Preparation of Knowledge

In the avatar, if there is no special explanation, it is in millimeters.

Smoothness determination: Tool/option/display/arc and circle smoothness is set to 20000. Note: This is the maximum value.

Right-click function cancel: The shortcut menu does not appear in Tools/Options/User System Configuration/Drawing Area.

Password Settings: Tools/Options/Open and Save/Security Options below.

Object Capture Settings: Tools / Sketch Settings / Object Capture - All Selections.

UCS icon visibility: View / Display / UCS icon / (On / Off).

Relative coordinates: Use the @ symbol.

Relative Cartesian format: @x variable, Y variable.

Relative polar format: @length<angle.

The angle is measured from the positive horizontal direction:

The horizontal direction is "0" degrees, counterclockwise is positive, clockwise is negative.

There are two types of sizes: shape ruler and positioning ruler.

When drawing a line, press U for undo step, C to close, or use CTRL+Z to go back to the last operation.

Enable object capture shortcuts (F3).

Orthogonal mode shortcut (F8).

The F2 key switches between the command line window and the drawing window.

AutoCAD has no specific requirements for color.

Choose three common methods:

1) Drag the window selection from left to right, you must frame to select.

2) Drag the window selection from right to left, you can select if you touch the object, and you can also select within it.

3) Click.

In the operation of AutoCAD, generally, the right mouse button is equivalent to the Enter key.

After the operation is completed, press the right button again to repeat the last operation.

Three-button mouse: the middle button scrolls outward to zoom in and inward to zoom out.

Plane Part One

[Two columns of toolbars, except text, tiles, multi-line]

Toolbar operation: Drawing toolbar (equivalent to the drawing menu)

Straight line (L): full name (line)

Specify two points on the screen to draw a straight line. Relative coordinates

Or when the orthogonal mode is on, directly drag the actual distance to control the direction.

Construction line (XL): full name (xline)

H is horizontal, V is vertical, O is offset, A is angle, B is an equal angle.

Polyline (PL): full name (pline)

First specify a point on the screen and then have the corresponding prompt:

Specify the next point or [Arc (A) / Half Width (H) / Length (L) / Abandon (U) / Width (W)]. Can be set as needed.

The "circle" specifies the width to draw any angle arc; "half width" refers to the half width of the polyline, that is, if the height of the line is 10, then 5; "length" gives the corresponding value, then draw the corresponding length Polyline; "abandon" means giving up one operation; "width" means the width of the polyline

Polygon (pol): full name (polygon)

The drawn polygon is a regular polygon, and the number of edges can be set by itself.

E: Draw a polygon according to the edge. You can also use the outer and inner joins to draw a regular polygon according to the radius of the circle.

Rectangular (REC): full name (rectang)

The following tips appear after clicking the Rectangle tool:

Specify the first corner point or [Chamfer (C) / Elevation (E) / Fillet (F) / Thickness (T) / Width (W)]

The "chamfering" is to cut off the two sides of the 90 degree right angle. Become a bevel. "Elevation" is the meaning of space can be displayed in three views, the elevation is relative; "rounded": that is, the four right-angled sides are rounded into a radius of X; "thickness": the meaning of space The "width" can be expressed on the Z axis: the concept of a flat space, which refers to the width of the four sides of the rectangle.

Arc (ARC or A): The default is to draw a circle with 3 points, the direction of the arc is counterclockwise, and the radius of the arc is given to a negative value. The following options are available in the drawing menu:

Starting point, center of the circle, end point;

Starting point, center, angle;

Starting point, center, length;

Starting point, end point, angle;

Starting point, end point, direction;

Starting point, end point, radius;

Center, starting point, end point;

Center of the circle, starting point, angle;

Center of the circle, starting point, length;

Circle (C) full name (circle)

The default is the circle radius [diameter] to draw a circle. There are options in the drawing menu: two points, three points, cutting radius, and cutting the circle.

Cloud line (revcloud) is used for marking (not important)

Spline curve (SPL) full name: (pline)

After confirming each point with the left button, three carriage returns: the first break, the second start tangent direction, the third end tangent direction

Ellipse (EL) full name (ellipse)

uncommonly used. Give the total length of the long axis first, then give half of the short axis. Or draw in the center: half each of the long and short axes.

Ellipse arcs are not commonly used. Used to draw elliptical arcs

Point (P) full name (point)

The point tool can't press the right button to confirm the exit. To exit, you can only press the ESC button. There are the following drawing operations:

Format: dot style

The size of the point is 10% relative to the ratio of the screen.

The icon outside is equivalent to multiple points. During operation, press ESC to exit.

Single point: in the drawing menu, click on a point to exit

Fixed-point aliquot (DIV) of points: divides an object into N equal parts by point

Pointwise equidistance (ME) of points: Mark an object by a long distance

For the division of the closed path, the N equal division is N points; the open path is equally divided, and the N is divided into N-1 points.

Note: The operation of the point is different from the operation of other tools. Repeat the last operation after exiting to return to the last time you want, unlike other drawing tools that have a joint menu.

Pattern fill (BH) full name (bhatch)

Must be a closed object to fill

At the beginning of AR, there are more buildings.

ANSI American National Standard

ISO International Standards Organization standard

Be sure to preview the ESC or right click to return

Edit hatch: Modify II: second icon

After the profile is filled, the characteristic can be matched to MA without decomposition.

Do not break the fill pattern as much as possible for editing

Three advanced settings for pattern fill:

External meaning, which area to click, which area to fill

Note: Ignore padding, ignore it inside, and calculate it inward.

Area (REG) full name (region)

Premise: End-to-end closed body Introducing the concept of point line body

Converts a closed object that is connected end to end from a wireframe to a face, enabling line-to-face conversion. The first time will be a bit slow

Extension to Boolean operations: Call up entity editing, three forms of Boolean operations: union, difference, intersection, only the area can be Boolean

Modify the toolbar:

Delete (E) full name (erase)

Used to delete the object, click delete to enter ALL on the command line to delete the drawing area so the object; the default is to delete the selected object

Copy (CO) full name (copy)

Used to copy objects, the default is to copy selected objects; specify the base point to move the copied objects to another location. Can be moved to the actual size: three cases, only one copy, multiple repeat copy, distance copy, relative coordinate copy

Mirror (MI) full name (mirror)

Used to copy an object that is symmetrical with the source object. By default, two lines are specified to define a mirror line. Features: the corresponding points are vertically divided

Mirrtext (mirror variable control command): give 1 full mirror, give 0 graphics image, text is not mirrored

Offset (O) full name (offset)

To achieve the offset of the object, first offset the size, and then press the right button to exit after the offset is completed.

Array (AR) full name (array) key content

An array of objects is implemented, which has a rectangular array and a circular array; in the form of a dialog box:

Rectangular array: set n rows and m columns, and then give the row offset value and column offset value, divided into four quadrants

Ring array: First determine three elements: center point, total number of items, fill angle, there are three options

Mobile (M) full name (move)

Realize the movement of the object, can operate on the actual size

Extension to grip control

Rotation (RO) full name (rotate)

Realize the rotation of the object, refer to rotation and free rotation; orthogonal open is calculated by 90 degrees,

Scale (SC) full scale (scale)

Realize the scaling of the object, the default is scaling, the application of the object properties changes, the application of the R reference

Stretch (S) full name (stretch)

Must be selected from right to left, and only local can be selected. Selecting a point will operate on one point. Selecting two points will operate on two points. Selecting all points is equivalent to moving the tool. Divided into accurate stretching and random stretching, reference stretching

Trim (TR) full name (trim)

Used to trim the object, the operation method, click the trimming tool and press the right button to confirm. Then use the left button to trim, skill operation: (one-time trim) point trim, select the dividing line, confirm, input F, then select two points, propose a straight line, be selected, all trimmed

Independent segments cannot be trimmed

Space Trim: Select Trim, right click, input P (projection) has two options, N, must be true intersect, U projection to XY plane trim, V current view projection trim.

Extension (EX) full name (extend)

Used to extend an object, first select the extended boundary, confirm and select the extended object.

Break at the point (BR) full name (break)

Interrupt an object at a point, use the left button to select the object and then use the left button to point to the object. The point in the point will be used as a break point, inaccurate, basically no application.

Interrupt (BR) full name (break)

Interrupt an object, interrupted at two points, inaccurate, basically no application

Chamfer (CHA) full name (chamfer)

Remove the two sides of the object by a distance; have the following tips:

("Trimming" mode) Current chamfer distance 1 = 0.0000, distance 2 = 0.0000

Select the first line or [polyline (P) / distance (D) / angle (A) / trim (T) / mode (M) / multiple (U)]

The "polyline" refers to an operation on an entire object, such as a rectangle, which can be used to dump four sides at a time;

"Distance" sets the distance of the chamfer, the first side and the second side; "Angle" sets the chamfer by the angle; "Pruning" determines the chamfering mode, whether to trim; "Method" determines the chamfer Way, whether it is inverted or angled; "multiple" can be used if there are multiple identical chamfers

Rounding (F) full name (fillet)

Pour the angle formed by the two sides of the object into a rounded corner with the following tips:

Current setting: Mode = Trim, Radius = 0.0000

Select the first object or [polyline (P) / radius (R) / trim (T) / multiple (U)]

"Multi-line" refers to the operation of an overall object, such as a rectangle, which can be inverted at four times; "radius" sets the radius of the rounded corner; "trim" sets the rounding mode; Can be used when there are multiple identical roundings

Decomposition (X) full name (explode)

Decompose a whole object into a plurality of independent objects, that is, decompose into lines; if the body is to be decomposed into lines, it is decomposed twice, that is, the body is decomposed into faces and then decomposed into lines by faces.

Plane part two

Template file creation (DWT file) saves after setting the drawing environment

How AUTOCAD graphics are made into images: file/output Optional .wmf/ .bmp

The 2002 version must turn the background into white. There is no need to change the background color after 2004.

Text:

Single line: DT, you must press Enter when you enter a single line. In this case, the right button cannot be equivalent to Enter.

Multiple lines: T or MT (new toolbar)

Font selection:

Chinese characters: Song style, imitation Song body default font (txt) is generally not commonly used

It is recommended to use the simplex.shx font for standard text (simplex.shx does not recognize Chinese characters, txt.shx does not recognize)

Engineering text: Select the simplex.shx font to select, tick the large font, select gbcbig.shx font to lose Chinese characters and numbers.

Input for five special symbols:

Diameter symbol (%%C), plus or minus sign (%%P), degree (%%D), %%u<content>%%u underlined, %%O<content>%%O

With a line, you can add both underline and underline

Text overlay:

The text should be tilted 30 degrees

When facing, the right side is tilted to the right, upper and left, tilted to the left

When you type again, the last text you entered last time will be selected, you can ignore it.

Tile: (B, W) full name (block and WBLOCK)

First, the block production

1), the icon on the toolbar is equivalent to the input B. The tile created in this way only exists in the current file, and the replacement between the tiles cannot be realized. It can be called by the design center CTRL+2.

2), W to make a tile, this tile can be placed in a specified directory, can be easily called, and can achieve mutual replacement of tiles

Second, the insertion of the tile:

1), insert --- block, browse, find the tile name

2), minsert can achieve array insertion of tiles

Third, the replacement of the block, the operation steps:

1), enter -i at the command line, enter

2), replaced tile name = replaced tile name, enter

3), enter Y, enter, that is, confirm the tile redefinition, achieve replacement

4) Press the ESC key to cancel the insertion of the tile and only implement the tile replacement.

Fourth, the definition of attributes:

The attribute is the information attached to the tile. It must be combined with the tile to implement its own function. When the tile is inserted, the prompt information is input.

Attachment: Determine the replacement path of the tile, determine the search path of the tool/option/file/support project file after determining the directory where the tile is placed, and click “Add” to find the directory where the tile is stored. Block replacement can only be achieved if the search directory meets the requirements.

The definition of the tile attribute:

Drawing - block - defining properties

Edit properties (for text operations that define properties)

If you specify a point on the screen, the entry of the attribute is displayed by the command's equation. If it is inserted at the origin, it will be prompted in the form of a dialog box.

Tile example:

Supplementary note: If you want to use the backup file if you want to use the backup file, you can directly rename the backup file to .dwg.

Multi-line (ml) multi-line editing (mledit)

Architectural drawings are generally divided into two categories: architectural construction drawings, interior decoration drawings

Multi-line icon loading: right click on any floating toolbar - toolbar - custom - command - drawing - multi-line

Multi-line width control, the default width is 1. Because N times of 1 is N.

The number of lines in a multi-line can be changed: Format - Multi-line styles When building an architectural drawing, the multi-line is generally set to three.

Multi-line proportional control - for the thickness of the wall. The general ratio is: 120 240 360 480 and so on.

There is an alignment setting when drawing multiple lines: there are three alignments - up, down, and none. Select "None" during the drawing process. The mouse is aligned in the middle. Up and down are generally not used.

Multi-line cannot be trimmed without blasting. (Note: you will not be able to recover after the explosion!)

The middle line can be deleted after the building wall painting is completely completed. Use: Tools - Quick Selection - Color Selection

If you can't choose by color. Two reasons. First: the color code is not correct. Second: multiple lines are not broken down.

The size of the doors and windows in the building: windows generally have 1.5X1.2X0.12 and so on. The door generally has 0.04X0.9X2.0, unit: m)

There is also a drawing of architectural drawings - if all the size of your house is to go to the home with a ruler. Then draw the interior wall first. Then use the offset to do it.

Layer application: (mainly assigning objects)

Layers are turned on and off: all layers can be turned on or off; layers are not displayed, not drawn, but participate in calculations.

Layer freeze: The current layer cannot be frozen, and other layers can be frozen.

Locking the layer: The locked layer cannot delete the object, but you can draw the graphic into it.

Graphics that have not been modified can change as the layer transitions.

Objects in the layer cannot be deleted. To delete, you must delete the content in the layer before deleting it.

0 layer cannot be deleted, and the defined point layer cannot be deleted. The current layer cannot be deleted.

Layer classification:

Building: floor plan, furniture, signage, each room

Machinery: dotted lines, dotted lines, graphics, labels

In general, the settings of the layer:

Drawing, text, dotted lines, dashes, frames, labels

Note: Single line loading: dotted lines indicate invisible lines, dotted lines indicate symmetrical lines, adjustment of line type ratio

Note: If you want to select all objects of a layer: Tools - Quick Selection - Layer

Title bar Small 110 big 180

Line spacing is 7 or 8 mm

Title bar content: design, drawing, review, approval, standardization, map name, scale, map number, frame, view, etc.

Use of some accessibility features in AutoCAD:

Query function:

Area calculation: If there are multiple lines, you must first make one with the boundary. Then calculate again.

The calculation of the first rule graphic area: tool - query - area and then find one point at a time.

Calculation of the second irregular graphic area: tool - query - area and then enter "O"

Calculation of area increase reduction: first calculate by adding mode, then use subtraction mode to calculate.

Distance: Only the distance of the straight line segment.

Calculation of the distance of the arc: Available features to see the arc length. Another is "query" --- "list display".

Note: Handle: is a code given inside the computer, not the same.

Representation of the label of the arc length: in general, artificially add an arc to the label

Mass calculation: The characteristics of the area or mass, calculated in milligrams. The default density is calculated as the density of water

CAL: Calculator

Point coordinates: (absolute coordinates can be viewed with object properties)

Time: can query the time of opening the file

Auto save: Tools - Options - Open and Save Command: savetime

The use of the PE command (open path) becomes the overall format: PE selects the object right J [closed path becomes the whole]

Three methods: PE, area, boundary

Passwords can be added to AutoCAD: security options, status, and many items are listed.

Fill (system variable for filling display) can be input: ON, OFF.

Re (refresh screen)

When the file is opened, there is no dialog box when the system variable (filedia) of the dialog box is displayed to "0", and a dialog box is given when "1" is given.

Sketch [hands-free line (meaning of sketch)]

Parity padding of Solid graphics: odd points are connected to odd points. Even points are connected to even points (no use)

Trace equal width line (less applications)

Ray ray donut ring

Abbreviation for ltscale linear proportion (control of overall linear scale)

Mid midpoint capture, CEN center capture tan point capture, etc.

Hyperlink CTRL+K application. Insert - Hyperlink hyperlinks can be copied. Open the context menu when using a hyperlink.

Labeling: Labeling is an important part of a flat graphic. [with annotation toolbar]

Line type annotation: The default is to find the first point and then find the second point. You can click the right mouse button once to appear a small square and you can easily mark it. The marked data is the variable of X and the variable of Y.

Alignment: The distance marked is the true size.

Coordinates: Turn on the orthogonal function when making coordinate labels. The coordinate value marked in the horizontal direction is the coordinate value of the Y axis (absolute coordinate value). The coordinate value marked vertically is the coordinate value of X (absolute coordinate value)

Note: The origin of the coordinate system can be freely changed.

Radius, diameter: used to mark the radius and smuggling of the arc and arc.

Arc: The most used is the radius dimension. Circle: Available radius or diameter. casual.

Angle: An infinitely long line cannot be angled.

Baseline labeling: It must be marked with one label; the left point of the first label is based on the left and the right side of the first label is based on the right.

Continuous labeling: There must also be a prerequisite. Then there is a one-to-back mark.

Lead: A line that is easy to label. The movement of the dimension text to be done by the leader does not affect the leader. After drawing the lead, press the Esc key.

Tolerance: The amount of tolerance can be given according to actual experience or by checking the manual. Geometrical tolerances: (shape, position tolerance) (Note: tolerances are specifically described in the book. You can buy the materials yourself to see) The tolerances cannot be decomposed. Belongs to an external reference class. If you want to modify the available edit text to modify.

Center mark: Add a mark to the center of the circle. The default size is 2.5 mm.