Three-dimensional flow impeller machining device and machining method

Abstract

A three-dimensional flow impeller machining device comprises a base, a plurality of supporting columns are fixedly installed on the bottom face of the base and evenly distributed around the circle center of the base, a screw hole is formed in the circle center of the top face of the base, a screw is installed in the screw hole in a threaded fit mode, and a limiting adjusting part is installed at the top end of the screw. The opening amplitude of the arc-shaped plate can be adjusted by rotating the threaded rod, so that the three-dimensional flow impeller center holes with different diameters can be adapted; the radial position of the contact block is adjusted through the lead screw to adapt to impeller discs of different sizes, a special clamp does not need to be replaced, the application range of the device is widened, and the equipment investment cost is reduced; the contact between the arc-shaped plate and the inner wall of the center hole of the impeller is flexible fit, namely arc-shaped surface contact, and compared with rigid clamping point contact, secondary damage such as scratches and extrusion deformation to the inner wall of the center hole can be avoided, and the integrity of an impeller blank is guaranteed; the adjustment can be completed manually without additional tools; the guide groove limits the rotating shaft, and the insertion block guides the circular plate, so that the adjusting process is stable and smooth, and the operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of impeller machining equipment, and particularly relates to a three-dimensional flow impeller machining device and a machining method. BACKGROUND

[0002] As the "heart component" of fluid machinery, the three-dimensional flow impeller is widely used in the fields of petroleum chemical industry, water treatment, energy and the like, and the machining precision of the three-dimensional flow impeller directly determines the flow, lift and energy consumption indexes of the fluid machinery. With the continuous improvement of the performance requirements of industrial production on the fluid machinery, the machining of the three-dimensional flow impeller faces multiple challenges: on the one hand, the impeller structure presents a trend of "thin-walled and complex curved surface", which puts forward higher requirements on the positioning stability and fixing reliability in the machining process; on the other hand, different specifications (central hole diameter and disc size) of impeller machining tasks need to be frequently switched in the production scene, and the adaptability and operation convenience of the traditional machining device have been difficult to meet the efficient production requirements. There are the following problems in production: 1. The existing three-dimensional flow impeller machining device generally adopts a "single dimension positioning" design: some devices only realize positioning by inserting a central shaft sleeve into the center hole of the impeller, but the matching gap between the shaft sleeve and the center hole is easy to cause slight radial movement of the impeller; another part of the device only relies on the clamping points on the edge of the base to radially clamp the disc, and the clamping points are unevenly attached due to the edge precision error of the impeller blank, so that a stable positioning reference cannot be formed; 2. The machining device is mostly designed in a "one-to-one" special manner: different sizes of central shaft sleeves are needed for impellers with different central hole diameters; and corresponding specifications of clamping clamps are needed for impellers with different disc diameters. When the machining specifications are switched each time, not only the clamps need to be replaced, but also a large amount of special clamp costs need to be additionally invested; The above problems become the key bottleneck restricting the machining quality and efficiency. SUMMARY

[0003] The application provides a three-dimensional flow impeller machining device and a machining method to solve the technical problems in the prior art.

[0004] In order to achieve the above purpose, the technical scheme adopted by the application is as follows: a three-dimensional flow impeller machining device, comprising a base, a plurality of support columns are fixedly installed on the bottom surface of the base, the plurality of support columns are evenly distributed with the center of the base, a screw hole is formed in the center of the top surface of the base, a screw rod is threadedly installed in the screw hole, and a limiting adjustment part is installed at the top end of the screw rod.

[0005] As a preferred, the limiting adjustment part comprises a supporting assembly, a control assembly and a plurality of contact assemblies, the control assembly controls the contact of the contact assemblies with the inner wall of the center hole of the three-dimensional flow impeller, and the supporting assembly supports the control assembly and the contact assemblies.

[0006] As preferred, the support assembly comprises a fixed rod, a groove is formed at the top end of the fixed rod, a plurality of vertical long slots are formed on the outer periphery of the fixed rod, the long slots are in communication with the interior of the groove, and the bottom end of the fixed rod is fixedly connected with the top end of the screw rod.

[0007] As preferred, the control assembly comprises a threaded rod, the threaded rod is rotatably installed on the inner wall of the bottom end of the groove, a circular plate is slidably installed in the groove, a threaded hole is formed on the top surface of the circular plate, the threaded rod passes through the threaded hole, a plurality of insertion blocks are fixedly installed on the outer periphery of the circular plate, a through hole is formed on one side of the insertion block, the insertion block can be inserted into the long slot, and a circular block is fixedly installed at the top end of the threaded rod.

[0008] As preferred, the contact assembly comprises an arc-shaped plate, a first connecting rod and a second connecting rod, a rotating shaft is rotatably installed in the through hole of the insertion block, one end of the first connecting rod is rotatably connected with the end surface inner wall of the long slot, one end of the first connecting rod is located at the bottom end in the long slot, a sliding groove is formed in the concave surface of the arc-shaped plate, a sliding block is slidably installed in the sliding groove, the other end of the first connecting rod is hingedly connected with the side surface of the sliding block, one end of the second connecting rod is rotatably connected with one end of the rotating shaft, and the other end of the second connecting rod is hingedly connected with the bottom end of the concave surface of the arc-shaped plate; the first connecting rod and the second connecting rod are cross-placed, and the connecting portions are connected through movable shafts.

[0009] As preferred, the inner walls of the front and rear ends of the long slot are respectively provided with guide grooves, and the front and rear ends of the rotating shaft are respectively inserted into the corresponding guide grooves.

[0010] As preferred, a plurality of through grooves are formed on the top surface of the base, the through grooves are uniformly distributed with the center of the base as the center, the through grooves pass through the upper and lower ends of the base, a lead screw is movably installed in the through groove, one end of the lead screw passes through the outer periphery of the base, a rotating block is fixedly installed at one end of the lead screw, the other end of the lead screw is movably connected with the inner wall of one side of the through groove, a lead screw nut is threadedly and cooperatively installed on the lead screw, a contact block is fixedly installed at the top end of the lead screw nut, and the front and rear ends of the contact block are respectively in contact with the inner walls of the front and rear ends of the through groove.

[0011] A machining method of a three-dimensional flow impeller, machining steps are as follows: S1: fixing the machining device and pretreatment (1) Device fixation: Fasten the support column at the specified position of the machining table with fasteners such as bolts, and confirm that the base (1) is in a horizontal state without inclination and shaking through a level or visual observation. (2) Component inspection and debugging: Rotate the screw rod to check whether the thread cooperation between the screw rod and the base screw hole is smooth without jamming and wire slipping phenomenon. Rotate the circular block at the top end of the threaded rod to observe whether the rotation of the threaded rod in the groove of the fixed rod is flexible and whether the circular plate can be vertically moved downward with the rotation of the threaded rod. Rotate the rotating block of the lead screw to confirm whether the transmission between the lead screw and the lead screw nut is normal, and whether the lead screw nut drives the contact block to move in the through groove without jamming. Apply lubricating oil to all rotating shafts and hinges to ensure the smooth movement of moving parts; (3) Impeller pretreatment confirmation: Inspect the center hole of the three-dimensional impeller to be processed to ensure that the inner wall is smooth and free of burrs and unevenness. Use calipers to measure the inner diameter of the center hole to confirm that it conforms to the clamping dimensions of the device. At the same time, check the edge of the impeller disc for defects such as deformation and cracks. S2: Impeller positioning and placement (1) Adjust the height of the limiting adjustment part: Rotate the round block at the top of the screw by hand to slowly screw the screw into the screw hole of the base, causing the fixing rod and the arc plate to move down synchronously until the entire limiting adjustment part is 10-20cm above the base. At this time, the arc plate is in a retracted state, and its maximum outer diameter is 5-10mm smaller than the inner diameter of the impeller center hole, making it easier for the impeller to fit in. (2) Impeller placement: Hold the impeller disc of the three-dimensional flow impeller with both hands and place the impeller steadily on the top surface of the base. At the same time, let the fixing rod and the arc plate pass through the center hole of the impeller to ensure that the bottom surface of the impeller is completely in contact with the top surface of the base, without any gaps or warping. (3) Initial center alignment: By visually observing the position of the impeller's center hole and the base's center, slightly adjust the impeller's placement on the base so that the two are initially aligned on the same vertical center line. S3: Center hole fixation (1) Driving the circular plate to move downward: Rotate the round block at the top of the threaded rod clockwise by hand, causing the threaded rod to rotate clockwise within the groove of the fixed rod; since the insert block on the outer periphery of the round plate is inserted into the long groove of the fixed rod, the long groove restricts the rotation of the round plate, and the round plate can only move slowly downward along the vertical direction of the groove, while simultaneously causing the insert block and the rotating shaft to slide downward along the guide groove; (2) Curved plate expansion bonding: When the rotating shaft moves downward, it pulls one end of the second connecting rod downward, while the other end of the second connecting rod is hinged to the concave bottom end of the arc plate. Therefore, the second connecting rod will push the arc plate to expand away from the fixed rod. At the same time, one end of the first connecting rod is hinged to the inner wall of the end face of the long groove, and the other end is hinged to the slider. The slider slides in the groove of the arc plate, which, together with the second connecting rod, allows the arc plate to expand smoothly and avoid tilting. (3) Self-locking fixation: Continue to rotate the threaded rod until there is no displacement when the impeller is pushed by hand, and the arc surface of the arc plate completely fits the inner wall of the center hole of the impeller. At this time, stop rotating the threaded rod, and use the self-locking feature of the threaded rod and the threaded hole of the circular plate to keep the circular plate at the current position and prevent the arc plate from retreating, thereby achieving the limited fixing of the center hole of the impeller; S4: Secondary reinforcement of the wheel disc (1) Move the contact block: Use a wrench or hand to rotate the rotating block at one end of the lead screw, which drives the lead screw to rotate in the through slot of the base. Since the lead screw nut is matched with the lead screw threads, and the front and rear ends of the contact block are in contact with the inner wall of the through slot, the lead screw nut will move along the through slot towards the center of the base, synchronously driving the contact block at the top end to approach the edge of the impeller disc. (2) Clamping the wheel disc: Rotate the rotating blocks of all lead screws in the clockwise direction one by one, and check the position of the impeller after each rotation until the inner side of all contact blocks is in close contact with the outer peripheral wall of the impeller disc. Shake the impeller with your hand, and there is no displacement or shaking phenomenon. At the same time, confirm that the contact blocks are evenly distributed around the center of the base and are in force balance. S5: Impeller processing (1) Parameter setting: According to the processing requirements of the three-dimensional flow impeller, set the parameters in the control system of the processing equipment: Cutting speed: Set according to the material of the impeller, generally 80-120 m / min for stainless steel and 150-200 m / min for aluminum alloy; Feed rate: Set according to the processing procedure, usually 0.1-0.3 mm / r for milling blades; Processing path: Import the CAD model of the impeller, generate the processing path, and confirm that the path covers all the areas to be processed without omission or collision risk; (2) Start processing: Start the processing equipment and let the equipment process the impeller according to the set path. During processing, observe the state of the impeller through the monitoring screen of the equipment or manually; (3) Pay special attention to: Whether the impeller has displacement or shaking, if the impeller is found to be offset, press the emergency stop button immediately; Whether the device fixing parts are loose, if there is looseness, tighten the fixing parts after stopping processing; (3) Multi-process continuous processing: If the impeller needs to go through multiple processes, it does not need to be disassembled, and the process parameters can be directly switched on the processing equipment to continue processing, ensuring the consistency of position accuracy between processes; S6: Post-processing (1) Release the disc clamping: after processing, first close the processing equipment, then reverse rotate the rotating block of the screw rod with hand or wrench, drive the screw nut and contact block to move away from the impeller disc, until the contact block and the disc are completely separated, no contact pressure; (2) Release the center hole limit: reverse rotate the round block at the top of the threaded rod, drive the threaded rod to rotate counterclockwise, the round plate moves vertically upward along the groove, synchronously drives the insert block and the rotating shaft to move upward; when the rotating shaft moves upward, pull the second connecting rod, make the arc plate shrink to the direction of the fixed rod, until the arc plate and the inner wall of the impeller center hole are completely separated; (3) Take out the impeller: hold the processed impeller disc with both hands, slowly lift it up, make the impeller separate from the fixed rod and the arc plate, then put the impeller on the finished product storage rack, avoid scratching the surface of the impeller; (4) Device cleaning and maintenance: Blow off the chips on the top surface of the base, the through slot and the surface of the arc plate with compressed air; Wipe the oil stains on the surface of each component with a cloth dipped in cleaning agent, especially the threaded parts; Check whether the arc plate is deformed or worn, whether the screw rod is bent, if the parts are damaged, replace them in time; Rotate each moving part again, confirm its flexibility, finally adjust the device to the initial state, wait for the next use.

[0012] Compared with the prior art, the advantages and positive effects of the present application are: (1) Double positioning reinforcement: through the double positioning structure of "center hole limit + disc clamping", the adjusting part is fixed from the inner circumference of the center hole, and the contact block is clamped from the radial direction of the top surface of the base, the two work together to ensure that the impeller does not move radially during processing, further improving the positioning stability; (2) Self-locking fixing structure: the threaded cooperation between the threaded rod and the round plate in the control assembly has self-locking property, after the arc plate contacts with the inner wall of the center hole, the accidental displacement of the round plate can be avoided, ensuring that the arc plate and the inner wall of the center hole are always closely fitted without gap; at the same time, the contact block is rigidly clamped by the screw rod transmission, the double fixing structure effectively resists the cutting force, vibration and other interference during processing, preventing the impeller from loosening; (3) Multi-specification adaptability: the opening amplitude of the arc plate can be adjusted by rotating the threaded rod, which is suitable for the center hole of three-dimensional flow impeller with different diameters; the radial position of the contact block can be adjusted by the screw rod, which is suitable for the impeller disc with different sizes, without the need to replace special clamps, which expands the application range of the device and reduces the equipment investment cost; (4) The contact between the arc plate and the inner wall of the impeller center hole is flexible fitting, that is, the arc surface contact, which can avoid secondary damage such as scratch and extrusion deformation on the inner wall of the center hole, and protect the integrity of the impeller blank; (5) The threaded rod and the screw rod are equipped with rotating round blocks / rotating blocks, and the adjustment can be completed manually without additional tools; the limiting of the guide groove to the rotating shaft and the guiding effect of the insert block to the round plate make the adjustment process smooth and smooth, reducing the operation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows: Figure 1 is a structural diagram of the present application Figure 1 ; Figure 2 is a structural diagram of the present application Figure 2 ; Figure 3 is a front view of the present application; Figure 4 is a bottom view of the present application; Figure 5 is an internal section view of the limiting adjustment part; Figure 6 is Figure 5 A partial enlarged view of

[0014] Explanation of reference signs: 1, base; 2, support; 3, screw rod; 4, fixed rod; 5, groove; 6, long slot; 7, threaded rod; 8, round plate; 9, insert block; 10, arc plate; 11, first connecting rod; 12, second connecting rod; 13, rotating shaft; 14, sliding groove; 15, guide groove; 16, through slot; 17, screw; 18, screw nut; 19, contact block. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in conjunction with the drawings and examples.

[0016] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0017] Example 1 The following will be further described in conjunction with Figures 1-6 one kind of three-dimensional flow impeller machining device in example 1, as Figure 1 shown, including base 1, a plurality of support columns 2 are fixedly installed on the bottom surface of base 1, a plurality of support columns 2 are evenly distributed with the center of base 1, a screw hole is opened in the center of the top surface of base 1, a screw rod 3 is threadedly fitted and installed in the screw hole, and the screw rod 3 is installed at the top end of the limiting adjustment part.

[0018] The limiting adjustment part is inserted into the center hole of the three-dimensional flow impeller and is in contact with the inner wall of the center hole of the three-dimensional flow impeller, a circular block is fixedly installed at the top end of the screw rod 3, and rotating the circular block facilitates rotating the screw rod 3; the support column 2 can be fixedly installed on the machining table by means of bolts or the like; the screw rod 3 is rotated and screwed into the screw hole, so that the limiting adjustment part is located above the base 1; then the three-dimensional flow impeller with the center hole drilled is placed on the top surface of the base 1, at the same time, the limiting adjustment part passes through the center hole of the three-dimensional flow impeller, the limiting adjustment part is controlled to work, the components of the limiting adjustment part are in contact with the inner wall of the center hole of the three-dimensional flow impeller, and the three-dimensional flow impeller is fixed, so as to avoid displacement of the three-dimensional flow impeller during machining and prevent unqualified products from being machined.

[0019] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , the limiting adjustment part comprises a supporting assembly, a controlling assembly and a plurality of contact assemblies, the controlling assembly controls the contact assemblies to be in contact with the inner wall of the center hole of the three-dimensional flow impeller, and the supporting assembly supports the controlling assembly and the contact assemblies.

[0020] The plurality of contact assemblies are uniformly distributed around the controlling assembly, the supporting assembly is connected with the top end of the screw rod 3 and supports the controlling assembly and the contact assemblies, the controlling assembly controls the contact assemblies to move outward around the controlling assembly, so that the contact assemblies are in contact with the inner wall of the center hole of the three-dimensional flow impeller, and then the three-dimensional flow impeller is limited.

[0021] As shown in Figure 5 , the supporting assembly comprises a fixed rod 4, a groove 5 is formed at the top end of the fixed rod 4, a plurality of vertical long slots 6 are formed around the outer periphery of the fixed rod 4, the long slots 6 are in communication with the inside of the groove 5, and the bottom end of the fixed rod 4 is fixedly connected with the top end of the screw rod 3.

[0022] The components in the controlling assembly enter the groove 5, part of the components of the contact assemblies are located in the long slots 6, and the diameter of the screw rod 3 is greater than the diameter of the fixed rod 4; the screw rod 3 is rotated and screwed into the screw hole, so that the fixed rod 4 passes through the screw hole, and the placement of the supporting assembly is completed.

[0023] As shown in Figure 5 , the controlling assembly comprises a threaded rod 7, the threaded rod 7 is rotatably installed on the inner wall at the bottom end of the groove 5, a circular plate 8 is slidably installed in the groove 5, a threaded hole is formed at the top surface of the circular plate 8, the threaded rod 7 passes through the threaded hole, a plurality of insertion blocks 9 are fixedly installed around the outer periphery of the circular plate 8, a through hole is formed at one side of the insertion block 9, the insertion block 9 can be inserted into the long slot 6, and a circular block is fixedly installed at the top end of the threaded rod 7.

[0024] Rotating the circular block drives the threaded rod 7 to rotate, the insertion block 8 is inserted into the long slot 6, the insertion block 9 and the circular plate 8 are limited, the circular plate 8 is prevented from rotating with the threaded rod 7, and the vertical displacement of the circular plate 8 is controlled.

[0025] As Figure 1 , Figure 5 and Figure 6 shown, the contact assembly comprises an arc plate 10, a first connecting rod 11, a second connecting rod 12, a rotating shaft 13 rotatably mounted in the through hole of the plug-in block 9, one end of the first connecting rod 11 rotatably connected with the end face inner wall of the long slot 6, the one end of the first connecting rod 11 located at the bottom end in the long slot 6, the concave surface of the arc plate 10 is provided with a sliding groove 14, the sliding block 15 is slidably mounted in the sliding groove 14, the other end of the first connecting rod 11 is hingedly connected with the side surface of the sliding block 15, one end of the second connecting rod 12 is rotatably connected with one end of the rotating shaft 13, the other end of the second connecting rod 12 is hingedly connected with the bottom end of the concave surface of the arc plate 10, the first connecting rod 11 and the second connecting rod 12 are cross placed, and the connection is connected through a movable shaft.

[0026] A plurality of arc plates 10 are uniformly distributed with the fixed rod 4 as the center, the concave surface of the arc plate 10 faces the fixed rod 4, the arc surface of the arc plate 10 is in contact with the inner wall of the central hole of the three-element flow impeller, the other end of the first connecting rod 11 and one end of the second connecting rod 12 are located above, and the one end of the first connecting rod 11 and the other end of the second connecting rod 12 are located below.

[0027] The circular plate 8 drives the plug-in block 9 and the rotating shaft 13 to move downward, one end of the second connecting rod 12 and the other end of the first connecting rod 11 move downward, the other end of the second connecting rod 12 is connected with the arc plate 10, and one end of the first connecting rod 11 is connected with the inner wall of the long slot, so that the arc plate 10 can be controlled to move away from the fixed rod, so that the arc plate 10 is in contact with the inner wall of the central hole of the three-element flow impeller, after a plurality of arc plates 10 are in contact with the inner wall of the central hole of the three-element flow impeller, and through the self-locking property of the threaded rod 7 and the threaded hole, the circular plate 8 can be prevented from continuing to move after adjustment, and a gap between the arc plate and the central hole of the three-element flow impeller can be avoided, the arc plate in contact with the inner wall of the central hole can limit the three-element flow impeller on the base 1, the center of the base 1 and the center of the central hole of the three-element flow impeller can be on the same vertical center line, initial positioning can be performed, and the effect of limiting the movement of the three-element flow impeller can also be achieved.

[0028] As Figure 5 shown, the inner walls of the front and rear ends of the long slot 6 are respectively provided with guide grooves 15, and the front and rear ends of the rotating shaft 13 are respectively inserted into the corresponding guide grooves 15.

[0029] In vertical displacement of the rotating shaft 13, the front and rear ends of the rotating shaft 13 are respectively inserted into the guide grooves 15, the rotating shaft 13 is limited, and deviation of the rotating shaft 13 in the vertical displacement process is avoided, so that stability is maintained in use.

[0030] As Figure 1As shown, the top surface of the base 1 is provided with a plurality of through grooves 16, which are evenly distributed around the center of the base 1 and extend through the top and bottom ends of the base 1. A lead screw 17 is movably installed in each through groove 16. One end of the lead screw 17 extends out of the outer periphery of the base 1 and is fixedly connected with a rotating block. The other end of the lead screw 17 is movably connected with the inner wall of one side of the through groove 16. A lead screw nut 18 is threadedly connected with the lead screw 17. The top end of the lead screw nut 18 is fixedly connected with a contact block 19. The front and rear ends of the contact block 19 are respectively in contact with the front and rear inner walls of the through groove 16.

[0031] Rotating the rotating block drives the lead screw 17 to rotate, controls the lead screw nut 18 to move in the through groove 16, i.e. the lead screw nut 18 moves towards or away from the center of the base 1, drives the contact block 19 to move towards or away from the fixed rod 4, clamps the wheel disc of the three-dimensional flow impeller through the contact block 19, fixes the three-dimensional flow impeller on the base 1, and positions the three-dimensional flow impeller on the base 1 through the contact and limitation of the limiting adjustment part. Then, the contact block 19 clamps the three-dimensional flow impeller to increase the stability of the three-dimensional flow impeller, avoids the shaking of the three-dimensional flow impeller during machining, and prevents the occurrence of unqualified products.

[0032] A three-dimensional flow impeller machining method I. Preparation before machining 1. Device installation and fixation: Fix the struts 2 of the machining device at the predetermined positions of the machining table through bolts and other fasteners, ensure that the base 1 is horizontally placed, and that the struts 2 are uniformly stressed to avoid the overall deviation of the device during machining; 2. Component inspection and debugging: Check the status of each component to ensure that the screw rod 3 and the screw hole of the base 1 are smoothly threadedly connected, the threaded rod 7 rotates flexibly, the arc-shaped plate 10 is not deformed, the lead screw 17 and the lead screw nut 18 are normally transmitted, and each rotating shaft and hinged part is coated with lubricating oil to ensure that the moving parts are flexible and free from jamming; 3. Impeller pretreatment confirmation: Confirm that the three-dimensional flow impeller to be machined has completed the center hole drilling process, that the inner wall of the center hole is free from burrs and unevenness defects, and that the edge of the impeller wheel disc is not obviously deformed to ensure that it meets the clamping requirements of the device; II. Impeller positioning and placement 1. Adjusting the initial height of the limiting adjustment part: Rotate the round block at the top end of the screw rod 3, screw the screw rod 3 into the screw hole of the base 1, drive the fixed rod 4 to move downward synchronously, and make the limiting adjustment part (support assembly, control assembly, and contact assembly) as a whole be at a suitable height above the base 1 to ensure that the outer diameter of the arc-shaped plate 10 in the initial state is smaller than the inner diameter of the center hole of the three-dimensional flow impeller, thereby facilitating the impeller to be sleeved. 2、Impeller center hole set: the three-dimensional flow impeller to be processed is placed on the top surface of the base 1, and the fixed rod 4 and the arc plate 10 defining the adjusting part pass through the center hole of the impeller, ensuring that the bottom surface of the impeller is completely attached to the top surface of the base 1 without suspension or inclination; 3、Initial center alignment: through visual observation or simple positioning tool assistance, adjust the position of the impeller on the base 1, initially align the center of the impeller hole with the center of the base 1 on the same vertical center line, laying the foundation for subsequent accurate definition; Three, center hole definition and fixation 1、Drive contact assembly expansion: rotate the round block at the top end of the threaded rod 7, and drive the threaded rod 7 to rotate in the groove 5. Since the insert block 9 on the outer periphery of the circular plate 8 is inserted into the long slot 6, it is limited by the long slot 6 and cannot rotate with the threaded rod 7. Only the circular plate 8 can move vertically downward along the groove 5, synchronously driving the insert block 9 and the rotating shaft 13 to move downward along the guide slot 15; 2、Arc plate and inner wall of center hole fit: when the rotating shaft 13 moves downward, the arc plate 10 is pushed by the second connecting rod 12 to expand away from the fixed rod 4. At the same time, the first connecting rod 11 slides in the sliding slot 14 of the arc plate 10 through the sliding block 15, and cooperates with the second connecting rod 12 to realize stable movement of the arc plate 10. Continue to rotate the threaded rod 7 until the arc surfaces of several arc plates 10 are completely attached to the inner wall of the three-dimensional flow impeller center hole, and the contact pressure is uniform; 3、Use self-locking to lock positioning: stop rotating the threaded rod 7, and fix the position of the circular plate 8 by the self-locking feature of the threaded rod 7 and the threaded hole of the circular plate 8, to avoid the arc plate 10 from retracting, ensure the arc plate 10 tightly contacts with the inner wall of the center hole, and realize accurate definition of the impeller center hole. At this time, the center of the impeller is completely aligned with the center of the base 1, and the initial positioning is completed; Four, secondary reinforcement and clamping of the wheel disc 1、Adjusting screw drive contact block: rotate the rotating block at one end of the screw 17 on the outer periphery of the base 1 synchronously or one by one, drive the screw 17 to rotate in the through slot 16, make the screw nut 18 move along the through slot 16 towards the center of the base 1, and then push the contact block 19 close to the edge of the wheel disc of the three-dimensional flow impeller; 2、Contact block clamping wheel disc: continue to rotate the rotating block until the inner side of each contact block 19 tightly contacts with the outer wall of the impeller wheel disc, and several contact blocks 19 are evenly distributed with the center of the base 1, and the force is balanced. Through the clamping action of the contact block 19, the impeller is further fixed to avoid radial shaking or circumferential rotation of the impeller during processing; 3. Reinforcement state confirmation: check the fit of the arc plate 10 and the inner wall of the center hole to ensure that there is no gap; confirm that the contact block 19 is firmly clamped with the wheel disc, and there is no displacement or shaking phenomenon when the impeller is pushed by hand, completing the double fixation of the impeller; V. Impeller processing operation 1. Processing parameter setting: according to the processing technology requirements of the three-dimensional flow impeller (such as blade milling, surface polishing, etc.), set the cutting speed, feed rate, processing path and other parameters of the processing equipment to ensure that the processing precision meets the design standard; 2. Processing process monitoring: start the processing equipment and process the impeller according to the preset process. During the processing, observe the state of the impeller in real time, monitor whether the fixed parts of the device are loose, and if abnormalities (such as abnormal noise, impeller displacement) are found, stop processing immediately, re-fix after troubleshooting and continue; 3. Multi-process continuous processing: according to the processing process sequence, complete each processing process of the impeller, without disassembling the impeller during the period, and the position precision consistency between processes is ensured by the stable fixation of the device; Six, disassembly and cleaning after processing 1. Release the wheel disc clamping: after processing is completed, reverse rotate the rotating block of each screw rod 17 to drive the contact block 19 to move away from the wheel disc, releasing the clamping of the impeller wheel disc; 2. Contact assembly reset: reverse rotate the round block at the top of the threaded rod 7 to drive the circular plate 8 to rise vertically along the groove 5, and then pull the rotating shaft 13 up, drive the arc plate 10 to shrink towards the fixed rod 4 through the first connecting rod 11 and the second connecting rod 12, so that the arc plate 10 is separated from the inner wall of the center hole of the impeller; 3. Impeller removal: remove the three-dimensional flow impeller processed from the limiting adjustment part and place it stably in the finished product storage area; 4. Device cleaning and maintenance: clean the cutting chips and oil stains on the top surface of the base 1, the arc surface of the arc plate 10, and the inside of the contact block 19, check whether each part is worn out, replace the severely worn parts in time, and debug the device to the initial state again to prepare for the next processing.

[0033] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can use the disclosed technical content to make changes or modifications to equivalent embodiments applied to other fields, but any simple modification, equivalent change made according to the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical solution of the present application.

Claims

1. A three-dimensional flow impeller processing device characterized by comprising: The base (1) is fixedly installed with a plurality of support columns (2) on the bottom surface, the support columns (2) are uniformly distributed around the center of the base (1), a screw hole is formed in the center of the top surface of the base (1), a screw rod (3) is threadedly installed in the screw hole, and the top end of the screw rod (3) is installed with a limiting adjustment part.

2. A three-dimensional flow impeller processing device according to claim 1, characterized in that, The limiting adjustment part comprises a supporting assembly, a control assembly and a plurality of contact assemblies, the control assembly controls the contact assemblies to contact the inner wall of the central hole of the three-element flow impeller, and the supporting assembly supports the control assembly and the contact assemblies.

3. A three-dimensional flow impeller processing device according to claim 2, wherein The supporting assembly comprises a fixed rod (4), a groove (5) is formed in the top end of the fixed rod (4), a plurality of vertical long grooves (6) are formed in the outer periphery of the fixed rod (4), the long grooves (6) are in communication with the inside of the groove (5), and the bottom end of the fixed rod (4) is fixedly connected with the top end of the screw rod (3).

4. A three-dimensional flow impeller processing device according to claim 3, wherein The control assembly comprises a threaded rod (7), the threaded rod (7) is rotatably installed in the inner wall of the bottom end of the groove (5), a circular plate (8) is slidably installed in the groove (5), a threaded hole is formed in the top surface of the circular plate (8), the threaded rod (7) penetrates through the threaded hole, a plurality of insertion blocks (9) are fixedly installed on the outer periphery of the circular plate (8), a through hole is formed in one side of the insertion block (9), the insertion block (9) can be inserted into the long groove (6), and a circular block is fixedly installed at the top end of the threaded rod (7).

5. A three-dimensional flow impeller processing device according to claim 4, wherein The contact assembly comprises an arc-shaped plate (10), a first connecting rod (11) and a second connecting rod (12), a rotating shaft (13) is rotatably installed in the through hole of the insertion block (9), one end of the first connecting rod (11) is rotatably connected with the end surface inner wall of the long groove (6), one end of the first connecting rod (11) is located at the bottom end in the long groove (6), a sliding groove (14) is formed in the concave surface of the arc-shaped plate (10), a sliding block (15) is slidably installed in the sliding groove (14), the other end of the first connecting rod (11) is hingedly connected with the side surface of the sliding block (15), one end of the second connecting rod (12) is rotatably connected with one end of the rotating shaft (13), and the other end of the second connecting rod (12) is hingedly connected with the bottom end of the concave surface of the arc-shaped plate (10); the first connecting rod (11) and the second connecting rod (12) are cross-placed, and the connecting positions are connected through movable shafts.

6. A three-dimensional flow impeller processing device according to claim 5, wherein Guiding grooves (15) are formed in the inner walls of the front and rear ends of the long groove (6), and the front and rear ends of the rotating shaft (13) are inserted into the corresponding guiding grooves (15).

7. A three-dimensional flow impeller machining device according to claim 6, characterized in that A plurality of through grooves (16) are formed in the top surface of the base (1), the through grooves (16) are uniformly distributed around the center of the base (1), the through grooves (16) penetrate through the upper and lower ends of the base (1), a lead screw (17) is movably installed in the through groove (16), one end of the lead screw (17) penetrates through the outer periphery of the base (1), a rotating block is fixedly installed at one end of the lead screw (17), the other end of the lead screw (17) is movably connected with the inner wall of one side of the through groove (16), a lead screw nut (18) is threadedly installed on the lead screw (17), a contact block (19) is fixedly installed at the top end of the lead screw nut (18), and the front and rear ends of the contact block (19) are respectively in contact with the inner walls of the front and rear ends of the through groove (16).

8. A method of machining a three-dimensional flow impeller, characterized by, The machining device according to claim 7, wherein the machining step is: S1: the machining device is fixed and pretreated (1) device fixation: Fasten the support (2) to the designated position of the processing table with fasteners such as bolts, and confirm that the base (1) is in a horizontal state without inclination or shaking through a level or visual observation. (2) Component inspection and debugging: Rotate the screw rod (3) to check whether the thread cooperation between the screw rod and the screw hole of the base (1) is smooth without jamming or galling; Rotate the top round block of the threaded rod (7) to observe whether the rotation of the threaded rod (7) in the groove (5) of the fixed rod (4) is flexible, and whether the round plate (8) can move vertically downward with the rotation of the threaded rod; Rotate the rotating block of the lead screw (17) to confirm whether the transmission between the lead screw (17) and the lead screw nut (18) is normal, and whether the lead screw nut (18) drives the contact block (19) to move smoothly in the through slot (16) without jamming; Apply lubricating oil to each rotating shaft and hinge to ensure the flexibility of the moving parts. (3) Impeller pretreatment confirmation: Check the center hole of the ternary flow impeller to be processed to ensure that the inner wall is smooth without burrs, unevenness, and other defects. Measure the inner diameter of the center hole with a caliper to confirm that it meets the clamping size of the device; At the same time, check the edge of the impeller disc for deformation, cracks, and other defects. S2: Impeller positioning and placement (1) Adjust the height of the limiting adjustment part: Rotate the round block at the top of the screw rod (3) by hand, slowly screw the screw rod (3) into the screw hole of the base (1), drive the fixed rod (4) and the arc plate (10) to move downward synchronously, until the limiting adjustment part is located 10-20 cm above the base (1), and at this time the arc plate (10) is in a contracted state, its maximum outer diameter is 5-10 mm smaller than the inner diameter of the impeller center hole, which facilitates the impeller to be inserted; (2) Impeller placement: Hold the impeller disc of the ternary flow impeller on both sides with both hands, place the impeller smoothly on the top surface of the base (1), and at the same time let the fixed rod (4) and the arc plate (10) pass through the center hole of the impeller, ensuring that the bottom surface of the impeller is completely attached to the top surface of the base (1) without hanging or warping; (3) Initial center alignment: Observe the positions of the impeller center hole and the center of the base (1) by visual observation, slightly adjust the placement of the impeller on the base (1) to make them preliminarily on the same vertical center line; S3: Center hole limiting and fixing (1) Drive the round plate (8) to move downward: Rotate the round block at the top of the threaded rod (7) clockwise with your hand, drive the threaded rod (7) to rotate clockwise in the groove (5) of the fixed rod (4); Since the insert block (9) on the outer circumference of the round plate (8) is inserted into the long slot (6) of the fixed rod (4), the long slot (6) restricts the rotation of the round plate (8), which can only slowly move downward along the vertical direction of the groove (5), while driving the insert block (9) and the rotating shaft (13) to slide downward along the guide slot (15); (2) Arc plate (10) expansion and attachment: When the rotating shaft (13) moves downward, it will pull one end of the second connecting rod (12) to move downward, and the other end of the second connecting rod (12) is hinged to the bottom end of the concave surface of the arc-shaped plate (10), so the second connecting rod (12) will push the arc-shaped plate (10) to expand away from the fixed rod (4); at the same time, one end of the first connecting rod (11) is hinged to the end face inner wall of the long slot (6), and the other end is hinged to the sliding block (15), the sliding block (15) slides in the sliding slot (14) of the arc-shaped plate (10), and cooperates with the second connecting rod (12) to make the arc-shaped plate (10) expand smoothly, avoiding tilting; (3) Self-locking fixation: Continue to rotate the threaded rod (7) until there is no displacement when pushing the impeller with hand, and the curved surface of the arc-shaped plate (10) is completely matched with the inner wall of the center hole of the impeller. At this time, stop rotating the threaded rod (7), and use the self-locking feature of the threaded rod (7) and the threaded hole of the circular plate (8) to keep the current position of the circular plate (8), so that the arc-shaped plate (10) will not retreat, realizing the limited fixation of the center hole of the impeller; S4: Secondary reinforcement of wheel disc (1) Drive the contact block (19) to move: Use a wrench or hand to rotate the rotating block at one end of the screw rod (17), which drives the screw rod (17) to rotate in the through slot (16) of the base (1); since the screw nut (18) is threadedly connected with the screw rod (17), and the front and rear ends of the contact block (19) are in contact with the inner wall of the through slot (16), the screw nut (18) will move along the through slot (16) towards the center of the base (1), synchronously driving the contact block (19) at the top end to approach the edge of the impeller wheel disc; (2) Clamping the wheel disc: Rotate the rotating blocks of all screw rods (17) in the clockwise direction in turn, and check the position of the impeller after each rotation until the inner side of all contact blocks (19) is in close contact with the outer peripheral wall of the impeller wheel disc. Shake the impeller with hand, there is no displacement or shaking phenomenon; at the same time, confirm that the contact blocks (19) are evenly distributed around the center of the base (1) and are in force balance; S5: Impeller processing (1) Parameter setting: according to the processing requirements of the three-dimensional flow impeller, set the parameters in the control system of the processing equipment: Cutting speed: set according to the material of the impeller, generally 80-120 m / min for stainless steel and 150-200 m / min for aluminum alloy; Feed rate: set according to the processing procedure, generally 0.1-0.3 mm / r for milling blades; Processing path: import the CAD model of the impeller, generate the processing path, and confirm that the path covers all the areas to be processed without omission or collision risk; (2) Start processing: start the processing equipment and let the equipment process the impeller according to the set path; during processing, observe the state of the impeller through the monitoring screen of the equipment or manually; (3) Pay attention to: Whether the impeller has displacement or shaking, if the impeller is found to be offset, press the emergency stop button immediately; Whether the device fixing parts are loose, if they are loose, tighten them after stopping processing; (3) Multi-process continuous processing: if the impeller needs to be processed in multiple processes, the impeller does not need to be disassembled, the process parameters can be directly switched on the processing equipment, and the processing can continue to ensure the consistency of the position accuracy between processes; S6: Post-processing after processing (1) Release the disc clamping: after processing, first close the processing equipment, and then reverse rotate the rotating block of the screw rod (17) by hand or wrench, drive the screw nut (18) and the contact block (19) to move away from the impeller disc, until the contact block (19) is completely separated from the disc, and there is no contact pressure; (2) Release the center hole limit: reverse rotate the round block at the top of the threaded rod (7), drive the threaded rod (7) to rotate counterclockwise, the round plate (8) moves vertically upward along the groove (5), synchronously drives the plug-in block (9) and the rotating shaft (13) to move upward; when the rotating shaft (13) moves upward, it pulls the second connecting rod (12), so that the arc-shaped plate (10) shrinks towards the fixed rod (4), until the arc-shaped plate (10) is completely separated from the inner wall of the impeller center hole; (3) Take out the impeller: hold the processed impeller disc with both hands, slowly lift it up, so that the impeller is separated from the fixed rod (4) and the arc-shaped plate (10), then place the impeller on the finished product storage rack, to avoid scratching the surface of the impeller; (4) Device cleaning and maintenance: Use compressed air to blow off the chips on the top surface of the base (1), the through slot (16) and the surface of the arc-shaped plate (10); Use a cloth dipped in cleaning agent to wipe the oil stains on the surface of each component, especially the threaded parts; Check whether the arc-shaped plate (10) is deformed or worn, whether the screw rod (17) is bent, and replace the damaged parts in time; Rotate each moving part again to confirm its flexibility, finally adjust the device to the initial state, and wait for the next use.

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