Surface flatness detection device for machining precision hardware shell of numerical control machine tool

Abstract

The invention relates to the technical field of flatness detection devices, and discloses a surface flatness detection device for numerical control machine tool precision hardware shell machining, which comprises a supporting seat, supporting columns are arranged on the left side and the right side of the bottom of the supporting seat, and a stand column penetrating to the top of the supporting seat is arranged on the inner bottom wall of the supporting seat. A workpiece containing table is arranged at the top of the stand column, a protection assembly located on the outer side of the workpiece containing table is arranged at the top of the supporting base, a rotating assembly which extends to the outer side of the supporting base and is arranged on the outer side of the stand column in a sleeving mode is arranged in the supporting base, and a supporting adjusting mechanism located on the outer side of the workpiece containing table is arranged at the top of the rotating assembly. According to the surface flatness detection device for machining the precision hardware shell of the numerical control machine tool, the cleanliness of the hardware shell during detection is effectively improved, the protection effect of the device is effectively improved, a user can effectively and conveniently adjust the flatness detection device, the detection efficiency and adaptability of the device are effectively improved, and the device is convenient to use by the user.

Description

Technical Field

[0001] The present invention relates to the technical field of flatness detection devices, and more specifically to a surface flatness detection device for the processing of precision hardware shells of numerically controlled machine tools. Background Art

[0002] After retrieval, the Chinese patent publication number CN215217569U discloses a surface flatness detection device for the processing of precision hardware shells, including a base. A positioning cylinder is fixedly connected to the top of the base. A lifting adjustment mechanism is arranged inside the positioning cylinder. A positioning ring is arranged at the top of the lifting adjustment mechanism. An electronic observation mirror is inserted into the positioning ring. When this technical solution is used, the placement platform for the hardware shell lacks a structure for protecting it, making it easy for the placement platform and the hardware shell to be detected to adhere to dust in the air, thus affecting the accuracy and reliability of the detection results. Moreover, when this flatness detection device is used, it can only adjust the support height at a fixed position, requiring the operator to frequently manually adjust the placement position of the hardware shell to ensure that its outer surface can be comprehensively detected. This not only increases the labor intensity of the operator but also reduces the detection efficiency, with poor applicability and inability to meet the usage requirements. Therefore, a surface flatness detection device for the processing of precision hardware shells of numerically controlled machine tools is proposed to solve the above-mentioned problems. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a surface flatness detection device for the processing of precision hardware shells of numerically controlled machine tools, which has the advantages of effectively improving the protection effect of the device, effectively facilitating the adjustment of the device by the user, and improving the detection efficiency, and solves the problems raised in the above background art.

[0004] To achieve the purpose of effectively improving the protection effect of the device, effectively facilitating the adjustment of the device by the user, and improving the detection efficiency, the present invention provides the following technical solution: A surface flatness detection device for the processing of precision hardware shells of numerically controlled machine tools, including a support base. Support columns are arranged on both the left and right sides of the bottom of the support base. A column penetrating through to the top is arranged on the inner bottom wall of the support base. A workpiece placement table is arranged at the top of the column. A protection component is arranged on the top of the support base outside the workpiece placement table. A rotation component extending to the outside of the support base and sleeved outside the column is arranged inside the support base. A support adjustment mechanism is arranged at the top of the rotation component outside the workpiece placement table. A detection mechanism is arranged at the top of the support adjustment mechanism. The protection component includes a protection frame. A protection frame located outside the workpiece placement table is fixedly installed at the top of the support base. An installation plate extending into its interior is fixedly installed at the top of the protection frame. A lighting work lamp penetrating to its bottom is fixedly installed at the top of the installation plate. A protection door penetrating to its interior and fitting with its inner top wall is movably installed on the left side of the protection frame. A transparent viewing window is opened inside the protection door.

[0005] Preferably, the rotation component includes a rotating sleeve. A rotating sleeve penetrating the inner top wall of the support base is rotatably installed on the outer side of the column. A driving worm gear located inside the support base is fixedly installed on the outer side of the rotating sleeve. A control worm gear penetrating to its front side and meshing with the driving worm gear is rotatably installed on the rear side of the inner wall of the support base. A control handwheel is fixedly installed on the front side of the control worm gear. A guiding ring located outside the rotating sleeve is fixedly installed at the top of the support base. A rotating plate extending above the guiding ring is fixedly installed on the outer side of the rotating sleeve. A sliding block extending into the guiding ring is fixedly installed at the bottom of the rotating plate.

[0006] Preferably, the support adjustment mechanism includes a support frame. A support frame located on the left side of the workpiece placement table is fixedly installed at the top of the rotating plate. An adjustment screw rod is rotatably installed on the inner bottom wall of the support frame. A servo motor located on the right side of the support frame is fixedly installed at the top of the rotating plate. Driving gears are fixedly installed on the output shaft of the servo motor and the outer side of the adjustment screw rod respectively. The two driving gears mesh with each other. A threaded sleeve column extending to its top and penetrating to the top of the support frame is threadedly installed on the outer side of the adjustment screw rod. Guide columns located on the front and rear sides of the threaded sleeve column are fixedly installed between the upper and lower sides of the inner wall of the support frame. A guide plate sleeving on the adjustment screw rod and the guide columns and fitting with the inner wall of the support frame is fixedly connected to the bottom of the threaded sleeve column.

[0007] Preferably, the detection mechanism includes an installation frame. An installation frame is fixedly installed at the top of the threaded sleeve column. A connection block extending to its top is rotatably installed inside the installation frame. A flatness detector is fixedly installed at the top of the connection block. Locking studs penetrating to the outside of the installation frame and fitting with it are threadedly installed on the front and rear sides of the connection block respectively.

[0008] Preferably, the interior of the support base is hollow. A support pad is fixedly installed at the bottom of the support column. A placement groove is opened at the top of the workpiece placement table.

[0009] Preferably, a movable hole adapted to the protection door is opened on the left side of the inner wall of the protection frame. A push-pull handle located on the right side of the transparent viewing window is fixedly installed on the front side of the protection door.

[0010] Preferably, a bearing is fixedly installed between the column and the rotating sleeve. A rocker is fixedly installed on the front side of the control handwheel. An annular sliding groove is formed at the top of the guide ring. The number of sliding blocks is several and they are distributed equidistantly in a ring shape. The sliding blocks are in contact with the inner wall of the annular sliding groove.

[0011] Preferably, the transmission gear is a bevel gear. A through hole adapted to the threaded sleeve column is formed in the inner top wall of the support frame. A threaded groove adapted to the adjusting screw is formed inside the threaded sleeve column. A guide hole adapted to the adjusting screw and the guide post is formed inside the guide plate. The inner side wall of the guide hole is designed to be smooth.

[0012] Preferably, the mounting frame is designed in a U shape. A mounting sleeve is fixedly installed on the top of the connecting block. The flatness detector passes through the mounting sleeve and is threadedly installed by bolts. Arc-shaped strip holes adapted to the moving track of the locking stud are formed on both the front and rear sides of the inner wall of the mounting frame. A rotating block is fixedly installed at one end of the locking stud located outside the mounting frame. A limiting post fixedly connected to the rotating block and in contact with the outer side of the arc-shaped strip hole is fixedly installed on the outer side of the locking stud.

[0013] Compared with the prior art, the present invention provides a surface flatness detection device for the processing of precision metal shells of numerical control machine tools, having the following beneficial effects: 1. For the surface flatness detection device for the processing of precision metal shells of numerical control machine tools, through the combined use of the protective frame and the protective door, the flatness detection device is effectively protected during the detection process, and can effectively block external dust when the device is not in use, effectively improving the cleanliness of the metal shell during detection, and effectively improving the protection effect of the device.

[0014] 2. For the surface flatness detection device for the processing of precision metal shells of numerical control machine tools, by setting the control handwheel to drive the control worm to rotate, the control worm drives the rotating sleeve to rotate through the driving worm gear meshed with it, and the rotating sleeve drives the rotating plate to rotate, so that the support adjustment mechanism drives the detection mechanism to perform rotational detection, thereby comprehensively detecting the surface of the metal shell on the workpiece placement table. At the same time, the servo motor drives the transmission gear to rotate, and the two meshing transmission gears drive the adjusting screw to rotate. The adjusting screw drives the detection mechanism to perform height adjustment through the threaded sleeve column, so that the detection device can be appropriately adjusted according to the height dimension of the metal shell. The flatness detector is installed and connected to the mounting frame through the cooperation of the connecting block and the locking stud. When the user loosens the locking stud, the detection angle of the flatness detector can be appropriately adjusted. Through the design of this structure, it is effectively convenient for the user to adjust the flatness detection device, and there is no need for the operator to manually adjust the placement position of the metal shell, effectively improving the detection efficiency and adaptability of the device, and facilitating the use of the user. Brief Description of the Drawings

[0015] Figure 1 This is an overall three-dimensional schematic diagram of the structure of the surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools proposed by the present invention; Figure 2 This is a three-dimensional schematic diagram inside the protective frame of the structure of the surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools proposed by the present invention; Figure 3 This is a three-dimensional schematic diagram of the connection between the rotating assembly and the support adjustment mechanism of the structure of the surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools proposed by the present invention; Figure 4 This is a sectional three-dimensional schematic diagram inside the support base of the structure of the surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools proposed by the present invention; Figure 5 This is a three-dimensional schematic diagram of the rotating assembly of the structure of the surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools proposed by the present invention; Figure 6 This is a three-dimensional schematic diagram of the connection between the support adjustment mechanism and the detection mechanism of the structure of the surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools proposed by the present invention.

[0016] In the figure: 1, support base; 2, support column; 3, column; 4, workpiece placement table; 5, protection component; 51, protection frame; 52, mounting plate; 53, lighting work lamp; 54, protection door; 55, transparent window; 6, rotating assembly; 61, rotating sleeve; 62, driving worm gear; 63, control worm; 64, control handwheel; 65, guide ring; 66, rotating plate; 67, sliding block; 7, support adjustment mechanism; 71, support frame; 72, adjustment screw; 73, servo motor; 74, driving gear; 75, threaded sleeve column; 76, guide column; 77, guide plate; 8, detection mechanism; 81, mounting frame; 82, connecting block; 83, flatness detector; 84, locking stud. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-6, a surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools, including a support base 1. Support columns 2 are fixedly installed on both the left and right sides of the bottom of the support base 1. The inside of the support base 1 is hollow. A support pad is fixedly installed at the bottom of the support column 2, and the support pad can improve the support effect of the device. A column 3 penetrating to its top is fixedly installed on the inner bottom wall of the support base 1. A workpiece placement table 4 is fixedly installed at the top of the column 3. A placement groove is opened at the top of the workpiece placement table 4, and the placement groove facilitates the user to place the metal shell. A protection component 5 is fixedly installed on the top of the support base 1 and located outside the workpiece placement table 4. The protection component 5 includes a protection frame 51. A protection frame 51 is fixedly installed on the top of the support base 1 and located outside the workpiece placement table 4. An installation plate 52 extending into its interior is fixedly installed at the top of the protection frame 51. A lighting work lamp 53 penetrating to its bottom is fixedly installed at the top of the installation plate 52. The setting of the lighting work lamp 53 facilitates the lighting operation during the detection by the user. A protection door 54 penetrating into its interior and fitting with its inner top wall is movably installed on the left side of the protection frame 51. A movable hole adapted to the protection door 54 is opened on the left inner wall of the protection frame 51. A transparent viewing window 55 is opened inside the protection door 54. A push-pull handle is fixedly installed on the front side of the protection door 54 and located on the right side of the transparent viewing window 55. The setting of the transparent viewing window 55 allows the operator to observe the detection process without opening the protection door. The push-pull handle facilitates the user to control the push-pull of the protection door 54. It should be noted that the specific structure and working principle of the lighting work lamp 53 refer to the prior art. For this surface flatness detection device for the processing of precision metal shells of numerically controlled machine tools, through the combined use of the protection frame 51 and the protection door 54, the flatness detection device is effectively protected during the detection process, and can effectively block external dust when the device is not in use, effectively improving the cleanliness of the metal shell during detection and effectively improving the protection effect of the device.

[0019] A rotating assembly 6 is movably installed inside the support base 1 and extends to its outside and is sleeved on the outside of the column 3. The rotating assembly 6 includes a rotating sleeve 61. The rotating sleeve 61 is rotatably installed on the outside of the column 3 and penetrates through the inner top wall of the support base 1. A bearing is fixedly installed between the column 3 and the rotating sleeve 61. A driving worm gear 62 located inside the support base 1 is fixedly installed on the outside of the rotating sleeve 61. A control worm 63 that penetrates to the front side of the support base 1 and meshes with the driving worm gear 62 is rotatably installed on the rear side of the inner wall of the support base 1. A control handwheel 64 is fixedly installed on the front side of the control worm 63. A rocker is fixedly installed on the front side of the control handwheel 64. The rocker can facilitate the user to control the rotation of the control handwheel 64. A guide ring 65 located outside the rotating sleeve 61 is fixedly installed on the top of the support base 1. A rotating plate 66 that extends above the guide ring 65 is fixedly installed on the outside of the rotating sleeve 61. A sliding block 67 that extends into the guide ring 65 is fixedly installed on the bottom of the rotating plate 66. An annular chute is formed on the top of the guide ring 65. The number of sliding blocks 67 is several and they are distributed equidistantly in a ring shape. The sliding block 67 is in contact with the inner wall of the annular chute. The cooperation between the sliding block 67 and the annular chute can improve the stability of the rotating plate 66 during rotational movement. A support adjustment mechanism 7 located outside the workpiece placement table 4 is fixedly installed on the top of the rotating assembly 6. The support adjustment mechanism 7 includes a support frame 71. The support frame 71 is fixedly installed on the top of the rotating plate 66 and is located on the left side of the workpiece placement table 4. An adjustment screw 72 is rotatably installed on the inner bottom wall of the support frame 71. A servo motor 73 located on the right side of the support frame 71 is fixedly installed on the top of the rotating plate 66. Driving gears 74 are fixedly installed on the output shaft of the servo motor 73 and on the outside of the adjustment screw 72. The two driving gears 74 mesh with each other. The driving gears 74 are bevel gears. A threaded sleeve column 75 that extends to its top and penetrates through the top of the support frame 71 is threadedly installed on the outside of the adjustment screw 72. A through hole adapted to the threaded sleeve column 75 is formed on the inner top wall of the support frame 71. A threaded groove adapted to the adjustment screw 72 is formed inside the threaded sleeve column 75. Guide columns 76 located on the front and rear sides of the threaded sleeve column 75 are fixedly installed between the upper and lower sides of the inner wall of the support frame 71. A guide plate 77 that is sleeved on the outside of the adjustment screw 72 and the guide columns 76 and is in contact with the inner wall of the support frame 71 is fixedly connected to the bottom of the threaded sleeve column 75. A guide hole adapted to the adjustment screw 72 and the guide columns 76 is formed inside the guide plate 77. The inner wall of the guide hole is designed to be smooth. The cooperation between the guide column 76 and the guide hole can improve the stability of the threaded sleeve column 75 during movement. A detection mechanism 8 is fixedly installed on the top of the support adjustment mechanism 7. The detection mechanism 8 includes a mounting frame 81. The mounting frame 81 is fixedly installed on the top of the threaded sleeve column 75. The mounting frame 81 is designed in a U shape. A connecting block 82 that extends to its top is rotatably installed inside the mounting frame 81. A flatness detector 83 is fixedly installed on the top of the connecting block 82. A mounting sleeve is fixedly installed on the top of the connecting block 82. The flatness detector 83 penetrates through the mounting sleeve and is threadedly installed by bolts.Threaded mounting studs 84 that penetrate to the outside of the mounting frame 81 and are in contact with it are installed on both the front and rear sides of the connecting block 82. Arc-shaped strip holes adapted to the movement trajectories of the threaded mounting studs 84 are provided on both the front and rear inner walls of the mounting frame 81. A rotating block is fixedly installed at one end of the threaded mounting stud 84 located outside the mounting frame 81. A limiting post that is fixedly connected to the rotating block and is in contact with the outside of the arc-shaped strip hole is fixedly installed on the outside of the threaded mounting stud 84. The setting of the rotating block facilitates the user to control the rotation of the threaded mounting stud 84. Through the cooperative installation of the threaded mounting stud 84, the arc-shaped strip hole, the rotating block, and the limiting post, the flatness detector 83 can adjust the detection angle. It should be noted that for the specific structures and working principles of the servo motor 73 and the flatness detector 83, refer to the prior art. For this surface flatness detection device used for the processing of precision hardware shells of numerical control machine tools, by setting the control handwheel 64 to drive the control worm 63 to rotate, the control worm 63 drives the rotating sleeve 61 to rotate through the driving worm gear 62 meshing with it. The rotating sleeve 61 drives the rotating plate 66 to rotate, so that the support adjustment mechanism 7 drives the detection mechanism 8 to rotate and detect, thereby comprehensively detecting the surface of the hardware shell on the workpiece placement table 4. At the same time, the servo motor 73 drives the transmission gear 74 to rotate, and the two meshing transmission gears 74 drive the adjustment screw rod 72 to rotate. The adjustment screw rod 72 drives the detection mechanism 8 to adjust the height through the threaded sleeve column 75, so that the detection device can be appropriately adjusted according to the height dimension of the hardware shell. Moreover, the flatness detector 83 is installed and connected to the mounting frame 81 through the cooperation of the connecting block 82 and the threaded mounting studs 84. When the user loosens the threaded mounting studs 84, the detection angle of the flatness detector 83 can be appropriately adjusted. Through the design of this structure, it is effectively convenient for the user to adjust this flatness detection device, and there is no need for the operator to manually adjust the placement position of the hardware shell, effectively improving the detection efficiency and adaptability of the device.

[0020] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0021] In summary, for the surface flatness detection device used for processing the precision metal shell of a numerically controlled machine tool, by setting the cooperation of the protective frame 51 and the protective door 54, the flatness detection device is effectively protected during the detection process, and can effectively block external dust when the device is not in use, effectively improving the cleanliness of the metal shell during detection, and effectively improving the protection effect of the device. By setting the control handwheel 64 to drive the control worm 63 to rotate, the control worm 63 drives the rotating sleeve 61 to rotate through the driving worm gear 62 meshing with it, and the rotating sleeve 61 drives the rotating plate 66 to rotate, so that the support adjustment mechanism 7 drives the detection mechanism 8 to rotate and detect, thereby comprehensively detecting the surface of the metal shell on the workpiece placement table 4. At the same time, the servo motor 73 drives the transmission gear 74 to rotate, and the two meshing transmission gears 74 drive the adjustment screw 72 to rotate, and the adjustment screw 72 drives the detection mechanism 8 to adjust the height through the threaded sleeve column 75, so that the detection device can be appropriately adjusted according to the height dimension of the metal shell. Moreover, the flatness detector 83 is installed and connected to the mounting frame 81 through the cooperation of the connecting block 82 and the locking stud 84. When the user loosens the locking stud 84, the detection angle of the flatness detector 83 can be appropriately adjusted. Through the design of this structure, it is effectively convenient for the user to adjust the flatness detection device, and there is no need for the operator to manually adjust the placement position of the metal shell, effectively improving the detection efficiency and adaptability of the device, facilitating the user to use, and solving the problems raised in the above background technology.

[0022] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0023] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface flatness detection device for machining precision metal casings of CNC machine tools, comprising a support seat (1), characterized in that: The support seat (1) is provided with support columns (2) on both left and right sides of the bottom, the inner bottom wall of the support seat (1) is provided with a column (3) extending through the top thereof, a workpiece placement table (4) is provided on the top of the column (3), a protective component (5) located outside the workpiece placement table (4) is provided on the top of the support seat (1), a rotating component (6) extending to the outside of the support seat (1) and sleeved on the outside of the column (3) is provided inside the support seat (1), a support adjustment mechanism (7) located outside the workpiece placement table (4) is provided on the top of the rotating component (6), and a detection mechanism (8) is provided on the top of the support adjustment mechanism (7); The protection assembly (5) comprises a protection frame (51), the top of the support seat (1) is fixedly mounted with a protection frame (51) located outside the workpiece placement table (4), the top of the protection frame (51) is fixedly mounted with a mounting plate (52) extending into the interior thereof, the top of the mounting plate (52) is fixedly mounted with a lighting work lamp (53) penetrating through the bottom thereof, the left side of the protection frame (51) is movably mounted with a protection door (54) penetrating through the interior thereof and fitting with the inner top wall thereof, and a transparent window (55) is provided inside the protection door (54).

2. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 1 is characterized in that: The rotating assembly (6) comprises a rotating sleeve (61), the rotating sleeve (61) penetrating the inner top wall of the support seat (1) is rotatably mounted on the outer side of the column (3), the driving worm wheel (62) located inside the support seat (1) is fixedly mounted on the outer side of the rotating sleeve (61), the control worm (63) penetrating to the front side of the support seat (1) and meshing with the driving worm wheel (62) is rotatably mounted on the rear side of the inner wall of the support seat (1), the control hand wheel (64) is fixedly mounted on the front side of the control worm (63), the guide ring (65) located outside the rotating sleeve (61) is fixedly mounted on the top of the support seat (1), the rotating plate (66) extending above the guide ring (65) is fixedly mounted on the outer side of the rotating sleeve (61), and the sliding block (67) extending to the inside of the guide ring (65) is fixedly mounted on the bottom of the rotating plate (66).

3. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 2 is characterized in that: The support adjustment mechanism (7) comprises a support frame (71), the top of the rotating plate (66) is fixedly mounted with the support frame (71) located on the left side of the workpiece placement table (4), the inner bottom wall of the support frame (71) is rotatably mounted with an adjustment screw (72), the top of the rotating plate (66) is fixedly mounted with a servo motor (73) located on the right side of the support frame (71), the output shaft of the servo motor (73) and the outer side of the adjustment screw (72) are both fixedly mounted with a transmission gear (74), and the two The transmission gears (74) are meshed with each other, the outer thread of the adjusting screw (72) is threadedly mounted with a threaded sleeve column (75) extending to the top thereof and penetrating the top of the support frame (71), and guide columns (76) located at the front and rear sides of the threaded sleeve column (75) are fixedly mounted between the upper and lower sides of the inner wall of the support frame (71), and the bottom of the threaded sleeve column (75) is fixedly connected with a guide plate (77) which is sleeved on the outer sides of the adjusting screw (72) and the guide column (76) and is in contact with the inner wall of the support frame (71).

4. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 3 is characterized in that: The detection mechanism (8) comprises a mounting frame (81), the mounting frame (81) being fixedly mounted on the top of the threaded sleeve (75), a connecting block (82) extending to the top of the mounting frame (81) being rotatably mounted inside the mounting frame (81), a flatness detector (83) being fixedly mounted on the top of the connecting block (82), and locking studs (84) penetrating to the outside of the mounting frame (81) and fitting therewith being threadedly mounted on both the front and rear sides of the connecting block (82).

5. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 1 is characterized in that: The interior of the support seat (1) is hollow, a support pad is fixedly mounted on the bottom of the support column (2), and a placement groove is provided on the top of the workpiece placement platform (4).

6. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 1, characterized in that: A movable hole adapted to fit the protective door (54) is provided on the left side of the inner wall of the protective frame (51), and a push-pull handle located on the right side of the transparent window (55) is fixedly mounted on the front side of the protective door (54).

7. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 2 is characterized in that: A bearing is fixedly installed between the column (3) and the rotating sleeve (61), a rocker is fixedly installed on the front side of the control hand wheel (64), an annular groove is provided on the top of the guide ring (65), a plurality of sliding blocks (67) are distributed in an annular manner with equal distances, and the sliding blocks (67) are in contact with the inner wall of the annular groove.

8. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 3 is characterized in that: The transmission gear (74) is a bevel gear. The inner top wall of the support frame (71) is provided with a through hole matched with the threaded sleeve (75). The threaded sleeve (75) is provided with a threaded groove matched with the adjusting screw (72). The guide plate (77) is provided with a guide hole matched with the adjusting screw (72) and the guide pillar (76). The inner side wall of the guide hole is designed to be smooth.

9. The surface flatness detection device for machining precision hardware shells of CNC machine tools according to claim 4, characterized in that: The mounting frame (81) is of U-shaped design, a mounting sleeve is fixedly mounted on the top of the connecting block (82), the flatness detector (83) passes through the mounting sleeve and is installed by bolt threads, arc-shaped strip holes matching the moving trajectory of the locking stud (84) are opened on both the front and rear sides of the inner wall of the mounting frame (81), a rotating block is fixedly mounted on one end of the locking stud (84) located on the outside of the mounting frame (81), and a limiting column fixedly connected to the rotating block and fitting with the outside of the arc-shaped strip hole is fixedly mounted on the outside of the locking stud (84).

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