A multi-sided machining fixture capable of clamping multiple aircraft seat parts

Abstract

The utility model relates to processing fixture technical field, concretely relates to a kind of multi-surface machining fixture of multiple aircraft seat parts can be clamped, including bearing platform, rotary drive component and at least one group workpiece fixed unit, it is characterized in that, rotary drive component includes the power output end and driven support end of opposite arrangement, bearing platform is connected between power output end and driven support end, power output end can drive bearing platform rotate around axis line;Every group workpiece fixed unit is spaced distribution along the length direction of bearing platform, and workpiece fixed unit includes first clamping assembly, second clamping assembly and control connecting mechanism;First clamping assembly can be to workpiece inner support clamping, and second clamping assembly can be to workpiece outer contour clamping, and control connecting mechanism is connected control system, and control connecting mechanism is realized to the positioning and release of workpiece by the extension of first clamping assembly and second clamping assembly.

Description

Technical Field

[0001] This utility model relates to the field of machining fixture technology, specifically to a multi-faceted machining fixture capable of clamping multiple aircraft seat parts. Background Technology

[0002] In the field of machining, multi-faceted machining of multiple parts has always been a key requirement for improving production efficiency. As a critical component in the aerospace manufacturing industry, aircraft seat parts are characterized by complex structures, special materials, and stringent precision requirements. Their multi-faceted machining faces three major challenges: First, traditional fixtures are difficult to adapt to the clamping requirements of different types of seat parts, resulting in long changeover times; second, thin-walled structures are prone to deformation due to uneven clamping forces, affecting assembly accuracy; and third, the accumulation of positioning errors caused by multi-process clamping makes it difficult to meet aerospace-grade quality standards.

[0003] Traditional fixtures used for machining multiple parts mostly employ manual clamping, which is not only cumbersome and time-consuming, but also difficult to control precisely, leading to unstable clamping and compromising machining accuracy. Furthermore, traditional fixtures typically only allow machining of a single angle or a few faces. To perform multi-face machining, multiple clamping operations are often required, increasing clamping errors, reducing machining accuracy, and severely impacting machining efficiency.

[0004] A four-axis machining fixture for left and right side beams is disclosed in Chinese Patent Publication No. CN222944982U. Through the coordinated action of multiple components, it achieves positioning, clamping, and multi-face machining of the left and right side beam workpieces. In the positioning stage, a positioning block assembly and a positioning cylinder assembly work together to achieve precise positioning from three dimensions: the side, bottom, and end faces of the workpiece. A first clamping cylinder assembly and a second clamping cylinder assembly work together to apply clamping force from the top and side surfaces of the workpiece, fixing it in the positioning position. The fixture then rotates the workpiece to achieve multi-face machining. However, this device typically only processes one set of workpieces, resulting in low processing efficiency and limited adaptability, especially failing to meet the flexible production needs of small batches and diverse varieties of aircraft seat parts. Utility Model Content

[0005] To address the aforementioned issues, a multi-faceted machining fixture capable of holding multiple aircraft seat parts is provided. By installing multiple sets of workpiece fixing units, it is possible to perform multi-faceted machining on multiple sets of workpieces and various types of workpieces, thus solving the problems of traditional devices that only process one set of workpieces, resulting in low processing efficiency and low device adaptability.

[0006] To address the problems of existing technologies, this utility model provides a multi-faceted machining fixture capable of clamping multiple aircraft seat parts, including a support platform, a rotary drive assembly, and at least one set of workpiece fixing units. The rotary drive assembly includes a power output end and a driven support end arranged opposite each other, with the support platform connected between the power output end and the driven support end. The power output end can drive the support platform to rotate around its axis. Each set of workpiece fixing units is spaced apart along the length of the support platform. Each workpiece fixing unit includes a first clamping assembly, a second clamping assembly, and a control connection mechanism. The first clamping assembly can clamp the inner support of the workpiece, and the second clamping assembly can clamp the outer contour of the workpiece. The control connection mechanism is connected to a control system, and the control connection mechanism achieves the positioning and release of the workpiece by controlling the extension and retraction of the first and second clamping assemblies.

[0007] According to one embodiment of the present invention, the first clamping assembly includes a first hydraulic cylinder, a telescopic rod, and a support rod. The output end of the first hydraulic cylinder is connected to the telescopic rod, and the end of the telescopic rod is provided with an expanded end. The support rod is sleeved around the telescopic rod, and support blocks are spaced apart at the upper end of the support rod. The workpiece is sleeved on the support rod. When the telescopic rod moves down to the point where the expanded end contacts the inner wall of the support block, the outer wall of the support block is pressed against the inner wall of the workpiece.

[0008] According to one embodiment of the present invention, the radial dimension of the enlarged end gradually increases in the direction away from the telescopic rod.

[0009] According to one embodiment of the present invention, the second clamping assembly includes a second hydraulic cylinder, a floating assembly, a fixed block, and a pushing block. The output end of the second hydraulic cylinder is connected to the floating assembly. The workpiece is placed on the top surface of the fixed block and one side of the workpiece abuts against the fixed block. The pushing block is placed between the floating assembly and the fixed block and is always in contact with the floating assembly. The floating assembly moves downward and can drive the pushing block to approach and contact the side of the workpiece away from the fixed block.

[0010] According to one embodiment of the present invention, the floating assembly includes a floating rod and a trapezoidal component. The floating rod is vertically connected to the output end of a second hydraulic cylinder, and the trapezoidal component is detachably connected to the floating rod. One side of the trapezoidal component is configured as a ramp surface, and the ramp surface contacts the push block.

[0011] According to one embodiment of the present invention, an anti-slip structure is provided on the side of the pushing block near the workpiece.

[0012] According to one embodiment of the present invention, the first clamping assembly further includes a limiting post, and one end of the workpiece can be fitted onto the limiting post.

[0013] According to one embodiment of the present invention, the workpiece fixing unit is detachably connected to the bearing platform.

[0014] The advantages of this utility model compared to the prior art are:

[0015] 1. The first clamping component, the "inner support," is suitable for workpieces with internal holes / cavities, while the second clamping component, the "outer clamp," is suitable for various external contour workpieces. The combination of these two components allows the fixture to be compatible with a variety of workpieces featuring both "inner support" and "outer clamp" structures. A rotary drive component rotates the support platform, enabling the workpiece to be machined from multiple sides without requiring multiple clamping operations. The control connection mechanism is linked to an external control system, automatically controlling the extension and retraction of the clamping components through a program, replacing manual operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a multi-faceted machining fixture capable of holding multiple aircraft seat parts according to this utility model. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of a multi-faceted machining fixture capable of holding multiple aircraft seat parts according to this utility model. Figure 2 .

[0018] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0019] Figure 4 This is a cross-sectional view of a multi-faceted machining fixture capable of holding multiple aircraft seat parts, according to this utility model. Figure 1 .

[0020] Figure 5 yes Figure 4 A magnified view of a portion of the image.

[0021] Figure 6 This is a cross-sectional view of a multi-faceted machining fixture capable of holding multiple aircraft seat parts, according to this utility model. Figure 2 .

[0022] Figure 7 yes Figure 6 A magnified view of a portion of the image.

[0023] The following are the labels in the diagram: 1. Bearing platform; 2. Rotary drive assembly; 20. Power output end; 21. Driven support end; 3. Workpiece fixing unit; 30. First clamping assembly; 300. First hydraulic cylinder; 301. Telescopic rod; 3010. Expanding end; 302. Support rod; 303. Limiting post; 31. Second clamping assembly; 310. Second hydraulic cylinder; 311. Floating assembly; 3110. Floating rod; 3111. Trapezoidal component; 312. Fixing block; 313. Pushing block. Detailed Implementation

[0024] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figures 1-7 As shown, this utility model provides a multi-faceted machining fixture capable of clamping multiple aircraft seat parts, including a support platform 1, a rotary drive assembly 2, and at least one set of workpiece fixing units 3. The rotary drive assembly 2 includes a power output end 20 and a driven support end 21 arranged opposite to each other. The support platform 1 is connected between the power output end 20 and the driven support end 21, and the power output end 20 can drive the support platform 1 to rotate around its axis. Each set of workpiece fixing units 3 is spaced apart along the length of the support platform 1. Each workpiece fixing unit 3 includes a first clamping assembly 30, a second clamping assembly 31, and a control connection mechanism. The first clamping assembly 30 can clamp the inner support of the workpiece, and the second clamping assembly 31 can clamp the outer contour of the workpiece. The control connection mechanism is connected to a control system, and the control connection mechanism achieves the positioning and release of the workpiece by controlling the extension and retraction of the first clamping assembly 30 and the second clamping assembly 31.

[0026] Each set of workpiece fixing units 3 is spaced apart along the length of the support platform 1. Multiple sets can be arranged simultaneously to clamp multiple workpieces, improving processing efficiency. The first clamping assembly 30 (internal support clamping) provides support and clamping from the inside of the workpiece (such as an inner hole or cavity). It fits the inner wall by expanding inwards to apply a stable internal support force, preventing internal deformation or positional displacement of the workpiece. The second clamping assembly 31 (external contour clamping) applies clamping force from the external contour of the workpiece (such as a cylindrical surface or a plane), forming an "internal and external clamping" effect with the first clamping assembly 30, fixing the workpiece from different directions. The first clamping assembly 30 "internal support" is suitable for workpieces with inner holes / cavities, and the second clamping assembly 31 "external clamping" is suitable for various external contour workpieces. The combination of the two allows the fixture to be compatible with various workpieces with "internal support + external clamping" structural features. The workpiece fixing units 3 are "spaced apart along the length of the support platform 1" and support "at least one set" arrangement, allowing multiple sets of units to be installed simultaneously to clamp multiple workpieces. Compared to the traditional fixture model of "processing a small number of workpieces at a time," this system can complete the processing of more parts within the same processing cycle, making it particularly suitable for batch production scenarios and significantly improving production efficiency. The rotary drive assembly 2 rotates the support platform 1, allowing the workpiece to be processed from multiple sides without requiring multiple clamping operations. The control connection mechanism is linked to an external control system, automatically controlling the extension and retraction of the clamping assembly through a program, replacing manual operation. This reduces labor intensity, ensures consistency and accuracy in each clamping action, reduces human error, and facilitates integration into automated production lines.

[0027] The first clamping assembly 30 includes a first hydraulic cylinder 300, a telescopic rod 301, and a support rod 302. The output end of the first hydraulic cylinder 300 is connected to the telescopic rod 301. The end of the telescopic rod 301 is provided with an expanded end 3010. The support rod 302 is sleeved around the telescopic rod 301. Support blocks are provided at intervals on the upper end of the support rod 302. The workpiece is sleeved on the support rod 302. When the telescopic rod 301 moves down to the point where the expanded end 3010 contacts the inner wall of the support block, the outer wall of the support block is pressed against the inner wall of the workpiece.

[0028] When clamping, the first hydraulic cylinder 300 drives the telescopic rod 301 to move downward, and the expanded end 3010 moves downward accordingly. As its radial dimension gradually expands, it will squeeze the inner wall of the support block, forcing the support block to expand radially outward. When the expanded end 3010 is in full contact with the inner wall of the support block, the outer wall of the support block is tightly attached to the inner wall of the workpiece, thus achieving support and clamping of the workpiece from the inside.

[0029] When released, the first hydraulic cylinder 300 drives the telescopic rod 301 to move upward, the squeezing effect of the expanded end 3010 on the support block weakens / disappears, and the support block returns to its original position by means of its own elasticity or the reset structure, releasing the clamping of the workpiece. Figure 5 As shown, the radial dimension of the enlarged end 3010 gradually increases in the direction away from the telescopic rod 301.

[0030] The second clamping assembly 31 includes a second hydraulic cylinder 310, a floating assembly 311, a fixed block 312, and a pushing block 313. The output end of the second hydraulic cylinder 310 is connected to the floating assembly 311. The workpiece is placed on the top surface of the fixed block 312 and one side of the workpiece abuts against the fixed block 312. The pushing block 313 is placed between the floating assembly 311 and the fixed block 312 and is always in contact with the floating assembly 311. When the floating assembly 311 moves down, it can drive the pushing block 313 to approach and contact the side of the workpiece away from the fixed block 312.

[0031] Initial state: The workpiece is placed on the top surface of the fixing block 312, with one side naturally abutting against the side of the fixing block 312, completing the initial lateral positioning; the pushing block 313 is in a position away from the workpiece and no clamping force is applied.

[0032] Clamping process: The second hydraulic cylinder 310 drives the floating component 311 to move downward. Since the pushing block 313 is always in contact with the floating component 311 (such as adhering to its slope surface), when the floating component 311 moves downward, the slope surface squeezes the pushing block 313, forcing the pushing block 313 to move horizontally towards the side of the fixed block 312. When the pushing block 313 contacts the side of the workpiece away from the fixed block 312 and continues to apply force, the workpiece is tightly clamped between the fixed block 312 and the pushing block 313, completing the lateral clamping.

[0033] Release process: The second hydraulic cylinder 310 drives the floating component 311 to move upward, the squeezing effect of the floating component 311 on the push block 313 weakens / disappears, and the push block 313 returns to its initial position under its own gravity or the action of the reset structure (such as a spring), releasing the clamping of the workpiece.

[0034] The floating assembly 311 includes a floating rod 3110 and a trapezoidal member 3111. The floating rod 3110 is vertically connected to the output end of the second hydraulic cylinder 310. The trapezoidal member 3111 is detachably connected to the floating rod 3110. One side of the trapezoidal member 3111 is set as a ramp surface, which contacts the push block 313.

[0035] An anti-slip structure is provided on the side of the push block 313 closest to the workpiece. This prevents slippage when the push block 313 contacts the workpiece; preferably, the anti-slip structure is provided with several protrusions.

[0036] The first clamping assembly 30 also includes a limiting post 303, on which one end of the workpiece can be fitted. To prevent the workpiece from rotating during processing when the inner wall of the workpiece is a smooth circular structure, the limiting post 303 can further limit the workpiece, thereby reducing the workpiece's shaking during processing.

[0037] The workpiece fixing unit 3 is detachably connected to the support platform 1. This further increases the adaptability of the device and facilitates later maintenance.

[0038] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts, comprising a support platform (1), a rotary drive assembly (2), and at least one set of workpiece fixing units (3), characterized in that, The rotary drive assembly (2) includes a power output end (20) and a driven support end (21) arranged opposite to each other. A bearing platform (1) is connected between the power output end (20) and the driven support end (21). The power output end (20) can drive the bearing platform (1) to rotate around the axis. Each set of workpiece fixing units (3) is distributed at intervals along the length direction of the bearing platform (1). The workpiece fixing unit (3) includes a first clamping assembly (30), a second clamping assembly (31), and a control connection mechanism. The first clamping assembly (30) can clamp the inner support of the workpiece, and the second clamping assembly (31) can clamp the outer contour of the workpiece. The control connection mechanism is connected to the control system. The control connection mechanism realizes the positioning and release of the workpiece by controlling the extension and retraction of the first clamping assembly (30) and the second clamping assembly (31).

2. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 1, characterized in that, The first clamping assembly (30) includes a first hydraulic cylinder (300), a telescopic rod (301), and a support rod (302). The output end of the first hydraulic cylinder (300) is connected to the telescopic rod (301). The end of the telescopic rod (301) is provided with an enlarged end (3010). The support rod (302) is sleeved around the telescopic rod (301). Support blocks are spaced apart at the upper end of the support rod (302). The workpiece is sleeved on the support rod (302). When the telescopic rod (301) moves down to the point where the enlarged end (3010) contacts the inner wall of the support block, the outer wall of the support block is pressed against the inner wall of the workpiece.

3. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 2, characterized in that, The radial dimension of the enlarged end (3010) gradually increases in the direction away from the telescopic rod (301).

4. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 1, characterized in that, The second clamping assembly (31) includes a second hydraulic cylinder (310), a floating assembly (311), a fixed block (312), and a pushing block (313). The output end of the second hydraulic cylinder (310) is connected to the floating assembly (311). The workpiece is placed on the top surface of the fixed block (312) and one side of the workpiece abuts against the fixed block (312). The pushing block (313) is placed between the floating assembly (311) and the fixed block (312) and is always in contact with the floating assembly (311). The downward movement of the floating assembly (311) can drive the pushing block (313) to approach and contact the side of the workpiece away from the fixed block (312).

5. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 4, characterized in that, The floating assembly (311) includes a floating rod (3110) and a trapezoidal member (3111). The floating rod (3110) is vertically connected to the output end of the second hydraulic cylinder (310). The trapezoidal member (3111) is detachably connected to the floating rod (3110). One side of the trapezoidal member (3111) is set as a ramp surface, which contacts the push block (313).

6. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 5, characterized in that, The push block (313) has an anti-slip structure on the side near the workpiece.

7. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 2, characterized in that, The first clamping assembly (30) also includes a limiting post (303), one end of the workpiece can be fitted onto the limiting post (303).

8. A multi-faceted machining fixture capable of clamping multiple aircraft seat parts according to claim 1, characterized in that, The workpiece fixing unit (3) is detachably connected to the bearing platform (1).

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