Adsorption type clamping flexible tool platform for aircraft skin edge milling machining

Abstract

The utility model discloses an adsorption type clamping flexible tooling platform for aircraft skin edge milling processing, which comprises a base, a plurality of flexible positioning upright posts and a plurality of flexible sucking disc upright posts, the base comprises a support frame and a translation device, the translation device is fixed on the support frame, and the flexible positioning upright posts and the flexible sucking disc upright posts are fixed on the support frame. The flexible positioning stand column and the flexible suction cup stand column are installed on the translation device, the flexible positioning stand column comprises a first telescopic stand column and a positioning pin module, the positioning pin module is fixed to the upper end of the first telescopic stand column, the flexible suction cup stand column comprises a second telescopic stand column and a self-adaptive suction cup module, and the second telescopic stand column is fixed to the upper end of the second telescopic stand column. The self-adaptive suction cup module is fixed to the upper end of the second telescopic stand column. The adsorption type clamping flexible tool platform for aircraft skin edge milling machining is convenient to operate and can adapt to clamping of aircraft skin workpieces of different sizes and different types, and the machining flexibility and precision are improved.

Description

Technical Field

[0001] The utility model relates to the field of aircraft manufacturing, and particularly provides an adsorption clamping flexible tooling platform for milling the edges of aircraft skins. Background Technique

[0002] The aircraft skin is the main component that constitutes the fuselage and wing shapes. Its thickness is generally 2-3 mm, belonging to typical thin-walled parts. The main processing forms include skin forming, edge milling, and drilling, etc. Since the traditional process uses a pallet-type rigid fixture when processing aircraft skins, such tooling can only meet the clamping of specific skins. With the rapid development of the aviation industry, most aircraft are manufactured in small and medium batches. The sizes of aircraft skins are different, and the required fixtures are also different. According to statistics, the development of special fixtures accounts for 30%-50% of the entire aircraft R & D cycle.

[0003] Therefore, how to improve the existing tooling system to adapt to the clamping of aircraft skin workpieces of different sizes and different types, improve aircraft production efficiency, and save production resources has become an urgent problem to be solved. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide an adsorption clamping flexible tooling platform for milling the edges of aircraft skins, so as to solve the problems that the existing tooling system cannot adapt to the clamping of aircraft skin workpieces of different sizes and different types, has low production efficiency, and wastes production resources.

[0005] The technical solution provided by the utility model is: an adsorption clamping flexible tooling platform for milling the edges of aircraft skins, which is characterized in that it includes a base, a plurality of flexible positioning columns and a plurality of flexible suction cup columns. Among them, the base includes a support frame and a translation device. The translation device is fixed on the support frame. The flexible positioning columns and the flexible suction cup columns are installed on the translation device. The flexible positioning column includes a first telescopic column and a positioning pin module. The positioning pin module is fixed at the upper end of the first telescopic column. The flexible suction cup column includes a second telescopic column and an adaptive suction cup module. The adaptive suction cup module is fixed at the upper end of the second telescopic column. This adsorption clamping flexible tooling platform for milling the edges of aircraft skins is convenient to operate, can adapt to the clamping of aircraft skin workpieces of different sizes and different types, and improves the flexibility and accuracy of processing.

[0006] Preferably, a visual baffle is embedded on the side of the support frame.

[0007] Further preferably, the translation device includes a Y guide rail, an X guide rail, Y-direction sliders, and X-direction sliders. There are two Y guide rails which are fixedly spaced on the bottom surface of the support frame. A number of the Y-direction sliders are correspondingly and spacedly distributed on each Y guide rail. There are multiple X guide rails, and both ends of each X guide rail are correspondingly fixed on the corresponding Y-direction sliders on the Y guide rails. A number of the X-direction sliders are spacedly distributed on the X guide rails. A carrier is installed on the X-direction sliders, and the carrier is used to fix the flexible positioning column and the flexible suction cup column.

[0008] Further preferably, there are two flexible positioning columns which are diagonally arranged on the translation device, and the flexible suction cup columns are all arranged in the rectangular space formed by the flexible positioning columns as diagonals.

[0009] Further preferably, the positioning pin module includes a stator, a rotor, an arc-shaped slider, a support frame, and a positioning pin. The stator is fixed on the first telescopic column. The rotor is rotatably arranged above the stator. The support frame is fixed on the rotor and has an arc surface on it. The arc-shaped slider is installed on the arc surface of the support frame through a rotating shaft. The positioning pin is fixed above the arc-shaped slider and swings with the arc-shaped slider.

[0010] Further preferably, the first telescopic column and the second telescopic column have the same structure. The first telescopic column includes an inner column, an outer column, a ball screw, a screw nut, angular contact ball bearings, a screw guide bearing, a guide sleeve, a coupling, and a servo motor. Both the inner column and the outer column are of hollow structure. The outer column is sleeved on the outer side of the inner column with a gap. The ball screw is fixed inside the inner column and does not contact the inner wall of the inner column. The screw nut is sleeved on the ball screw and fixed at the lower end of the inner column. The angular contact ball bearings are fixedly sleeved at the lower end of the ball screw. The screw guide bearing is fixedly sleeved at the upper end of the ball screw and contacts the inner wall of the inner column. The guide sleeve is fixed on the inner wall of the upper end of the outer column and contacts the inner column. The coupling is fixed below the angular contact ball bearings and is inside the outer column. The servo motor is fixed below the coupling.

[0011] Further preferably, the adaptive suction cup module includes a suction cup support frame, a ball retaining nut, a suction cup ball, and a suction cup. The suction cup support frame is fixed on the second telescopic column. The ball retaining nut is in threaded cooperation with the suction cup support frame. The lower part of the suction cup ball is spherical and the upper part is flat. The spherical part moves in the spherical cavity formed by the ball retaining nut and the suction cup support frame. The flat part is fixed to the bottom of the suction cup, and the suction cup rotates with the suction cup ball.

[0012] The adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the utility model, the translation device can control the planar movement degree of freedom of the positioning pin module and the adaptive suction cup module, the flexible positioning columns and the flexible suction cup columns are determined according to the size of the aircraft skin, the first telescopic column and the second telescopic column can control the vertical movement degree of freedom of the positioning pin module and the adaptive suction cup module, after the positioning pin module and the adaptive suction cup module are sent to the specified height, the positioning pin module can fix the remaining degrees of freedom.

[0013] The adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the utility model can solve the problem that the existing tooling system cannot adapt to the clamping of aircraft skin workpieces of different sizes and different types, improves the flexibility and accuracy of processing, improves the production efficiency of aircraft, and saves production resources. Brief Description of the Drawings

[0014] The following further describes the present utility model in detail in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a schematic structural diagram of an adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the base in the adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the present utility model;

[0017] Figure 3 It is a schematic structural diagram of the positioning pin module in the adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the first telescopic column in the adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the present utility model;

[0019] Figure 5 It is a sectional view of the first telescopic column in the adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the present utility model;

[0020] Figure 6 It is a schematic structural diagram of the adaptive suction cup module in the adsorption clamping flexible tooling platform for aircraft skin milling edge processing provided by the present utility model. Detailed Embodiments

[0021] The following will further explain the present utility model in conjunction with specific implementation schemes, but the present utility model is not limited thereto.

[0022] Such as Figure 1As shown in the figure, the present utility model provides an adsorption clamping flexible tooling platform for aircraft skin milling edge processing, which includes a base, a plurality of flexible positioning columns 3 and a plurality of flexible suction cup columns 4. Among them, the base includes a support frame 1 and a translation device 2. The translation device 2 is fixed on the support frame 1. The flexible positioning columns 3 and the flexible suction cup columns 4 are installed on the translation device 2. The flexible positioning column 3 includes a first telescopic column 31 and a positioning pin module 32. The positioning pin module 32 is fixed at the upper end of the first telescopic column 31. The flexible suction cup column 4 includes a second telescopic column 41 and an adaptive suction cup module 42. The adaptive suction cup module 42 is fixed at the upper end of the second telescopic column 41.

[0023] The using method of the adsorption clamping flexible tooling platform for aircraft skin milling edge processing is as follows: First, determine the row and column distribution of the flexible positioning columns and the flexible suction cup columns according to the size of the aircraft skin, and send the flexible positioning columns and the flexible suction cup columns to the designated positions. Then, adjust the heights of the first telescopic column and the second telescopic column according to the shape of the aircraft skin, and send the positioning pin module and the adaptive suction cup module to the designated heights. Among them, the positioning pin module can provide a positioning reference for the curved surface thin-walled parts during the curved surface positioning and shaping.

[0024] As an improvement of the technical solution, as Figure 1 shown, the upper and lower surfaces of the support frame 1 are welded and surrounded by square steel pipes with a cross-section of 100mm * 60mm. The cross-sectional dimensions of the square steel pipes at the four corners are 100mm * 100mm. A number of square steel pipes with a cross-section of 80mm * 40mm are evenly welded on the bottom surface. A visible baffle is embedded on the side surface of the support frame 1.

[0025] As an improvement of the technical solution, as Figure 2 shown, the translation device 2 includes a Y guide rail 201, an X guide rail 202, a Y-direction slider 203 and an X-direction slider 204. There are two Y guide rails 201 which are fixedly spaced on the bottom surface of the support frame 1. A number of the Y-direction sliders 203 are correspondingly and spacedly distributed on each Y guide rail 201. There are multiple X guide rails 202, and both ends of each X guide rail 202 are correspondingly fixed on the corresponding Y-direction sliders 203 on the Y guide rails 201. A number of the X-direction sliders 204 are spacedly distributed on the X guide rails 202. A carrier is installed on the X-direction slider 204. The carrier is used to fix the flexible positioning column 3 and the flexible suction cup column 4 to control the planar movement degrees of freedom of the flexible positioning column and the flexible suction cup column.

[0026] As an improvement of the technical solution, as Figure 1As shown in the figure, there are two flexible positioning columns 3, which are diagonally arranged on the translation device 2. In the "N-2-1" positioning principle, the two positioning pin modules can fix the remaining degrees of freedom for positioning the aircraft skin. The flexible suction cup columns 4 are all arranged within the rectangular space formed diagonally by the flexible positioning columns 3. The flexible positioning columns 3 and the flexible suction cup columns 4 are arranged in rows and columns, with the row spacing not exceeding 200 mm and the column spacing not exceeding 400 mm. The row spacing between the center of the adaptive suction cup module 5 and the edge of the aircraft skin does not exceed 80 mm, and the column spacing does not exceed 50 mm.

[0027] As an improvement of the technical solution, as Figure 3 shown in the figure, the positioning pin module 32 includes a stator 321, a rotor 322, an arc-shaped slider 323, a support frame 324, and a positioning pin 325. The stator 321 is fixed on the first telescopic column 31. The rotor 322 is rotatably arranged above the stator 321. The support frame 324 is fixed on the rotor 322 and has an arc surface on it. The arc-shaped slider 323 is installed on the arc surface of the support frame 324 through a rotating shaft. The positioning pin 325 is fixed above the arc-shaped slider 323 and swings with the arc-shaped slider 323 to complete positioning by adapting to the curvature of the aircraft skin.

[0028] As an improvement of the technical solution, as Figures 4-5 shown in the figure, the first telescopic column 31 and the second telescopic column 41 have the same structure. The first telescopic column 31 includes an inner column 311, an outer column 312, a ball screw 313, a screw nut 314, angular contact ball bearings 315, a screw guide bearing 316, a guide sleeve 317, a coupling 318, and a servo motor 319. Both the inner column 311 and the outer column 312 are of hollow structure. The outer column 312 is sleeved on the outer side of the inner column 311 with a clearance. The ball screw 313 is fixed inside the inner column 311 and does not contact the inner wall of the inner column 311. The screw nut 314 is sleeved on the ball screw 313 and fixed at the lower end of the inner column 311. The angular contact ball bearings 315 are fixedly sleeved at the lower end of the ball screw 313. The screw guide bearing 316 is fixedly sleeved at the upper end of the ball screw 313 and contacts the inner wall of the inner column 311. The guide sleeve 317 is fixed on the inner wall of the upper end of the outer column 312 and contacts the inner column 311. The coupling 318 is fixed below the angular contact ball bearings 315 and is located inside the outer column 312. The servo motor 319 is fixed below the coupling 318. The height of the telescopic column is adjusted by driving the screw nut to move up and down along the ball screw through the servo motor. The telescopic column sends the adaptive suction cup module and the positioning pin module to the specified height.

[0029] As an improvement of the technical solution, asFigure 6 As shown, the adaptive suction cup module 42 includes a suction cup support frame 421, a ball retaining nut 422, a suction cup ball 423, and a suction cup 424. The suction cup support frame 421 is fixed to the second telescopic column 41. The ball retaining nut 422 is threadedly engaged with the suction cup support frame 421. The lower part of the suction cup ball 423 is spherical and the upper part is flat. The spherical part moves within the spherical cavity formed by the ball retaining nut 422 and the suction cup support frame 421, and the flat part is fixed to the bottom of the suction cup 424. The suction cup 424 rotates with the suction cup ball 423, so that the suction cup adapts to the curvature of the aircraft skin. After that, the compressor sends air into the filter through a trachea for purification. The purified gas adjusts the vacuum air pressure through a vacuum generator to form a pressure difference between the inner surface and the outer surface of the workpiece, completing the adsorption of the workpiece.

[0030] The specific embodiments of the present invention are written in a progressive manner, emphasizing the differences between each embodiment, and the similar parts can be referred to each other.

[0031] The above has described in detail the embodiments of the present invention in conjunction with the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. An adsorption-type clamping flexible tooling platform for aircraft skin edge milling, characterized in that: The invention comprises a base, a plurality of flexible positioning columns (3) and a plurality of flexible suction cup columns (4), wherein the base comprises a supporting frame (1) and a translation device (2), the translation device (2) being fixed on the supporting frame (1), the flexible positioning columns (3) and the flexible suction cup columns (4) being installed on the translation device (2), the flexible positioning columns (3) comprising a first telescopic column (31) and a positioning pin module (32), the positioning pin module (32) being fixed on the upper end of the first telescopic column (31), the flexible suction cup columns (4) comprising a second telescopic column (41) and an adaptive suction cup module (42), the adaptive suction cup module (42) being fixed on the upper end of the second telescopic column (41).

2. The adsorption-type clamping flexible tooling platform for aircraft skin edge milling according to claim 1 is characterized in that: A visible baffle is embedded on the side of the support frame (1).

3. The adsorption-type clamping flexible tooling platform for aircraft skin edge milling according to claim 1 is characterized in that: The translation device (2) comprises a Y guide rail (201), an X guide rail (202), a Y-direction slider (203) and an X-direction slider (204); the Y guide rails (201) are two and are fixed at intervals on the bottom surface of the support frame (1); each of the Y guide rails (201) is provided with a plurality of Y-direction sliders (203) correspondingly and at intervals; the X guide rails (202) are multiple and both ends of each X guide rail (202) are correspondingly fixed to the Y-direction sliders (203) corresponding to the Y guide rails (201); the X guide rails (202) are provided with a plurality of X-direction sliders (204) at intervals; a support bracket is mounted on the X-direction slider (204); the support bracket is used to fix the flexible positioning column (3) and the flexible suction cup column (4).

4. The adsorption-type clamping flexible tooling platform for aircraft skin edge milling according to claim 1 is characterized in that: There are two flexible positioning columns (3) which are diagonally arranged on the translation device (2), and the flexible suction cup columns (4) are all arranged in a rectangular space formed by the diagonally arranged flexible positioning columns (3).

5. The adsorption-type clamping flexible tooling platform for aircraft skin edge milling according to claim 1 is characterized in that: The positioning pin module (32) comprises a stator (321), a rotor (322), an arc-shaped slider (323), a support frame (324) and a positioning pin (325); the stator (321) is fixed on the first telescopic column (31); the rotor (322) is rotatably arranged above the stator (321); the support frame (324) is fixed on the rotor (322) and has an arc surface thereon; the arc-shaped slider (323) is mounted on the arc surface of the support frame (324) by means of a rotating shaft; and the positioning pin (325) is fixed above the arc-shaped slider (323) and swings with the arc-shaped slider (323).

6. The adsorption-type clamping flexible tooling platform for aircraft skin edge milling according to claim 1 is characterized in that: The first telescopic column (31) and the second telescopic column (41) have the same structure. The first telescopic column (31) comprises an inner column (311), an outer column (312), a ball screw (313), a screw nut (314), an angular contact ball bearing (315), a screw guide bearing (316), a guide sleeve (317), a coupling (318) and a servo motor (319). The inner column (311) and the outer column (312) are both hollow structures. The outer column (312) is loosely sleeved outside the inner column (311). The ball screw (313) is fixed inside the inner column (311) and does not contact the inner wall of the inner column (311). The nut (314) is sleeved on the outside of the ball screw (313) and fixed to the lower end of the inner column (311); the angular contact ball bearing (315) is fixedly sleeved on the lower end of the ball screw (313); the screw guide bearing (316) is fixedly sleeved on the upper end of the ball screw (313) and contacts the inner wall of the inner column (311); the guide sleeve (317) is fixed on the inner wall of the upper end of the outer column (312) and contacts the inner column (311); the coupling (318) is fixed below the angular contact ball bearing (315) and is located in the outer column (312); and the servo motor (319) is fixed below the coupling (318).

7. The adsorption-type clamping flexible tooling platform for aircraft skin edge milling according to claim 1 is characterized in that: The adaptive suction cup module (42) comprises a suction cup support frame (421), a ball retaining nut (422), a suction cup rolling ball (423) and a suction cup (424); the suction cup support frame (421) is fixed on the second telescopic column (41); the ball retaining nut (422) is threadedly engaged on the suction cup support frame (421); the suction cup rolling ball (423) has a spherical surface at the bottom and a flat surface at the top; the spherical surface part moves in a spherical cavity formed by the ball retaining nut (422) and the suction cup support frame (421); the flat surface part is fixed to the bottom of the suction cup (424); and the suction cup (424) rotates with the suction cup rolling ball (423).

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