Tool for fixing aviation aircraft parts

Abstract

The utility model relates to a tool for fixing aviation aircraft parts, which comprises a tool bottom plate, the surface of the tool bottom plate is provided with a horizontal plane and an inclined plane, a first supporting column is arranged between the horizontal plane and the inclined plane, the horizontal plane and the inclined plane are respectively provided with a threaded hole and a pin hole, and the first supporting column is provided with a second supporting column. A part to be machined can be attached to the surface of the tool bottom plate and is fixed through the threaded holes and the pin holes. A part to be machined is fixed through mutual matching of the threaded hole and the pin hole, the limiting precision is high, machining of a machine tool is facilitated, and convenience is brought to production and use.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling equipment, in particular to a tooling for fixing aviation aircraft parts. Background Art

[0002] The processing of aircraft parts is extremely complex. The manufacturing of aircraft parts and aerospace process equipment is characterized by a complex process flow, with major steps nested within smaller ones. Some processes even involve hundreds of steps. Due to the numerous steps and low tolerance for error, production efficiency and cost control are two core indicators of the competitiveness of aircraft parts processing companies. Furthermore, aircraft parts are highly customized. Due to the unique requirements of their application environment, specifications, parameters, and performance, as well as the development of new models and the upgrading of existing models, aircraft parts products are subject to significant customization.

[0003] The authorization announcement number is CN117900869B, which discloses a clamping fixture and processing method for aviation long beam parts. Combined with its specification and drawings, its solution is to make the position of the clamping block more precise and improve the rigidity of the workpiece after clamping by integrating the positioning clamping block and the supporting clamping block with the workpiece and then milling it. At the same time, it can avoid the clamping force of the clamping block from acting on the thin wall, and convert the clamping force acting on the thin wall of the workpiece into a force acting on the clamping block, thereby avoiding the deformation of the workpiece caused by clamping. However, due to the large number of parts on aircraft, similar tooling cannot achieve effective positioning, especially for some joint parts, special tooling is required to fix them so that the machine tool can perform precise processing. Summary of the Invention

[0004] The utility model mainly solves the problems existing in the use of needle tooling and invents a tooling for fixing aviation aircraft parts. The first threaded hole and the fourth threaded hole are used to fix the right side of the part to be processed, and the second threaded hole and the first pin hole are used to fix the left side of the part to be processed. The fourth threaded hole not only plays the role of threaded fixing, but also a hollow locating pin can be installed inside the fourth threaded hole to facilitate the subsequent tightening of the nut of the bolt to the part to be processed, and the limiting accuracy is high.

[0005] The invention objective of the utility model is achieved through the following technical solutions: a tool for fixing aviation aircraft parts, comprising a tool base plate, the surface of the tool base plate is provided with a horizontal surface and an inclined surface, a first support column is provided between the horizontal surface and the inclined surface, and threaded holes and pin holes are provided on the horizontal surface and the inclined surface, and the parts to be processed can be fitted to the surface of the tool base plate and fixed through the threaded holes and pin holes.

[0006] Preferably, the surface of the inclined surface is further provided with a first air-avoiding groove, and the part to be processed is limited by the first supporting column and the first air-avoiding groove after being attached to the surface of the tooling base plate.

[0007] Preferably, the surface of the inclined surface is further provided with a first supporting boss and a second supporting boss, and the first supporting boss is provided with a first threaded hole.

[0008] Preferably, the surface of the inclined surface is further provided with a fourth threaded hole and a fifth threaded hole, which not only enables a detachable connection to the first pressing pad, but also serves to limit the parts to be processed when the first pressing pad is not installed.

[0009] Preferably, the fourth threaded hole and the fifth threaded hole are connected to a first clamping pad by bolts, and a second limiting groove is provided on the first clamping pad. The gap between the second limiting groove and the second supporting boss is used to clamp the end of the joint part.

[0010] Preferably, the surface of the horizontal plane is provided with a pad mounting groove, the pad mounting groove is provided with a second threaded hole and a first pin hole, the second threaded hole runs through the entire tooling base plate, and the interior of the pad mounting groove is also provided with a second clamping pad, and the bolts on the second clamping pad can be removably connected to the inside of the second threaded hole.

[0011] Preferably, a plurality of third threaded holes are provided on both sides of the surface of the horizontal plane close to the first pressing pad, and one end of the part to be processed is fixed through the third threaded hole. This arrangement is to fix the left end portion of the part to be processed.

[0012] Preferably, the cross-sectional area of ​​the inclined surface is larger than the cross-sectional area of ​​the horizontal surface, and this arrangement is for supporting the part to be processed.

[0013] Compared with the prior art, the utility model has the following beneficial effects: 1. The first threaded hole and the fourth threaded hole are used to fix the right side of the part to be processed, and the second threaded hole and the first pin hole are used to fix the left side of the part to be processed, wherein the fourth threaded hole not only plays the role of threaded fixation, but also a hollow locating pin can be installed inside the fourth threaded hole relative to the through hole of the part to be processed, so as to facilitate the subsequent bolt to pass through the locating pin and use the nut to fasten the part to be processed. The high limiting accuracy is convenient for machine tools to process, which brings convenience to production and use; 2. When it is necessary to process a specific position of the part to be processed, after removing the bolt inside the first threaded hole, the right end portion of the joint part is tightened using the gap between the second limiting groove and the second support boss, which brings convenience to production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the utility model;

[0016] Figure 3 This is an exploded view of the present invention.

[0017] Markings in the figure: 1. Tooling base plate; 11. Horizontal plane; 12. Inclined plane; 13. First supporting column; 14. First air-avoiding groove; 15. Third threaded hole; 111. Pad mounting groove; 112. Second threaded hole; 113. First pin hole; 121. First supporting boss; 122. Second supporting boss; 123. First threaded hole; 124. Fourth threaded hole; 125. Fifth threaded hole; 2. First clamping pad; 21. Second limiting groove; 3. Second clamping pad. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0019] like Figures 1 to 3 As shown, a tool for fixing aviation aircraft parts includes a tool base plate 1 made of aluminum alloy, and the surface of the tool base plate 1 is provided with a horizontal plane 11 and an inclined plane 12, and the cross-sectional area of ​​the inclined plane 12 is larger than the cross-sectional area of ​​the horizontal plane 11. This setting is to support the part to be processed to prevent the part from being insufficiently rigid during processing, which may cause the tool to vibrate. A first supporting column 13 is provided between the horizontal plane 11 and the inclined plane 12, and a first air avoidance groove 14 is also provided on the surface of the inclined plane 12. After the part to be processed is attached to the surface of the tool base plate 1, it is limited by the first supporting column 13 and the first air avoidance groove 14. It should be noted that at this time, it only serves as a preliminary limit relative to the part to be processed, and it still has a slight shake, so that it is convenient for the next step of fixation after being placed in this way.

[0020] In this embodiment, the horizontal surface 11 and the inclined surface 12 are both provided with threaded holes and pin holes, and the parts to be processed can be fitted on the surface of the tooling base plate 1 and fixed through the threaded holes and pin holes. Specifically, the surface of the inclined surface 12 is further provided with a first supporting boss 121 and a second supporting boss 122, and the first supporting boss 121 is provided with a first threaded hole 123, and the surface of the inclined surface 12 is further provided with a fourth threaded hole 124 and a fifth threaded hole 125. The surface of the horizontal surface 11 is provided with a pad mounting groove 111, and the pad mounting groove 111 is provided with a second threaded hole 112 and a first pin hole 113, and the second threaded hole 112 is The tool base plate 1 is penetrated through. After such setting, two through holes are provided on the right side surface of the part to be processed, which correspond to the first threaded hole 123 and the fourth threaded hole 124 respectively. When limiting, a bolt can be used to pass through one of the through holes and connected to the inside of the first threaded hole 123. Due to the difference in diameter, a hollow locating pin is installed inside the other through hole. Part of the hollow locating pin is inside the tool base plate 1, and part is inside the part. The external bolt passes through the hollow locating pin and is connected to the inside of the fourth threaded hole 124. The nut on the top of the bolt presses the part to be processed, thereby fixing the right side of the part to be processed.

[0021] A countersunk hole and a limiting cylinder are provided at the bottom left side of the part to be processed, which correspond to the second threaded hole 112 and the first pin hole 113 respectively. A bolt can be used to pass through the second threaded hole 112 and connect to the inside of the countersunk hole. In this process, the limiting cylinder is always stuck inside the first pin hole 113, so as to achieve fixed installation of the left side of the part to be processed. After the two sides are fixed, the five-axis machine tool can start preliminary processing of the part.

[0022] In this embodiment, the fourth threaded hole 124 and the fifth threaded hole 125 are connected to the first clamping pad 2 by bolts, and the first clamping pad 2 is provided with a second limiting groove 21, and the interior of the pad mounting groove 111 is further provided with a second clamping pad 3, and the bolts on the second clamping pad 3 can be detachably connected to the interior of the second threaded hole 112. The surface of the horizontal plane 11 is close to the two sides of the first clamping pad 2 and is further provided with a plurality of third threaded holes 15. After such arrangement, since the preliminarily processed parts already have a certain shape, it is necessary to treat the processed parts relative to the tooling base plate 1. The position of the first supporting boss 121 is to be processed, so the bolt inside the first threaded hole 123 needs to be removed, and the gap between the second limiting groove 21 and the second supporting boss 122 is used to compress the right end of the joint part, and then the left end of the part to be processed is fixed by bolts through the third threaded hole 15. It should be noted that the second clamping pad 3 needs to be removed during this processing because the part needs to be processed at this position to prevent the tool from hitting the bolts on the second clamping pad 3. However, in the previous processing step, the second clamping pad 3 needs to be installed inside the pad mounting groove 111.

[0023] Working principle and usage of this utility model:

[0024] Two through holes are provided on the right surface of the part to be processed, which correspond to the first threaded hole 123 and the fifth threaded hole 125 respectively. When limiting, a bolt can be used to pass through one of the through holes and connect to the inside of the first threaded hole 123. Due to the difference in diameter, a hollow locating pin is installed inside the other through hole. Part of the hollow locating pin is inside the tooling base plate 1, and part is inside the part. The external bolt passes through the hollow locating pin and is connected to the inside of the fourth threaded hole 124. The nut on the top of the bolt presses the part to be processed, thereby achieving fixation of the right side of the part to be processed. A countersunk hole and a limiting column are provided at the bottom left of the part to be processed, which correspond to the second threaded hole 112 and the first pin hole 113 respectively. At this time, the second clamping pad 3 is installed inside the pad mounting groove 111, and then the second clamping pad 3 is used. The bolt is passed through the second threaded hole 112 to connect to the inside of the countersunk hole, and in this process the limiting column passes through the through hole of the second clamping pad 3 and is always stuck in the first pin hole 113, so as to achieve fixed installation on the left side of the part to be processed. After the fixation of both sides is completed, the five-axis machine tool can start preliminary processing of the part. Since the part after preliminary processing already has a certain shape, it is necessary to process the position of the part to be processed relative to the first supporting boss 121 on the tooling base plate 1. Therefore, it is necessary to remove the bolt inside the first threaded hole 123, and use the gap between the second limiting groove 21 and the second supporting boss 122 to compress the right end of the joint part. Then the left end of the part to be processed is fixed by a bolt through the third threaded hole 15. After the fixation is completed, the five-axis machine tool can start to continue processing.

[0025] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A tool for fixing aircraft parts, comprising a tool base plate (1), characterized in that: The surface of the tooling base plate (1) is provided with a horizontal surface (11) and an inclined surface (12), a first support column (13) is provided between the horizontal surface (11) and the inclined surface (12), and threaded holes and pin holes are provided on the horizontal surface (11) and the inclined surface (12), so that the parts to be processed can be attached to the surface of the tooling base plate (1) and fixed through the threaded holes and the pin holes.

2. The tooling for fixing aircraft parts according to claim 1, characterized in that: The surface of the inclined surface (12) is further provided with a first air-avoiding groove (14); after the part to be processed is attached to the surface of the tooling base plate (1), it is limited by the first supporting column (13) and the first air-avoiding groove (14).

3. The tool for fixing aircraft parts according to claim 2, characterized in that: The surface of the inclined surface (12) is further provided with a first supporting boss (121) and a second supporting boss (122), and the first supporting boss (121) is provided with a first threaded hole (123).

4. The tool for fixing aircraft parts according to claim 3, characterized in that: The surface of the inclined surface (12) is further provided with a fourth threaded hole (124) and a fifth threaded hole (125).

5. The tool for fixing aircraft parts according to claim 4, characterized in that: The fourth threaded hole (124) and the fifth threaded hole (125) are connected to a first pressing pad (2) via bolts. A second limiting groove (21) is provided on the first pressing pad (2). The gap between the second limiting groove (21) and the second supporting boss (122) is used to compress the end of the joint part.

6. The tool for fixing aircraft parts according to claim 5, characterized in that: The surface of the horizontal plane (11) is provided with a pad installation groove (111), and the pad installation groove (111) is provided with a second threaded hole (112) and a first pin hole (113), the second threaded hole (112) runs through the entire tooling base plate (1), and the interior of the pad installation groove (111) is also provided with a second clamping pad (3), and the bolt on the second clamping pad (3) can be detachably connected to the interior of the second threaded hole (112).

7. The tool for fixing aircraft parts according to claim 6, characterized in that: A plurality of third threaded holes (15) are also provided on both sides of the surface of the horizontal plane (11) close to the first pressing pad (2), and one end of the part to be processed is fixed through the third threaded hole (15).

8. The tool for fixing aircraft parts according to any one of claims 1 to 7, characterized in that: The cross-sectional area of ​​the inclined surface (12) is greater than the cross-sectional area of ​​the horizontal surface (11).

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