Computer Aided Drafting And Design Lab-1 PDF

Activity No. 1 COORDINATE SYSTEM Course Code: CE 403A Program: Course Title: COMPUTER AIDED DRAFTING Date Performed: Section: Date Submitted: Name :...

Activity No. 1 COORDINATE SYSTEM Course Code: CE 403A Program: Course Title: COMPUTER AIDED DRAFTING Date Performed: Section: Date Submitted: Name : Instructor: Engr. John Paulo Fernando 1. Objective(s): The activity aims to create an object using different coordinate system. This experiment also provides students’ knowledge and skills on command manipulation using different coordinate system and input techniques. 2. Intended Learning Outcomes (ILOs): The students shall be able to: 2.1 Create an electronic drawing template. 2.2 Design an object using different AutoCAD input techniques. 3. Discussion: Limits – an AutoCAD command that will allow the user to set a limitation of what will be there prescribe paper reference. As shown in Figure 1.1 after the execution of the command the AutoCAD feedback will ask the user on what will be the lower left corner and the upper right corner set-up. Fig. 1.1 Command bar for setting the lower left corner Units – it is an AutoCAD command that will allow the user to change the length type, precision (number of decimal point), Angle references and the most important measurement setting. Figure 1.2 shows the actual drawing units window for user reference. Fig. 1.2 Drawing Units properties Grids and Snap Spacing – An AutoCAD command that will set the distance of the grid and snap spacing. 13 This command is useful in case that the object is having a uniform distance. Figure 1.3 shows the image that will be seen at the model are and the icon counterpart. Figure 1.3 Coordinate system – it is an AutoCAD setting on how the user will do their inputs upon creating a certain object. Table 1-1 shows the different coordinate system that AutoCAD implement. Table 1-1. AutoCAD Coordinate System Coordinate Description Command Format System Absolute Focuses in x,y values for 2D objects. x,y (values) Coordinates Relative An AutoCAD input focus on the Coordinate different quadrant signs. This input technique uses a “@” symbol that will reset the point of origin after the @x,y (values) execution. The recent coordinate value will be the new point of origin upon the next point of input. Polar The same as the relative coordinate but Coordinate with this command the focus of the user @distance