Fixing tool for hollow blade machining

Abstract

The utility model discloses a fixing tool for processing a hollow blade, and relates to the technical field of aeronautical part processing, the fixing tool comprises a fixing base, a first fixing piece and a second fixing piece, the fixing base is provided with a fixing groove for placing the hollow blade to be processed; the first fixing piece and the second fixing piece are used for limiting movement of the to-be-machined hollow blade relative to the fixing base in the first direction and the second direction correspondingly, and the first direction and the second direction are perpendicular to each other. The fixing action end of the first fixing piece and the first fixing face of the fixing groove are in extrusion contact with the two sides of the to-be-machined hollow blade correspondingly, and the fixing action end of the second fixing piece and the second fixing face of the fixing groove are in extrusion contact with the two ends of the to-be-machined hollow blade correspondingly. By means of the fixing tool, the purpose that fly surface machining can be completed through one-time clamping machining of the hollow blade can be achieved, the positioning force and the clamping force can be adjusted in a segmented mode, use is convenient, and adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation parts processing, in particular to a fixed tooling for processing hollow blades. Background Art

[0002] The stationary blades of aircraft engines are hollow structures. They need to be divided into two pieces, A / B, before processing. The welding surface and the inner cavity of the blade are processed separately. The blade structure consists of a tenon and a blade body. The thickness of the tenon is 22 mm, and the thickness of the blade body is 6 mm. The blade blanks are generally manufactured by die forging. The irregular shape of the die forging blanks makes it impossible to position the blades during processing. The processing requirements of the blade welding surface are high. After processing, the flatness is required to be 0.1 mm and the surface roughness must be within Ra0.4. In order to meet the requirements of part processing, special tooling is designed to make the parts completely fixed and evenly stressed on all sides, so that the parts do not vibrate during processing and no excess internal stress is generated inside, ensuring that the flatness and roughness requirements are met after processing.

[0003] The traditional processing scheme first uses three axes to remove the molded edges around the parts, and makes a vise clamping edge with a relative height difference. When the parts are clamped in the vise, a standard block is used to pad the bottom surface of the parts, and then the flying surface is processed. Because the blade body is thin, the deformation of the parts in this processing scheme is controlled by the clamping force of the vise. When the clamping force is large, the deformation of the parts after processing will also increase; when the clamping force is small, the parts are prone to flying during processing. The above problems make it difficult to control the quality of parts and the state of parts is unstable when processing in large quantities. Utility Model Content

[0004] The purpose of the utility model is to design a fixed tool for processing hollow blades in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] Fixture for hollow blade machining, including:

[0007] A fixed base; the fixed base is provided with a fixed groove for placing the hollow blade to be processed;

[0008] A first fixing member; the first fixing member is used to limit the movement of the hollow blade to be processed relative to the fixed base in a first direction;

[0009] The second fixing member is used to limit the movement of the hollow blade to be processed relative to the fixed base in a second direction, the first direction and the second direction are perpendicular to each other, and when fixing the hollow blade to be processed, the fixed action end of the first fixing member and the first fixed surface of the fixing groove are respectively pressed and contacted with the two sides of the hollow blade to be processed, and the fixed action end of the second fixing member and the second fixed surface of the fixing groove are respectively pressed and contacted with the two ends of the hollow blade to be processed.

[0010] The beneficial effects of the utility model are as follows: the use of the fixing tool can achieve the purpose of completing the flying surface processing of the hollow blade by one clamping process, the positioning and clamping force can be adjusted in sections, the use is convenient, and the adaptability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a fixed tooling for processing hollow blades of the utility model;

[0012] Figure 2 It is a schematic diagram of the exploded structure of the fixed tooling used for processing hollow blades of the utility model;

[0013] The corresponding figures are as follows:

[0014] 1-fixed base, 2-fixed groove, 3-top plate, 4-fixed screw, 5-connecting bolt, 6-hollow blade, 7-first adjusting bolt, 8-first fixing surface, 9-second adjusting bolt, 10-shim plate. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0018] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships that are usually understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0019] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 , Figure 2 As shown, the fixed tooling for processing the hollow blade 6 includes:

[0023] A fixed base 1; a fixed groove 2 for placing the hollow blade 6 to be processed is provided on the fixed base 1;

[0024] The first fixing member is used to limit the movement of the hollow blade 6 to be processed relative to the fixed base 1 in the first direction;

[0025] The second fixing member is used to limit the movement of the hollow blade 6 to be processed relative to the fixed base 1 in the second direction. The first direction and the second direction are perpendicular to each other. When fixing the hollow blade 6 to be processed, the fixed action end of the first fixing member and the first fixed surface 8 of the fixed groove 2 are respectively squeezed and contacted with the two sides of the hollow blade 6 to be processed, and the fixed action end of the second fixing member and the second fixed surface of the fixed groove 2 are respectively squeezed and contacted with the two ends of the hollow blade 6 to be processed.

[0026] The first fixing member comprises:

[0027] The top plate 3; the two sides of the hollow blade 6 to be processed are respectively in extrusion contact with the top plate 3 and the first fixing surface 8 of the fixing groove 2, and the top plate 3 is located in the fixing groove 2;

[0028] Moving part; the moving part is used to adjust the distance between the top plate 3 and the extrusion surface of the fixed groove 2.

[0029] The moving part includes at least one fixing screw 4 . The fixing base 1 is provided with at least one fixing threaded hole. One fixing screw 4 is threadedly connected with one fixing threaded hole. The fixing screw 4 is in compression contact with the top plate 3 .

[0030] The second fixing member includes at least one first adjusting bolt 7. The fixing base 1 is provided with at least one first adjusting threaded hole. A first adjusting screw is threadedly connected with the first adjusting threaded hole. The first adjusting screw is in compression contact with one end of the hollow blade 6 to be processed.

[0031] The first fixing member also includes two groups of second adjusting bolts 9, which are symmetrically arranged on both sides of the fixed base 1, each group of second adjusting bolts 9 includes at least one second adjusting bolt 9, and two groups of second adjusting threaded holes are arranged on the fixed base 1. A second adjusting screw is threadedly connected to a second adjusting threaded hole, and the second adjusting screw is in extrusion contact with one side of the hollow blade 6 to be processed.

[0032] The fixing tool further comprises at least one backing plate 10, two sides of which are in contact with the hollow blade 6 to be processed and the bottom surface of the fixing groove 2 respectively.

[0033] The fixing fixture further includes at least one connecting bolt 5. The backing plate 10 is provided with at least one connecting through hole. The bottom surface of the fixing groove 2 is provided with at least one connecting threaded hole. One connecting bolt 5 passes through one connecting through hole and is threadedly connected with one connecting threaded hole.

[0034] The working principle of the fixed tooling used for processing the hollow blade 6 of the utility model is as follows:

[0035] The number or height of the pads 10 is selected according to the hollow blades 6, and the pads 10 are fixed to the bottom of the fixing groove 2 of the fixing base 1 by the connecting bolts 5, and then the hollow blades 6 are placed in the fixing groove 2, and the hollow blades 6 are located above the pads 10, and then the top plate 3 is placed in the fixing groove 2, and the two sides of the hollow blades 6 are squeezed and contacted with the top plate 3 and the first fixing surface 8 of the fixing groove 2 by the moving parts, and combined with the second adjusting bolt 9, it is realized that the fixing base 1 of the hollow blades 6 to be processed is limited to be in a relatively static state in the first direction; the control of the connection depth between the first adjusting bolt 7 and the first adjusting threaded hole on the fixing base 1 can limit the fixing base 1 of the hollow blades 6 to be processed in a relatively static state in the second direction, and can adapt to hollow blades 6 of different shapes and sizes, the clamping process is simple, and the flying surface processing of the hollow blades 6 can be completed by one clamping process, the positioning and clamping force can be adjusted in sections, the selection of the pads 10, the adjustable fixation of the first fixing part and the second fixing part can adapt to the processing parts of different sizes and shapes.

[0036] The technical solution of the present utility model is not limited to the above-mentioned specific embodiments, and all technical variations made according to the technical solution of the present utility model fall within the protection scope of the present utility model.

Claims

1. A fixed tool for processing hollow blades, characterized in that: include: Fixed base; A fixing groove for placing the hollow blade to be processed is provided on the fixing base; a first fixing member; The first fixing member is used to limit the movement of the hollow blade to be processed relative to the fixing base in a first direction; a second fixing member; The second fixing member is used to limit the movement of the hollow blade to be processed relative to the fixed base in a second direction. The first direction and the second direction are perpendicular to each other. When fixing the hollow blade to be processed, the fixed action end of the first fixing member and the first fixed surface of the fixing groove are respectively pressed and contacted with the two sides of the hollow blade to be processed, and the fixed action end of the second fixing member and the second fixed surface of the fixing groove are respectively pressed and contacted with the two ends of the hollow blade to be processed.

2. The fixing tool for hollow blade processing according to claim 1 is characterized in that: The first fixing member comprises: The top plate; both sides of the hollow blade to be processed are respectively in extrusion contact with the top plate and the first fixed surface of the fixing groove, and the top plate is located in the fixing groove; Moving part; the moving part is used to adjust the distance between the top plate and the extrusion surface of the fixed groove.

3. The fixing tool for hollow blade processing according to claim 2 is characterized in that: The moving part comprises at least one fixing screw rod, and the fixing base is provided with at least one fixing threaded hole. One fixing screw rod is threadedly connected with one fixing threaded hole, and the fixing screw rod is in extrusion contact with the top plate.

4. The fixing tool for hollow blade processing according to claim 1, characterized in that: The second fixing member includes at least one first adjusting bolt, and the fixing base is provided with at least one first adjusting threaded hole. A first adjusting screw is threadedly connected with the first adjusting threaded hole, and the first adjusting screw is in compression contact with one end of the hollow blade to be processed.

5. The fixing tool for processing hollow blades according to any one of claims 1 to 3, characterized in that: The first fixing member also includes two groups of second adjusting bolts, which are symmetrically arranged on both sides of the fixed base, each group of second adjusting bolts includes at least one second adjusting bolt, and two groups of second adjusting threaded holes are arranged on the fixed base. A second adjusting screw is threadedly connected to a second adjusting threaded hole, and the second adjusting screw is in extrusion contact with one side of the hollow blade to be processed.

6. The fixing tool for processing hollow blades according to any one of claims 1 to 4, characterized in that: The fixing tool also includes at least one backing plate, and two sides of the backing plate are respectively in contact with the hollow blade to be processed and the bottom surface of the fixing groove.

7. The fixing tool for hollow blade processing according to claim 6, characterized in that: The fixing fixture also includes at least one connecting bolt, the backing plate is provided with at least one connecting through hole, the bottom surface of the fixing groove is provided with at least one connecting threaded hole, and a connecting bolt passes through a connecting through hole and is threadedly connected with a connecting threaded hole.

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