Spherical cover body positioning device for sphericity detection

Abstract

The utility model provides a spherical cover body positioning device for sphericity detection, which comprises a rack, a mounting plate arranged on the rack, a detection table rotatably arranged at the top of the mounting plate along the vertical direction, a workpiece to be detected placed on the detection table, and a rotating piece capable of driving the detection table to rotate on the mounting plate, a detection assembly is arranged on the machine frame, a sliding groove is formed in the detection table in the horizontal direction, sliding blocks are arranged at the two ends of the sliding groove in the length direction of the sliding groove in a sliding mode, an abutting block is arranged at the top of each sliding block in the length direction of the sliding groove in a sliding mode, and arc-shaped grooves are formed in the side walls, close to each other, of the two abutting blocks. The shape of the arc-shaped groove is matched with the outer wall of the workpiece to be detected, a driving assembly is arranged on the detection table, the driving assembly is used for driving the two sliding blocks to move in the direction close to each other or away from each other, the workpiece to be detected can be positioned, and the sphericity detection accuracy of the workpiece to be detected is improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically, to a spherical cover positioning device for sphericity testing. Background Technology

[0002] The content in this section only provides background information related to this utility model and may not constitute prior art.

[0003] In the field of surveillance equipment, dome-shaped enclosures have broad application prospects, suitable for various monitoring scenarios such as traffic flow monitoring, public place security, and school and hospital security. In outdoor environments, dome-shaped enclosures can prevent excessive light from affecting the monitoring image and effectively reduce the impact of natural weather conditions such as wind, sand, rain, and snow on monitoring quality. Therefore, dome-shaped enclosures not only protect monitoring equipment but also enhance video image quality and improve monitoring effectiveness.

[0004] For spherical covers, those with higher sphericity accuracy can make the video footage captured by monitoring clearer. The production of high-precision spherical covers is now fully achievable in industrial production. However, a certain defect rate will occur in industrial production. Therefore, it is necessary to perform sphericity testing on the completed spherical covers in order to eliminate defective products.

[0005] When inspecting a spherical cover, it is usually necessary to place the cover on a testing platform and then scan its inner wall using an overhead probe. To improve the reliability and accuracy of the scan, the testing platform needs to be rotated to perform a comprehensive scan of the cover's interior. However, since the cover is placed on the testing platform, it inevitably shifts back and forth as the platform rotates, which affects the scanning process and consequently the accuracy of the sphericity measurement. Utility Model Content

[0006] To address the aforementioned technical problems, the present invention aims to provide a spherical cover positioning device for sphericity detection, which can position the workpiece to be detected and improve the accuracy of sphericity detection of the workpiece.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A spherical cover positioning device for sphericity detection includes a frame, a mounting plate on the frame, a detection stage rotatably mounted on the top of the mounting plate in the vertical direction, a workpiece to be detected placed on the detection stage, a rotating component on the mounting plate capable of driving the detection stage to rotate, a detection assembly on the frame, a horizontal groove on the detection stage, sliders slidably mounted at both ends of the groove along its length, an abutment block slidably mounted on the top of each slider along the length of the groove, and an arc-shaped groove on the sidewall of the two abutment blocks that are close to each other, the shape of the arc-shaped groove being adapted to the outer wall of the workpiece to be detected. A driving assembly is provided on the detection stage, the driving assembly being used to drive the two sliders to move in a direction that is closer to or further away from each other.

[0009] In some possible embodiments, the drive assembly includes a drive shaft and a lead screw. The drive shaft is rotatably disposed on one side of the inspection table, and the lead screw is rotatably disposed within the slide groove along its length. The lead screw is connected to the drive shaft in a transmission manner. The slider is threaded onto the lead screw. A knob is fixedly disposed at the end of the drive shaft away from the lead screw, and the diameter of the knob is larger than the diameter of the drive shaft.

[0010] In some possible embodiments, a strip groove is provided at the top of each slider along the length of the groove, and a strip block is slidably disposed in the strip groove along the length of the groove. A connecting block is fixedly disposed at the top of the strip block, and the abutment block is disposed at the top of the connecting block. The abutment block and the connecting block are detachably connected. A limiting member is provided on the connecting block to limit the position of the abutment block on the connecting block. A first elastic member is provided in each strip groove to drive the two strip blocks to move toward each other.

[0011] In some possible embodiments, the limiting member is set as a limiting bolt, a slot is provided on the top of the connecting block along the length of the slide groove, one side of the slot is open, an insert is fixedly provided on the bottom of the abutment block, the insert is slidably inserted into the slot, an installation hole communicating with the slot is provided on the side wall of the connecting block along the horizontal direction, the limiting bolt is slidably inserted into the installation hole, and a threaded hole for threaded connection of the limiting bolt is provided on the side wall of the insert.

[0012] In some possible embodiments, a mounting block is fixedly provided on the top of each abutment block along the vertical direction, and a limiting block is provided on the sidewalls of the two mounting blocks that are close to each other. The bottom of the limiting block is used to abut against the upper edge of the workpiece to be tested to limit the position of the workpiece to be tested on the abutment block.

[0013] In some possible embodiments, receiving holes are provided on the sidewalls of the two mounting blocks that are close to each other along the length of the slide groove. One end of the limiting block is slidably disposed in the receiving hole, and the other end extends out of the receiving hole. A second elastic element is provided in the receiving hole, which is used to drive the limiting block to move away from the receiving hole. An anti-detachment part is provided on the mounting block to prevent the limiting block from detaching from the receiving hole. An inclined surface is provided on the side of the limiting block located outside the receiving hole, which is used to abut against the outer wall of the workpiece to be tested.

[0014] In some possible embodiments, the anti-detachment part is configured as a stop, the anti-detachment part is fixedly disposed at the opening of the receiving hole, and a stop is fixedly disposed at one end of the limiting block located in the receiving hole, the stop being used to abut against the side of the anti-detachment part located in the receiving hole.

[0015] In some possible embodiments, the top of the slider extends above the top opening of the groove, and a connecting groove is provided at the bottom of the connecting block along the length of the groove. Both ends of the connecting groove are through the connecting groove. The top of the strip block is fixedly connected to the inner top wall of the connecting groove, and the portion of the slider that extends above the opening of the groove is slidably connected to the connecting groove.

[0016] In some possible embodiments, an anti-slip pad is fixedly disposed on the inner wall of the arc-shaped groove. The anti-slip pad is used to abut against the outer wall of the workpiece to be inspected, and anti-slip patterns are provided on the anti-slip pad.

[0017] Preferably, the lead screw is configured as a bidirectional threaded lead screw, with threads of opposite directions respectively opened on the left and right halves of the lead screw, the pitch of the two threads being equal and the directions of rotation being opposite.

[0018] In summary, the technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0019] 1. In actual use, depending on the size and model of the workpiece to be inspected, the two sliders are adjusted by the drive component to move towards or away from each other. The sliders drive the abutment blocks to move, thereby adjusting the distance between the two abutment blocks to match the size of the workpiece to be inspected. Then, the workpiece to be inspected is placed in the arc-shaped groove on the abutment block. The arc-shaped groove positions the workpiece to be inspected, effectively preventing the workpiece from shifting its position during subsequent inspection, thus improving the accuracy of the inspection.

[0020] 2. When it is necessary to adjust the distance between the two abutment blocks, rotate the drive shaft to drive the lead screw to rotate. The lead screw can then drive the two sliders to move in the slide groove, thereby achieving the purpose of adjusting the distance between the abutment blocks. In this process, the transmission is carried out through the interlocking threads between the lead screw and the slider, which makes the transmission more precise and reliable, and has good reliability and practicality.

[0021] 3. When it is necessary to position the workpiece to be inspected on the abutment block, place the workpiece to be inspected into the arc-shaped groove, and then use the limiting block to abut against the upper edge of the workpiece to be inspected. Then, move the two abutment blocks closer to each other. At this time, the workpiece to be inspected tends to move upward along the arc-shaped groove under the clamping action of the abutment block. Meanwhile, the bottom of the limiting block abuts against the upper edge of the workpiece to be inspected, which can more firmly limit the workpiece to be inspected on the abutment block, making the position of the workpiece to be inspected more stable and reliable during the inspection process, and further ensuring the accuracy of the inspection.

[0022] 4. When installing the workpiece to be tested, the end of the limiting block is set as an inclined surface, which abuts against the outer wall of the workpiece to be tested, making it easier to install the workpiece and effectively improving the overall reliability and stability of the device in actual use.

[0023] 5. By replacing the contact block according to the different models and sizes of the workpieces to be tested, the applicability of the device can be effectively improved, and the applicability of the device can be further enhanced. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the testing station according to an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the drive component according to an embodiment of the present utility model;

[0027] Figure 4 This is a cross-sectional view of the slider in an embodiment of the present utility model;

[0028] Figure 5 This is an exploded structural diagram of the connecting block according to an embodiment of the present utility model;

[0029] Figure 6 This is a cross-sectional view of the mounting block according to an embodiment of the present utility model;

[0030] Figure 7 for Figure 6 Enlarged view of part A in the image.

[0031] Icons: 1. Frame; 11. Mounting plate; 12. Inspection table; 13. Rotating component; 2. Inspection assembly; 21. Inspection probe; 22. Mounting rod; 3. Slide groove; 31. Slider; 32. Abutment block; 33. Arc-shaped groove; 4. Drive assembly; 41. Drive shaft; 42. Lead screw; 43. Knob; 44. Striped protrusion; 5. Striped groove; 51. Striped block; 52. Connecting block; 53. Limiting component; 54. First elastic component; 55. Connecting groove; 56. Slot; 57. Insertion block; 58. Mounting hole; 59. Threaded hole; 6. Mounting block; 61. Limiting block; 62. Receiving hole; 63. Second elastic component; 64. Anti-detachment part; 65. Inclined surface; 66. Stop block; 7. Anti-slip pad; 8. Workpiece to be inspected. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] The following is for reference Figures 1 to 7 The present invention will be described in further detail below.

[0034] Reference Figure 1 , 2 A spherical cover positioning device for sphericity detection includes a frame 1, a mounting plate 11 on the frame 1, a detection table 12 rotatably mounted on the top of the mounting plate 11 in a vertical direction, a workpiece 8 to be detected placed on the detection table 12, and a rotating component 13 capable of driving the detection table 12 to rotate on the mounting plate 11. In one embodiment of the present invention, the rotating component 13 is configured as a rotating platform, a rotating plate is rotatably mounted on the top of the rotating platform, a rotating motor (not shown in the figure) is provided inside the rotating platform, the detection table 12 is mounted on the rotating plate, and the output shaft of the rotating motor is connected to the bottom of the rotating plate.

[0035] Additionally, refer to Figure 1 A detection component 2 is provided on the frame 1. As one embodiment of this utility model, the detection component 2 includes a detection probe 21 and a mounting rod 22. The mounting rod 22 is slidably disposed inside the frame 1 in the vertical direction. The detection probe 21 is installed at the bottom of the mounting rod 22 and is located above the detection table 12 and the workpiece 8 to be detected.

[0036] Reference Figure 2 , 3A sliding groove 3 is provided on the inspection table 12 along the horizontal direction. Two sliders 31 are slidably arranged at both ends of the sliding groove 3 along the length of the sliding groove 3. An abutment block 32 is slidably arranged on the top of each slider 31 along the length of the sliding groove 3. An arc-shaped groove 33 is provided on the side wall of the two abutment blocks 32 that are close to each other. The shape of the arc-shaped groove 33 is adapted to the outer wall of the workpiece 8 to be inspected.

[0037] As one embodiment of this utility model, refer to Figure 2 , 3 The slide groove 3 is formed as a T-shaped groove, and the slider 31 is set as a T-shaped block adapted to the slide groove 3; as another possible implementation of this utility model, the slide groove 3 can also be formed as a dovetail groove, and the slider 31 is set as a dovetail block adapted to the slide groove 3.

[0038] Among them, reference Figure 3 A drive assembly 4 is provided on the testing table 12. The drive assembly 4 is used to drive two sliders 31 to move towards each other or away from each other. As one embodiment of this utility model, the drive assembly 4 includes a drive shaft 41 and a lead screw 42. The drive shaft 41 is rotatably disposed on one side of the testing table 12, and the lead screw 42 is rotatably disposed in the slide groove 3 along the length direction of the slide groove 3. The lead screw 42 is connected to the drive shaft 41 for transmission. The slider 31 is threadedly sleeved on the lead screw 42. A knob 43 is fixedly disposed at the end of the drive shaft 41 away from the lead screw 42. The diameter of the knob 43 is larger than the diameter of the drive shaft 41.

[0039] Reference Figure 3 Striped protrusions 44 are provided on the peripheral wall of the knob 43 along the circumference of the knob 43. By providing striped protrusions 44, the friction between the operator's hand and the knob 43 can be effectively increased, thereby making it easier for the operator to rotate the knob 43, thereby achieving the effect of moving the slider 31 in the slide groove 3.

[0040] Reference Figure 3 As one embodiment of this utility model, the lead screw 42 is configured as a bidirectional threaded lead screw, that is, two threads with opposite directions are respectively opened on the left and right halves of the lead screw 42. The pitch of the two threads is equal and the directions of rotation are opposite. By driving the lead screw 42 to rotate, the two sliders 31 can be driven to move synchronously by the same distance in the sliding groove 3 in the direction of approaching or moving away from each other, thereby achieving the effect of fixing the workpiece 8 to be tested at the center of the testing table 12.

[0041] Reference Figure 3 , 4The top of the slider 31 is higher than the groove 3. A strip groove 5 is provided on the top of each slider 31 along the length of the groove 3. A strip block 51 is slidably arranged in the strip groove 5 along the length of the strip groove 5. A connecting block 52 is fixedly arranged on the top of the strip block 51. An abutment block 32 is arranged on the top of the connecting block 52 and the abutment block 32 is detachably connected to the connecting block 52. A limiting member 53 is provided on the connecting block 52 to limit the position of the abutment block 32 on the connecting block 52. A first elastic member 54 is provided in each strip groove 5. Under normal conditions, the first elastic member 54 is used to drive the two strip blocks 51 to move toward each other.

[0042] Among them, reference Figure 3 , 4 A connecting groove 55 is formed at the bottom of the connecting block 52 along the length of the slide groove 3, with both ends of the connecting groove 55 extending through it. The top of the strip block 51 is fixedly connected to the inner top wall of the connecting groove 55, and the portion of the slider 31 extending above the opening of the slide groove 3 is slidably connected to the connecting groove 55. In actual use, the connecting block 52 can completely cover the portion of the slider 31 extending above the slide groove 3, and at the same time, it can also cover the strip groove 5. This provides good protection for the strip block 51 and the first elastic element 54 within the strip groove 5, effectively improving the overall service life of the device.

[0043] As one embodiment of this utility model, refer to Figure 4 The first elastic element 54 is configured as a compression spring, with one end of the first elastic element 54 abutting against the inner wall of the strip groove 5 and the other end abutting against the side wall of the strip block 51; as another possible embodiment of the present invention, the first elastic element 54 may also be configured as a spring sheet, with one side of the spring sheet abutting against the inner wall of the strip groove 5 and the other side abutting against the side wall of the strip block 51.

[0044] Reference Figure 5 In one embodiment of this utility model, the limiting member 53 is configured as a limiting bolt. A slot 56 is provided on the top of the connecting block 52 along the length of the sliding groove 3, with an opening on one side. An insert block 57 is fixedly provided on the bottom of the abutment block 32, and the insert block 57 is slidably inserted into the slot 56. A mounting hole 58 communicating with the slot 56 is provided on the side wall of the connecting block 52 in the horizontal direction, and the limiting bolt is slidably inserted into the mounting hole 58. A threaded hole 59 for threaded connection of the limiting bolt is provided on the side wall of the insert block 57. By releasing the limiting member 53 from restricting the position of the insert block 57 in the slot 56, the abutment block 32 can be disassembled and replaced. Different models of abutment blocks 32 can be replaced according to different sizes of workpieces 8 to be tested, thereby effectively improving the applicability of the device and further enhancing its suitability.

[0045] ReferenceFigure 6 , 7 A mounting block 6 is fixedly provided on the top of each abutment block 32 along the vertical direction. A limiting block 61 is provided on the side wall of the two mounting blocks 6 that are close to each other. The bottom of the limiting block 61 is used to abut against the upper edge of the workpiece 8 to limit the position of the workpiece 8 on the abutment block 32.

[0046] Among them, reference Figure 7 On the sidewalls of the two mounting blocks 6 that are close to each other, along the length of the slide groove 3, there are receiving holes 62. One end of the limiting block 61 is slidably disposed in the receiving hole 62, and the other end extends out of the receiving hole 62. A second elastic member 63 is provided in the receiving hole 62. Under normal conditions, the second elastic member 63 is used to drive the limiting block 61 to move away from the receiving hole 62. An anti-detachment part 64 is provided on the mounting block 6. The anti-detachment part 64 is used to prevent the limiting block 61 from detaching from the receiving hole 62. An inclined surface 65 is provided on the side of the limiting block 61 located outside the receiving hole 62. During the process of placing the workpiece 8 to be tested on the testing table 12, the inclined surface 65 is used to abut against the outer wall of the workpiece 8 to be tested.

[0047] Reference Figure 7 As one embodiment of the present invention, the anti-detachment part 64 is configured as a guard edge. The anti-detachment part 64 is fixedly installed at the opening of the receiving hole 62. A stop block 66 is fixedly installed at one end of the limiting block 61 located inside the receiving hole 62. The stop block 66 is used to abut against the side of the anti-detachment part 64 located inside the receiving hole 62.

[0048] Additionally, refer to Figure 7 As one embodiment of the present invention, the second elastic member 63 is configured as a compression spring, with one end of the second elastic member 63 abutting against the inner wall of the receiving hole 62 and the other end abutting against the outer end face of the stop block 66.

[0049] When it is necessary to position the workpiece 8 to be inspected on the abutment block 32, the workpiece 8 is placed in the arc-shaped groove 33, and then the upper edge of the workpiece 8 is abutted by the limiting block 61. Then, the two abutment blocks 32 are moved closer to each other. At this time, the workpiece 8 has an upward tendency to move along the arc-shaped groove 33 under the clamping action of the abutment block 32. At this time, the bottom of the limiting block 61 abuts against the upper edge of the workpiece 8, which can more firmly limit the workpiece 8 to be inspected on the abutment block 32, making the position of the workpiece 8 more stable and reliable during the inspection process, and further ensuring the accuracy of the inspection.

[0050] In addition, when installing the workpiece 8 to be tested, since the end of the limiting block 61 is set as an inclined surface 65, the inclined surface 65 abuts against the outer wall of the workpiece 8 to be tested during the process of placing the workpiece 8 to be tested on the testing table 12, which makes it easier to install the workpiece 8 to be tested and effectively improves the overall reliability and stability of the device in actual use.

[0051] Reference Figure 3 , 4 and Figure 6 An anti-slip pad 7 is fixedly installed on the inner wall of the arc-shaped groove 33. The anti-slip pad 7 is used to abut against the outer wall of the workpiece 8 to be inspected. Anti-slip patterns are provided on the anti-slip pad 7. The anti-slip patterns can effectively increase the friction coefficient between the abutment block 32 and the workpiece 8 to be inspected, thereby increasing the friction force between the abutment block 32 and the workpiece 8 to be inspected, and thus improving the installation stability of the workpiece 8 to be inspected in the arc-shaped groove 33 on the abutment block 32.

[0052] The implementation principle of the workpiece positioning device for sphericity detection proposed in this embodiment of the utility model is as follows:

[0053] In actual use, depending on the size of the workpiece 8 to be inspected, the two sliders 31 are adjusted by the drive assembly 4 to move towards or away from each other. The sliders 31 drive the abutment blocks 32 to move, thereby adjusting the distance between the two abutment blocks 32 to match the size of the workpiece 8 to be inspected. Then, the workpiece 8 to be inspected is placed in the arc-shaped groove 33 on the abutment block 32. During the downward installation of the workpiece 8 to be inspected, the outer wall of the workpiece 8 first abuts against the inclined surface 65 at the end of the limiting block 61. As the workpiece 8 to be inspected continues to move downward, the limiting block 61 is eventually pressed into the receiving hole 62. When the bottom of the workpiece 8 to be inspected abuts against the anti-slip pad 7 on the arc-shaped groove 33, the limiting block 61 disengages from the outer wall of the workpiece 8 to be inspected. At this time, the limiting block 61 pops out of the receiving hole 62 under the action of the second elastic element 63, and then rotates again. The rotary knob 43 drives the lead screw 42 to rotate, causing the two sliders 31 to move towards each other, which in turn causes the two abutment blocks 32 to move towards each other. At this time, the workpiece 8 to be tested, under the clamping action of the two abutment blocks 32, tends to move upward along the arc groove 33, so that the upper edge of the workpiece 8 to be tested abuts against the bottom of the limiting block 61. As the two sliders 31 continue to move towards each other, the first elastic element 54 is compressed, and the first elastic element 54 then applies elastic potential energy to the abutment blocks 32, causing the two abutment blocks 32 to tend to move towards each other. Finally, under the double fixing effect of the abutment blocks 32 and the limiting block 61, the workpiece 8 to be tested is positioned on the testing table 12. In the subsequent testing process, it can effectively prevent the workpiece 8 to be tested from shifting position on the testing table 12, thereby improving the accuracy of the testing of the workpiece 8 to be tested.

[0054] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spherical cover positioning device for sphericity detection, comprising a frame (1), a mounting plate (11) disposed on the frame (1), a detection table (12) rotatably mounted on the top of the mounting plate (11) in a vertical direction, a workpiece (8) to be detected placed on the detection table (12), a rotating component (13) capable of driving the detection table (12) to rotate disposed on the mounting plate (11), and a detection assembly (2) disposed on the frame (1), characterized in that: A sliding groove (3) is provided on the inspection table (12) along the horizontal direction. Slider (31) is slidably provided at both ends of the sliding groove (3) along the length of the sliding groove (3). An abutment block (32) is provided on the top of each slider (31). An arc-shaped groove (33) is provided on the side wall of the two abutment blocks (32) that are close to each other. The shape of the arc-shaped groove (33) is adapted to the outer wall of the workpiece (8) to be inspected. A driving assembly (4) is provided on the inspection table (12). The driving assembly (4) is used to drive the two sliders (31) to move towards each other or away from each other.

2. The spherical cover positioning device for sphericity detection according to claim 1, characterized in that: The drive assembly (4) includes a drive shaft (41) and a lead screw (42). The drive shaft (41) is rotatably mounted on one side of the testing table (12). The lead screw (42) is rotatably mounted in the slide groove (3) along the length direction of the slide groove (3). The lead screw (42) is connected to the drive shaft (41) in a transmission manner. The slider (31) is threaded onto the lead screw (42). A knob (43) is fixedly mounted at the end of the drive shaft (41) away from the lead screw (42). The diameter of the knob (43) is larger than the diameter of the drive shaft (41).

3. A spherical cover positioning device for sphericity detection according to claim 1, characterized in that: A strip groove (5) is provided on the top of each slider (31) along the length of the groove (3). A strip block (51) is slidably arranged in the strip groove (5) along the length of the strip groove (5). A connecting block (52) is fixedly arranged on the top of the strip block (51). The abutting block (32) is arranged on the top of the connecting block (52). The abutting block (32) and the connecting block (52) are detachably connected. A limiting member (53) is provided on the connecting block (52). The limiting member (53) is used to limit the position of the abutting block (32) on the connecting block (52). A first elastic member (54) is provided in each strip groove (5). The first elastic member (54) is used to drive the two strip blocks (51) to move toward each other.

4. A spherical cover positioning device for sphericity detection according to claim 3, characterized in that: The limiting member (53) is set as a limiting bolt. A slot (56) is provided on the top of the connecting block (52) along the length direction of the slide groove (3). The slot (56) is open on one side. An insert (57) is fixedly provided at the bottom of the abutting block (32). The insert (57) is slidably inserted into the slot (56). An installation hole (58) communicating with the slot (56) is provided on the side wall of the connecting block (52) in the horizontal direction. The limiting bolt is slidably inserted into the installation hole (58). A threaded hole (59) for threaded connection of the limiting bolt is provided on the side wall of the insert (57).

5. A spherical cover positioning device for sphericity detection according to claim 1, characterized in that: A mounting block (6) is fixedly provided on the top of each abutment block (32) along the vertical direction. A limiting block (61) is provided on the side wall of the two mounting blocks (6) that are close to each other. The bottom of the limiting block (61) is used to abut against the upper edge of the workpiece (8) to limit the position of the workpiece (8) on the abutment block (32).

6. A spherical cover positioning device for sphericity detection according to claim 5, characterized in that: Receiving holes (62) are provided on the sidewalls of the two mounting blocks (6) that are close to each other along the length of the slide groove (3). One end of the limiting block (61) is slidably disposed in the receiving hole (62), and the other end extends out of the receiving hole (62). A second elastic element (63) is provided in the receiving hole (62). The second elastic element (63) is used to drive the limiting block (61) to move away from the receiving hole (62). An anti-detachment part (64) is provided on the mounting block (6). The anti-detachment part (64) is used to prevent the limiting block (61) from detaching from the receiving hole (62). An inclined surface (65) is provided on the side of the limiting block (61) located outside the receiving hole (62). The inclined surface (65) is used to abut against the outer wall of the workpiece (8) to be tested.

7. A spherical cover positioning device for sphericity detection according to claim 6, characterized in that: The anti-detachment part (64) is configured as a guard edge. The anti-detachment part (64) is fixedly installed at the opening of the receiving hole (62). A stop block (66) is fixedly installed at one end of the limiting block (61) located in the receiving hole (62). The stop block (66) is used to abut against the side of the anti-detachment part (64) located in the receiving hole (62).

8. A spherical cover positioning device for sphericity detection according to claim 3, characterized in that: The top of the slider (31) extends above the top opening of the groove (3). A connecting groove (55) is provided at the bottom of the connecting block (52) along the length of the groove (3). Both ends of the connecting groove (55) are through-holes. The top of the strip block (51) is fixedly connected to the inner top wall of the connecting groove (55). The part of the slider (31) that extends above the opening of the groove (3) is slidably connected to the connecting groove (55).

9. A spherical cover positioning device for sphericity detection according to any one of claims 1-8, characterized in that: An anti-slip pad (7) is fixedly provided on the inner wall of the arc-shaped groove (33). The anti-slip pad (7) is used to abut against the outer wall of the workpiece (8) to be inspected. Anti-slip patterns are provided on the anti-slip pad (7).

10. A spherical cover positioning device for sphericity detection according to claim 2, characterized in that: The lead screw (42) is configured as a bidirectional threaded lead screw. The left and right halves of the lead screw (42) are respectively provided with threads with opposite directions of rotation. The pitch of the two threads is equal and the directions of rotation are opposite.

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