This disclosure generally relates to surface coatings, and more specifically to an automated system for cleaning one or more sections of understructure for the application of nutplates.
Coatings of various types may be applied to surfaces of structures and vehicles to alter or enhance properties of respective surfaces. For example, some coatings may be applied to provide a weather-resistant layer to protect the underlaying structure. As another example, a coating may be applied to reduce vibrations or other deleterious effects during operation of an aircraft.
These coatings may be applied to one or more panels prior to installing said panels to the aircraft. Typically, there are predrilled holes in the one or more panels for fastener installation. In order to maximize efficiency, the coatings have been applied first over the one or more panels. A later manufacturing step is to install a plurality of nutplates onto the one or more sections of understructure so as to fasten down the one or more panels to the aircraft. Before installing the plurality of nutplates, the coatings applied to the one or more sections of understructure have to be removed around the area where the plurality of nutplates are to be installed so as to provide better bonding strength for a given adhesive to be used to couple the plurality of nutplates to the one or more sections of understructure. There exists a problem wherein manual surface preparation methods lead to variations in bonding strength of the adhesive, resulting in disbonded nutplates.
To assist in understanding the present disclosure, reference is now made to the following description taken in conjunction with the accompanying drawings, in which:
To facilitate a better understanding of the present disclosure, the following examples of certain embodiments are given. The following examples are not to be read to limit or define the scope of the disclosure. Embodiments of the present disclosure and its advantages are best understood by referring to
As described, surface coatings may be applied onto one or more panels prior to installing the one or more panels onto an aircraft. It may be difficult to accurately remove a portion of the coatings prior to coupling the plurality of nutplates used in fastening the one or more panels to the aircraft. Described herein are various systems and methods that provide an improvement in surface preparation of the one or more panels by using an automated laser system.
Processing circuitry performs or manages the operations of the component. Processing circuitry may include hardware and/or software. Examples of a processing circuitry include one or more computers, one or more microprocessors, one or more applications, etc. In certain embodiments, processing circuitry executes logic (e.g., instructions) to perform actions (e.g., operations), such as generating output from input. The logic executed by processing circuitry may be encoded in one or more tangible, non-transitory computer readable media (such as memory). For example, the logic may comprise a computer program, software, computer executable instructions, and/or instructions capable of being executed by a computer. In particular embodiments, the operations of the embodiments may be performed by one or more computer readable media storing, embodied with, and/or encoded with a computer program and/or having a stored and/or an encoded computer program.
Memory (or memory unit) stores information. Memory may comprise one or more non-transitory, tangible, computer-readable, and/or computer-executable storage media. Examples of memory include computer memory (for example, RAM or ROM), mass storage media (for example, a hard disk), removable storage media (for example, a Compact Disk (CD) or a Digital Video Disk (DVD)), database and/or network storage (for example, a server), and/or other computer-readable medium.
Herein, a computer-readable non-transitory storage medium or media may include one or more semiconductor-based or other integrated circuits (ICs) (such field-programmable gate arrays (FPGAs) or application-specific ICs (ASICs)), hard disk drives (HDDs), hybrid hard drives (HHDs), optical discs, optical disc drives (ODDs), magneto-optical discs, magneto-optical drives, floppy diskettes, floppy disk drives (FDDs), magnetic tapes, solid-state drives (SSDs), RAM-drives, SECURE DIGITAL cards or drives, any other suitable computer-readable non-transitory storage media, or any suitable combination of two or more of these, where appropriate. A computer-readable non-transitory storage medium may be volatile, non-volatile, or a combination of volatile and non-volatile, where appropriate.
As further illustrated in
For example, the vacuum connector 140 may be disposed about a first side 172 of the containment unit 135. In other embodiments, the vacuum connector 140 may be disposed about any other suitable location of the containment unit 135. In embodiments, the vacuum connector 140 may be configured to clean the interior of the containment unit 135 by providing a means of removing particulates. In one or more embodiments, the vacuum connector 140 may be coupled to a means for vacuuming about an end of the vacuum connector 140. The opposing end of the vacuum connector 140 may be fluidly coupled to the interior of the containment unit 135. During operations, the vacuum connector 140 may provide for the removal of any suitable particulates, fluids, and combinations thereof within the containment unit 135.
In one or more embodiments, the camera system 145 and the light source 150 may be disposed about a top surface 173 of the containment unit 135. In other embodiments, the camera system 145 and the light source 150 may be disposed about any other suitable location of the containment unit 135. In embodiments, any suitable camera system and light source may be used as the disclosed camera system 145 and the light source 150. The camera system 145 and/or the light source 150 may be communicatively coupled to the external controller and may be actuated by the external controller. The camera system 145 may be configured to capture an image through the end piece 170. The light source 150 may be configured to provide a light that is to be directed out of the end piece 170. Without limitations, the light produced may be a blue light or any other suitable color of light.
In one or more embodiments, the first actuator 155 and the second actuator 160 may be disposed about the top surface 173 of the containment unit 135 in addition to the camera system 145 and the light source 150. In other embodiments, the first actuator 155 and the second actuator 160 may be disposed about any other suitable location of the containment unit 135. The first actuator 155 may be configured to displace an internal component within the containment unit 135 (i.e., third internal mirror 210 in
As illustrated, the second actuator 160 may displace the end piece 170 via a linkage 175. In embodiments, the end piece 170 may be coupled to a fastening structure 180. The fastening structure 180 may be coupled to an end of the linkage 175. The opposing end of the linkage 175 may be coupled to the second actuator 160. In embodiments, the linkage 175 and the fastening structure 180 may be any suitable size, height, shape, and combinations thereof. In embodiments, the fastening structure 180 may comprise any suitable fasteners such as, but not limited to, nuts, bolts, screws, pins, washers, clamps, clips, retaining rings, and combinations thereof. As illustrated, the fastening structure 180 may comprise a base 185 and the first mirror 165. The base 185 may be any suitable size, height, shape, and combinations thereof. In embodiments, the base 185 may be coupled to the end piece 170 via guide pins and/or other suitable fasteners. In embodiments, the base 185 may comprise an internal bore (not shown) that is concentric to the internal bore of the end piece 170 (described further in
In one or more embodiments, the first internal mirror 200, the second internal mirror 205, and the third internal mirror 210 may be disposed at any suitable angle. Without limitations, the first internal mirror 200 and the second internal mirror 205 may be disposed at an angle of about 45 degrees in relation to the bottom surface 215 of the containment unit 135. Without limitations, the third internal mirror 210 may be disposed at an angle of about 45 degrees in relation to a second side 220 of the containment unit 135, wherein the second side 220 is opposite to the first side 172 (referring to
As further illustrated, the conduit 128 (referring to
In embodiments, the central bore 310 may be accessible at the attachment flange 305 and at the outlet 320. The central bore 310 may be any suitable size, shape, length, and combinations thereof. In embodiments, the length of the central bore 310 may be the same as the combined length of the body 300 and the thickness of the attachment flange 305. In one or more embodiments, the central bore 310 may be uniformly circular throughout its entire length. Without limitations, the central bore 310 may have a diameter that is about 3/16 inches, about ¼ inches, about 5/16 inches, about ⅜ inches, or any other suitable standard increment.
In one or more embodiments, the second mirror 315 may be disposed at a second end 330 of the body 300, wherein the second end 330 is opposite to the first end 325. In one or more embodiments, the second mirror 315 may be disposed at any suitable angle. Without limitations, the second mirror 315 may be disposed at an angle of about 45 degrees in relation to the central axis of the body 300. During operations, a light path may travel through the central bore 310 of the body 300. In these embodiments, the second mirror 315 may be configured to direct the light path out of the central bore 310 and through the outlet 320 at an angle in relation to the central axis of the body 300. Without limitations, the directed light path may exit the outlet 320 perpendicular to the central axis of the body 300. In embodiments, the outlet 320 may be any suitable size and/or shape. The outlet 320 may be an opening of the body 300 configured to allow access to the central bore 310.
As illustrated, there may be a vacuum bore 335 disposed within the body 300. The vacuum bore 335 may be configured to communicatively couple the secondary vacuum connector 235 (referring to
With reference to
Initially, the automated laser system 100 may index the plurality of predrilled holes. The automated laser system 100 may utilized pre-programmed routes and/or locations for each of the one or more panels via the external controller. In embodiments, the automated laser system 100 may be disposed near one of the plurality of predrilled holes. The automated laser system 100 may determine the center of the one of the plurality of predrilled holes based on the pre-programmed instructions of the external controller. The automated laser system 100 may measure any offsets in the X & Y axes of the actual center in relation to the center determined by the pre-programmed instructions. In embodiments, if the actual center is outside of an allowable tolerance, the external controller may instruct the robotic arm, the automated laser system 100, or both to re-adjust so that the automated laser system 100 is within the allowable tolerance. Without limitations, the allowable tolerance may be from about 0.1 mm to about 4 mm. In these embodiments, the third internal mirror 210 may be in the initial position within the light path of the first internal mirror 200 and/or the second internal mirror 205. The actual center and measured offsets may be determined by utilizing the camera system 145 and the light source 150. In embodiments, if the actual center is within an allowable tolerance, the automated laser system 100 may be actuated to operate the laser scanner 105.
During operations, the laser scanner 105 may be actuated to direct a laser that will travel along a light path through the automated laser system 100 and out of the end piece 170. In one or more embodiments, the laser scanner 105 may operate at a frequency of about 100 kHz. Prior to actuating the laser scanner 105, the third internal mirror 210 may be actuated to translate to the secondary position, thereby providing access between the bore 230 and the perpendicular bore of the fastening structure 180. In embodiments, the laser may travel along a light path from the laser scanner 105, through the core 230, through the perpendicular bore of the fastening structure 180, deflected by the first mirror 165 to travel through the central bore 310 of the end piece 170, and deflected by the second mirror 315 to travel out through the outlet 320 of the end piece 170.
As the automated laser system 100 operates, a means of vacuuming may be operating as well. In embodiments, the means of vacuuming may operate concurrently with, prior to, subsequent to, and combinations thereof of the actuation of the laser scanner 105. As the laser produced by the laser scanner 105 removes at least a portion of the coatings disposed on the one or more panels around the plurality of predrilled holes, the means of vacuuming may remove any particulates generated by such operation.
Upon completion of the actuation of the laser scanner 105, the automated laser system 100 may perform an optical inspection of the cleaned surface area. In these embodiments, the third internal mirror 210 may be actuated to translate back to the initial position in order to use the camera system 145 and the light source 150 to inspect the surface area near the outlet 320 of the end piece 170. If the automated laser system 100 determines that the surface area is acceptably clean, the automated laser system 100 may move on to the next one of the plurality of predrilled holes and repeat the process. If the automated laser system 100 determines that the surface area is not acceptably clean, the automated laser system 100 may perform a secondary operation to remove remaining coatings by repeating the previously disclosed methodology above.
Technical advantages of this disclosure may include one or more of the following. The automated laser system 100 described herein may reduce the amount of scrap, rework, and repair associated with disbonding nutplates. The automated laser system 100 may reduce the amount of time needed for installation in comparison to manual techniques.
The present disclosure may provide numerous advantages, such as the various technical advantages that have been described with respective to various embodiments and examples disclosed herein. Other technical advantages will be readily apparent to one skilled in the art from the following figures, descriptions, and claims. Moreover, while specific advantages have been enumerated in this disclosure, various embodiments may include all, some, or none of the enumerated advantages.
Herein, “or” is inclusive and not exclusive, unless expressly indicated otherwise or indicated otherwise by context. Therefore, herein, “A or B” means “A, B, or both,” unless expressly indicated otherwise or indicated otherwise by context. Moreover, “and” is both joint and several, unless expressly indicated otherwise or indicated otherwise by context. Therefore, herein, “A and B” means “A and B, jointly or severally,” unless expressly indicated otherwise or indicated otherwise by context.
The scope of this disclosure encompasses all changes, substitutions, variations, alterations, and modifications to the example embodiments described or illustrated herein that a person having ordinary skill in the art would comprehend. The scope of this disclosure is not limited to the example embodiments described or illustrated herein. Moreover, although this disclosure describes and illustrates respective embodiments herein as including particular components, elements, feature, functions, operations, or steps, any of these embodiments may include any combination or permutation of any of the components, elements, features, functions, operations, or steps described or illustrated anywhere herein that a person having ordinary skill in the art would comprehend. Furthermore, reference in the appended claims to an apparatus or system or a component of an apparatus or system being adapted to, arranged to, capable of, configured to, enabled to, operable to, or operative to perform a particular function encompasses that apparatus, system, component, whether or not it or that particular function is activated, turned on, or unlocked, as long as that apparatus, system, or component is so adapted, arranged, capable, configured, enabled, operable, or operative. Additionally, although this disclosure describes or illustrates particular embodiments as providing particular advantages, particular embodiments may provide none, some, or all of these advantages.
The present application claims priority to U.S. application Ser. No. 62/941,265, filed on Nov. 27, 2019, which is herein incorporated by reference in its entirety.
Number | Date | Country | |
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62941265 | Nov 2019 | US |