Positioning auxiliary device for valve machining

Abstract

The application relates to the technical field of valve machining, and particularly discloses a positioning auxiliary device for valve machining, which comprises a transfer case, the transfer case is provided with a groove accommodating valve parts, a locking mechanism is arranged in the transfer case, a clamp is arranged on the transfer case, the clamp is located on the inner wall of the groove, the valve parts are located between the locking mechanism and the clamp, a transfer mechanism is arranged in the transfer case, the transfer mechanism is symmetrically arranged with the locking mechanism, and the transfer mechanism is used for driving the clamp to rotate the valve parts in the groove. The application has the effect of improving the machining efficiency of the valve parts.

Description

Technical Field

[0001] This application relates to the technical field of valve processing, and in particular to a positioning auxiliary device for valve processing. Background Technology

[0002] Valves, as crucial control devices in fluid transport systems, are used in various sectors of the national economy, including petroleum, chemical, power, metallurgy, natural gas transportation, water conservancy, and urbanization. Some valves are also key components of major technical equipment. Their performance plays a decisive role in the safe and reliable operation of the equipment.

[0003] In related technologies, when machining valve parts, multiple end faces and channels of the valve parts need to be processed separately. Generally, the blank of the cast or forged valve part is placed in a machining tool, and the outer shape and internal cavity of the valve body and other parts are machined by turning; the flange face, mounting surface and connection parts of the valve are machined by milling on a milling machine; and holes such as threaded holes, through holes and blind holes are machined on a drilling machine by drilling and tapping.

[0004] In practical use, it has been found that the processing of valve parts involves different types of machine tools and multiple clamping and positioning operations, which are complicated and result in low processing efficiency. Summary of the Invention

[0005] To improve the processing efficiency of valve parts, this application provides a positioning auxiliary device for valve processing, which can quickly clamp valve parts and change the process position to complete multi-station processing of valve parts, thereby improving the processing efficiency of valve parts.

[0006] The positioning auxiliary device for valve processing provided in this application adopts the following technical solution: A positioning auxiliary device for valve processing includes a transfer box with a cavity for accommodating valve parts. A clamp is mounted on the transfer box and located on the inner wall of the cavity. The valve parts are located between a locking mechanism and the clamp. The transfer box contains a transfer mechanism and a locking mechanism, which are symmetrically arranged. The transfer mechanism drives the clamp to rotate the valve parts within the cavity. A locking hole is provided within the transfer box and communicates with the cavity. The diameter of the locking hole gradually decreases from the end furthest from the valve parts towards the end furthest from the valve parts. The locking mechanism includes a locking cover, a trapezoidal block, and an elastic element. The trapezoidal block is located within the locking hole, with its end passing through the locking hole and abutting against the surface of the valve parts. The locking cover is located on the inner wall of the locking hole at the end furthest from the valve parts. The elastic element is located between the locking cover and the trapezoidal block.

[0007] By adopting the above technical solution, the elastic element is a compression spring. The trapezoidal block, under the elastic action of the compression spring, abuts against the surface of the valve part, locking the valve part between the trapezoidal block and the fixture. The trapezoidal block, used in conjunction with the compression spring, can move within the locking hole, facilitating adaptation to valve parts of different sizes and improving the adaptability of this structure. The valve part is first placed on the fixture, and then pressure is applied to the valve part through the trapezoidal block, fixing the valve part between the fixture and the trapezoidal block. This reduces shaking and displacement of the valve part during the operation of the transfer case, effectively improving the stability of the valve part. The transfer mechanism drives the fixture to rotate the valve part within the cavity, facilitating adjustment of the valve part's position within the cavity, enabling multi-station machining of the valve part, reducing clamping errors, and effectively improving the machining efficiency of the valve part.

[0008] Optionally, the locking cover is threaded with an abutment bolt, the end of which passes through an elastic element and abuts against the trapezoidal block.

[0009] By adopting the above technical solution, when the trapezoidal block abuts against the surface of the valve part under the elastic force of the compression spring, the valve part will generate a counterforce on the first driving component, causing the trapezoidal block to move away from the valve part. By rotating the abutting bolt, the abutting bolt abuts against the head of the trapezoidal block, which can adjust the height of the trapezoidal block, reduce the displacement of the trapezoidal block, and further improve the stability of the valve part locked in the groove cavity.

[0010] Optionally, a pressure block is rotatably connected to the end of the trapezoidal block.

[0011] By adopting the above technical solution, when the end of the trapezoidal block abuts against the valve part, the pressure block can automatically adjust its angle according to the rotation state of the valve part. By abutting against the valve part with the pressure block, the friction between the end of the trapezoidal block and the surface of the valve part is reduced, effectively reducing mechanical wear.

[0012] Optionally, the transfer case has a rotating cavity, and a rotating shaft is fixedly provided on the side of the clamp away from the valve parts. The rotating shaft extends into the rotating cavity, and a main shaft head is coaxially fixed at the end of the rotating shaft away from the clamp. The main shaft head is configured as a polygonal cylinder, and the transfer mechanism drives the edge of the main shaft head to rotate.

[0013] By adopting the above technical solution, the transfer mechanism directly acts on the edge of the spindle head, thereby causing the spindle head to rotate, which in turn enables the fixture to drive the rotation of valve parts, shortens the station switching time, and improves the processing efficiency of valve parts.

[0014] Optionally, the splitting mechanism includes a first driving member and a second driving member. Both the first and second driving members are fixed on the inner wall of the rotating cavity. Both the first and second driving members are perpendicular to the rotating shaft and are set at an angle. When the telescopic rod of the first driving member abuts against the side of the spindle head, the indexing rotation of the spindle head is realized by driving the telescopic rod of the second driving member to push the edge of the spindle head and driving the telescopic cylinder of the first driving member to retract.

[0015] By adopting the above technical solution, the telescopic rod of the first driving component first abuts against the side of the spindle head, providing support and reducing spindle head rotation. Then, it drives the telescopic rod of the second driving component to push the edge of the spindle head. Simultaneously, it drives the telescopic rod of the first driving component to retract, causing the spindle head to rotate, and the telescopic rod of the second driving component abuts against the side of the spindle head. The two work together to convert the telescopic motion into the rotational motion of the spindle head, achieving indexing rotation of the spindle head. This facilitates multi-station processing of valve parts, further improving the processing accuracy and efficiency of the valves.

[0016] Optionally, the system includes a frame, with the transfer case rotatably mounted on one side of the frame. A fourth drive component is mounted on the side of the frame opposite to the transfer case. The output shaft of the fourth drive component passes through the frame and is connected to a positioning plate. Multiple connecting bolts are vertically mounted on the positioning plate. These connecting bolts pass through the transfer case and are threadedly fixed to it. A positioning bolt passes through the transfer case and is threadedly fixed to the positioning plate.

[0017] By adopting the above technical solution, multiple connecting bolts and positioning bolts work together to fix the transfer case to the frame. When the fourth drive component drives the transfer case to rotate as a whole, this connection method can effectively reduce the displacement or deformation of the transfer case and improve the stability of the transfer case during operation.

[0018] Optionally, the transfer case has a groove on the side near the frame that is adapted to the positioning plate. The positioning plate is located in the groove, and multiple connecting bolts pass through the groove and are threadedly fixed to the transfer case.

[0019] By adopting the above technical solution, when installing the positioning plate, the positioning plate is embedded in the groove to achieve rapid positioning of the transfer case and the frame, reducing the calibration time during installation and effectively improving the installation efficiency and positioning accuracy of the transfer case.

[0020] Optionally, the transfer case is provided with multiple weight reduction holes.

[0021] By adopting the above technical solution, multiple weight reduction holes reduce the amount of material used and the weight of the transfer case, thereby reducing material costs and improving the operating efficiency of the transfer case.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The elastic element is a compression spring. Under the elastic action of the compression spring, the trapezoidal block abuts against the surface of the valve part, locking the valve part between the trapezoidal block and the fixture. The trapezoidal block, used in conjunction with the compression spring, can move within the locking hole, facilitating the adaptation of valve parts of different sizes and improving the adaptability of this structure. The valve part is first placed on the fixture, and then pressure is applied to the valve part through the trapezoidal block, fixing the valve part between the fixture and the trapezoidal block, reducing shaking and displacement of the valve part during the operation of the transfer case, effectively improving the stability of the valve part. The transfer mechanism drives the fixture to rotate the valve part within the cavity, facilitating the adjustment of the valve part's position within the cavity, enabling multi-station machining of the valve part, reducing clamping errors, and effectively improving the machining efficiency of the valve part. 2. When the trapezoidal block abuts against the surface of the valve part under the elastic force of the compression spring, the valve part will generate a counterforce on the first driving component, causing the trapezoidal block to move away from the valve part. By rotating the abutting bolt, the abutting bolt abuts against the head of the trapezoidal block, which can adjust the height of the trapezoidal block, reduce the displacement of the trapezoidal block, and further improve the stability of the valve part locked in the groove cavity. 3. The telescopic rod of the first drive component first abuts against the side of the spindle head, providing support and reducing the rotation of the spindle head. Then, it drives the telescopic rod of the second drive component to push the edge of the spindle head. At the same time, it drives the telescopic rod of the first drive component to retract, causing the spindle head to rotate. The telescopic rod of the second drive component and the side of the spindle head abut against work together to convert the telescopic motion into the rotational motion of the spindle head, realizing the indexing rotation of the spindle head. This facilitates multi-station processing of valve parts and further improves the processing accuracy and efficiency of the valve. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the positioning auxiliary device for valve processing according to Embodiment 1 of this application; Figure 2 This is a cross-sectional view of the locking mechanism of the positioning auxiliary device for valve processing according to Embodiment 1 of this application; Figure 3 This is a cross-sectional view of the valve machining positioning auxiliary device according to Embodiment 1 of this application, showing the transfer mechanism; Figure 4 This is an exploded view of the positioning auxiliary device for valve processing according to Embodiment 1 of this application; Figure 5 Embodiment 2 of this application shows a structural schematic diagram of the clamp and the lead screw body.

[0024] Reference numerals: 1. Transfer case; 2. Groove; 3. Locking mechanism; 4. Fixture; 41. First clamping member; 42. Second clamping member; 5. Valve component; 6. Transfer mechanism; 61. First driving component; 62. Second driving component; 7. Locking hole; 71. Locking cover; 72. Trapezoidal block; 73. Elastic component; 8. Abutment bolt; 9. Pressure block; 10. Rotating cavity; 11. Rotating shaft; 12. Main spindle head; 13. Frame; 14. Fourth driving component; 15. Positioning plate; 16. Connecting bolt; 17. Positioning bolt; 18. Groove; 19. Weight reduction hole; 20. First bearing; 21. Second bearing; 22. Moving groove; 23. Adjusting rod; 24. Locking bolt; 25. Mounting base; 26. Two-way lead screw; 27. Left nut; 28. Right nut. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] Example 1: Embodiment 1 of this application discloses a positioning auxiliary device for valve processing, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a frame 13, on which a transfer case 1 is rotatably mounted. A cavity 2 is formed on the side of the transfer case 1 away from the frame 13, for accommodating valve parts 5. A locking mechanism 3 and a transfer mechanism 6 are symmetrically arranged within the transfer case 1, located at opposite ends of the cavity 2. A clamp 4 is mounted on the transfer case 1 to hold the valve parts 5. The clamp 4 is located on the inner wall of the cavity 2 and is fixedly connected to the transfer mechanism 6. First, the locking mechanism 3 locks the valve parts 5 onto the clamp 4. Then, the transfer mechanism 6 drives the clamp 4 to rotate, enabling the valve parts 5 to rotate within the transfer case 1. This facilitates the processing of the valve parts 5, eliminating the need for frequent loading, unloading, and re-clamping during processing, effectively improving the processing efficiency of the valve parts 5.

[0027] Reference Figure 2The transfer case 1 has a locking hole 7, which communicates with the cavity 2. The locking hole 7 is stepped, and its diameter gradually decreases from the end furthest from the valve part 5 towards the end furthest from the valve part 5. The locking mechanism 3 includes a locking cover 71, a trapezoidal block 72, and an elastic element 73, all of which are located within the locking hole 7. One end of the locking cover 71 is hinged to the inner wall of the locking hole 7 furthest from the valve part 5, and the locking cover 71 is used to close the locking hole 7. The elastic element 73 is located between the locking cover 71 and the trapezoidal block 72. In this embodiment, the elastic element 73 is a compression spring. The compression spring is always in a compressed state. Under the force of the compression spring, the end of the trapezoidal block 72 passes through the locking hole 7 and abuts against the surface of the valve part 5, effectively fixing the valve part 5 between the clamp 4 and the trapezoidal block 72. In other embodiments, a hydraulic cylinder can be used to press down and abut against the valve part 5. The trapezoidal block 72 works in conjunction with the compression spring to facilitate adjustment of the sliding depth of the trapezoidal block 72 within the locking hole 7, enabling it to lock valve parts 5 of different sizes.

[0028] Reference Figure 2 A locking cover 71 is threaded with an abutment bolt 8, the end of which passes through a compression spring and abuts against the head of a trapezoidal block 72. When locking valve parts 5 of different sizes, the abutment bolt 8 is screwed onto the trapezoidal block 72, fixing the trapezoidal block 72 between the abutment bolt 8 and the valve part 5, reducing movement of the trapezoidal block 72 and effectively improving the stability of the valve part 5. A locking bolt 24 is threaded through the end of the locking cover 71 away from the hinge point, passing through the locking hole 7 and then threaded onto the inner wall of the locking hole 7, thus fixing the locking cover 71 to the inner wall of the locking hole 7.

[0029] Reference Figure 2 A movable groove 22 is provided on the side of the transfer case 1 away from the transfer mechanism 6. The movable groove 22 is opened along the vertical direction of the movement of the trapezoidal block 72 and communicates with the locking hole 7. An adjusting rod 23 is fixed to the head of the trapezoidal block 72. The adjusting rod 23 is perpendicular to the movement direction of the trapezoidal block 72. The end of the adjusting rod 23 away from the trapezoidal block 72 passes through the movable groove 22 and is located outside the transfer case 1. By sliding the height of the adjusting rod 23, the height of the trapezoidal block 72 in the locking hole 7 can be easily adjusted, which is beneficial for adapting to valve parts 5 of different specifications.

[0030] Reference Figure 2 The end of the trapezoidal block 72 is rotatably connected to a pressure block 9 via a first bearing 20. The pressure block 9 is located between the trapezoidal block 72 and the valve component 5. The pressure block 9 can rotate with the valve component 5, reducing direct friction between the trapezoidal block 72 and the valve component 5, effectively protecting the surface quality of the valve component 5, and extending the service life of the trapezoidal block 72.

[0031] Reference Figure 3The transfer mechanism 6 includes a first driving member 61 and a second driving member 62. In this embodiment, both the first driving member 61 and the second driving member 62 are hydraulic cylinders. A rotating cavity 10 is provided inside the transfer case 1, and the rotating cavity 10 is arranged opposite to the locking hole 7. The first driving member 61 and the second driving member 62 are both fixed to the cavity wall of the rotating cavity 10. A rotating shaft 11 is fixed to one end of the clamp 4 away from the trapezoidal block 72. The rotating shaft 11 passes through the transfer case 1 and enters the rotating cavity 10. The first driving member 61 and the second driving member 62 are both perpendicular to the rotating shaft 11. A second bearing 21 is sleeved on the rotating shaft 11. A main spindle head 12 is provided at one end of the rotating shaft 11 away from the clamp 4. The second bearing 21 is located between the clamp 4 and the main spindle head 12. The main spindle head 12 is a polygonal prism. In this embodiment, the main spindle head 12 is a cube. The rotating shaft 11 passes through the main spindle head 12 and is coaxially fixed with the main spindle head 12.

[0032] The telescopic rod of the first drive component 61 forms a 45-degree angle with one side of the spindle head 12. First, the first drive component 61 is activated, and its telescopic rod pushes the spindle head 12 to rotate 45 degrees. At this point, the telescopic rod of the first drive component 61 aligns with one side of the spindle head 12 and locks the angle of the spindle head 12. Then, the telescopic rod of the first drive component 61 is retracted, and the telescopic rod of the second drive component 62 forms a 45-degree angle with the spindle head 12 at the 45-degree rotation position. Then, the second drive component 62 is activated... The telescopic rod of the second drive member 62 pushes the edge of the spindle head 12, causing the spindle head 12 to rotate 45 degrees. At this time, the spindle head 12 has rotated 90 degrees. The telescopic rod of the second drive member 62 matches and locks the angle of the spindle head 12 with the other side of the spindle head 12 in the form of a wedge pin. Through the linear motion between the first drive member 61 and the second drive member 62, the indexing rotation motion of the valve part 5 is realized through multiple cycles, which facilitates the multi-station processing of the valve part 5 and effectively improves the processing accuracy and efficiency of the valve part 5.

[0033] Reference Figure 4 A fourth driving component 14 is provided on the side of the frame 13 away from the transfer case 1. In this embodiment, the fourth driving component 14 is a motor. The output shaft of the motor passes through the frame 13 and is connected to a positioning plate 15. A groove 18 adapted to the structure of the positioning plate 15 is provided on the side of the transfer case 1 near the frame 13. The positioning plate 15 is located in the groove 18, which facilitates the positioning of the transfer case 1 on the frame 13. Four connecting bolts 16 are vertically fixed on the positioning plate 15. The four connecting bolts 16 pass through the inner wall of the groove 18 and are threaded to the transfer case 1. A positioning bolt 17 is provided on the side of the transfer case 1 near the frame 13. The positioning bolt 17 passes through the positioning plate 15 and is threaded to the positioning plate 15, thus fixing the transfer case 1 to the positioning plate 15. When the motor is started, the positioning plate 15 is driven to rotate through the output shaft of the motor, thereby realizing the overall rotation of the transfer case 1.

[0034] Reference Figure 4 The transfer case 1 has multiple weight reduction holes 19, which can reduce the amount of material used in the transfer case 1, significantly reduce the weight of the transfer case 1, and also reduce the material cost of the transfer case 1.

[0035] The implementation principle of the positioning auxiliary device for valve processing disclosed in Embodiment 1 of this application is as follows: First, the height of the trapezoidal block 72 in the locking hole 7 is adjusted by moving the adjusting rod 23. Then, the valve part 5 is placed between the trapezoidal block 72 and the clamp 4, so that the end of the trapezoidal block 72 abuts against the surface of the valve part 5. Then, the abutment bolt 8 is tightened to fix the trapezoidal block 72. In the initial state, the telescopic rod of the first driving member 61 abuts against one side of the spindle head 12, and then the second driving member 62 is driven, which in turn drives the first driving member 61. The telescopic rod retracts, and the telescopic rod of the second drive member 62 pushes the edge of the spindle head 12 to rotate 45 degrees. The telescopic rod of the second drive member 62 also abuts against the other side of the spindle head 12. After multiple cycles, the spindle head 12 drives the valve part 5 to rotate 45 degrees, 90 degrees, 135 degrees, 180 degrees, etc. through the clamp 4. This allows for multi-station processing of the valve part 5. Compared with traditional processing methods, it eliminates the need for frequent loading, unloading, and re-clamping, reducing positioning errors and effectively improving the processing efficiency and accuracy of the valve part 5.

[0036] Example 2: Embodiment 2 of this application discloses a positioning auxiliary device for valve processing, such as... Figure 5 The difference between Embodiment 2 and Embodiment 1 is that the fixture 4 has a mounting base 25 fixed at its bottom, and the rotating shaft 11 is vertically fixed to the bottom of the mounting base 25. The axis of the rotating shaft 11 and the axis of the trapezoidal block 72 are both on the same straight line. The end of the rotating shaft 11 away from the mounting base 25 passes through the transfer case 1 and extends into the rotating cavity 10. A bidirectional lead screw 26 is rotatably connected to the mounting base 25. The bidirectional lead screw 26 is perpendicular to the rotating shaft 11. A left nut 27 and a right nut 28 are provided on the bidirectional lead screw 26. The left nut 27 and the right nut 28 are both sleeved on both ends of the bidirectional lead screw 26. The bidirectional lead screw 26 has a left threaded section, a threadless transition section and a right threaded section in sequence along the axial direction. The left threaded section is a left-hand thread and the right threaded section is a right-hand thread. The left nut 27 is threadedly engaged with the left threaded section and the right nut 28 is threadedly engaged with the right threaded section.

[0037] The clamp 4 includes a first clamp 41 and a second clamp 42, which are arranged opposite to each other. The first clamp 41 is fixed to the top of the left nut 27, and the second clamp 42 is fixed to the top of the right nut 28. By rotating the bidirectional lead screw 26, the first clamp 4 and the second clamp 4 can be moved closer or further apart, which facilitates the adjustment of the distance between the first clamp 41 and the second clamp 42 to clamp the valve part 5, which is beneficial for adapting to valve parts 5 of different specifications.

[0038] The implementation principle of the positioning auxiliary device for valve processing disclosed in Embodiment 2 of this application is as follows: After placing the valve part 5 between the first clamp 41 and the second clamp 42, the bidirectional lead screw 26 is rotated so that the first clamp 41 and the second clamp 42 move toward or away from the valve part 5, thereby clamping the bottom of the valve part 5. Then, the trapezoidal block 72 is driven to press down the top of the valve part 5 from top to bottom, realizing the longitudinal positioning of the valve part 5, which facilitates the processing operation of the valve part 5. The distance between the first clamp 41 and the second clamp 42 can be adjusted by the bidirectional lead screw 26 to clamp the valve part 5, thereby adapting to valve parts 5 of different specifications and effectively improving the adaptability of the structure.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A positioning aid for valve machining, characterized by: The device includes a transfer case (1), which has a cavity (2) for accommodating a valve part (5). A clamp (4) is provided on the transfer case (1) and is located on the inner wall of the cavity (2). A transfer mechanism (6) and a locking mechanism (3) are provided inside the transfer case (1). The transfer mechanism (6) and the locking mechanism (3) are symmetrically arranged. The valve part (5) is located between the locking mechanism (3) and the clamp (4). The transfer mechanism (6) is used to drive the clamp (4) to rotate the valve part (5) in the cavity (2). A locking hole (7) is provided inside the transfer case (1) and is located on the valve part (5). On the side away from the clamp (4), the locking hole (7) is connected to the groove (2). The diameter of the locking hole (7) gradually decreases from the end hole away from the valve part (5) to the end hole closer to the valve part (5). The locking mechanism (3) includes a locking cover (71), a trapezoidal block (72) and an elastic element (73). The head of the trapezoidal block (72) is located inside the locking hole (7). The end of the trapezoidal block (72) passes through the locking hole (7) and abuts against the surface of the valve part (5). The locking cover (71) is set on the inner wall of the end of the locking hole (7) away from the valve part (5). The elastic element (73) is located between the locking cover (71) and the trapezoidal block (72).

2. The positioning auxiliary device for valve processing according to claim 1, characterized in that, The locking cover (71) is threaded with an abutment bolt (8), the end of which passes through the elastic element (73) and abuts against the head of the trapezoidal block (72).

3. The positioning auxiliary device for valve processing according to claim 1, characterized in that, The trapezoidal block (72) is rotatably connected to a pressure block (9) at its end.

4. The positioning auxiliary device for valve processing according to claim 1, characterized in that, The transfer box (1) has a rotating cavity (10). The clamp (4) has a rotating shaft (11) on the side away from the valve part (5). The rotating shaft (11) and the axis of the trapezoidal block (72) are on the same straight line. The rotating shaft (11) extends into the rotating cavity (10). The end of the rotating shaft (11) away from the clamp (4) is coaxially fixed with a main shaft head (12). The main shaft head (12) is a polygonal prism. The transfer mechanism (6) drives the edge of the main shaft head (12) to realize the rotation of the main shaft head (12).

5. The positioning auxiliary device for valve processing according to claim 4, characterized in that, The splitting mechanism (6) includes a first driving member (61) and a second driving member (62). The first driving member (61) and the second driving member (62) are both fixed on the inner wall of the rotating cavity (10). The first driving member (61) and the second driving member (62) are both arranged perpendicularly to the rotating shaft (11). The first driving member (61) and the second driving member (62) are arranged at an angle. When the telescopic rod of the first driving member (61) abuts against the side of the main shaft rotating head (12), the telescopic rod of the second driving member (62) is driven to push the edge of the main shaft rotating head (12), and the telescopic cylinder of the first driving member (61) is driven to retract, thereby realizing the indexing rotation of the main shaft rotating head (12).

6. The positioning auxiliary device for valve processing according to claim 1, characterized in that, It also includes a frame (13), the transfer case (1) is rotatably mounted on one side of the frame (13), and a fourth drive member (14) is provided on the side of the frame (13) away from the transfer case (1). The output shaft of the fourth drive member (14) passes through the frame (13) and is connected to a positioning plate (15). Multiple connecting bolts (16) are vertically arranged on the positioning plate (15). The multiple connecting bolts (16) pass through the transfer case (1) and are threaded to the transfer case (1). A positioning bolt (17) passes through the transfer case (1) and is threaded to the positioning plate (15).

7. The positioning auxiliary device for valve processing according to claim 6, characterized in that, The transfer case (1) has a groove (18) on the side near the frame (13) that is adapted to the positioning plate (15). The positioning plate (15) is located in the groove (18), and multiple connecting bolts (16) pass through the inner wall of the groove (18) and are threaded to the transfer case (1).

8. The positioning auxiliary device for valve processing according to claim 1, characterized in that, The transfer case (1) has multiple weight reduction holes (19).

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