Workbench for spherical cover sphericity detection device

Abstract

The utility model provides a workbench for a spherical cover sphericity detection device. The workbench comprises a bottom plate, a leveling platform is arranged at the top of the bottom plate, a detection platform is arranged at the top of the leveling platform, a leveling assembly is arranged on the bottom plate, and an aligning assembly is arranged on the leveling platform; each leveling assembly comprises a leveling motor and a leveling rod, the leveling motor is fixedly arranged on the bottom plate, the leveling rod is vertically arranged, the bottom of the leveling rod is in transmission connection with an output shaft of the leveling motor, the other end of the leveling rod is connected with the bottom of the leveling platform, and multiple sets of leveling assemblies are arranged; the self-aligning assembly comprises a first self-aligning device and a second self-aligning device. The precision of sphericity detection of the to-be-detected spherical cover body can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a workbench for a spherical mask body sphericity detection device. BACKGROUND

[0002] The content of this part only provides background information related to the present application, which may not constitute prior art.

[0003] The sphericity of the spherical mask body workpiece is crucial for the production of the spherical mask body workpiece, especially the flaw detection of the spherical mask body, which has important reference significance for the production, equipment and later use of the spherical mask body and the lens. The spherical mask body is widely used in the field of monitoring equipment. The monitoring device with the spherical mask body is suitable for various monitoring scenes, such as traffic flow, public safety, school and hospital security, etc. In outdoor environment, the spherical mask body can prevent the influence of strong sunlight, wind, sand, rain and snow on the monitoring quality. At the same time, the spherical mask body not only plays a protective role, but also can enhance the image quality of the video.

[0004] For the spherical mask body, the spherical mask body with higher sphericity precision can make the video picture of the monitoring shooting clearer. The production and manufacture of high-precision spherical mask body can be completely realized in today's industrial production. However, there will be a certain rate of defective products in industrial production, so it is necessary to detect the sphericity of the completed spherical mask body, so as to achieve the effect of eliminating defective products.

[0005] When detecting the spherical mask body, the spherical mask body usually needs to be placed on the detection table, and then the inner wall of the spherical mask body is scanned and detected by the upper probe. In order to improve the reliability and accuracy of detection, the detection table needs to be continuously twisted to scan the inside of the spherical mask body in all directions. However, in the above process, since the spherical mask body is placed on the detection table, if the spherical mask body is not placed exactly on the detection table shaft axis, with the rotation of the detection table, the rotation of the spherical mask body has a certain center deviation, which has a certain influence on the detection scanning, and further affects the precision of the sphericity detection of the spherical mask body. SUMMARY

[0006] In order to solve the above technical problems, the purpose of the present application is to provide a workbench for a spherical mask body sphericity detection device, which can improve the precision of sphericity detection of the spherical mask body to be detected.

[0007] The purpose of the present application is achieved by the following technical solutions:

[0008] The utility model provides a kind of spherical mask sphericity detection device workbench, including bottom plate, setting with adjusting platform on the top of bottom plate, setting with detection table on the top of adjusting platform, setting with leveling assembly on bottom plate, setting with centering assembly on adjusting platform;The leveling assembly includes leveling motor and leveling rod, the leveling motor is fixedly arranged on bottom plate, the leveling rod is vertically arranged, the bottom of the leveling rod is drivingly connected with the output shaft of leveling motor, the other end is connected with the bottom of adjusting platform, the leveling assembly is provided with multiple groups;The centering assembly includes first centering device and second centering device, the length direction of the first centering support and the second centering support is perpendicular to each other, first centering block is slidably arranged on the first centering support along the length direction of first centering support, the first driving assembly is used to drive first centering block to move on the first centering support, vertical plate is fixedly arranged on the side wall of first centering block, one end of the second centering support is fixedly connected with the vertical plate away from the side wall of first centering block, second centering block is fixedly arranged on the second centering support, the second driving assembly is used to drive second centering block to move on the second centering support, the detection table is arranged on the second centering block, and the top of the second centering block is flush with the top of the first centering block.

[0009] In some possible embodiments, the first centering device includes a first centering support and a first driving assembly, the second centering device includes a second centering support and a second centering assembly, the length direction of the first centering support and the second centering support is perpendicular to each other, first centering block is slidably arranged on the first centering support along the length direction of first centering support, the first driving assembly is used to drive first centering block to move on the first centering support, vertical plate is fixedly arranged on the side wall of first centering block, one end of the second centering support is fixedly connected with the vertical plate away from the side wall of first centering block, second centering block is fixedly arranged on the second centering support, the second driving assembly is used to drive second centering block to move on the second centering support, the detection table is arranged on the second centering block, and the top of the second centering block is flush with the top of the first centering block.

[0010] In some possible embodiments, horizontal plate is fixedly arranged on the top of vertical plate, and the horizontal plate is connected with the top of the first centering block, the first driving assembly includes a first driving member and a first driving rod, the first driving member is fixedly arranged on the first centering support, and the first driving rod is fixedly arranged on the first centering support along the length direction of the first centering support, the first centering block is slidably arranged on the first driving rod, and the output end of the first driving member is drivingly connected with the first driving rod to drive the first centering block to move.

[0011] In some possible embodiments, first guide rail is fixedly arranged on the first centering support along the length direction of the first centering support, first guide groove is formed in the bottom of the first centering block for the sliding connection of the first guide rail, first baffle is fixedly arranged on the first centering support along the length direction of the first centering support, the first baffle is provided with two, two first baffles are separately arranged on the two sides of the first guide rail, and the side wall of the two first baffles close to each other is used for the sliding connection with the side wall of the first centering block.

[0012] In some possible embodiments, the second driving assembly comprises a second driving member and a second driving rod, a support is fixedly arranged at one end of the second aligning support away from the vertical plate, the second driving member is fixedly arranged on the support, the second driving rod is fixedly arranged on the second aligning support along the length direction of the second aligning support, the second aligning block is slidingly sleeved on the second driving rod, and the output end of the second driving member is in transmission connection with the second driving rod to drive the second aligning block to move.

[0013] In some possible embodiments, a second guide rail is fixedly arranged on the second aligning support along the length direction of the second aligning support, a second guide groove is arranged at the bottom of the second aligning block for sliding connection of the second guide rail, and two second baffles are fixedly arranged on the second aligning support along the length direction of the second aligning support, the two second baffles are arranged on the two sides of the second guide rail, and the side walls of the two second baffles that are close to each other are used for sliding connection with the side walls of the second aligning block.

[0014] In some possible embodiments, a connecting block is arranged at the top of the second aligning block, the connecting block is detachably connected with the second aligning block, a connecting plate is fixedly arranged on the top of the connecting block in the horizontal direction, and the connecting plate is detachably connected with the detection table.

[0015] In some possible embodiments, a first cylindrical baffle is fixedly arranged on the bottom plate, the leveling assembly is located inside the first cylindrical baffle, a connecting ring is fixedly arranged on the top of the first cylindrical baffle along the circumference of the first cylindrical baffle, an external thread is arranged on the outer circumferential wall of the connecting ring, a second cylindrical baffle is arranged on the top of the first cylindrical baffle, an internal thread is arranged on the inner circumferential wall of the second cylindrical baffle, and the internal thread is matched with the external thread.

[0016] In some possible embodiments, a positioning groove is arranged at the top of the detection table, and the positioning groove is located at the central position of the detection table.

[0017] In summary, the technical scheme of the embodiment of the application has at least the following advantages and beneficial effects:

[0018] 1. In actual use, the spherical mask to be detected is placed on the detection table, then the leveling assembly is used to level the leveling platform, and after the leveling of the leveling platform is completed, the position of the detection table is adjusted by the aligning assembly, so that the center of the spherical mask to be detected is perpendicular to the rotation axis of the device as a whole, thereby effectively reducing or even avoiding the center deviation of the spherical mask to be detected during rotation, and the precision of the spherical degree detection of the spherical mask to be detected is effectively improved.

[0019] 2. Before detecting the spherical mask body to be detected, after leveling, respectively start the first aligning assembly and the second aligning assembly, adjust the position of the detection table, since the length direction of the first aligning support and the second aligning support is perpendicular to each other, thus forming perpendicular coordinates on the horizontal plane, with the movement of the first aligning block and the second aligning block, the adjustment of the position of the detection table can be completed, in the above process, since the top of the second aligning block and the top of the first aligning block are flush, and at the same time, since the detection table is located on the second aligning block, the overall size of the device in the vertical direction can be effectively reduced, the device is more compact, and more space is left for the detection device, which can further improve the detection precision of the spherical mask body to be detected;

[0020] 3. In the process of moving the first aligning block on the first aligning support and the second aligning block on the second aligning support, the first aligning block slides on the first guide rail through the first guide slot, and the second aligning block slides on the second guide rail through the second guide slot, thus effectively guiding the movement of the first aligning block and the second aligning block, and improving the movement precision of the first aligning block and the second aligning block;

[0021] 4. By setting the first cylindrical enclosure and the second cylindrical enclosure outside the device, the overall device is shielded and enclosed, which can effectively reduce the influence of the external environment on the overall device, and at the same time, the second cylindrical enclosure and the first cylindrical enclosure are connected through the inner thread and the outer thread engaged with each other, which can more conveniently disassemble the second cylindrical enclosure above, thus facilitating the maintenance and repair of the transmission device of the aligning assembly inside, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0023] Figure 2 It is a schematic diagram of the aligning assembly of the embodiment of the application;

[0024] Figure 3 It is a schematic diagram of the first aligning device of the embodiment of the application;

[0025] Figure 4 It is a schematic diagram of the second aligning device of the embodiment of the application;

[0026] Figure 5 It is an exploded schematic diagram of the connecting block and the connecting plate of the embodiment of the application;

[0027] Figure 6 It is a schematic diagram of the first cylindrical enclosure and the second cylindrical enclosure of the embodiment of the application;

[0028] Figure 7A sectional view of the second cylindrical enclosure of the embodiment of the present application.

[0029] Icon: 1, base plate; 11, adjusting platform; 12, detection table; 2, leveling assembly; 21, leveling motor; 22, leveling rod; 3, centering assembly; 31, first centering device; 32, second centering device; 41, first centering support; 42, first driving assembly; 421, first driving piece; 422, first driving rod; 43, first centering block; 44, vertical plate; 45, horizontal plate; 46, first guide rail; 47, first guide groove; 48, first baffle; 51, second centering support; 52, second driving assembly; 521, second driving piece; 522, second driving rod; 53, second centering block; 54, bracket; 55, second guide rail; 56, second guide groove; 57, second baffle; 58, connecting block; 59, connecting plate; 6, first cylindrical enclosure; 61, connecting ring; 62, external thread; 63, second cylindrical enclosure; 64, internal thread; 7, positioning groove. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] The following refers to Figures 1 to 7 The present application is further described in detail.

[0032] Reference is made to Figure 1 A worktable for a spherical mask body sphericity detection device includes a base plate 1, an adjusting platform 11 is arranged on the top of the base plate 1, a detection table 12 is arranged on the top of the adjusting platform 11, a leveling assembly 2 is arranged on the base plate 1, and a centering assembly 3 is arranged on the adjusting platform 11.

[0033] Reference is made to Figure 1 As an embodiment of the present application, the leveling assembly 2 includes a leveling motor 21 and a leveling rod 22, the leveling motor 21 is fixedly arranged on the base plate 1, the leveling rod 22 is vertically arranged, the bottom of the leveling rod 22 is in transmission connection with the output shaft of the leveling motor 21, and the other end is connected with the bottom of the adjusting platform 11, and the leveling assembly 2 is provided with multiple groups.

[0034] Reference is made to Figure 1 As an embodiment of the present application, the leveling assembly 2 is provided with four groups, each group of the leveling assembly 2 includes the leveling motor 21 and the leveling rod 22, the four groups of the leveling assembly 2 are uniformly distributed along the circumferential direction of the base plate 1, and the included angle between the adjacent two groups of the leveling assembly 2 is 90°.

[0035] With reference to Figures 2 to 4 , the centering assembly 3 comprises a first centering device 31 and a second centering device 32.

[0036] With reference to Figure 2 and Figure 3 , the first centering device 31 comprises a first centering support 41 and a first driving assembly 42, with reference to Figure 2 and Figure 4 , the second centering device 32 comprises a second centering support 51 and a second centering assembly 3. The length directions of the first centering support 41 and the second centering support 51 are perpendicular to each other, the first centering block 43 is slidingly arranged on the first centering support 41 along the length direction of the first centering support 41, the first driving assembly 42 is used to drive the first centering block 43 to move on the first centering support 41, the vertical plate 44 is fixedly arranged on the side wall of the first centering block 43, one end of the second centering support 51 is fixedly connected with the side wall of the vertical plate 44 away from the first centering block 43, the second centering block 53 is fixedly arranged on the second centering support 51, the second driving assembly 52 is used to drive the second centering block 53 to move on the second centering support 51, the detection table 12 is arranged on the second centering block 53, and the top of the second centering block 53 is flush with the top of the first centering block 43.

[0037] Before detecting the spherical mask body to be detected, after leveling is completed, the first centering assembly 3 and the second centering assembly 3 are respectively started to adjust the position of the detection table 12. Since the length directions of the first centering support 41 and the second centering support 51 are perpendicular to each other, coordinates perpendicular to each other can be formed on the horizontal plane. With the movement of the first centering block 43 and the second centering block 53, the adjustment of the position of the detection table 12 can be completed. In the above process, since the top of the second centering block 53 is flush with the top of the first centering block 43, and since the detection table 12 is located on the second centering block 53, the overall size of the device in the vertical direction can be effectively reduced, the device is more compact, more space is left for the detection device, and the detection precision of the spherical mask body to be detected can be further improved.

[0038] With reference to Figure 4 , the horizontal plate 45 is fixedly arranged on the top of the vertical plate 44, the horizontal plate 45 is connected with the top of the first centering block 43, the first driving assembly 42 comprises the first driving member 421 and the first driving rod 422, the first driving member 421 is fixedly arranged on the first centering support 41, the first driving rod 422 is fixedly arranged on the first centering support 41 along the length direction of the first centering support 41, the first centering block 43 is slidingly arranged on the first driving rod 422, and the output end of the first driving member 421 is in transmission connection with the first driving rod 422 to drive the first centering block 43 to move.

[0039] With reference to Figure 3 The first guide rail 46 is fixedly arranged on the first aligning support 41 along the length direction of the first aligning support 41, the first guide groove 47 is arranged on the bottom of the first aligning block 43 for sliding connection of the first guide rail 46, the first baffle 48 is fixedly arranged on the first aligning support 41 along the length direction of the first aligning support 41, the first baffle 48 is provided with two, the two first baffles 48 are arranged on the two sides of the first guide rail 46, and the side walls of the two first baffles 48 close to each other are used for sliding connection with the side walls of the first aligning block 43.

[0040] With reference to Figure 4 The second driving assembly 52 comprises a second driving member 521 and a second driving rod 522, the bracket 54 is fixedly arranged on the end of the second aligning support 51 away from the vertical plate 44, the second driving member 521 is fixedly arranged on the bracket 54, the second driving rod 522 is fixedly arranged on the second aligning support 51 along the length direction of the second aligning support 51, the second aligning block 53 is slidingly arranged on the second driving rod 522, and the output end of the second driving member 521 is in transmission connection with the second driving rod 522 to drive the second aligning block 53 to move.

[0041] With reference to Figure 4 The second guide rail 55 is fixedly arranged on the second aligning support 51 along the length direction of the second aligning support 51, the second guide groove 56 is arranged on the bottom of the second aligning block 53 for sliding connection of the second guide rail 55, the second baffle 57 is fixedly arranged on the second aligning support 51 along the length direction of the second aligning support 51, the second baffle 57 is provided with two, the two second baffles 57 are arranged on the two sides of the second guide rail 55, and the side walls of the two second baffles 57 close to each other are used for sliding connection with the side walls of the second aligning block 53.

[0042] During the movement of the first aligning block 43 on the first aligning support 41 and the movement of the second aligning block 53 on the second aligning support 51, the first aligning block 43 slides on the first guide rail 46 through the first guide groove 47, and the second aligning block 53 slides on the second guide rail 55 through the second guide groove 56, so that the movement of the first aligning block 43 and the second aligning block 53 is effectively guided, and the movement precision of the first aligning block 43 and the second aligning block 53 is improved.

[0043] With reference to Figure 5 The connecting block 58 is arranged on the top of the second aligning block 53, and the connecting block 58 is detachably connected with the second aligning block 53. As a possible implementation manner of the application, the connecting block 58 and the second aligning block 53 are connected with each other in a bolt connection manner, the connecting plate 59 is fixedly arranged on the top of the connecting block 58 along the horizontal direction, and the connecting plate 59 is detachably connected with the detection table 12.

[0044] Referring to Figure 6 and Figure 7 The first cylindrical enclosure 6 is fixedly arranged on the base plate 1, the leveling assembly 2 is located inside the first cylindrical enclosure 6, a connecting ring 61 is fixedly arranged on the top of the first cylindrical enclosure 6 along the circumference of the first cylindrical enclosure 6, an external thread 62 is arranged on the outer circumferential wall of the connecting ring 61, a second cylindrical enclosure 63 is arranged on the top of the first cylindrical enclosure 6, an internal thread 64 is arranged on the inner circumferential wall of the second cylindrical enclosure 63, and the internal thread 64 is matched with the external thread 62.

[0045] The first cylindrical enclosure 6 and the second cylindrical enclosure 63 arranged outside the device can shield and enclose the device as a whole, effectively reducing the influence of the external environment on the device as a whole, and the second cylindrical enclosure 63 and the first cylindrical enclosure 6 are connected through the mutually engaged internal thread 64 and the external thread 62, which can more conveniently disassemble the second cylindrical enclosure 63 above, thereby facilitating the maintenance and repair of the transmission device of the centering assembly 3 inside, and the operation is more convenient.

[0046] Referring to Figure 6 The positioning groove 7 is arranged on the top of the detection table 12 and is located at the center of the detection table 12. When the spherical cover body is detected, the position of the spherical cover body can be preliminarily limited through the positioning groove 7 when the bottom of the spherical cover body is placed on the detection table 12, the positional deviation of the spherical cover body on the detection table 12 during detection can be avoided to a certain extent, and the detection accuracy can be effectively improved.

[0047] The working principle of the detection device for the spherical cover body according to the embodiment of the present application is as follows:

[0048] In actual use, the spherical cover body to be detected is placed on the detection table 12, then the leveling assembly 2 is used to level the leveling platform 11, and then the position of the detection table 12 is adjusted through the centering assembly 3 after the leveling of the leveling platform 11 is completed, so that the center of the spherical cover body to be detected is perpendicular to the rotation axis of the device as a whole, thereby effectively reducing or even avoiding the center deviation of the spherical cover body to be detected during rotation, and the detection accuracy of the spherical cover body to be detected can be effectively improved.

[0049] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A worktable for a sphericity testing device for a spherical cover, characterized in that: Includes a base plate (1), an adjustment platform (11) is provided on the top of the base plate (1), a testing table (12) is provided on the top of the adjustment platform (11), a leveling component (2) is provided on the base plate (1), and a centering component (3) is provided on the adjustment platform (11). The leveling assembly (2) includes a leveling motor (21) and a leveling rod (22). The leveling motor (21) is fixedly mounted on the base plate (1). The leveling rod (22) is vertically mounted. The bottom of the leveling rod (22) is connected to the output shaft of the leveling motor (21) and the other end is connected to the bottom of the leveling platform (11). The leveling assembly (2) is provided with multiple sets. The self-aligning assembly (3) includes a first self-aligning device (31) and a second self-aligning device (32).

2. The worktable for a sphericity testing device for a spherical cover according to claim 1, characterized in that: The first self-aligning device (31) includes a first self-aligning support (41) and a first driving assembly (42). The second self-aligning device (32) includes a second self-aligning support (51) and a second self-aligning assembly (3). The length directions of the first self-aligning support (41) and the second self-aligning support (51) are perpendicular to each other. A first self-aligning block (43) is slidably disposed on the first self-aligning support (41) along the length direction of the first self-aligning support (41). The first driving assembly (42) is used to drive the first self-aligning block (43) to move on the first self-aligning support (41). A vertical plate (44) is fixedly installed on the side wall of the first self-aligning block (43). One end of the second self-aligning support (51) is fixedly connected to the side wall of the vertical plate (44) away from the first self-aligning block (43). A second self-aligning block (53) is fixedly installed on the second self-aligning support (51). A second driving assembly (52) is used to drive the second self-aligning block (53) to move on the second self-aligning support (51). The detection table (12) is installed on the second self-aligning block (53). The top of the second self-aligning block (53) is flush with the top of the first self-aligning block (43).

3. The worktable for a sphericity testing device for a spherical cover according to claim 2, characterized in that: A horizontal plate (45) is fixedly installed on the top of the vertical plate (44). The horizontal plate (45) is connected to the top of the first self-aligning block (43). The first driving assembly (42) includes a first driving member (421) and a first driving rod (422). The first driving member (421) is fixedly installed on the first self-aligning support (41). The first driving rod (422) is fixedly installed on the first self-aligning support (41) along the length direction of the first self-aligning support (41). The first self-aligning block (43) is slidably sleeved on the first driving rod (422). The output end of the first driving member (421) is connected to the first driving rod (422) to drive the first self-aligning block (43) to move.

4. The worktable for a sphericity testing device for a spherical cover according to claim 3, characterized in that: A first guide rail (46) is fixedly provided on the first self-aligning support (41) along the length direction of the first self-aligning support (41). A first guide groove (47) is provided at the bottom of the first self-aligning block (43) for sliding connection of the first guide rail (46). A first baffle (48) is fixedly provided on the first self-aligning support (41) along the length direction of the first self-aligning support (41). There are two first baffles (48), which are respectively provided on both sides of the first guide rail (46). The side walls of the two first baffles (48) that are close to each other are used to slide and connect with the side wall of the first self-aligning block (43).

5. The worktable for a sphericity testing device for a spherical cover according to claim 2, characterized in that: The second drive assembly (52) includes a second drive member (521) and a second drive rod (522). A bracket (54) is fixedly provided at one end of the second self-aligning support (51) away from the vertical plate (44). The second drive member (521) is fixedly provided on the bracket (54). The second drive rod (522) is fixedly provided on the second self-aligning support (51) along the length direction of the second self-aligning support (51). The second self-aligning block (53) is slidably sleeved on the second drive rod (522). The output end of the second drive member (521) is connected to the second drive rod (522) to drive the second self-aligning block (53) to move.

6. The worktable for a sphericity testing device for a spherical cover according to claim 5, characterized in that: A second guide rail (55) is fixedly provided on the second self-aligning support (51) along the length direction of the second self-aligning support (51). A second guide groove (56) is provided at the bottom of the second self-aligning block (53) for sliding connection of the second guide rail (55). A second baffle (57) is fixedly provided on the second self-aligning support (51) along the length direction of the second self-aligning support (51). There are two second baffles (57), which are respectively provided on both sides of the second guide rail (55). The side walls of the two second baffles (57) that are close to each other are used to slide and connect with the side wall of the second self-aligning block (53).

7. The worktable for a sphericity testing device for a spherical cover according to claim 5, characterized in that: A connecting block (58) is provided on the top of the second self-aligning block (53), and the connecting block (58) is detachably connected to the second self-aligning block (53). A connecting plate (59) is fixedly provided on the top of the connecting block (58) in the horizontal direction, and the connecting plate (59) is detachably connected to the testing table (12).

8. A worktable for a sphericity testing device for a spherical cover according to any one of claims 1-7, characterized in that: A first cylindrical enclosure (6) is fixedly installed on the base plate (1). The leveling component (2) is located inside the first cylindrical enclosure (6). A connecting ring (61) is fixedly installed on the top of the first cylindrical enclosure (6) along the circumference of the first cylindrical enclosure (6). An external thread (62) is provided on the outer peripheral wall of the connecting ring (61). A second cylindrical enclosure (63) is installed on the top of the first cylindrical enclosure (6). An internal thread (64) is provided on the inner peripheral wall of the second cylindrical enclosure (63). The internal thread (64) is adapted to the external thread (62).

9. A worktable for a sphericity testing device for a spherical cover according to any one of claims 1-7, characterized in that: A positioning groove (7) is provided on the top of the testing table (12), and the positioning groove (7) is located at the center of the testing table (12).

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