CN103920904B - A kind of general airframe curved track punching device and method - Google Patents

Abstract

The invention discloses a general arc-shaped rail hole-making device for an aircraft fuselage, which comprises a circular rail module wound around the outside of the aircraft fuselage, an arc-shaped rail module slidingly fitted along the circular rail module, and a slidingly fitted Automatic hole-making unit on the curved track module; the aircraft fuselage is divided into several areas to be drilled along the circular track module, and the automatic hole-making unit is used to complete the hole making in the area to be drilled corresponding to the curved track module Task: The circular track module includes two circular tracks, each circular track is spliced by multiple circular track components, and each circular track component is provided with a height-adjustable support foot on the side facing the fuselage. The invention has good adaptability and can be applied to a hyperboloid fuselage; it can meet the design requirements of hole position accuracy, surface roughness and aperture size accuracy; the processing range of drilling and spot facing can cover the entire circumferential area of the fuselage section, and the work efficiency is high . The invention also discloses a general method for making holes on arc-shaped rails of the aircraft fuselage.

Description

A general-purpose aircraft fuselage arc-shaped rail hole-making device and method

technical field

The invention belongs to the field of automatic hole-making for aircraft digital assembly, and in particular relates to an arc-shaped rail hole-making device and method suitable for automatically adapting to skin curvature changes of an aircraft fuselage.

Background technique

Aircraft assembly is the main link in the aircraft manufacturing process. The aircraft assembly workload accounts for about 40% to 50% of the entire aircraft manufacturing workload. The assembly workload mainly consists of hole making, countersinking and riveting. The problem of precise hole making of large aircraft parts has always been a thorny problem in the aviation industry, and so far there is no completely satisfactory solution for various structural parts.

Taking the assembly of the docking section of the fuselage of a large aircraft as an example, the number of machining holes is huge in the annular area of the docking section. As the proportion of difficult-to-machine materials such as composite materials and titanium alloys in aircraft structural materials has increased significantly, the workload of hole making has also increased rapidly. And in some cases the working space in the hole making area will be limited. In the hole-making work in the ring area of the fuselage docking section, if the traditional manual hole-making method is adopted, the labor intensity of the workers is high, the quality of the hole-making cannot be guaranteed, and the hole-making efficiency is low; if the robot hole-making method is used, due to the size of the aircraft Large, the constraints of the aircraft fuselage structure and tooling make the working space of the drilling equipment limited, and the reachable working space of the robot cannot cover all the circular drilling areas; It is bound to bring that the manufacturing cost of the machine tool is very high, so the hole making method of the machine tool is not suitable.

In this context, foreign countries first proposed and developed the flexible track automatic hole-making technology. Boeing first developed the automatic hole-making equipment for the flexible track in the docking area of the fuselage section of the large aircraft. The equipment is directly adsorbed on the curved surface of the fuselage of the equivalent section of the aircraft through the vacuum suction cup installed on the guide rail for automatic hole-making, and is installed on the guide rail. The lightweight hole making actuator can complete the drilling and spot facing functions at one time. This equipment is suitable for hole making on the surface of the aircraft fuselage in the equivalent section. It has the characteristics of light weight, high efficiency, flexibility and convenience, and a high degree of automation. hole making cycle. However, since the flexible track adopts the positioning method of vacuum suction cup and the skin of the fuselage, the hole-making actuator is light in weight, resulting in poor overall rigidity of the system and insufficient processing stability. In addition, the flexible rail automatic hole-making equipment cannot adapt to the curved surface with large curvature changes of the fuselage.

At present, there is a large gap between my country's aircraft fuselage section assembly process and foreign countries in the connection assembly process. Manual drilling and riveting is still the main method, with poor quality stability, high cost, and low hole-making efficiency. Aiming at the current situation of aircraft assembly in my country and the shortcomings of insufficient rigidity of foreign flexible track equipment, the present invention invents a method for making holes in the curved track of the aircraft fuselage. All the drilling tasks in the annular area of the fuselage part are especially suitable for the drilling of the connecting area in the butt joint assembly of the fuselage sections; at the same time, the equipment has a simple structure, takes up little space and is low in cost. From a comprehensive point of view, the large aircraft fuselage arc track hole making method has a breakthrough significance in the automatic precision hole making, and has great significance for improving the automation level of my country's aerospace manufacturing equipment industry.

Contents of the invention

In order to overcome the technical deficiencies in the butt joint assembly process of existing fuselage sections, the present invention provides a general-purpose aircraft fuselage arc rail hole making device and method, which is suitable for one-time completion of the hole position drilling in the connection area of the fuselage butt joint assembly , Countersink and other functions.

In the present invention, the multi-axis numerical control is used to drive the automatic hole-making unit, and the automatic hole-making unit can move on the arc-shaped track, and the arc-shaped track is fixed on the circular track formed by segmented splicing, and fixed by the supporting feet On the surface of the fuselage, the hole-making device can realize automatic hole-making in the circumferential direction, and has the function of spot facing. The specific disclosed technical solutions are as follows:

A general aircraft fuselage arc rail hole making device, comprising a circular track module placed around the outside of the aircraft fuselage, an arc track module slidably fitted along the circular track module, and an arc track module slidably fitted on the arc track Automatic hole-making unit on the module;

The aircraft fuselage is divided into several areas to be drilled along the circular track module, the working area corresponding to the arc track module is equal to each area to be holed, and the automatic hole making unit is used to complete the arc track module The corresponding drilling task in the area to be drilled;

The circular track module includes two circular tracks, each circular track is spliced by a plurality of circular track components, and the surface of each circular track component and the fuselage is provided with a height-adjustable support feet, and the circular track assembly at the bottom has a bracket that matches the surface of the fuselage, and the supporting feet are installed on the bracket.

Circular track module. It includes two circular tracks, and each circular track is sequentially spliced by 9 segments of upper circular track components and 1 segment of lower circular track components through bolts. Each section of the upper circular track assembly includes: a single section of circular track, supporting feet, and pins. The lower circular track assembly includes: the lower circular track and support feet. The circular track is pressed and fixed on the skin of the aircraft fuselage by the supporting feet.

Preferably, a track cage module is slidably fitted between the two circular rails, and the track cage module includes a plurality of track cages sequentially connected by cage connecting rods, and the track cage module and the arc-shaped track module are surrounded by a ring. Each rail cage is provided with cage rollers matched with the circular rail, and is also provided with a counterweight for balancing the automatic hole-making unit.

The track cage module is used to maintain the equidistantness of two circular tracks, while enhancing the rigidity of the drilling system, and can be used to check the parallelism of the tracks when the circular tracks are laid. The track cage module includes: a track cage, a cage link, a cage connector, and cage rollers. The 9 track cages are installed on the circular track through the cage rollers on both sides, and each track cage is connected with the cage connecting rod through the cage connector and keeps a corresponding distance. A counterweight is installed on the track holder to balance the weight of the automatic hole-making unit, and it is also convenient for the arc-shaped track module to change stations along the track.

Preferably, the arc track module includes an arc track base and an arc guide rail installed on the arc track base, and the two ends of the arc track base are provided with arc track connectors connected to the track holder, and the arc track The track base is also provided with arc track rollers sliding along the circular track, and locking pieces for fixing the arc track module, and the arc track base is provided with guides to guide the movement of the automatic hole-making unit. Curved rack.

The arc track module includes: arc track base, arc guide rail, arc track connecting frame, locking piece, arc track roller, arc rack. The curved track module is connected with the track cage module through the curved track connecting frame at both ends to form a closed-loop whole. The curved track module is installed on the circular track module through the curved track rollers, and can be locked and fixed on the circular track module through the locking piece.

The supporting foot includes a supporting rod, an adjusting nut, a supporting seat, a pillar, an adjusting foot and a butterfly spring. Two pillars are installed in the supporting seat, which run through the supporting seat. One end of the pillar is covered with a nut, and the other end has a A ball head for connection, the ball head is covered with an adjustment foot against the fuselage; the pillar part in the support seat is covered with a butterfly spring, one end of the butterfly spring is against the nut, and the other end is against the nut. An annular step protruding from the periphery of the pillar.

Preferably, the circular track assembly is provided with a support rod, the support seat is sleeved on the support rod, and the two sides of the support seat are provided with adjusting nuts threadedly engaged with the support rod.

The supporting height of the supporting feet is adjustable to adapt to skin surfaces with different curvatures. The support rod is fixedly installed on the circular track, the support seat is installed on the support rod through the adjustment nut, and the position of the support seat is changed by adjusting the adjustment nut, so as to realize the coarse adjustment of the support height of the support foot. Two pillars are installed on one supporting base, and the butterfly spring is compressed and deformed inside the supporting seat. The adjustment foot is installed on the lower end of the pillar through a ball joint connection, which can swing freely and flexibly. The feet are in contact with the surface of the fuselage and pressed tightly. At this time, the nut can be locked to realize fine adjustment.

Preferably, the arc length of the arc track module is a quarter of the circumference of the entire circular track. One-time installation and fixing of the curved track module can cover a quarter of the hole-making range of the entire circular track, and the preparation of all the holes in the fuselage needs to change the position of the curved track module at least four times.

Preferably, the automatic hole-making unit is equipped with an electric spindle for drilling tools and an X-axis base that slides along the arc track module, the electric spindle is installed on an intermediate pallet, and is provided with a The actuator supporting plate, the actuator supporting plate is slidably fitted on the Y-axis base, and the Y-axis base is rotatably matched with the X-axis base; the automatic hole-making unit also includes: an X-axis driving assembly for driving the The X-axis base described above moves in the X direction along the arc-shaped track module; the A-axis drive assembly is used to drive the Y-axis base to rotate around the A-axis; the Y-axis drive assembly is used to drive the actuator pallet along the The Y-axis base moves in a Y-direction line between two circular tracks, and the Y-direction line is perpendicular to the A-axis; the B-axis drive assembly is used to drive the middle supporting plate to rotate around the B-axis, and the B-axis The axis is parallel to the Y-direction straight line; the Z1-axis drive assembly is used to drive the intermediate pallet to move linearly along the Z1-axis direction, and the Z1-axis is perpendicular to the Y-direction straight line and the A-axis; the Z2-axis drive The component is used to drive the electric spindle to move linearly along the Z2 axis, and the Z2 axis is parallel to the Z1 axis.

The automatic hole making unit includes: Y-axis servo motor, B-axis servo motor, Z1-axis servo motor, Z2-axis servo motor, intermediate pallet, electric spindle, A-axis servo motor, quick-change tool holder, tool, actuator pallet, Y-axis base, X-axis base, base rollers, X-axis servo motor, X-axis gear. The automatic hole-making unit is installed on the arc-shaped track module through the base rollers, and the Y-axis base, base rollers and X-axis drive assembly are installed on the X-axis base, driving the X-axis servo motor to drive the X-axis gear to rotate, through the X-axis gear and the arc The meshing effect of the gear rack makes the automatic hole-making unit move in the X direction along the arc guide rail. The A-axis drive assembly and the actuator support plate are installed on the Y-axis base. By driving the A-axis servo motor, the Y-axis base can be driven to rotate around the A-axis. The actuator support plate is equipped with the actuator and the Y-axis drive assembly. The B-axis drive assembly can drive the actuator pallet to move linearly along the Y-axis direction by driving the Y-axis servo motor, and drive the intermediate pallet to rotate around the B-axis by driving the B-axis servo motor. The Z1-axis drive assembly, the Z2-axis drive assembly and the electric spindle are installed on the middle pallet, and the Z1-axis servo motor drives the middle pallet to move linearly along the Z1-axis direction. Driving the Z2-axis servo motor can push the electric spindle to move linearly along the Z2-axis direction. The tool is mounted on the electro-spindle with a quick-change tool holder.

The Z1-axis driving assembly and the electric spindle of the automatic hole-making unit are installed on the middle pallet, and the Z1-axis servo motor can drive the middle pallet to make a linear motion along the Z1-axis direction, which is used to compensate for the lack of driving stroke of the Z2-axis. It is suitable for double Hole processing on curved fuselage surface.

Driven by the servo motors of each axis, the hole-making unit can realize three rotation directions of X-axis, A-axis and B-axis and two linear directions of Y-axis and Z1-axis to complete spindle positioning and posture adjustment, so that the tool axis and the machining pass The normal vector of the surface is the same, and the compound machining of one-time drilling and countersinking of the tool is realized by controlling the electric spindle and Z2 feed.

The present invention also provides a general method for making holes in arc-shaped rails of aircraft fuselages, which is divided into the following steps:

1) Erect the circular track module outside the aircraft fuselage, and divide the aircraft fuselage into several areas to be drilled in the circumferential direction;

2) Arrange an arc track module that slides along the circular track module, and the fuselage area covered by the arc track module corresponds to each area to be drilled;

3) The automatic hole-making unit is installed on the arc-shaped track module, and slides along the arc-shaped track module to complete the hole-making area corresponding to the arc-shaped track module;

4) Control the arc-shaped track module to slide along the circular track module, and traverse all the areas to be processed in turn to complete the hole-making task of the entire aircraft fuselage.

The invention has the advantages of: 1) good adaptability, can apply hyperboloid fuselage; 2) can meet the processing requirements of the aircraft fuselage, especially the large-scale automatic hole making in the docking area of the fuselage section; 3) can meet the hole position accuracy, Design requirements for spot facing depth, surface roughness and dimensional accuracy; 4) Drilling and spot spot processing range can cover the entire circumferential area of the fuselage section, and the work efficiency is high.

Description of drawings

Fig. 1 is the overall structural diagram of general aircraft fuselage arc rail hole making device;

Fig. 2 is a structural diagram of a circular track module;

Fig. 3 is a cross-sectional view of a supporting foot;

Fig. 4 is the structural diagram of track cage module;

Fig. 5 is the structural diagram of arc track module and automatic hole-making unit;

Fig. 6 is a structural diagram of an automatic hole-making unit;

Names of symbols in Fig. 1: circular track module 1, track cage module 2, arc track module 3, automatic hole-making unit 4, cage connecting rod 5.

Label name among Fig. 2: single section circular track 6, bottom circular track plate 7, support pin 8, latch 9, support bar 10.

Label name among Fig. 3: adjusting nut 11, support seat 12, pillar 13, adjusting foot 14, butterfly spring 15.

Label name among Fig. 4: track cage 16, cage connector 17, cage roller 18.

The label names in Figure 5: arc track base 19, arc guide rail 20, arc track connecting frame 21, locking piece 22, arc track roller 23, arc rack 24; X represents the X-axis rotation of the automatic hole making unit Direction, Y represents the linear motion direction of the Y-axis of the automatic hole-making unit, A represents the rotation direction of the A-axis of the automatic hole-making unit, B represents the rotation direction of the B-axis of the automatic hole-making unit, Z1 represents the linear motion direction of the Z1 axis of the automatic hole-making unit, and Z2 represents the Direction of Z2-axis linear movement of automatic hole making unit.

Designation of labels in Figure 6: Y-axis servo motor 25, B-axis servo motor 26, Z1-axis servo motor 27, Z2-axis servo motor 28, intermediate support plate 29, electric spindle 30, A-axis servo motor 31, quick-change handle 32 , cutter 33, actuator pallet 34, Y-axis base 35, X-axis base 36, base roller 37, X-axis servo motor 38, X-axis gear 39.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings.

The universal arc-shaped rail hole-making device of the aircraft fuselage adopts multi-axis numerical control to drive the automatic hole-making unit 4. The hole-making unit can move on the arc-shaped track, and the arc-shaped track is fixed on the circular track formed by splicing segments Above, the hole-making system can realize automatic hole-making in the circumferential direction in sub-regions by fixing the supporting feet 10 on the surface of the fuselage, and has the function of spot facing.

As shown in FIG. 1 , the hole-making device of the present invention includes: a circular track module 1 , a track holder module 2 , an arc-shaped track module 3 and an automatic hole-making unit 4 . The circular track module 1 is placed outside the aircraft fuselage, and the track holder module 2 is used to maintain the shape of the circular track module 1, and is connected with the arc track module 3 to form a ring around the circular track module 1, which is automatically made The hole unit 4 is slidingly fitted on the arc track module 3 .

As shown in FIG. 2 , the circular track module 1 includes two circular tracks, and each circular track is composed of 9 segments of upper circular track components and 1 segment of lower circular track component spliced sequentially through pins 9 . Each section of the upper circular track assembly includes: a single-section circular track 6, a support foot 8, and a latch 9. The support foot 8 is installed on the single-section circular track 6 and is against the skin of the fuselage, and the latch 9 is used for a single section. The connection between the 6 circular tracks. The lower circular track assembly includes: the lower circular track 7, supporting feet 8 and brackets. The support is adapted to the shape of the surface of the fuselage, and the supporting feet 8 are installed on the support.

As shown in FIG. 3 , the supporting foot 8 includes a supporting rod 10 , an adjusting nut 11 , a supporting seat 12 , a pillar 13 , an adjusting foot 14 , and a butterfly spring 15 . The support rod 10 is installed on the circular track and runs through the support base 12. The adjustment nut 11 is sleeved on the support rod 10 on both sides of the support base 12 for adjusting and locking the position of the support foot 8. The pillar 13 runs through the support base 12 One end of the pillar 13 is covered with a nut, and the other end has a ball head connected to the adjustment foot 14; at the same time, the pillar part located in the support seat 12 is covered with a butterfly spring 15, and one end of the butterfly spring 15 is against the nut. , the other end against the ring-shaped step that protrudes and is located at pillar 13 peripheral surfaces.

As shown in FIG. 4 , the track cage module 2 includes: a track cage 16 , a cage link 5 , a cage connector 17 , and cage rollers 18 . A counterweight with a certain quality is arranged on the track holder 16 for balancing the weight of the automatic hole-making unit 4 . The rail holder 16 is installed on two circular rails by the holder rollers 18 on both sides, and the holder connecting rod 5 is connected on the holder connector 17 of the adjacent two rail holders 16 .

As shown in FIG. 5 , the arc track module 3 includes: arc track base 19 , arc guide rail 20 , arc track connecting frame 21 , locking piece 22 , arc track roller 23 , and arc rack 24 . The arc-shaped guide rail 20 is fixed on the arc-shaped track base 19, and the arc-shaped track connecting frame 21 is connected to the two ends of the arc-shaped track base 19, and is connected with the retainer connector 17, and the arc-shaped track base 19 passes through the arc-shaped rail roller 23 Sliding on the circular track, the locking piece 22 is used to fix the arc track base 19 on the circular track, the arc rack 24 is located on the arc track base 19, and is used to drive the automatic hole making unit 4 along the arc guide rail 20 sports.

As shown in Figure 6, the automatic hole making unit 4 includes: Y-axis servo motor 25, B-axis servo motor 26, Z1-axis servo motor 27, Z2-axis servo motor 28, intermediate pallet 29, electric spindle 30, A-axis servo motor 31. Quick-change handle 32, cutting tool 33, actuator support plate 34, Y-axis base 35, X-axis base 36, base roller 37, X-axis servo motor 38, X-axis gear 39.

The automatic hole-making unit is installed on the arc track module 3 through the base roller 37, the Y-axis base 35, the base roller 37 and the X-axis driving assembly are installed on the X-axis base 36, and the X-axis driving assembly includes an X-axis servo motor 38 and a The X-axis gear 39 on the output shaft of the X-axis servo motor 38, the X-axis servo motor 38 drives the X-axis gear 39 to rotate, and through the meshing effect of the X-axis gear 39 and the arc-shaped rack 24, the automatic hole making unit moves along the arc. The guide rail 20 moves in the X direction. The A-axis driving assembly and the actuator support plate 34 are installed on the Y-axis base 35. The A-axis driving assembly includes an A-axis servo motor 31. By driving the A-axis servo motor 31, the Y-axis base 35 can be driven to rotate around the A-axis. The actuator supporting plate 34 is provided with an actuator, a Y-axis driving assembly, and a B-axis driving assembly. The Y-axis servo motor 25 in the Y-axis driving assembly can drive the actuator supporting plate 34 to move linearly along the Y-axis direction, and the B-axis The B-axis servo motor 26 in the driving assembly can drive the intermediate support plate 29 to rotate around the B-axis. The Z1-axis driving assembly, the Z2-axis driving assembly and the electric spindle 30 are installed on the intermediate support plate 29, and the Z1-axis servo motor 27 attached to the Z1-axis drive assembly can push the intermediate support plate 29 to move linearly along the Z1-axis direction. The Z2-axis servo motor 28 driven by the Z2-axis driving assembly can push the electric spindle 30 to move linearly along the Z2-axis direction. The tool 33 is installed on the electric spindle 30 through the quick change handle 32 .

The Z1-axis driving assembly and the electric spindle 30 of the automatic hole-making unit are installed on the intermediate support plate 29, and the Z1-axis servo motor 27 is driven to push the intermediate support plate 29 to move linearly along the Z1-axis direction, which is used to compensate for the insufficient driving stroke of the Z2-axis , suitable for hole making of hyperboloid fuselage surface.

Driven by the servo motors of each axis, the hole-making unit can realize three rotation directions of X-axis, A-axis and B-axis and two linear directions of Y-axis and Z1-axis to complete spindle positioning and posture adjustment, so that the tool axis and the machining pass The normal vector of the surface is the same, and the compound machining of one-time drilling and countersinking of the tool is realized by controlling the electric spindle and Z2 feed.

Working process of the present invention is as follows:

1) Install the circular track module

The circular track module 1 includes two circular tracks, and each circular track is formed by sequentially splicing 9 segments of the upper circular track assembly and 1 segment of the lower circular track assembly through pins 9 . The supporting feet 8 are distributed on the circular track, and the supporting height of the supporting feet 8 is adjustable to adapt to skin surfaces with different curvatures. The circular track adapts to the skin surface of different curvatures of the fuselage through the freely and flexibly swinging support feet 8 and presses them tightly. The compression deformation of the butterfly spring 15 can be adjusted through the adjustment nut 11, and the load applied by the adjustment feet 14 on the skin surface can be freely adjusted. Size, so that the circular track can be compressed and fixed on the surface of the aircraft fuselage section.

2) Install the cage module

Adjust the distance between the two circular rails, install the rail cages 16 on the circular rails sequentially through the cage rollers 18, and connect the nine rail cages 16 through the cage connecting rod 5 to ensure that each rail cage 16 are evenly distributed on the circular rails to maintain the equidistantness of the two circular rails and enhance the rigidity of the drilling system.

3) Install the arc track module

The hole-making processing area in the docking area of the fuselage section of the aircraft can be divided into four areas: upper, lower, left, and right, each area accounts for a quarter of the entire circular track, and the processing range of the arc track module 3 can cover one processing area. The arc track module 3 is installed on the circular track module 1 through the arc track roller 23, and is connected with the cage link 5 through the arc track connecting frame 21 so that the arc track module 3 and the track cage module 2 are connected to form a ring to the whole. The position of the curved track module 3 on the circular track module 1 can be manually adjusted. When the curved track module 3 reaches the corresponding processing area, the curved track module 3 is locked and installed on the circular track module 1 through the locking piece 22 superior.

4) Install the automatic hole making unit

The automatic hole-making unit 4 is installed on the arc-shaped guide rail 20 through the base roller 37 , and the X-axis gear 39 meshes with the arc-shaped rack 24 . Because the mass of the automatic hole-making unit 4 is relatively large, a counterweight of corresponding quality is installed on the track holder 16 on the other side of the circular track to balance the weight of the automatic hole-making unit 4, and also to facilitate the arc track module 3 Change stations along the track.

5) Spindle positioning with tools, tool hole making and countersinking

Drive the X-axis servo motor 38 to drive the X-axis gear 39 to rotate, and the arc-shaped rack 24 meshing with the X-axis gear 39 is fixed, so that the automatic hole-making unit 4 moves along the arc-shaped guide rail 20 in the X direction. The A-axis driving assembly and the actuator support plate 34 are installed on the Y-axis base 35 , and the Y-axis base 35 can be driven to rotate around the A-axis by driving the A-axis servo motor 31 to realize the adjustment of the A-axis angle of the tool 33 . By driving the Y-axis servo motor 25, the actuator support plate 34 can be driven to move linearly along the Y-axis direction. By driving the B-axis servo motor 26 , the intermediate support plate 29 can be driven to rotate around the B-axis to realize the adjustment of the B-axis angle of the tool 33 . By adjusting the poses of the X-axis, Y-axis, A-axis, and B-axis, the axis of the tool 33 coincides with the axis of the hole to be machined.

The Z1-axis drive assembly, the Z2-axis drive assembly and the electric spindle 30 are installed on the middle support plate 29, and the Z1-axis servo motor 27 is driven to push the middle support plate 29 to move linearly along the Z1-axis direction, which is used to adjust the feed unit of the electric spindle The distance from the machined surface of the machined hole. Driving the Z2-axis servo motor 28 can realize the feed motion in the Z2-axis direction, and realize the hole-making and spot-sinking work of the tool 33 .

6) Complete all hole making

Repeat step 5), and the automatic hole making unit 4 moves to the next hole position to complete hole making and spot facing. After completing the hole making of all the holes in a processing area, loosen the connection between the locking piece 22 and the circular track, rotate the arc track module 3 along the circular track circumferentially to reach the next processing area and then lock it again, repeat the above The first step is to realize the automatic drilling of all holes in the docking area of the aircraft fuselage section.

Claims (8)

1. a general airframe curved track punching device, it is characterized in that, comprise the circuit orbit module (1) around the home outside airframe, along the arc track module (3) that described circuit orbit module (1) is slidably matched, and be slidably fitted in the automatic punching unit (4) in arc track module (3);

Described airframe is divided into along circuit orbit module (1) and somely treats drilling region, working region corresponding to arc track module (3) and each treat drilling region equity, automatic punching unit (4) is for completing the drilling task treating drilling region corresponding to arc track module (3);

Described circuit orbit module (1) comprises two circuit orbits, every bar circuit orbit is spliced by multistage circuit orbit assembly, every section of circuit orbit assembly is provided with adjustable for height feet (8) towards the side of fuselage, and the circuit orbit assembly being positioned at bottom has the support coordinated with fuselage surface, described feet (8) is rack-mount;

Article two, be sliding combined with track retainer module (2) between circuit orbit, track retainer module (2) comprises the multiple track retainers (16) connected successively by retainer connecting rod (5), and this track retainer module (2) and arc track module (3) are around ringwise.

2. airframe curved track punching device general as claimed in claim 1, it is characterized in that, each track retainer (16) is provided with the retainer roller (18) coordinated with circuit orbit, is also provided with the balancing weight for balancing described automatic punching unit (4).

3. airframe curved track punching device general as claimed in claim 1, it is characterized in that, arc track module (3) comprises arc track base (19) and is arranged on the arc-shaped guide rail (20) on arc track base (19), the two ends of arc track base (19) are provided with the arc track link (21) connecting described track retainer (16)

This arc track base (19) is also provided with the curved track roller (23) slided along circuit orbit, and for fixing the stay (22) of described arc track module (3).

4. airframe curved track punching device general as claimed in claim 3, is characterized in that, described arc track base (19) is provided with the arc-shaped rack (24) guiding automatic punching unit (4) movement.

5. airframe curved track punching device general as claimed in claim 1, it is characterized in that, described feet (8) comprises supporting seat (12), two pillars (13) are installed in supporting seat (12), this pillar (13) runs through described supporting seat (12), one end cover of pillar (13) has nut, the other end is with connection bulb, and on described bulb, cover has the adjustment pin (14) propping up fuselage;

The leg portion cover being positioned at described supporting seat (12) has butterfly spring (15), and one end of this butterfly spring (15) props up described nut, and the other end props up the ring-shaped step of projection at pillar (13) side face.

6. airframe curved track punching device general as claimed in claim 5, it is characterized in that, circuit orbit assembly is provided with support bar (10), described supporting seat (12) is set on support bar (10), and the both sides of supporting seat (12) are provided with the adjusting nut (11) with support bar (10) threaded engagement.

7. as general airframe curved track punching device that claim 1 is stated, it is characterized in that, electro spindle (30) and the arcuately X-axis base (36) that slides of rail module (3) of punching cutter described automatic punching unit be equipped with, this electro spindle (30) is arranged on a middle supporting plate (29), and the actuator supporting plate (34) be provided with for installing middle supporting plate (29), described actuator supporting plate (34) is slidably fitted on Y-axis base (35), and this Y-axis base (35) and X-axis base (36) are rotatably assorted;

Described automatic punching unit also comprises:

X-axis driven unit, for drive described X-axis base (36) arcuately rail module (3) be X to motion;

A axle driven unit, rotates around A axle for driving described Y-axis base (35);

Y-axis driven unit, for driving described actuator supporting plate (34) along Y-axis base (35) at two circuit orbit intercropping Y-direction rectilinear motions, this Y-direction linear vertical is in described A axle;

B axle driven unit, for driving described middle supporting plate (29) to rotate around B axle, this B axle and described Y-direction straight line parallel;

Z1 axle driven unit, for driving described middle supporting plate (29) to do rectilinear motion along Z1 direction of principal axis, this Z1 axle is perpendicular to described Y-direction straight line and A axle;

Z2 axle driven unit, for driving described electro spindle (30) along Z2 direction of principal axis rectilinear motion, this Z2 axle is parallel with described Z1 axle.

8. airframe curved track punching device general as claimed in claim 7, is characterized in that, described cutter is arranged on electro spindle (30) by quick change handle of a knife.