Positioning device for machining inlet guide vanes of centrifugal compressor

Abstract

The utility model discloses a positioning device for centrifugal compressor inlet guide vane processing belongs to centrifugal compressor part processing technical field, including mounting seat and guide vane body, be provided with base on the mounting seat, be provided with external thread ring on the top outside on base, have the axial locking nut with external thread ring on screwing, open the sleeve chamber in the inside of base, be provided with the conical sleeve in the inside of sleeve chamber, be provided with the locating post in the bottom of guide vane body, the bottom of locating post inserts into the inside of sleeve chamber through axial locking nut and conical sleeve in proper order, the utility model discloses, through multistage positioning structure cooperation effect, has realized centrifugal compressor inlet guide vane in the high accuracy axial and circumferential positioning in the processing process, and the clamping process is simple and quick, and the manual adjustment time is reduced, the design of conical sleeve and conical locating pin has strengthened the self-centering ability and fault tolerance, reduced the operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal compressor parts processing technology, specifically a positioning device for processing centrifugal compressor inlet guide vanes. Background Technology

[0002] Centrifugal compressors, also known as "vortex compressors," are a type of compressor. Their structure and operating principle are similar to centrifugal blowers, but they are always multi-stage. They can achieve higher gas pressure, larger processing capacity, and higher efficiency. The exhaust pressure is higher than 0.015 MPa, and the gas mainly flows radially. They are also called radial flow compressors.

[0003] The above-mentioned technical conditions also have shortcomings: In the existing centrifugal compressor inlet guide vane processing, simple fixtures or general positioning devices are often used for clamping. These devices often have problems such as low positioning accuracy, poor clamping stability, and cumbersome adjustment steps. Especially when machining on a five-axis machine tool, it is difficult to ensure the circumferential and axial positioning of the guide vane at the same time, resulting in large machining errors and low repeatability, which affects the forming quality of the blade profile and production efficiency. In addition, the existing devices require overall readjustment when replacing parts, which increases non-machining time and cannot meet the needs of mass production.

[0004] Based on this, the present invention designs a positioning device for machining the inlet guide vane of a centrifugal compressor to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for machining the inlet guide vanes of a centrifugal compressor, so as to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for machining inlet guide vanes of a centrifugal compressor, comprising a mounting base and a guide vane body. A base is provided on the mounting base, and an external threaded ring is provided on the top outer side of the base. An axial locking nut is threaded onto the external threaded ring. A sleeve cavity is provided inside the base, and a conical sleeve is provided inside the sleeve cavity. A positioning post is provided at the bottom of the guide vane body. The bottom of the positioning post passes through the axial locking nut and the conical sleeve in sequence and is inserted into the sleeve cavity. A circumferential positioning cavity communicating with the sleeve cavity is provided on the base. A circumferential threaded positioning pin is threaded onto the base and located at the circumferential positioning cavity. A positioning hole is provided at the bottom of the positioning post, and one end of the circumferential threaded positioning pin passes through the circumferential positioning cavity and is inserted into the positioning hole.

[0007] By adopting the above technical solution, the circumferential positioning of the guide vane body can be quickly achieved by utilizing the cooperation between the circumferential threaded locating pin and the locating hole, ensuring that the guide vane will not rotate or shift during the processing, thereby improving positioning accuracy and clamping efficiency.

[0008] Preferably, the bottom of the base is provided with an axial positioning cavity, and an axial threaded positioning pin is threadedly connected to the base and located in the axial positioning cavity. One end of the axial threaded positioning pin passes through the axial positioning cavity and abuts against the bottom end of the positioning column.

[0009] By adopting the above technical solution, the axial positioning is completed in advance by pressing the bottom end of the positioning column with the axial threaded positioning pin, which provides a reference for circumferential positioning, simplifies the operation process, and reduces cumulative errors.

[0010] Preferably, the mounting base has multiple mounting slots.

[0011] By adopting the above technical solution, the multiple mounting slots on the mounting base facilitate the rapid overall installation of the device onto a five-axis machine tool, enhancing adaptability and stability, and reducing installation complexity.

[0012] Preferably, the end of the circumferential threaded locating pin is tapered and adapted to the locating hole.

[0013] By adopting the above technical solution, the tapered end of the circumferential threaded locating pin is adapted to the locating hole, allowing for smooth insertion with a certain deviation, reducing the alignment accuracy requirements, and improving the ease of operation and fault tolerance.

[0014] In summary, this application has the following beneficial technical effects: through the synergistic effect of the multi-level positioning structure, high-precision axial and circumferential positioning of the centrifugal compressor inlet guide vane is achieved during the machining process, the clamping process is simple and quick, and the manual adjustment time is reduced; the design of the conical sleeve and conical positioning pin enhances the self-centering ability and fault tolerance, and reduces the difficulty of operation; the overall device has a compact structure, which is easy to integrate into a five-axis machine tool, significantly improves the machining accuracy and production efficiency of the blade profile, and is particularly suitable for batch processing scenarios. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the front structure of this embodiment; Figure 3 This is an exploded view illustrating the structure of this embodiment.

[0017] The attached diagram lists the components represented by each number as follows: 1. Mounting base; 2. Base; 3. External threaded ring; 4. Axial locking nut; 5. Guide vane body; 6. Circumferential positioning cavity; 7. Circumferential threaded positioning pin; 8. Mounting groove; 9. Axial positioning cavity; 10. Axial threaded positioning pin; 11. Sleeve cavity; 12. Tapered sleeve; 13. Positioning pin; 14. Positioning hole. Detailed Implementation

[0018] 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 without creative effort are within the protection scope of the present utility model.

[0019] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0020] A positioning device for machining inlet guide vanes of a centrifugal compressor includes a mounting base 1 and a guide vane body 5. A base 2 is provided on the mounting base 1, and an external threaded ring 3 is provided on the top outer side of the base 2. An axial locking nut 4 is threaded onto the external threaded ring 3. A sleeve cavity 11 is opened inside the base 2, and a conical sleeve 12 is provided inside the sleeve cavity 11. A positioning pin 13 is provided at the bottom of the guide vane body 5. The bottom of the positioning pin 13 passes through the axial locking nut 4 and the conical sleeve 12 in sequence and is inserted into the sleeve cavity 11. A circumferential positioning cavity 6 communicating with the sleeve cavity 11 is opened on the base 2. A circumferential threaded positioning pin 7 is threaded onto the base 2 and located at the circumferential positioning cavity 6. A positioning hole 14 is opened at the bottom of the positioning pin 13. One end of the circumferential threaded positioning pin 7 passes through the circumferential positioning cavity 6 and is inserted into the positioning hole 14, thereby circumferentially positioning the guide vane body 5.

[0021] Furthermore, an axial positioning cavity 9 is provided at the bottom of the base 2. An axial threaded positioning pin 10 is threadedly connected to the base 2 at the axial positioning cavity 9. One end of the axial threaded positioning pin 10 passes through the axial positioning cavity 9 and abuts against the bottom end of the positioning column 13, thereby enabling the guide vane body 5 to be axially positioned in advance, facilitating subsequent circumferential positioning and improving the convenience of operation.

[0022] Furthermore, multiple mounting slots 8 are provided on the mounting base 1, through which the device can be installed as a whole onto the machining position of the five-axis machine tool, so as to carry out subsequent guide vane machining and forming.

[0023] Furthermore, the end of the circumferential threaded locating pin 7 is tapered and adapted to the locating hole 14, so that the circumferential threaded locating pin 7 can be inserted into the locating hole 14 without complete alignment, thereby improving the convenience of operation.

[0024] The implementation principle of this embodiment is as follows: First, the axial threaded locating pin 10 is screwed into the axial locating cavity 9 at the bottom of the base 2 to initially define the axial position of the guide vane body 5; then, the tapered sleeve 12 is placed into the sleeve cavity 11 of the base 2, and self-centering is achieved by using the tapered surface fit; next, the axial locking nut 4 is threaded onto the external threaded ring 3 and slightly tightened to provide basic support; the locating pin 13 at the bottom of the guide vane body 5 is inserted into the sleeve cavity 11 through the axial locking nut 4 and the tapered sleeve 12 in sequence; then, the circumferential threaded locating pin 7 is inserted into the circumferential locating cavity 6, and the guide vane body 5 is rotated so that the end of the locating pin 7 enters the locating hole 14 to complete the circumferential positioning; finally, the axial locking nut 4, the axial threaded locating pin 10, and the circumferential threaded locating pin 7 are adjusted a second time to completely restrict each degree of freedom, ensuring processing stability. After processing, when replacing the next part, it is only necessary to loosen the circumferential threaded locating pin 7 and the axial locking nut 4 for quick replacement, which greatly improves the efficiency of continuous operation.

[0025] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., 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, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device for machining inlet guide vanes of a centrifugal compressor, comprising a mounting base (1) and a guide vane body (5), characterized in that: The mounting base (1) is provided with a base (2), and an external threaded ring (3) is provided on the top outer side of the base (2). An axial locking nut (4) is threaded onto the external threaded ring (3). A sleeve cavity (11) is provided inside the base (2). A conical sleeve (12) is provided inside the sleeve cavity (11). A positioning post (13) is provided at the bottom of the guide vane body (5). The bottom of the positioning post (13) passes through the axial locking nut (4) and the conical sleeve (12) in sequence and is inserted into the sleeve cavity (11). A circumferential positioning cavity (6) communicating with the sleeve cavity (11) is provided on the base (2). A circumferential threaded positioning pin (7) is threaded onto the base (2) and located at the circumferential positioning cavity (6). A positioning hole (14) is provided at the bottom of the positioning post (13). One end of the circumferential threaded positioning pin (7) passes through the circumferential positioning cavity (6) and is inserted into the positioning hole (14).

2. The positioning device for machining the inlet guide vanes of a centrifugal compressor according to claim 1, characterized in that: The base (2) is also provided with an axial positioning cavity (9) at the bottom. An axial threaded positioning pin (10) is threadedly connected to the base (2) at the axial positioning cavity (9). One end of the axial threaded positioning pin (10) passes through the axial positioning cavity (9) and abuts against the bottom end of the positioning column (13).

3. The positioning device for machining the inlet guide vanes of a centrifugal compressor according to claim 1, characterized in that: The mounting base (1) has multiple mounting slots (8).

4. The positioning device for machining the inlet guide vanes of a centrifugal compressor according to claim 1, characterized in that: The end of the circumferential threaded locating pin (7) is tapered and adapted to the locating hole (14).

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