Finish turning tool for diffuser

Abstract

The utility model relates to a diffuser finish turning tool which comprises a base, a plurality of supporting columns are arranged on the base, the upper end faces of the supporting columns are arranged in a coplanar mode, at least the upper portions of the supporting columns are conductive portions, and the supporting columns are electrically connected with the negative electrode of a battery. Electromagnets are arranged at the upper parts of piston rods of the hydraulic cylinders, and positive electrodes of the electromagnets are electrically connected with positive electrodes of the batteries; an oil inlet pipeline of each hydraulic cylinder is connected with a normally-open electromagnetic valve, and two power lines of each normally-open electromagnetic valve are electrically connected with the corresponding electromagnet and the negative electrode of the battery respectively. The tool is convenient to operate, and the efficiency can be obviously improved. And the diffuser is supported by multiple points, so that the stress is more uniform, and the diffuser is not easy to deform. After one-time supporting and positioning are completed, machining of the upper end face and the outer circle of the diffuser can be completed.

Description

Technical Field

[0001] This utility model relates to the field of diffuser processing technology, specifically to a diffuser precision machining tooling. Background Technology

[0002] The diffuser is a key component of the turbocharger, belonging to a high-precision, thin-walled product. During machining, clamping deformation is prone to occur, making pre-machining clamping difficult. For example... Figure 1 As shown, one end face of the diffuser has blades, while the other end face requires precision machining. When precision machining this end face, a clamping method cannot be used (as it would interfere with the machining process). Because of the blades on the other side, direct platform support is also not possible; a suspended support method is required. This is often achieved by supporting from one side of the blades and securing with bolts. During positioning, it is also crucial to ensure the horizontality of the precision-machined end face (this machined surface will serve as a reference surface for subsequent machining, making it very important). Workers operate from below the diffuser, using measuring tools to ensure its horizontality. This operation is inconvenient, and manual operation inevitably makes it difficult to guarantee consistent clamping accuracy each time, relying heavily on the worker's experience and skill.

[0003] Utility model patent CN217142364U discloses a diffuser precision machining fixture, which uses a three-jaw chuck to clamp the outer circumference of the diffuser. Because the diffuser has a large diameter and thin walls, the circumferential clamping force cannot be too large, otherwise it is prone to deformation. Furthermore, while precision machining the end face of the diffuser away from the blades is being performed, the outer circumferential surface of the diffuser also needs to be precision machined. Using this three-jaw chuck method, it is impossible to complete the end face machining and outer circumferential surface machining in a single clamping operation. Utility Model Content

[0004] The purpose of this invention is to provide a diffuser precision machining fixture to facilitate the support and positioning of the diffuser before precision machining.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A diffuser precision machining fixture includes a base with a plurality of support columns on the base. The upper end faces of each support column are coplanar, and at least the upper part of the support column is a conductive part. The support column is electrically connected to the negative terminal of the battery.

[0007] The base is equipped with several hydraulic cylinders, and an electromagnet is installed on the upper part of the piston rod of the hydraulic cylinder. The positive electrode of the electromagnet is electrically connected to the positive electrode of the battery.

[0008] Each hydraulic cylinder has a normally open solenoid valve connected to its oil inlet line. The two power lines of the normally open solenoid valve are connected to the electromagnet and the negative terminal of the battery, respectively.

[0009] Furthermore, the support column is provided in three parts, distributed around the center circumference of the base.

[0010] Furthermore, the oil inlet pipe of each hydraulic cylinder is connected to a main oil inlet pipe, the oil return pipe of each hydraulic cylinder is connected to a main oil return pipe, and the main oil inlet pipe and the main oil return pipe are connected to a micro hydraulic station.

[0011] Furthermore, the hydraulic cylinders are provided in 4 to 10 units, evenly distributed around the center circumference of the base.

[0012] Furthermore, the electromagnet is connected to the upper part of the piston rod by screws, and an insulating pad is provided between the electromagnet and the upper part of the piston rod.

[0013] Furthermore, the support column is a metal conductive rod, and the bottom of the support column is insulated from the base.

[0014] The beneficial effects of this utility model are:

[0015] First, the diffuser is pre-positioned using the support rod. Then, the hydraulic cylinder is activated. Once the hydraulic cylinder reaches its designated position, it automatically energizes the electromagnet, causing it to attract the bottom of the diffuser. After positioning, machining can begin.

[0016] (1) The diffuser is supported by multiple points, so the force is more even and it is not subjected to downward pressure, so it is not easy to deform.

[0017] (2) Using the support column for pre-positioning makes it easy to place the diffuser and ensures a certain level of horizontality.

[0018] (3) It is easy to operate and can significantly improve efficiency.

[0019] (4) The upper end face and outer circle of the diffuser are not affected by the tooling. Once the support is positioned, the processing of the upper end face and outer circle can be completed. Attached Figure Description

[0020] Figure 1 This is the front view of the diffuser to be processed;

[0021] Figure 2 This is the main view of the diffuser precision machining fixture of this utility model;

[0022] Figure 3 This is a top view of the diffuser precision machining fixture of this utility model;

[0023] Figure 4 This is a schematic diagram showing the connection of each component of the diffuser precision machining fixture of this utility model;

[0024] Figure 5 This is a schematic diagram of the electrical connections between corresponding components of the diffuser precision machining fixture of this utility model;

[0025] Figure 6This is a schematic diagram of the diffuser precision machining fixture of this utility model after the diffuser is placed.

[0026] 1. Diffuser; 11. Blade; 12. End face; 2. Base; 3. Hydraulic cylinder; 4. Electromagnet; 5. Screw; 6. Insulating pad; 7. Support column; 8. Solenoid valve; 9. Miniature hydraulic station; 10. Battery. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0028] Embodiments of this utility model:

[0029] like Figures 2-3 As shown, a diffuser precision machining fixture includes a base 2 with several support columns on it. The upper end faces 12 of each support column are coplanar. In this embodiment, there are three support columns distributed around the center circumference of the base 2. The base 2 is for use with a machine tool and is easily implemented, so it is not the focus of this invention. The main design of this invention is how to quickly support and position the diffuser 1 while preventing the diffuser 1 from deforming.

[0030] The support column 7 is used for pre-positioning the diffuser 1, allowing the diffuser 1 to be placed with the blade 11 side facing down on the top of the support column 7. Since the tops of all the support columns 7 are coplanar, the diffuser 1 can be supported and a certain level of horizontality can be ensured.

[0031] The support column 7 is a metal conductive rod, and its bottom is insulated from the base 2. In other embodiments, at least the upper part of the support column is configured as a conductive part, and the support column is electrically connected to the negative terminal of the battery 10.

[0032] Eight hydraulic cylinders 3 are evenly distributed around the center circumference of the base 2. In other embodiments, cylinders 4 to 10 may be selected depending on the situation. An electromagnet 4 is provided on the upper part of the piston rod of the hydraulic cylinder 3, and the positive electrode of the electromagnet 4 is electrically connected to the positive electrode of the battery 10. The electromagnet 4 is connected to the upper part of the piston rod by screws 5, and an insulating pad 6 is provided between the electromagnet 4 and the upper part of the piston rod to ensure that the electromagnet 4 and the hydraulic cylinder 3 are insulated from each other.

[0033] Each hydraulic cylinder 3 has a solenoid valve 8 connected to its oil inlet pipe. The solenoid valve 8 is a normally open solenoid valve, and its two power lines are connected to the electromagnet 4 and the negative terminal of the battery 10, respectively.

[0034] Figure 4 The arrangement of the components and the connections of the wires and oil pipes are shown; Figure 5 The diagram illustrates the electrical connections between the components. Each support column is connected in series with a wire to the negative terminal of battery 10; in this embodiment, battery 10 is a rechargeable battery. The positive electrode of electromagnet 4 is connected in series with a wire to the positive terminal of battery 10. The two power lines of normally open solenoid valve 8 can be connected to the aforementioned wires to achieve electrical connection with electromagnet 4 and the negative terminal of battery 10. Each electromagnet 4 and solenoid valve 8 operates independently. When electromagnet 4 is energized, the corresponding solenoid valve 8 in the energized circuit is energized, and solenoid valve 8 switches from normally open to closed, thus stopping the hydraulic cylinder 3.

[0035] Each hydraulic cylinder 3 has its oil inlet pipe connected to a main oil inlet pipe, and each hydraulic cylinder 3 has its oil return pipe connected to a main oil return pipe. The main oil inlet pipe and the main oil return pipe are connected to the miniature hydraulic station 9.

[0036] The use and principle of the precision machining fixture for diffuser 1 of this utility model:

[0037] The diffuser 1 to be processed is placed on the upper end of the support columns, and pre-positioned by three support columns 7. The blades 11 of the diffuser 1 are facing downwards, as shown below. Figure 6 As shown. After the support is positioned correctly, the upper end face 12 and outer circle of the diffuser 1 are machined. The diffuser 1 is placed as centrally as possible to coordinate with the hydraulic cylinders 3, resulting in a more even distribution of support points. After the diffuser 1 is placed, the micro hydraulic station is started, and the hydraulic cylinders 3 begin to operate. The piston rods rise, and when they rise to the point where the electromagnet 4 contacts the diffuser 1, since the diffuser 1 is also conductive, the positive and negative terminals of the electromagnet 4 are connected. The electromagnet 4 is energized and generates a magnetic attraction, attracting the diffuser 1. The hydraulic cylinders 3 are basically synchronized, so the attraction can be completed synchronously. At the same time, after the electromagnet 4 is energized, the two power lines of the solenoid valve 8 are also connected. After the solenoid valve 8 is energized, it switches from open to closed. At this time, the hydraulic cylinders 3 stop operating, maintaining the position of the attraction support. Then, the diffuser 1 can be precision machined.

[0038] The following are the characteristics of this tooling:

[0039] (5) The diffuser is supported by multiple points, so the force is more even and it is not compressed, so it is not easy to deform.

[0040] (6) Using the support column for pre-positioning makes it easy to place the diffuser and ensures a certain level of horizontality.

[0041] (7) Easy to operate and significantly improves efficiency.

[0042] (8) The upper end face and outer circle of the diffuser are not affected by the tooling. The upper end face and outer circle can be processed by one support positioning.

Claims

1. A diffuser precision machining fixture, characterized in that: Includes a base, on which are provided several support columns. The upper surfaces of each support column are coplanar, and at least the upper part of the support column is a conductive part. The support column is electrically connected to the negative terminal of the battery. The base is equipped with several hydraulic cylinders, and an electromagnet is installed on the upper part of the piston rod of the hydraulic cylinder. The positive electrode of the electromagnet is electrically connected to the positive electrode of the battery. Each hydraulic cylinder has a normally open solenoid valve connected to its oil inlet line. The two power lines of the normally open solenoid valve are connected to the electromagnet and the negative terminal of the battery, respectively.

2. The diffuser precision machining fixture according to claim 1, characterized in that: The support column consists of three columns, distributed around the center circumference of the base.

3. The diffuser precision machining fixture according to claim 1, characterized in that: Each hydraulic cylinder's inlet line is connected to a main inlet line, and each hydraulic cylinder's return line is connected to a main return line. The main inlet line and the main return line are connected to a micro hydraulic power unit.

4. The diffuser precision machining fixture according to claim 1 or 3, characterized in that: The hydraulic cylinders are provided in 4 to 10 units, which are evenly distributed around the center circumference of the base.

5. The diffuser precision machining fixture according to claim 1, characterized in that: The electromagnet is connected to the upper part of the piston rod by screws, and an insulating pad is provided between the electromagnet and the upper part of the piston rod.

6. The diffuser precision machining fixture according to claim 1, characterized in that: The support column is a metal conductive rod, and the bottom of the support column is insulated from the base.

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