This patent relates generally to applique and, more particularly, to methods and apparatus to align applique cutters.
Applique can be applied to vehicles to define microstructures (e.g., riblets) (e.g., to alter aerodynamic characteristics) and/or alter an aesthetic appearance. The applique typically includes an adhesive to increase resiliency and/or increase the ability of the applique to adhere to a surface of a vehicle.
An example alignment rail is for use with cutting applique relative to a surface of a vehicle. The example alignment rail includes a base to contact the surface, and a body including a cross-sectional profile extending along a longitudinal axis of the alignment rail. The example alignment rail also includes a groove of the cross-sectional profile extending along the longitudinal axis, where the groove is to align movement of a cutting tool to cut the applique.
An example method includes placing an alignment rail relative to an a surface of a vehicle and placing an applique over the alignment rail. The example method also includes aligning a first surface of a cutting tool to a second surface of the alignment rail, and cutting the applique by moving the cutting tool along a longitudinal length of the alignment rail, where the cutting tool is guided by the first surface contacting the second surface.
An example system for aligning and cutting applique to be applied to a surface of a vehicle includes an alignment rail having a groove extending along a longitudinal axis of the alignment rail, and a cutting tool having a portion to be aligned and received by the groove.
Wherever possible, the same reference numbers will be used throughout the drawing(s) and accompanying written description to refer to the same or like parts.
Methods and apparatus to align applique cutters are disclosed herein. Microstructures such as riblets, for example, are typically applied to aerodynamic surfaces of an aircraft as an applique to reduce drag and/or a drag coefficient of the aircraft, which can result in overall fuel savings and/or a reduction in carbon-dioxide emissions, etc. Other applique are used for aesthetic purposes (e.g., to change or alter an appearance of the aircraft). Regardless of purpose, providing applique to a surface of an aircraft is often time-consuming and can necessitate multiple tools to ensure that the applique is properly aligned, cut, and secured to the surface of the aircraft.
Example methods and apparatus disclosed herein enable accurate and time-efficient alignment, cutting, and application of applique for use with any surface, such as an aerodynamic surface, for example. In particular, examples disclosed herein include an alignment rail to guide movement of a cutting tool to apply applique onto the surface. For example, the alignment rail includes a body and a base that contacts the surface. Further, the body includes a cross-sectional profile extending along a longitudinal axis of the alignment rail. The cross-sectional profile of the body includes a groove extending along the longitudinal axis. The groove is to align and/or position a cutting tool to guide the cutting tool during cutting of applique. As a result, the alignment rail enables the cutting tool to efficiently and accurately cut the applique without use of time-consuming and inaccurate manual alignment. Accordingly, examples disclosed herein enable dimensional control of overlap between adjacent applique pieces or of gaps between adjacent pieces of applique.
Examples disclosed herein enable parallel alignment of applique edges with uniform width on two-dimensional (2D) as well as three-dimensional (3D) contoured surfaces, thereby reducing (e.g., eliminating) “edge walk” from a straight line that can result when flat films are applied to long, curved surfaces, for example. Accordingly, maintaining edges parallel to a specified orientation can be important for some applications, such as riblet applique and aesthetic applique. Although examples disclosed herein are shown in the context of aircraft surfaces, example disclosed herein can be implemented on any appropriate 2D or 3D surface application where relatively parallel applique edges are desired.
As used herein, the term “ramped surface” refers to a surface that is ramped and/or inclined relative to a reference surface and/or a base. As used herein, the term “cutting tool” refers to a device, mechanism, assembly and/or system used to cut applique. Accordingly, the term “cutter” refers to a cutting component that directly contacts the applique. As used herein, the term “datum” refers to a fixed reference point for an alignment rail to be positioned. The datum may be predefined or based on a reference feature (e.g., a fixed component, etc.).
To position the first alignment rail 206 onto or relative to the aerodynamic body 202, examples disclosed herein utilize a laser guide 208 that is positioned on or relative to a reference datum (e.g., a component of the fuselage 114). In this example, the laser guide 208 emits a laser toward the reference datum to indicate a desired position and/or orientation of the first alignment rail 206 relative to the aerodynamic body 202. For example, the laser guide 208 may emit a laser toward the datum while constraining at least a portion of the first alignment rail 206 to position the first alignment rail 206 relative to the aerodynamic body 202. In some other examples, the laser is emitted from a known datum reference of the aircraft 100 to the alignment rail or a target associated with the alignment rail to indicate a desired position and/or alignment of the first alignment rail 206. While the illustrated example of
To position the second alignment rail 210 relative to the first alignment rail 206, the second alignment rail 210 is positioned using example spacers 212, each of which include a v-shaped clamp portion 211 with corresponding ramped surfaces 213. In particular, the spacers 212 of the illustrated example are spaced apart and/or sized to define relative spacing (e.g., relative parallel spacing) between the second alignment rail 210 and the first alignment rail 206. Accordingly, once the first alignment rail 206 and the second alignment rail 210 are mounted to the aerodynamic body 202, the applique 204 is placed over the first alignment rail 206 and the second alignment rail 210 for cutting, as discussed in greater detail below in connection with
Turning to
In operation, the laser guide 208 is positioned onto the aerodynamic body 202 based on the laser 215 emitting a laser toward a target (e.g., a datum target) and/or a datum (e.g., a fixed support, a portion of the aircraft 100, etc.) of the aircraft 100. Accordingly, the laser guide 208 is moved along with the first alignment rail 206 to ensure that the emitted laser is properly oriented, thereby aligning the first alignment rail 206 to the aerodynamic body 202. In other examples, a laser is emitted from a reference point (e.g., from the fuselage 114, from a datum of the fuselage 114) and the support post 216 or any structure coupled thereto is moved based on the emitted laser to position the first alignment rail 206. In some such examples, the laser can be emitted from the fuselage.
In some examples, the first ramped surface 310 includes a first concave surface 322 and, similarly, the second ramped surface 314 includes a second concave surface 324. Further, the first ramped surface 310 and the second ramped surface 314 of the illustrated example converge toward a groove (e.g., a center groove) 326, which extends along the longitudinal axis 308. In the illustrated example, the first ramped surface 310 of the illustrated example includes a corresponding first groove 328, and the second ramped surface 314 includes a second corresponding groove 330. In some examples, the first alignment rail 206 includes alignment holes 332 to receive a portion (e.g., a protrusion) of another alignment rail to extend an effective length thereof.
To bring the first alignment rail 206 in contact with a surface of the aerodynamic body 202, the base 302 is placed onto the aerodynamic body 202 with the groove 326 facing upward (in the view of
To align movement of the aforementioned cutting tool 500 when cutting applique, the example groove 326 receives at least a portion of the cutting tool 500 of
To space the first alignment rail 206 to the second alignment rail 210, the spacers 212 shown in
In some examples, the first alignment rail 206 is manufactured via additive manufacturing (e.g., 3D Metal Printing, 3D Wax Printing, 3D Binder Jet Sand Mold Printing, etc.) to form a structure with a varied internal cross section spanning a solid fill. In some examples, the holes 332 can be used to anchor pins to cellular structures to reduce weight or stiffness of a corresponding structure. In some examples, the first alignment rail 206 is manufactured from synthetic polymers and/or 3D printing filaments such as, nylon, polyethylene resin, Armadillo™, foam, etc.
Turning to
In operation, the channel 512 of the illustrated example is to receive a portion of the first alignment rail 206. In particular, the first ramped surface 310 of the first alignment rail 206 is to contact the first ramped surface 506 of the cutting tool 500, and the second ramped surface 314 of the first alignment rail 206 is to contact the second ramped surface 508 of the cutting tool 500, thereby laterally constraining the cutting tool 500 to the first alignment rail 206.
To facilitate movement of the cutting tool 500 along the length of the first alignment rail 206, the ball bearings 516 are received by the groove 326 of the first alignment rail 206. As a result, the cutting tool 500 moves longitudinally along the first alignment rail 206 as the ball bearings contact the groove 326 and rotate as the cutting tool 500 is moved along the first alignment rail 206.
To cut the applique 204 during motion of the cutting tool 500, the cutting tool 500 includes the first cutter 520 (e.g., a blade) on the first ramped surface 506, and the second cutter 522 on the second ramped surface 508. In some examples, the cutting tool 500 only includes one of the first cutter 520 or the second cutter 522. In this example, the first cutter 520 is received by the first groove 328 of the first alignment rail 206 and, likewise, the second cutter 522 is received by the second groove 330 of the first alignment rail 206 to cut the applique 204 when the applique 204 is positioned over the first ramped surface 310 and the second ramped surface 314.
To place the cutting tool 700 onto the alignment rail 600, the channel 710 is brought into contact with the first end 604 of the alignment rail 600 and the protrusions 712 of the guides 705, 706 constrain the cutting tool 700 relative to the alignment rail 600 due to a relative sizing of the protrusions 712 and the gap 714. Additionally or alternatively, the protrusion 716 is received by the groove 612 to maintain alignment of the cutting tool 700 relative to the alignment rail 600.
In some examples, the applique 204 is positioned on a first side 614 of the alignment rail 600 and the alignment rail 600 is pivoted along a direction generally indicated by an arrow 720 as the example cutting tool 700 and the cutter 718 are slid along the alignment rail 600. In some examples, the cutter 718 is spring-loaded.
According to the illustrated example, the first alignment rail 206 is placed relative to the aerodynamic body 202 of the aircraft 100 (block 904). For example, the first alignment rail 206 is placed onto the aerodynamic body 202 of the aircraft 100 based on the datum reference.
Next, the applique 204 is placed over the first alignment rail 206 (block 906). In this example, the applique 204 is placed over (e.g., laid over) the first ramped surface 310 of the first alignment rail 206.
In this example, a surface of the cutting tool 500 is aligned to a surface of the first alignment rail 206 (block 908). For example, the channel 512 (e.g., defined by the first ramped surface 506 and the second ramped surface 508) of the cutting tool 500 is aligned with respective surfaces and/or contours of the first alignment rail 206. In particular, the cutting tool 500 is aligned with the first alignment rail 206 due to the groove 326 receiving the ball bearings 516 of the cutting tool 500.
Subsequently, the cutting tool 500 is moved along the first alignment rail 206 to cut the applique 204 (block 910). For example, the cutting tool 500 is moved along the longitudinal length of the first alignment rail 206 to cut the applique 204 and the method 900 ends.
Examples are described below in accordance with teachings of this disclosure. The examples set forth are numbered for clarity. Example 1 includes an alignment rail for use with cutting applique relative to a surface of a vehicle. The example alignment rail includes a base to contact the surface, and a body including a cross-sectional profile extending along a longitudinal axis of the alignment rail. The example alignment rail also includes a groove of the cross-sectional profile extending along the longitudinal axis, where the groove is to align movement of a cutting tool to cut the applique.
Example 2 includes the alignment rail of Example 1, where the cross-sectional profile includes a first ramped surface on a first side of the cross-sectional profile and a second ramped surface on a second side of the cross-sectional profile that is opposite the first side.
Example 3 includes the alignment rail of Example 2, where the first and second ramped surfaces include respective first and second concave surfaces.
Example 4 includes the alignment rail of Example 2, where the first and second ramped surfaces converge toward the groove.
Example 5 includes the alignment rail of Example 4, where the groove is a first groove, and further including a second groove to enable a cutter of the cutting tool to extend therethrough when the applique is positioned over at least one of the first or second ramped surfaces.
Example 6 includes the alignment rail of Example 5, where the second groove is to receive a bearing of the cutting tool.
Example 7 includes the alignment rail of Example 2, where each of the first and second ramped surfaces includes a varying slope along a direction away from the base.
Example 8 includes a method, which includes placing an alignment rail relative to a surface of a vehicle and placing an applique over the alignment rail. The example method also includes aligning a first surface of a cutting tool to a second surface of the alignment rail, and cutting the applique by moving the cutting tool along a longitudinal length of the alignment rail, where the cutting tool is guided by the first surface contacting the second surface.
Example 9 includes the method of Example 8, and further includes aligning the alignment rail based on a datum of the vehicle or a spacer coupled to another alignment rail.
Example 10 includes the method of Example 9, where the datum is defined via a laser guide mounted to the datum.
Example 11 includes the method of Example 8, where placing the applique over the alignment rail includes placing the applique on a ramped surface of the alignment rail.
Example 12 includes the method of Example 11, where the ramped surface includes a concave surface.
Example 13 includes the method of Example 11, where the ramped surface is a first ramped surface and the applique is a first applique, and further including placing a second applique on a second ramped surface of the alignment rail.
Example 14 includes the method of Example 8, where the second surface of the alignment rail at least partially defines a groove extending along the longitudinal length.
Example 15 includes the method of Example 8, where the groove is a first groove, and wherein a cutter of the cutting tool extends into a second groove of the alignment rail as the cutting tool moves along the longitudinal length.
Example 16 includes a system for aligning and cutting applique to be applied to a surface of a vehicle. The example system includes an alignment rail having a groove extending along a longitudinal axis of the alignment rail, and a cutting tool having a portion to be aligned and received by the groove.
Example 17 includes the system of Example 16, where the alignment rail includes a ramped surface to align the applique for cutting.
Example 18 includes the system of Example 17, where the ramped surface is a first ramped surface, and wherein the cutting tool includes a second ramped surface to be placed in contact with the first ramped surface during cutting of the applique.
Example 19 includes the system of Example 16, where the groove is a first groove, and wherein the alignment rail further includes a second groove, the cutting tool including a cutter to be received by the second groove.
Example 20 includes the system of Example 16, where the alignment rail is a first alignment rail and further including a second alignment rail to be spaced apart from the first alignment rail via a spacer, the spacer sized to align the second alignment rail parallel relative to the first alignment rail.
From the foregoing, it will be appreciated that the above disclosed methods, apparatus and systems enable efficient and accurate alignment, cutting, and application of applique to an aircraft and other relatively large surfaces. In particular, examples disclosed herein enable applique to be applied with less time, thereby saving labor and costs typically associated with known applique application techniques.
Although certain example methods, apparatus and systems have been disclosed herein, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all methods, apparatus and systems fairly falling within the scope of the claims of this patent. While aircraft are described in the examples disclosed herein, the examples disclosed herein may be applied to vehicles, aerodynamic structures, etc. Further, examples disclosed herein can be used with any type of applied material in any appropriate application.