Roller bearing radial runout measuring instrument

Abstract

The utility model discloses a roller bearing detects radial runout value instrument, especially relates to roller bearing detection technical field, including base and three fixed boxes, and the bottom of three fixed boxes all are fixedly connected with base, and the both sides of three fixed boxes all are fixedly connected with scale, all be provided with limit component on three fixed boxes, and one limit component includes two first screw rod, two moving frame, two sliding plates, a plurality of indicator board and two stripe handle, and the both ends of two first screw rod all are movably connected through bearing between fixed box. The utility model discloses through rotating stripe handle can drive sliding plate horizontal movement, and make sliding plate and roller bearing contact, through the cooperation of indicator board and scale, observe the moving distance of sliding plate, and adjust the position of other sliding plate by analogy, carry out the calculation to the radial runout value of roller bearing through detector main part, and the operation is simple, and the positioning of sliding plate is convenient.

Description

Technical Field

[0001] This utility model relates to the field of roller bearing testing technology, and more specifically, to an instrument for testing the radial runout value of roller bearings. Background Technology

[0002] Roller bearings are an important type of rolling bearing, mainly composed of an inner ring, an outer ring, rolling elements, and a cage. Their core feature is that relative motion is achieved by using rollers as rolling elements, thereby reducing friction and wear between mechanical parts. Roller bearing inspection refers to the process of inspecting the dimensional accuracy of roller bearings using specialized instruments and methods. Its purpose is to evaluate whether the bearing meets design standards and usage requirements, and to ensure that the bearing can operate stably after assembly.

[0003] A search revealed that Chinese patent CN212158389U discloses an instrument for detecting the radial runout of extra-large self-aligning roller bearings. This instrument utilizes a sliding plate, an outer ring end face support bearing, an inner ring end face support bearing, and an outer diameter support bearing. First, the outer ring of the bearing is placed against the outer ring end face support bearing, and the outer ring end face is pressed against the outer diameter support bearing. The sliding plate is then fixed in place. Next, a magnetic dial indicator is attached to the instrument dial, and a 0.1 mm clock-shaped dial indicator is clamped onto it. The pointer presses against the inner ring of the bearing until a reading is obtained. The inner ring is then rotated to acquire the reading. The sliding plate is then moved again, pressing the inner ring end face against the inner ring end face support bearing and fixing the sliding plate in place. Finally, the pointer presses against the outer ring of the bearing, and the outer ring is rotated to acquire another reading. The difference between the two readings is the radial runout value. This invention solves the current problem in China of lacking instruments for detecting the radial runout of extra-large self-aligning roller bearings.

[0004] When using the aforementioned radial runout value instrument, the fastening nut is turned upwards until it is tightly fitted against the inner top wall of the limiting groove, thus preventing the slide from moving. This operation is cumbersome and inconvenient for positioning the slide. The movement distance of the slide depends entirely on the operator's experience and judgment. It is difficult to ensure the consistency of the position each time when adjusting multiple times, resulting in a large error in the radial runout value. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides an instrument for detecting the radial runout value of roller bearings, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an instrument for detecting radial runout of roller bearings, comprising a base and three fixed boxes, the bottom ends of which are fixedly connected to the base. A scale is fixedly connected to both sides of each of the three fixed boxes. Each of the three fixed boxes is equipped with a limit assembly, one of which includes two first lead screws, two movable frames, two sliding plates, multiple indicator plates, and two striped handles. The limit assemblies on the three fixed boxes have the same structure and installation method. A support frame is fixedly connected to the top of the base, and a detection assembly is mounted on the support frame. The detection assembly includes a detector body, a circular plate, a hydraulic cylinder, a U-shaped plate, two side plates, a second lead screw, a stepper motor, and a limit rod. An auxiliary assembly is mounted on the base, comprising two outer diameter support columns, two sliding frames, a sliding rod, two bolts, and multiple uprights. Both ends of the sliding rod are fixedly connected to the base.

[0007] Furthermore, both ends of the two first lead screws are movably connected to the fixed box via bearings, the two movable frames are respectively threaded to the outer side of the two first lead screws, and the top ends of the two movable frames are respectively fixedly connected to the two sliding plates, one side of the plurality of indicator plates is respectively fixedly connected to the two movable frames, and the other side of the plurality of indicator plates extends out of the fixed box.

[0008] Furthermore, one end of each of the two striped handles is fixedly connected to the two first lead screws, and the outer sides of both striped handles are in contact with the fixed box.

[0009] As can be seen, in the above technical solution, the stripes on the striped handle can increase the friction between the striped handle and the fixed box, thereby preventing the first lead screw from rotating.

[0010] Furthermore, the detector body is located at the bottom of the circular plate, the top of the circular plate is fixedly connected to the hydraulic cylinder, the top of the hydraulic cylinder is fixedly connected to the U-shaped plate, and the two side plates are fixedly connected to the U-shaped plate on opposite sides, and the two side plates are respectively movably sleeved on the second lead screw and the limiting rod.

[0011] As can be seen, in the above technical solution, the piston rod on the hydraulic cylinder extends, causing the circular plate and the detector body to move downwards.

[0012] Furthermore, both ends of the second lead screw are movably connected to the support frame via bearings, the output shaft end of the stepper motor is fixedly connected to the second lead screw, and the stepper motor is fixedly installed on one side of the support frame. Both ends of the limiting rod are fixedly connected to the support frame.

[0013] As can be seen, in the above technical solution, the stepper motor drives the second lead screw to rotate. Since one side plate is threadedly connected to the second lead screw, and the other side plate cooperates with the limit rod to restrict the rotation of the U-shaped plate, the second lead screw can drive the two side plates and the U-shaped plate to move horizontally, thereby driving the hydraulic cylinder and the detector body to move horizontally.

[0014] Furthermore, the bottom ends of the two outer diameter support columns are in contact with the two sliding frames respectively. The two sliding frames are movably sleeved on the sliding rod, and the two sliding frames are fixed to the two outer diameter support columns respectively by two bolts.

[0015] Furthermore, the bottom ends of the plurality of uprights are respectively fixedly connected to two sliding frames, and the top ends of the plurality of uprights respectively penetrate two outer diameter support columns.

[0016] It can be seen that the above technical solution can improve the stability between the sliding frame and the outer diameter support column.

[0017] Furthermore, the circular plate is provided with an adjustment assembly, which includes two upright plates, two rotating shafts and a self-locking motor, with the top ends of the two upright plates fixedly connected to the circular plate.

[0018] Furthermore, the two opposing ends of the two rotating shafts are fixedly connected to the upright plates, and the opposite ends of the two rotating shafts are movably connected to the two upright plates through bearings. The output shaft end of the self-locking motor is fixedly connected to one of the rotating shafts, and the self-locking motor is fixedly installed on the front side of one of the upright plates.

[0019] The technical effects and advantages of this utility model are as follows: 1. This utility model can drive the first lead screw to rotate by rotating the striped handle, thereby driving the skateboard to move horizontally and making the skateboard contact the roller bearing. At the same time, the moving frame drives the indicator plate to move horizontally. By cooperating with the indicator plate and the scale, the movement distance of the skateboard can be observed. Similarly, the position of other skateboards can be adjusted. The radial runout value of the roller bearing is calculated by the detector body. The operation is simple and convenient for positioning the skateboard. 2. This utility model provides auxiliary support for the roller bearing through two outer diameter support columns. At the same time, the two outer diameter support columns will drive two sliding frames to slide on the slide rod. By rotating the bolt and moving it away from the sliding frame, the fixation between the sliding frame and the outer diameter support column is released. Different diameter outer diameter support columns can be replaced according to the size of the roller bearing. The structure is simple and the application range is wide. 3. This utility model uses a self-locking motor to drive two rotating shafts, which in turn drive the detector body to rotate. The tilt angle of the detector body can be adjusted according to the needs, and the self-locking function of the self-locking motor ensures that the detector body maintains a stable angle during the detection process. It can accurately simulate the complex posture deviation of the bearing in actual operation, allowing the detector body to collect radial runout data from an angle that is closer to the actual working conditions, reducing the deviation and omission caused by a single detection angle, and further improving the accuracy of the detection. Attached Figure Description

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the detection component structure of this utility model; Figure 4 This is a schematic diagram of the auxiliary component structure of this utility model; Figure 5 This is a cross-sectional view of the fixed box and a schematic diagram of the assembly structure of the limiting component of this utility model.

[0022] Figure 6 This is a schematic diagram of the adjustment component structure of this utility model.

[0023] In the diagram: 1. Base; 2. Fixing box; 3. Scale; 4. Limiting component; 5. Auxiliary component; 6. Support frame; 7. Detection component; 8. Adjustment component; 401. First lead screw; 402. Moving frame; 403. Slide plate; 404. Indicator plate; 405. Striped handle; 501. Outer diameter support column; 502. Sliding frame; 503. Slide rod; 504. Bolt; 505. Upright pole; 701. Detector body; 702. Circular plate; 703. Hydraulic cylinder; 704. U-shaped plate; 705. Side plate; 706. Second lead screw; 707. Stepper motor; 708. Limiting rod; 801. Upright plate; 802. Rotating shaft; 803. Self-locking motor. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Refer to the instruction manual appendix Figure 1-6 The roller bearing radial runout detection instrument of this embodiment includes a base 1 and three fixed boxes 2, with the bottom of each of the three fixed boxes 2 fixedly connected to the base 1. A scale 3 is fixedly connected to both sides of each of the three fixed boxes 2. Each of the three fixed boxes 2 is equipped with a limit assembly 4. One limit assembly 4 includes two first lead screws 401, two movable frames 402, two sliding plates 403, multiple indicator plates 404, and two striped handles 405. The limit assembly 4 on the three fixed boxes 2 has the same structure and installation method. The two ends of the two first lead screws 401 are movably connected to the fixed box 2 via bearings. Two movable frames 402 are respectively threaded to the outer sides of two first lead screws 401, and the tops of the two movable frames 402 are respectively fixedly connected to two slide plates 403. One side of multiple indicator plates 404 is respectively fixedly connected to the two movable frames 402, and the other side of multiple indicator plates 404 extends to the outside of the fixed box 2. The top of the base 1 is fixedly connected to a support frame 6, and a detection component 7 is provided on the support frame 6. The detection component 7 includes a detector body 701, a circular plate 702, a hydraulic cylinder 703, a U-shaped plate 704, two side plates 705, a second lead screw 706, a stepper motor 707, and a limit rod 708.

[0026] Furthermore, one end of each of the two striped handles 405 is fixedly connected to one of the two first lead screws 401, and the outer sides of both striped handles 405 are in contact with the fixed box 2.

[0027] Furthermore, the detector body 701 is located at the bottom of the circular plate 702, the top of the circular plate 702 is fixedly connected to the hydraulic cylinder 703, the top of the hydraulic cylinder 703 is fixedly connected to the U-shaped plate 704, the two side plates 705 are fixedly connected to the U-shaped plate 704 on opposite sides, and the two side plates 705 are respectively movably sleeved on the second lead screw 706 and the limiting rod 708. The two ends of the second lead screw 706 are movably connected to the support frame 6 through bearings. The output shaft end of the stepper motor 707 is fixedly connected to the second lead screw 706, and the stepper motor 707 is fixedly installed on one side of the support frame 6. The two ends of the limiting rod 708 are fixedly connected to the support frame 6.

[0028] Furthermore, an auxiliary component 5 is provided on the base 1. The auxiliary component 5 includes two outer diameter support columns 501, two sliding frames 502, a sliding rod 503, two bolts 504, and multiple uprights 505. Both ends of the sliding rod 503 are fixedly connected to the base 1. The bottom ends of the two outer diameter support columns 501 are respectively in contact with the two sliding frames 502. The two sliding frames 502 are movably sleeved on the sliding rod 503. The two sliding frames 502 and the two outer diameter support columns 501 are respectively fixed by two bolts 504. The bottom ends of the multiple uprights 505 are respectively fixedly connected to the two sliding frames 502, and the top ends of the multiple uprights 505 respectively penetrate the two outer diameter support columns 501.

[0029] The roller bearing is supported by two outer diameter support columns 501. At the same time, the two outer diameter support columns 501 drive the two sliding frames 502 to slide on the sliding rod 503. By rotating the bolt 504 and moving it away from the sliding frame 502, the fixation between the sliding frame 502 and the outer diameter support column 501 is released. The outer diameter support column 501 of different diameters can be replaced according to the size of the roller bearing. Similarly, the sliding frame 502 is fixed to the outer diameter support column 501 by the bolt 504. Both uprights 505 are inserted into the outer diameter support column 501, which can improve the stability between the sliding frame 502 and the outer diameter support column 501. The structure is simple and has a wide range of applications.

[0030] Furthermore, an adjustment assembly 8 is provided on the circular plate 702. The adjustment assembly 8 includes two upright plates 801, two rotating shafts 802, and a self-locking motor 803. The top ends of the two upright plates 801 are fixedly connected to the circular plate 702. The opposite ends of the two rotating shafts 802 are fixedly connected to the upright plates 801, and the opposite ends of the two rotating shafts 802 are movably connected to the two upright plates 801 through bearings. The output shaft end of the self-locking motor 803 is fixedly connected to one of the rotating shafts 802, and the self-locking motor 803 is fixedly installed on the front side of one of the upright plates 801.

[0031] The self-locking motor 803 is activated, driving two rotating shafts 802 to rotate, which in turn drives the detector body 701 to rotate. The tilt angle of the detector body 701 is adjusted as needed. When the angle reaches a preset value, such as simulating a 2° pitch deviation or 1.5° tilt deviation of a bearing due to installation errors in actual working conditions, the self-locking function of the self-locking motor 803 is triggered. That is, the output shaft is locked by the electromagnetic brake built into the motor, ensuring that the detector body 701 maintains a stable angle during the detection process and avoiding angle deviation caused by vibration or external force. Through this multi-dimensional tilt adjustment, the complex posture deviation of the bearing in actual operation can be accurately simulated, such as the shaft wobble when the machine tool spindle rotates at high speed, or the posture change of the automobile chassis bearing due to road bumps. This allows the detector body 701 to collect radial runout data from an angle that is closer to the actual working conditions, reducing the deviation and omission caused by a single detection angle, and further improving the accuracy of the detection.

[0032] The usage method of this embodiment is as follows: In use, the operator places the roller bearing between three fixed boxes 2, with the outer ring of the roller bearing resting against two outer diameter support columns 501. Then, rotating the striped handle 405 can drive the first lead screw 401 to rotate. The stripes on the striped handle 405 can increase the friction between the striped handle 405 and the fixed box 2, thereby preventing the first lead screw 401 from rotating on its own. Since the first lead screw 401 is threadedly connected to the moving frame 402, and the fixed box 2 restricts the threaded connection of the moving frame 402, the first lead screw 401 can drive the moving frame 402 to move horizontally, thereby driving the slide plate 403 to move horizontally and making the slide plate 403 contact the roller bearing. At the same time, the moving frame 402 drives the indicator plate 404 to move horizontally. By cooperating with the indicator plate 404 and the scale 3, the movement distance of the slide plate 403 can be observed. Similarly, the position of other slide plates 403 can be adjusted. The operation is simple and convenient for positioning the slide plate 403. The stepper motor 707 is started, which drives the second lead screw 706 to rotate. Since one side plate 705 is threadedly connected to the second lead screw 706, and the other side plate 705 cooperates with the limit rod 708 to restrict the rotation of the U-shaped plate 704, the second lead screw 706 can drive the two side plates 705 and the U-shaped plate 704 to move horizontally, thereby driving the hydraulic cylinder 703 and the detector body 701 to move horizontally. The hydraulic cylinder 703 is started, and the piston rod on the hydraulic cylinder 703 extends, driving the circular plate 702 and the detector body 701 to move downward. The position of the detector body 701 is adjusted according to the requirements. The radial runout value of the roller bearing is calculated through the detector body 701. It is worth noting that the working principle of the detector body 701 refers to the prior art (utility model with announcement number CN212158389U).

[0033] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An instrument for detecting radial runout of roller bearings, comprising a base (1) and three fixed boxes (2), wherein the bottom ends of the three fixed boxes (2) are all fixedly connected to the base (1), characterized in that: A scale (3) is fixedly connected to both sides of each of the three fixed boxes (2). Each of the three fixed boxes (2) is provided with a limit component (4). One of the limit components (4) includes two first lead screws (401), two moving frames (402), two sliding plates (403), multiple indicator plates (404), and two striped handles (405). The limit components (4) on the three fixed boxes (2) have the same structure and installation method. The top of the base (1) is fixedly connected to a support frame (6), and a detection component (7) is provided on the support frame (6). The detection component (7) includes a detector body (701), a circular plate (702), a hydraulic cylinder (703), a U-shaped plate (704), two side plates (705), a second lead screw (706), a stepper motor (707), and a limit rod (708). The base (1) is provided with an auxiliary component (5), which includes two outer diameter support columns (501), two sliding frames (502), a sliding rod (503), two bolts (504) and multiple uprights (505). Both ends of the sliding rod (503) are fixedly connected to the base (1).

2. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: Both ends of the two first lead screws (401) are movably connected to the fixed box (2) through bearings. The two movable frames (402) are respectively threaded to the outer side of the two first lead screws (401), and the top of the two movable frames (402) are respectively fixedly connected to the two sliding plates (403). One side of the multiple indicator plates (404) is respectively fixedly connected to the two movable frames (402), and the other side of the multiple indicator plates (404) extends to the outside of the fixed box (2).

3. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: One end of each of the two striped handles (405) is fixedly connected to the two first lead screws (401), and the outer sides of the two striped handles (405) are in contact with the fixed box (2).

4. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: The detector body (701) is located at the bottom of the circular plate (702). The top of the circular plate (702) is fixedly connected to the hydraulic cylinder (703). The top of the hydraulic cylinder (703) is fixedly connected to the U-shaped plate (704). The two side plates (705) are fixedly connected to the U-shaped plate (704) on opposite sides. The two side plates (705) are respectively movably sleeved on the second lead screw (706) and the limiting rod (708).

5. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: Both ends of the second lead screw (706) are movably connected to the support frame (6) through bearings. The output shaft end of the stepper motor (707) is fixedly connected to the second lead screw (706), and the stepper motor (707) is fixedly installed on one side of the support frame (6). Both ends of the limiting rod (708) are fixedly connected to the support frame (6).

6. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: The bottom ends of the two outer diameter support columns (501) are in contact with the two sliding frames (502) respectively. The two sliding frames (502) are movably sleeved on the sliding rod (503), and the two sliding frames (502) are fixed to the two outer diameter support columns (501) respectively by two bolts (504).

7. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: The bottom ends of the plurality of uprights (505) are respectively fixedly connected to two sliding frames (502), and the top ends of the plurality of uprights (505) respectively penetrate two outer diameter support columns (501).

8. The instrument for detecting radial runout of roller bearings according to claim 1, characterized in that: An adjustment assembly (8) is provided on the circular plate (702). The adjustment assembly (8) includes two upright plates (801), two rotating shafts (802), and a self-locking motor (803). The top ends of the two upright plates (801) are fixedly connected to the circular plate (702).

9. The instrument for detecting radial runout of roller bearings according to claim 8, characterized in that: The two rotating shafts (802) are fixedly connected to the upright plate (801) at their opposite ends, and are movably connected to the two upright plates (801) through bearings at their opposite ends. The output shaft end of the self-locking motor (803) is fixedly connected to one of the rotating shafts (802), and the self-locking motor (803) is fixedly installed on the front side of one of the upright plates (801).

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