Graphics 3,4,9,11 Crossword
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
                                                          
 
 
Down: 1) Sketching defined the topology of the profile -Constraining defines the geometry of the profile -Size, Location & orientation of geometric elements2) -Parameters linked across features in a part -Parameters also can be linked between pats in an assembly4) dimension used to describe general size5) -World Coordinate -Local Coordinate -drawing surface -used to orient the profile sketches used in feature generation 6) -Defining features and relation of features within a model -Constraints based modeling is also know as FEATURE BASED MODELING7) -Model defined as a series of modifiable feature -A hole bored through a model -Fillet added to an interior corner -Each feature can be created independent of other features or linked.... So modification to one will update others9) – Dimensioning and Tolerances – Line conventions and lettering –Metric drawing sheet size Metric drawing sheet size – Screw thread representation10) -internal member is sized for either a slight clearance or so that it contacts the external member -So it is either a complete clearance or slight contact 14) Algebraic equation driven constraints- flexibly control geometry and dimensions in a part model. Creates ability to make multi-3D design- driven parts cpntrolled by changing variables 17) difference between upper & lower limits of a single part18) Created by revolving a shape that lies in a single plane around an axis in the same plane to create a closed solid object -solids of revolution -directrix can be rotated about an axis 19) -Implicit- Modeler infers the constraint based on the way the sketch was drawn -Explicit- Operator has to explicitly apply constraints to sketch20) a set of points occupying different positions which are equidistant from a center point -360 of arc 22) -generates surface using a series of directrix curve -use of 2 or more directrix curves to define a surface 25) the total allowable variance in a dimension; difference between the upper and lower limit26) American- (ANSI) American Society of Mechanical Engineering (ASME) International Standards (ISO) others (ASTM)(SAE) 29) max & min sizes shown by the tolerated dimension 30) Can be created by a point moving along path where sum of its distance from the foci (F1&F2) is = to major diameter -minor axis -major axis31) -Critical part of constraints -Must model carefully & document so that it behaves as expected when features are modified -behavior should reflect the design intent of the product -sources of data; reused of existing models -eventual use; FEA,CNC rapid protyping tools -Model Standards Across: 1) Two toleranced mating parts will always leave a space or clearance when assembled -internal member is always smaller than external member so that parts always slide together -positive allowance 3) 1. Detail drawings of each nonstandard part Detail drawings of each nonstandard part 2. An assembly or subassembly drawing showing all the standard and showing all the standard and nonstandard parts in a single drawing 3. A bill f t i l (BOM) A bill of materials (BOM) 4. A title block8) -Modifiable Constraints, Control geometry of each of the features -Dynamic model;updated as design requirements are changed Used to bring parts & sub-assemblies together to represent the final product assembly 11) an assembly model from single geometric parts 12) theoretical size used as a starting point for tolerance13) Capabilities built in Solid-modeling software in order to solve for the specified volumes and weights for part models 15) _primary features -Defined the overall functional form of the part -10% of final form -Detail features -Create geometry necessary for a particular manufacturing process, functional role, fastener attachment or tactile/visual qualities of the part -Fillets/rounds, through hole, etc 16) condition of a part when it contains the least amount of material 21) min clearance or max interference between parts 23) -Degree of tightness between mating parts is called the fit 1)Clearance 2)Interference 3)Transition 4)Line 24) -Uses a polynomial to approximate the shape of a polygo formed by the specified vertices -Order of polynomials is 1 less than the number of vertices 27) -Basic geometric elements& forms used in engineering design -all 2D drawings are composed of simple entities -points,lines,arcs,circles,ellipses,curves28) wcs- Stationary or reference system lcs- moving system that can be positioned anywhere32) -Blending functions used to combine the polynomial curves can vary over the range of the curve -Order of polynomial is independent of number of vertices 33) min clearance or max interference between parts 34) -Mirror -Most of the constraints can't be set independent of the parent feature -Design intent: keep the child a mirror of its parent -Linear array -Radial array35) sum of all piece tolerances 36) -Child feature is dependent on the existence of the parent feature -Describes how one feature is derived from another 37) •Name & address of the company etc Name & address of the company, etc. • Title of the drawing Dibrawing number • Names and dates of drafters, etc. • Approval blocks, etc. •Standards and codes used Standards and codes used • Estimated weight, etc. 38) -Doesn't have to be dimension accurate -Represents the total number of sides, the basic shape of the element, the order the elements are connected. -Basic geometric relationship between the elements ( parallel, Tangent, etc.)
 

 

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