WEBVTT 00:00:00.036 --> 00:00:04.016 A:middle >> This is a tutorial for doing the first lab. 00:00:04.926 --> 00:00:09.906 A:middle This is shown in the figure here, the drawing of a car 00:00:10.726 --> 00:00:14.436 A:middle that we're going to draw using AutoCAD. 00:00:15.696 --> 00:00:19.806 A:middle We're going to start with a new file. 00:00:21.206 --> 00:00:23.356 A:middle Key new. OK. 00:00:24.136 --> 00:00:28.076 A:middle And we're going to select "Open with a template imperial." 00:00:28.076 --> 00:00:30.566 A:middle Imperial means that the drawings will be in inches. 00:00:32.066 --> 00:00:37.816 A:middle And then we start with -- I'm going to turn on the grid 00:00:39.856 --> 00:00:43.066 A:middle to help us -- aid us in our drawing. 00:00:43.066 --> 00:00:46.206 A:middle I'm going to start with the circle command 00:00:47.296 --> 00:00:50.246 A:middle and then enter the coordinates of the center 00:00:50.386 --> 00:00:51.756 A:middle of the circle, zero, zero. 00:00:52.496 --> 00:00:56.766 A:middle And we use 1.25 for the front wheel. 00:00:57.616 --> 00:01:00.216 A:middle And the inner circle, I'm going 00:01:00.476 --> 00:01:02.686 A:middle to repeat circle command again 00:01:03.316 --> 00:01:08.796 A:middle with a center zero, zero and a radius of 1 this time. 00:01:09.956 --> 00:01:12.646 A:middle Then I'm going to create the back wheels. 00:01:13.396 --> 00:01:15.946 A:middle The center of the circle will be at 11, zero. 00:01:16.976 --> 00:01:19.236 A:middle And a radius, again, of 1.25. 00:01:19.636 --> 00:01:25.376 A:middle And then the inner circle, you keep the circle command at 11, 00:01:25.376 --> 00:01:30.556 A:middle zero center, again, and a radius of 1. 00:01:30.556 --> 00:01:34.386 A:middle Now, you can use your scroll from your mouse 00:01:34.386 --> 00:01:37.776 A:middle to zoom in and zoom out. 00:01:37.776 --> 00:01:40.856 A:middle And then if you hold the scroll bar and then move your mouse, 00:01:41.226 --> 00:01:43.766 A:middle you can pan the drawing to a position, 00:01:45.036 --> 00:01:47.036 A:middle any way you want, anywhere you want. 00:01:47.796 --> 00:01:52.446 A:middle Now we're going to create the body of the car 00:01:52.446 --> 00:01:53.946 A:middle by using the line command. 00:01:54.986 --> 00:01:56.896 A:middle OK. I'm going to start. 00:01:57.226 --> 00:02:01.726 A:middle The starting point would be 91.25 comma zero. 00:02:01.726 --> 00:02:07.586 A:middle That would be the left quadrant of the front wheels. 00:02:08.536 --> 00:02:12.486 A:middle And then the next point will be minus 4.25 comma zero. 00:02:13.006 --> 00:02:15.986 A:middle Just move my line to the left. 00:02:16.346 --> 00:02:18.566 A:middle And then the next one, for the vertical one, 00:02:18.566 --> 00:02:22.546 A:middle we're going to use what's called a relative coordinate system. 00:02:22.906 --> 00:02:25.616 A:middle If you put at in front of it, 00:02:25.616 --> 00:02:28.616 A:middle that means the coordinates are relative to the previous point. 00:02:28.976 --> 00:02:33.296 A:middle So zero, it doesn't move along x. And 1.5 moves it up. 00:02:34.006 --> 00:02:37.556 A:middle And then I'm going to continue using the relative coordinate 00:02:37.556 --> 00:02:42.206 A:middle system at 7 and 1. 00:02:42.446 --> 00:02:45.136 A:middle And then, again, relative 00:02:45.136 --> 00:02:48.836 A:middle to the previous one it's 3, at 3 comma 2. 00:02:49.066 --> 00:02:55.276 A:middle And relative to the previous one would be at 7.5 comma zero. 00:02:55.276 --> 00:02:57.216 A:middle I keep putting at so that I don't have 00:02:57.246 --> 00:03:00.506 A:middle to compute the coordinates relative to actual origin, 00:03:00.576 --> 00:03:02.626 A:middle it is relative to where I was previously. 00:03:03.176 --> 00:03:05.426 A:middle And then I'm going to move to the right and down. 00:03:05.426 --> 00:03:08.656 A:middle So to the right by 2 and down by 2.5 00:03:08.746 --> 00:03:12.026 A:middle so positive 2 comma minus 2.5. 00:03:12.026 --> 00:03:18.246 A:middle And then down, so it is at, again, zero comma minus 2. 00:03:18.496 --> 00:03:19.556 A:middle So don't forget about that. 00:03:21.396 --> 00:03:24.636 A:middle And then, finally, I'm going to move to the left 00:03:24.636 --> 00:03:26.856 A:middle by using a polar coordinate. 00:03:27.366 --> 00:03:29.376 A:middle I'm moving to the left at 3 at an angle 00:03:29.376 --> 00:03:33.836 A:middle of 180; it's the negative x-axis. 00:03:34.646 --> 00:03:39.016 A:middle But to add the last remaining line at the bottom of the car, 00:03:39.016 --> 00:03:44.286 A:middle we're going to use the snap, function snap, 00:03:44.286 --> 00:03:45.866 A:middle and the object track command. 00:03:45.866 --> 00:03:47.556 A:middle Make sure that those two are on. 00:03:47.826 --> 00:03:49.326 A:middle And then I'm going to create the line. 00:03:49.596 --> 00:03:56.116 A:middle OK. I'm going to just hover the cursor on the origin 00:03:56.176 --> 00:03:59.756 A:middle and then move it slightly to the right until I see intersection 00:03:59.836 --> 00:04:05.366 A:middle with the actual point and then I will try 00:04:05.366 --> 00:04:07.316 A:middle to do the same thing on the right side. 00:04:08.066 --> 00:04:11.966 A:middle Just hover to the center of the circles 00:04:11.966 --> 00:04:13.766 A:middle and then try to find intersection. 00:04:13.766 --> 00:04:14.826 A:middle I'm having problems. 00:04:15.326 --> 00:04:18.756 A:middle Sometimes this -- it doesn't work very well. 00:04:19.466 --> 00:04:22.246 A:middle I can't find intersection between the left quadrant 00:04:22.246 --> 00:04:24.836 A:middle of the while and the horizontal line 00:04:25.486 --> 00:04:27.886 A:middle so I'm going to keep trying. 00:04:28.456 --> 00:04:32.116 A:middle If this doesn't work, you can just give the coordinates. 00:04:32.216 --> 00:04:34.636 A:middle However, let me try some more. 00:04:35.546 --> 00:04:38.836 A:middle I'm going to zoom in, which is hopefully OK. 00:04:38.836 --> 00:04:41.116 A:middle So let me find the center of the circle, 00:04:41.116 --> 00:04:42.746 A:middle the radius, and then there we go. 00:04:42.746 --> 00:04:43.866 A:middle I found the intersection. 00:04:44.016 --> 00:04:49.146 A:middle Finally, that took me a while. 00:04:49.146 --> 00:04:52.306 A:middle I finished the line command 00:04:52.306 --> 00:04:55.346 A:middle and then used the scroll bar to zoom out. 00:04:56.156 --> 00:04:58.876 A:middle The next thing we're going to do is I'm going 00:04:58.876 --> 00:05:02.996 A:middle to show you the window command. 00:05:02.996 --> 00:05:04.346 A:middle So you want to make sure 00:05:04.376 --> 00:05:07.286 A:middle that the navigation on the right is on. 00:05:07.286 --> 00:05:13.906 A:middle If it's not, you can go to view and then make sure that it's on. 00:05:13.976 --> 00:05:16.696 A:middle And under here, currently it's zoom expanse. 00:05:16.696 --> 00:05:20.336 A:middle You can use zoom window to create a window around it. 00:05:20.936 --> 00:05:22.476 A:middle Click on the left side of the window, 00:05:22.476 --> 00:05:23.816 A:middle lower left side of the window. 00:05:23.956 --> 00:05:25.906 A:middle Click on it. 00:05:26.286 --> 00:05:29.066 A:middle It just creates a window around it without changing -- 00:05:29.946 --> 00:05:32.276 A:middle you are just zooming it without changing the picture. 00:05:32.276 --> 00:05:35.506 A:middle And then click on the up right end corner of the window. 00:05:35.506 --> 00:05:36.886 A:middle So we're zoomed in now. 00:05:37.596 --> 00:05:40.566 A:middle We are ready to add dimensions. 00:05:42.036 --> 00:05:48.286 A:middle To do this, click on the annotate tab and then click 00:05:48.286 --> 00:05:51.706 A:middle on dimension style manager. 00:05:52.936 --> 00:05:58.566 A:middle Click here on this arrow and then click on modify. 00:05:58.566 --> 00:06:02.016 A:middle And under modify, click on the primary units tab 00:06:02.276 --> 00:06:06.716 A:middle and then make sure that you're only displaying 2 decimal places 00:06:06.766 --> 00:06:08.526 A:middle for the dimensions. 00:06:08.526 --> 00:06:11.366 A:middle And then, once you have changed the settings, 00:06:11.976 --> 00:06:14.976 A:middle close the dimensions style manager. 00:06:20.406 --> 00:06:22.516 A:middle Now we're add dimensions. 00:06:24.176 --> 00:06:27.956 A:middle Just click on dimensions, linear dimensions. 00:06:33.146 --> 00:06:36.686 A:middle And then we're going to start on the left. 00:06:36.776 --> 00:06:40.576 A:middle OK. Click on the first end point of the line to the second. 00:06:41.066 --> 00:06:44.026 A:middle And then if you want to position it relative to the line, 00:06:44.626 --> 00:06:48.416 A:middle you can turn on the snap command so that your position will be 00:06:48.416 --> 00:06:51.346 A:middle in an exact position and in the gridlines. 00:06:52.136 --> 00:06:58.326 A:middle Then continue doing this to the next set of locations. 00:07:00.516 --> 00:07:03.976 A:middle And another linear dimension. 00:07:10.666 --> 00:07:14.466 A:middle Just on the horizontal dimension between those two points. 00:07:15.636 --> 00:07:16.176 A:middle Position it up here. 00:07:16.176 --> 00:07:20.906 A:middle Continuing on. 00:07:30.106 --> 00:07:32.796 A:middle And another set here. 00:07:32.846 --> 00:07:38.196 A:middle One more horizontal dimension here. 00:07:38.196 --> 00:07:45.466 A:middle Then we're going to fill in the dimension on the right side 00:07:45.466 --> 00:07:49.396 A:middle with vertical between these two points. 00:07:50.266 --> 00:07:51.876 A:middle Position it somewhere here. 00:07:53.136 --> 00:07:55.016 A:middle One more vertical dimension. 00:07:56.356 --> 00:08:01.766 A:middle I line up and then going back to horizontal dimension. 00:08:02.226 --> 00:08:05.886 A:middle So this point to the center of the back while. 00:08:05.886 --> 00:08:07.806 A:middle Just position it somewhere here. 00:08:08.386 --> 00:08:14.106 A:middle And then between the centers of the circles. 00:08:16.336 --> 00:08:17.496 A:middle Align the position. 00:08:17.496 --> 00:08:20.506 A:middle And then, finally, the last dimension 00:08:20.506 --> 00:08:25.356 A:middle from this origin, the front of the car. 00:08:25.506 --> 00:08:26.756 A:middle And we're done. 00:08:32.416 --> 00:08:40.416 A:middle Then we will add diameter dimensions 00:08:40.416 --> 00:08:43.776 A:middle for the outer circle here. 00:08:43.776 --> 00:08:48.476 A:middle I'm going to turn off the snap so I can go 00:08:48.826 --> 00:08:50.276 A:middle to specific locations of the circle. 00:08:50.276 --> 00:08:51.126 A:middle It's easier. 00:08:52.326 --> 00:08:54.726 A:middle And another one here. 00:08:55.656 --> 00:08:59.976 A:middle Circle. And I am done.