A steam turbine outer ring processing device

Abstract

The present application discloses a steam turbine outer ring processing device, which relates to the field of mechanical processing, and includes a base, a milling mechanism is arranged on the base, a plurality of columns are arranged on the base, a working ring table is arranged on the top of the plurality of columns, the working ring table is located on the outer peripheral side of the milling mechanism, a plurality of first support blocks are arranged on the working ring table, the outer ring is placed on the plurality of first support blocks, the outer side of the end wall in the axial direction of the outer ring abuts against the top wall of the plurality of first support blocks, the inner side of the end wall in the axial direction of the outer ring is suspended, and a fixing component for pressing the outer ring down and fixing it on the first support block is arranged on the first support block. The present application uses a fixing component to fix the outer ring on the plurality of first support blocks, so that the outer ring is fixed more firmly on the working ring table, and the processing accuracy of the bevel groove is improved. The inner side of the end wall in the axial direction of the outer ring is suspended, so that the working table and the first support block will not interfere with the processing of the bevel groove, and the processing efficiency of the bevel groove is improved.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing, and in particular to a device for processing an outer ring of a steam turbine. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blade rows to rotate and perform work externally. The outer ring is an important component of the steam turbine, and multiple inclined grooves are machined on the inner circumferential side wall of the outer ring.

[0003] Currently, refer to Figure 1 When milling multiple inclined grooves 27 on the inner peripheral side wall of the outer ring 26, a gantry milling machine is usually used for processing. The inclined grooves 27 are opened at both ends along the axial direction of the outer ring 26. Since the multiple inclined grooves 27 are not connected to each other and are distributed around the inner wall of the outer ring 26 at equal intervals, they need to be processed one by one using a milling machine.

[0004] When the outer ring is fixed on the workbench of the milling machine and the axis of the outer ring is in the vertical direction, the end wall of the outer ring in the direction of the axis is parallel to the workbench. At this time, the workbench is prone to interfere with the processing of the bevel groove, which increases the difficulty of the bevel groove processing and increases the time required for the bevel groove processing; when the outer ring is fixed on the workbench of the milling machine and the axis of the outer ring is in the horizontal direction, the end wall of the outer ring in the direction of the axis is perpendicular to the workbench. At this time, when the bevel groove is processed, the outer ring is prone to shaking, which reduces the accuracy of the bevel groove processing. Summary of the invention

[0005] In order to improve the processing efficiency and processing accuracy of the outer ring bevel groove, the present application provides a turbine outer ring processing device.

[0006] The present application provides a steam turbine outer ring processing device that adopts the following technical solution:

[0007] A steam turbine outer ring processing device comprises a base, a milling mechanism is arranged on the base, and the milling mechanism comprises a turntable, a horizontal moving part, a vertical moving part and a milling head, the turntable is rotatably arranged on the base, the horizontal moving part is arranged in the middle of the top wall of the turntable, the vertical moving part is arranged at the horizontal moving end of the horizontal moving part, and the milling head is arranged at the vertical moving end of the vertical moving part; a plurality of columns are arranged on the base, and a working ring table is arranged on the top of the plurality of columns, the working ring table is located on the outer peripheral side of the milling mechanism, a plurality of first support blocks are fixedly arranged on the working ring table along its own circumferential direction at equal intervals, the outer ring is placed on the plurality of first support blocks, the outer side of the end wall of the outer ring in the axial direction abuts against the top walls of the plurality of first support blocks, and the inner side of the end wall of the outer ring in the axial direction is suspended, and each of the first support blocks is provided with a fixing component for pressing the outer ring down and fixing it on the first support block.

[0008] By adopting the above technical solution, when processing the inner wall of the outer ring, the outer ring is first placed on multiple first support blocks, and then the fixing components on each first support block are used to fix the outer ring together, so that the outer ring can be fixed on the multiple first support blocks, so that the outer ring is fixed more firmly on the working ring table, thereby improving the processing accuracy of the bevel groove; when processing the bevel groove, the turntable, the horizontal moving part and the vertical moving part can drive the milling head to move in multiple directions, and the milling head mills the bevel groove on the inner wall of the outer ring. Since the inner side of the end wall of the outer ring in the axial direction is suspended, the workbench and the first support blocks will not interfere with the processing of the bevel groove, thereby improving the processing efficiency of the bevel groove.

[0009] Preferably, the fixing assembly includes a pressure plate, a push rod and a first fixing member, the push rod is arranged on the first support block and is located on the side of the outer ring away from the milling mechanism, the two ends of the pressure plate are respectively placed on the top walls of the outer ring and the push rod, the first fixing member is penetrated through the middle of the pressure plate, and the bottom end of the first fixing member is threadedly fixed in the working ring table.

[0010] By adopting the above technical solution, when fixing the outer ring, first place one end of the pressure plate on the top of the push rod, then place the other end of the pressure plate on the top wall of the outer ring, and finally pass the first fixing piece through the pressure plate and thread the first fixing piece in the working ring platform. The first fixing piece drives the pressure plate to press on the push rod and the outer ring, so that the outer ring can be firmly fixed on the first support block.

[0011] Preferably, an abutment plate is provided at the top end of the push rod, the width of the abutment plate is greater than the diameter of the push rod, the pressure plate is placed on the abutment plate, the bottom end of the push rod is threadedly arranged in the first support block, and the push rod is adjustably arranged on the first support block along the vertical direction.

[0012] By adopting the above technical solution, the abutment plate increases the contact area between the push rod and the pressure plate, improves the stability of the pressure plate, and the push rod is rotated in the first support block to adjust the height of the push rod in the vertical direction, thereby making the fixing assembly suitable for fixing outer rings of different widths.

[0013] Preferably, a cushion block is provided at one end of the top wall of the first support block close to the milling mechanism, the outer ring is placed on the cushion block, and the bottom wall of the outer ring covers the top wall of the cushion block.

[0014] By adopting the above technical solution, the debris generated during the processing of the outer ring will splash onto the first support block. During the processing, the outer ring covers the pad block so that the debris will not splash onto the pad block. When one outer ring is completed and the second outer ring is placed, there is no debris on the top of the pad block, so there is no need to clean the pad block when the second outer ring is placed.

[0015] Preferably, it also includes a vernier caliper arranged on the milling head, wherein the measuring end of the vernier caliper abuts against the inner peripheral side wall of the outer ring.

[0016] By adopting the above technical solution, the cutter head on the milling head is replaced with a vernier caliper, and the milling mechanism drives the vernier caliper to rotate. The vernier caliper detects the placement position of the outer ring. When the placement position of the outer ring deviates, the outer ring is moved for adjustment, thereby enabling the processing accuracy of the bevel groove to be higher.

[0017] Preferably, a sliding cavity is provided in the cushion block, a lifting plate is provided in the sliding cavity of the cushion block for sliding along the vertical direction, a plurality of balls are rotatably embedded on the top wall of the lifting plate, a plurality of through holes connected to the sliding cavity are provided on the top wall of the cushion block, a plurality of the balls are respectively located in the plurality of through holes, the top end of the balls extend above the top wall of the cushion block, and the bottom wall of the outer ring abuts against the top end of the balls, a first elastic member is installed in the sliding cavity of the cushion block, one end of the first elastic member abuts against the bottom wall of the cushion block located in the sliding cavity, and the other end abuts against the bottom wall of the lifting plate away from the balls.

[0018] By adopting the above technical solution, the outer ring is placed on the pad, the first elastic member acts on the lifting plate to make the ball located in the through hole, the top of the ball in the pad abuts against the bottom wall of the outer ring, and at this time the bottom wall of the outer ring does not contact the top wall of the pad. When the vernier caliper detects a deviation in the placement position of the outer ring, the outer ring can move on the ball, thereby facilitating the adjustment of the outer ring; when the outer ring is adjusted, a fixing assembly is used to press down and fix the outer ring, and the outer ring presses down the lifting plate through the ball, and the lifting plate squeezes the first elastic member, and at this time the bottom wall of the outer ring abuts against the top wall of the pad, thereby making the outer ring more firmly fixed. When the outer ring is processed and removed, the first elastic member acts on the ball through the lifting plate, and makes the ball re-enter the through hole, thereby facilitating the movement and adjustment of the next outer ring.

[0019] Preferably, a second support block is fixedly arranged on the working ring platform between every two adjacent first support blocks, a slide groove is opened on the top wall of the second support block, a slider is arranged in the slide groove for sliding along the diameter direction of the outer ring, the side wall of the slider close to the milling mechanism abuts against the outer peripheral side wall of the outer ring, a push block is slidably arranged in the second support block on the side of the slider away from the outer ring, a second elastic member is arranged in the slide groove for the second support block, two ends of the second elastic member are respectively connected to the slider and the push block, an adjusting rod is arranged on the inner thread of the second support block, and the end of the adjusting rod is rotatably connected to the push block and drives the push block to slide along the diameter direction of the outer ring.

[0020] By adopting the above technical solution, when the outer ring is placed on the first support block, the sliders on the multiple second support blocks abut against the outer peripheral side wall of the outer ring. When the vernier caliper detects a deviation in the placement position of the outer ring, the adjusting rod is rotated, and the adjusting rod drives the push block to move toward or away from the outer ring. The push block slides in the slide groove and acts on the second elastic member, so that the elastic force of the second elastic member can be adjusted. The second elastic member then adjusts the extrusion pressure on the outer ring through the slider. At this time, the outer ring can automatically move and adjust under the action of the ball, so that the outer ring adjustment is more accurate and fast.

[0021] Preferably, a chamfer is provided on the top of the side wall of the sliding block close to the milling mechanism.

[0022] By adopting the above technical solution, when the outer ring is placed on the first support block, the outer peripheral side of the bottom end wall of the outer ring first contacts the chamfer of the slider. As the outer ring continues to descend, the chamfer pushes the slider away from the milling mechanism, and the slider then squeezes the second elastic member.

[0023] Preferably, a guide groove communicating with the slide groove is provided inside the second support block, and a guide block is provided on the sliding block. The guide block is slidably provided in the guide groove along the diameter direction of the outer ring.

[0024] By adopting the above technical solution, the slider drives the guide block to move in the guide groove when moving, and the guide block cooperates with the guide groove to guide and limit the movement of the slider, thereby making the movement of the slider more stable.

[0025] Preferably, a reinforcement plate is placed on the first support block and the second support block, a second fixing piece is passed through the middle of the reinforcement plate, and the bottom end of the second fixing piece is threadedly fixed in the working ring platform.

[0026] By adopting the above technical solution, the two ends of the reinforcement plate are first placed on the first support block and the second support block respectively, and then the second fixing piece is passed through the reinforcement plate and the second fixing piece is threadedly fixed in the working ring table, so that the first support block and the second support block can be reinforced, thereby further improving the stability of the outer ring fixation.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The outer ring is fixed on the plurality of first support blocks by using a fixing assembly, so that the outer ring is fixed more firmly on the working ring table, thereby improving the processing accuracy of the inclined groove. At the same time, since the inner side of the end wall of the outer ring in the axial direction is suspended, the working table and the first support blocks will not interfere with the processing of the inclined groove, thereby improving the processing efficiency of the inclined groove;

[0029] 2. The outer ring is supported by the pad. The debris generated during the processing of the outer ring will splash onto the first support block. During the processing, the outer ring covers the pad so that the debris will not splash onto the pad. When one outer ring is processed and the second outer ring is placed, there is no debris on the top of the pad, so there is no need to clean the pad when the second outer ring is placed.

[0030] 3. By using the adjusting rod, when the outer ring is placed on the first support block, the sliders on the multiple second support blocks abut against the outer peripheral side wall of the outer ring. When the vernier caliper detects a deviation in the placement position of the outer ring, the adjusting rod is rotated, and the adjusting rod drives the push block to move toward or away from the outer ring. The push block slides in the slide groove and acts on the second elastic member, thereby adjusting the elastic force of the second elastic member. The second elastic member then adjusts the extrusion pressure on the outer ring through the slider. At this time, the outer ring can automatically move and adjust under the action of the ball, thereby making the outer ring adjustment more accurate and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the outer ring in the background technology of this application;

[0032] Figure 2 This is a schematic diagram of the overall structure of the steam turbine outer ring processing device in Example 1 of the present application;

[0033] Figure 3 This is a schematic diagram of a part of the structure of the steam turbine outer ring processing device in Example 1 of the present application to highlight the milling mechanism;

[0034] Figure 4 This is an exploded view of a portion of the structure of the steam turbine outer ring processing device in Example 1 of the present application to highlight the fixing components;

[0035] Figure 5 This is a schematic diagram of the overall structure of the steam turbine outer ring processing device in Example 2 of the present application;

[0036] Figure 6 This is a partial structural schematic diagram of a steam turbine outer ring processing device in Example 2 of the present application;

[0037] Figure 7 This is an exploded cross-sectional view of a portion of the structure of the steam turbine outer ring processing device in Example 2 of the present application to highlight the internal structure of the second support block;

[0038] Figure 8 This is a partial structural sectional view of the turbine outer ring processing device in Example 1 of the present application, highlighting the gasket.

[0039] 1. Base; 2. Column; 3. Working ring table; 4. Milling mechanism; 41. Turntable; 42. Horizontal moving part; 43. Vertical moving part; 44. Milling head; 5. First support block; 6. Fixing assembly; 61. Pressing plate; 62. Push rod; 63. First fixing member; 7. Abutment plate; 8. Pad; 9. Vernier caliper; 10. Sliding cavity; 11. Lifting plate; 12. Ball; 13. Through hole; 14. First elastic member; 15. Second support block; 16. Slide groove; 17. Sliding block; 18. Push block; 19. Second elastic member; 20. Adjusting rod; 21. Chamfer; 22. Guide groove; 23. Guide block; 24. Reinforcement plate; 25. Second fixing member; 26. Outer ring; 27. Bevel groove; 28. Chip cover. DETAILED DESCRIPTION

[0040] The following is combined with Figure 2-8 This application is described in further detail.

[0041] An embodiment of the present application discloses a steam turbine outer ring processing device.

[0042] Example 1

[0043] Reference Figure 2 and Figure 3 A steam turbine outer ring processing device includes a base 1, on which a milling mechanism 4 is installed. The milling mechanism 4 includes a turntable 41, a horizontal moving part 42, a vertical moving part 43 and a milling head 44. The turntable 41 is circular and rotatably installed in the middle of the top wall of the base 1, the horizontal moving part 42 is installed on the top wall of the turntable 41, the vertical moving part 43 is installed at the horizontal moving end of the horizontal moving part 42, and the milling head 44 is installed at the vertical moving end of the vertical moving part 43.

[0044] The turntable 41 is driven by a servo motor, which drives the turntable 41 to rotate on the base 1 through gears or synchronous belts; the horizontal moving part 42 is driven by two servo motors, which drive the vertical moving part 43 to move along the X or Y direction on the horizontal plane through a lead screw and a guide rail; the vertical moving part 43 is driven by a servo motor, which drives the milling head 44 to move up and down in the vertical direction through a lead screw and a guide rail; the milling head 44 is driven by a motor, which drives the cutter head on the milling head 44 to rotate. The turntable 41, the horizontal moving part 42 and the vertical moving part 43 can drive the milling head 44 to move freely in multiple directions, and the cutter head on the milling head 44 can then perform milling processing on the outer ring.

[0045] Reference Figure 2A plurality of columns 2 are fixedly installed at equal intervals on the base 1 on the outer peripheral side of the milling mechanism 4. The columns 2 are installed in the vertical direction. A working ring table 3 is fixedly installed on the top of the plurality of columns 2, and the working ring table 3 is located on the outer peripheral side of the milling mechanism 4. Twelve first support blocks 5 are fixedly installed on the working ring table 3. The first support blocks 5 are installed along the diameter direction of the working ring table 3, and the twelve first support blocks 5 are arranged around the circumference of the working ring table 3 at equal intervals.

[0046] The outer ring is placed on twelve first support blocks 5 and is coaxially arranged with the working ring table 3. The bottom end wall of the outer ring in the axial direction abuts against the top wall of the first support block 5. The outer peripheral side in the diameter direction of the outer ring is the fixed part, which is abutted and placed on the first support block 5, and the inner peripheral side in the diameter direction of the outer ring is the processing part, which is suspended. A fixing assembly 6 is installed on the first support block 5 on the side of the outer ring away from the milling mechanism 4. The fixing assembly 6 presses down the fixed part of the outer ring and fixes the outer ring on the first support block 5, and the milling mechanism 4 processes the processing part of the outer ring to form an inclined groove.

[0047] When processing the inner wall of the outer ring, twelve fixing components 6 are used to fix the outer ring on the twelve first support blocks 5, so that the outer ring is fixed more firmly on the working ring table 3, thereby improving the processing accuracy of the inclined groove. At the same time, because the processing part of the outer ring is suspended, the working table and the first support blocks 5 will not interfere with the processing of the inclined groove, thereby improving the processing efficiency of the inclined groove.

[0048] Reference Figure 4 Specifically, the fixing assembly 6 includes a pressing plate 61, a push rod 62 and a first fixing member 63. The push rod 62 is located on the side of the outer ring away from the milling mechanism 4. The bottom end of the push rod 62 is threadedly installed on the top of the first support block 5 in the vertical direction. The top of the push rod 62 is fixedly installed with an abutment plate 7. The width of the abutment plate 7 is greater than the diameter of the push rod 62, and the height of the top wall of the abutment plate 7 is flush with the height of the top end wall in the axial direction of the outer ring. One end of the pressing plate 61 is placed on the fixing portion of the outer ring, and the other end is placed on the abutment plate 7. The first fixing member 63 passes through the pressing plate 61, and the bottom end of the first fixing member 63 is threadedly fixedly installed on the top of the first support block 5. In the present application, the first fixing member 63 can be selected as a bolt.

[0049] After the outer ring is placed on the first support block 5, the pressing plate 61 is first placed on the outer ring and the abutment plate 7, and then the first fixing member 63 passes through the pressing plate 61 and is fixed in the first support block 5. The pressing plate 61 presses down the fixing portion of the outer ring, so that the outer ring can be firmly fixed on the first support block 5. At the same time, the height of the abutment plate 7 can be adjusted by rotating the top rod 62, so that the fixing assembly 6 can stably press down and fix outer rings of different widths.

[0050] The implementation principle of a steam turbine outer ring processing device in the embodiment of the present application is: first place the outer ring on twelve first support blocks 5, then place twelve pressure plates 61 on the outer ring and the abutment plate 7, and finally use twelve first fixing members 63 to fix the twelve pressure plates 61, and then press down and fix the fixing part of the outer ring with the twelve pressure plates 61, so that the outer ring is fixed more firmly on the working ring table 3, thereby improving the processing accuracy of the bevel groove. When processing the bevel groove, the turntable 41, the horizontal moving part 42 and the vertical moving part 43 can drive the milling head 44 to move in multiple directions, and the milling head 44 mills the bevel groove on the inner wall of the outer ring processing part. Since the processing part of the outer ring is placed in the air, the workbench and the first support block 5 will not interfere with the processing of the bevel groove, thereby improving the processing efficiency of the bevel groove.

[0051] Example 2

[0052] Reference Figure 5 and Figure 6 The difference between this embodiment and the embodiment 1 is that a pad 8 is fixedly mounted on one end of the top wall of each first support block 5 close to the milling mechanism 4 by bolts, the fixed part of the outer ring is placed on the pad 8, and the end wall at the bottom of the outer ring in the axial direction completely covers the top wall of the pad 8. During the chute processing, the outer ring covers the pad 8, so that the debris will not splash onto the top wall of the pad 8. When one outer ring is processed and the second outer ring is placed, there is no debris on the top wall of the pad 8, so that the pad 8 does not need to be cleaned when the second outer ring is placed, thereby further improving the processing efficiency of the outer ring chute.

[0053] Reference Figure 6 and Figure 7 A second support block 15 is fixedly installed between each two adjacent first support blocks 5 on the working ring platform 3, and the second support block 15 is installed along the diameter direction of the working ring platform 3. A slide groove 16 is provided on the top wall of the second support block 15 along the diameter direction of the working ring platform 3, and a slider 17 is slidably installed in the second support block 15 along the length direction of the slide groove 16. Guide blocks 23 are fixedly installed on both sides of the bottom end of the slider 17, and guide grooves 22 connected to the slide groove 16 are provided on both sides of the width direction of the slide groove 16 in the second support block 15, and two guide blocks 23 are adapted and slidably installed in the two guide grooves 22 along the sliding direction of the slider 17. The guide block 23 cooperates with the guide groove 22 to guide and limit the movement of the slider 17, so that the slider 17 slides more stably in the slide groove 16.

[0054] The second support block 15 is located on the side of the slider 17 away from the milling mechanism 4 and is slidably mounted with a push block 18. A second elastic member 19 is mounted on the side wall of the push block 18 close to the slider 17, and one end of the second elastic member 19 away from the push block 18 abuts against the slider 17. In the present application, the second elastic member 19 can be selected as a spring, and the second elastic member 19 is always in an elastic contraction state. An adjustment rod 20 is threadedly penetrated in the second support block 15 in the horizontal direction, and the end of the adjustment rod 20 is rotatably connected to the push block 18. Rotating the adjustment rod 20 can drive the push block 18 to slide in the slide groove 16.

[0055] The top of the slider 17 extends upward to the outside of the slide groove 16, and a chamfer 21 is provided on the side of the top block of the slider 17 close to the milling mechanism 4. When the outer ring is placed on the first support block 5, the outer peripheral side of the bottom end wall of the outer ring first contacts the chamfer 21 of the slider 17. As the outer ring continues to descend, the outer ring pushes the slider 17 to move away from the milling mechanism 4 through the chamfer 21, and the slider 17 then squeezes the second elastic member 19. After the outer ring passes through the chamfer 21, the side of the slider 17 close to the milling mechanism 4 abuts against the outer peripheral side wall of the outer ring, and the twelve elastic members abut against the outer ring from the outer peripheral side of the outer ring through the twelve sliders 17 and locate the placement position of the outer ring, so that the placement position of the outer ring is more accurate.

[0056] Reference Figure 6 and Figure 8 The cushion block 8 has a sliding cavity 10, and the cushion block 8 is located in the sliding cavity 10 and is slidably mounted with a lifting plate 11 in the vertical direction. Four first elastic members 14 are mounted on the bottom wall of the lifting plate 11, and the bottom ends of the four first elastic members 14 abut against the bottom wall of the cushion block 8 located in the sliding cavity 10. In the present application, the first elastic member 14 can be selected as a spring, and the first elastic member 14 is always in an elastically contracted state, and the four first elastic members 14 lift the lifting plate 11 to the top of the sliding cavity 10.

[0057] Four balls 12 are rollingly embedded on the top wall of the lifting plate 11, and four through holes 13 communicating with the sliding cavity 10 are opened on the top wall of the cushion block 8. The four balls 12 are respectively located in the four through holes 13, and the top ends of the balls 12 extend to the outside of the cushion block 8 through the through holes 13, and the height of the top ends of the balls 12 is greater than the height of the top wall of the cushion block 8. When the outer ring is placed on the cushion block 8, the bottom wall of the outer ring abuts against the top wall of the balls 12, so that the outer ring can be moved and adjusted on the cushion block 8 easily.

[0058] Reference Figure 5 A vernier 9 is installed on the milling head 44. After the outer ring is placed on the pad 8, the cutter head on the milling head 44 is removed and replaced with the vernier 9. The horizontal moving part 42 and the vertical moving part 43 drive the vernier 9 to move, so that the measuring end of the vernier 9 abuts against the inner circumferential side wall of the outer ring, and the turntable 41 then drives the vernier 9 to rotate along the inner circumference of the outer ring, so as to detect the placement position of the outer ring.

[0059] Reference Figure 5 , Figure 6 and Figure 7 When the outer ring is placed on the cushion block 8, the sliders 17 on the twelve second support blocks 15 are pressed against the outer peripheral side wall of the outer ring. When the vernier 9 detects that the placement position of the outer ring is deviated, the adjusting rod 20 is rotated, and the adjusting rod 20 drives the push block 18 to move toward or away from the outer ring. The push block 18 slides in the slide groove 16 and acts on the second elastic member 19, so that the elastic force of the second elastic member 19 can be adjusted. The second elastic member 19 then adjusts the extrusion pressure on the outer ring through the slider 17. At this time, the outer ring can automatically move and adjust under the action of the ball 12, so as to facilitate the rapid adjustment of the placement position of the outer ring, making the placement of the outer ring more accurate, thereby improving the accuracy of the inclined groove processing.

[0060] When the outer ring is adjusted, the first fixing member 63 is rotated to press down and fix the outer ring. The outer ring presses down the lifting plate 11 through the ball 12, and the lifting plate 11 squeezes the first elastic member 14. At this time, the bottom wall of the outer ring abuts against the top wall of the cushion block 8, so that the outer ring is fixed more firmly. When the outer ring is processed and removed, the first elastic member 14 acts on the ball 12 through the lifting plate 11, and the ball 12 enters the through hole 13 again, so as to facilitate the movement and adjustment of the next outer ring.

[0061] A reinforcing plate 24 is placed on the first support block 5 and the second support block 15. The reinforcing plate 24 is located on the side of the push block 18 away from the outer ring. A second fixing member 25 is inserted in the middle of the reinforcing plate 24. In this application, the second fixing member 25 can be selected as a bolt, and the bottom end of the second fixing member 25 is threadedly fixed in the working ring platform 3. The second fixing member 25 fixes the reinforcing plate 24 on the first support block 5 and the second support block 15. The reinforcing plate 24 presses down and reinforces the first support block 5 and the second support block 15, thereby further improving the stability of the outer ring fixation. A chip cover 28 is installed on the second support block 15. The chip cover 28 is set on the slide 16 and prevents debris from entering the slide 16.

[0062] The implementation principle of Example 2 is as follows: when the outer ring is placed on the cushion block 8, the sliders 17 on the twelve second support blocks 15 are pressed against the outer peripheral side wall of the outer ring. When the vernier caliper 9 detects that the placement position of the outer ring is deviated, the adjusting rod 20 is rotated, and the adjusting rod 20 drives the push block 18 to move toward or away from the outer ring. The push block 18 slides in the slide groove 16 and acts on the second elastic member 19, so that the elastic force of the second elastic member 19 can be adjusted. The second elastic member 19 then adjusts the squeezing pressure on the outer ring through the slider 17. At this time, the outer ring can automatically move and adjust under the action of the ball 12, so as to facilitate the rapid adjustment of the placement position of the outer ring, so that the placement of the outer ring is more accurate, thereby improving the accuracy of the bevel groove processing.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steam turbine outer ring processing device, characterized in that: The invention comprises a base (1), wherein a milling mechanism (4) is arranged on the base (1), wherein the milling mechanism (4) comprises a turntable (41), a horizontal moving part (42), a vertical moving part (43) and a milling head (44), wherein the turntable (41) is rotatably arranged on the base (1), the horizontal moving part (42) is arranged at the middle of the top wall of the turntable (41), the vertical moving part (43) is arranged at the horizontal moving end of the horizontal moving part (42), and the milling head (44) is arranged at the vertical moving end of the vertical moving part (43); and a plurality of columns ( 2), a working ring platform (3) is arranged at the top of the plurality of columns (2), the working ring platform (3) is located on the outer peripheral side of the milling mechanism (4), a plurality of first support blocks (5) are fixedly arranged on the working ring platform (3) at equal intervals along its own circumference, the outer ring is placed on the plurality of first support blocks (5), the outer side of the end wall of the outer ring in the axial direction abuts against the top walls of the plurality of first support blocks (5), and the inner side of the end wall of the outer ring in the axial direction is suspended, and each of the first support blocks (5) is provided with a fixing component (6) for pressing the outer ring down and fixing it on the first support block (5);A cushion block (8) is arranged at one end of the top wall of the first support block (5) close to the milling mechanism (4), the outer ring is placed on the cushion block (8), and the bottom wall of the outer ring covers the top wall of the cushion block (8), and also includes a vernier (9) arranged on the milling head (44), the measuring end of the vernier (9) abuts against the inner peripheral side wall of the outer ring, a sliding cavity (10) is opened in the cushion block (8), a lifting plate (11) is slidably arranged in the sliding cavity (10) of the cushion block (8) along the vertical direction, and a rotatable embedded plate is arranged on the top wall of the lifting plate (11) There are a plurality of balls (12), a plurality of through holes (13) communicating with the sliding cavity (10) are formed on the top wall of the cushion block (8), the plurality of balls (12) are respectively located in the plurality of through holes (13), the top ends of the balls (12) extend above the top wall of the cushion block (8), and the bottom wall of the outer ring abuts against the top ends of the balls (12), a first elastic member (14) is installed in the sliding cavity (10) of the cushion block (8), one end of the first elastic member (14) abuts against the bottom wall of the cushion block (8) located in the sliding cavity (10), and the other end of the first elastic member (14) abuts against the bottom wall of the cushion block (8) located in the sliding cavity (10), and the other end of the first elastic member (14) abuts against the bottom wall of the cushion block (8) located in the sliding cavity (10). The end of the working ring platform (3) abuts against the bottom wall of the lifting plate (11) away from the ball bearing (12); a second support block (15) is fixedly arranged between each two adjacent first support blocks (5); a slide groove (16) is provided on the top wall of the second support block (15); a slider (17) is slidably arranged in the slide groove (16) along the diameter direction of the outer ring; the side wall of the slider (17) close to the milling mechanism (4) abuts against the outer peripheral side wall of the outer ring; the second support block (15) is located on the side of the slider (17) away from the outer ring A push block (18) is provided for sliding, the second support block (15) is provided with a second elastic member (19) in the slide groove (16), the two ends of the second elastic member (19) are respectively connected to the slider (17) and the push block (18), the second support block (15) is provided with an adjustment rod (20) through an internal thread, the end of the adjustment rod (20) is rotatably connected to the push block (18) and drives the push block (18) to slide along the diameter direction of the outer ring, and the top end of the side wall of the slider (17) close to the milling mechanism (4) is provided with a chamfer (21). ; 2. A steam turbine outer ring machining device according to claim 1, characterized in that: The fixing assembly (6) comprises a pressure plate (61), a push rod (62) and a first fixing member (63); the push rod (62) is arranged on the first support block (5) and is located on the side of the outer ring away from the milling mechanism (4); the two ends of the pressure plate (61) are respectively placed on the top walls of the outer ring and the push rod (62); the first fixing member (63) is penetrated in the middle of the pressure plate (61), and the bottom end of the first fixing member (63) is threadedly fixed in the working ring table (3).

3. A steam turbine outer ring machining device according to claim 2, characterized in that: The top end of the push rod (62) is provided with an abutment plate (7), the width of the abutment plate (7) is greater than the diameter of the push rod (62), the pressure plate (61) is placed on the abutment plate (7), the bottom end of the push rod (62) is threadedly arranged in the first support block (5), and the push rod (62) is adjustable in the vertical direction on the first support block (5).

4. The steam turbine outer ring machining device according to claim 1, characterized in that: The second support block (15) is provided with a guide groove (22) connected to the slide groove (16); the slide block (17) is provided with a guide block (23); the guide block (23) is slidably arranged in the guide groove (22) along the diameter direction of the outer ring.

5. The steam turbine outer ring machining device according to claim 1, characterized in that: A reinforcement plate (24) is placed on the first support block (5) and the second support block (15), a second fixing piece (25) is passed through the middle of the reinforcement plate (24), and the bottom end of the second fixing piece (25) is threadedly fixed in the working ring platform (3).

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