CN110900481A - Flexible array aircraft skin adsorbs frock - Google Patents
Flexible array aircraft skin adsorbs frock Download PDFInfo
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- CN110900481A CN110900481A CN201911076664.5A CN201911076664A CN110900481A CN 110900481 A CN110900481 A CN 110900481A CN 201911076664 A CN201911076664 A CN 201911076664A CN 110900481 A CN110900481 A CN 110900481A
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- aircraft skin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/005—Vacuum work holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/08—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for attachment of work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The invention discloses a flexible array type aircraft skin adsorption tool, which belongs to the technical field of aircraft assembly and comprises a base and a plurality of adsorption units, wherein the adsorption units are arranged on the base: the movable platform is movably arranged on the base, a frame is arranged on the movable platform, an upright post adaptive to the shape of the skin of the airplane is arranged in the frame, and a plurality of vacuum adsorption units are arranged on the upright post; the driving mechanism drives the movable platform to slide on the base along the Y direction, and the Y direction is vertical to the position surface where the aircraft skin is located; the bottom end of the upright post is provided with a Z-direction adjustable positioning stop block for positioning the placing height of the skin in the Z direction; connecting blocks are arranged on two sides of the frame, a movable block capable of moving along the X direction is arranged on the connecting block on one side, and positioning pin holes matched with the positioning holes in the skin lug plates are arranged on the movable block and the connecting block on the other side. And positioning and clamping the corresponding workpiece through the rapid reconstruction of the vacuum adsorption unit.
Description
Technical Field
The invention relates to the technical field of aircraft assembly, in particular to a flexible array type aircraft skin adsorption tool.
Background
Aircraft manufacturing is a complex production process, the aircraft assembly workload accounts for about 40% -50% of the whole aircraft manufacturing labor, and the quality of the final product depends on the quality of assembly to a great extent.
The airplane assembly is an important link of airplane manufacturing, the coordination between parts, parts and tools, and between tools is ensured, and the airplane manufacturing coordination mode for ensuring the assembly accuracy is an important characteristic of airplane manufacturing.
The shapes and sizes with the coordination requirements are transferred in analog quantity through a series of special technological equipment and are transferred to parts and components step by step. In the transmission process, a certain number of public links exist, the more public links are, the less non-public links are, and the higher the coordination accuracy is. This coordination method can ensure a high coordination accuracy with a low manufacturing accuracy.
The wallboard type components are main structural members forming the aerodynamic shape of the airplane, and are large in number, complex in shape and weak in rigidity. The assembling process mainly comprises positioning, clamping, hole making, connecting and the like. At present, the traditional rigid tool in the form of one frame for one use is still adopted for assembling wallboard components in the domestic aviation industry, and the traditional rigid tool is low in modularization degree, poor in reconfigurability and lack of universality.
When clamping and positioning some workpieces, a tool clamp is needed, the traditional tool clamp utilizes a clamping part on the traditional tool clamp to be fixed at a certain position of the workpiece to clamp the workpiece, but the structure of some workpieces is complex, and a proper clamping surface or clamping position is difficult to find; and the clamping and positioning of some workpieces with special structures can not be realized by using a common tool clamp, and only a set of new tool clamp can be redesigned and developed aiming at the specific structure of the workpiece. This will seriously affect the progress of new product development and product efficiency.
Disclosure of Invention
The invention aims to provide a flexible array type aircraft skin adsorption tool, which solves the problems of poor reconfigurability, lack of universality, low positioning precision and the like of a skin positioning and holding tool during the assembly of an existing aircraft wallboard.
In order to achieve the purpose, the flexible array type aircraft skin adsorption tool provided by the invention comprises a base and a clamping device arranged on the base, wherein the clamping device comprises:
the movable platform is movably arranged on the base, a frame is arranged on the movable platform, an upright post adaptive to the shape of the skin of the airplane is arranged in the frame, and a plurality of vacuum adsorption units are arranged on the upright post;
the driving mechanism drives the movable platform to slide on the base along the Y direction, and the Y direction is vertical to the position surface where the aircraft skin is located;
the bottom end of the upright post is provided with a Z-direction adjustable positioning stop block for positioning the placing height of the skin in the Z direction; connecting blocks are arranged on two sides of the frame, a movable block capable of moving along the X direction is arranged on the connecting block on one side, and positioning pin holes matched with the positioning holes in the skin lug plates are arranged on the movable block and the connecting block on the other side.
Among the above-mentioned technical scheme, the movable platform can move on the base to satisfy the different assembly position requirements of technology, the vacuum adsorption unit of this frock can constitute different dot matrixes through controlling respective protrusion distance. The positions of the positioning baffle and the positioning pin hole can move along the linear guide rail so as to realize positioning of skins of different specifications and really realize flexibility of the skin tool. The tool can complete digital positioning and drilling-riveting assembly of various wallboard skins, can reduce the number of tools, shorten the production preparation period, improve the positioning precision, can be used for workpieces with complex structures and difficult finding of proper clamping positions and clamping surfaces in the field of mechanical engineering, and can position and clamp corresponding workpieces through rapid reconstruction of the vacuum adsorption unit.
In the working process, the movable platform moves along the Y direction, semi-closed loop feedback control is realized by utilizing a motor encoder, and a plurality of photoelectric switches are arranged according to the process requirements for detecting and zeroing the position of the tool. The product appearance is analyzed and the positions of the stand column spacing, the positioning stop block and the positioning pin hole are manually adjusted by combining an assembly process, a control system drives the vacuum adsorption unit to move according to the theory or the actual measurement data of the skin outline, an air source switch of the vacuum adsorption unit is opened, the skin is positioned through the stop block and the positioning pin and is placed on the tool, a rubber sucker of the vacuum adsorption unit adapts to the skin appearance through the random swing of the rubber sucker, and the positioning and the clamping of the skin are completed through the adsorption force generated by the sucker; the Y-direction driving unit can drive the tool to move to a specified position to be matched with the frame.
In order to facilitate the movement of the movable platform, preferably, the driving mechanism comprises a motor fixed on the base, a ball screw connected to the output end of the motor and a screw nut matched with the ball screw, and the movable platform is fixed on the screw nut; guide rails and sliding blocks are arranged on two sides of the base, and the sliding blocks are fixed at the bottom of the movable platform.
In order to prevent the movable platform from overtravel, preferably, two ends of the guide rail are provided with limit blocks for preventing the movable platform from overtravel.
Preferably, the vacuum adsorption unit comprises a support, a mounting sleeve fixed with the support and a telescopic sleeve which is telescopic and movable in the mounting sleeve;
one end of the telescopic sleeve is connected with a driving mechanism for driving the telescopic sleeve, and the other end of the telescopic sleeve is provided with a swinging sucker assembly with an adjustable disk surface angle;
the support is provided with a pressure sensor for detecting the pressure applied to the telescopic sleeve, and the pressure sensor is used for sending a signal for controlling the telescopic amount of the telescopic sleeve.
The swing sucker assembly can be adaptive to the shape rotation of the skin, the skin is adsorbed through the adsorption force generated by negative pressure in the sucker, and the skin shape positioning is realized by utilizing the fixed contact point at the center of the sucker to be in surface contact with the skin. A pressure sensor in the vacuum adsorption unit judges whether skin is adsorbed in place or not by detecting pressure change, after the processes of drilling and the like are completed, the tool is wholly withdrawn, deburring and the like are carried out, then the tool is moved to a matching position again, the processes of pre-connection and the like are carried out, after all the processes are completed, an air source is closed, and the tool is withdrawn.
The rubber sucker can form a cavity with high air tightness on the surfaces of skins such as metal and composite materials, the skins can be sucked and clamped by sufficient adsorption force after being vacuumized, each shaft motor is provided with a band-type brake, and a tool can be locked at any position; the key positioning position is measured and optimized by using auxiliary equipment such as a laser tracker, the whole tool system is strong in anti-interference capability, high in modularization degree, easy to maintain and high in positioning accuracy.
Preferably, the drive mechanism includes:
the ball screw penetrates through the screw nut and extends into the telescopic sleeve;
and a motor for driving the ball screw to rotate;
the ball screw is provided with a support ring, and a bearing seat which is abutted against the support ring is arranged in the mounting sleeve; the pressure sensor is arranged between the bearing seat and the bracket.
Preferably, the swing cup assembly comprises:
the sucker is fixed on a sucker base with a hollow inner part, and the bottom of the sucker base is a spherical surface; the sucker is provided with a vent hole communicated with the cavity of the sucker base;
the bottom of the ball support is connected with the top end of the telescopic sleeve, and the top of the ball support is provided with a spherical cavity matched with the spherical surface;
the hollow center rod connects the sucker base with the ball support seat together, and communicates the cavity of the sucker base to the telescopic sleeve.
Preferably, a circumferential limiting mechanism for limiting the rotation of the telescopic sleeve is arranged on the mounting sleeve; the circumference stop gear is including installing on the outer wall of installation sleeve and can follow the telescopic link that the axial is flexible and with the top connection of telescopic link fixed to the connecting piece of ball support bottom.
As preferred, the installation sleeve is equipped with the flexible air guide rod that communicates to the inside cavity of installation sleeve outward, and the bottom at the installation sleeve is fixed to the one end of flexible air guide rod, and the other end is connected to the bottom of swing sucking disc subassembly through a connecting piece.
Preferably, a gas pipe joint is arranged between the telescopic gas guide rod and the mounting sleeve; the outer wall of the mounting sleeve is provided with a support frame for stabilizing the telescopic air guide rod.
Preferably, the top and the bottom of the frame are provided with linear guide rails along the X direction, and the upright posts are movably arranged in the frame through the linear guide rails. The upright post can move along the X direction on the linear guide rail, so the distance between the upright post and the linear guide rail can be adjusted.
Compared with the prior art, the invention has the beneficial effects that:
the invention can position skin products with different shapes and sizes by the dot matrix reconstruction of the vacuum adsorption unit, the self-adaptive rotation of the sucking disc and the adjustment of the distance between the stand columns, the position of the positioning pin hole and the position of the positioning stop block, and the tool system has strong flexibility and universality based on the flexible tool technology and the digital control technology. The motion data of the vacuum adsorption unit of the system, the distance between the upright columns, the positions of the positioning pin holes and the positions of the positioning stop blocks are generated by special calculation software. The invention can complete digital positioning and adsorption clamping of skins with different specifications, can well meet the requirements on assembly precision and assembly efficiency, and can also solve the positioning and clamping problems of workpieces with complex structures in the field of mechanical manufacturing.
Drawings
FIG. 1 is a schematic structural diagram of a flexible array type aircraft skin adsorption tool in an embodiment of the invention;
FIG. 2 is a schematic view of an assembly structure of a base and a driving mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a movable platform according to an embodiment of the present invention;
FIG. 4 is a schematic view of an assembly structure of a column and a vacuum adsorption unit in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a vacuum adsorption unit according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of an aircraft skin adsorption method in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the following embodiments and accompanying drawings.
Examples
Referring to fig. 1 to 5, flexible array aircraft skin of this embodiment adsorbs frock includes base 1, Y is to actuating mechanism 2, arc stand 3, vacuum adsorption unit 4, automatically controlled cabinet 5 and protection unit 6, arc stand 3 installs on the linear guide 20 of base 1, actuating unit is located between two guide rails 20 of base 1, drive arc stand moves along the Y direction, automatically controlled cabinet 5 is located the both sides of perpendicular stand 24 on the base, vacuum adsorption unit 4 installs on arc stand 3, its axis and stand surface vertical, and it can stretch out and draw back along the axis direction, protection unit 6 distributes in whole frock, mainly include rail 23 on the operation platform, organ cover 7 on cable drag chain 8 and guide rail and the lead screw.
The base 1 is provided with a ball screw mounting seat 9 and a Y-direction movement limit stop 21, the upper surface of the base 1 is provided with two parallel guide rails 20, and the guide rails 20 are matched with sliders 19. The limit stop 21 can prevent the tool from moving over the travel. The base 1 of this embodiment is formed by the steel sheet welding, is the carrier of whole frock, and guide rail 20 is the track that the frock moved along Y to, and ball screw mount pad 9 is used for bearing ball 12, servo motor 17 and reduction gear 16, and 4 limit stop 21 are fixed in the Y of base 1 to both ends through bolted connection.
The Y-direction driving mechanism 2 consists of a Y-direction ball screw 12, a Y-direction transmission bottom plate 10, a Y-direction speed reducer 16, a Y-direction servo motor 17, a Y-direction coupler 15 and a photoelectric switch 13, wherein two ends of the Y-direction ball screw 12 are fixedly connected to a ball screw mounting seat 9 on the base 1, the Y-direction transmission bottom plate 10 is sleeved on the outer side of the Y-direction ball screw 13 and a nut 11 thereof and fixedly connected with the lower surface of the arc-shaped upright post 3 through bolts, the Y-direction servo motor 17 is fixed at one end of the ball screw mounting seat 9 through a motor mounting seat 14 and directly connected with the speed reducer 16, the servo motor is a Korman AKM series motor, the speed reducer is a series and is connected with the ball screw 12 through a coupler 15, the coupler alpha is an NBK flexible coupler, the Y-direction ball screw is a precise ball screw and is used for converting the rotary motion of the motor into the linear motion of the transmission bottom plate, the photoelectric switch 12, the photoelectric switch 12 is an ohm dragon series EX672, and the Y-direction driving unit can accurately drive the tool to move to a specified target position.
The arc-shaped upright posts 3 are arranged on the movable platform 22, the movable platform 22 is fixedly connected with the Y-direction transmission bottom plate 10 through bolts, two vertical upright posts 24 and two cross beams 28 form a portal frame and are fixedly connected with the upper surface of the movable platform 22, guide rails 29 are arranged on the upper cross beam and the lower cross beam, and the arc-shaped upright posts 3 are connected with the cross beams 28 through the guide rails 29; arc stand 3 is formed by the steel sheet welding, form certain radian according to the product characteristic, be favorable to reducing the protrusion distance of vacuum adsorption unit, improve the rigidity of whole frock, the lower extreme of arc stand 3 is installed and is fixed a position dog 31 and is used for fixing a position to the Z of covering, this position dog is "L" type structure spare that has the reinforced rib board, respectively have the metallic structure spare 25 of "L" type on the vertical column, link firmly with vertical column 24 through the bolt, one of them is equipped with linear guide slider 27, its slider can move on the X direction, all open locating pin hole 26 on this slider and another "L" type metallic structure spare, be used for fixing a position the X direction of covering, through the position of adjusting Z to the locating dog 31 and the X to locating pin hole 26, can fix a position the covering of different specifications.
The vacuum adsorption unit 4 comprises an expansion sleeve 37, a nut 38, a mounting sleeve 39, a thrust ball bearing 40, a pressure sensor 41, a ball screw mounting seat 42, a coupling 44, a ball screw 45, a motor mounting bracket 46, a servo motor 47, a planetary gear reducer 48, a telescopic guide rod 49, an air pipe joint 50, guide rod support frames 51 and 52, an "O" -shaped sealing ring 53, an air guide rod mounting seat 54 and a swing sucker assembly.
According to the vacuum adsorption unit, on the premise that the process precision requirement is met, the number and the layout of the vacuum adsorption units 4 are optimal, analysis shows that the influence of the number of the adsorption units on the deformation of the skin in the heading direction of the skin is small, and the influence can be properly reduced, and the deformation of the skin is gradually increased in the spanwise direction of the skin, so that the intervals from the middle to the adsorption units at two ends in the spanwise direction are gradually reduced.
The swing suction cup assembly comprises a suction cup base 34, a ball support bracket 35 and a rubber suction cup 33. The mounting sleeve 39 is a supporting component of the whole unit, and is mounted in the mounting hole of the arc-shaped upright post 3, one end of the mounting sleeve is fixedly connected with the mounting sleeve end cover 36, and the mounting sleeve end cover 36 is matched with the upper surface of the arc-shaped upright post 3 to perform axial positioning and is connected with the arc-shaped upright post through a bolt. The air pipe joint 50 is arranged on the mounting sleeve 39, the air guide hole in the air pipe joint is matched with the air guide hole on the mounting sleeve 39 and is used for extracting air, the ball screw mounting seat 42 and the motor mounting support 46 are fixedly connected with the mounting sleeve 39, the servo motor 47 is arranged on the motor mounting support 46, the servo motor is an AKM series of Kerr Morgan and is directly connected with the planet wheel reducer 48 which is an AF series helical gear reducer and is connected with the ball screw 45 through the coupling 44 which is a diaphragm coupling, the nut 38 is fixedly connected with the telescopic sleeve 37, the other end of the telescopic sleeve 37 is connected with the outer ball support 35 of the vacuum swing suction cup, as the telescopic guide rod 49 is fixedly connected with the mounting sleeve 39, and one end of the telescopic guide rod is connected with the ball support 35, the rotation of the telescopic sleeve 39 is limited, so that the rotation motion of the servo motor 47 is converted into the axial motion of the, the swing sucker assembly is driven to move axially, the control system drives the telescopic column array to move according to theory or actual measurement data of the outer contour of the skin, the adsorption tool can adapt to different skins through array reconstruction, the rubber sucker 33 can swing freely in the sucker base 34 to adapt to skin shapes with different curvatures, the fixed contact point in the center of the rubber sucker 33 is in contact with the skin shapes, skin shape positioning is achieved, the pressure sensor 41 is installed between the two thrust ball bearings 40 and 43 on the ball screw 45, and whether the skins are attached to frames or not can be judged by monitoring changes of axial force borne by the vacuum sucker.
The electric control cabinet 5 is a rectangular box body, is placed at two sides of the vertical upright post 24 and is fixedly connected with the vertical upright post; the electric control cabinet 5 is provided with a state indicator lamp and an alarm indicator lamp, and the front and the upper surface of the box body are provided with ventilation openings and fans for heat dissipation; the right side of the cabinet body is provided with a through hole for a cable passage, and the electric control cabinet 5 is mainly used for storing electric equipment such as a servo motor driver, a switching power supply and the like.
The protection units 6 are distributed on other units of the tool and used for guaranteeing personal safety of operators and protecting important parts from being polluted by external environment, and the fences 23 are arranged around the movable platform 22 and used for preventing the operators from falling off from the platform and other accidents. The cable drag chain 8 is positioned on the outer side of the mobile platform and is mainly used for protecting the cable, and the cable drag chain can well protect the cable during moving due to the fact that the tool needs to move, and the cable drag chain is prevented from being damaged; the organ cover 7 is mainly installed on the ball screw, can be stretched and compressed, can ensure that the ball screw and the guide rail are not interfered by external pollutants, and ensures good precision, service life and motion stability.
The specific workflow of this embodiment is as follows:
1. calculating the distance that each vacuum adsorption unit needs to extend, the distance between the clamping plates, the position of the positioning stop block 31 and the position of the positioning pin hole 26 according to the shape of the product;
2. the positions of the positioning stop block 31 and the positioning pin hole 26 are adjusted, and the vacuum adsorption unit extends out of a specified distance through specific shape-adjusting control system software;
3. conveying the skin to a tool assembly station, opening an air source switch of a vacuum adsorption unit, positioning the skin through a stop block and a pin hole, contacting the skin with the shape by using a fixed contact point in the middle of a sucking disc, positioning the skin shape, then contacting each sucking disc with the surface of the skin to form a closed cavity, and adsorbing and clamping the skin through adsorption force;
4. moving the tool to a specified position, realizing the matching of the skin and the frame by adjusting the position of the frame, and performing operations such as manufacturing a pre-connection hole;
5. withdrawing the skin adsorption tool, and performing operations such as deburring;
6. moving the skin to the designated position in the step 5 again to finish the pre-connection of the wall plate;
7. and (5) closing the air source and withdrawing the tool.
Referring to fig. 6, the adsorption method for adsorbing the skin by using the flexible array aircraft skin adsorption tool of the embodiment includes the following steps:
1) establishing a tool coordinate system in a tool installation and debugging stage;
2) before assembly is started every time, returning each unit of the tool to a zero point of the unit under a tool coordinate system;
3) based on the measured data of the skin appearance of the airplane, arranging the positions of all positioning points in the tool, and recording the coordinates of all the positioning points under the standard coordinate system of the mounting base;
4) performing coordinate transformation on each positioning point in the step 1) to a tool system coordinate system, arranging the position of the arc-shaped stand column in the X direction according to the coordinate, and calculating the telescopic length of each telescopic sleeve;
5) the motor drives the main shaft of the telescopic sleeve to stretch, and the central point of the sucker at the front end of the telescopic sleeve is guided to reach the position of each positioning point by using the encoder of the motor; simultaneously adjusting the positions of a positioning stop block at the bottom of the tool and a positioning pin hole;
6) hoisting an aircraft skin to a tool, ensuring the positioning of the skin in the Z direction by using a positioning stop block at the bottom of the tool, and limiting the movement of the skin in the X direction and the rotation of the skin along the Y axis by using a positioning pin hole to be matched with a process hole on a skin lug plate so as to complete the pre-positioning of the skin;
7) attaching the aircraft skin to the center point of the sucker which is adjusted in place, wherein the sucker at the front end of the telescopic sleeve is adaptively matched with the disk surface angle according to the curvature change of the aircraft skin until the disk surface angle is completely attached to the skin;
8) and starting the vacuumizing device to enable the aircraft skin to be tightly adsorbed on the sucking disc to finish skin fixing.
Claims (10)
1. The utility model provides a flexible array aircraft skin adsorbs frock which characterized in that, includes the base and sets up on the base:
the movable platform is movably arranged on the base, a frame is arranged on the movable platform, an upright post adaptive to the shape of an aircraft skin is arranged in the frame, and a plurality of vacuum adsorption units are arranged on the upright post;
the driving mechanism drives the movable platform to slide on the base along a Y direction, and the Y direction is vertical to a position surface where the aircraft skin is located;
the bottom end of the upright post is provided with a Z-direction adjustable positioning stop block for positioning the placing height of the skin in the Z direction; the two sides of the frame are provided with connecting blocks, a movable block capable of moving along the X direction is arranged on the connecting block on one side, and positioning pin holes matched with the positioning holes in the skin lug plates are arranged on the movable block and the connecting block on the other side.
2. The flexible array type aircraft skin adsorption tool according to claim 1, wherein the driving mechanism comprises a motor fixed on the base, a ball screw connected to an output end of the motor, and a screw nut matched with the ball screw, and the movable platform is fixed on the screw nut; guide rails and sliding blocks are arranged on two sides of the base, and the sliding blocks are fixed to the bottom of the movable platform.
3. The flexible array aircraft skin adsorption tool of claim 2, wherein two ends of the guide rail are provided with limit blocks for preventing the movable platform from overtravel.
4. The flexible array type aircraft skin adsorption tool according to claim 1, wherein the vacuum adsorption unit comprises a support, a mounting sleeve fixed with the support, and a telescopic sleeve which is telescopic in the mounting sleeve;
one end of the telescopic sleeve is connected with a driving mechanism for driving the telescopic sleeve, and the other end of the telescopic sleeve is provided with a swinging sucker assembly with an adjustable disk surface angle;
the support is provided with a pressure sensor for detecting the pressure applied to the telescopic sleeve, and the pressure sensor is used for sending a signal for controlling the telescopic amount of the telescopic sleeve.
5. The flexible array aircraft skin adsorption tooling of claim 4, wherein the driving mechanism comprises:
the ball screw penetrates through the screw nut and extends into the telescopic sleeve;
the motor drives the ball screw to rotate;
a support ring is arranged on the ball screw, and a bearing seat which is abutted against the support ring is arranged in the mounting sleeve; the pressure sensor is arranged between the bearing seat and the bracket.
6. The flexible array aircraft skin adsorption tooling of claim 4, wherein the swing suction cup assembly comprises:
the sucker is fixed on a sucker base with a hollow inner part, and the bottom of the sucker base is a spherical surface; the sucker is provided with a vent hole communicated with the cavity of the sucker base;
the bottom of the ball support is connected to the top end of the telescopic sleeve, and the top of the ball support is provided with a spherical concave cavity matched with the spherical surface;
the hollow center rod connects the sucker base and the ball support together, and communicates the cavity of the sucker base to the telescopic sleeve.
7. The flexible array type aircraft skin adsorption tool according to claim 6, wherein a circumferential limiting mechanism for limiting rotation of the telescopic sleeve is arranged on the mounting sleeve; the circumference stop gear is including installing on the outer wall of installation sleeve and can follow the telescopic link that the axial is flexible and incite somebody to action the top connection of telescopic link is fixed extremely the connecting piece of ball support bottom.
8. The flexible array aircraft skin adsorption tool of claim 4, wherein a telescopic air guide rod communicated with a cavity inside the mounting sleeve is arranged outside the mounting sleeve, one end of the telescopic air guide rod is fixed to the bottom of the mounting sleeve, and the other end of the telescopic air guide rod is connected to the bottom of the swing sucker assembly through a connecting piece.
9. The flexible array type aircraft skin adsorption tool according to claim 8, wherein an air pipe joint is arranged between the telescopic air guide rod and the mounting sleeve; and a support frame for stabilizing the telescopic air guide rod is arranged on the outer wall of the mounting sleeve.
10. The flexible array type aircraft skin adsorption tool according to claim 1, wherein linear guide rails in the X direction are arranged at the top and the bottom of the frame, and the upright posts are movably mounted in the frame through the linear guide rails.
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| CN201911076664.5A CN110900481A (en) | 2019-11-06 | 2019-11-06 | Flexible array aircraft skin adsorbs frock |
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| CN201911076664.5A CN110900481A (en) | 2019-11-06 | 2019-11-06 | Flexible array aircraft skin adsorbs frock |
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| CN115122252A (en) * | 2022-06-16 | 2022-09-30 | 南京航空航天大学 | Additive manufacturing clamping device and method |
| CN115179077A (en) * | 2022-06-24 | 2022-10-14 | 四川大学 | Flexible clamping structure and fixture machine tool |
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| CN115846886A (en) * | 2023-02-02 | 2023-03-28 | 中航西安飞机工业集团股份有限公司 | Chemical milling accurate carving method for aircraft skin |
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Application publication date: 20200324 |