Positioning and clamping tool for processing parts of an aircraft

Abstract

This utility model discloses a positioning and clamping fixture for machining aircraft parts, relating to the field of positioning and clamping technology. It includes: a clamping box, which is hollow inside; a hollow circular shaft installed inside the clamping box, with a set of raised inclined surfaces fixedly connected to the upper end of the hollow circular shaft. The set of raised inclined surfaces and the hollow circular shaft form a set of track grooves, and each of the raised inclined surfaces is provided with a first vertical groove, each first vertical groove penetrating the hollow circular shaft; symmetrical mounting seats, each fixedly connected with a symmetrical fixing ring; and a set of jaws, each provided with an inclined groove and a second vertical groove. The technical problem this utility model aims to solve is to provide a positioning and clamping fixture for machining aircraft parts. By employing adjustable jaws, it achieves clamping of parts of different sizes. Supporting circular blocks are used to position the lower end of the parts. When the motor rotates, it drives the parts to rotate, facilitating subsequent machining.

Description

Technical Field

[0001] This utility model relates to the field of positioning and clamping technology, specifically to a positioning and clamping tooling for processing aircraft parts. Background Technology

[0002] Aircraft components are the basic units that make up all the systems of an aircraft. They are diverse in type and function. These include structural components, power system components, and navigation and control system components: these are crucial for ensuring safe and efficient flight, mainly including various navigation equipment, communication equipment, and flight control systems. Classified by manufacturing process, they include investment castings, precision machined parts, and permanent mold and shell-type aluminum castings. Precision machined parts employ four-axis and five-axis precision machining processes, such as motor housings, end caps, and drive shafts.

[0003] For some circular motor housings, end caps, drive shafts, etc., positioning and clamping fixtures are required during machining. Existing technology, such as the utility model of a fixing fixture for machining automotive drive shafts (authorization number CN220408504U), solves the problems mentioned in the background art, namely that existing fixing fixtures are connected to the machining machine and cannot be used independently, and that the fixtures on the machining machine are of a single model and cannot be adjusted for different drive shafts.

[0004] Currently, there is a lack of a positioning and clamping fixture for machining aircraft parts that can clamp shaft parts of different sizes, position the lower end of the parts, and rotate the parts to facilitate subsequent machining. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a positioning and clamping fixture for processing aircraft parts. By using adjustable jaws, parts of different sizes can be clamped. By using support blocks, the lower end of the parts can be positioned. When the motor rotates, the parts are rotated, which facilitates subsequent processing.

[0006] This utility model achieves its purpose through the following technical solution: A positioning and clamping fixture for machining aircraft parts, characterized by comprising: a clamping box, which is hollow inside; a hollow circular shaft installed in the clamping box, the upper end of the hollow circular shaft being fixedly connected to a set of protruding inclined surfaces, the set of protruding inclined surfaces and the hollow circular shaft forming a set of track grooves, the set of protruding inclined surfaces being respectively provided with a first vertical groove, each of the first vertical grooves penetrating the hollow circular shaft; symmetrical mounting seats, respectively fixedly connected to symmetrical fixing rings; a set of jaws, respectively provided with inclined grooves and second vertical grooves, each of the protruding inclined surfaces being respectively disposed in a corresponding inclined groove, each of the jaws being respectively disposed in a corresponding track groove; a circular ring installed in the symmetrical fixing rings, the circular ring being fixedly connected to a set of guide tubes, each of the guide tubes being respectively provided with a guide rod; a set of power blocks, respectively fixedly connected to the corresponding guide rods, each of the power blocks being respectively disposed in a corresponding second vertical groove, each of the power blocks being respectively disposed in a corresponding first vertical groove. As the ring moves along the height direction, it pushes the jaws to move radially, thereby changing the jaw composition area and enabling the clamping of shaft parts of different diameters to facilitate subsequent machining.

[0007] As an optimization, the clamping box is fixedly connected to a cylinder, and the piston rod of the cylinder is fixedly connected to a mounting rod. The clamping box is provided with a through groove corresponding to the mounting rod, and the mounting rod is fixedly connected to the corresponding mounting seat. By using a cylinder to drive the linear reciprocating motion of the mounting seat, the movement of components such as the chuck is achieved. The thrust and pull of the cylinder can be adjusted according to actual processing requirements to ensure that the chuck can stably and accurately clamp or release shaft parts. The through groove not only provides movement space for the mounting rod but also serves as a guide, ensuring the linearity and stability of the movement of the mounting rod and the mounting seat.

[0008] As an optimization, a set of guide rods are fixedly connected inside the clamping box, with each guide rod passing through a corresponding mounting base. The guide rods provide precise guidance for the vertical movement of the mounting base, ensuring its stability and accuracy during movement. This allows the entire clamping fixture to maintain high stability and precision during machining, thereby improving the machining quality of aircraft parts.

[0009] As an optimization, each power block is fixedly connected to its corresponding guide tube by a spring, and each spring is looped around its corresponding guide rod. The springs provide elastic force for the power block to reset, ensuring that the power block can quickly and accurately return to its initial position after the chuck completes its release action.

[0010] As an optimization, the hollow circular shaft is fixedly connected to the driven bevel gear, the clamping housing is fixedly connected to the motor, the output shaft of the motor passes through the clamping housing, and the output shaft of the motor is fixedly connected to the driving bevel gear. The driving bevel gear meshes with the driven bevel gear. The hollow circular shaft is connected to the clamping housing by a bearing, and the annular bearing is connected to the symmetrical fixed ring. After the motor starts, its output shaft drives the driving bevel gear to rotate. Since the driving bevel gear and the driven bevel gear mesh with each other, the driven bevel gear is driven to rotate. The rotation of the driven bevel gear causes the hollow circular shaft fixedly connected to it to rotate on the clamping housing, thereby driving the circular part to rotate.

[0011] As an optimization, the clamping box is fixedly connected to a mounting plate, and the mounting plate is fixedly connected to an electric push rod.

[0012] As an optimization, the push rod of the electric actuator is fixedly connected to a support block, and the support block is concentrically arranged with the hollow circular shaft. By controlling the extension and retraction of the electric actuator, the support block moves along the height direction, thereby achieving the positioning of the lower end of the shaft-like parts.

[0013] Compared with related technologies, the positioning and clamping fixture for machining aircraft parts provided by this utility model has the following advantages: First, this positioning and clamping fixture achieves automatic rotation of shaft-type parts through the cooperation of a motor, driving bevel gear, and driven bevel gear, which greatly improves processing efficiency and reduces the time and cost of manual operation. Second, the electric push rod and support block design facilitate precise positioning of the lower end of the shaft-type parts, ensuring processing accuracy and quality. Third, the entire fixture has a reasonable structural design, with stable connections between components and smooth operation, effectively reducing the failure rate and extending the service life of the equipment. Finally, this positioning and clamping fixture also has good versatility and expandability, allowing for adjustments and optimizations to meet different processing needs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 1 ; Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the present invention. Figure 2 ; Figure 4 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ; Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ; Figure 6 This is a partial three-dimensional structural diagram of the present invention. Figure 3 .

[0015] In the diagram: 1. Clamping box; 2. Driven bevel gear; 3. Mounting plate; 4. Electric push rod; 5. Motor; 6. Cylinder; 7. Through slot; 8. Mounting rod; 9. Hollow round shaft; 10. Driving bevel gear; 11. Guide vertical rod; 12. Mounting base; 13. Protruding inclined surface; 14. First vertical slot; 15. Track slot; 16. Fixing ring; 17. Supporting round block; 18. Power block; 19. Claw; 20. Inclined slot; 21. Guide tube; 22. Spring; 23. Guide rod; 24. Ring; 25. Second vertical slot. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1: A positioning and clamping fixture for machining aircraft parts, comprising: a clamping housing 1, which is hollow inside; a hollow round shaft 9, installed inside the clamping housing 1, the upper end of the hollow round shaft 9 is fixedly connected to a set of protruding inclined surfaces 13, the set of protruding inclined surfaces 13 and the hollow round shaft 9 forming a set of track grooves 15, the set of protruding inclined surfaces 13 are respectively provided with first vertical grooves 14, each of the first vertical grooves 14 passing through the hollow round shaft 9; symmetrical mounting seats 12, respectively fixedly connected to symmetrical fixing rings 16; a set of jaws 19, respectively provided with inclined grooves 20 and second... A vertical groove 25, with each of the protruding inclined surfaces 13 respectively disposed within a corresponding inclined groove 20, and each of the jaws 19 respectively disposed within a corresponding track groove 15; a circular ring 24, installed within symmetrical fixed rings 16, is fixedly connected to a set of guide tubes 21, each guide tube 21 containing a guide rod 23; a set of power blocks 18, respectively fixedly connected to the corresponding guide rods 23, each power block 18 disposed within a corresponding second vertical groove 25, and each power block 18 disposed within a corresponding first vertical groove 14. When the circular ring 24 moves along the height direction, it pushes the jaws 19 to move radially, realizing a change in the area composed of the jaws 19, enabling the clamping of shaft parts of different diameters to facilitate subsequent processing.

[0018] The clamping housing 1 is fixedly connected to a cylinder 6, and the piston rod of the cylinder 6 is fixedly connected to a mounting rod 8. The clamping housing 1 has a through groove 7 corresponding to the mounting rod 8, and the mounting rod 8 is fixedly connected to the corresponding mounting seat 12. Driven by the cylinder 6, the mounting seat 12 achieves linear reciprocating motion, which in turn drives the movement of components such as the chuck 19. The thrust and pull of the cylinder 6 can be adjusted according to actual processing requirements to ensure that the chuck 19 can stably and accurately clamp or release shaft parts. The through groove 7 not only provides movement space for the mounting rod 8 but also serves as a guide, ensuring the linearity and stability of the movement of the mounting rod 8 and the mounting seat 12.

[0019] Each of the power blocks 18 is fixedly connected to the corresponding guide tube 21 by a spring 22, and each spring 22 is respectively looped around the corresponding guide rod 23. The springs 22 provide elastic force for the reset of the power blocks 18, ensuring that the power blocks 18 can quickly and accurately return to their initial position after the pawl 19 completes the release action.

[0020] The working principle of the positioning and clamping fixture for machining aircraft parts provided by this utility model is as follows: When the shaft part is placed in the area of ​​the jaw 19, the cylinder 6 is controlled to retract. The cylinder 6 drives the mounting rod 8 to move along the slot 7. The mounting rod 8 drives the mounting seat 12 to move. The mounting seat 12 drives the fixing ring 16 to move. The fixing ring 16 drives the ring 24 to move. The ring 24 drives the guide tube 21, guide rod 23, spring 22 and power block 18 to move. The power block 18 drives the jaw 19 to move towards each other in the track groove 15. The protruding inclined surface 13 moves relative to each other along the inclined groove 20, so that the jaw 19 clamps the shaft part.

[0021] Example 2: This example further elaborates on Example 1. The hollow circular shaft 9 is fixedly connected to the driven bevel gear 2, and the clamping housing 1 is fixedly connected to the motor 5. The output shaft of the motor 5 passes through the clamping housing 1 and is fixedly connected to the driving bevel gear 10. The driving bevel gear 10 meshes with the driven bevel gear 2. The hollow circular shaft 9 is connected to the clamping housing 1 by a bearing, and the circular ring 24 is connected to the symmetrical fixed ring 16 by a bearing. After the motor 5 starts, its output shaft drives the driving bevel gear 10 to rotate. Since the driving bevel gear 10 and the driven bevel gear 2 mesh with each other, the driven bevel gear 2 is driven to rotate. The rotation of the driven bevel gear 2 causes the hollow circular shaft 9, which is fixedly connected to it, to rotate on the clamping housing 1, thereby driving the circular part to rotate.

[0022] The working principle of the positioning and clamping fixture for machining aircraft parts provided by this utility model is as follows: When a part needs to be rotated, the control motor 5 rotates, the motor 5 drives the driving bevel gear 10 to rotate, the driving bevel gear 10 drives the driven bevel gear 2 to rotate, the driven bevel gear 2 drives the hollow round shaft 9 to rotate, the hollow round shaft 9 drives the chuck 19 and the power block 18 to rotate, the power block 18 drives the guide rod 23, the spring 22, the guide tube 21 and the ring 24 to rotate, and the chuck 19 drives the round part to rotate.

[0023] Example 3: This example is a further elaboration based on Example 1 or 2. The clamping box 1 is fixedly connected to the mounting plate 3, and the mounting plate 3 is fixedly connected to the electric push rod 4.

[0024] The electric push rod 4 is fixedly connected to the support block 17, which is concentrically arranged with the hollow circular shaft 9. By controlling the extension and retraction of the electric push rod 4, the support block 17 can move along the height direction, thereby positioning the lower end of the shaft-like parts.

[0025] Example 4: This example further elaborates on Example 1, 2, or 3. A set of guide rods 11 are fixedly connected inside the clamping housing 1, with each guide rod 11 passing through a corresponding mounting base 12. The guide rods 11 provide precise guidance for the vertical movement of the mounting base 12, ensuring its stability and accuracy during movement. This allows the entire clamping fixture to maintain high stability and precision during processing, thereby improving the processing quality of aircraft parts.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning and clamping fixture for machining aircraft parts, characterized in that, include: Clamping box (1), which is hollow inside; A hollow round shaft (9) is installed inside the clamping box (1). A set of protruding inclined surfaces (13) is fixedly connected to the upper end of the hollow round shaft (9). The set of protruding inclined surfaces (13) and the hollow round shaft (9) form a set of track grooves (15). The set of protruding inclined surfaces (13) are respectively provided with first vertical grooves (14). Each first vertical groove (14) passes through the hollow round shaft (9). Symmetrical mounting bases (12) are respectively fixedly connected to symmetrical fixing rings (16); A set of claws (19) are respectively provided with inclined grooves (20) and second vertical grooves (25). Each of the protruding inclined surfaces (13) is respectively provided in the corresponding inclined grooves (20), and each of the claws (19) is respectively provided in the corresponding track grooves (15). A circular ring (24) is installed inside the symmetrical fixed ring (16). The circular ring (24) is fixedly connected to a set of guide tubes (21), and each guide tube (21) is provided with a guide rod (23). A set of power blocks (18) are fixedly connected to the corresponding guide rods (23). Each power block (18) is set in the corresponding second vertical groove (25) and each power block (18) is set in the corresponding first vertical groove (14).

2. The positioning and clamping fixture for machining aircraft parts according to claim 1, characterized in that: The clamping box (1) is fixedly connected to the cylinder (6), the piston rod of the cylinder (6) is fixedly connected to the mounting rod (8), the clamping box (1) is provided with a through groove (7) corresponding to the mounting rod (8), and the mounting rod (8) is fixedly connected to the corresponding mounting seat (12).

3. The positioning and clamping fixture for machining aircraft parts according to claim 2, characterized in that: A set of guide rods (11) are fixedly connected inside the clamping box (1), and each guide rod (11) passes through the corresponding mounting base (12).

4. The positioning and clamping fixture for machining aircraft parts according to claim 1, characterized in that: Each of the power blocks (18) is fixedly connected to the corresponding guide tube (21) by a spring (22), and each spring (22) is looped around the corresponding guide rod (23).

5. The positioning and clamping fixture for machining aircraft parts according to claim 1, characterized in that: The hollow round shaft (9) is fixedly connected to the driven bevel gear (2), the clamping box (1) is fixedly connected to the motor (5), the output shaft of the motor (5) passes through the clamping box (1), the output shaft of the motor (5) is fixedly connected to the driving bevel gear (10), the driving bevel gear (10) meshes with the driven bevel gear (2), the hollow round shaft (9) is connected to the clamping box (1) by a bearing, and the ring (24) is connected to the symmetrical fixed ring (16) by a bearing.

6. The positioning and clamping fixture for machining aircraft parts according to claim 1, characterized in that: The clamping box (1) is fixedly connected to the mounting plate (3), and the mounting plate (3) is fixedly connected to the electric push rod (4).

7. The positioning and clamping fixture for machining aircraft parts according to claim 6, characterized in that: The electric push rod (4) is fixedly connected to the support block (17), and the support block (17) is concentrically arranged with the hollow circular shaft (9).

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