Slide 1TerminologyConstraintsConstraints cont’dSlide 5Slide 6Slide 7Slide 8Slide 9Resolve SketchPracticeHomeworkDimensionsDimensions cont’dSlide 15Slide 16Slide 17CustomizeSlide 19Slide 20Best Way to StartSKETCHING IN Pro/ENGINEERPart 2TerminologyConstraint: condition defining the geometry of the entity, such as, horizontal, vertical, perpendicular, etc.Weak constraint: shown in gray. Pro/E may delete this constraint at any time without notification.Strong constraint: shown in yellow. Pro/E will notify you that you have given conflicting instructions giving you the power to decide which constraint or dimension you wish to keep.Current constraint: selected constraint, shown in red.ConstraintsWeak constraints are added while you sketch.Constraints cont’dYou want all constraints to be strong. If they are strong they will be displayed in yellow.The smart student will make sure all constraints are yellow.Delete constraint–Select constraint symbol, press Delete keyConstraints cont’dConstraints made strong, disabled, or toggled between while sketching.Hold down the Shift key and right mouse click.Press the tab key to toggle between constraintsDisable constraintSketchRight mouse clickResultLock constraintToggle between constraintsConstraints cont’dAdd constraint after the entity was sketched or make a weak constraint strong.Constraints cont’dAdd constraints after the entity was sketched cont’d.BeforeSelected Vertical:Selected endpointsSelected Horizontal:Selected center of circlesSelected lineConstraints cont’dEqualMidpoint Parallel linesPerpendicularConstraints cont’dTangentConcentricResolve SketchGiven:Lines constrained to be perpendicular and one horizontalCrashed when tried to also make the lines parallel (2 lines can’t be parallel and perpendicular at the same time.Undo or Delete the constraint you wish to remove.PracticeConstraints – all except symmetric–Try different combinations, such as endpoints, centers of circles and arcs, on the line or edge of circle, etc.Add conflicting constraints and resolve themHomeworkComplete Hands-On 16DimensionsWeak dimensions are in gray–Pro/E may change these dimensions at any time without notification.Strong dimensions are in yellow –Pro/E will notify you if there is a conflict. »The value of the dimension may change, but you decide whether to display the dimension or replace it with another dimension or constraint.Dimensions cont’dTo add a strong dimension–Select the Dimension icon–Select entity(ies) – THINK dimensioning rules!–Middle mouse click where dimension is to be placedSelect entitySelect entityPlace dimensionSelect endpoints Place dimensionPlace dimension. Notice extension lines overlap object lines. This will cause more work when cleaning up the drawing file.BetterDimensions cont’dSelect endpoints Place dimensionAfter all dimensions necessary for manufacturing have been made. Gray constraints must be made strong.Dimensions cont’dSingle click for radius (180° or less)–R will not be displayed in sketch mode, but will in drawing fileDouble click for diameter (over 180°)  will not be displayed in sketch mode, but will in drawing fileSingle click. Radius – notice arrowhead.Double click. Diameter – notice arrowhead.Click on the circle or arc.Dimensions cont’dTo move dimensions–Select the Select icon, click and drag dimension to new position, release mouse buttonTo edit dimensions–Select the Select icon, click on dimension and type in new dimensionModify dimensions–Select the Modify Dimension icon –Select dimensions to be modified.–Edit dimensions, select check mark iconCustomizeSelect Sketch > Options > Sketcher Preferences –Parameter: value in Sketcher, such as, grid spacing, etc.PracticeThink dimensioning rules!Add strong dimensions Move dimensions by dragging themEdit dimensions (double click)orModify dimensionsHomeworkComplete Hands-On 18Best Way to StartDraw a circleEdit the dimension to an overall dimension of partDelete the