CN219914273U - Bearing raceway inner/outer diameter rapid detection device - Google Patents
Bearing raceway inner/outer diameter rapid detection device Download PDFInfo
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- CN219914273U CN219914273U CN202321242152.3U CN202321242152U CN219914273U CN 219914273 U CN219914273 U CN 219914273U CN 202321242152 U CN202321242152 U CN 202321242152U CN 219914273 U CN219914273 U CN 219914273U
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- outer diameter
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 abstract description 29
- 238000009434 installation Methods 0.000 abstract 1
- 238000000691 measurement method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Abstract
In order to solve the technical problems of complicated operation, larger measurement error and the like of the existing measurement method, the utility model provides a rapid detection device for the inner/outer diameter of a bearing raceway, which comprises a measurement guide rod, a first bracket, a second bracket, a first measurement assembly and a second measurement assembly; the first measuring assembly comprises a first measuring rod, a second measuring rod, a baffle plate, a first shaft sleeve and a second shaft sleeve which are sequentially connected, wherein the first shaft sleeve and the second shaft sleeve are respectively embedded in the first through hole; the second measuring assembly comprises a measuring meter, a third measuring rod and a second elastic piece; the end part of the first measuring rod is provided with a first measuring ball, the end part of the third measuring rod is provided with a second measuring ball, and the sizes and the installation heights of the first measuring ball and the second measuring ball are consistent; measuring an outer diameter of the bearing race when the heads of the first and second measuring balls are opposed; and when the heads of the first measuring ball and the second measuring ball are back to back, the inner diameter of the bearing raceway is measured.
Description
Technical Field
The utility model relates to a measuring device, in particular to a device for rapidly detecting the inner diameter/outer diameter of a bearing raceway.
Background
The bearing is used as a connecting piece for rotation and support, so that friction can be reduced, rotation is smoother, and energy consumption is reduced. The bearing roller path is used as a supporting frame of the ball, is matched with the ball to bear various types of loads, and the bearing capacity and the rotating speed of the bearing are determined by the matching size and the contact angle of the bearing roller path and the ball. Therefore, in order to ensure the rotation precision of the bearing and improve the working performance of the bearing, the stable running of the bearing is ensured, and the measuring process of the bearing roller path is indispensable.
In the process of processing and producing the bearing raceway, a common detection method comprises the following steps: simultaneously, two measuring bars are matched with a micrometer to measure the diameter of an outer raceway of the large bearing, the diameters of inner raceways of the large bearing are required to be respectively measured for the sizes of the two end balls and the wall thickness in the same diameter direction, and a manual hand measuring tool is generally used for directly measuring a workpiece, so that the operation is complicated and inconvenient; meanwhile, the positions of the workpiece to be measured and the measuring tool cannot be kept relatively stable, so that the measuring consistency of the inner and outer raceways of the bearing is poor, and further the measuring error is large. In addition, the problems of insufficient length of a standard measuring ruler, inconvenient operation and the like exist when the large-scale multi-raceway shaft or gear ring similar to wind power and the like is measured.
Disclosure of Invention
In order to solve the technical problems of complicated operation, larger measurement error and the like of the conventional bearing raceway inner/outer diameter measuring device, the utility model provides the bearing raceway inner/outer diameter rapid detection device which is simple in structure, convenient to operate and use, wide in application range and capable of guaranteeing higher repeated measurement accuracy.
The technical scheme of the utility model is as follows:
the device is characterized by comprising a measuring guide rod, a first bracket, a second bracket, a first measuring component and a second measuring component;
the upper ends of the first bracket and the second bracket are respectively connected with the measuring guide rod, and the lower ends of the first bracket and the second bracket are respectively provided with a first through hole and a second through hole which are parallel to the measuring guide rod;
the first measuring assembly comprises a first measuring rod, a second measuring rod, a baffle plate, a first shaft sleeve and a second shaft sleeve which are sequentially connected, wherein the first shaft sleeve and the second shaft sleeve are respectively embedded into two ends of the first through hole; one end of the second measuring rod, which is close to the first measuring rod, is provided with a shoulder for limiting, the shoulder of the second measuring rod extends into the second shaft sleeve, and the outer side of the shoulder of the second measuring rod is in contact with the inner end of the first shaft sleeve; the second measuring rod is sleeved with a first elastic piece, one end of the first elastic piece is contacted with the inner side of the shoulder of the second measuring rod, and the other end of the first elastic piece is contacted with the inner end of the second sleeve; one end of the first measuring rod, which is far away from the second measuring rod, is provided with a first measuring head, and the head part of the first measuring head is provided with a first measuring ball;
the second measuring assembly comprises a measuring meter, a third measuring rod and a second elastic piece; the measuring meter is a dial gauge or a dial indicator; the meter frame of the meter is arranged at the lower end of the second bracket, the measuring contact of the meter is contacted with the tail part of the third measuring rod, and the measuring contact and the tail part of the third measuring rod are both positioned in the second through hole; the second elastic piece is positioned on one side of the second bracket away from the measuring meter, the upper end of the second elastic piece is connected with the side wall of the second bracket, and the lower end of the second elastic piece is connected with the third measuring rod and is used for driving the third measuring rod to reset; a second measuring head is arranged at one end of the third measuring rod, which is far away from the measuring contact, and a second measuring ball is arranged at the head of the second measuring head;
the mounting heights of the first measuring ball and the second measuring ball are consistent; the heads of the first measuring ball and the second measuring ball are oppositely arranged and are used for measuring the outer diameter of the bearing raceway; the heads of the first measuring ball and the second measuring ball are arranged in a back-to-back mode and are used for measuring the inner diameter of the bearing raceway.
Further, the device also comprises a movable handle; the movable handle is positioned on one side of the first bracket, which is close to the baffle, and is hinged with the first bracket; the movable handle is an L-shaped handle, the long side of the movable handle is a driving end, and the short side of the movable handle is a driven end; the tip of driven end is located the baffle and is close to one side of second measuring stick, and the convenience when the work piece dress that awaits measuring was got has been improved in the setting of movable handle.
Further, the first support and the second support are movable supports and can move left and right along the measuring guide rod, so that the measuring device is suitable for measuring workpieces to be measured in different sizes.
Further, scale marks are arranged on the measuring guide rod, corresponding adjustment is carried out according to actual testing requirements, the first support and the second support are respectively moved to the corresponding scale marks, and the first support and the second support are respectively fastened on the measuring guide rod from top to bottom by adopting screws.
Further, the first measuring head and the second measuring head can be detached, and the measuring balls with different sizes can be replaced conveniently due to the fact that the measuring balls are connected to the measuring heads, and therefore the application range of the detection device is improved.
Further, the first measuring head is in threaded connection with the first measuring rod; the second measuring head is in threaded connection with the third measuring rod.
Further, the first measuring ball is connected with the first measuring head by adopting glue; the second measuring ball is connected with the second measuring head by glue. The strength of the glue connection can meet the daily use requirement, and the glue connection is firm in use, simple in manufacture and convenient to replace if abrasion occurs in the use process.
Further, the first measuring ball and the second measuring ball are steel balls, the specification size of the steel balls is consistent with the size of the rollaway nest of the workpiece to be measured, and the measuring precision is improved in sequence.
Further, the first elastic piece is a spring, and the arrangement of the spring can ensure that the second measuring head can be quickly reset when the workpiece to be measured is mounted on the detection device, so that the measurement precision is improved; the second elastic piece is a spring piece, and the arrangement of the spring piece can ensure the quick reset of the second measuring head after the measurement is finished.
Further, the first measuring rod is in threaded connection with the second measuring rod; the second measuring rod is in threaded connection with the baffle plate, so that fine adjustment can be performed according to the size of the workpiece to be measured.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model comprises a measuring guide rod, a first bracket, a second bracket, a first measuring component and a second measuring component, wherein during measurement, a workpiece to be measured is arranged between the first measuring component and the second measuring component, so that the outer diameter of a bearing raceway can be measured; the inner diameter of the bearing roller path can be measured by exchanging the mounting directions of the first measuring assembly and the second measuring assembly and adjusting specific mounting positions, the measuring process of the detecting device is simple and convenient, the inner diameter and outer diameter data of the bearing roller path can be directly and accurately obtained, and the measuring efficiency is improved while the measuring difficulty is reduced.
2. The first elastic piece and the second elastic piece can respectively ensure the quick reset of the first measuring assembly and the second measuring assembly after the measurement is finished, so that the repeated measurement precision of the device is improved.
3. The utility model also comprises a movable handle, wherein the movable handle is an L-shaped handle, the long side of the movable handle is a driving end, and the short side of the movable handle is a driven end; during measurement, the driving end moves upwards to drive the driven end to move axially, and then the first measurement assembly is driven to shrink axially, so that abrasion between the first measurement ball and a workpiece to be measured due to friction is avoided.
4. According to the utility model, the first measuring head and the second measuring head are detachable, and the first measuring ball and the second measuring ball are respectively arranged on the first measuring head and the second measuring head, so that the disassembly of the first measuring head and the second measuring head is beneficial to replacing measuring balls with different sizes, and the application range of the detection device is further improved.
Drawings
FIG. 1 is a schematic view of a device for rapidly detecting the inner/outer diameter of a bearing race according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a structure for measuring the inner diameter of a bearing race in an embodiment of a device for rapidly detecting the inner/outer diameter of a bearing race according to the present utility model.
The reference numerals are as follows:
the measuring device comprises a 1-measuring guide rod, a 2-first support, a 21-first through hole, a 3-second support, a 31-second through hole, a 4-first measuring rod, a 41-first measuring head, a 42-first measuring ball, a 5-first elastic piece, a 6-second measuring rod, a 7-baffle, an 8-measuring meter, a 9-third measuring rod, a 91-second measuring head, a 92-second measuring ball, a 10-second elastic piece, a 11-movable handle, a 12-first shaft sleeve and a 13-second shaft sleeve.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a rapid detection device for the inner/outer diameter of a bearing raceway, which comprises a measurement guide rod 1, a first bracket 2, a second bracket 3, a first measurement assembly and a second measurement assembly. The upper ends of the first bracket 2 and the second bracket 3 are respectively connected with the measuring guide rod 1, and the lower ends are respectively provided with a first through hole 21 and a second through hole 31 which are parallel to the measuring guide rod 1.
Be equipped with the scale mark on the measurement guide arm 1, carry out corresponding adjustment according to actual test demand, can be according to actual test demand, move about measuring guide arm 1 with first support 2 and second support 3 and adjust to corresponding scale mark department, the rethread screw is fastened. The scale marks on the measuring guide rod 1 can be adjusted in an auxiliary way, so that the operation is convenient and the application is flexible; meanwhile, the measuring guide rod 1, the first bracket 2 and the second bracket 3 are made of common steel materials, and the measuring guide rod is subjected to heat treatment such as carburizing and quenching, so that high rigidity and hardness are ensured, and measuring errors caused by deformation in the using process are avoided. The measuring guide rod 1 is also provided with a lightening hole so as to lighten the overall mass of the device.
The first measuring assembly comprises a first measuring rod 4, a second measuring rod 6 and a baffle 7 which are sequentially connected, and a first shaft sleeve 12 and a second shaft sleeve 13 which are respectively embedded in two ends of a first through hole 21. The first measuring rod 4 and the second measuring rod 6 and the baffle 7 are connected through threads. The outer diameters of the first sleeve 12 and the second sleeve 13 are adapted to the aperture of the first through hole 21. One end of the second measuring rod 6, which is close to the first measuring rod 4, is provided with a shoulder for limiting, the shoulder of the second measuring rod 6 stretches into the second shaft sleeve 13, and the outer side of the shoulder contacts with the inner end of the first shaft sleeve 12; the second measuring rod 6 is sleeved with a first elastic piece 5, and the first elastic piece 5 is generally a spring. One end of the spring is in contact with the inner side of the shoulder of the second measuring rod 6, and the other end is in contact with the inner end of the second sleeve 13. One end of the first measuring rod 4 far away from the second measuring rod 6 is provided with a first measuring head 41, and the first measuring head 41 is in threaded connection with the first measuring rod 4, so that fine adjustment of the relative positions of the first measuring head 41 and the first measuring rod 4 can be realized. The head of the first measuring head 41 is provided with a first measuring ball 42, the first measuring ball 42 is typically a steel ball, which is connected with the first measuring head 41 by glue. The first measuring head 41 can be disassembled, and then steel balls with different sizes can be exchanged according to actual detection requirements.
The second measuring assembly comprises a measuring meter 8, a third measuring rod 9 and a second elastic piece 10; the measuring meter 8 is generally a dial indicator or a dial indicator, and other types of measuring meters can be selected according to the test requirements. The meter frame of the measuring meter 8 is arranged at the lower end of the second bracket 3, the measuring contact of the measuring meter 8 is contacted with the tail part of the third measuring rod 9, and the measuring contact and the tail part are both positioned in the second through hole 31. The second elastic piece 10 is a spring piece, which is located at one side of the second bracket 3 away from the measuring meter 8, the upper end of the spring piece is connected with the side wall of the second bracket 3, the lower end of the spring piece is connected with the third measuring rod 9, and the third measuring rod 9 is driven to reset rapidly through the spring piece, so that the second measuring ball 92 resets rapidly.
The one end that third measuring rod 9 kept away from the measurement contact is equipped with second gauge head 91, threaded connection between second gauge head 91 and the third measuring rod 9 can realize the fine setting of two relative positions. The head of the second stylus 91 is provided with a second measurement ball 92. The second measuring ball 92 is typically a steel ball, which is connected to the second measuring head 91 by glue. The second measuring head 91 is detachable, and then steel balls with different sizes can be exchanged according to actual detection requirements.
The mounting heights of the first measuring ball 42 and the second measuring ball 92 are consistent, and the mounting heights are matched with the raceway sizes of the bearing raceways to be detected; for measuring the outer diameter of the bearing race when the heads of the first and second measuring balls 42, 92 are opposed; for measuring the inner diameter of the bearing race when the heads of the first and second measuring balls 42, 92 are backed up.
Preferably, the detecting device of the present utility model further comprises a movable handle 11, wherein the movable handle 11 is located on one side of the first bracket 2 near the baffle 7 and is hinged with the first bracket 2. The movable handle 11 is an L-shaped handle, the long side of the movable handle is a driving end, the short side of the movable handle is a driven end, and the hinge point is the joint of the driving end and the driven end; the end of the driven end is located on the side of the baffle 7 close to the second measuring rod 6, so that the movable handle 11 forms a simple lever mechanism with the first bracket 2 and the first measuring assembly.
The measuring process of the utility model is specifically as follows:
as shown in fig. 1, when the inner diameter of the bearing raceway needs to be measured, the detection device is assembled, and the relative positions of the first bracket 2 and the second bracket 3 are adjusted according to the scale above the measuring guide rod 1 according to the diameter of the bearing raceway to be measured, at this time, the measuring meter 8 is located between the first bracket 2 and the second bracket 3, the first measuring ball 42 and the second measuring ball 92 face outwards, and the first measuring ball 42 and the second measuring ball 92 face away from each other.
During measurement, the second measuring ball 92 is abutted against the bearing raceway, in this state, the second measuring ball 92, the second measuring head 91 and the third measuring rod 9 are relatively fixed, and the spring piece is kept in an initial state; then, when the driving end of the movable handle 11 is lifted, the driven end pushes the baffle plate 7 to move rightwards, the baffle plate 7 drives the second measuring rod 6 and the first measuring rod 4 to move rightwards, the spring is compressed, and the first measuring ball 42 is abutted against the bearing roller path. The movable handle 11 is loosened, as the first measuring ball 42 and the second measuring ball 92 are propped against the roller path of the bearing to be measured, the compression force of the spring pushes the second measuring rod 6 and the first measuring rod 4 to move leftwards, the first measuring ball 42 synchronously moves leftwards, the bearing to be measured is driven to move leftwards, the bearing to be measured simultaneously extrudes the second measuring ball 92, the second measuring head 91 and the third measuring rod 9 to move leftwards, synchronously, the spring piece deforms along with the third measuring rod 9, at the moment, the third measuring rod 9 pushes the measuring contact to shrink, and the dial indicator displays the reading. And when the spring is restored to an initial state and the detection device is relatively stable with the bearing to be detected, recording the current reading value of the dial indicator.
Generally, before the measurement of the standard component is needed, the size of the standard component is taken as a reference, and the inner diameter of the bearing raceway to be measured can be obtained by combining the dial gauge reading value of the standard component during measurement and the dial gauge reading value of the bearing to be measured during measurement.
After the measurement is finished, the positions of the other parts of the detection device are kept unchanged, the bearing to be measured is taken down only by pulling the movable handle 11, and when the detection device is restored to the initial state, the inner diameter of the raceway of the bearing to be measured can be measured next according to the operation.
The design of the spring and the spring piece can ensure that certain interaction force is always kept between the first measuring ball 42 and the second measuring ball 92 and the bearing rollaway nest to be measured in the measuring process, so that the phenomenon of relative sliding between the measuring balls and the bearing rollaway nest is avoided, further measuring errors are reduced, and measuring precision is improved.
As shown in fig. 2, if the outer diameter of the bearing raceway needs to be measured, the positions of the first bracket 2 and the second bracket 3 can be exchanged, and meanwhile, the positions of the first measuring component and the second measuring component are synchronously exchanged, that is, the first measuring ball 42 and the second measuring ball 92 are both inward, and the two are opposite, so that the accurate measurement of the outer diameter of the bearing raceway can be realized according to the method of measuring the inner diameter.
The detection device is simple and convenient to operate, the specific measurement size can be adjusted at will according to the test requirement, and the detection efficiency of operators is improved; in addition, the measuring precision of the device can be guaranteed to be within 0.002mm, the measuring precision is greatly improved, meanwhile, the detection device can be quickly reset due to the design of the first elastic piece and the second elastic piece, and further the high repeated measuring precision of the device and the consistency of measuring results are guaranteed.
The detection device mainly aims at measuring the size difference of the diameters of the large bearing rollways with the same size, the first measurement ball 42 and the second measurement ball 92 can be detached and replaced according to the rollway sizes of the bearings to be detected, and various specifications of detection measuring tools can be manufactured, so that the detection device is suitable for the detection of various types of bearing rollways.
Claims (10)
1. The utility model provides a quick detection device of bearing raceway inside/external diameter which characterized in that:
the device comprises a measuring guide rod (1), a first bracket (2), a second bracket (3), a first measuring component and a second measuring component; the upper ends of the first bracket (2) and the second bracket (3) are respectively connected with the measuring guide rod (1), and the lower ends of the first bracket and the second bracket are respectively provided with a first through hole (21) and a second through hole (31) which are parallel to the measuring guide rod (1);
the first measuring assembly comprises a first measuring rod (4), a second measuring rod (6), a baffle (7), a first shaft sleeve (12) and a second shaft sleeve (13) which are sequentially connected, wherein the first shaft sleeve (12) and the second shaft sleeve (13) are respectively embedded into two ends of the first through hole (21);
one end of the second measuring rod (6) close to the first measuring rod (4) is provided with a shoulder for limiting, the shoulder of the second measuring rod (6) stretches into the second shaft sleeve (13), and the outer side of the shoulder is in contact with the inner end of the first shaft sleeve (12); the second measuring rod (6) is sleeved with a first elastic piece (5), one end of the first elastic piece (5) is contacted with the inner side of the shoulder of the second measuring rod (6), and the other end of the first elastic piece is contacted with the inner end of the second sleeve (13); one end of the first measuring rod (4) far away from the second measuring rod (6) is provided with a first measuring head (41), and the head part of the first measuring head (41) is provided with a first measuring ball (42);
the second measuring assembly comprises a measuring meter (8), a third measuring rod (9) and a second elastic piece (10); the measuring meter (8) is a dial gauge or a dial indicator; the meter frame of the meter (8) is arranged at the lower end of the second bracket (3), and the measuring contact of the meter (8) is contacted with the tail part of the third measuring rod (9) and both are positioned in the second through hole (31); the second elastic piece (10) is positioned on one side of the second bracket (3) far away from the measuring meter (8), the upper end of the second elastic piece is connected with the side wall of the second bracket (3), and the lower end of the second elastic piece is connected with the third measuring rod (9) and is used for driving the third measuring rod (9) to reset; a second measuring head (91) is arranged at one end of the third measuring rod (9) far away from the measuring contact, and a second measuring ball (92) is arranged at the head part of the second measuring head (91);
the mounting heights of the first measuring ball (42) and the second measuring ball (92) are consistent; the heads of the first measuring ball (42) and the second measuring ball (92) are oppositely arranged and are used for measuring the outer diameter of the bearing raceway; alternatively, the heads of the first measuring ball (42) and the second measuring ball (92) are arranged opposite to each other for measuring the inner diameter of the bearing race.
2. The bearing race inner/outer diameter rapid detection apparatus according to claim 1, characterized in that:
also comprises a movable handle (11); the movable handle (11) is positioned on one side of the first bracket (2) close to the baffle (7) and hinged with the first bracket (2);
the movable handle (11) is an L-shaped handle, the long side of the movable handle is a driving end, and the short side of the movable handle is a driven end; the end of the driven end is positioned on one side of the baffle (7) close to the second measuring rod (6).
3. The bearing race inner/outer diameter rapid detection apparatus according to claim 1 or 2, characterized in that:
the first bracket (2) and the second bracket (3) are movable brackets and can move left and right along the measuring guide rod (1).
4. A bearing race inner/outer diameter rapid detection apparatus according to claim 3, characterized in that:
and scale marks are also arranged on the measuring guide rod (1).
5. The bearing race inner/outer diameter rapid detection apparatus according to claim 4, characterized in that:
the first measuring head (41) and the second measuring head (91) are detachable.
6. The bearing race inner/outer diameter rapid detection apparatus according to claim 5, characterized in that:
the first measuring head (41) is in threaded connection with the first measuring rod (4); the second measuring head (91) is in threaded connection with the third measuring rod (9).
7. The bearing race inner/outer diameter rapid detection apparatus according to claim 6, characterized in that:
the first measuring ball (42) is connected with the first measuring head (41) by adopting glue;
the second measuring ball (92) is connected with the second measuring head (91) by adopting glue.
8. The bearing race inner/outer diameter rapid detection apparatus according to claim 7, characterized in that:
the first measuring ball (42) and the second measuring ball (92) are steel balls.
9. The bearing race inner/outer diameter rapid detection apparatus according to claim 8, characterized in that:
the first elastic piece (5) is a spring, and the second elastic piece (10) is a spring piece.
10. The bearing race inner/outer diameter rapid detection apparatus according to claim 9, characterized in that:
the first measuring rod (4) is in threaded connection with the second measuring rod (6); the second measuring rod (6) is in threaded connection with the baffle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321242152.3U CN219914273U (en) | 2023-05-22 | 2023-05-22 | Bearing raceway inner/outer diameter rapid detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321242152.3U CN219914273U (en) | 2023-05-22 | 2023-05-22 | Bearing raceway inner/outer diameter rapid detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219914273U true CN219914273U (en) | 2023-10-27 |
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ID=88436365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321242152.3U Active CN219914273U (en) | 2023-05-22 | 2023-05-22 | Bearing raceway inner/outer diameter rapid detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219914273U (en) |
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2023
- 2023-05-22 CN CN202321242152.3U patent/CN219914273U/en active Active
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