A device for detecting outer diameter of outer ring of bearing

Abstract

The present invention is a device for detecting the outer diameter of an outer ring of a bearing, comprising four coplanar positioning wheels, wherein the four positioning wheels are opposite to each other in pairs and are connected to the same circumference, wherein one pair is a driving wheel and the other pair is a driven wheel, wherein the driving wheels of the pair are respectively mounted on a rotating motor and rotate at the same speed and in the same direction, an outer diameter micrometer is provided in the middle of the pair of driven wheels, and the measuring head of the outer diameter micrometer is also connected to the circumference, and the outer ring of the bearing to be detected is placed in the space defined by the circumference. During operation, the outer ring of the bearing is positioned in the middle of the four positioning wheels, and the measuring head abuts against the outer circumferential surface of the outer ring of the bearing, and the rotation of the driving wheels drives the outer ring of the bearing to rotate, so that the outer diameter micrometer obtains the outer diameter detection data of the outer ring of the bearing.

Description

Technical Field

[0001] The invention relates to the field of bearing detection, and in particular to a device for detecting the outer diameter of an outer ring of a bearing. Background Art

[0002] Deep groove ball bearings are composed of an outer ring, an inner wheel, balls and a cage. In order to ensure that the inner wheel and the balls with cages can be well installed in the outer ring of the bearing, the existing deep groove ball bearings need to be tested on the outer ring of the bearing before assembly.

[0003] The consistency of the outer diameter of the bearing outer ring is a very important parameter for the bearing. If the outer diameter consistency is poor, the bearing noise will increase and the life will be reduced. The outer diameter detection method of the bearing outer ring in the prior art is still in the static measurement stage combining semi-automation and manual detection. The outer diameter detection usually uses a mechanical diameter measuring instrument and is manually inspected. The specific process is to manually rotate the bearing for one circle during the inspection and then observe the changes in the readings of the measuring instrument. In addition to the errors of the measuring instrument itself, this measurement method also has measurement errors caused by the inspector's inspection techniques, vision, technical level, fatigue level, etc.

[0004] In the Chinese patent application: CN201810775611.1, a device for detecting the size of a bearing outer ring is disclosed. The device transports the bearing outer ring to an air-floating platform, fixes the bearing outer ring with a fixed wheel and two ejectors, and the air-floating platform drives the outer ring to rotate one circle to complete the automatic measurement of the outer diameter.

[0005] However, in the prior art, the bearing outer ring to be tested is placed on an air-floating platform. When the air-floating platform rotates, it relies on the surface friction between the bearing outer ring and the bearing outer ring to drive the bearing outer ring to rotate. The bearing outer ring is prone to slip during the rotation process, resulting in incomplete measured data. On the other hand, the ejector pin uses point contact with the bearing outer ring. If the surface roughness of the bearing outer ring is high, it is easy to amplify the friction of the ejector pin contact, making it even more difficult for the bearing outer ring to complete a rotation.

[0006] Therefore, it is necessary to propose a new detection device for the outer diameter of the bearing outer ring to improve the problems existing in the prior art and to improve the quality of bearing detection. Summary of the invention

[0007] In view of this, the purpose of the present invention is to propose a bearing outer ring outer diameter detection device, which can effectively keep the bearing outer ring fixed after entering the detection station, and at the same time prevent the bearing outer ring from sliding during one rotation, thereby improving the detection quality of the bearing outer ring outer diameter.

[0008] According to the purpose of the present invention, a bearing outer ring outer diameter detection device is proposed, including four coplanar positioning wheels, the four positioning wheels are opposite to each other and connected to the same circumference, one pair of which are driving wheels and the other pair are driven wheels, the pair of driving wheels are respectively installed on a rotating motor and rotate at the same speed and in the same direction, an outer diameter micrometer is provided in the middle of the pair of driven wheels, and the measuring head of the outer diameter micrometer is also connected to the circumference, and the bearing outer ring to be detected is placed in the space defined by the circumference. During operation, the bearing outer ring is positioned in the middle of the four positioning wheels, and the measuring head is in contact with the outer circumferential surface of the bearing outer ring. The rotation of the pair of driving wheels drives the bearing outer ring to rotate, so that the outer diameter micrometer obtains the outer diameter detection data of the bearing outer ring.

[0009] Preferably, the pair of driven wheels and the external diameter micrometer are connected to a driving motor, and move toward or away from the driving wheel in a horizontal direction.

[0010] Preferably, it also includes a pushing plate, one side of which is connected to the output end of the driving motor, and the other side of the pushing plate is also provided with a pair of connecting rods, and the pair of driven wheels are respectively arranged at the ends of the corresponding connecting rods. The driving motor drives the pushing plate to move, driving the driven wheels to complete the movement towards or away from the driving wheel.

[0011] Preferably, one end of the connecting rod can movably pass through the pushing plate, and a spring is sleeved on the connecting rod body, one end of the spring abuts against the end of the connecting rod where the driven wheel is located, and the other end abuts against the pushing plate, and the spring generally provides an outward elastic force.

[0012] Preferably, a sliding assembly is provided on the top of the pushing plate, and the sliding assembly includes a sliding rail and a sliding block, the sliding block is fixed to the pushing plate, and the setting of the sliding rail enables the pushing plate to move in a direction close to or away from the driving wheel.

[0013] Preferably, it further comprises a fixing plate, one end of the slide rail is fixed on the fixing plate, the rotating motor is mounted on the fixing plate, and the rotating motor is arranged facing the pushing plate.

[0014] Preferably, it also includes a shell component, which has a accommodating cavity for accommodating the pushing plate and the fixing plate, the top of the shell component is provided with an opening, the slide rail is fixed on the top of the shell component and passes through the opening, and the slider is built into the opening and slides on the slide rail.

[0015] Preferably, the fixing plate is fixed to the housing assembly and substantially constitutes a side surface of the housing assembly.

[0016] Preferably, it further comprises a lifting platform, on which the outer bearing ring to be inspected is placed. During inspection, the lifting platform carries the outer bearing ring up to an inspection position, so that the outer bearing ring is in the space defined by the circle.

[0017] Preferably, it also includes a lifting motor connected to the lifting platform to drive the lifting platform to move in the vertical direction.

[0018] Compared with the prior art, the present invention is beneficial in that:

[0019] 1. The bearing outer ring outer diameter detection device of the present invention uses four positioning wheels to position the bearing outer ring to be detected. On the one hand, the contact area with the outer ring is increased, and the problem of increased friction caused by the uneven surface of the outer ring can be ignored. On the other hand, the positioning wheel itself can rotate and will not produce hard friction with the bearing outer ring;

[0020] 2. The bearing outer ring outer diameter detection device of the present invention drives the bearing outer ring to rotate by two driving wheels among the four positioning wheels instead of using the bearing platform to rotate, which not only simplifies the design of the entire detection device, but also the close contact between the driving wheel and the bearing outer ring can ensure that the bearing is effectively driven;

[0021] 3. The bearing outer ring outer diameter detection device of the present invention applies a spring to the driven wheel connecting rod, so that the driven wheel has a buffer force when contacting the bearing outer ring. The elastic force provided by the spring itself is sufficient to fix the bearing outer ring, and the rigid contact will not squeeze the bearing outer ring and cause damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a perspective view of the inside of the outer diameter detection device of the present invention.

[0023] Figure 2 It is a bottom view of the interior of the outer diameter detection device of the present invention.

[0024] Figure 3 It is a schematic diagram of the appearance of the bearing outer ring outer diameter detection device of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings, but these embodiments do not limit the present invention. Structural, methodological, or functional changes made by ordinary technicians in the field based on these embodiments are all included in the protection scope of the present invention.

[0026] See also Figure 1 and Figure 2 , Figure 1 is an internal perspective view of the outer diameter detection device of the present invention, Figure 2It is a bottom view of the inner part of the outer diameter detection device of the present invention. As shown in the figure, the main working elements of the outer diameter detection device of the bearing outer ring of the present invention include: 4 coplanar positioning wheels, the four positioning wheels are opposite to each other and connected to the same circumference, one pair of which is a driving wheel 20, and the other pair is a driven wheel 21, the pair of driving wheels 20 are respectively installed on the rotating motor 19 and rotate at the same speed and in the same direction, an outer diameter micrometer 23 is arranged in the middle of the pair of driven wheels 21, and the measuring head of the outer diameter micrometer 23 is also connected to the circumference, and the space enclosed by the circumference is used to place the bearing outer ring 40 to be detected. When working, the bearing outer ring 40 is positioned in the middle of the four positioning wheels, and the measuring head of the outer diameter micrometer 23 is against the outer circumference of the bearing outer ring 40. The rotation of the pair of driving wheels 21 drives the bearing outer ring 40 to rotate, so that the outer diameter micrometer 23 obtains the outer diameter detection data of the bearing outer ring.

[0027] In the illustrated embodiment, a pair of driven wheels 21 and an outer diameter micrometer are connected to a drive motor 17 to move horizontally toward or away from the drive wheel 20. The bearing outer ring 40 can also be positioned by moving the drive wheel closer to the driven wheel.

[0028] Specifically, a push plate 13 is included between the driven wheel 21 and the driving motor 17. One side of the push plate 13 is connected to the output end of the driving motor 17. A pair of connecting rods 24 are also provided on the other side of the push plate. The two driven wheels 21 are respectively arranged at the ends of the corresponding connecting rods 24. The driving motor 17 drives the push plate 13 to move, driving the driven wheel 21 to complete the movement towards or away from the driving wheel 20.

[0029] Preferably, one end of the connecting rod 24 can movably pass through the push plate 13, and a spring 22 is sleeved on the rod body of the connecting rod 24, one end of the spring 22 abuts against the end of the connecting rod where the driven wheel is located, and the other end abuts against the push plate 13, and the spring 22 generally provides an outward elastic force. During operation, when the driven wheel 21 approaches and abuts against the bearing outer ring 40 to be tested, the spring 22 is compressed by force, and the driving motor 17 has not stopped at this time, and the driven wheel continues to press the bearing outer ring 40, and in this process, the measuring head of the micrometer 23 also abuts against the bearing outer ring 40, entering the working state.

[0030] Preferably, a sliding assembly is provided on the top of the push plate 13, and the sliding assembly includes a slide rail 11 and a slider 12. The slide rail 11 is provided with a track, and the slider 12 is arranged on the track and can slide along the track. The slider 12 is fixed to the push plate 13, and the setting of the slide rail 11 enables the push plate 13 to move in a direction close to or away from the driving wheel.

[0031] Please see again Figure 1The outer diameter detection device also includes a fixed plate 14, one end of the slide rail 11 is fixed on the fixed plate 14, the rotating motor 19 is installed on the fixed plate 14, and the rotating motor faces 19 to push the plate 13.

[0032] See also Figure 3 , Figure 3 The figure is a schematic diagram of the outer diameter detection device of the bearing outer ring of the present invention. As shown in the figure, the outer diameter detection device, viewed from the outside, includes a housing component 10, the interior of the housing component 10 is hollow, the main components of the detection device are placed in the hollow internal accommodating cavity of the housing component 10, the top of the housing component 10 is provided with an opening 15, the slide rail 11 is fixed on the top of the housing component 10 and passes through the opening 15, and the slider 12 is built into the opening 15, the size of the opening 15 allows the slider 12 to slide in the opening.

[0033] The housing assembly 10 has an L-shaped shape when viewed from one side, including a vertical portion and a horizontal portion, wherein the horizontal portion is directly above a workstation, which is a working position point where the outer diameter detection device is located in a process on the entire production line. Usually, the bearing outer ring to be detected is transported to the workstation by a mechanical gripper or a transmission belt after being processed in the previous process. A lifting platform 16 is provided on the workstation as shown in the figure. The internal accommodating cavity of the housing assembly 10 is mainly arranged on the horizontal portion.

[0034] Please see again Figure 3 The push plate 13 and the fixed plate 14 are arranged in the accommodating cavity of the housing component 10. Looking from the opening 15, it can be seen that the push plate 13 moves with the slider 12 in the area of ​​the opening 15. From the outside, the fixed plate 14 is fixed to the housing component 10 and substantially constitutes a side surface of the housing component 10, so that the housing component 10 can form a wrapping structure and can fully utilize the side material to form the fixed plate.

[0035] Please combine Figure 1 and Figure 3 The lifting platform 16 is connected to a lifting motor 18, and the lifting motor 18 drives the lifting platform 16 to move in the vertical direction. During the inspection, the bearing outer ring 40 to be inspected is placed on the lifting platform 16, and the lifting platform 16 carries the bearing outer ring 40 to the inspection position, so that the bearing outer ring 40 is in the space defined by the circumference. Then the driven wheel 21 is driven to approach the bearing outer ring 40 and is pressed against it, and the driving wheel 20 starts to rotate and drives the bearing outer ring 40 to rotate one circle, and the outer diameter micrometer 23 is read to obtain the outer diameter data of the bearing outer ring 40 to be inspected.

[0036] In summary, the present invention proposes an outer diameter detection device for a bearing outer ring, which can effectively keep the bearing outer ring fixed after entering the detection station, and at the same time prevent the bearing outer ring from sliding during one rotation, thereby improving the detection quality of the outer diameter of the bearing outer ring.

[0037] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A device for detecting the outer diameter of a bearing outer ring, characterized in that: It comprises 4 coplanar positioning wheels, the four positioning wheels are opposite to each other and connected to the same circumference, one pair of which is a driving wheel and the other pair is a driven wheel. The driving wheels of the pair are respectively mounted on a rotating motor and rotate at the same speed and in the same direction. An outer diameter micrometer is arranged in the middle of the pair of driven wheels, and the measuring head of the outer diameter micrometer is also connected to the circumference. The outer ring of the bearing to be tested is placed in the space defined by the circumference. When working, the outer ring of the bearing is positioned in the middle of the four positioning wheels, and the measuring head contacts the outer circumference of the outer ring of the bearing. The rotation of the driving wheels drives the outer ring of the bearing to rotate, so that the outer diameter micrometer obtains the outer diameter detection data of the outer ring of the bearing. The pair of driven wheels and the external diameter micrometer are connected to a driving motor and move toward or away from the driving wheel in the horizontal direction; It also includes a push plate, one side of which is connected to the output end of the driving motor, and the other side of which is provided with a pair of connecting rods, the pair of driven wheels are respectively provided at the ends of the corresponding connecting rods, and the driving motor drives the push plate to move, driving the driven wheels to move towards or away from the driving wheel; One end of the connecting rod can movably pass through the pushing plate, and a spring is sleeved on the connecting rod body, one end of the spring abuts against the end of the connecting rod where the driven wheel is located, and the other end abuts against the pushing plate, and the spring generally provides an outward elastic force; A sliding assembly is provided on the top of the push plate. The sliding assembly includes a slide rail and a slider. The slider is fixed to the push plate. The setting of the slide rail enables the push plate to move in a direction close to or away from the driving wheel.

2. The bearing outer ring outer diameter detection device according to claim 1, characterized in that: It also includes a fixing plate, one end of the slide rail is fixed on the fixing plate, the rotating motor is installed on the fixing plate, and the rotating motor is arranged facing the pushing plate.

3. The bearing outer ring outer diameter detection device according to claim 2, characterized in that: It also includes a shell component, which has a accommodating cavity for accommodating the pushing plate and the fixing plate, the top of the shell component is provided with an opening, the slide rail is fixed on the top of the shell component and passes through the opening, and the slider is built into the opening and slides on the slide rail.

4. The bearing outer ring outer diameter detection device according to claim 3, characterized in that: The fixing plate is fixed to the housing assembly and substantially constitutes a side surface of the housing assembly.

5. The bearing outer ring outer diameter detection device according to claim 1, characterized in that: It also includes a lifting platform, on which the outer bearing ring to be tested is placed. During testing, the lifting platform carries the outer bearing ring up to a testing position so that the outer bearing ring is in the space defined by the circumference.

6. The bearing outer ring outer diameter detection device according to claim 5, characterized in that: It also includes a lifting motor connected to the lifting platform to drive the lifting platform to move in a vertical direction.

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