Carpentry is a skilled trade requiring years of apprenticeship or on the job training. There are primarily two types of carpentry—rough and finish. Rough carpentry involves the assembly of dimensional lumber or light gauge steel (LGS) framing members into structural and non-structural walls and floor sections of a building.
On-site rough carpentry is a manual process, involving reading building plans and laying out (using tape measures and various devices to set up angles) the location and position of wall and floor assemblies to meet the design specified in the building plans. Then each piece of framing material or framing members are measured, cut to size, fitted together, and fastened in place using nails (in the case of wood) or screws in the case of light gauge steel. This manual on-site carpentry centric approach dominates the industry.
The present invention eliminates this carpentry centric approach by integrating software and specialized machines to process light gauge steel framing members of different profiles so they can be assembled into wall sections without a carpenter referring to building plans, layout or manually marking and cutting. The invention described herein is faster, more accurate and reduces the need for specialized carpentry skills, saving time and money over conventional approaches to building framing.
The present invention is a digitally automated system that eliminates the carpentry centric approach by integrating software and specialized machines to process light gauge steel framing members of different profiles so they can be assembled into wall sections without a carpenter referring to building plans, layout or manually marking and cutting. The machinery provides a receiving station where either tracks or studs are placed, measured and imprinted with unique indicia indicating the placement in a wall section and in the building. The tracks and studs are processed by other machinery that cut, punch, emboss and otherwise process the framing members. The processed framing members are bundled and assembled into wall sections for placement in the building. The software directs the imprinting of the unique indicia and selects the framing members that meet all necessary criteria.
Turning first to
The assembly of the structural framing members is clearly shown in
At the tail end 40 (
The ink marks used in this method of framing effectively replace manually placed pencil or wax marks carpenters use to show where members will be cut and fastened. The inkjet printing on the LGS framing members 10, 12 by digitizing precise information from plans, eliminates interpretive errors and speeds the process of construction, making the job of framing a building a routine task that laborers (not trained carpenters) can accomplish with speed and accuracy.
The upper station 42 as seen in
As illustrated in
In operation, an operator stands in front of the receiving station 36. A parts schedule with a list of parts to be processed is displayed on a display screen (not illustrated) located adjacent to the processing machine 26 but out of the way of the operator as the operator is loading the stud 10 or track 12. The type of framing member, meaning stud or track, is indicated on the display screen. The operator then loads the type of profile to be processed on the receiving track 37. For example, assume the profile is a stud profile 10. The operator loads a stock stud member onto the receiving track 37. The caliper 46 has a clamping device that clamps onto the end of the stud 10 which not only clamps and holds the stud 10 firmly, but the caliper also measures the stud thickness to verify that it is the proper gauge to be processed. A laser (not illustrated) adjacent to the caliper 46 verifies the shape of the member. Assuming that the proper stud 10 has been placed on the receiving track 37, the caliper 46 pushes the stud 10 forward toward the tail end 40 through a measuring device 60 that measures the length of the stud 10. The length of each stud 10 is verified against data stored in the system's central controller to confirm that the length is what the stock piece is supposed to be. The stud 10 is pushed through the marking head 48 where the identifying indicia such as illustrated in
Assuming additional processing is required, the caliper 46 releases the clamping device holding the stud 10 and the operator lifts the stud 10 from the receiving track 37 and places it on the lower station 44, which is the station for processing studs. A guide clamp 62 (see
The processing of tracks 12 is the same as that described above for studs 10. The difference is that after the tracks 12 are measured and printed by the marking head 48, the tracks 12 are moved from the receiving station 36 to the upper station 42 for further processing.
Some studs 10 and track members 12 processed through receiving station 36 need no further processing. They are inventoried by the software for later assembly into wall sections with framing members that require further processing in upper station 42 or lower station 44.
The head tool 52 will process all industry standard profiles used to meet International Building Code (IBC) and local code based engineering requirements. By using industry standard profile materials, the invention described herein eliminates the limitations associated with proprietary profiles and proprietary building systems, cost of off-site manufacturing, limits of design flexibility, code compliance issues, etc. The head tool 52 is also designed to work with the many variations of tolerance in materials that are a result of manufacturing.
Embossing is done at the sides of track 12 flanges at locations where other framing members will be inserted and attached. The embossing locations are determined by the software from the framing plans. This process eliminates layout, measuring and marking of framing members, the need for specialized carpentry skills, and enables precise location and attachment of framing members virtually eliminating the errors that occur when applying traditional framing practices.
Punching track guide holes 64 occurs in the head tool 52 at the tail end 40. Guide holes 64 are critical for aligning wall sections from floor to floor (see
This significantly increases the rate at which a building can be erected. The final process in upper station 42 is cutting track 12 to the proper length. The software determines the length of the track member 12 by the length of the wall section in which it will be used.
As previously stated, lower station 44 is set up to process stud profiles 10. From the conversion of CAD information to digital code interpreted by the processing machine 26, the head tool 52 punches stud profiles 10 at precise locations where hold downs will be attached to laterally braced panels. Punching guide holes 64 for the framing of openings (doors, windows, and pass throughs) also occurs in the head tool 52 at lower station 44. Additionally, the head tool 52 can be programmed to punch holes in LGS studs 10 and tracks where other non-LGS building components are integrated, like tie rods and foundation imbeds. The final process in lower station 44 is cutting studs 10 to length. This processing of studs 10 is determined by digital interpretation of the plans by the software analyzing each member for its particular application and locations in the building. For example, studs 10 used in hallway sections of the building may receive hole punches for the attachment of lateral bracing (LGS strapping or LGS sheet panels) or stud members may be punched and cut to differing lengths based on which window or door openings they will be used to frame. The software described herein is effectively “kitting” the parts and issuing an assembly plan for the walls, and building.
To accomplish embossing, punching and cutting of the stud 10 and track 12 members the head tool 52 must perform multiple tasks at one station. To accomplish this the head tool has multiple hydraulic presses. The presses enable the head tool 52 to process all sides (web and flange) of LGS framing members.
Once track 12 and stud members 10 are processed, the software described herein inventories framing members for bundling with others that will be used to assemble specific wall sections, including framing members that were ink marked only in receiving station 36. The bundled members to be assembled into the specific wall section are placed in a storage or bundling rack 66 (see
The framing jig 30 is a unique structure for accurately assembling the wall sections. See
The jig receiving station 68 is on top of a hydraulic lift which raises and lowers the bottom track 12. The hydraulic lift raises the track 12 to firmly press the top and bottom tracks 12 together securely seating the studs 10 that are mounted between them. This eliminates non code compliant spaces between the end of a stud and the track in which it is mounted. The studs 10 are further secured by fasteners placed through the track 12 and complementary stud 10. Once the top and bottom tracks are securely seated, the hydraulic lift lowers the bottom track to relieve the compression and allow the completed wall section to be moved from the framing jig 30. Any additional bracing members, trusses or other members are attached by the assemblers until the wall section is completed in the framing jig 30. The assembled and completed wall section is then rolled off the jig receiving station 68 and placed in the hoisting rack 32 (
Turning to
At step 84 the engineering is complete and the software produces a three-dimensional building information model and bill of material which includes all of the LGS framing components including the studs 10 and tracks 12. As the bill of material has been generated, a purchase order is automatically generated to the manufacturer or supplier for the LGS framing materials. The software not only generates a bill of material, but also can be integrated with the manufacturer and supplier to generate an order and shipping schedule of the materials to the construction site. At step 86, the manufacturer or supplier of the LGS framing members produces and ships the LGS framing members based on the erection schedules supplied in step 84.
At step 88 the LGS framing members are processed by the Digitally Automated Framing System 22 as described above in the Description of the Preferred Embodiment. At step 88 the processed framing components analyze the specifications of each framing component, the LGS members have their unique codes applied by the ink jet printer 48, and the LGS member may be punched, cut, or embossed as the specifications dictate. The processed components are sorted by the software according to the wall section 8 in which they will be used and stored on the bundling racks 66 prior to being assembled in the framing jig 30 at step 90 according to their ink jet markings. Once assembled, the wall sections 8 are moved to a hoisting rack 32 at step 92 which is lifted onto the building and erected in place by the ink jet printed code on each section.
At step 94 the workers erect the walls and floors (or other marked LGS members) based on the ink jet printed indicia 50 on each of the LGS components. The workers are not specialized carpenters as all the field work normally done by the carpenters has been removed and replaced by the Digitally Automated Framing System 22.
In step 202 a third party architect has prepared a computer aided design (CAD) architectural plan. The architectural plan shows the location and dimension of the walls and floors of the building. At step 204 the architectural plans are converted into a 3 dimensional model by the software for processing by the rest of the software application as further illustrated in
In step 208 loads are applied to the walls, floors and roof of a building based on international and local building codes. Load path is assessed using required combinations-based criteria load path analysis—floor by floor from the roof to the foundation. Vertical and lateral loads are applied to the building in step 210, and in step 212 the load path through the building is analyzed.
Once code based structural performance has been determined in steps 208, 210, 212, the software resolves the framing of the building in the engineering design module step 214 by selecting framing components in step 216, including studs, track, floor trusses or joists and lateral bracing (i.e. steel strapping) from a data base 218 of these materials built into the software. These framing materials are manufactured by third parties and meet American Iron and Steel Institute (AISI) cold-formed steel structural members industry standards such as illustrated in
In resolving the structural framing, the engineering design module 214 sizes each component for optimal performance and precise location in the building. During optimization each wall stud 10 for example is sized for its optimal performance based on the gauge of steel and shape of stud 10 that best meets the vertical loading criteria. This is unique to the invention. For example, typical load bearing engineering design would call for the same gauge studs throughout a wall line or throughout the floor of a building because it is not practical, efficient or cost effective to analyze and draw each stud. This approach leads to the use of more material of a thicker gauge than required, which increases the weight of the structure, requiring more foundation and increasing the cost of the framing over the invention described herein. This invention results in selecting the optimum gauge of stud 10 and track 12, and other framing components, and thus decreases the weight and cost of the building.
The final step in this automated design process in
In step 242 structural walls in the building are segmented for onsite assembly and erection into the building. Once the materials are specified, and the walls segmented, the materials are scheduled for manufacturing and procurement in step 244 based on the general contractors building schedule of 245. The scheduling and logistics step 244 links with a third-party manufacturer of LGS steel framing material and floor decking in step 246 at the third-party manufacturing location. The manufactured materials are shipped in step 248 and delivered to the jobsite in step 250.
Material shipping is based on a production schedule generated in step 252 and further refined and adjusted to “just-in-time” based on an agile yard management module 254 which controls the daily jobsite deliveries from step 250 based on the actual jobsite framing production (processing and erection of the building), which can vary due to site condition (weather, unforeseen delays, etc.) common during construction of a building.
The processed framing members are assembled and moved to the storage and bundling racks 66 at step 276 based on the printed ink jet codes applied to the members in step 268. They are then assembled into the wall segments in the framing jig 30. At step 278 they are hoisted onto the building and erected into the building structural and infill walls. Step 280 is a monitoring module for site workers to process and monitor the erection of the framing as it progresses through final construction.
Thus there has been provided a digitally automated framing system that speeds the construction of framing walls in a building. While the invention has been described in conjunction with a specific embodiment, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications and variations as fall within the spirit and scope of the appended claims.
This application is based on and claims priority of provisional patent application 63/250,293, filed Sep. 30, 2021, and is fully incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/US22/76264 | 9/12/2022 | WO |
Number | Date | Country | |
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63250293 | Sep 2021 | US |