A special fixture for machining aircraft seat slide rails

Abstract

The present invention discloses a special fixture for processing aircraft seat slide rails, comprising a base, a plurality of clamping units are arranged on one side of the base in parallel and at equal intervals; the clamping units are slidably connected to the base through a sliding mechanism; the base comprises a workbench, a positioning platform is arranged on the upper surface of the workbench; the clamping unit comprises a column, a cylinder assembly is connected to the top of the column, a clamp assembly is connected to the lower end of the cylinder assembly, and the clamp assembly moves up and down in a direction perpendicular to the positioning platform under the drive of the cylinder assembly; the sliding mechanism comprises a slide rail and a sliding sleeve nested with the slide rail; the slide rail is fixedly connected to the base, and the sliding sleeve is arranged close to the lower end of the column. The present invention adopts a telescopic cylinder as the power source of the clamping unit, which is not only simple to clamp, but also has a stable clamping force and is easy to operate, and solves the characteristics of easy deformation of profiles and difficult correction of clamping. By using a pad and a positioning platform that are compatible with the profile shape of the part to be processed, the part to be processed can be firmly fixed.

Description

Technical Field

[0001] The invention belongs to the field of fixtures, and in particular relates to a special fixture for machining aircraft seat slide rails. Background Art

[0002] When the workpiece is processed on the machine tool, it is often necessary to position the workpiece with a fixture. The seats on civil airliners are securely connected to the main structure of the aircraft through seat slides. The main function of the seat slides is to quickly install and adjust the aircraft seats. Setting the seat slides on the bottom plate not only protects the floor, but also the mounting holes on the slides provide different installation positions for the seats, making it convenient for disassembly and movement. Since it is required that when installing and debugging the seats on the slides, there should be no sliding problems, the processed seat slides should not be twisted or deformed. However, since the slides are mostly made of aluminum profiles with narrow width and large length, the inherent characteristics of the profiles themselves make the correction process more difficult.

[0003] At the same time, when processing aircraft seat slides or other structural types of profiles, because special pads need to be prepared to support the space, different numbers of clamps such as pressure plates, pads, screws, etc. need to be used during the clamping process, which is time-consuming, labor-intensive, and has low work efficiency, resulting in very low production efficiency of the seat slides. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a special fixture for processing aircraft seat slide rails, so as to solve the defects of the prior art that the profile is easy to deform and the clamping is difficult to correct during the processing of aircraft seat slide rails.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0006] A special fixture for processing aircraft seat slide rails, comprising a base, one side of which is provided with a plurality of clamping units which are parallel to each other and arranged at equal intervals; the clamping units are slidably connected to the base via a sliding mechanism;

[0007] The base comprises a workbench, and a positioning platform is arranged on the upper surface of the workbench;

[0008] The clamping unit comprises a column, the top end of which is connected to a cylinder assembly, the lower end of which is connected to a clamp assembly, and the clamp assembly moves up and down in a direction perpendicular to the positioning platform under the drive of the cylinder assembly;

[0009] The sliding mechanism comprises a sliding rail and a sliding sleeve nested with the sliding rail; the sliding rail is fixedly connected to the base, and the sliding sleeve is arranged close to the lower end of the column.

[0010] The present invention also has the following technical features:

[0011] Specifically, the workbench includes an upper base plate, a lower base plate and a plurality of connecting plates; the lower base plate is located below the upper base plate and parallel to the upper base plate; the connecting plates are arranged between the upper base plate and the lower base plate and are perpendicular to the upper base plate and the lower base plate.

[0012] Furthermore, the cylinder assembly includes a telescopic cylinder and a hand valve, and the hand valve is connected to the telescopic cylinder through an air pipe to adjust the airflow size of the telescopic cylinder.

[0013] Furthermore, the fixture assembly includes a guide column, which is inserted into a guide hole provided on the telescopic cylinder and is connected to a lower pressure plate below the guide column. A pad is provided below the lower pressure plate for abutting against the aircraft seat slide rail, and the surface shape of the pad is adapted to the surface shape of the part to be processed.

[0014] Furthermore, the cushion block includes a first expansion block, a second expansion block and a third expansion block which are arranged in connection with each other.

[0015] Furthermore, the slide rail is provided with a plurality of limiting holes for limiting positioning.

[0016] Furthermore, a support rod is provided between the column and the positioning platform.

[0017] Furthermore, the positioning platform includes an L-shaped lower support platform and an L-shaped upper support platform, and the bottom surface of the transverse plate of the L-shaped upper support platform abuts against the top surface of the transverse plate of the L-shaped lower support platform.

[0018] Furthermore, there are multiple connecting plates which are arranged parallel to each other.

[0019] Furthermore, the spacing between the clamping units 2 is 50.0 mm to 150.0 mm.

[0020] Compared with the prior art, the present invention has the following technical effects:

[0021] (I) The present invention adopts a telescopic cylinder as the power source of the clamping unit, which is not only simple to clamp and has a stable clamping force, but also easy to operate. It solves the problems of easy deformation of profiles and difficult correction during clamping. By using a pad and a positioning table that are compatible with the profile shape of the part to be processed, the part to be processed can be firmly fixed.

[0022] (II) The present invention can adjust the number of clamping units according to actual needs, effectively shortening the clamping time of the aircraft seat slide rails, improving production efficiency, thereby effectively reducing processing costs and ensuring processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side view of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of some components of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the clamp assembly of the present invention.

[0027] The symbols in the figure represent: 1-base, 2-clamping unit, 3-sliding mechanism, 4-support rod; 11-workbench, 12-positioning table; 21-column, 22-cylinder assembly, 23-clamp assembly; 31-slide rail, 32-sleeve; 111-upper base plate, 112-lower base plate, 113-connecting plate; 121-L-type lower support platform, 122-L-type upper support platform; 1211-first transverse plate, 1221-second transverse plate; 221-telescopic cylinder, 222-hand valve, 223-trachea, 224-guide hole; 231-guide column, 232-lower pressure plate, 233-pad; 2331-first expansion block, 2332-second expansion block, 2333-third expansion block; 311-limiting hole.

[0028] The specific contents of the present invention are further explained in detail below in conjunction with embodiments. DETAILED DESCRIPTION

[0029] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art.

[0030] The terms "upper", "lower", "front", "rear", etc. used in the present invention to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. "Inside" and "outside" refer to the inside and outside of the contour of the corresponding component, and the above terms cannot be understood as limitations on the present invention.

[0031] In the present invention, unless otherwise specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or 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, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] Following the above technical solution, Figures 1 to 3 As shown, this embodiment provides a

[0034] A special fixture for processing aircraft seat slide rails, comprising a base 1, a plurality of clamping units 2 are arranged on one side of the base 1 in parallel and at equal intervals; the clamping units 2 are slidably connected to the base 1 through a sliding mechanism 3;

[0035] The base 1 includes a workbench 11, and a positioning platform 12 is arranged on the upper surface of the workbench 11;

[0036] The clamping unit 2 includes a column 21, the top end of the column 21 is connected to a cylinder assembly 22, the lower end of the cylinder assembly 22 is connected to a clamp assembly 23, and the clamp assembly 23 moves up and down along the direction of the vertical positioning platform 12 under the drive of the cylinder assembly 22;

[0037] The sliding mechanism 3 includes a sliding rail 31 and a sliding sleeve 32 embedded in the sliding rail 31 ; the sliding rail 31 is fixedly connected to the base 1 , and the sliding sleeve 32 is arranged close to the lower end of the column 21 .

[0038] The positioning platform 12 is used to place the aircraft seat slide rail to be processed, and the clamping unit 2 cooperates with the positioning platform 12 to fix the aircraft seat slide rail to be processed. The sliding mechanism 3 is used to adjust the position of the clamping unit 2.

[0039] As a preferred solution of this embodiment, the workbench 11 includes an upper base plate 111, a lower base plate 112 and a plurality of connecting plates 113; the lower base plate 112 is located below the upper base plate 111 and parallel to the upper base plate 112; the connecting plates 113 are arranged between the upper base plate 111 and the lower base plate 112 and are perpendicular to the upper base plate 111 and the lower base plate 112.

[0040] As a preferred solution of this embodiment, the cylinder assembly 22 includes a telescopic cylinder 221 and a hand valve 222. The hand valve 222 is connected to the telescopic cylinder 221 through an air pipe 223 and is used to adjust the airflow size of the telescopic cylinder 221. The telescopic cylinder 221 is used to provide kinetic energy for the clamping unit 2 to move up and down along the direction of the vertical positioning platform 12. The air pipe 223 is used to provide an air source for the telescopic cylinder 221. The hand valve 222 blocks or exposes different air holes by controlling the movement of the valve body. The piston of the telescopic cylinder 221 is pushed by air pressure to drive the piston rod and finally drive the clamping unit 2 to move. The hand valve 222 can also be used to adjust the direction of the airflow in and out of the telescopic cylinder 221 to achieve the telescopic cylinder 221.

[0041] As a preferred solution of this embodiment, the fixture assembly 23 includes a guide column 231, which is inserted into the guide hole 224 provided on the telescopic cylinder and is connected to a lower pressing plate 232 below the guide column 231. A pad 233 for contacting with the aircraft seat rail is provided below the lower pressing plate 232, and the profile of the pad 233 is adapted to the profile of the part to be processed. In this embodiment, two guide columns 231 are provided at opposite positions on both sides of the piston rod of the telescopic cylinder 221, and the axis 231 of the guide column is provided in the same plane as the axis of the piston rod. The guide column 231 is used to connect the telescopic cylinder and the lower pressing plate 232, so as to ensure that the lower pressing plate 232 moves vertically up and down under the drive of the telescopic cylinder 221, and prevent the positional relationship between the lower pressing plate 232 and the positioning platform 12 from deviating.

[0042] A cushion block 233 for contacting with the aircraft seat rail is provided below the lower pressing plate 232 , and the profile shape of the cushion block 233 is adapted to the profile shape of the part to be processed.

[0043] As a preferred solution of this embodiment, the pad 233 includes a first expansion block 2331, a second expansion block 2332 and a third expansion block 2333 which are arranged in connection with each other, and the surfaces of the first expansion block 2331, the second expansion block 2332 and the third expansion block 2333 in contact with the part to be processed are adapted to the profile shape of the part to be processed.

[0044] As a preferred solution of this embodiment, a plurality of limiting holes 311 for limiting are provided on the slide rail 31. The moving position of the slide sleeve 32 can be limited by inserting the limiting pin into the limiting hole 311, thereby limiting the position of the column 21, and finally limiting the position of the clamping unit 2. In other embodiments, a threaded hole is provided on the slide sleeve 32 at a position opposite to the limiting hole, and the position of the column 21 is limited by a bolt passing through the threaded hole and the limiting hole 311, and finally limiting the position of the clamping unit 2.

[0045] A support rod 4 is provided between the column 21 and the positioning platform 12 , and the support rod 4 is used for reinforcement.

[0046] The positioning platform 12 includes an L-shaped lower support platform 121 and an L-shaped upper support platform 122 . The bottom surface of the transverse plate 1211 of the L-shaped upper support platform 121 abuts against the top surface of the transverse plate 1221 of the L-shaped lower support platform 122 .

[0047] There are multiple connecting plates 113 which are arranged parallel to each other.

[0048] The spacing between the clamping units 2 is 50.0 mm to 150.0 mm.

[0049] The use process of the present invention is as follows:

[0050] The positions of the multiple clamping units 2 are adjusted on the slide rail 31 by moving the sliding sleeve 32, and then the position is limited by setting a limit pin in the limit hole 311 to ensure that the clamping unit 2 is set above the positioning table 12. When the parts to be processed are to be clamped, the hand valve 222 is adjusted to control the direction of the air flow in the telescopic cylinder so that the telescopic cylinder 221 moves upward, and the height of the entire clamp assembly 23 is increased. Then the parts to be processed are placed on the positioning table 12, and then the hand valve 222 is adjusted to control the direction of the air flow in the telescopic cylinder so that the telescopic cylinder 221 moves downward, and the height of the entire clamp assembly 23 is reduced, so that the clamp assembly 23 and the positioning table 12 clamp the parts to be processed to complete the processing process.

[0051] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0052] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A special fixture for machining aircraft seat slide rails, comprising a base (1), It is characterized in that A plurality of clamping units (2) are arranged parallel to each other and at equal intervals on one side of the base (1); the clamping units (2) are slidably connected to the base (1) via a sliding mechanism (3); The base (1) comprises a workbench (11), and a positioning platform (12) is provided on the upper surface of the workbench (11); The clamping unit (2) comprises a column (21), the top end of the column (21) is connected to a cylinder assembly (22), the lower end of the cylinder assembly (22) is connected to a clamp assembly (23), and the clamp assembly (23) moves up and down in a direction vertical to the positioning platform (12) under the drive of the cylinder assembly (22); The sliding mechanism (3) comprises a sliding rail (31) and a sliding sleeve (32) nested with the sliding rail (31); the sliding rail (31) is fixedly connected to the base (1), and the sliding sleeve (32) is arranged in close contact with the lower end of the column (21); The workbench (11) comprises an upper bottom plate (111), a lower bottom plate (112), and a plurality of connecting plates (113); the lower bottom plate (112) is located below the upper bottom plate (111) and is parallel to the upper bottom plate (112); the connecting plates (113) are arranged between the upper bottom plate (111) and the lower bottom plate (112) and are perpendicular to the upper bottom plate (111) and the lower bottom plate (112); The cylinder assembly (22) comprises a telescopic cylinder (221) and a hand valve (222); the hand valve (222) is connected to the telescopic cylinder (221) via an air pipe (223) and is used to adjust the airflow of the telescopic cylinder (221); The clamp assembly (23) comprises a guide column (231), the guide column (231) is inserted into a guide hole (224) provided on the telescopic cylinder, and a lower pressing plate (232) is connected below the guide column (231), a cushion block (233) for contacting with an aircraft seat slide rail is provided below the lower pressing plate (232), and a profile shape of the cushion block (233) is adapted to a profile shape of a part to be processed; The cushion block (233) comprises a first expansion block (2331), a second expansion block (2332) and a third expansion block (2333) which are arranged in connection with each other; The positioning platform (12) comprises an L-shaped lower support platform (121) and an L-shaped upper support platform (122), wherein the bottom surface of the first transverse plate (1211) of the L-shaped upper support platform (121) abuts against the top surface of the second transverse plate (1221) of the L-shaped lower support platform (122); There are a plurality of connecting plates (113) which are arranged parallel to each other.

2. The special fixture for machining aircraft seat slide rails as claimed in claim 1, It is characterized in that The slide rail (31) is provided with a plurality of limiting holes (311) for limiting position.

3. The special fixture for machining aircraft seat slide rails as claimed in claim 1, It is characterized in that A support rod (4) is provided between the upright column (21) and the positioning platform (12).

4. The special fixture for machining aircraft seat slide rails as claimed in claim 1, It is characterized in that The spacing between the clamping units (2) is 50.0 mm to 150.0 mm.

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