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Autodesk® Revit® Autodesk® Revit® Structure Autodesk® Robot™ Structural Analysis Professional Integrating Autodesk Revit, Revit Structure, and Robot Structural Analysis Professional This paper explores the interoperability between Autodesk Revit, Revit Structure, and Robot Structural Analysis Professional—including recommended workflows, analytical modeling best practices, and the details of the data exchange between the software solutions. Structural engineers typically start the design process by interpreting architectural drawings, creating design documentation, and creating various analytical models. These analytical models must be consistently coordinated with respect to general framing layout, material and section properties, and loading. Once analysis and design is complete the design documentation is modified to reflect the most current design. This workflow is repeated for each iteration of the design process. ® ® ® ® The link between Autodesk Revit 2013 or Autodesk Revit Structure 2013 software and ® Autodesk Robot™ Structural Analysis Professional 2013 software helps make this workflow smoother by facilitating the coordination of design documentation with structural analytical design information. 1 Revit software supports the Building Information Modeling (BIM) process for structural engineers by providing a physical model of the structure to use for documentation and an associated analytical model as well as other structural attributes and properties to use for structural analysis and design. Robot Structural Analysis Professional supports BIM with its advanced analysis and multi-material design functionality. The bidirectional interoperability of Revit and Robot Structural Analysis Professional software helps reduce the time needed to create and update multiple analysis models and helps to avoid 1 Autodesk Revit 2013 contains the functionality of Autodesk® Revit® Architecture 2013, Autodesk® Revit® MEP 2013, and Autodesk® Revit® Structure 2013 software, and is available in the Autodesk® Building Design Suite Premium and Ultimate editions. To limit product name repetition, the use of the name “Revit” throughout the rest of this paper refers to both Autodesk Revit and Autodesk Revit Structure.
This paper profiles best practices for implementing building information modeling (BIM) solutions, exploring the key success factors for a successful BIM deployment, the process and staffing changes that can be expected, and the requisite training needs for BIM. Key Success Factors Let’s begin by focusing on the key success factors for a successful BIM deployment and what firms can expect as they transition from 2D or object CAD systems (sometimes called single-building modelers or virtual building modelers) to a purpose-built BIM solution like Revit® Architecture software. “A New Order of Things” At the end of 2003, Autodesk commissioned an independent research study1 that looked at the process changes, benefits, and challenges being experienced by firms implementing Revit Architecture. A key finding of the research is that practically all of the participants in the study were grappling with issues of change. To supplement the study, Autodesk conducted an online survey of their Revit Architecture customers, which included questions relating to change. In the survey, 82% of the respondents noted their design process was changing as a result of using Revit Architecture, and 80% reported that their deliverables were changing as well.
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Although current rapid prototyping methods have had a significant impact on product and process design, they are often limited in both accuracy and choice of suitable materials. Also, the current methods share little similarity to typical manufacturing processes. In this paper, a method for using CNC machining as a Rapid Prototyping process is described in order to exploit the creation of functional prototypes in a wide array of materials. The method uses a plurality of simple 2½-D toolpaths from various orientations about an axis of rotation, in order to machine the entire surface of a part without refixturing. It is our goal to automatically create these tool paths for machining, and eliminate the complex planning traditionally associated with CNC machining. The current approach to process planning involves calculating all the necessary data from the slice information of an STL model. An overview of the CNC-RP process and the process planning methodology is presented. Keywords: Rapid Prototyping, CNC Machining, Process Planning, Toolpath Generation
This paper presents the methodology and implementation of a rapid machining system using a CAD/CAM interface. Rapid Prototyping using CNC Machining (CNC-RP) is a method that has been developed which enables automatic generation of process plans for a machined component. The challenge with CNC-RP is not the technical problems of material removal, but with all of the required setup, fixture and toolpath planning, which has previously required a skilled machinist. Through the use of advanced geometric algorithms, we have implemented an interface with a CAD/CAM system that allows true automatic NC code generation directly from a CAD model with no human interaction; a capability necessary for a practical rapid prototyping system. Most commercial RP systems are based on additive processes whereby models are constructed by stacking 21/2-D cross sectional layers on top of one another. The additive RP systems are often limited in both geometric accuracy and material quality. Subtractive processes such as CNC machining have advantages over the limited choice of materials and the limited functionality of parts produced by additive processes. However, machining is not a completely automated method in either the process or fixture planning steps. There has been a need for a rapid machining system, but previous attempts to automate CNC machining have been approached from the perspective of traditional machining methods. It has become necessary to...
What software do I need to run a CNC mill? Creating a part on a CNC mill is a three phase process. The part is drawn in a CAD (Computer Aided Design) drawing program such as AutoCAD. Then a CAM (Computer Aided Manufacturing) program is used to convert the CAD drawing to G-Code. Finally, the G-code controls the CNC mill as it makes the part. We will take a look at what is involved in using these three kinds of software by sketching out the creation of a very simple part. Creating a CAD Drawing There are dozens of CAD programs with which you can create a drawing. Costs vary from free to many thousands of dollars. We are not going to get into reviews or recommendations here, but simply describe the CAD program that we know the best; TurboCAD. Let’s take a look at the steps required to create a drawing. A new drawing in TurboCAD is based on a template. In this case the template defines an A-size (8.5 x 11”) sheet using inches for dimensions and including the title block. This view is the Paper view. This is the page that prints. To work on the drawing we switch to Model view. The title block is gone and a grid appears. This is where we create our drawing. 1 To start the drawing of our sample part, use the Rectangle tool on the left side of the drawing area to create a rectangle that is 2.5” tall and 1.5” wide. You can use your mouse to define the corners of the rectangle, but you will quickly find that you need to use the parameter block at the bottom of the screen to enter the values you want if you want your drawing to be accurate. Your finished part will not be any more accurate than your drawing. Create a double line ¾” long and ¼” wide. Center it ½” above the bottom of the part.
I.R.S. SPECIFICATIONS TO BE REMOVED BEFORE PRINTING INSTRUCTIONS TO PRINTERS 1913 FORM 1040, PAGE 1 OF 4 MARGINS; TOP 1⁄2”, CENTER SIDES. PRINTS: HEAD TO HEAD PAPER: WHITE WRITING, SUB. 20. INK: BLACK FLAT SIZE: 81⁄2” x 11” PERFORATE: ON FOLD DO NOT PRINT — DO NOT PRINT — DO NOT PRINT — DO NOT PRINT TO BE FILLED IN BY COLLECTOR. Action Revised proofs requested TO BE FILLED IN BY INTERNAL REVENUE BUREAU. INCOME TAX. File No. THE PENALTY District of FOR FAILURE TO HAVE THIS RETURN IN THE HANDS OF THE COLLECTOR OF INTERNAL REVENUE ON OR BEFORE MARCH 1 IS $20 TO $1,000. Date received Signature O.K. to print Form 1040. List. No. Date Assessment List Page Line (SEE INSTRUCTIONS ON PAGE 4.) UNITED STATES INTERNAL REVENUE. RETURN OF ANNUAL NET INCOME OF INDIVIDUALS. (As provided by Act of Congress, approved October 3, 1913.) RETURN OF NET INCOME RECEIVED OR ACCRUED DURING THE YEAR ENDED DECEMBER 31, 191 . (FOR THE YEAR 1913, FROM MARCH 1, TO DECEMBER 31.) Filed by (or for) of (Full name of individual.) (Street and No.) in the City, Town, or Post Office of State of (Fill in pages 2 and 3 before making entries below.) 1. GROSS INCOME (see page 2, line 12) $ 2. GENERAL DEDUCTIONS (see page 3, line 7) $ 3. NET INCOME $ Deductions and exemptions allowed in computing income subject to the normal tax of 1 per cent. 4. Dividends and net earnings received or accrued, of corpora$ tions, etc., subject to like tax. (See page 2, line 11) 5. Amount of income on which the normal tax has been deducted and withheld at the source. (See page 2, line 9, column A) 6. Specific exemption of $3,000 or $4,000, as the case may be. (See Instructions 3 and 19) Total deductions and exemptions. (Items 4, 5, and 6) 7. TAXABLE INCOME on which the normal tax of 1 per cent is to be calculated. (See Instruction 3)