Tool for self-centering turbine center

Abstract

The utility model discloses a tool for self-centering the center of a turbine. The tool comprises a cylinder body assembly, the positioning assembly is arranged at one end of the cylinder body assembly, the positioning assembly is provided with an inclined plane used for self-centering the center of the turbine, and the positioning assembly is provided with receding grooves for receding turbine blades on the turbine; the end face positioning plate surrounds the periphery of the positioning assembly, and the end face positioning plate is fixed to the cylinder body assembly; and the pressing assembly is used for applying axial force to the turbine and is positioned on one side of the cylinder body assembly. According to the utility model, the center of the turbine can be aligned.

Description

Technical Field

[0001] This utility model relates to the field of turbine manufacturing technology, specifically to a tooling for a self-centering turbine center. Background Technology

[0002] Turbochargers such as Figure 1 and Figure 2 Turbine A consists of a shaft 1 and a turbine body fixed to the shaft 1. The turbine body includes a disc 2, turbine blades 3, an intermediate column 4, and a wheel head 5. One end of the disc 2 is provided with a boss 6, which is fixed to the shaft 1. The other end of the disc 2 is fixed to the intermediate column 4. The turbine blades 3 are arranged at intervals along the circumference of the intermediate column 4 and are fixed to the disc 2 and the intermediate column 4 respectively. The other end of the intermediate column 4 is fixed to the wheel head 5.

[0003] In its initial stage, a turbine is usually a cast turbine blank. From the turbine blank to the turbine, it needs to go through machining and dynamic balancing tests. During the machining process, the center of the turbine blank needs to be aligned. If the center of the turbine blank is located off from the actual center of the turbine blank during machining, it will cause poor accuracy of the turbine dynamic balance.

[0004] Since a turbine is a high-temperature, high-speed component, it is subjected to a temperature of about 1,000 degrees Celsius and a speed of 100,000 revolutions per minute during operation. Under such working conditions, the dynamic balance of the turbine is very important. How to ensure that the initial dynamic balance of the product is small and that the dynamic balancing process can meet the requirements quickly and with high quality, and how to accurately determine the center of mass of the turbine before machining is the current task. Utility Model Content

[0005] This invention provides a tooling for centering a self-centering turbine, which can align the turbine's center.

[0006] The technical solutions to the above technical problems are as follows:

[0007] Tooling for self-centering turbine centers includes:

[0008] Cylinder block assembly;

[0009] A positioning component is provided at one end of the cylinder block assembly. The positioning component has an inclined surface for self-centering turbine center and a clearance groove for making way for turbine blades on the turbine.

[0010] The end face positioning plate surrounds the positioning assembly and is fixed to the cylinder assembly.

[0011] A clamping assembly that applies axial force to the turbine is located on one side of the cylinder block assembly.

[0012] The turbine shaft passes through the positioning assembly, allowing it to enter the clearance hole. The disc body engages with the inclined surface on the toothed component, which supports the turbine. Due to the inclined surface, the disc body engages with the inclined surface on each toothed component, automatically aligning the turbine's center with the centers of the cylinder assembly and the positioning assembly. Pressure is applied to the turbine by the clamping assembly, pressing it between the clamping assembly and the end face positioning plate. This tooling, after self-centering the turbine, also clamps it, improving the accuracy of machining process holes on the turbine when using a drilling tool to machine the axial end face of the wheel head. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the turbine in the first direction.

[0014] Figure 2 This is a three-dimensional view of the turbine in the second direction.

[0015] Figure 3 This is the front view of the tooling used for the self-centering turbine center.

[0016] Figure 4 This is a cross-sectional view of the cylinder block assembly, positioning assembly, end face positioning plate, and turbine.

[0017] Figure 5 A 3D view of the positioning component.

[0018] Figure 6 This is a 3D view of the clamping assembly.

[0019] Figure label:

[0020] Turbine A, shaft 1, disc 2, turbine blades 3, intermediate column 4, wheel head 5, boss 6.

[0021] End face positioning plate 10, cylinder body 11, mounting hole 11a, positioning core 12, clearance hole 12a, mounting hole 12b, elastic component 13, support 14, toothed component 15, inclined surface a, clearance groove b, rotating pressing cylinder 16, pressure rod 17, connecting groove 18, base plate 19, support seat 20. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components, unless otherwise explicitly limited.

[0026] like Figures 1 to 6 As shown, the tooling for a self-centering turbine center of this utility model includes a cylinder block assembly, a positioning assembly, an end face positioning plate 10, and a clamping assembly. The following is a detailed description of each part and the relationship between them.

[0027] The cylinder assembly includes a cylinder 11, a positioning core 12, and an elastic component 13. The cylinder 11 is provided with a mounting hole 11a, and the positioning core 12 is clearance-fitted with the mounting hole 11a. The positioning component 13 is located at one end of the positioning core 12, and the elastic component 13 is fitted with the other end of the positioning core 12.

[0028] The cylinder body 11 is cylindrical and made of metal. One end of the positioning core 12 is provided with a clearance hole 12a. The clearance hole 12a is preferably a blind hole. The clearance hole 12a is used to accommodate the shaft 1 on the turbine A. The diameter of the clearance hole 12a is at least 1.5 times the maximum outer diameter of the shaft 1. The other end of the positioning core 12 is provided with a plurality of mounting holes 12b. Each mounting hole 12b is fitted with an elastic member 13. A part of the elastic member 13 is exposed outside the mounting hole 12b.

[0029] The positioning component is located at one end of the cylinder block assembly. The positioning component has an inclined surface a for centering the self-centering turbine A, and a clearance groove b for making way for the turbine blades 3 on the turbine A.

[0030] The positioning assembly includes a support 14 and multiple toothed components 15. The support 14 is fixed to the cylinder assembly. In this embodiment, the support 14 is annular and fixed to the cylinder 11. The multiple toothed components 15 are located at one end of the support 14 and arranged along the circumference of the support 14. Each toothed component 15 is provided with the inclined surface a, which mates with the disc 2. A clearance groove is formed between two adjacent toothed components 15. The clearance groove b mates with the turbine blade 3. When the turbine blade 3 is in close contact with the clearance groove b, the toothed component 15 can limit the circumferential direction of the turbine blade 3, thereby restricting the rotation of the turbine blade 3.

[0031] The end face positioning plate 10 surrounds the positioning assembly and is fixed to the cylinder assembly. In this embodiment, the end face positioning plate 10 is fixed to the cylinder 11, which can be secured by bolts, rivets, or the like. When pressure is applied to the turbine A, the turbine A, the positioning assembly, and the positioning core 12 move axially along the cylinder 11. When the turbine blade 3 abuts against the end face positioning plate 10, the turbine A reaches its maximum downward pressure position and can no longer move. The turbine A is then pressed between the pressing assembly and the end face positioning plate 10.

[0032] The clamping assembly applies axial force to the turbine A and is located on one side of the cylinder assembly. The clamping assembly includes a rotating downward-pressing cylinder 16 and a pressure rod 17. One end of the pressure rod 17 is fixed to the rotating downward-pressing cylinder 16, and the other end of the pressure rod 17 has a mating groove 18 that cooperates with the turbine A. The mating groove 18 is used to avoid the axial end face of the wheel head 5, so as to allow the cutting tool to be positioned correctly when machining the process hole located at the center of the wheel head 5. The rotating downward-pressing cylinder 16 is also used to allow the cutting tool to be positioned correctly, avoiding interference between the rotating downward-pressing cylinder 16 and the cutting tool.

[0033] It also includes a base plate 19, on which the cylinder assembly and the clamping assembly are both mounted. The cylinder 11 is fixed to the base plate 19, the elastic member 13 abuts against the base plate 19, and the clamping assembly also includes a support seat 20, which is fixed to the base plate 19. The rotary pressing cylinder 16 is fixed to the support seat 20.

[0034] The working process of this utility model is as follows:

[0035] The shaft 1 of turbine A is passed through the positioning assembly, allowing it to enter the clearance hole 12a. The disc 2 engages with the inclined surface a on the toothed component 15, providing support for turbine A. Due to the action of the inclined surface a, the disc 2 engages with the inclined surface a on each toothed component 15, thereby automatically aligning the center of turbine A with the center of the cylinder assembly and the positioning assembly. Pressure is applied to turbine A by the clamping assembly, pressing turbine A between the clamping assembly and the end face positioning plate 10, thus restricting turbine A in both the axial and radial directions. This tooling, after self-centering turbine A, is then clamped. When machining process holes (used for subsequent machining to engage with the center) on the axial end face of the wheel head 5 using a drilling tool, the accuracy of machining process holes on turbine A can be improved.

Claims

1. A tooling for centering a turbine center, characterized in that, The utility model relates to a centering device for turbine, which comprises: a cylinder assembly; a positioning assembly arranged at one end of the cylinder assembly, the positioning assembly being provided with a slope (a) for centering a turbine (A) and a clearance slot (b) for allowing a turbine blade (3) on the turbine (A) to pass; an end face positioning plate (10) surrounding the positioning assembly, the end face positioning plate (10) being fixed to the cylinder assembly; a pressing assembly for applying an axial force to the turbine (A), the pressing assembly being arranged at one side of the cylinder assembly.

2. The tooling for centering a turbine center according to claim 1, wherein, The cylinder assembly comprises a cylinder (11) provided with a mounting hole (11a); a positioning core (12) in clearance fit with the mounting hole (11a); and an elastic component (13) in fit with the other end of the positioning core (12).

3. The tool for centering a turbine center according to claim 1, wherein, The positioning assembly comprises a support (14) fixed to the cylinder assembly; a plurality of tooth-like components (15) arranged at one end of the support (14) and along the circumference of the support (14), each tooth-like component (15) being provided with the slope (a), and the clearance slot (b) being formed between two adjacent tooth-like components (15).

4. The tool for centering a turbine center according to claim 1, wherein, The pressing assembly comprises: a rotating pressing cylinder (16); a pressing rod (17) having one end fixed to the rotating pressing cylinder (16) and the other end provided with a combination slot (18) in fit with the turbine (A).

5. The tool for centering a turbomachine centering according to any one of claims 1 to 4, characterized in that, The utility model further comprises a base plate (19), and the cylinder assembly and the pressing assembly are both arranged on the base plate (19).

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