CN201811729U - An aircraft skin shape accuracy detection device - Google Patents

Abstract

The utility model relates to a device for detecting airplane skin appearance precision. In the device, two clamp plate slideways (2) are respectively fixed on two sides of the upper surface of a device bracket (1) and are both parallel to reinforcing plates of the device bracket (1); the upper surface of a detection clamp plate (4) is a detection clamp plate profile (11); the coordinating plane of the detection clamp plate (4) is positioned on the horizontal plane of the inner chamber of the clamp plate slideway (2); each group of sucker fixing brackets (7) is fixed on the device bracket (1); suckers (6) are arranged in sucker mounting slots (13) of the sucker fixing bracket (7); a vacuum generator (9) is arranged below the device bracket (1) and connected with the suckers (6) by hoses; and a ruler (8) is fixed on the clamp plate slideway at one side. The device utilizes a vacuum adsorption system and the detection clamp plate to realize the supporting and positioning of parts, so as to form uniform support on the parts, and prevent the deformation of the airplane skin parts in detection; and the device has the characteristics of being simple to operate, low in cost and wide in application range.

Description

An aircraft skin shape accuracy detection device

technical field

The utility model relates to the field of detection of sheet metal parts, in particular to a detection device for the shape precision of aircraft skins. the

Background technique

With the continuous development of aviation technology at home and abroad, the update speed of various military and civil aircraft is accelerating. In order to improve the aerodynamic performance of the aircraft, high requirements are put forward for the forming quality of the skin parts. In particular, aircraft skin parts generally have the characteristics of multiple varieties, small batches or even single-piece production. Factors such as part inspection, supporting device production, and product quick response and reducing part manufacturing costs constitute a huge contradiction. the

The use of flexible testing devices for aircraft skin parts refers to the testing equipment for a variety of skin parts with different shapes and sizes using the same testing device system. Whether it is for a series of dimensions and similar shapes, or for workpieces with completely different sizes and shapes, the flexible detection device has the function of correct, reliable and fast positioning detection. Aircraft skin parts generally have two characteristics: the shape is relatively complex and irregular, so positioning, support, and holding are relatively difficult; secondly, the rigidity is relatively poor, and it is easy to deform and easily introduce additional errors. In this case, a flexible detection device is used. extremely important. The flexible detection device used in aircraft skin parts has to overcome the shortcomings of traditional devices such as long delivery time, lack of flexibility, high unit cost, high modification cost, and high storage cost. the

Traditional aircraft skin inspection is based on analog quantities such as mold lines, templates, surface samples, and positive and negative models as the manufacturing basis and coordination method. Due to the shortcomings of low precision, relatively high cost, and relatively long production cycle, it cannot fully meet the needs of modern aircraft development. Demand, and the coordination method based on digital quantity has gradually become the mainstream of modern aircraft development. In this case, the flexible rapid detection technology has been widely used in the aircraft development process, and has become an indispensable part of the modern aircraft development process. the

Contents of the invention

In order to overcome the deficiencies in the prior art, such as reduced measurement accuracy due to deformation of aircraft skin parts caused by uneven clamping force, high cost, and long production cycle, the present invention proposes an aircraft skin shape accuracy detection device. the

The invention comprises a device bracket, a clamp slide rail, a detection clamp, a suction cup, a suction cup fixing frame, a scale, a vacuum generator and an adjustment block; two clamp slide rails are respectively fixed on both sides of the upper surface of the device bracket, and the clamp The slide rails are all parallel to the reinforcing plate of the device bracket; the upper surface of the detection pallet is the profile of the detection pallet, and the shape of the profile of the detection pallet is the same as the theoretical external profile of the tested part. There are protruding mating planes on the lower surface of both ends of the detection pallet, which is located on the horizontal plane of the inner cavity of the pallet slide rail, and the two ends are fixed in the through groove of the pallet slide rail; the suction cup holders of each group are evenly distributed And fixed on the device bracket; the suction cup is installed in the suction cup installation slot of the suction cup fixing frame; the vacuum generator is located under the device bracket and connected with each suction cup through a hose; the scale is fixed on one side of the cardboard slide rail. the

There are two through device reference holes on one groove wall of the pallet slide rail, and the two device reference holes are respectively located at both ends of the pallet slide rail; there are two sections on the other groove wall of the pallet slide rail. The through groove of the pallet slide rail is located between the closing plates at both ends of the pallet slide rail and the reinforcing plate in the middle; the through groove of the pallet slide rail is located in the middle of the height of the groove wall. the

A plurality of suction cup mounting slots are evenly distributed on the vertical surface of the suction cup fixing frame; two ends of the horizontal plane of the suction cup fixing frame respectively have suction cup fixing frame connecting holes. There is a connection through groove on the reinforcing plate on the upper surface of the device bracket. Adjustment block connecting holes are arranged on the vertical panel of the adjustment block; the lower surface of the horizontal panel of the adjustment block has installation bolts vertical to the horizontal panel. the

Since aircraft skin parts are usually thin-walled shells with free-form surfaces, complex dimensions and low stiffness, they will deform under the action of their own gravity. When testing whether the shape of the skin part conforms to the theoretical shape, it is necessary to design a reasonable detection device to compensate the deformation of the part due to the tightening force and its own gravity, and obtain the shape of the part in a free state to provide a basis for manufacturing coordination. In view of the high-precision, low-cost, and short-cycle manufacturing requirements of modern aircraft skin parts in the trial production stage, it is necessary to study a digital, flexible, low-cost, and rapid production testing device. The aircraft skin flexible testing device just meets the needs of production. the

The present invention is characterized in that it adopts a vacuum adsorption system and a detection clamp to realize support and positioning of parts, simulates sandbags in traditional skin part detection, ensures uniform and controllable force, and can prevent deformation of aircraft skin parts during detection. Through the vacuuming of the vacuum tube and the sealing effect of the sealing plate and the sealing strip, the closed cavity of the vacuum generator is vacuumed, and the workpiece is sucked tightly by the vacuum suction cup by the atmospheric pressure, and the vacuum adsorption force is evenly distributed. It is suitable for aircraft with poor adsorption rigidity. Skin parts. The invention can detect the characteristic elements of different skin parts by replacing the detection card board, and can conveniently carry out three-dimensional digital detection on the aircraft skin parts through the measuring coordinate system established by the reference hole of the device. The aircraft skin flexible detection device will improve the detection efficiency of skin parts and shorten the production cycle of aircraft skin. The resulting simplification of auxiliary processes, reduction of labor intensity and reduction of warehouse area are more economical. the

Description of drawings

Accompanying drawing 1 is the structural representation of aircraft skin shape accuracy detection device;

Accompanying drawing 2 is the three-dimensional structure schematic diagram of the pallet slide rail in the aircraft skin shape accuracy detection device;

Accompanying drawing 3 is the schematic diagram of the front view of the structure of the detection clamp in the aircraft skin shape accuracy detection device;

Accompanying drawing 4 is the three-dimensional structure schematic diagram of detection card board in the aircraft skin shape accuracy detection device;

Accompanying drawing 5 is the schematic diagram of the front view of the structure of the suction cup holder in the aircraft skin shape accuracy detection device;

Accompanying drawing 6 is the schematic top view of the structure of the suction cup holder in the aircraft skin shape accuracy detection device;

Accompanying drawing 7 is the three-dimensional structural diagram of the adjustment block in the aircraft skin shape accuracy detection device. in:

1. Device bracket 2. Clamp slide rail 3. Part positioning hole 4. Detection clamp 5. Device reference hole 6. Suction cup 7. Suction cup fixing frame 8. Scale 9. Vacuum generator 10. Clamp slide rail slot 11 .Detecting card board profile 12. Screw fixing hole 13 Suction cup installation slot 14. Suction cup fixing frame connection hole 15. Adjustment block 16. Adjustment block connection hole 17. Adjustment block installation bolt

Detailed ways

Embodiment one

This embodiment is a device (accompanying drawing 1) for detecting aircraft skin parts in the range of (1200*1000) mm, and there are three detection contour lines. This embodiment includes a device support 1, a clamp slide rail 2, a detection clamp 4, a suction cup 6, a suction cup fixing frame 7, a scale 8, a vacuum generator 9, and an adjustment block 15, wherein the suction cup 6 and the vacuum generator 9 are finished parts ,, other components are as follows:

Pallet slide rail structure. There are two pallet slide rails 2, which are processed from triangular strip 45# steel. The two ends of the cardboard slide rail 2 are closed, and the middle part has a reinforcing plate, forming a slide rail groove with a triangular inner cavity. The outer surface of the groove wall of the clamp slide rail 2 is processed smoothly. Wherein there are two through device reference holes 5 on a groove wall of the card slide rail 2, and the two device reference holes 5 are located at the two ends of the card slide rail 2 respectively; on the other groove wall of the card slide rail 2 There are two sections of clamp slide rail through grooves 10, and the clamp slide rail through grooves 10 are respectively located between the closing plates at both ends of the clamp slide rail and the reinforcing plate in the middle; middle part. the

Check the structure of the card board. The detection card board 4 is a strip plate processed from aluminum alloy material. There are protruding mating planes on the lower surfaces of both ends of the detection card 4, through which the detection card 4 and the triangular inner cavity plane of the card slide rail 2 are slidably matched. The upper surface of the detection pallet 4 is a concave arc, forming a detection pallet profile 11, and the profile of the detection pallet profile 11 is the same as the theoretical external profile of the detected part; Part positioning hole 3 is arranged at the end. A threaded fixing hole 12 of the detection card is respectively arranged on both ends of the detection card 4 , and the detection card 4 is fixed in the through groove 10 of the card slide rail through the threaded fixing hole 12 . the

Suction cup holder structure. Suction cup fixed mount 7 is to process with angle steel. There are 7 suction cup installation slots 13 evenly distributed on the vertical surface of the suction cup holder 7, for installing the suction cup 6; a suction cup holder connection hole 14 is respectively arranged at both ends of the suction cup holder 7 horizontal plane, one of which is a round hole , one is a long hole; the suction cup holder connection hole 14 is used to connect the adjustment block 15. the

Adjust the block structure. Adjusting block 15 is made of angle steel, and the upper end is two mutually perpendicular connecting faces, and adjusting block connecting hole 16 is arranged on vertical panel, and vertical adjusting block mounting bolt 17 is arranged with this horizontal panel on the lower surface of horizontal panel. the

The device bracket 1 is a frame structure; there is a reinforcing plate in the middle of the upper surface of the device bracket 1, and a connecting through groove is arranged on the reinforcing plate. Two pallet slide rails 2 are respectively fixed on both sides of the upper surface of the device support 1 , and the clamp slide rails 2 are all parallel to the reinforcing plate of the device support 1 . The matching plane of the lower surface of the detection card board 4 is located on the horizontal plane of the inner chamber of the card board slide rail 2; the two ends of the detection card board 4 are fixed in the through groove 10 of the card board slide rail. The scale 8 is fixed on one side of the pallet slide rail, and the position of the detection pallet 4 on the pallet slide rail is determined by the scale 8 . The number of detection clamps 4 is determined according to the number of detection outlines of the parts to be detected. In this embodiment, there are three detection clamps 4 . the

Divide 8 suction cup holders 7 into four groups and evenly distribute them on the device bracket 1, and connect the adjustment block 15 with the suction cup through the adjustment block connecting hole 16 on the adjustment block 15 and the suction cup holder connection hole 14 on the suction cup holder 7. The fixed frame 7 is connected; the adjustment block 15 is connected with the device bracket 1 through the adjustment block installation bolt 17 . The suction cup 6 is installed in the suction cup mounting slot 13 of the suction cup fixing frame 7 . The quantity of sucker 6 is determined according to the needs of fixed parts. The vacuum generator 9 is located below the device support 1, and is connected with each suction cup 6 through a hose. the

Example two

This embodiment is a device (accompanying drawing 1) for detecting aircraft skin parts in the range of (1000*900) mm, and there are two detection contour lines. This embodiment includes a device support 1, a clamp slide rail 2, a detection clamp 4, a suction cup 6, a suction cup fixing frame 7, a scale 8, a vacuum generator 9, and an adjustment block 15, wherein the suction cup 6 and the vacuum generator 9 are finished parts , other components are as follows:

Pallet slide rail structure. There are two pallet slide rails 2, which are processed from triangular strip 45# steel. The two ends of the cardboard slide rail 2 are closed, and the middle part has a reinforcing plate, forming a slide rail groove with a triangular inner cavity. The outer surface of the groove wall of the clamp slide rail 2 is processed smoothly. Wherein, there are two through device reference holes 5 on a groove wall of the card slide rail 2, and the two device reference holes 5 are located at both ends of the card slide rail 2 respectively; on the other groove wall of the card slide rail 2 There are two sections of clamp slide rail through grooves 10, and the clamp slide rail through grooves 10 are respectively located between the closed plates at the two ends of the clamp slide rail and the reinforcing plate in the middle; middle part. the

Check the structure of the card board. The detection card board 4 is a strip plate processed from aluminum alloy material. There are protruding mating planes on the lower surfaces of both ends of the detection card 4, through which the detection card 4 and the triangular inner cavity plane of the card slide rail 2 are slidably matched. The upper surface of the detection pallet 4 is a concave arc, forming a detection pallet profile 11, and the profile of the detection pallet profile 11 is the same as the theoretical external profile of the detected part; Part positioning hole 3 is arranged at the end. A threaded fixing hole 12 of the detection card is respectively arranged on both ends of the detection card 4 , and the detection card 4 is fixed in the through groove 10 of the card slide rail through the threaded fixing hole 12 . the

Suction cup holder structure. Suction cup fixed mount 7 is to process with angle steel. Five sucker mounting slots 13 are evenly distributed on the vertical surface of the suction cup holder 7 for installing the suction cup 6; a suction cup holder connection hole 14 is respectively arranged at both ends of the suction cup holder 7 horizontal plane, one of which is a round hole , one is a long hole; the suction cup holder connection hole 14 is used to connect the adjustment block 15. the

Adjust the block structure. Adjusting block 15 is made of angle steel, and the upper end is two mutually perpendicular connecting faces, and adjusting block connecting hole 16 is arranged on vertical panel, and vertical adjusting block mounting bolt 17 is arranged with this horizontal panel on the lower surface of horizontal panel. the

The device bracket 1 is a frame structure; there is a reinforcing plate in the middle of the upper surface of the device bracket 1, and a connecting through groove is arranged on the reinforcing plate. Two pallet slide rails 2 are respectively fixed on both sides of the upper surface of the device support 1 , and the clamp slide rails 2 are all parallel to the reinforcing plate of the device support 1 . The matching plane of the lower surface of the detection card board 4 is located on the horizontal plane of the inner chamber of the card board slide rail 2; the two ends of the detection card board 4 are fixed in the through groove 10 of the card board slide rail. The scale 8 is fixed on one side of the pallet slide rail, and the position of the detection pallet 4 on the pallet slide rail is determined by the scale 8 . The number of detection clamps 4 is determined according to the number of detection contour lines of the parts to be detected. In this embodiment, there are two detection clamps 4 . the

Divide the 6 suction cup holders 7 into three groups and evenly distribute them on the device bracket 1, and connect the adjustment block 15 with the suction cup through the adjustment block connecting hole 16 on the adjustment block 15 and the suction cup holder connection hole 14 on the suction cup holder 7. The fixed frame 7 is connected; the adjustment block 15 is connected with the device bracket 1 through the adjustment block installation bolt 17 . The suction cup 6 is installed in the suction cup mounting slot 13 of the suction cup fixing frame 7 . The quantity of sucker 6 is determined according to the needs of fixed parts. The vacuum generator 9 is located below the device support 1, and is connected with each suction cup 6 through a hose. the

Claims (7)

1. aircraft skin form accuracy pick-up unit, it is characterized in that described aircraft skin flexible detection device comprises appliance stand (1), clamp slide rail (2), detection clamp (4), sucker (6), sucker fixed mount (7), scale (8), vacuum generator (9) and adjusts piece (15); Two clamp slide rails (2) are separately fixed at the upper surface both sides of appliance stand (1), and clamp slide rail (2) is all parallel with the stiffening plate of appliance stand (1); The upper surface that detects clamp (4) is a test card template face (11); The cooperation plane of detecting clamp (4) is located on the surface level of inner chamber of clamp slide rail (2), and two ends are fixed in the clamp slide rail groove (10); It is uniform and be fixed on the appliance stand (1) that each organizes sucker fixed mount (7); Sucker (6) is installed in the sucker of sucker fixed mount (7) and installs in the slotted eye (13); Vacuum generator (9) is positioned at appliance stand (1) below, and is connected with each sucker (6) by flexible pipe; Scale (8) is fixed on the side clamp slide rail (2).

2. a kind of according to claim 1 aircraft skin form accuracy pick-up unit is characterized in that, the device datum hole (5) of two perforations is arranged on the cell wall of clamp slide rail (2), and two device datum holes (5) lay respectively at the two ends of clamp slide rail (2); Two sections clamp slide rail grooves (10) are arranged on another cell wall of clamp slide rail (2), and this clamp slide rail groove (10) lays respectively between the stiffening plate at the closure plate at clamp slide rail two ends and middle part; Clamp slide rail groove (10) is positioned at the middle part of cell wall height.

3. a kind of according to claim 1 aircraft skin form accuracy pick-up unit is characterized in that, detects the cooperation plane that clamp (4) two ends lower surface has protrusion.

4. a kind of according to claim 1 aircraft skin form accuracy pick-up unit is characterized in that, is evenly distributed with a plurality of suckers on the vertical plane of sucker fixed mount (7) slotted eye (13) is installed; The two ends of sucker fixed mount (7) surface level have sucker fixed mount connecting hole (14) respectively.

5. a kind of according to claim 1 aircraft skin form accuracy pick-up unit is characterized in that, on the stiffening plate of appliance stand (1) upper surface the connection groove is arranged.

6. a kind of according to claim 1 aircraft skin form accuracy pick-up unit is characterized in that, the piece connecting hole (16) of adjustment is arranged on the vertical panel of adjustment piece (15); The lower surface of adjusting piece (15) horizontal panel has the vertical piece erection bolt (17) of adjusting with this horizontal panel.

7. a kind of according to claim 1 aircraft skin form accuracy pick-up unit is characterized in that, the outer theoretical outer mold surface just as detected part of test card template face (11).

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