Machining clamp for centripetal impeller

Abstract

The centripetal impeller comprises a bottom plate, a supporting column, a locking bolt and an integrated pressing ring, a screw hole is formed in the upper end face of the bottom plate, the supporting column is fixed to the bottom plate, the locking bolt penetrates through a through hole of the integrated pressing ring to be in threaded connection with the screw hole, and the integrated pressing ring is in a circular ring shape. The integrated pressing ring is provided with a plurality of deformable areas and a plurality of pressing bosses, the deformable areas and the pressing bosses are connected at intervals, and the supporting column is matched with the integrated pressing ring and used for clamping the centripetal impeller; the machining clamp for the centripetal impeller solves the problems of poor stability and low efficiency in an existing machining process method for the centripetal impeller, and meanwhile, the machining clamp for clamping centripetal impellers of different sizes at a time and rapidly aligning the datum of casting forming blades in batch machining of the centripetal impellers is achieved. Product process quality stability and working efficiency are effectively improved, and labor intensity is reduced.

Description

Technical Field

[0003] The invention relates to the technical field of mechanical processing, in particular to a processing fixture for a centripetal impeller. Background Art

[0004] With the continuous development of numerical control technology, higher requirements are put forward for the processing accuracy and surface quality of aviation parts, especially high quality, light weight and long service life. These are the basic goals pursued by the development of aircraft engines, and the basis for achieving this goal is to improve manufacturing accuracy and quality. As a key component of an aircraft engine, the blades of the centrifugal impeller are usually manufactured by precision casting. In the processing and manufacturing stage, the outer diameter and end face of the end mounting shaft need to be processed based on the cast blades to ensure its precise matching with other engine components. However, the processing technology used in the centrifugal impeller on the market currently has the problems of poor stability and low efficiency. These problems not only affect the production efficiency, but also limit the improvement of the performance of aircraft engines. Specifically, when facing the complex shape of the centrifugal impeller, the existing processing technology is often difficult to ensure the consistency and repeatability of the processing process, resulting in large fluctuations in product quality. In addition, due to the low processing efficiency, the production cost also increases, which is a considerable challenge for the aviation manufacturing industry that pursues economic benefits and cost control. In order to solve these problems, the industry has been exploring more advanced processing technologies. The present invention aims to provide a new centrifugal impeller processing method, which can effectively improve the processing stability and efficiency while reducing the production cost. By adopting innovative processing technology and process optimization, the present invention can ensure the processing accuracy and surface quality of the centrifugal impeller and meet the demand of aircraft engines for high-performance parts. This not only helps to improve the overall performance of aircraft engines, but also provides technical support for the development of the aviation manufacturing industry. Summary of the invention

[0005] The invention discloses a processing fixture for a radial impeller, which can solve one of the technical problems in the processing of the radial impeller.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a processing fixture for a radial impeller, characterized in that it includes a base plate, a support column, a locking bolt, and an integrated pressure ring. The upper end surface of the base plate is provided with a first screw hole, the support column is fixed to the base plate, the locking bolt passes through the through hole of the integrated pressure ring and is threadedly connected to the first screw hole, the integrated pressure ring is in a circular ring shape, and the integrated pressure ring is provided with a plurality of deformable areas and a plurality of clamping bosses, the deformable areas and the clamping bosses are connected at intervals, and the support column and the integrated pressure ring cooperate to clamp the radial impeller.

[0007] Preferably, a limiting column is also installed on the upper end surface of the base plate, the length of the limiting column is smaller than the supporting column, and the limiting column is used to limit the circumferential rotation angle of the centrifugal impeller.

[0008] Preferably, there are multiple limiting columns evenly distributed on the bottom plate.

[0009] Preferably, four support columns are evenly distributed circumferentially and installed on the base plate, and a blade avoidance groove is provided on one side of the support column.

[0010] Preferably, the top of the support column is arc-shaped.

[0011] Preferably, an eccentric adjustment device is detachably mounted on the upper end surface of the bottom plate, the eccentric adjustment device is in contact with the centrifugal impeller, and the eccentric adjustment device is used to adjust the center position of the centrifugal impeller.

[0012] Preferably, the eccentric adjustment device includes a base and a fine-tuning stud, the base is fixed on the bottom plate, a second screw hole is arranged on the upper end of the base, and the fine-tuning stud abuts against the impeller through the second screw hole.

[0013] Preferably, there are multiple eccentric adjustment devices, which are evenly installed on the base plate.

[0014] Preferably, the one-piece pressure ring is provided with a plurality of non-deformable areas, and the clamping boss is arranged on the non-deformable areas.

[0015] Preferably, the bottom plate is in a circular shape.

[0016] A processing fixture for a centrifugal impeller provided by the present invention has the following beneficial effects: the processing fixture for the centrifugal impeller is provided with an integrated pressure ring, and the integrated pressure ring is provided with multiple non-deformable areas and multiple deformable areas, so that the integrated pressure ring is tightly attached to the centrifugal impeller, thereby being adaptable to centrifugal impellers of different shapes. At the same time, the centrifugal impeller can be quickly fixed through the integrated pressure ring and the support column, thereby improving the processing efficiency.

[0017] Furthermore, the present invention can also be detachably provided with an eccentric adjusting device. On the one hand, an appropriate number of eccentric adjusting devices can be set according to the size of the centrifugal impeller. On the other hand, the fine-tuning studs of the eccentric adjusting device can fine-tune the impeller position to adapt to centrifugal impellers of different sizes and shapes. Through this fine-tuning, slight deviations that may occur in the manufacturing process of the centrifugal impeller can be compensated, ensuring that the impeller remains in the optimal position during the processing, solving the problem of a processing fixture for quickly aligning the reference of the cast blades in one clamping during batch processing of centrifugal impellers. Through this fixture, the efficiency and accuracy of centrifugal impeller processing can be improved, the labor intensity can be reduced, and the processing quality can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0019] Figure 1 Schematic diagram of the structure of a machining fixture for a centrifugal impeller in an embodiment of the present invention;

[0020] Figure 2 Schematic diagram of the structure of a machining fixture for a centrifugal impeller in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the integrated pressure ring structure in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the integrated pressure ring structure in an embodiment of the present invention;

[0023] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein. DETAILED DESCRIPTION

[0024] In order to better understand the above technical solution, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0026] The radial impeller is a key component of aircraft engines. The blades are precision cast. During the processing and manufacturing stage, the cast blades are used as a reference to process the outer diameter and end face of the end mounting shaft. The processing methods currently used for radial impellers on the market have problems such as poor stability and low efficiency.

[0027] To solve the above problem, in one embodiment, Figure 1 , Figure 2As shown, a processing fixture for a centrifugal impeller 7 is provided, including a base plate 1, a support column 3, a locking bolt 4, and an integrated pressure ring 5. The upper end surface of the base plate 1 is provided with a first screw hole 13, the support column 3 is fixed to the base plate 1, and the locking bolt 4 passes through the through hole 51 of the integrated pressure ring 5 and is threadedly connected with the first screw hole 13. The integrated pressure ring 5 is annular, and the integrated pressure ring 5 is provided with a plurality of deformable areas 53 and a plurality of clamping bosses 52. The deformable areas 53 and the clamping bosses 52 are connected at intervals. The deformable areas 53 are realized by arranging a local thin wall or notch structure in the annular structure of the integrated pressure ring 5. As an example, the material of the integrated pressure ring 5 is elastic Steel, in the specific implementation, other materials or other methods can also be used to make the one-piece pressure ring 5. For example, the deformable area 53 can be made of aluminum alloy / fiber composite material, etc., and the deformable area 53 and the non-deformable area 54 can be fixedly connected by welding / bonding, etc. These areas can undergo elastic deformation when subjected to force, so as to adapt to the outer surface of the radial impeller 7 of different sizes and shapes; the clamping boss 52 is a rigid structure, evenly distributed between the deformable areas 53, and is used to apply a uniform clamping force to the radial impeller 7 under the action of the locking bolt 4; the support column 3 and the one-piece pressure ring 5 cooperate to clamp the radial impeller 7.

[0028] Specifically, the present embodiment describes in detail the construction and use method of a processing fixture for a centrifugal impeller 7, the fixture comprising a base plate 1, a support column 3, a locking bolt 4 and an integrated pressure ring 5; the base plate 1 is the base part of the fixture, and its upper end surface is provided with a first screw hole 13; these first screw holes 13 are used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; the support columns 3 are threadedly connected to the base plate 1 through the first screw holes 13; the support columns 3 are evenly distributed on the circumference of the base plate 1 to provide stable support for the centrifugal impeller 7; the integrated pressure ring 5 is provided with a first screw hole 13; the first screw hole 13 is ... first screw hole 13 is used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; the first screw hole 13 is used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; the first screw hole 13 is used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; the first screw hole 13 is used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; the first screw hole 13 is used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; the first screw hole 13 is used to fix the support columns 3 and to be threadedly connected with the locking bolt 4; The integrated pressure ring 5 is designed to be annular, and is characterized in that it is provided with a plurality of deformable areas 53 and a plurality of clamping bosses 52. The deformable areas 53 allow the integrated pressure ring 5 to adapt to the centrifugal impellers 7 of different sizes when being clamped, thereby improving the flexibility and adaptability of clamping. The clamping bosses 52 are evenly distributed on the circumference of the integrated pressure ring 5, and are used to cooperate with the locking bolts 4 to achieve the fixation of the centrifugal impeller 7. The deformable areas 53 and the clamping bosses 52 are connected at intervals to form an alternating pattern. This design enables the integrated pressure ring 5 to be clamped when it is subjected to the pressure. When pressure is applied, each clamping boss 52 can be deformed independently, so as to better adapt to and clamp different parts of the centrifugal impeller 7; the locking bolt 4 passes through the through hole 51 of the integrated pressure ring 5 and is threadedly connected with the first screw hole 13 on the bottom plate 1. This connection method ensures that the integrated pressure ring 5 is fixed on the bottom plate 1 and provides sufficient clamping force when clamping the centrifugal impeller 7; the centrifugal impeller 7 is placed on the support column 3 so that the outer diameter of the impeller matches the integrated pressure ring 5, and then the locking bolt 4 is gradually tightened to make the integrated pressure ring The clamping boss 52 of 5 contacts and clamps the centrifugal impeller; during the clamping process, due to the deformable area 53 of the one-piece pressure ring 5, fine-tuning can be performed according to the specific size of the centrifugal impeller 7 to ensure that the centrifugal impeller is clamped evenly and firmly; once the centrifugal impeller 7 is correctly clamped, processing can be started, such as turning the outer diameter and end face of the shaft. The design of the fixture ensures the stability and processing accuracy of the centrifugal impeller during the processing. After the processing is completed, the locking bolt 4 is loosened and the centrifugal impeller 7 is removed to complete the entire processing process.

[0029] In this embodiment, the processing fixture of the centrifugal impeller is provided with an integrated pressure ring, and the integrated pressure ring is provided with multiple non-deformable areas and a number of deformable areas, so that the integrated pressure ring is tightly attached to the centrifugal impeller, thereby being adaptable to centrifugal impellers of different shapes. At the same time, the centrifugal impeller can be quickly fixed through the integrated pressure ring and the support column, thereby improving the processing efficiency.

[0030] In one embodiment, based on the above embodiment, refer to Figure 1 As shown, a limiting column 6 is also installed on the upper end surface of the bottom plate 1 . The length of the limiting column 6 is smaller than the supporting column 3 . The limiting column 6 is used to limit the circumferential rotation angle of the centrifugal impeller 7 .

[0031] Specifically, in this embodiment, we introduce in detail a specially designed centrifugal impeller 7 processing fixture, which improves the efficiency and accuracy of impeller processing with its unique structure and function. One of the core components of the fixture is the support columns 3, which are fixed on the base plate 1 and threadedly connected to the base plate 1 through the first screw hole 13, ensuring the stability and reliability of the structure. There are four support columns 3, which are evenly distributed on the circumference of the base plate 1. This circumferentially uniform design provides a stable support platform for the centrifugal impeller 7, which helps to maintain the stability of the impeller during the processing. In addition, the limit columns 6 are also installed on the upper end surface of the base plate 1. Their design length is smaller than the support columns 3. This detail consideration ensures that the limit columns 6 will not cause any interference to the centrifugal impeller when clamping the impeller, avoiding possible damage and processing errors. The main responsibility of the limit column 6 is to limit the circumferential rotation angle of the centrifugal impeller 7. This function is crucial to ensure that the impeller maintains the correct position and posture during the processing, thereby ensuring the processing quality. Through this carefully designed fixture, we can effectively improve the accuracy of impeller machining, reduce the deviation that may occur during the machining process, and ensure that the machining quality of the impeller meets the expected standards.

[0032] In one embodiment, based on the above embodiment, refer to Figure 1 , Figure 2 As shown, there are multiple limiting columns 6 evenly distributed on the base plate 1 .

[0033] Specifically, in this embodiment, we elaborate on the design features of a centrifugal impeller 7 processing fixture, with particular attention to the layout and function of the limit column 6. The fixture includes a plurality of limit columns 6, which are evenly distributed on the upper end surface of the base plate 1, and are equal to the number of support columns 3, each of which is four, and are precisely arranged in the four quadrants of the base plate 1. Such a layout enables each limit column 6 to effectively position and fix the corresponding part of the centrifugal impeller 7. Each limit column 6 is threadedly connected to the base plate 1 through the first screw hole 13, ensuring the firmness and reliability of the connection. This evenly distributed design not only provides comprehensive support for the impeller, but also ensures the stability of the impeller during the processing, prevents circumferential rotation or displacement caused by processing torque or external force, thereby ensuring the processing accuracy and processing quality of the impeller. Through this design, the fixture can adapt to centrifugal impellers of different sizes, improving the flexibility and efficiency of the processing operation. The top of the limit column 6 is designed as a cylindrical surface, which helps to contact the blades of the centrifugal impeller 7, limit the circumferential rotation angle of the impeller, and ensure that the impeller maintains the correct position and posture during the processing; the cylindrical surface design of the limit column 6 enables the centrifugal impeller to contact the limit column 6 smoothly during clamping, reducing friction and damage during the installation process; the cylindrical limit column 6 can effectively limit the rotation of the impeller, ensuring that the impeller will not deviate during the processing.

[0034] In one embodiment, based on the above embodiment, refer to Figure 1 , Figure 2 As shown, four support columns 3 are evenly distributed in the circumferential direction and installed on the base plate 1, and a blade avoidance groove is provided on one side of the support column 3.

[0035] Specifically, in this embodiment, we introduce in detail a processing fixture for a radial impeller 7, the design of which pays special attention to providing stable and uniform support for the radial impeller during the processing. There are four support columns 3 in the fixture, which are evenly distributed on the bottom plate 1 in the circumferential direction and are threadedly connected to the bottom plate 1 through the first screw hole 13. This uniform distribution design not only ensures the stability of the radial impeller 7 during the processing, but also ensures the uniform distribution of force, thereby avoiding deformation or damage of the impeller caused by uneven force. A blade avoidance groove is carefully designed on one side of each support column 3. This detail consideration is to prevent the support column 3 from interfering with the blade when clamping the impeller, thereby protecting the blade from damage. The design of the blade avoidance groove enables the support column 3 to fit the contour of the impeller tightly, while ensuring that no damage is caused to the blade during the clamping process, thereby ensuring the integrity and processing quality of the radial impeller. This design reflects the fixture's attention to the protection of the details of the radial impeller while ensuring processing efficiency, further improving the safety and reliability of the processing process.

[0036] In one embodiment, based on the above embodiment, refer to Figure 1 , Figure 2 As shown, the top of the support column 3 is in an arc shape.

[0037] Specifically, in this embodiment, we describe in detail a processing fixture for the centrifugal impeller 7, with particular attention paid to the design of the support column 3. The top of the support column 3 is designed to be arc-shaped, which enables a smooth transition when the support column 3 contacts the blades of the centrifugal impeller 7, reduces the friction between the contact surfaces, and thus provides a smooth support surface. This arc-shaped top design not only helps to protect the blades from damage, but also ensures the stability of the impeller during the processing, and prevents unnecessary movement or vibration caused by improper support. This fine design consideration ensures that the fixture not only ensures processing accuracy, but also extends the service life of the centrifugal impeller, improves processing efficiency and finished product quality. Through this arc-shaped support design, the centrifugal impeller can maintain a precise position during the processing, so that the processing result is more accurate and meets the needs of high-precision processing. Furthermore, the top of the support column 3 is made of rubber and other materials, which can prevent slipping and avoid damage to the centrifugal impeller 7.

[0038] In one embodiment, based on the above embodiment, refer to Figure 1 , Figure 2As shown, the upper end surface of the bottom plate 1 can be detachably mounted with an eccentric adjusting device 2 , which is in contact with the centrifugal impeller 7 . The eccentric adjusting device 2 is used to adjust the center position of the centrifugal impeller 7 .

[0039] Specifically, in this embodiment, we elaborate on the structure and operation details of a centrifugal impeller 7 processing fixture, and especially emphasize the role of the eccentric adjustment device 2. The eccentric adjustment device 2 is detachably mounted on the upper end surface of the base plate 1 and distributed in different directions of the base plate 1 (the number of eccentric adjustment devices 2 is determined according to actual needs). Its main function is to fine-tune the center position of the impeller to ensure the precise alignment of the impeller center with the fixture center, which is crucial to improving the accuracy during the processing. The adjustable part of the eccentric adjustment device 2 can be a plurality of rotatable screws or adjustable support arms, and abuts against the centrifugal impeller 7. By rotating the adjustable part of the eccentric adjustment device 2, the impeller position is fine-tuned to adapt to centrifugal impellers of different sizes and shapes. Through this fine-tuning, the slight deviation that may occur in the manufacturing process of the centrifugal impeller can be compensated, ensuring that the impeller is kept in the best position during the processing, thereby achieving a high-precision processing effect. This precise adjustment mechanism is one of the key factors in improving the processing quality of the impeller.

[0040] In one embodiment, based on the above embodiment, refer to Figure 1 , Figure 2 As shown, the eccentric adjustment device 2 includes a base and a fine-tuning stud 21. The base is fixed on the bottom plate 1. A second screw hole is arranged on the upper end of the base. The fine-tuning stud 21 abuts against the impeller through the second screw hole.

[0041] Specifically, in this embodiment, we have introduced in detail the detailed structure and application method of the eccentric adjustment device 2, which is a key component of the centrifugal impeller 7 processing fixture. The eccentric adjustment device 2 consists of two parts: a base and a fine-tuning stud 21. The base is firmly fixed on the base plate 1 and is threadedly connected to the base plate 1 through the first screw hole 13, thereby ensuring its stability during operation; a second screw hole is provided on the base, which is a mounting interface specially designed for the fine-tuning stud 21. The fine-tuning stud 21 is connected to the base through these second screw holes. Its unique design allows the fine-tuning stud 21 to accurately abut against the impeller of the centrifugal impeller 7 when rotating or moving. The design of the fine-tuning stud 21 takes into account the flexibility and accuracy of the operation, so that the operator can easily and carefully fine-tune the center position of the impeller. This fine-tuning capability is crucial to ensuring the precise alignment of the impeller center with the fixture center, which directly affects the accuracy of the processing process and the quality of the final product. Through this precise adjustment, the processing error can be minimized, the processing accuracy of the impeller can be improved, and high-quality centrifugal impeller 7 products can be produced.

[0042] In one embodiment, based on the above embodiment, refer to Figure 1 , Figure 2 As shown, there are multiple eccentric adjustment devices 2 evenly installed on the base plate 1.

[0043] Specifically, in this embodiment, we describe in detail the specific structure and use method of the eccentric adjustment device 2 in the processing fixture of the centrifugal impeller 7, and especially emphasize the distribution of the eccentric adjustment device 2. There are multiple eccentric adjustment devices 2, which are evenly installed on the bottom plate 1. For example, when there are two eccentric adjustment devices 2, they can be installed on opposite sides. When there are three eccentric adjustment devices 2, the interval between each eccentric adjustment device 2 is equal. When there are four eccentric adjustment devices 2, the eccentric adjustment devices 2 can be evenly distributed in the four directions of east, south, west and north, so that the adjustment device on the eccentric adjustment device 2 can contact the impeller of the centrifugal impeller 7. The eccentric adjustment device 2 is provided with fine-tuning studs 21, which are installed on the eccentric adjustment device 2. At the upper end of the joint device 2, the fine-tuning studs 21 are the key components of the eccentric adjusting device 2, which allow the operator to make micron-level adjustments to the position of the centrifugal impeller 7; each fine-tuning stud 21 can rotate independently so that the center of the impeller can accurately coincide with the center of the fixture. The design of these eccentric adjusting devices 2 allows the center position of the centrifugal impeller 7 to be adjusted from different directions to ensure that the impeller center coincides with the center of the fixture, thereby improving the processing accuracy. Each eccentric adjusting device 2 is threadedly connected to the base plate 1 through the first screw hole 13.

[0044] In one embodiment, based on the above embodiment, refer to Figure 3 , Figure 4 As shown, the integrated pressure ring 5 is provided with a plurality of non-deformable areas 54 , and the pressing bosses 52 are arranged on the non-deformable areas 54 .

[0045] Specifically, this embodiment describes in detail the structure and use method of a processing fixture for the radial impeller 7, especially the design and function of the integrated pressure ring 5. The integrated pressure ring 5 is designed to be annular, and is characterized by being provided with multiple deformable areas 53 and multiple non-deformable areas 54; the deformable areas 53 allow the integrated pressure ring 5 to adapt to radial impellers 7 of different sizes when clamped, thereby improving the flexibility and adaptability of clamping; the clamping bosses 52 are evenly distributed on the non-deformable areas 54 of the integrated pressure ring 5, and are used to cooperate with the locking bolts 4 to achieve fixation of the radial impeller 7; bolt through holes 51 are provided on both sides of each clamping boss 52 of the integrated pressure ring 5, and these through holes 51 are used to pass the locking bolts 4 and are threadedly connected to the screw holes on the base plate 1 to fix the integrated pressure ring 5 and clamp the radial impeller 7. This design ensures the stability and reliability of the fixture during the processing.

[0046] In one embodiment, based on the above embodiment, refer to Figure 2 As shown, the base plate 1 is in the shape of a ring.

[0047] Specifically, in this embodiment, the design and function of the base plate 1, which is the basic part of a centrifugal impeller 7 processing fixture, are described in detail. The base plate 1 adopts a circular ring structure. This design makes the base plate 1 basically consistent with the outer structure of the centrifugal impeller 7 and the integrated pressure ring 5. The bottom surface of the base plate is the mounting surface, which fits with the machine tool table during processing. The base plate 1 includes an outer diameter 11 and an inner hole 12. The outer diameter 11 is used for fixture clamping and correction. The inner hole 12 is not only to reduce the weight of the base plate 1 and improve the portability and operational flexibility of the fixture, but also its design fully considers the structural strength of the base plate 1 to ensure that even when the weight is reduced, the base plate 1 can still withstand various forces during the processing and maintain the stability and durability of the fixture. This carefully designed base plate 1 not only improves the processing efficiency, but also extends the service life of the fixture.

[0048] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A processing fixture for a centripetal impeller, characterized in that: It includes a base plate, a support column, a locking bolt, and an integrated pressure ring. The upper end surface of the base plate is provided with a first screw hole. The support column is fixed to the base plate. The locking bolt passes through the through hole of the integrated pressure ring and is threadedly connected to the first screw hole. The integrated pressure ring is in a circular ring shape. The integrated pressure ring is provided with multiple deformable areas and multiple clamping bosses. The deformable areas and the clamping bosses are connected at intervals. The support column and the integrated pressure ring cooperate to clamp the centripetal impeller.

2. The machining fixture for the centrifugal impeller according to claim 1, characterized in that: A limiting column is also installed on the upper end surface of the bottom plate. The length of the limiting column is smaller than that of the supporting column. The limiting column is used to limit the circumferential rotation angle of the centrifugal impeller.

3. The machining fixture for the centrifugal impeller according to claim 2, characterized in that: There are multiple limiting columns evenly distributed on the bottom plate.

4. The machining fixture for the centrifugal impeller according to claim 3, characterized in that: The four support columns are evenly distributed in the circumferential direction and are installed on the bottom plate. A blade avoidance groove is provided on one side of the support column.

5. The machining fixture for the centrifugal impeller according to claim 1, characterized in that: The top of the support column is in an arc shape.

6. The machining fixture for the centrifugal impeller according to claim 1, characterized in that: An eccentric adjustment device can be detachably mounted on the upper end surface of the bottom plate. The eccentric adjustment device is in contact with the centrifugal impeller and is used to adjust the center position of the centrifugal impeller.

7. The machining fixture for the centrifugal impeller according to claim 7, characterized in that: The eccentric adjustment device comprises a base and a fine-tuning stud. The base is fixed on the bottom plate. A second screw hole is arranged on the upper end of the base. The fine-tuning stud abuts against the impeller through the second screw hole.

8. The machining fixture for the centrifugal impeller according to claim 7, characterized in that: There are multiple eccentric adjustment devices, which are evenly installed on the base plate.

9. The machining fixture for the centrifugal impeller according to claim 1, characterized in that: The one-piece pressure ring is provided with a plurality of non-deformable areas, and the pressing boss is arranged on the non-deformable areas.

10. The machining fixture for the centrifugal impeller according to claim 1, characterized in that: The bottom plate is in the shape of a circular ring.

Images