Positioning machining method of inner arc segmented driving rack

Abstract

The present application relates to a kind of positioning processing methods of inner arc subsection driving rack, including first positioning mechanism, second positioning mechanism and positioning processing base, first positioning mechanism is located in the upper of second positioning mechanism, first positioning mechanism and second positioning mechanism are all installed on positioning processing base, first positioning mechanism includes first left positioning component, first middle positioning component and first right positioning component, first left positioning component and first right positioning component are respectively arranged in the left and right of first middle positioning component, first left positioning component, first middle positioning component and first right positioning component are all set on positioning processing base, second positioning mechanism includes second left positioning component, second middle positioning component and second right positioning component, second left positioning component and second right positioning component are respectively arranged in the left and right of second middle positioning component, second left positioning component, second middle positioning component and second right positioning component are all set on positioning processing base.

Description

Technical Field

[0001] This invention relates to a positioning and machining method for an internal arc segmented drive rack, which is mainly applied in the field of engineering machinery, such as the reducer of a heavy excavator. Background Technology

[0002] The internal arc segmented drive rack is mainly used in the reducer of excavators. When milling and drilling it, it needs to be positioned and fixed. Due to the difficulty of clamping, it requires highly skilled operators. The clamping process is too complicated and requires multiple steps to complete. The machining cycle of the internal arc segmented drive rack is long. During the machining process, it is often necessary to stop to release the cutting clamping stress, which requires manual intervention. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings in the prior art and to provide a positioning and machining method for an inner arc segmented drive rack with a reasonable structural design.

[0004] The technical solution adopted by the present invention to solve the above problems is: a positioning and machining method for an inner arc segmented drive rack. This method is implemented using a positioning and machining device for the inner arc segmented drive rack. The device includes a first positioning mechanism, a second positioning mechanism, and a positioning and machining base. The first positioning mechanism is located above the second positioning mechanism, and both the first and second positioning mechanisms are mounted on the positioning and machining base. Its structural features are as follows: The first positioning mechanism includes a first left positioning component, a first middle positioning component, and a first right positioning component. The first left positioning component and the first right positioning component are respectively disposed on the left and right sides of the first middle positioning component. The first left positioning component, the first middle positioning component, and the first right positioning component are all disposed on the positioning processing base. The second positioning mechanism includes a second left positioning component, a second middle positioning component, and a second right positioning component. The second left positioning component and the second right positioning component are respectively disposed on the left and right sides of the second middle positioning component. The second left positioning component, the second middle positioning component, and the second right positioning component are all disposed on the positioning processing base. The first left positioning component, the first middle positioning component, and the first right positioning component are respectively located above the second left positioning component, the second middle positioning component, and the second right positioning component.

[0005] The positioning and machining method of the inner arc segmented drive rack is as follows: the rack is placed on the first positioning mechanism or the second positioning mechanism.

[0006] When the rack is placed on the first positioning mechanism, the lower end face of the rack contacts the first left positioning moving steel ball, the first right positioning moving steel ball, the vertical sliding block, and the first positioning support rod, and the two ends of the rack contact the second left positioning pad screw and the second right positioning pad screw. Tightening the first positioning screw makes the first positioning pressure plate contact the upper end face of the rack. Tightening the vertical tension bolt and the horizontal tension bolt respectively makes the vertical sliding block and the horizontal sliding block move upward and to the right respectively. At this time, the rack can be processed. Loosening the vertical tension bolt and the horizontal tension bolt allows the vertical tension block and the horizontal tension block to be reset under the action of the vertical return spring and the horizontal return spring respectively.

[0007] When the rack is placed on the second positioning mechanism, the lower end face of the rack contacts the second left positioning pad, the second left positioning level block, the second left positioning pin, the second middle positioning pad, the second middle positioning level block, the second right positioning pad, the second right positioning level block, and the second right positioning pin. The second left positioning pad screw, the second middle positioning pad screw, and the second right positioning pad screw are then inserted into the tooth groove of the rack and tightened. The second left positioning level block screw, the second middle positioning level block screw, and the second right positioning level block screw pass through the rack and correspondingly through the second left positioning level block, the second middle positioning level block, and the second right positioning level block. Finally, the second left positioning level block screw, the second middle positioning level block screw, and the second right positioning level block screw are tightened. Tightening the second positioning screw causes the second positioning pressure plate to contact the reverse side of the rack. At this point, the rack can be machined.

[0008] Furthermore, the first left positioning component includes a first left positioning base plate, a first left positioning clamping structure, a first left positioning pressing structure, a first left positioning directional column, a first left positioning moving steel ball, and a first left positioning lifting ring. The first left positioning base plate is disposed on the positioning processing base, and the first left positioning clamping structure, the first left positioning pressing structure, the first left positioning directional column, the first left positioning moving steel ball, and the first left positioning lifting ring are all disposed on the first left positioning base plate.

[0009] Furthermore, the first positioning component includes a first positioning base plate, a first positioning clamping structure, a first positioning pressing structure, and a first positioning lifting ring. The first positioning base plate is disposed on the positioning processing base, and the first positioning clamping structure, the first positioning pressing structure, and the first positioning lifting ring are all disposed on the first positioning base plate.

[0010] Furthermore, the first right positioning component includes a first right positioning base plate, a first right positioning clamping structure, a first right positioning pressing structure, a first right positioning directional column, a first right positioning moving steel ball, and a first right positioning lifting ring. The first right positioning base plate is disposed on the positioning processing base, and the first right positioning clamping structure, the first right positioning pressing structure, the first right positioning directional column, the first right positioning moving steel ball, and the first right positioning lifting ring are all disposed on the first right positioning base plate.

[0011] Furthermore, the second left positioning component includes a second left positioning base plate, a second left positioning pad, a second left positioning level block, a second left positioning pad screw, a second left positioning level block screw, a second left positioning clamping structure, a second left positioning lifting ring, and a second left positioning diamond pin. The second left positioning base plate is mounted on the positioning processing base. The second left positioning pad, the second left positioning level block, the second left positioning pad screw, the second left positioning level block screw, the second left positioning clamping structure, the second left positioning lifting ring, and the second left positioning diamond pin are all mounted on the second left positioning base plate. The second left positioning pad screw cooperates with the second left positioning pad, and the second left positioning level block screw penetrates the second left positioning level block.

[0012] Furthermore, the second positioning component includes a second positioning base plate, a second positioning pad, a second positioning level block, a second positioning pad screw, a second positioning level block screw, a second positioning clamping structure, and a second positioning lifting ring. The second positioning base plate is mounted on the positioning processing base. The second positioning pad, the second positioning level block, the second positioning pad screw, the second positioning level block screw, the second positioning clamping structure, and the second positioning lifting ring are all mounted on the second positioning base plate. The second positioning pad screw cooperates with the second positioning pad, and the second positioning level block screw penetrates through the second positioning level block.

[0013] Furthermore, the second right positioning component includes a second right positioning base plate, a second right positioning pad, a second right positioning level block, a second right positioning pad screw, a second right positioning level block screw, a second right positioning clamping structure, a second right positioning lifting ring, and a second right positioning diamond pin. The second right positioning base plate is mounted on the positioning processing base. The second right positioning pad, the second right positioning level block, the second right positioning pad screw, the second right positioning level block screw, the second right positioning clamping structure, the second right positioning lifting ring, and the second right positioning diamond pin are all mounted on the second right positioning base plate. The second right positioning pad screw cooperates with the second right positioning pad, and the second right positioning level block screw penetrates through the second right positioning level block.

[0014] Furthermore, the first left positioning clamping structure, the first middle positioning clamping structure, and the first right positioning clamping structure each include a positioning clamp, a vertical fixing block, a vertical tensioning block, a vertical sliding block, a vertical return spring, a vertical tensioning bolt, a horizontal fixing block, a horizontal tensioning block, a horizontal sliding block, and a horizontal return spring. The vertical fixing block and the horizontal fixing block are both fixed on the positioning clamp. The vertical tensioning block and the horizontal tensioning block are slidably disposed on the vertical fixing block and the horizontal fixing block, respectively. The vertical sliding block and the horizontal sliding block are slidably disposed on the vertical tensioning block and the horizontal tensioning block, respectively. The vertical return spring and the horizontal return spring abut against the vertical tensioning block and the horizontal tensioning block, respectively. The vertical tensioning block and the horizontal tensioning block are controlled by the vertical tensioning bolt and the horizontal tensioning bolt, respectively.

[0015] Furthermore, the first left positioning and clamping structure, the first middle positioning and clamping structure, and the first right positioning and clamping structure each include a first positioning guide rod, a first positioning pressure plate, a first positioning support rod, and a first positioning screw. The first positioning guide rod and the first positioning screw both penetrate through the first positioning pressure plate, and the first positioning pressure plate is located above the first positioning support rod.

[0016] Furthermore, the second left positioning clamping structure, the second middle positioning clamping structure, and the second right positioning clamping structure all include a second positioning screw, a second positioning pressure plate, and a second positioning guide rod, with the second positioning screw and the second positioning guide rod both penetrating through the second positioning pressure plate.

[0017] Compared with the prior art, the present invention has the following advantages: The positioning and machining method of the segmented drive rack with inner arc adopts a three-point plane fixing method, and the bottom support of the rack is entirely flexible. When fixing the rack, the contact surface between the machining device and the rack can be reduced. All force points are changed to elastic support devices, and the cutting and clamping stress is released automatically during the machining process without manual intervention. The first left positioning and clamping structure, the first middle positioning and clamping structure, and the first right positioning and clamping structure adopt elastic support. The vertical return spring and the horizontal return spring can effectively absorb the vibration generated during the machining process, which greatly improves the tool life and reduces costs. The clamping is simple. Clamping can be completed by placing, pressing and pressing. There is no need to release the cutting and clamping stress during the machining process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the positioning and machining method of the segmented drive rack with inner arc according to an embodiment of the present invention.

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the positioning and machining method of the segmented drive rack with inner arc according to an embodiment of the present invention.

[0020] Figure 3This is a schematic diagram of the usage state of the positioning and machining method of the segmented drive rack with inner arc according to an embodiment of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the first left positioning clamping structure, the first middle positioning clamping structure, and the first right positioning clamping structure according to an embodiment of the present invention.

[0022] Figure 5 This is a cross-sectional schematic diagram of the first left positioning clamping structure, the first middle positioning clamping structure, and the first right positioning clamping structure according to an embodiment of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the first left positioning and pressing structure, the first middle positioning and pressing structure, and the first right positioning and pressing structure according to an embodiment of the present invention.

[0024] Figure 7 This is a three-dimensional structural diagram of the second left positioning and pressing structure, the second middle positioning and pressing structure, and the second right positioning and pressing structure according to an embodiment of the present invention.

[0025] In the diagram: First positioning mechanism A, Second positioning mechanism B, Positioning machining base C, Rack D.

[0026] First left positioning component A1, first middle positioning component A2, first right positioning component A3, positioning clamp A4, vertical fixing block A5, vertical tensioning block A6, vertical sliding block A7, vertical return spring A8, vertical tensioning bolt A9, horizontal fixing block A90, horizontal tensioning block A901, horizontal sliding block A902, horizontal return spring A903, first positioning guide rod A904, first positioning pressure plate A905, first positioning support rod A906, first positioning screw A907.

[0027] Second left positioning component B1, second middle positioning component B2, second right positioning component B3, second positioning screw B4, second positioning pressure plate B5, second positioning guide rod B6

[0028] First left positioning base plate A11, first left positioning clamping structure A12, first left positioning pressing structure A13, first left positioning directional column A14, first left positioning moving steel ball A15, first left positioning lifting ring A16.

[0029] First positioning base plate A21, first positioning clamping structure A22, first positioning pressing structure A23, first positioning lifting ring A24

[0030] First right positioning base plate A31, first right positioning clamping structure A32, first right positioning pressing structure A33, first right positioning directional column A34, first right positioning moving steel ball A35, first right positioning lifting ring A36.

[0031] Second left positioning base plate B11, second left positioning pad B12, second left positioning leveling block B13, second left positioning pad screw B14, second left positioning leveling block screw B15, second left positioning clamping structure B16, second left positioning lifting ring B17, second left positioning diamond pin B18.

[0032] Second intermediate positioning base plate B21, second intermediate positioning pad B22, second intermediate positioning leveling block B23, second intermediate positioning pad screw B24, second intermediate positioning leveling block screw B25, second intermediate positioning clamping structure B26, second intermediate positioning lifting ring B27.

[0033] Second right positioning base plate B31, second right positioning pad B32, second right positioning leveling block B33, second right positioning pad screw B34, second right positioning leveling block screw B35, second right positioning clamping structure B36, second right positioning lifting ring B37, second right positioning diamond pin B38. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0035] Example

[0036] See Figures 1 to 7 As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0037] The positioning and machining device for the segmented drive rack with inner arc in this embodiment includes a first positioning mechanism A, a second positioning mechanism B, and a positioning and machining base C. The first positioning mechanism A is located above the second positioning mechanism B, and both the first positioning mechanism A and the second positioning mechanism B are mounted on the positioning and machining base C.

[0038] In this embodiment, the first positioning mechanism A includes a first left positioning component A1, a first middle positioning component A2, and a first right positioning component A3. The first left positioning component A1 and the first right positioning component A3 are respectively disposed on the left and right sides of the first middle positioning component A2. The first left positioning component A1, the first middle positioning component A2, and the first right positioning component A3 are all disposed on the positioning processing base C.

[0039] In this embodiment, the second positioning mechanism B includes a second left positioning component B1, a second middle positioning component B2, and a second right positioning component B3. The second left positioning component B1 and the second right positioning component B3 are respectively disposed on the left and right sides of the second middle positioning component B2. The second left positioning component B1, the second middle positioning component B2, and the second right positioning component B3 are all disposed on the positioning processing base C.

[0040] In this embodiment, the first left positioning component A1, the first middle positioning component A2, and the first right positioning component A3 are located above the second left positioning component B1, the second middle positioning component B2, and the second right positioning component B3, respectively.

[0041] In this embodiment, the first left positioning component A1 includes a first left positioning base plate A11, a first left positioning clamping structure A12, a first left positioning pressing structure A13, a first left positioning directional column A14, a first left positioning moving steel ball A15, and a first left positioning lifting ring A16. The first left positioning base plate A11 is disposed on the positioning processing base C, and the first left positioning clamping structure A12, the first left positioning pressing structure A13, the first left positioning directional column A14, the first left positioning moving steel ball A15, and the first left positioning lifting ring A16 are all disposed on the first left positioning base plate A11.

[0042] In this embodiment, the first positioning component A2 includes a first positioning base plate A21, a first positioning clamping structure A22, a first positioning pressing structure A23, and a first positioning lifting ring A24. The first positioning base plate A21 is disposed on the positioning processing base C, and the first positioning clamping structure A22, the first positioning pressing structure A23, and the first positioning lifting ring A24 are all disposed on the first positioning base plate A21.

[0043] In this embodiment, the first right positioning component A3 includes a first right positioning base plate A31, a first right positioning clamping structure A32, a first right positioning pressing structure A33, a first right positioning directional column A34, a first right positioning moving steel ball A35, and a first right positioning lifting ring A36. The first right positioning base plate A31 is disposed on the positioning processing base C, and the first right positioning clamping structure A32, the first right positioning pressing structure A33, the first right positioning directional column A34, the first right positioning moving steel ball A35, and the first right positioning lifting ring A36 are all disposed on the first right positioning base plate A31.

[0044] In this embodiment, the second left positioning component B1 includes a second left positioning base plate B11, a second left positioning pad B12, a second left positioning level block B13, a second left positioning pad screw B14, a second left positioning level block screw B15, a second left positioning clamping structure B16, a second left positioning lifting ring B17, and a second left positioning diamond pin B18. The second left positioning base plate B11 is mounted on the positioning processing base C. The second left positioning pad B12, the second left positioning level block B13, the second left positioning pad screw B14, the second left positioning level block screw B15, the second left positioning clamping structure B16, the second left positioning lifting ring B17, and the second left positioning diamond pin B18 are all mounted on the second left positioning base plate B11. The second left positioning pad screw B14 cooperates with the second left positioning pad B12, and the second left positioning level block screw B15 passes through the second left positioning level block B13.

[0045] In this embodiment, the second positioning component B2 includes a second positioning base plate B21, a second positioning pad B22, a second positioning leveling block B23, a second positioning pad screw B24, a second positioning leveling block screw B25, a second positioning clamping structure B26, and a second positioning lifting ring B27. The second positioning base plate B21 is mounted on the positioning processing base C. The second positioning pad B22, the second positioning leveling block B23, the second positioning pad screw B24, the second positioning leveling block screw B25, the second positioning clamping structure B26, and the second positioning lifting ring B27 are all mounted on the second positioning base plate B21. The second positioning pad screw B24 cooperates with the second positioning pad B22, and the second positioning leveling block screw B25 passes through the second positioning leveling block B23.

[0046] In this embodiment, the second right positioning component B3 includes a second right positioning base plate B31, a second right positioning pad B32, a second right positioning level block B33, a second right positioning pad screw B34, a second right positioning level block screw B35, a second right positioning clamping structure B36, a second right positioning lifting ring B37, and a second right positioning diamond pin B38. The second right positioning base plate B31 is mounted on the positioning processing base C. The second right positioning pad B32, the second right positioning level block B33, the second right positioning pad screw B34, the second right positioning level block screw B35, the second right positioning clamping structure B36, the second right positioning lifting ring B37, and the second right positioning diamond pin B38 are all mounted on the second right positioning base plate B31. The second right positioning pad screw B34 cooperates with the second right positioning pad B32, and the second right positioning level block screw B35 passes through the second right positioning level block B33.

[0047] In this embodiment, the first left positioning clamping structure A12, the first middle positioning clamping structure A22, and the first right positioning clamping structure A32 each include a positioning clamp A4, a vertical fixing block A5, a vertical tensioning block A6, a vertical sliding block A7, a vertical return spring A8, a vertical tensioning bolt A9, a horizontal fixing block A90, a horizontal tensioning block A901, a horizontal sliding block A902, and a horizontal return spring A903. The vertical fixing block A5 and the horizontal fixing block A90 are both fixed to the positioning clamp A4. The vertical tension block A6 and the horizontal tension block A901 are slidably mounted on the vertical fixed block A5 and the horizontal fixed block A90, respectively. The vertical sliding block A7 and the horizontal sliding block A902 are slidably mounted on the vertical tension block A6 and the horizontal tension block A901, respectively. The vertical return spring A8 and the horizontal return spring A903 abut against the vertical tension block A6 and the horizontal tension block A901, respectively. The vertical tension block A6 and the horizontal tension block A901 are controlled by the vertical tension bolt A9 and the horizontal tension bolt, respectively.

[0048] In this embodiment, the first left positioning clamping structure A13, the first middle positioning clamping structure A23, and the first right positioning clamping structure A33 all include a first positioning guide rod A904, a first positioning pressure plate A905, a first positioning support rod A906, and a first positioning screw A907. The first positioning guide rod A904 and the first positioning screw A907 both penetrate through the first positioning pressure plate A905, and the first positioning pressure plate A905 is located above the first positioning support rod A906.

[0049] In this embodiment, the second left positioning clamping structure B16, the second middle positioning clamping structure B26, and the second right positioning clamping structure B36 all include a second positioning screw B4, a second positioning pressure plate B5, and a second positioning guide rod B6. The second positioning screw B4 and the second positioning guide rod B6 both penetrate the second positioning pressure plate B5.

[0050] Specifically, rack D is placed on either the first positioning mechanism A or the second positioning mechanism B. When rack D is placed on the first positioning mechanism A, the lower end face of rack D contacts the first left positioning moving steel ball A15, the first right positioning moving steel ball A35, the vertical sliding block A7, and the first positioning support rod A906. Both ends of rack D contact the second left positioning pad screw B14 and the second right positioning pad screw B34. Tightening the first positioning screw A907 causes the first positioning pressure plate A905 to contact the upper end face of rack D. Tightening the vertical tension bolt A9 and the horizontal tension bolt respectively allows the vertical sliding block A7 and the horizontal sliding block A902 to move upwards and to the right respectively (towards...). Figure 5 (The orientation description is accurate). At this time, the rack D can be machined. Loosening the vertical tension bolt A9 and the horizontal tension bolt can reset the vertical tension block A6 and the horizontal tension block A901 respectively under the action of the vertical return spring A8 and the horizontal return spring A903.

[0051] When rack D is placed on the second positioning mechanism B, the lower end face of rack D contacts the second left positioning pad B12, the second left positioning level block B13, the second left positioning diamond pin B18, the second middle positioning pad B22, the second middle positioning level block B23, the second right positioning pad B32, the second right positioning level block B33, and the second right positioning diamond pin B38. The second left positioning pad screw B14, the second middle positioning pad screw B24, and the second right positioning pad screw B34 are then engaged into the tooth grooves of rack D and tightened. The second left positioning equal-height block screw B15, the second middle positioning equal-height block screw B25, and the second right positioning equal-height block screw B35 pass through the rack D, and correspondingly pass through the second left positioning equal-height block B13, the second middle positioning equal-height block B23, and the second right positioning equal-height block B33. Then tighten the second left positioning equal-height block screw B15, the second middle positioning equal-height block screw B25, and the second right positioning equal-height block screw B35. Tighten the second positioning screw B4 so that the second positioning pressure plate B5 contacts the reverse side of the rack D. At this time, the rack D can be processed.

[0052] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components, etc. The above description is merely illustrative of the structure of the present invention. All equivalent or simple variations made based on the structure, features, and principles described in this patent concept are included within the protection scope of this patent. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to substitute them, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.

Claims

1. A positioning machining method for an internal arc segmented drive rack, wherein the positioning machining method for the internal arc segmented drive rack is implemented using a positioning machining device for the internal arc segmented drive rack, the positioning machining device for the internal arc segmented drive rack comprising a first positioning mechanism (A), a second positioning mechanism (B), and a positioning machining base (C), wherein the first positioning mechanism (A) is located above the second positioning mechanism (B), and both the first positioning mechanism (A) and the second positioning mechanism (B) are mounted on the positioning machining base (C), characterized in that: The first positioning mechanism (A) includes a first left positioning component (A1), a first middle positioning component (A2), and a first right positioning component (A3). The first left positioning component (A1) and the first right positioning component (A3) are respectively disposed on the left and right sides of the first middle positioning component (A2). The first left positioning component (A1), the first middle positioning component (A2), and the first right positioning component (A3) are all disposed on the positioning processing base (C). The second positioning mechanism (B) includes a second left positioning component (B1), a second middle positioning component (B2), and a second right positioning component (B3). The positioning component (B3), the second left positioning component (B1) and the second right positioning component (B3) are respectively disposed on the left and right sides of the second middle positioning component (B2). The second left positioning component (B1), the second middle positioning component (B2) and the second right positioning component (B3) are all disposed on the positioning processing base (C). The first left positioning component (A1), the first middle positioning component (A2) and the first right positioning component (A3) are respectively located above the second left positioning component (B1), the second middle positioning component (B2) and the second right positioning component (B3). The positioning and machining method for the segmented inner arc drive rack is as follows: The rack (D) is placed on the first positioning mechanism (A) or the second positioning mechanism (B). When the rack (D) is placed on the first positioning mechanism (A), the lower end face of the rack (D) contacts the first left positioning moving steel ball (A15), the first right positioning moving steel ball (A35), the vertical sliding block (A7), and the first positioning support rod (A906), and both ends of the rack (D) contact the second left positioning pad screw (B14) and the second right positioning pad screw (B34). Tightening the first positioning screw (A907) causes the first positioning pressure plate (A905) to... When the vertical tension bolt (A9) and horizontal tension bolt (A902) are in contact with the upper end face of the rack (D), tightening the vertical tension bolt (A9) and horizontal tension bolt respectively will cause the vertical sliding block (A7) and horizontal sliding block (A902) to move upward and to the right respectively. At this time, the rack (D) can be processed. Loosening the vertical tension bolt (A9) and horizontal tension bolt will reset the vertical tension block (A6) and horizontal tension block (A901) respectively under the action of the vertical return spring (A8) and horizontal return spring (A903). When the rack (D) is placed on the second positioning mechanism (B), the lower end face of the rack (D) contacts the second left positioning pad (B12), the second left positioning level block (B13), the second left positioning pin (B18), the second middle positioning pad (B22), the second middle positioning level block (B23), the second right positioning pad (B32), the second right positioning level block (B33), and the second right positioning pin (B38). The second left positioning pad screw (B14), the second middle positioning pad screw (B24), and the second right positioning pad screw (B34) are then engaged into the tooth grooves of the rack (D) and tightened. The second left positioning equalization block screw (B15), the second middle positioning equalization block screw (B25), and the second right positioning equalization block screw (B35) pass through the rack (D) and correspondingly pass through the second left positioning equalization block (B13), the second middle positioning equalization block (B23), and the second right positioning equalization block (B33). Then, tighten the second left positioning equalization block screw (B15), the second middle positioning equalization block screw (B25), and the second right positioning equalization block screw (B35). Tighten the second positioning screw (B4) so ​​that the second positioning pressure plate (B5) contacts the reverse side of the rack (D). At this time, the rack (D) can be processed.

2. The positioning and machining method for the segmented internal arc drive rack according to claim 1, characterized in that: The first left positioning component (A1) includes a first left positioning base plate (A11), a first left positioning clamping structure (A12), a first left positioning pressing structure (A13), a first left positioning directional column (A14), a first left positioning moving steel ball (A15), and a first left positioning lifting ring (A16). The first left positioning base plate (A11) is set on the positioning processing base (C), and the first left positioning clamping structure (A12), the first left positioning pressing structure (A13), the first left positioning directional column (A14), the first left positioning moving steel ball (A15) and the first left positioning lifting ring (A16) are all set on the first left positioning base plate (A11).

3. The positioning and machining method for the segmented internal arc drive rack according to claim 2, characterized in that: The first positioning component (A2) includes a first positioning base plate (A21), a first positioning clamping structure (A22), a first positioning pressing structure (A23), and a first positioning lifting ring (A24). The first positioning base plate (A21) is set on the positioning processing base (C), and the first positioning clamping structure (A22), the first positioning pressing structure (A23) and the first positioning lifting ring (A24) are all set on the first positioning base plate (A21).

4. The positioning and machining method for the segmented internal arc drive rack according to claim 3, characterized in that: The first right positioning component (A3) includes a first right positioning base plate (A31), a first right positioning clamping structure (A32), a first right positioning pressing structure (A33), a first right positioning directional column (A34), a first right positioning moving steel ball (A35), and a first right positioning lifting ring (A36). The first right positioning base plate (A31) is set on the positioning processing base (C), and the first right positioning clamping structure (A32), the first right positioning pressing structure (A33), the first right positioning directional column (A34), the first right positioning moving steel ball (A35) and the first right positioning lifting ring (A36) are all set on the first right positioning base plate (A31).

5. The positioning and machining method for the segmented internal arc drive rack according to claim 1, characterized in that: The second left positioning assembly (B1) includes a second left positioning base plate (B11), a second left positioning pad (B12), a second left positioning leveling block (B13), a second left positioning pad screw (B14), a second left positioning leveling block screw (B15), a second left positioning clamping structure (B16), a second left positioning lifting ring (B17), and a second left positioning diamond pin (B18). The second left positioning base plate (B11) is set on the positioning processing base (C). The second left positioning pad (B12), the second left positioning level block (B13), the second left positioning pad screw (B14), the second left positioning level block screw (B15), the second left positioning clamping structure (B16), the second left positioning lifting ring (B17), and the second left positioning diamond pin (B18) are all set on the second left positioning base plate (B11). The second left positioning pad screw (B14) cooperates with the second left positioning pad (B12), and the second left positioning level block screw (B15) passes through the second left positioning level block (B13).

6. The positioning and machining method for the segmented internal arc drive rack according to claim 5, characterized in that: The second positioning component (B2) includes a second positioning base plate (B21), a second positioning pad (B22), a second positioning leveling block (B23), a second positioning pad screw (B24), a second positioning leveling block screw (B25), a second positioning clamping structure (B26), and a second positioning lifting ring (B27). The second positioning base plate (B21) is set on the positioning processing base (C). The second positioning pad (B22), the second positioning level block (B23), the second positioning pad screw (B24), the second positioning level block screw (B25), the second positioning clamping structure (B26), and the second positioning lifting ring (B27) are all set on the second positioning base plate (B21). The second positioning pad screw (B24) cooperates with the second positioning pad (B22), and the second positioning level block screw (B25) passes through the second positioning level block (B23).

7. The positioning and machining method for the segmented internal arc drive rack according to claim 6, characterized in that: The second right positioning assembly (B3) includes a second right positioning base plate (B31), a second right positioning pad (B32), a second right positioning leveling block (B33), a second right positioning pad screw (B34), a second right positioning leveling block screw (B35), a second right positioning clamping structure (B36), a second right positioning lifting ring (B37), and a second right positioning diamond pin (B38). The second right positioning base plate (B31) is set on the positioning processing base (C). The second right positioning pad (B32), the second right positioning level block (B33), the second right positioning pad screw (B34), the second right positioning level block screw (B35), the second right positioning clamping structure (B36), the second right positioning lifting ring (B37), and the second right positioning diamond pin (B38) are all set on the second right positioning base plate (B31). The second right positioning pad screw (B34) cooperates with the second right positioning pad (B32), and the second right positioning level block screw (B35) passes through the second right positioning level block (B33).

8. The positioning and machining method for the segmented internal arc drive rack according to claim 4, characterized in that: The first left positioning clamping structure (A12), the first middle positioning clamping structure (A22), and the first right positioning clamping structure (A32) all include a positioning clamp (A4), a vertical fixing block (A5), a vertical tensioning block (A6), a vertical sliding block (A7), a vertical return spring (A8), a vertical tensioning bolt (A9), a horizontal fixing block (A90), a horizontal tensioning block (A901), a horizontal sliding block (A902), and a horizontal return spring (A903). The vertical fixing block (A5) and the horizontal fixing block (A90) are both fixed on the positioning clamp (A4). The vertical tensioning block (A6) and the horizontal tensioning block (A901) are slidably disposed on the vertical fixing block (A5) and the horizontal fixing block (A90), respectively. The vertical sliding block (A7) and the horizontal sliding block (A902) are slidably disposed on the vertical tensioning block (A6) and the horizontal tensioning block (A901), respectively. The vertical return spring (A8) and the horizontal return spring (A903) abut against the vertical tensioning block (A6) and the horizontal tensioning block (A901), respectively. The vertical tensioning block (A6) and the horizontal tensioning block (A901) are controlled by the vertical tensioning bolt (A9) and the horizontal tensioning bolt, respectively.

9. The positioning and machining method for the segmented internal arc drive rack according to claim 4, characterized in that: The first left positioning and clamping structure (A13), the first middle positioning and clamping structure (A23) and the first right positioning and clamping structure (A33) each include a first positioning guide rod (A904), a first positioning pressure plate (A905), a first positioning support rod (A906) and a first positioning screw (A907). The first positioning guide rod (A904) and the first positioning screw (A907) both pass through the first positioning pressure plate (A905), and the first positioning pressure plate (A905) is located above the first positioning support rod (A906).

10. The positioning and machining method for the segmented internal arc drive rack according to claim 7, characterized in that: The second left positioning clamping structure (B16), the second middle positioning clamping structure (B26), and the second right positioning clamping structure (B36) all include a second positioning screw (B4), a second positioning pressure plate (B5), and a second positioning guide rod (B6), with the second positioning screw (B4) and the second positioning guide rod (B6) both penetrating through the second positioning pressure plate (B5).

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