A large mixed flow pump rotor body spherical intelligent turning device

Abstract

This invention discloses an intelligent turning device for the spherical surface of a large mixed-flow pump rotor, relating to the field of mixed-flow pump rotor turning technology. It includes a spindle and a center pin assembly, and further includes a chuck assembly and a port positioning assembly. The port positioning assembly includes a first limiting assembly located at the first port of the hub, a second limiting assembly located at the second port of the hub, and a docking assembly. By setting the first and second limiting assemblies, the first and second ports of the hub are positioned. Supported by the central shaft, the docking assembly, and the central clamping assembly, the hub and spindle are aligned on the same axis. The tapered hole on the plug, in cooperation with the center pin assembly, provides a center pin attachment point for the center pin assembly to support the hub, facilitating support of the hub and ensuring stable coaxial rotation of the hub and spindle, thereby improving the accuracy of the spherical turning of the hub.

Description

Technical Field

[0001] This invention relates to the field of machining technology for mixed-flow pump rotors, specifically to an intelligent turning device for the spherical surface of a large mixed-flow pump rotor. Background Technology

[0002] The large mixed-flow pump adopts a spherical hub design, specifically an adjustable blade hub body. The hub body integrates a hydraulic adjustment mechanism to support dynamic adjustment of the blade angle.

[0003] The spherical surface of the adjustable blade hub needs to serve as a precision positioning base for the blade pivot installation. After machining, it can ensure the geometric consistency of multiple blade mounting slots. However, the two ends of the hub are open, which makes it difficult to cooperate and dock with the ejector pin assembly during the machining positioning process. This increases the difficulty of coaxial rotation drive between the hub and the spindle during the machining process, thus affecting the accuracy of the machining.

[0004] Based on this, the present invention designs an intelligent turning device for the spherical surface of a large mixed-flow pump rotor to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent turning device for the spherical surface of a large mixed-flow pump rotor, in order to solve the problem mentioned in the background art that the two ends of the hub body are open, which makes it inconvenient to cooperate and dock with the ejector assembly during the turning and positioning process. This increases the difficulty of coaxial rotation drive between the hub body and the spindle during the turning process, thus affecting the accuracy of the turning process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large mixed-flow pump rotor spherical intelligent turning device, comprising a spindle and a center assembly, and further comprising:

[0007] A chuck assembly, comprising a chuck body and three movable jaws, the three movable jaws being used to clamp and position the outer edge of the first port of the hub body, the chuck body being fixedly mounted on the end face of the spindle;

[0008] A port positioning component, comprising a first limiting component located at a first port of the hub body, a second limiting component located at a second port of the hub body, and a docking component;

[0009] The first limiting component includes a circular limiting plate, which is fixedly connected to the end face of the chuck body, and a central shaft is fixedly connected to the end face of the circular limiting plate;

[0010] The second limiting component includes a plug, the inner end of which is provided with a centering clamping component, which is used to center and support the plug in the second port of the hub body. The outer end face of the plug is provided with a tapered hole. The docking component is provided between the plug and the central shaft, and the docking component is used to dock the plug and the central shaft.

[0011] As a technical solution of the present invention, the docking assembly includes a docking plug and a mating interface. The docking plug is fixedly connected to the end face of the central shaft, the mating interface is opened at the center of the end face of the plug, and the docking plug is inserted into the mating interface.

[0012] As a technical solution of the present invention, the docking assembly further includes a first sleeve and a second sleeve. The first sleeve is fixedly connected to the end face of the plug, and the second sleeve is fixedly sleeved on the surface of the central shaft. The outer surface of the first sleeve is provided with a first thread, and the inner wall of the second sleeve is provided with a second thread. The second sleeve is threadedly sleeved on the surface of the first sleeve.

[0013] As a technical solution of the present invention, the central clamping component includes three insertion slots and an annular slot. The three insertion slots are opened on the edge of the insertion plug and are arranged in an annular array with reference to the insertion plug. An inner clamping claw is slidably arranged in each of the three insertion slots. A wedge block is fixedly connected to the inner end of the inner clamping claw. A first support spring is fixedly connected between the wedge block and the inner wall of the insertion slot.

[0014] The annular groove is formed on the end face of the plug, and the annular groove communicates with the three plug slots. An annular body is slidably disposed in the annular groove, and the annular body contacts the inclined surfaces of the three wedge blocks.

[0015] As a technical solution of the present invention, three elastic support members are provided between the annular body and the annular groove. The elastic support members include three connection ports, which are opened on the end face of the annular body. Three connecting rods are inserted into the annular body. The three connecting rods pass through the three connection ports and are threadedly connected to the inner wall of the annular groove. A second support spring is provided in each of the three connection ports, and the end of the second support spring is fixedly connected to the inner wall of the connection port.

[0016] As a technical solution of the present invention, three threaded holes are provided on the inner wall of the annular groove, and the three threaded holes are threadedly connected to the ends of the three connecting rods.

[0017] As a technical solution of the present invention, an annular limiting body is fixedly connected to the surface of the plug, and the annular limiting body contacts the port edge of the second port of the hub body.

[0018] As a technical solution of the present invention, an annular knob is fixedly connected to one end of the plug away from the central axis, and the annular knob has an inner ring surface and an outer flange surface.

[0019] As a technical solution of the present invention, the ejector pin assembly includes a movable base, on which a support shaft is fixedly mounted. An ejector pin body is fixedly connected to the end of the support shaft, and the ejector pin body is mated within a tapered hole. An ultrasonic ranging sensor is fixedly connected to the edge of the end of the support shaft. The ultrasonic ranging sensor is used to measure the distance between the ultrasonic ranging sensor and the inner ring surface of the annular knob.

[0020] As a technical solution of the present invention, it also includes a drive base, on which a first motor is fixedly mounted. The output shaft of the first motor is fixedly connected to the end of the main shaft, and the main shaft is rotatably connected to the drive base.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The first and second limiting components are used to position the first and second ports of the wheel hub body, clamping the wheel hub body between the circular limiting plate and the plug. The clamping of three movable jaws ensures the synchronization of the wheel hub body's rotation with the spindle. Furthermore, the support of the central shaft, the docking component, and the central clamping component ensures that the wheel hub body and the spindle are on the same axis. The tapered hole on the plug, in cooperation with the ejector assembly, provides an attachment point for the ejector assembly to support the wheel hub body, facilitating its support and ensuring stable coaxial rotation between the wheel hub body and the spindle. This, in turn, helps ensure the accuracy of the spherical turning of the wheel hub body.

[0023] 2. By connecting the plug to the interface, the plug is aligned with the central shaft, thus ensuring that the plug and the main shaft are on the same axis, providing favorable conditions for coaxial positioning of the hub body later.

[0024] 3. During the process of the first set of body threads connecting to the inside of the second set of body, the second set of body will compress the annular body, and the annular body will compress the inclined surfaces of the three wedge blocks. Under compression, the wedge blocks move in the insertion groove, and the wedge blocks synchronously drive the inner jaws to move until the three inner jaws clamp the inner wall of the second port of the hub body. While clamping the second port of the hub body, the insertion groove is centered inside the second port of the hub body, which helps to ensure that the hub body, the insertion plug, the central shaft and the spindle are on the same axis, providing favorable conditions for subsequent turning and ensuring accurate turning of the spherical surface of the hub body.

[0025] 4. By setting the relative positions of the annular limiting body and the circular limiting plate, the hub body is clamped between the annular limiting body and the circular limiting plate after the plug is connected to the central shaft. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0027] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0028] Figure 3 This is a cross-sectional view of the second limiting component and the hub body of the present invention;

[0029] Figure 4 for Figure 3 Enlarged view of section B;

[0030] Figure 5 This is a cross-sectional view of the chuck assembly and the first limiting assembly of the present invention;

[0031] Figure 6 for Figure 5 Enlarged view of section C;

[0032] Figure 7 This is a schematic diagram of the drive seat of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the ring-shaped body of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the annular body and inner gripper of the present invention.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1. Main spindle, 2. Chuck body, 3. Movable jaw, 4. Hub body, 401 first port, 402 second port, 5. Circular limiting plate, 6. Central shaft, 7. Insert plug, 8. Tapered hole, 9. Connecting plug, 10. Connecting interface, 11. First sleeve, 1101 first thread, 12. Second sleeve, 1201 second thread, 13. Inserting groove, 14. Circular groove, 15. Inner jaw, 16. Wedge block, 17. First support spring, 18. Circular body, 19. Connecting port, 20. Connecting rod, 21. Second support spring, 22. Threaded hole, 23. Circular limiting body, 24. Circular knob, 24. Inner ring surface, 2401, Outer flange surface, 2402, Moving seat, 25. Support shaft, 26. Ejector pin body, 27. Ultrasonic ranging sensor, 28. Support rail, 29. Second motor, 30. Threaded rod, 31. Drive seat, 32. First motor, 33. Detailed Implementation

[0037] Please see Figures 1 to 9 The present invention provides a technical solution: a large mixed-flow pump rotor spherical intelligent turning device, including a spindle 1 and an ejector pin assembly, and further comprising:

[0038] The chuck assembly includes a chuck body 2 and three movable jaws 3. The three movable jaws 3 are used to clamp and position the outer edge of the first port 401 of the hub body 4. The chuck body 2 is fixedly installed on the end face of the spindle 1.

[0039] The port positioning component includes a first limiting component located at the first port 401 of the hub body 4, a second limiting component located at the second port 402 of the hub body 4, and a docking component.

[0040] The first limiting component includes a circular limiting plate 5, which is fixedly connected to the end face of the chuck body 2, and a central shaft 6 is fixedly connected to the end face of the circular limiting plate 5.

[0041] The second limiting component includes a plug 7, and a centering clamping component is provided at the inner end of the plug 7. The centering clamping component is used to center the plug 7 in the second port 402 of the hub body 4. A tapered hole 8 is provided on the outer end face of the plug 7. A docking component is provided between the plug 7 and the central shaft 6. The docking component is used to dock the plug 7 and the central shaft 6.

[0042] Specifically, the three movable jaws 3 are movably inserted into the end face of the chuck body 2 and are driven by the jaw drive component set on the chuck body 2. The jaw drive component is existing technology and will not be described in detail.

[0043] It should be understood that the specific implementation method is as follows:

[0044] Step 1: The movable claws 3 move closer together to form a limiting space, thereby limiting the outer edge of the first port 401 of the wheel hub body 4.

[0045] Step 2: Insert the plug 7 into the second port 402 of the hub body 4. The plug 7 is coaxially connected to the central shaft 6 through the docking assembly. During the process of the docking assembly coaxially connecting the plug 7 to the central shaft 6, the centering clamping assembly clamps the inner wall of the second port 402, so that the plug 7 is centered inside the second port 402.

[0046] Step 3: Press the conical hole 8 of the plug 7 with the pin assembly until the first port 401 of the wheel hub 4 is close to the circular limiting plate 5, and clamp the outer edge of the first port 401 of the wheel hub 4 with the three movable claws 3.

[0047] Based on the above principles, the first and second limiting components are used to position the first port 401 and the second port 402 of the hub body 4, and clamp the hub body 4 between the circular limiting plate 5 and the plug 7. With the clamping of the three movable claws 3, the synchronous rotation of the hub body 4 and the spindle 1 is ensured. Furthermore, the hub body 4 and the spindle 1 are placed on the same axis by the support of the central shaft 6, the docking component and the centering clamping component. This helps to ensure that the hub body 4 and the spindle 1 rotate coaxially, which in turn helps to ensure the accuracy of the spherical turning of the hub body 4.

[0048] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, in one embodiment, the docking assembly includes a docking plug 9 and a docking interface 10. The docking plug 9 is fixedly connected to the end face of the central shaft 6, and the docking interface 10 is located at the center of the end face of the plug 7. The docking plug 9 is inserted into the docking interface 10. It should be understood that by inserting the docking plug 9 into the docking interface 10, the plug 7 is coaxially aligned with the central shaft 6, thereby ensuring that the plug 7 and the main shaft 1 are on the same axis, providing favorable conditions for the subsequent coaxial positioning of the hub body 4.

[0049] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, in one embodiment, the docking assembly further includes a first sleeve 11 and a second sleeve 12. The first sleeve 11 is fixedly connected to the end face of the plug 7, and the second sleeve 12 is fixedly sleeved on the surface of the central shaft 6. The outer surface of the first sleeve 11 is provided with a first thread 1101, and the inner wall of the second sleeve 12 is provided with a second thread 1201. The second sleeve 12 is threadedly sleeved on the surface of the first sleeve 11. It should be understood that after the docking plug 9 is connected to the interface 10, rotating the plug 7 will cause the first sleeve 11 to rotate at the port of the second sleeve 12. Under the threaded connection of the first thread 1101 and the second thread 1201, the first sleeve 11 is threadedly connected to the inside of the second sleeve 12, realizing threaded connection, thereby stably connecting the plug 7 to the central shaft 6. During the threaded connection process, the docking plug 9 connecting to the interface 10 provides favorable conditions for the threaded connection of the first sleeve 11 and the second sleeve 12.

[0050] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, in one embodiment, the centering clamping assembly includes three insertion slots 13 and an annular groove 14. The three insertion slots 13 are opened on the edge of the insertion plug 7 and are arranged in an annular array with reference to the insertion plug 7. An inner clamping claw 15 is slidably disposed in each of the three insertion slots 13. A wedge block 16 is fixedly connected to the inner end of the inner clamping claw 15. A first support spring 17 is fixedly connected between the wedge block 16 and the inner wall of the insertion slot 13.

[0051] An annular groove 14 is formed on the end face of the plug 7. The annular groove 14 is connected to three plug slots 13. An annular body 18 is slidably arranged in the annular groove 14. The annular body 18 is in contact with the inclined surfaces of the three wedge blocks 16. It should be understood that during the process of the first body 11 being threaded into the second body 12, the second body 12 will squeeze the annular body 18, and the annular body 18 will squeeze the inclined surfaces of the three wedge blocks 16. Under the squeezing, the wedge blocks 16 move within the insertion groove 13. The wedge blocks 16 simultaneously drive the inner jaws 15 to move until the three inner jaws 15 clamp the inner wall of the second port 402 of the hub body 4. While clamping the second port 402 of the hub body 4, the insertion groove 13 is centered inside the second port 402 of the hub body 4. This helps to ensure that the hub body 4, the insertion plug 7, the central shaft 6, and the spindle 1 are on the same axis, providing favorable conditions for subsequent turning and ensuring accurate turning of the spherical surface of the hub body 4.

[0052] like Figure 3 , Figure 4 , Figure 8 and Figure 9 As shown, in one embodiment, three elastic support members are provided between the annular body 18 and the annular groove 14. The elastic support members include three connection ports 19, which are opened on the end face of the annular body 18. Three connecting rods 20 are inserted into the annular body 18. The three connecting rods 20 pass through the three connection ports 19 and are threadedly connected to the inner wall of the annular groove 14. A second support spring 21 is provided in each of the three connection ports 19, and the end of the second support spring 21 is fixedly connected to the inner wall of the connection port 19.

[0053] The inner wall of the annular groove 14 has three threaded holes 22, which are threaded to the ends of the three connecting rods 20.

[0054] It should be understood that the threaded connection between the connecting rod 20 and the annular groove 14 enables the annular body 18 to be detachable. Furthermore, when the connecting rod 20 and the annular groove 14 are threadedly connected, the annular body 18 can slide freely within the annular groove 14 under the elastic action of the second support spring 21. When the annular body 18 loses the function of the second sleeve 12, the second support spring 21 will push the annular body 18 to move outward from the annular groove 14.

[0055] like Figure 1 and Figure 2 As shown, in one embodiment, an annular limiting body 23 is fixedly connected to the surface of the plug 7, and the annular limiting body 23 contacts the port edge of the second port 402 of the hub body 4. It should be understood that by setting the relative arrangement of the annular limiting body 23 and the circular limiting plate 5, the hub body 4 is clamped between the annular limiting body 23 and the circular limiting plate 5 after the plug 7 is connected to the central shaft 6.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in one embodiment, an annular knob 24 is fixedly connected to the end of the plug 7 away from the central axis 6. The annular knob 24 has an inner annular surface 2401 and an outer flange surface 2402. It should be understood that by providing the annular knob 24, it is convenient for operators to rotate the plug 7 with a wrench.

[0057] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in one embodiment, the ejector pin assembly includes a movable base 25, on which a support shaft 26 is fixedly mounted. An ejector pin body 27 is fixedly connected to the end of the support shaft 26. The ejector pin body 27 is mated in the conical hole 8. An ultrasonic ranging sensor 28 is fixedly connected to the edge of the end of the support shaft 26. The ultrasonic ranging sensor 28 is used to measure the distance between the ultrasonic ranging sensor 28 and the inner ring surface 2401 of the annular knob 24.

[0058] Specifically, a support rail 29 is slidably disposed below the movable seat 25. A threaded rod 31 is rotatably connected to the inner wall of the support rail 29. The movable seat 25 is threadedly connected to the surface of the threaded rod 31. A second motor 30 is fixedly connected to the end of the support rail 29, and the output end of the second motor 30 is fixedly connected to the end of the threaded rod 31. It should be understood that after the plug 7 and the central shaft 6 are connected by the docking assembly, and after ensuring that the plug 7 and the central shaft 6 are coaxially connected, the second motor 30 is started. The second motor 30 drives the threaded rod 31 to rotate, and the threaded rod 31 drives the movable seat 25 to move. The movable seat 25 drives the support shaft 26 and the ejector pin 27 to move until the ejector pin 27 is inserted into the tapered hole 8, supporting the end face of the plug 7 and ensuring that the plug 7 will not move or wobble during rotation. This indirectly ensures the stability of the hub body 4 clamped between the circular limit plate 5 and the plug 7, thereby ensuring the machining accuracy and stability. Before turning, First, the spindle 1 drives the chuck assembly to rotate. The chuck assembly then drives the central shaft 6, the insert plug 7, and the hub body 4 to rotate as a whole. The annular knob 24 on the insert plug 7 rotates synchronously. The ultrasonic ranging sensor 28 measures the distance from the ultrasonic ranging sensor 28 to the inner ring surface 2401 of the annular knob 24. After the insert plug 7 and the annular knob 24 rotate one revolution, the ultrasonic ranging sensor 28 detects a set of distance values. If there is a significant deviation between the measured distance values, it indicates that the insert plug 7 is not coaxially driven with the central shaft 6 and the spindle 1, requiring inspection and correction to ensure machining accuracy.

[0059] like Figure 1 and Figure 7 As shown, in one embodiment, it also includes a drive base 32, on which a first motor 33 is fixedly mounted. The output shaft of the first motor 33 is fixedly connected to the end of the main shaft 1, and the main shaft 1 is rotatably connected to the drive base 32.

[0060] It should be understood that the first motor 33 drives the main shaft 1 to rotate, thus providing rotational power to the main shaft 1.

Claims

1. A large mixed-flow pump rotor spherical intelligent turning device, comprising a spindle (1) and an ejector pin assembly, characterized in that: Also includes: The chuck assembly includes a chuck body (2) and three movable jaws (3). The three movable jaws (3) are used to clamp and position the outer edge of the first port (401) of the hub body (4). The chuck body (2) is fixedly installed on the end face of the spindle (1). The port positioning component includes a first limiting component located at the first port (401) of the hub body (4), a second limiting component located at the second port (402) of the hub body (4), and a docking component; The first limiting component includes a circular limiting plate (5), which is fixedly connected to the end face of the chuck body (2), and a central shaft (6) is fixedly connected to the end face of the circular limiting plate (5). The second limiting component includes a plug (7), the inner end of which is provided with a centering clamping component, which is used to center the plug (7) in the second port (402) of the hub body (4), the outer end face of the plug (7) is provided with a tapered hole (8), and the docking component is provided between the plug (7) and the central shaft (6), which is used to dock the plug (7) and the central shaft (6); The docking assembly further includes a first sleeve (11) and a second sleeve (12). The first sleeve (11) is fixedly connected to the end face of the plug (7), and the second sleeve (12) is fixedly sleeved on the surface of the central shaft (6). The outer surface of the first sleeve (11) is provided with a first thread (1101), and the inner wall of the second sleeve (12) is provided with a second thread (1201). The second sleeve (12) is threaded onto the surface of the first sleeve (11). The centering clamping assembly includes three insertion slots (13) and an annular groove (14). The three insertion slots (13) are opened on the edge of the insertion plug (7) and are arranged in an annular array with reference to the insertion plug (7). Each of the three insertion slots (13) is slidably provided with an inner clamping claw (15). A wedge block (16) is fixedly connected to the inner end of the inner clamping claw (15). A first support spring (17) is fixedly connected between the wedge block (16) and the inner wall of the insertion slot (13). The annular groove (14) is formed on the end face of the plug (7). The annular groove (14) is connected to the three plug slots (13). An annular body (18) is slidably disposed in the annular groove (14). The annular body (18) is in contact with the inclined surfaces of the three wedge blocks (16).

2. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 1, characterized in that: The docking assembly includes a docking plug (9) and a docking interface (10). The docking plug (9) is fixedly connected to the end face of the central shaft (6). The docking interface (10) is opened at the center of the end face of the plug (7). The docking plug (9) is inserted into the docking interface (10).

3. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 1, characterized in that: Three elastic support members are provided between the annular body (18) and the annular groove (14). The elastic support members include three connection ports (19). The three connection ports (19) are opened on the end face of the annular body (18). Three connecting rods (20) are inserted into the annular body (18). The three connecting rods (20) pass through the three connection ports (19) respectively and are threadedly connected to the inner wall of the annular groove (14). A second support spring (21) is provided in each of the three connection ports (19). The end of the second support spring (21) is fixedly connected to the inner wall of the connection port (19).

4. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 3, characterized in that: The inner wall of the annular groove (14) is provided with three threaded holes (22), and the three threaded holes (22) are threadedly connected to the ends of the three connecting rods (20).

5. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 1, characterized in that: An annular limiting body (23) is fixedly connected to the surface of the plug (7), and the annular limiting body (23) contacts the edge of the port of the second port (402) of the hub body (4).

6. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 1, characterized in that: The plug (7) is fixedly connected to an annular knob (24) at one end away from the central axis (6). The annular knob (24) has an inner annular surface (2401) and an outer flange surface (2402).

7. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 6, characterized in that: The ejector assembly includes a movable base (25), on which a support shaft (26) is fixedly mounted. An ejector body (27) is fixedly connected to the end of the support shaft (26), and the ejector body (27) is mated within a tapered hole (8). An ultrasonic ranging sensor (28) is fixedly connected to the edge of the end of the support shaft (26). The ultrasonic ranging sensor (28) is used to measure the distance between the ultrasonic ranging sensor (28) and the inner ring surface (2401) of the annular knob (24).

8. The intelligent turning device for the spherical surface of a large mixed-flow pump rotor according to claim 1, characterized in that: It also includes a drive base (32), on which a first motor (33) is fixedly mounted. The output shaft of the first motor (33) is fixedly connected to the end of the main shaft (1), and the main shaft (1) is rotatably connected to the drive base (32).

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