Machining tool for cooling volute

Abstract

The utility model discloses a machining tool for a cooling volute. The machining tool comprises a clamp body. The adjusting backing ring is arranged on the clamp main body and is used for being matched with a mounting positioning surface of the cooling volute; the positioning block is arranged on the clamp body, and a positioning groove used for being matched with an outlet pipe of the cooling volute is formed in the positioning block; the clamping device comprises a driving unit, a connection transmission unit and an open washer, the driving unit is arranged on the clamp body, the open washer is located in the cooling volute, and the driving unit drives the open washer to move downwards through the connection transmission unit so as to press the cooling volute; the fixture has the advantages that accurate positioning and rapid clamping can be achieved, deformation is prevented, and the problems of inaccurate clamping and over-positioning of special-shaped thin-wall parts are solved.

Description

Technical Field

[0001] The utility model relates to a processing tooling, in particular to a processing tooling for a cooling volute. Background Art

[0002] As a core component of key equipment such as superchargers and compressors, the processing quality of the cooling volute directly affects the performance and reliability of the whole machine. Due to the complex spiral curved surface, irregular geometric contour and thin-walled structure characteristics of the cooling volute, it belongs to a typical special-shaped part, and faces technical challenges such as difficult clamping and positioning and difficult to guarantee processing accuracy in the machining process. With the development of the manufacturing industry towards high precision and high efficiency, and the increasing complexity and diversification of product structures, traditional general-purpose fixtures can no longer meet the processing requirements of such special-shaped parts. Therefore, developing a special processing tooling specifically for special-shaped parts such as cooling volutes has important engineering practical value and economic significance for improving processing efficiency, ensuring product quality and reducing production costs.

[0003] At present, in the processing field of special-shaped parts such as cooling volutes, the following clamping methods are mainly adopted: one is to use general-purpose fixtures such as standard machine vises or three-jaw chucks, and adapt to the workpiece shape by adding pads or customizing jaws; the second is to use hydraulic or pneumatic chucks in cooperation with special jaws for clamping; the third is to use vacuum suction cups or magnetic fixtures for non-trace clamping; the fourth is to design special fixed fixtures and customize them according to the specific workpiece shape. In terms of positioning, the conventional method is to use plane positioning in cooperation with hole positioning, outer circle positioning or V-block positioning to restrict the degrees of freedom of the workpiece. These existing technologies can realize the clamping of special-shaped parts to a certain extent and have been widely used in actual production, providing a technical basis for the mass production of related products.

[0004] However, the existing clamping technologies still have many deficiencies when dealing with special-shaped thin-walled parts such as cooling volutes. Since the clamping force of general-purpose fixtures is often too large and unevenly distributed, it is easy to cause elastic deformation or even permanent deformation of the thin-walled volute, seriously affecting the processing accuracy and product quality. The root cause of this deformation problem lies in the limited selection of positioning references for traditional fixtures, which is prone to over-positioning or under-positioning problems, resulting in unstable workpiece positions during the processing process. And in actual machining applications, many traditional fixtures are relatively high in position and are prone to interference with the tools of three-axis machining centers, thus restricting the arrangement and optimization of processing technologies and further deteriorating the machining surface quality.

[0005] Considering these factors comprehensively, the limitations of the existing technologies seriously restrict the processing efficiency and quality level of special-shaped parts such as cooling volutes, and there is an urgent need to develop more advanced and practical special processing tooling to solve these technical problems. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a processing tooling for a cooling volute, which can accurately position, quickly clamp and prevent deformation, and solve the problems of inaccurate clamping and over-positioning of special-shaped thin-walled parts.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A processing tooling for a cooling volute, including,

[0008] A fixture body;

[0009] An adjusting spacer ring, arranged on the fixture body, for cooperating with the installation positioning surface of the cooling volute;

[0010] A positioning block, arranged on the fixture body, and a positioning groove for cooperating with the outlet pipe of the cooling volute is opened on the positioning block;

[0011] A clamping device, including a driving unit, a connecting and transmission unit and an opening washer. The driving unit is arranged on the fixture body, the opening washer is located inside the cooling volute, and the driving unit drives the opening washer to move downward through the connecting and transmission unit to press the cooling volute.

[0012] Preferably, the fixture body includes a first support plate, a second support plate and a plurality of support columns. The first support plate is located above the second support plate, and the plurality of support columns are connected between the first support plate and the second support plate. A plurality of mounting holes for cooperating with the machine tool workbench are arranged on the second support plate.

[0013] Preferably, the adjusting spacer ring is arranged on the first support plate. A positioning hole is opened on the first support plate, and the adjusting spacer ring is embedded in the positioning hole. The upper surface of the adjusting spacer ring forms a positioning reference surface for cooperating with the installation flange surface of the cooling volute.

[0014] Preferably, two guide columns are arranged on the first support plate at intervals. The positioning block is sleeved between the two guide columns, and a limit nut is also screwed on each guide column. The lower surface of the limit nut is in contact with the upper surface of the positioning block.

[0015] Preferably, a pagoda spring is also sleeved on each guide column. The pagoda spring is located between the positioning block and the first support plate, and is used to support the positioning block to realize up and down floating adjustment.

[0016] Preferably, the driving unit includes a driving cylinder. The cylinder body of the driving cylinder is fixed on the second support plate, and the output shaft of the driving cylinder is connected to the connecting and transmission unit.

[0017] Preferably, the connecting and driving unit includes a ball head universal joint and a ball head connecting rod. The ball head universal joint is fixed on the output shaft of the driving cylinder. The ball head connecting rod is inserted into the ball head universal joint and fixedly connected to the ball head universal joint through an open circlip. The open washer is located below the ball head connecting rod.

[0018] Preferably, the open washer has a disc-shaped structure, and a radially extending opening groove and a plurality of through holes are formed in the open washer.

[0019] Compared with the prior art, the advantages of the present utility model are as follows: During the working process, the adjusting washer is precisely matched with the mounting flange surface of the cooling volute to provide a stable reference positioning for the workpiece, and the positioning groove on the positioning block is tightly matched with the outlet pipe of the cooling volute to jointly realize the positioning constraint of the workpiece. On this basis, the driving unit transmits power to the open washer through the connecting and driving unit, so that the open washer applies a pressing force downward from the inside of the cooling volute. This internal clamping method has significant advantages compared with the traditional external clamping, and can effectively avoid the generation of thin-wall deformation problems. The open washer can ensure that the clamping force is evenly distributed on the inner surface of the volute, thereby protecting the geometric accuracy of the workpiece to the greatest extent while ensuring the clamping reliability. In addition, by replacing the adjusting washers of different specifications, the tooling has good versatility and can meet the processing requirements of cooling volutes of various sizes.

[0020] The whole set of device has a compact structure, is easy to operate, and the clamping force is controllable, providing an efficient and reliable tooling solution for the processing of complex thin-wall parts, and significantly improving the processing efficiency and processing quality of special-shaped parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the cooling volute;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the present utility model;

[0024] Figure 3 It is the front view of the present utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the fixture main body in the present utility model;

[0026] Figure 5Schematic three-dimensional structure diagram of the clamping device in the present utility model;

[0027] In the figure, 1 is the fixture body; 2 is the adjusting spacer ring; 3 is the positioning block; 4 is the positioning groove; 5 is the clamping device; 6 is the connecting transmission unit; 7 is the split washer; 8 is the first support plate; 9 is the second support plate; 10 is the support column; 11 is the mounting hole; 12 is the positioning hole; 13 is the guiding column; 14 is the limit nut; 15 is the pagoda spring; 16 is the driving cylinder; 17 is the ball head universal joint; 18 is the ball head connecting rod; 19 is the snap ring; 20 is the open slot; 21 is the through hole. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0029] Embodiment 1: As Figures 1 - 5 shown, a processing fixture for a cooling volute includes

[0030] the fixture body 1;

[0031] the adjusting spacer ring 2, which is arranged on the fixture body 1 and is used to cooperate with the installation positioning surface of the cooling volute;

[0032] the positioning block 3, which is arranged on the fixture body 1, and a positioning groove 4 for cooperating with the outlet pipe of the cooling volute is formed on the positioning block 3;

[0033] the clamping device 5, which includes a driving unit, a connecting transmission unit 6 and a split washer 7. The driving unit is arranged on the fixture body 1, the split washer 7 is located inside the cooling volute, and the driving unit drives the split washer 7 to move downward through the connecting transmission unit 6 to press the cooling volute tightly.

[0034] Embodiment 2: As Figures 1 - 5 shown, different from Embodiment 1, the fixture body 1 includes a first support plate 8, a second support plate 9 and a plurality of support columns 10. The first support plate 8 is located above the second support plate 9, and the plurality of support columns 10 are connected between the first support plate 8 and the second support plate 9. A plurality of mounting holes 11 for cooperating with the machine tool workbench are arranged on the second support plate 9.

[0035] Through the combined structure of the first support plate 8, the second support plate 9, and multiple support columns 10, a stable spatial frame structure is formed, which not only ensures the overall rigidity and load-bearing capacity but also provides a reasonable installation space layout for each functional component. The first support plate 8 serves as the upper working platform, carrying key positioning elements such as the adjusting spacer 2 and the positioning block 3 to ensure the accuracy and stability of workpiece positioning. The second support plate 9 serves as the bottom support platform and is reliably connected to the machine tool workbench through multiple mounting holes 11, effectively transmitting the cutting force and clamping force during the machining process to the machine tool body. The setting of multiple support columns 10 not only enhances the overall rigidity of the structure but also forms an open operating space between the upper and lower support plates, facilitating the installation and maintenance of transmission components such as the driving cylinder 16. This layered frame design also has good scalability and can flexibly adjust the distance and functional configuration between layers according to the machining requirements of different workpieces.

[0036] The overall structure is compact and reasonable, with uniform weight distribution, effectively reducing vibration and deformation during the machining process, providing a stable basic platform for high-precision machining, and significantly improving the service life and machining accuracy of the tooling.

[0037] In this embodiment, the adjusting spacer 2 is arranged on the first support plate 8. A positioning hole 12 is provided on the first support plate 8, and the adjusting spacer 2 is embedded in the positioning hole 12. The upper surface of the adjusting spacer 2 forms a positioning reference surface that matches the mounting flange surface of the cooling volute.

[0038] By providing a positioning hole 12 on the first support plate 8 and embedding the adjusting spacer 2 therein, precise positioning and stable connection between the spacer and the support plate are achieved, effectively preventing displacement or loosening of the spacer during the machining process. The upper surface of the adjusting spacer 2 serves as a positioning reference surface that matches the mounting flange surface of the cooling volute, providing an accurate and reliable positioning reference for the workpiece, ensuring the position accuracy and repeat positioning accuracy of the workpiece during the machining process. This embedded structure design also has good interchangeability and versatility. When machining cooling volutes of different specifications, only the adjusting spacer 2 of the corresponding size needs to be replaced to quickly adapt to the requirements of the new workpiece, greatly shortening the production preparation time and reducing the tooling cost.

[0039] The design of the positioning hole 12 makes the surface of the spacer flush with the surface of the support plate, avoiding interference of protruding structures with the machining operation and enhancing the compactness of the overall structure.

[0040] In this embodiment, two guide columns 13 are spaced apart on the first support plate 8. The positioning block 3 is sleeved between the two guide columns 13, and a limit nut 14 is also screwed on each guide column 13. The lower surface of the limit nut 14 is in contact with the upper surface of the positioning block 3.

[0041] By arranging two guide posts 13 at intervals on the first support plate 8, a stable and reliable linear motion guide is provided for the positioning block 3, effectively preventing the positioning block 3 from deflecting, swinging or jamming during operation, and ensuring the accuracy and repeatability of the positioning action; the limit nuts 14 screwed on each guide post 13 play a key role in position control. By the contact between the lower surface of the limit nut 14 and the upper surface of the positioning block 3, the accurate limitation of the moving stroke of the positioning block 3 is realized, preventing the mechanism damage that may be caused by over-travel motion.

[0042] In this embodiment, a pagoda spring 15 is also sleeved on each guide post 13. The pagoda spring 15 is located between the positioning block 3 and the first support plate 8 and is used to support the positioning block 3 to realize up and down floating adjustment.

[0043] By sleeving a pagoda spring 15 on each guide post 13 and setting its position between the positioning block 3 and the first support plate 8, an elastic buffer support system is formed, enabling the positioning block 3 to realize the up and down floating adjustment function. This elastic support design effectively solves the over-constraint problem that may be brought by rigid positioning. When there are manufacturing errors or surface unevenness in the cooling volute, the positioning block 3 can automatically adapt to the actual geometric shape of the workpiece under the action of the spring force, ensuring a good fit between the positioning groove 4 and the outlet pipe.

[0044] The conical structure design of the pagoda spring 15 not only provides a stable elastic force but also has good guiding performance. Cooperating with the guiding function of the guide post 13, it ensures the accuracy of the moving track of the positioning block 3 during the floating process. This floating adjustment mechanism can also effectively absorb and relieve the vibration impact during the processing, reducing the positioning error and workpiece surface quality problems caused by vibration, ensuring both the reliability of the positioning and providing the necessary flexible adjustment ability.

[0045] In this embodiment, the driving unit includes a driving cylinder 16. The cylinder body of the driving cylinder 16 is fixed on the second support plate 9, and the output shaft of the driving cylinder 16 is connected to the connecting and transmission unit 6.

[0046] By fixing the cylinder body of the driving cylinder 16 on the second support plate 9, the advantages of the layered frame structure of the fixture body 1 are fully utilized, not only saving the precious upper working space but also providing a stable and reliable installation foundation for the cylinder, effectively avoiding the vibration and deformation problems caused by insufficient support.

[0047] Embodiment Three: As Figures 1 - 5As shown, different from the second embodiment, the connecting and driving unit 6 includes a ball joint 17 and a ball connecting rod 18. The ball joint 17 is fixed on the output shaft of the driving cylinder 16. The ball connecting rod 18 is inserted into the ball joint 17 and fixedly connected to the ball joint 17 through a snap ring 19. The split washer 7 is located below the ball connecting rod 18.

[0048] The design of fixing the ball joint 17 on the output shaft of the driving cylinder 16 realizes the effective conversion of the linear motion of the cylinder into multi-directional motion, provides the split washer 7 with the ability to adjust at multiple angles, and enables it to automatically adapt to the geometric shape and installation error of the inner cavity of the cooling volute. The structural design of inserting the ball connecting rod 18 into the ball joint 17 ensures the continuity and reliability of the transmission. At the same time, the characteristics of the ball connection allow the connecting rod to be adjusted at a certain angle within a certain range, effectively compensating for the possible position deviation during the workpiece installation process. The fixed connection between the ball connecting rod 18 and the ball joint 17 is realized through the snap ring 19, which not only ensures the firmness of the connection, but also facilitates the assembly and maintenance operations, reflecting the practicality and operability of the structural design. The arrangement of the split washer 7 below the ball connecting rod 18 enables the clamping force to be evenly transmitted to the workpiece surface through the flexible adjustment of the ball joint 17, avoiding the problem of local stress concentration that may be caused by rigid connection.

[0049] This flexible transmission mechanism can also effectively absorb and relieve the impact and vibration during the transmission process, protect the cooling volute from damage, and improve the smoothness and positioning accuracy of the clamping action.

[0050] In this embodiment, the split washer 7 has a disc-shaped structure, and a radially extending opening groove 20 and a plurality of through holes 21 are provided on the split washer 7.

[0051] The overall disc-shaped structure provides a good rigid foundation and uniform force distribution characteristics for the split washer 7, ensuring that the clamping force can be smoothly transmitted over a large contact area and effectively avoiding the stress concentration problem that may be caused by point contact or line contact. The radially extending opening groove 20 not only facilitates the insertion of the split washer 7 into the inner cavity of the cooling volute from the side, but also provides a certain elastic deformation ability for the washer, enabling it to better adapt to the geometric shape change of the workpiece inner cavity. This opening design also significantly simplifies the assembly operation, and the operator can easily install the washer in place, improving the production efficiency and operation convenience. The setting of the plurality of through holes 21 reduces the weight of the split washer 7.

[0052] The split washer 7 is made of high-quality engineering plastic or rubber material, has good elasticity and wear resistance, can not only provide sufficient clamping force, but also effectively protect the inner surface of the cooling volute from being scratched or damaged, and is especially suitable for the precise clamping requirements of thin-walled parts.

[0053] The positioning groove 4 is a V-shaped groove structure, and its symmetric wedge-shaped structure can form a stable line-contact positioning with the cylindrical outlet pipe of the cooling volute. This contact method not only provides radial constraint but also has excellent self-aligning ability, effectively compensating for the possible position errors during the workpiece installation process.

[0054] The above description is only the implementation mode of the present application, and it does not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A processing tooling for a cooling volute, characterized in that: Comprising, Fixture body; Adjusting shim ring, arranged on the fixture body and used for cooperating with the installation positioning surface of the cooling volute; Positioning block, arranged on the fixture body, and a positioning groove for cooperating with the outlet pipe of the cooling volute is formed on the positioning block; Clamping device, including a driving unit, a connecting transmission unit and an opening washer, the driving unit is arranged on the fixture body, the opening washer is located inside the cooling volute, and the driving unit drives the opening washer to move downward through the connecting transmission unit to press the cooling volute.

2. The processing tooling for a cooling volute according to claim 1, wherein: The fixture body includes a first support plate, a second support plate and a plurality of support columns, the first support plate is located above the second support plate, the plurality of support columns are connected between the first support plate and the second support plate, and a plurality of mounting holes for cooperating with the machine tool workbench are arranged on the second support plate.

3. The processing tooling for a cooling volute according to claim 2, characterized in that: The adjusting shim ring is arranged on the first support plate, a positioning hole is formed on the first support plate, the adjusting shim ring is embedded in the positioning hole, and the upper surface of the adjusting shim ring forms a positioning reference surface for cooperating with the installation flange surface of the cooling volute.

4. The processing tooling for a cooling volute according to claim 2, characterized in that: Two guide columns are arranged on the first support plate at intervals, the positioning block is sleeved between the two guide columns, and a limit nut is also screwed on each guide column, and the lower surface of the limit nut is in contact with the upper surface of the positioning block.

5. The processing tooling for a cooling volute according to claim 4, characterized in that: A pagoda spring is also sleeved on each guide column, and the pagoda spring is located between the positioning block and the first support plate and is used for supporting the positioning block to realize up and down floating adjustment.

6. The processing tooling for a cooling volute according to claim 2, characterized in that: The driving unit includes a driving cylinder, the cylinder body of the driving cylinder is fixed on the second support plate, and the output shaft of the driving cylinder is connected to the connecting transmission unit.

7. The processing tooling for a cooling volute according to claim 6, characterized in that: The connecting transmission unit includes a ball head universal joint and a ball head connecting rod, the ball head universal joint is fixed on the output shaft of the driving cylinder, the ball head connecting rod is arranged in the ball head universal joint and is fixedly connected to the ball head universal joint through an opening snap ring, and the opening washer is located below the ball head connecting rod.

8. The processing tooling for a cooling volute according to claim 1, characterized in that: The opening washer has a disc-shaped structure, and a radially extending opening groove and a plurality of through holes are formed on the opening washer.

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