An indexing disc device based on rat tooth disc meshing

Abstract

This invention discloses an indexing plate device based on ratchet toothed disc engagement. The device includes an upper housing of a C-axis adjustment device, a lower housing of a C-axis adjustment device, a locking flange, a scale of a C-axis indexing adjustment device, a fixed ratchet toothed disc, a movable ratchet toothed disc, and a pull stud. This invention's indexing plate device, based on ratchet toothed disc engagement, adjusts the gap between the upper and lower housings and the axial pressure relative to the lathe input shaft by adjusting the clockwise and counterclockwise rotation of a nut mounted on the upper housing of the C-axis adjustment device. This achieves the engagement, disengagement, and tightening of the fixed and movable ratchet toothed discs. Furthermore, the fixed and movable ratchet toothed discs in this design can be replaced with different indexing discs, such as 1°, 2°, and 5°, according to factory needs. This invention connects the upper and lower housings of the C-axis indexing adjustment device via the scale of the C-axis indexing adjustment device, eliminating unnecessary parts and resulting in a more uniform tensile stress distribution between the upper and lower housings, increasing the reliability of the universal milling head.

Description

Technical fields:

[0001] This invention belongs to the field of machine tool technology, specifically relating to an indexing plate device based on rat tooth disc meshing. Background technology:

[0002] With the reform and development of national industrialization, CNC machine tools, as key equipment for complex surface processing, are increasingly used in aerospace, automotive, and mold-making fields. As a core component of CNC machine tools, the structure and performance of the universal side milling head largely determine the machine tool's performance. Based on existing literature, to achieve more precise indexing, the adjustment of the A / C axis angle of current milling heads mainly relies on manual operation. Generally, a ratchet sprocket is used on the A / C axis housing to achieve precise indexing and radial locking. Therefore, how to simplify the structure of the device while ensuring precise C-axis indexing, thereby reducing production costs and assembly difficulty, is one of the current challenges in indexing device design.

[0003] The structure where the milling head spindle and the lathe output shaft are on the same axis has better machining properties than the spindle offset design. This is mainly reflected in the fact that the former has a more compact structure and will not excessively compress the lathe machining space. At the same time, the coaxial structure of the spindle and the output shaft can make the center of gravity of the milling head more stable, reduce vibration, improve machining accuracy and the service life of the milling head.

[0004] Currently, although many patents have researched indexing adjustment devices for universal milling heads, these universal milling heads are mostly used in five-axis gantry milling machines. Their indexing mechanical structures are relatively complex, resulting in high manufacturing costs. For example, the C-axis rotation device disclosed in Chinese invention patent CN 102632419 A, "Double Indexing CNC Universal Milling Head," suffers from complex indexing structures that lead to complicated assembly, high production costs, and excessively large C-axis cylinder volumes. Another example is the C-axis rotation device disclosed in Chinese invention patent CN 112276191 A, "A Milling Head with Cooperative Positioning of Indexing Plate and Rotating Gear Plate," which uses two sets of ratchet plates to perform C-axis indexing on the rotating block and the milling head respectively. This design, with two sets of ratchet plates, is complex and increases the difficulty of adjustment. Some domestic milling machines cannot use the complex CNC adjustable universal milling heads available on the market. Summary of the Invention:

[0005] The purpose of this invention is to solve the aforementioned problems and provide an indexing plate device based on a ratchet disc meshing method, allowing manual adjustment of the C-axis indexing. This invention provides an indexing plate device based on ratchet disc meshing, where the housing clearance can be adjusted by rotating a nut to complete the meshing, disengagement, and tightening actions of the ratchet disc, thereby achieving the indexing adjustment function. This invention possesses multiple advantages such as simple structure, convenient adjustment, high indexing control accuracy, and low cost, solving the design difficulties of complex structures in current indexing devices, while simultaneously improving the overall machining efficiency of cutting operations.

[0006] The technical solution of the present invention is as follows:

[0007] An indexing plate device based on rat tooth disc meshing, the indexing plate device includes an upper housing 1 of the C-axis adjustment device, a lower housing 2 of the C-axis adjustment device, a locking flange 4, a scale of the C-axis indexing adjustment device 5, a fixed rat tooth disc 6, a movable rat tooth disc 7, a clamping bolt 10 for the C-axis indexing adjustment scale, and a pull stud 11.

[0008] The upper housing 1 of the C-axis indexing adjustment device is fixed above the lower housing 2 of the C-axis adjustment device; the upper housing 1 of the C-axis indexing adjustment device includes an upper shell 101 and a lower shell 102 of the upper housing arranged from top to bottom.

[0009] The locking flange 4 is located directly above the flange structure of the upper housing 101 of the C-axis indexing adjustment device, and is centeredly connected to the upper housing 101 of the C-axis indexing adjustment device; a number of pull studs 11 are evenly fixed on the upper surface of the locking flange 4. During device installation, the pull studs 11 will be inserted into the machine tool, thereby achieving circumferential fixation between the housing and the C-axis input axis through the pull studs 11.

[0010] The C-axis indexing adjustment device dial 5 is arranged above the upper edge flange structure of the lower housing 2 of the C-axis adjustment device. The lower housing 102 of the upper housing of the C-axis indexing adjustment device extends out from the bottom opening of the dial 5 of the C-axis indexing adjustment device. The lower edge flange structure of the dial 5 of the C-axis indexing adjustment device is centered and fixedly connected to the upper edge flange structure of the lower housing 2 of the C-axis indexing adjustment device.

[0011] The fixed toothed plate 6 and the movable toothed plate 7 are located below the lower housing 102 of the upper box of the C-axis indexing adjustment device and between the upper edge flange structure of the lower housing 2 of the C-axis adjustment device. The fixed toothed plate 6 is directly above the movable toothed plate 7. The fixed toothed plate 6 is fixedly connected to the lower housing 102 of the upper box of the C-axis indexing adjustment device, and the movable toothed plate 7 is fixedly connected to the upper edge flange structure of the lower housing 2 of the C-axis indexing adjustment device.

[0012] Several C-axis indexing adjustment dial clamping bolts 10 are evenly installed at the bottom of the dial 5 of the C-axis indexing adjustment device. The bottom of the bolts is embedded in the lower stepped flange structure 1023 of the lower edge of the lower housing. By rotating the C-axis indexing adjustment dial clamping bolts 10 clockwise and counterclockwise, the gap between the lower surface of the lower housing 102 of the upper box of the C-axis indexing adjustment device and the upper surface of the lower box 2 of the C-axis indexing adjustment device is adjusted, thereby achieving the purpose of controlling the engagement and disengagement of the fixed rat tooth plate 6 and the movable rat tooth plate 7.

[0013] Furthermore, the main body of the lower housing 102 of the upper box of the C-axis indexing adjustment device is a cylindrical structure. The upper edge of the cylinder is provided with an upper edge flange structure 1021, and the lower edge of the cylindrical structure is provided with a stepped flange structure. The stepped flange structure is composed of a lower stepped flange structure 1022 and an upper stepped flange structure 1023. The lower stepped flange structure 1023 is located below the upper stepped flange structure 1022. The upper surface of the lower stepped flange structure 1023 is milled with a groove, which serves as a radial positioning function for the C-axis indexing adjustment dial clamping bolt 10.

[0014] Furthermore, several reinforcing ribs are evenly provided between the upper edge flange structure 1021 of the lower shell and the upper step flange structure 1022 of the lower edge of the lower shell.

[0015] Furthermore, the upper housing 101 of the C-axis indexing adjustment device is a cylindrical structure with a flanged edge on the upper edge. An opening is designed at the center of the bottom of the cylindrical structure, and an annular boss coaxial with the opening is provided on the lower surface of the bottom of the cylindrical structure.

[0016] Furthermore, the flange structure on the upper edge of the upper housing 101 of the C-axis indexing adjustment device and the outer side of the barrel wall of the cylindrical structure are fixedly connected to several uniformly arranged reinforcing ribs. Several reinforcing ribs are uniformly arranged on the upper surface of the bottom of the barrel of the upper housing 101 of the C-axis indexing adjustment device, and the reinforcing ribs are fixedly connected to the inner wall of the cylindrical structure.

[0017] Furthermore, the lower housing 2 of the C-axis adjustment device is an inverted cylindrical structure with a bottom opening, and the upper and lower edges of the inverted cylindrical structure are respectively provided with outwardly extending flange structures.

[0018] Furthermore, six reinforcing ribs are evenly provided between the flange structures of the upper and lower edges of the lower housing 2 of the C-axis adjustment device, the purpose of which is to enhance the structural strength of the component.

[0019] Furthermore, the C-axis indexing adjustment device dial 5 is an inverted cylindrical structure with a central hole at the bottom. The lower edge of the inverted cylindrical structure is provided with an outwardly extending flange structure. The lower housing 102 of the upper box of the C-axis indexing adjustment device extends out from the bottom hole of the dial 5. The flange structure of the lower edge of the dial 5 is fixedly connected to the flange structure of the upper edge of the lower box 2 of the C-axis indexing adjustment device. The lower flange structure 1023 of the lower edge of the lower housing is located between the bottom plane of the dial 5 and the flange structure of the upper edge of the lower box 2.

[0020] Furthermore, the fixed rat tooth plate 6 is centered and fixedly connected to the lower edge flange structure 1023 of the lower housing, and the movable rat tooth plate 7 is centered and fixedly connected to the upper edge flange structure of the lower housing 2 of the C-axis indexing adjustment device.

[0021] Furthermore, the fixed toothed disc 6 and the movable toothed disc 7 are the same size, and the inner diameter of the toothed disc is the same as the inner diameter of the lower step flange structure 1023 on the lower edge of the lower shell.

[0022] The beneficial effects of this invention are:

[0023] This invention utilizes a ratchet toothed disc meshing indexing plate device. By adjusting the clockwise and counterclockwise rotation of the clamping bolt on the C-axis indexing adjustment dial mounted on the upper housing, the gap between the upper and lower housings is adjusted, thereby completing the engagement, disengagement, and tightening actions of the fixed and movable ratchet toothed discs. Furthermore, the fixed and movable ratchet toothed discs in this design can be replaced with different indexed discs, such as 1°, 2°, and 5°, according to factory needs. This invention connects the upper and lower housings of the C-axis indexing adjustment device via the C-axis indexing adjustment device dial, eliminating unnecessary parts and resulting in a more uniform tensile stress distribution between the upper and lower housings, increasing the reliability of the universal milling head.

[0024] Furthermore, the engagement and disengagement strokes of the upper and lower ratchet teeth in this invention are controlled by a clamping bolt located on the scale of the C-axis indexing adjustment device. This design is simple in structure, easy to operate, and highly reliable, effectively completing the engagement, disengagement, and tightening actions of the ratchet teeth in the universal milling head, thus improving the overall machining efficiency of the cutting operation. The movable and fixed ratchet teeth of this invention are replaceable and detachable, allowing manufacturers to select the indexing scale according to their own precision requirements. Attached image description:

[0025] Figure 1 This is a schematic diagram of the indexing disc device based on rat tooth disc meshing in this embodiment;

[0026] Figure 2 This is a three-dimensional schematic diagram of the indexing disc device based on rat tooth disc meshing in this embodiment;

[0027] Figure 3 This is a schematic diagram of the meshing state of the rat tooth disc in this invention;

[0028] Figure 4 This is a schematic diagram of the detached state of the rat tooth disc of the present invention.

[0029] In the diagram: 1. Upper housing of C-axis adjustment device; 101. Upper shell; 102. Lower shell; 1021. Upper panel; 1022. Lower panel; 2. Lower housing of C-axis adjustment device; 3. External hexagonal fastening bolt; 4. Locking flange; 5. C-axis indexing adjustment device dial; 6. Fixed ratchet plate; 7. Moving ratchet plate; 8. Fixed ratchet plate fastening screw; 9. Moving ratchet plate fastening screw; 10. C-axis indexing adjustment dial clamping bolt; 11. Pull stud; 12. C-axis indexing adjustment dial fastening bolt. Detailed implementation method:

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Define the direction perpendicular to the paper and outward as front, the direction perpendicular to the paper and inward as back, the direction parallel to the paper and to the left as left, the direction parallel to the paper and to the right as right, the direction parallel to the paper and upward as up, and the direction parallel to the paper and downward as down.

[0032] like Figure 1 As shown, the indexing plate device based on rat tooth plate meshing of the present invention includes an upper housing 1 of the C-axis adjustment device, a lower housing 2 of the C-axis adjustment device, an external hexagonal fastening bolt 3, a locking flange 4, a C-axis indexing adjustment device dial 5, a fixed rat tooth plate 6, a movable rat tooth plate 7, a fixed rat tooth plate fastening screw 8, a movable rat tooth plate fastening screw 9, a C-axis indexing adjustment dial clamping bolt 10, a pull stud 11, and a C-axis indexing adjustment dial fastening bolt 12.

[0033] like Figure 2 As shown, the upper housing 1 of the C-axis indexing adjustment device includes an upper housing 101 and a lower housing 102 arranged from top to bottom. The lower housing 102 is mainly cylindrical. The upper edge of the cylinder is provided with an upper edge flange structure 1021, and the lower edge of the cylinder is provided with a stepped flange structure. The stepped flange structure is composed of an upper stepped flange structure 1022 and a lower stepped flange structure 1023. The lower stepped flange structure 1023 is located below the upper stepped flange structure 1022. The upper surface of the lower stepped flange structure 1023 is milled with a groove, which serves to radially position the C-axis indexing adjustment dial clamping bolt 10.

[0034] Six reinforcing ribs are evenly provided between the upper edge flange structure 1021 and the lower edge upper flange structure 1022 of the lower housing. The purpose is to enhance the structural strength of the lower housing 102 of the upper box of the C-axis indexing adjustment device.

[0035] The upper housing 101 of the C-axis indexing adjustment device is a cylindrical structure with a flanged edge on the upper edge. The flanged edge of the upper housing 101, the outer wall of the cylindrical structure, and six evenly arranged reinforcing ribs are fixedly connected. Six reinforcing ribs are evenly arranged on the upper surface of the bottom of the upper housing 101, and these ribs are fixedly connected to the inner wall of the cylindrical structure. The purpose of these reinforcing ribs is to enhance the structural strength of the device. An opening is designed at the center of the bottom of the cylindrical structure, and an annular boss coaxial with the opening is provided on the lower surface of the bottom of the cylindrical structure. The inner diameter of the annular boss is slightly larger than the inner diameter of the opening at the center of the bottom of the cylindrical structure.

[0036] The locking flange 4 is located directly above the flanged structure of the upper housing 101 of the C-axis indexing adjustment device, and is centered and connected to the upper housing 101 of the C-axis indexing adjustment device by external hexagonal bolts. Several pull studs 11 are evenly fixed on the upper surface of the locking flange 4. During device installation, the pull studs 11 are inserted into the machine tool, thereby circumferentially fixing the housing to the C-axis input shaft axis. The upper housing 101 of the C-axis indexing adjustment device is positioned directly above the flanged structure 1021 on the upper edge of the lower housing. The annular boss on the lower surface of the cylindrical structure is located inside the cylindrical structure. The bottom of the upper housing 101 of the C-axis indexing adjustment device is centered and fixed to the flanged structure 1021 on the upper edge of the lower housing by six external hexagonal bolts.

[0037] The lower housing 2 of the C-axis adjustment device is an inverted cylindrical structure with a bottom opening. The upper and lower edges of the inverted cylindrical structure are respectively provided with outwardly extending flange structures, and six reinforcing ribs are evenly provided between the flange structures of the upper and lower edges to enhance the structural strength of the component.

[0038] The C-axis indexing adjustment device dial 5 is an inverted cylindrical structure with a central opening at the bottom. The lower edge of the inverted cylindrical structure has an outwardly extending flange. The C-axis indexing adjustment device dial 5 is positioned above the flange on the upper edge of the lower housing 2 of the C-axis adjustment device. The lower housing 102 of the upper housing of the C-axis indexing adjustment device extends from the bottom opening of the dial 5. The flange on the lower edge of the dial 5 is fixedly connected to the upper flange on the lower housing 2 of the C-axis indexing adjustment device via six C-axis indexing adjustment dial fastening bolts 12 for centering and fixation.

[0039] The lower edge flange structure 1023 of the lower housing is located between the bottom plane of the dial 5 of the C-axis indexing adjustment device and the upper edge flange structure of the lower housing 2 of the C-axis indexing adjustment device. The lower edge flange structure 1023 of the lower housing can be limited by locking the dial 5 of the C-axis indexing adjustment device and the lower housing 2 of the C-axis indexing adjustment device.

[0040] The fixed toothed sprocket 6 and the movable toothed sprocket 7 are positioned between the lower surface of the lower edge flange structure 1023 of the lower housing and the upper edge flange structure of the lower housing 2 of the C-axis adjustment device, with the fixed toothed sprocket 6 directly above the movable toothed sprocket 7. The fixed toothed sprocket 6 and the movable toothed sprocket 7 are commercially available components. They are identical in size, and their inner diameters must match the inner diameter of the lower edge flange structure 1023 of the lower housing. The fixed toothed sprocket 6 is fixedly centered to the lower edge flange structure 1023 of the lower housing using ten fixed toothed sprocket fastening screws 8, and the movable toothed sprocket 7 is fixedly centered to the upper edge flange structure of the lower housing 2 of the C-axis indexing adjustment device using ten movable toothed sprocket fastening screws 9.

[0041] The C-axis indexing adjustment dial clamping bolt 10 is installed at the bottom of the dial 5 of the C-axis indexing adjustment device. The bottom of the bolt is embedded in the groove on the upper surface of the lower stepped flange structure 1023 of the lower edge of the lower housing. The C-axis indexing adjustment dial clamping bolt 10 adjusts the gap between the upper stepped flange structure 1022 of the lower edge of the lower housing 102 of the upper housing of the C-axis indexing adjustment device and the upper surface of the lower housing 2 of the C-axis indexing adjustment device by rotating clockwise and counterclockwise, thereby controlling the engagement and disengagement of the fixed ratchet plate 6 and the movable ratchet plate 7. The engagement state of the fixed ratchet plate 6 and the movable ratchet plate 7 is as follows. Figure 3 As shown, the fixed mouse tooth plate 6 and the movable mouse tooth plate 7 are in the disengaged state as follows: Figure 4 As shown.

[0042] In summary, this invention discloses an indexing plate device based on a ratchet toothed disc engagement. By adjusting the clockwise and counterclockwise rotation of the clamping bolt of the C-axis indexing adjustment dial mounted on the upper housing, the gap between the upper and lower housings is adjusted, achieving the engagement, disengagement, and tightening actions of the fixed and movable ratchet toothed discs. Furthermore, the fixed and movable ratchet toothed discs in this design can be replaced with different indexing discs, such as 1°, 2°, and 5°, according to factory needs. Manufacturers can select the indexing disc according to their own precision requirements, achieving a simple, convenient, and highly reliable indexing plate design. This invention connects the upper and lower housings of the C-axis indexing adjustment device via the dial of the C-axis indexing adjustment device, eliminating unnecessary parts and making the tensile stress distribution between the upper and lower housings more uniform, increasing the reliability of the universal milling head.

Claims

1. An indexing disc device based on rat tooth disc meshing, characterized in that, The indexing device includes an upper housing (1) of the C-axis indexing adjustment device, a lower housing (2) of the C-axis indexing adjustment device, a locking flange (4), a scale of the C-axis indexing adjustment device (5), a fixed ratchet plate (6), a movable ratchet plate (7), a C-axis indexing adjustment scale clamping bolt (10), and a pull stud (11). The upper housing (1) of the C-axis indexing adjustment device is fixed above the lower housing (2) of the C-axis indexing adjustment device; the upper housing (1) of the C-axis indexing adjustment device includes an upper shell (101) and a lower shell (102) of the C-axis indexing adjustment device arranged from top to bottom. The locking flange (4) is located directly above the flange structure of the upper housing (101) of the C-axis indexing adjustment device, and is centeredly connected to the upper housing (101) of the C-axis indexing adjustment device; a number of pull studs (11) are evenly fixed on the upper surface of the locking flange (4). When the device is installed, the pull studs (11) will be inserted into the machine tool, thereby achieving circumferential fixation between the housing and the C-axis input shaft axis through the pull studs (11); The C-axis indexing adjustment device dial (5) is arranged above the upper edge flange structure of the lower box (2) of the C-axis indexing adjustment device. The lower housing (102) of the upper box of the C-axis indexing adjustment device extends out from the bottom opening of the dial (5) of the C-axis indexing adjustment device. The lower edge flange structure of the dial (5) of the C-axis indexing adjustment device is fixedly connected to the upper edge flange structure of the lower box (2) of the C-axis indexing adjustment device below. The fixed rat tooth plate (6) and the movable rat tooth plate (7) are located below the lower housing (102) of the upper box of the C-axis indexing adjustment device and between the upper edge flange structure of the lower housing (2) of the C-axis indexing adjustment device. The fixed rat tooth plate (6) is directly above the movable rat tooth plate (7). The fixed rat tooth plate (6) is fixedly connected to the lower housing (102) of the upper box of the C-axis indexing adjustment device, and the movable rat tooth plate (7) is fixedly connected to the upper edge flange structure of the lower housing (2) of the C-axis indexing adjustment device. Several C-axis indexing adjustment dial clamping bolts (10) are evenly installed at the bottom of the dial (5) of the C-axis indexing adjustment device. The bottom of the bolts is embedded in the lower edge of the lower housing and the lower step flange structure (1023). By rotating the C-axis indexing adjustment dial clamping bolts (10) clockwise and counterclockwise, the gap between the lower surface of the lower housing (102) of the upper box of the C-axis indexing adjustment device and the upper surface of the lower box (2) of the C-axis indexing adjustment device is adjusted, thereby achieving the purpose of controlling the engagement and disengagement of the fixed rat tooth plate (6) and the moving rat tooth plate (7). The main body of the lower housing (102) of the upper box of the C-axis indexing adjustment device is a cylindrical structure. The upper edge of the cylinder is provided with an upper edge flange structure (1021) of the lower housing. The lower edge of the cylindrical structure is provided with a stepped flange structure. The stepped flange structure is composed of a lower edge flange structure (1022) of the lower housing and an upper edge flange structure (1023) of the lower housing. The lower edge flange structure (1023) of the lower housing is located below the upper edge flange structure (1022) of the lower housing. The upper surface of the lower edge flange structure (1023) of the lower housing is milled with a groove, which serves as a radial positioning function for the C-axis indexing adjustment dial clamping bolt (10). The upper housing (101) of the C-axis indexing adjustment device is a cylindrical structure with a flanged edge on the upper edge. An opening is designed at the center of the bottom of the cylindrical structure, and an annular boss coaxial with the opening is provided on the lower surface of the bottom of the cylindrical structure.

2. The indexing disc device based on rat tooth disc meshing according to claim 1, characterized in that: Several reinforcing ribs are evenly provided between the upper edge flange structure (1021) of the lower shell and the upper step flange structure (1022) of the lower edge of the lower shell.

3. The indexing disc device based on rat tooth disc meshing according to claim 1, characterized in that: The flange structure on the upper edge of the upper shell (101) of the C-axis indexing adjustment device, the outer side of the barrel wall of the cylindrical structure, and several uniformly arranged reinforcing ribs are fixedly connected. Several reinforcing ribs are uniformly arranged on the upper surface of the bottom of the barrel of the upper shell (101) of the C-axis indexing adjustment device, and the reinforcing ribs are fixedly connected to the inner wall of the cylindrical structure.

4. The indexing disc device based on rat tooth disc meshing according to claim 1, characterized in that: The lower housing (2) of the C-axis indexing adjustment device is an inverted cylindrical structure with a bottom opening. The upper and lower edges of the inverted cylindrical structure are respectively provided with outwardly extending flange structures.

5. The indexing disc device based on rat tooth disc meshing according to claim 4, characterized in that: The upper and lower edges of the lower housing (2) of the C-axis indexing adjustment device are uniformly provided with 6 reinforcing ribs to enhance the structural strength of the component.

6. The indexing disc device based on rat tooth disc meshing according to claim 1, characterized in that: The C-axis indexing adjustment device dial (5) is an inverted cylindrical structure with a central hole at the bottom. The lower edge of the inverted cylindrical structure has an outwardly extending flange structure. The lower housing (102) of the upper box of the C-axis indexing adjustment device extends out from the bottom hole of the dial (5). The flange structure of the lower edge of the dial (5) of the C-axis indexing adjustment device is fixedly connected to the flange structure of the upper edge of the lower box (2) of the C-axis indexing adjustment device. The lower edge flange structure (1023) of the lower housing is located between the bottom plane of the dial (5) of the C-axis indexing adjustment device and the flange structure of the upper edge of the lower box (2) of the C-axis indexing adjustment device.

7. The indexing disc device based on rat tooth disc meshing according to claim 1, characterized in that: The fixed rat tooth plate (6) is fixedly connected to the lower edge flange structure (1023) of the lower shell, and the movable rat tooth plate (7) is fixedly connected to the upper edge flange structure of the lower box (2) of the C-axis indexing adjustment device.

8. The indexing disc device based on rat tooth disc meshing according to claim 7, characterized in that: The fixed toothed disc (6) and the movable toothed disc (7) are the same size, and the inner diameter of the toothed disc is the same as the inner diameter of the lower edge flange structure (1023) of the lower shell.

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