Machining tool for annular thin-wall part of aero-engine

Abstract

The utility model provides an aero-engine annular thin-wall part machining tool, and belongs to the technical field of annular thin-wall part machining tools, the aero-engine annular thin-wall part machining tool comprises a tool table, an annular frame is arranged on the tool table, a trepanning mechanism is arranged in the middle of the annular frame, the trepanning mechanism comprises a bracket, a sliding rail is arranged on the bracket, and the sliding rail is connected with a sliding table in a sliding mode. A sliding table is arranged on the bracket, a motor is arranged on the sliding table, a drill bit is arranged at the output end of the motor, a detachable arc-shaped lining plate is arranged on the bracket, and the drill bit penetrates through a round hole in the arc-shaped lining plate. The auxiliary drill bit can accurately drill holes in the diameter direction of the cross section of the annular thin-walled cylinder every time, the risk of inclined drilling is effectively reduced, the situation that an extra stress concentration point is generated on the thin-walled cylinder due to the incorrect hole position is avoided, the overall strength of the structure is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of machining fixtures for annular thin-walled parts, specifically a machining fixture for annular thin-walled parts of aero-engines. Background Technology

[0002] An aircraft engine is a power unit that provides thrust to an aircraft. It is the "heart" of the aircraft, and its performance directly affects the aircraft's performance, efficiency, and safety. A piston engine uses the high-temperature and high-pressure gas generated by burning fuels such as aviation gasoline to drive the piston. The piston converts the reciprocating motion into the rotational motion of the crankshaft through the connecting rod, which in turn drives the propeller to rotate and generate thrust.

[0003] During the manufacturing process of annular thin-walled components in aero-engines, holes need to be drilled into the curved sidewalls of the components. Currently, drilling holes in the annular thin-walled cylinder is done manually, aligning the drill bit with the markings on the component. Sometimes, the direction of the drill bit deviates from the diameter of the cross-section of the annular thin-walled cylinder, creating a risk of drilling off-center. This situation is commonly referred to as hole position offset. Incorrect hole position will create additional stress concentration points on the thin-walled cylinder, reducing the structural strength and fatigue life, and increasing the failure rate. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. Specifically, this utility model provides a machining fixture for annular thin-walled parts of aero-engines, which solves the technical problem mentioned in the background that current drilling is done manually, and sometimes the direction of the drill bit deviates from the cross-sectional diameter direction of the annular thin-walled cylinder, resulting in misaligned drilling.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A machining fixture for annular thin-walled parts of an aero-engine includes a fixture table, an annular frame on the fixture table, a hole-opening mechanism at the middle position of the annular frame, a bracket on the bracket, a slide rail on the slide rail, a sliding table slidably connected to the slide rail, a second motor on the sliding table, a drill bit at the output end of the second motor, and a detachable arc-shaped liner on the bracket, with the drill bit passing through a circular hole in the arc-shaped liner.

[0007] Furthermore, the bracket is also equipped with a cylinder, the output end of which is connected to the bottom of the sliding table.

[0008] Furthermore, the bracket is provided with two mounting holes, each mounting hole is provided with a sliding member, each sliding member includes a sleeve, and each sleeve is provided with a ball bearing at its lower end.

[0009] Furthermore, each of the ball bearings is movably connected to an annular groove, and two annular grooves are respectively disposed on the tooling table and the annular frame.

[0010] Furthermore, a placement slot is provided at the center of the tooling table, and a first motor is installed in the placement slot, with the output end of the first motor connected to the bracket.

[0011] Furthermore, the outer edge of the annular frame is provided with positioning holes at equal intervals for positioning the annular thin-walled component.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, through the design of a tooling table, motor, ring frame, bracket, mounting hole, slide rail, sliding table, motor, drill bit, sliding component, and cylinder, enables the auxiliary drill bit to precisely drill along the cross-sectional diameter of the annular thin-walled cylinder each time during the processing of annular thin-walled parts for aero engines. This effectively reduces the risk of drilling off-center, avoids additional stress concentration points on the thin-walled cylinder due to incorrect hole positions, improves the overall structural strength, extends service life, and reduces the defect rate. Furthermore, the arc-shaped liner closely adheres to the inner wall of the annular thin-walled part, further suppressing deformation of the thin wall during the drilling process. The structure is stable, easy to operate, and has certain practical value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the overall structure of this utility model;

[0017] Figure 3 This is an exploded view of the opening mechanism of this utility model.

[0018] In the diagram: 1. Tooling table; 11. Placement slot; 12. First motor; 13. Ring frame; 131. Positioning hole; 14. Annular groove; 2. Hole opening mechanism; 21. Bracket; 211. Mounting hole; 22. Slide rail; 23. Sliding table; 24. Second motor; 25. Drill bit; 26. Sliding component; 261. Sleeve; 262. Ball bearing; 27. Arc-shaped liner; 28. Cylinder. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the appendix carefully. Figure 1-3 A machining fixture for annular thin-walled parts of an aero-engine includes a fixture table 1, on which an annular frame 13 is provided. A hole-opening mechanism 2 is provided at the middle position of the annular frame 13. The hole-opening mechanism 2 includes a bracket 21, on which a slide rail 22 is provided. A sliding table 23 is slidably connected to the slide rail 22. A second motor 24 is provided on the sliding table 23. A drill bit 25 is provided at the output end of the second motor 24. A detachable arc-shaped liner 27 is provided on the bracket 21, and the drill bit 25 passes through a circular hole in the arc-shaped liner 27.

[0023] Through the above structure, during the machining of the annular thin-walled part of the aero-engine, the auxiliary drill bit 25 can accurately drill along the cross-sectional diameter of the annular thin-walled cylinder every time, effectively reducing the risk of drilling off-center, avoiding the generation of additional stress concentration points on the thin-walled cylinder due to incorrect hole positions, improving the overall strength of the structure, extending its service life, reducing the defect rate, and the structure is stable, easy to operate, and has certain practical value.

[0024] The specific operation is as follows: First, the annular thin-walled component of the aircraft engine that needs to be drilled is installed on the annular frame 13 using bolts. The bolts are tightened in the positioning hole 131. Then, the arc-shaped liner 27 is adjusted so that it is tightly attached to the inner wall of the annular thin-walled component. Then, the first motor 12 is turned on, and the first motor 12 drives the bracket 21 to rotate, pointing the drill bit 25 to the marked drilling position on the annular thin-walled component of the aircraft engine. Then, the cylinder 28 is started, pushing the sliding table 23 to move closer to the annular thin-walled component. At the same time, the second motor 24 drives the drill bit 25 to rotate, and the drill bit 25 drills the annular thin-walled component through the round hole on the arc-shaped liner 27.

[0025] Please refer to the appendix carefully. Figure 1 and attached Figure 2 Each of the ball bearings 262 is movably connected to an annular groove 14. Two annular grooves 14 are respectively set on the tooling table 1 and the annular frame 13. The annular grooves 14 provide a stable slide for the sliding part 26. The tooling table 1 has a placement groove 11 at its center. The placement groove 11 is equipped with a first motor 12, and the output end of the first motor 12 is connected to the bracket 21. The first motor 12 provides a driving force for the rotation of the bracket 21. The outer edge of the annular frame 13 is provided with positioning holes 131 at equal intervals for positioning the annular thin-walled part. The positioning holes 131 are used to position the annular thin-walled part, which facilitates subsequent processing.

[0026] Please refer to the appendix carefully. Figure 1 and attached Figure 3 The bracket 21 is also equipped with a cylinder 28. The output end of the cylinder 28 is connected to the bottom of the sliding table 23. The cylinder 28 provides driving force for the movement of the sliding table 23. The bracket 21 is provided with two mounting holes 211. Each mounting hole 211 is provided with a sliding member 26. Each sliding member 26 includes a sleeve 261. The lower end of each sleeve 261 is provided with a ball bearing 262. The sliding member 26 supports the bracket 21, so that the bracket 21 can perform stable circular motion.

[0027] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A machining fixture for annular thin-walled parts of an aero-engine, comprising a fixture table (1), wherein an annular frame (13) is provided on the fixture table (1), characterized in that, An opening mechanism (2) is provided at the middle position of the ring frame (13). The opening mechanism (2) includes a bracket (21). A slide rail (22) is provided on the bracket (21). A sliding table (23) is slidably connected to the slide rail (22). A second motor (24) is provided on the sliding table (23). A drill bit (25) is provided at the output end of the second motor (24). A detachable arc-shaped liner (27) is provided on the bracket (21), and the drill bit (25) passes through the round hole on the arc-shaped liner (27).

2. The machining fixture for annular thin-walled parts of an aero-engine according to claim 1, characterized in that, The bracket (21) is also equipped with a cylinder (28), the output end of which is connected to the bottom of the sliding table (23).

3. The machining fixture for annular thin-walled parts of an aero-engine according to claim 2, characterized in that, The bracket (21) is provided with two mounting holes (211), each mounting hole (211) is provided with a sliding member (26), each sliding member (26) includes a sleeve (261), and each sleeve (261) is provided with a ball (262) at its lower end.

4. The machining fixture for annular thin-walled parts of an aero-engine according to claim 3, characterized in that, Each of the ball bearings (262) is movably connected to an annular groove (14), and the two annular grooves (14) are respectively set on the tooling table (1) and the annular frame (13).

5. The machining fixture for annular thin-walled parts of an aero-engine according to claim 4, characterized in that, The tooling table (1) has a placement slot (11) at its center. A first motor (12) is installed in the placement slot (11), and the output end of the first motor (12) is connected to the bracket (21).

6. The machining fixture for annular thin-walled parts of an aero-engine according to claim 4, characterized in that, The outer edge of the ring frame (13) is provided with positioning holes (131) at equal intervals for positioning the annular thin-walled part.

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