Have you ever worked with AutoCAD and needed to use calculator came up but have to go out to open more programs interrupt the running time.
This is not difficult, just type a short command (hotkey) QC into the command line, it will open the Quick Calculator tool, or a calculator as shown in the picture, can be used without exiting the program.
Working in 3D with AutoCAD has its own uniqueness. Because the program starts working in a 2D viewpoint from the top (Top view), i.e., only sees only 2 axes of work, namely X and Y from looking down at the workpiece.
Therefore, if you want to work in 3D with AutoCAD, you will need to change the default view to the view showing the Z axis. making it inconvenient to use in addition, to really work We tend to use repeated angles.
The program therefore increases convenience by adding a tool, the Views group, to meet the needs and increase the speed of work as shown in the Figure 1.
Tool details, this group of Views, the first part will be a 2D view in various aspects consisting of Top, Bottom, Left, Right, Front, Back.
Followed by a 3D Isometric Projection or a technical 3D image that can measure the width, length, height, like a 2D image, consisting of
SW Isometric / SE Isometric / NE Isometric / NW Isometric
You may be wondering, right? Isometric abbreviation for each view? what does it mean Let’s see the description.
Four directions of view
In order for us to communicate with others about the direction of looking at any object, we must find references to be used to achieve the same understanding first, for example, we tell people to look to the right. Everyone will understand the same. And turn to look in their own right direction at the same time, saying that we are looking at a 3D object, therefore referring to what people have the same understanding that is the direction itself.
Suppose we place the workpiece and look down from the top plane. (Top view) indicating the direction will be as shown in Figure 2.
That means that the Isometric abbreviation is the name of each direction that is a 45 degree diagonal view toward the workpiece. I tried to create a 3D part, then go to the Views group tool and select each view to start with.
SE Isometric
SW Isometric
NE Isometric
NW Isometric
It was found that the change of perspective works according to this principle. Can make us change perspectives quickly. But it will be an angle that is already set (preset), always at an angle of 45 degrees with the XY plane. There will be other tools to help, which will be discussed in the next chapter.
To know the coordinates (Co-Ordinate) of a point (Point) on Shape 2D or Form 3D, use the command ID (Command:ID).
The steps for using the command are as follows:
For example, there is a 2D Rectangle shape as shown in the Figure 1.
If you want to know the coordinates of the lower left corner. Type the ID command into the command prompt as shown in the Figure 2.
After Enter to execute the command select the desired point. For accuracy use OSNAP (e.g., Endpoint). When you click to select a point, ACAD will display the X, Y, Z coordinates immediately as shown in Figure 3.
In the case of a 2D shape, the Z coordinate value = 0 because there is no height value.
If it is a 3D form, it will use the same command and ACAD will display the required X, Y, Z coordinates.
UCS rotation with the command UCS / 3 point is used when creating a workpiece on an inclined side or an inclined plane that does not know the angle of inclination.
The principle of 3point or 3 points is
Point 1 is the origin point,
Point 2 is the direction point of the X axis.
Point 3 is the direction point of the Y axis.
Click to watch the video.
Arranging workpieces into categories is done with the Array command (Modify command group) as shown in Figure 1.
The Array command has two options:
1. Rectangular > Row and line arrangement
2. Polar > circular arrangement
For now, we’ll talk about the Polar Array, experimenting with circular arrangements. Start by creating Circle (Circle) up 2 pieces as shown in Figure 3.
When selecting the Array command, there will be options as shown in Figure 4.
Follow these steps:
1. Select the Polar Array first.
2. Click on the Select Objects heading, then return to select the object you want to arrange.
3. Set the center point in the arrangement (Center point), select the Center of the large circle.
4. Come to the topic Total number of items to enter the desired amount.
5. Set the angle to fill in the arrangement (Angle to fill), in this case put 360 means that the arrangement is within 360 degrees or equal to 1 around the circle.
When enter, you will get output as shown in Figure 5.
It is a command that is used very often. There is also an Array / Rectangular option. and will be presented later.
The Slice command is used to slice 3D Solids into sections along a specified plane. It is a command that allows us to perform complex tasks and show job details.
Let’s see how this Slice command works. Start by creating Solids as shown in Figure 1, then select the Slice tool in the Solids Editing tool group as shown.
When an order is selected the program will allow us to select the desired piece of work (must be 3D Solids only to continue working), select the work as in Figure 2 (Select objects to slice).
After that, there will be a choice that Specify start point of slicing plane or [Planar object/Surface/Zaxis/View/XY/YZ/ZX/3points] <3points>: as shown in Figure 3
The choice I suggest in this chapter is 3points (or 3 coordinates). I put points 1, 2 and 3 in position. As in the picture, the simple way to think is Let’s say we have a knife. Let’s cut this piece apart into two pieces. I can divide it in many directions. depending on the plane of the blade in this case, I will cut along a plane parallel to the workpiece length. And cut from top to bottom, so points 1 and 2 are vertical cutting planes, while points 2 and 3 are longitudinal cutting planes.
After Enter, the program will ask whether specify a point on desired side or [keep Both sides]: Means we click to select the part of the work to be kept (delete the other part) or to keep both. If we select Both (both) will get the work as shown in Figure 4
You can see that the work piece is divided into pieces 1 and 2, but still in the same position. can be separated by using the move command as shown in Figure 5
With work that is Solids can be used further In addition, slices can be done in multiple planes. I try to make slice plane or Slice plane to increase understanding, create Solids and try to use slice command.
(Multiple)Point or Point is a command in the Draw group.
I think that there are quite a few people who are curious about this command. What is it used for? If you use point to create workpieces, it may not be suitable. because the work would come out as a line drawn by a point And no one does that. So what is the benefit of this command? Point here refers to the reference point itself. Creating a reference point is what we do when we want to divide the workpiece into parts, for example, with one straight line. Want to divide into 3 equal parts.
The dividing point is to use the point as a reference point. Therefore, Point can be used as a reference. Must have a face that is more noticeable than normal spots We have to change the point style or Point Style to change from the normal way. The command used to change Point Style is DDPTYPE. Found that there are many styles to choose from.
It found that there are many styles to choose from. Click on the Point Style box that you want to use.
Now let’s draw a horizontal straight line. any length Then select the Divide command as shown.
Object to divide selects a straight line. Then enter the value Number of segments as 4 (meaning divided into 4 parts).
The result is as shown in the figure: the line is divided into 4 sections, referenced by points in the selected style as shown.
Therefore, the Point command is the command to create a reference point. Using in conjunction with other commands, Point Style can be set by using the DDPTYPE command.
Solids parts in ACAD 3D have a specific group of modifier commands. Now we will discuss how to use the Subtract command in the Solids Editing tool position group (in CAD 2010) as shown.
From the figure, it can be seen that in the process of subtracting or cutting the part of the workpiece, there must always be
1. the main workpiece to be kept and 2. the workpiece to be cut out, and the important thing is that these two parts must actually intersect is that there are parts of the work that overlap therefore will be able to get the results as desired.
Let’s create 3 solids 3D pieces, one green box and two red boxes, positioned as shown.
Set the Green box to be 1. The main workpiece to be kept. The Red box is 2. The work piece that will be cut out Then select the Subtract command and select the 1st piece first and enter to finish the selection process. Later, select Box 2 (until all 2 workpieces are completed) to be the cutter and then enter the result as shown.
You will see that Box 2 has disappeared, leaving only Box 1 that has been cut to the size of Box 2 that the arrow is pointing at. The principle of subtract is subtraction, that is, there must be an indenter (which must be larger in size) and a subtraction (smaller in size). and there are more than 1 piece) Sure enough, try it.
UCS stands for User Co-ordinate System, meaning user coordinate system (defined by the user).
This term has both meaning and command. UCS is related to WCS (World Co-ordinate System) normal coordinates (AutoCAD uses the word world as normal). If you observe the screen in every work, there will be a sign showing WCS at the bottom left corner of the screen called the WCS Icon as shown.
In the normal state, this icon indicates the 3 axes (axis) in working, namely X, Y and Z, which are arranged at right angles to each other according to Right Hand Rule 1 In the 3D view, the Z axis (blue) is perpendicular to the X, Y axes, meaning that the working plane is the plane that is parallel to XY only as shown.
Or the area shown in red If we want to work in the green or blue plane, we can’t. Because it is a plane that is not parallel to the XY plane (XY plane) because the program requires us to create work in a plane parallel to the XY plane only, so from the figure to create tasks on the green plane The XY plane must be rotated parallel to this green plane before any work can be created on this plane.
To rotate the working plane, use the command UCS to rotate the coordinates in the direction that we (User) want to adjust from the normal position when starting to work. Adjust coordinates from normal (world) to user (user) coordinates for 3D creation.
UCS commands are commands with several options and descriptions. Today I would like to use a convenient and comprehensive method. That is using the alternative UCS / 3-point tool as shown.
Once the order has been selected, set the 3 coordinates as shown in the figure.
By starting at point 1, the origin point, then going to point 2, the end of the X axis, and point 3, the end of the y axis. Then the working plane will change as shown.
Notice that the UCS Icon has an XY plane parallel to the desired (green) area. If a work piece is created, it will be on this plane. Try modeling and rotating the 3-point UCS to change the working plane in different ways to gain insight.
If you have a problem, ask any time in the comments.
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