A machining process for a steam turbine rotor

Abstract

The application relates to the technical field of steam turbine rotor machining, and discloses a steam turbine rotor machining process which comprises the following steps: step one, installing a shaft blank: first, installing a shaft blank on a chuck device; step two, machining the shaft blank: machining the shaft blank into a steam turbine rotor through a milling device; and when the shaft blank is being machined, processing the scraps through a scrap processing device. The application is convenient for processing the scraps.

Description

Technical Field

[0001] This application relates to the technical field of steam turbine rotor machining, and in particular to a machining process for steam turbine rotors. Background Technology

[0002] Currently, existing technologies use milling machines when machining turbine rotors. A milling machine generally includes a worktable, a top plate, a chuck device mounted on the top of the worktable, and a milling device mounted on the bottom of the top plate. The chuck device is used to position the shaft blank and drive its rotation; the chuck device is a conventional structure. The milling device includes two slots at the bottom of the top plate, two longitudinal slides slidably connected to the two slots, a longitudinal drive mechanism mounted on the two slots to drive the two longitudinal slides, a longitudinal frame mounted on the bottom of the two longitudinal slides, a transverse slide slidably connected to the longitudinal frame, a transverse drive mechanism mounted on the longitudinal frame to drive the transverse slides, a vertical frame mounted on the bottom of the transverse slides, a mounting frame slidably connected to the vertical frame, a tool holder mounted on the mounting frame, a milling cutter mounted on the tool holder, and a vertical drive mechanism mounted on the vertical frame to drive the mounting frame. The longitudinal drive mechanism, transverse drive mechanism, and vertical drive mechanism are all conventional linear drive structures such as lead screw motors.

[0003] The existing turbine rotor machining process generally includes the following steps: Step 1, installing the shaft blank: first, install the shaft blank onto the chuck device; Step 2, machining the shaft blank: use a milling device to machine the shaft blank into a turbine rotor.

[0004] However, when processing the above-mentioned shaft blanks, some debris is generated, and the existing technology makes it inconvenient to handle the debris. Summary of the Invention

[0005] To facilitate the processing of debris, this application provides a machining process for a steam turbine rotor, employing the following technical solution:

[0006] A machining process for a steam turbine rotor includes the following steps:

[0007] Step 1: Install the shaft blank: First, install the shaft blank onto the chuck device;

[0008] Step 2: Machining the shaft blank: The shaft blank is machined into a steam turbine rotor using a milling device; during the machining of the shaft blank, the debris is processed by a chip removal device.

[0009] By adopting the above technical solution, the debris processing device facilitates the processing of debris.

[0010] Optionally, in step two, the milling device includes two slides formed at the bottom of the top plate, two longitudinal slides slidably connected to the two slides, a longitudinal drive mechanism mounted on the two slides for driving the two longitudinal slides to move, a longitudinal frame mounted on the bottom of the two longitudinal slides, a transverse slide slidably connected to the longitudinal frame, a transverse drive mechanism mounted on the longitudinal frame for driving the transverse slides to move, a vertical frame mounted on the bottom of the transverse slides, a mounting frame slidably connected to the vertical frame, a tool holder mounted on the mounting frame, a milling cutter mounted on the tool holder, and a vertical drive mechanism mounted on the vertical frame for driving the mounting frame to move.

[0011] By adopting the above technical solution, the longitudinal drive mechanism, the transverse drive mechanism, and the longitudinal drive mechanism are designed to facilitate changing the position of the milling cutter; the milling cutter is designed to facilitate the machining of the shaft blank.

[0012] Optionally, in step two, the debris handling device includes a mounting hole in the workbench, a receiving frame installed in the mounting hole, a discharge port at the bottom of the receiving frame, and two rotating plates rotatably connected to the bottom of the discharge port; support mechanisms for supporting the two rotating plates are respectively installed on both sides of the workbench, a movable plate is slidably arranged below the receiving frame, a turnover frame is detachably installed on the top of the movable plate, and a driving mechanism for driving the movable plate to move is installed on the side wall of the workbench.

[0013] By adopting the above technical solution, the debris is first collected by the receiving frame. When the debris in the receiving frame needs to be processed, the moving plate is first driven upward by the driving mechanism. The upward movement of the moving plate drives the turnover frame upward. Then, under the action of the support mechanism, the support on the rotating plate can be released. At this time, the rotating plate rotates downward, and the material in the receiving frame is poured into the turnover frame. Next, the moving plate is driven downward by the driving mechanism, and then the support mechanism restores the support on the rotating plate. Then, the turnover frame can be removed to process the debris. In summary, the debris processing device is designed to facilitate the processing of debris.

[0014] Optionally, each set of support mechanisms includes a support guide rod installed on one side of the workbench, a support sleeve slidably connected to the support guide rod, a support plate installed at the bottom of the support sleeve, and a receiving plate fixed to the bottom of the support. The support plate can support the rotating plate, and multiple support springs are installed between the receiving plate and the workbench. A connecting cylinder is bolted inside the turnover frame, and a telescopic plate is bolted inside the connecting cylinder. The telescopic plate can be slidably connected to the inner wall of the connecting cylinder. The telescopic plate and the receiving plate are respectively provided with inclined surfaces on their opposite inner sides, and the two inclined surfaces match each other. In the initial state, the support plate can support the bottom of the rotating plate under the action of the support springs.

[0015] By adopting the above technical solution, the driving mechanism drives the moving plate to move upward, which in turn drives the turnover frame to move upward, which in turn drives the telescopic plate to move upward. Then, under the action of the inclined plane, the telescopic plate drives the receiving plate to move away from the rotating plate. The movement of the receiving plate away from the rotating plate on the one hand compresses the support spring, and on the other hand, it releases the support for the rotating plate, allowing the rotating plate to rotate downward. After the receiving frame finishes discharging material, the driving mechanism first drives the moving plate to move downward. The downward movement of the moving plate separates the telescopic plate from the receiving plate. Then, the receiving plate resets under the action of the support spring. The reset of the receiving plate drives the support plate to reset, and then the support plate can drive the rotating plate to rotate upward to reset. In summary, the designed support mechanism facilitates the support of the rotating plate.

[0016] Optionally, the driving mechanism includes a driving motor mounted on the side wall of the worktable, a first bevel gear mounted on the output shaft of the driving motor, a driving screw rotatably connected to the side wall of the worktable, a second bevel gear sleeved and fixed to the outer side wall of the driving screw, and a driving guide rod fixed to the side wall of the worktable; the first bevel gear and the second bevel gear mesh; the moving plate is threadedly connected to the driving screw, and the moving plate is slidably connected to the driving guide rod.

[0017] By adopting the above technical solution, when it is necessary to drive the moving plate to move, the drive motor is started first, and then the output shaft of the drive motor drives the first bevel gear to rotate. The rotation of the first bevel gear drives the second bevel gear to rotate, and the rotation of the second bevel gear drives the drive screw to rotate. The rotation of the drive screw can drive the moving plate to move. In summary, the drive mechanism is designed to facilitate the movement of the moving plate.

[0018] Optionally, a card plate is installed at the bottom of the turnover frame, and a card slot is opened at the top of the moving plate. The card plate is engaged with the card slot, and a pushing groove is opened at the top of the moving plate. A pushing mechanism for pushing the turnover frame to move upward is installed in the pushing groove.

[0019] By adopting the above technical solution, the card plate and card slot are designed to facilitate the installation of the turnover frame.

[0020] Optionally, the pushing mechanism includes a pushing plate slidably connected to the pushing groove. Vertical grooves are respectively opened on both sides of the pushing groove. A horizontal plate is bolted to the top of each vertical groove. Slide plates are respectively fixed to both ends of the pushing plate. Two slide plates are slidably connected to two vertical grooves respectively. A return spring is installed between the slide plate and the horizontal plate. Multiple drive plates are bolted to the bottom of the worktable. Multiple moving holes are opened at the bottom of the pushing groove. The drive plates are slidably connected to the moving holes one by one. The drive plates can drive the pushing plate to move. Multiple movable balls are rotatably connected to the top of the pushing plate. The movable balls can push the turnover frame to move upward.

[0021] By adopting the above technical solution, the drive plate is designed to push the turnover frame upward, which facilitates the separation of the card plate from the card slot. Then, under the action of the movable ball, it is easy to pull the turnover frame to move. In summary, the push mechanism is designed to facilitate the separation of the card plate from the card slot.

[0022] Optionally, a limiting plate is bolted to the top of the movable plate, and when the turnover frame abuts against the limiting plate, the card plate is aligned with the card slot.

[0023] By adopting the above technical solution, the limiting plate is set to facilitate the alignment of the card plate with the card slot.

[0024] Optionally, a blocking mechanism is installed on the side wall of the workbench. The blocking mechanism includes an electric push rod installed on the side wall of the workbench and a baffle installed on the output end of the electric push rod. A through hole is provided in the workbench for the baffle to slide, and the top of the turnover frame can abut against the bottom of the baffle.

[0025] By adopting the above technical solution, when it is necessary for the card plate to be engaged in the card slot, the turnover frame is first moved to abut against the limiting plate. At this time, the card plate is aligned with the card slot. Then, the output end of the electric push rod pushes the baffle above the turnover frame. Next, the moving plate is driven to move upward by the driving mechanism. The moving plate moves upward and drives the turnover frame to move upward. Then, under the action of the baffle, it is easy for the card plate to be engaged in the card slot. In summary, the blocking mechanism facilitates the card plate to be engaged in the card slot.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] First, the debris is collected by the receiving frame. When the debris in the receiving frame needs to be processed, the moving plate is driven upward by the driving mechanism. The upward movement of the moving plate causes the turnover frame to move upward. Then, under the action of the support mechanism, the support on the rotating plate is released, and the rotating plate rotates downward. The material in the receiving frame is then poured into the turnover frame. Next, the moving plate is driven downward by the driving mechanism, and then the support mechanism restores the support on the rotating plate. Finally, the turnover frame can be removed to process the debris. In summary, the debris processing device is designed to facilitate the processing of debris. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the structure of the debris handling device shown in the embodiments of this application.

[0030] Figure 3 This is a schematic diagram of the structure used to show the support mechanism in the embodiments of this application.

[0031] Figure 4 This is a schematic diagram of the structure of the pushing mechanism used in the embodiments of this application.

[0032] Figure 5 This is a schematic diagram of the structure used to show the connection between the sliding plate and the return spring in an embodiment of this application.

[0033] Reference numerals: 1. Worktable; 2. Chuck assembly; 3. Milling device; 31. Top plate; 311. Slide groove; 32. Longitudinal slide; 33. Longitudinal drive mechanism; 34. Longitudinal frame; 35. Transverse slide; 36. Transverse drive mechanism; 37. Vertical frame; 38. Mounting frame; 381. Tool holder; 382. Milling cutter; 39. Vertical drive mechanism; 4. Chip handling device; 41. Mounting hole; 42. Receiving frame; 421. Discharge port; 43. Rotating plate; 44. Moving plate; 441. Slot; 442. Push groove; 443. Vertical groove; 444. Moving hole; 45. Turnover frame; 46. 1. Card plate; 5. Support mechanism; 51. Support guide rod; 52. Support sleeve; 53. Support plate; 54. Receiving plate; 55. Limiting ring; 56. Support spring; 57. Connecting cylinder; 58. Telescopic plate; 59. Inclined surface; 6. Driving mechanism; 61. Driving motor; 62. First bevel gear; 63. Driving screw; 64. Second bevel gear; 65. Driving guide rod; 7. Pushing mechanism; 71. Push plate; 71. Slide plate; 72. Horizontal plate; 73. Return spring; 74. Drive plate; 75. Moving ball; 8. Limiting plate; 9. Blocking mechanism; 91. Electric push rod; 92. Baffle. Detailed Implementation

[0034] The embodiments of this application are described in detail below, and examples of the embodiments are shown in the accompanying drawings.

[0035] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] This application discloses a machining process for a steam turbine rotor, referring to... Figure 1 This includes the following steps:

[0037] Step 1: Install the shaft blank: First, install the shaft blank onto the chuck device 2;

[0038] Step 2: Machining the shaft blank: The shaft blank is machined into a steam turbine rotor by the milling device 3; during the machining of the shaft blank, the debris is processed by the chip processing device 4.

[0039] Reference Figure 1 In step two, the milling device 3 includes two slides 311 formed at the bottom of the top plate 31, two longitudinal slides 32 slidably connected to the two slides 311, a longitudinal drive mechanism 33 mounted on the two slides 311 for driving the two longitudinal slides 32 to move, a longitudinal frame 34 mounted on the bottom of the two longitudinal slides 32, a transverse slide 35 slidably connected within the longitudinal frame 34, a transverse drive mechanism 36 mounted on the longitudinal frame 34 for driving the transverse slide 35 to move, a vertical frame 37 mounted on the bottom of the transverse slide 35, a mounting frame 38 slidably connected to the vertical frame 37, a tool holder 381 mounted on the mounting frame 38, a milling cutter 382 mounted on the tool holder 381, and a vertical drive mechanism 39 mounted on the vertical frame 37 for driving the mounting frame 38 to move. The longitudinal drive mechanism 33, the transverse drive mechanism 36, and the longitudinal drive mechanism 33 facilitate changing the position of the milling cutter 382; the milling cutter 382 facilitates the machining of the shaft blank.

[0040] Reference Figure 1 and Figure 2 In step two, the debris handling device 4 includes a mounting hole 41 opened in the workbench 1, a receiving frame 42 installed in the mounting hole 41 by bolts, a discharge port 421 opened at the bottom of the receiving frame 42, and two rotating plates 43 rotatably connected to the bottom of the discharge port 421 by a rotating shaft; the two rotating plates 43 can block the discharge port 421, and support mechanisms 5 for supporting the two rotating plates 43 are respectively installed on both sides of the workbench 1. A moving plate 44 is vertically slidable below the receiving frame 42, and a turnover frame 45 is detachably installed on the top of the moving plate 44. A driving mechanism 6 for driving the moving plate 44 to move is installed on the side wall of the workbench 1. First, the debris is collected by the receiving frame 42. When the debris in the receiving frame needs to be processed, the moving plate 44 is driven upward by the driving mechanism 6. The upward movement of the moving plate 44 causes the turnover frame 45 to move upward. Then, under the action of the support mechanism 5, the support on the rotating plate 43 can be released. At this time, the rotating plate 43 rotates downward, and the material in the receiving frame 42 is poured into the turnover frame 45. Next, the moving plate 44 is driven downward by the driving mechanism 6, and then the support mechanism 5 restores the support on the rotating plate 43. Then, the turnover frame 45 can be removed to process the debris. In summary, the debris processing device 4 is designed to facilitate the processing of debris.

[0041] Reference Figure 2 and Figure 3Each set of support mechanisms 5 includes a support guide rod 51 horizontally installed on one side of the workbench 1, a support sleeve 52 slidably connected to the support guide rod 51 in the horizontal direction, a support plate 53 horizontally installed at the bottom of the support sleeve 52, and a receiving plate 54 fixed to the bottom of the support by bolts; one end of the support guide rod 51 is threadedly connected to a limit ring 55, one end of the support plate 53 is provided with a spherical surface and the top of the support plate 53 can support the rotating plate 43, and multiple support springs 56 are horizontally installed between the receiving plate 54 and the workbench 1; a connecting cylinder 57 is vertically bolted to the inside of the turnover frame 45, and a telescopic plate 58 is bolted to the inside of the connecting cylinder 57, and the telescopic plate 58 can slide vertically and is connected to the inner wall of the connecting cylinder 57; the telescopic plate 58 and the receiving plate 54 are respectively provided with inclined surfaces 59 on their opposite inner sides, and the two inclined surfaces 59 match each other; in the initial state, the support plate 53 can support the bottom of the rotating plate 43 under the action of the support springs 56. The driving mechanism 6 drives the moving plate 44 to move upward, which in turn drives the turnover frame 45 to move upward. The turnover frame 45 then drives the telescopic plate 58 to move upward. Under the action of the inclined plane 59, the telescopic plate 58 drives the receiving plate 54 to move away from the rotating plate 43. The movement of the receiving plate 54 away from the rotating plate 43 presses against the support spring 56 and releases the support for the rotating plate 43, allowing the rotating plate 43 to rotate downward. After the receiving frame 42 finishes discharging material, the driving mechanism 6 drives the moving plate 44 to move downward. The downward movement of the moving plate 44 separates the telescopic plate 58 from the receiving plate 54. Then, the receiving plate 54 resets under the action of the support spring 56. The reset of the receiving plate 54 drives the support plate 53 to reset, and the support plate 53 then drives the rotating plate 43 to rotate upward to reset. In summary, the support mechanism 5 facilitates the support of the rotating plate 43.

[0042] Reference Figure 2The driving mechanism 6 includes a driving motor 61 mounted on the side wall of the worktable 1, a first bevel gear 62 mounted on the output shaft of the driving motor 61, a driving screw 63 vertically rotatably connected to the side wall of the worktable 1 via a bearing, a second bevel gear 64 sleeved and fixed to the outer side wall of the driving screw 63, and a driving guide rod 65 vertically fixed to the side wall of the worktable 1; the first bevel gear 62 and the second bevel gear 64 mesh; the moving plate 44 is threadedly connected to the driving screw 63, and the driving screw 63 can lock the moving plate 44, that is, if the driving screw 63 does not rotate, the moving plate 44 will not move on its own; the driving guide rod 65 is set through the moving plate 44, and the moving plate 44 slides vertically and is connected to the driving guide rod 65. When it is necessary to drive the moving plate 44 to move, the drive motor 61 is started first. Then, the output shaft of the drive motor 61 drives the first bevel gear 62 to rotate. The rotation of the first bevel gear 62 drives the second bevel gear 64 to rotate. The rotation of the second bevel gear 64 drives the drive screw 63 to rotate. The rotation of the drive screw 63 can drive the moving plate 44 to move. In summary, the drive mechanism 6 is designed to facilitate the movement of the moving plate 44.

[0043] Reference Figure 2 and Figure 4 The bottom of the turnover frame 45 is equipped with multiple card plates 451, and the top of the movable plate 44 is provided with multiple slots 441. The card plates 451 are engaged with the slots 441. The top of the movable plate 44 is provided with a pushing groove 442, and a pushing mechanism 7 for pushing the turnover frame 45 upward is installed in the pushing groove 442. The card plates 451 and the slots 441 facilitate the installation of the turnover frame 45.

[0044] Reference Figure 2 , Figure 4 and Figure 5 The pushing mechanism 7 includes a pushing plate 71 that slides vertically to the pushing groove 442. Vertical grooves 443 are respectively opened on both sides of the pushing groove 442. A horizontal plate 72 is bolted to the top of each vertical groove 443. Slide plates 711 are fixed to both ends of the pushing plate 71. The two slide plates 711 are respectively slid vertically to the two vertical grooves 443. A return spring 73 is vertically installed between the slide plate 711 and the horizontal plate 72. Multiple drive plates 74 are vertically bolted to the bottom of the workbench 1. Multiple moving holes 444 are opened at the bottom of the pushing groove 442. The drive plates 74 are vertically slidably connected to the moving holes 444 one by one. The drive plates 74 can drive the pushing plate 71 to move. Multiple movable balls 75 are rotatably connected to the top of the pushing plate 71. The movable balls 75 can push the turnover frame 45 to move upward. The drive plate 74 is designed to push the turnover frame 45 upward, which facilitates the separation of the card plate 451 from the card slot 441. Then, under the action of the movable ball 75, it is easy to pull the turnover frame 45 to move. In summary, the push mechanism 7 is designed to facilitate the separation of the card plate 451 from the card slot 441.

[0045] Reference Figure 2 and Figure 4 The top of the movable plate 44 is vertically bolted with a limiting plate 8. The limiting plate 8 does not affect the rotation of the rotating plate 43. When the turnover frame 45 abuts against the limiting plate 8, the clamping plate 451 is aligned with the clamping slot 441. The limiting plate 8 is provided to facilitate the alignment of the clamping plate 451 with the clamping slot 441.

[0046] Reference Figure 2 and Figure 4 The two side walls of the workbench 1 are respectively equipped with blocking mechanisms 9. Each blocking mechanism 9 includes an electric push rod 91 that is horizontally installed on the side wall of the workbench 1 by bolts and a baffle 92 installed on the output end of the electric push rod 91. The workbench 1 is provided with a through hole for the baffle 92 to slide in the horizontal direction. The through hole is not shown in the figure. The top of the turnover frame 45 can abut against the bottom of the baffle 92. When it is necessary for the card plate 451 to engage with the card slot 441, first move the turnover frame 45 to abut against the limiting plate 8. At this time, the card plate 451 is aligned with the card slot 441. Then, press the turnover frame 45 down slightly. At this time, the card plate 451 enters the card slot 441 a little. Then, push the baffle 92 above the turnover frame 45 through the output end of the electric push rod 91. Next, drive the moving plate 44 to move upward through the driving mechanism 6. The moving plate 44 moves upward, causing the turnover frame 45 to move upward. Then, under the action of the baffle 92, it is easy for the card plate 451 to engage with the card slot 441. In summary, the blocking mechanism 9 is set to make it easy for the card plate 451 to engage with the card slot 441.

[0047] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A machining process for a steam turbine rotor, characterized in that, Includes the following steps: Step 1: Install the shaft blank: First, install the shaft blank onto the chuck device (2); Step 2: Machining the shaft blank: The shaft blank is machined into a steam turbine rotor by a milling device (3); During the machining of the shaft blank, the chips are processed by a chip processing device (4).

2. The machining process for a steam turbine rotor according to claim 1, characterized in that, In step two, the milling device (3) includes two slides (311) opened at the bottom of the top plate (31), two longitudinal slides (32) slidably connected to the two slides (311), a longitudinal drive mechanism (33) installed in the two slides (311) for driving the two longitudinal slides (32) to move, a longitudinal frame (34) installed at the bottom of the two longitudinal slides (32), a transverse slide (35) slidably connected in the longitudinal frame (34), a transverse drive mechanism (36) installed in the longitudinal frame (34) for driving the transverse slide (35) to move, a vertical frame (37) installed at the bottom of the transverse slide (35), a mounting frame (38) slidably connected to the vertical frame (37), a tool holder (381) installed in the mounting frame (38), a milling cutter (382) installed in the tool holder (381), and a vertical drive mechanism (39) installed in the vertical frame (37) for driving the mounting frame (38) to move.

3. The machining process for a steam turbine rotor according to claim 1, characterized in that, In step two, the debris handling device (4) includes a mounting hole (41) opened in the workbench (1), a receiving frame (42) installed in the mounting hole (41), a discharge port (421) opened at the bottom of the receiving frame (42), and two rotating plates (43) rotatably connected to the bottom of the discharge port (421); support mechanisms (5) for supporting the two rotating plates (43) are respectively installed on both sides of the workbench (1); a moving plate (44) is slidably arranged below the receiving frame (42); a turnover frame (45) is detachably installed on the top of the moving plate (44); and a driving mechanism (6) for driving the moving plate (44) to move is installed on the side wall of the workbench (1).

4. The machining process for a steam turbine rotor according to claim 3, characterized in that, Each set of support mechanisms (5) includes a support guide rod (51) installed on one side of the workbench (1), a support sleeve (52) slidably connected to the support guide rod (51), a support plate (53) installed at the bottom of the support sleeve (52), and a receiving plate (54) fixed to the bottom of the support; the support plate (53) can support the rotating plate (43), and multiple support springs (56) are installed between the receiving plate (54) and the workbench (1); the turnover frame (45) A connecting cylinder (57) is bolted inside, and a telescopic plate (58) is bolted inside the connecting cylinder (57). The telescopic plate (58) can slide and connect to the inner wall of the connecting cylinder (57). The telescopic plate (58) and the receiving plate (54) are respectively provided with inclined surfaces (59), and the two inclined surfaces (59) match each other. In the initial state, the support plate (53) can support the bottom of the rotating plate (43) under the action of the support spring (56).

5. The machining process for a steam turbine rotor according to claim 3, characterized in that, The driving mechanism (6) includes a driving motor (61) mounted on the side wall of the worktable (1), a first bevel gear (62) mounted on the output shaft of the driving motor (61), a driving screw (63) rotatably connected to the side wall of the worktable (1), a second bevel gear (64) sleeved and fixed to the outer side wall of the driving screw (63), and a driving guide rod (65) fixed to the side wall of the worktable (1); the first bevel gear (62) meshes with the second bevel gear (64); the moving plate (44) is threaded to the driving screw (63), and the moving plate (44) is slidably connected to the driving guide rod (65).

6. The machining process for a steam turbine rotor according to claim 5, characterized in that, The bottom of the turnover frame (45) is equipped with a card plate (451), and the top of the moving plate (44) is provided with a card slot (441). The card plate (451) is engaged with the card slot (441). The top of the moving plate (44) is provided with a push groove (442), and a push mechanism (7) for pushing the turnover frame (45) to move upward is installed in the push groove (442).

7. The machining process for a steam turbine rotor according to claim 6, characterized in that, The pushing mechanism (7) includes a pushing plate (71) slidably connected to the pushing groove (442). Vertical grooves (443) are respectively opened on both sides of the pushing groove (442). A horizontal plate (72) is bolted to the top of each vertical groove (443). Slide plates (711) are respectively fixed to both ends of the pushing plate (71). The two slide plates (711) are slidably connected to the two vertical grooves (443). A return spring is installed between the slide plate (711) and the horizontal plate (72). Spring (73); Multiple drive plates (74) are bolted to the bottom of the workbench (1), and multiple moving holes (444) are opened at the bottom of the push groove (442). The drive plates (74) are slidably connected to the moving holes (444) one by one, and the drive plates (74) can drive the push plates (71) to move. Multiple movable balls (75) are rotatably connected to the top of the push plates (71), and the movable balls (75) can push the turnover frame (45) to move upward.

8. The machining process for a steam turbine rotor according to claim 7, characterized in that, The top of the movable plate (44) is bolted with a limiting plate (8). When the turnover frame (45) abuts against the limiting plate (8), the card plate (451) is aligned with the card slot (441).

9. The machining process for a steam turbine rotor according to claim 7, characterized in that, The side wall of the workbench (1) is equipped with a blocking mechanism (9), which includes an electric push rod (91) installed on the side wall of the workbench (1) and a baffle (92) installed on the output end of the electric push rod (91); the workbench (1) is provided with a through hole for the baffle (92) to slide, and the top of the turnover frame (45) can abut against the bottom of the baffle (92).

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