized in that: The cylinder (201) is connected to the air pump control system pipeline inside the control cabinet (101).

3. The clearance testing equipment for bearing manufacturing according to claim 2, characterized in that: The lower cylinder (203) is equipped with a second cylinder (204), and the second cylinder (204) is connected to the air pump control system pipeline inside the control cabinet (101). The output end of the second cylinder (204) is equipped with a conical cylinder (205), and the conical cylinder (205) and each group of trapezoidal blocks (208) are in the same vertical and horizontal position.

4. The clearance testing equipment for bearing manufacturing according to claim 3, characterized in that: The pressure cylinder (203) has eight sets of guide rods (209) arranged in a ring inside, and the guide rods (209) are slidably inserted into the corresponding trapezoidal blocks (208). Each set of guide rods (209) is fitted with a spring (210), and the two sides of the spring (210) are respectively attached to the connection of the guide rod (209) and the trapezoidal block (208).

5. The bearing clearance testing device according to claim 1, characterized in that: The bearing seat (401) is equipped with a cylinder four (404), and the cylinder four (404) is connected to the air pump control system pipeline inside the control cabinet (101). A conical disk (405) is installed on the output end above the cylinder four (404), and the inclined surface around the conical disk (405) is at the same vertical horizontal position as the inclined surface of the trapezoidal block two (402).

6. The clearance testing equipment for bearing manufacturing according to claim 1, characterized in that: A fixed frame (409) is installed below the workbench (001). A servo motor (410) is installed on one side below the fixed frame (409). A gear (411) is shaft-connected to the output end of the servo motor (410). The gear (411) is located inside the fixed frame (409). A rotating shaft (412) is rotatably connected inside the fixed frame (409). The rotating shaft (412) is connected through the workbench (001). The rotating shaft (412) is fixedly connected to the bottom of the support seat (401). A gear (413) is sleeved and fixed on the rotating shaft (412). The gear (413) meshes with the gear (411).

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