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Manuals
AutoCAD 2D Modeler:
CHAPTER 3: COMMANDS
Home : Manuals : AutoCAD - Modeler - Commands 

Typing CATS from the AutoCAD command line will initiate the AutoCATS Assembly Tolerance Modeler causing the AutoCATS menu to appear. The menu provides access to all AutoCATS options. The AutoCATS menu appears as below:

AutoCATS



* * * *

       

SETUP

RESET_AC

    

--------

PARTS

JOINTS

FEATURES

SPECS

LOOPS

CATSFILE

DISPLAY

-------- 

      

      

AutoCAD

All menus contain a list of other menus on the same level so that menu changes can be made without returning to the AutoCATS main menu. For example, PARTS may be called from the main menu AutoCATS or the JOINTS, LOOPS, FEATURES, SPECS, or DISPLAY menus. AutoCAD's tools are also available from any menu. For example, if an intersection of two points is needed simply input (intersection of ) and then approximately select the intersection. The user may also zoom, redraw and create lines, etc. One feature in AutoCATS is that zoom, pan, and redraw may all be completed in one step without interrupting the command in progress. A cancel function is also available.

SETUP

Before executing AutoCATS certain parameters must be set. These parameters include text and symbol height, parallelism and icon menus. These parameters are stored so they do not have to be re-entered each AutoCATS session. These parameters may be changed at any time during AutoCATS by selecting SETUP from the main menu bar. A pop-up menu, as shown below, will then appear asking you to specify the parameter which you want to change or modify. SETUP is not regressive so if the user changes the text height, in the middle of an AutoCATS session, there could be two text heights.

PARAMETR
TextSize
PerpPara
IconMnus
Color

If SETUP is not selected before entering the other sub-menus then AutoCATS will automatically default to the SETUP menu, requiring the user to enter the specified parameters. The element colors may also be changed by using setup.

Text Height

Select a text height that is readable and appropriate. Enter the text and symbol size by either selecting two points or by selecting a text height on the pop-up menu as shown below. For example, entering either 0.5 or selecting the points (0.0,0.0) and (0.0,0.5) will set the default text height in AutoCATS as 0.5 units. The AutoCATS symbols will be proportioned as well to the text height.

TEXTSIZE
0.1

0.2

0.3

0.4

0.5

0.75

1

1.5

2

2.5

3

5

Parallelism

This factor tells how close to parallel two lines must be before they are considered parallel or how close to being perpendicular two lines must be before they are considered perpendicular. For example, if two lines are at an angle of 0.001 units apart and the parallel factor is set at 0.01 then the two lines are considered to be the same line. Just as with the text height, the distance may be either typed, selected from the menu (as shown below) or is shown by selecting the distance.

PERPPARA
0.01

0.005

0.001

0.0005

0.0001

0.00005

0.00001

Icon Menus

If "yes" is returned then icon menus will appear for data reference frames, feature datums, joints, feature controls, and design specifications. These menus are very helpful for the beginning AutoCATS user. Each icon depicts an example of the datum, joint, feature control or specification represented. All icon menus appear in Appendix A. Icon menus may have slightly different appearances in different AutoCAD releases.

If "no" is entered then AutoCATS will be completely pop-menu driven. Most menus have a default with the most commonly selected item as the default item. With the defaults, the menu driven method is much faster and recommended for experienced users.

Color

The color option allows you to change the colors of individual model elements. To change the color of an element select the model element from the pop-up menu:

COLOR

Part

Joint

Feature

Spec

Loops

Temp

Highlight

After selecting the element, key the color number or name you want to replace the old color.

Enter element to modify: Part (select or type element name)
Enter new layer color: 2 (Enter the numerical value or string name of the color)


PARTS

To identify individual components or parts in the assembly model and to create data reference frames, PARTS is selected from the AutoCATS main menu. Individual parts must be identified before any other functions are selected. After the first editing session the PARTS menu appears as shown below:

AutoCATS

PARTS

* * * *
NEW_P

DELETE_P
--------

JOINTS

FEATURES

SPECS

LOOPS

CATSFILE

DISPLAY

--------
--------

Zoom In

Zoom Out

Pan

Redraw

Cancel

AutoCAD

New Part

This function prompts the user to identify essential elements of each part in the assembly drawing. Prompted information includes datum reference frames and the part name. Note that an underscore should be used to connect multi-word names since AutoCAD does not allow spaces in names. AutoCATS truncates the name to eight characters if more than eight characters are entered. Another option is to use the default part name. The default part name is numbered according to the part creation sequence.

If a new part's DRF origin will be located as the same point of an existing part, joint, or specification endpoint then a unique AutoCATS construction tool may be used. First select DATUM from the TOOLS + DATUM pop-down menu. Next select the respective DATUM. The origin will then automatically be calculated, possibly avoiding the use of filters.

For example, create the part ROLLER 1:

Command: NEW_P
Enter origin of Datum Reference Frame (DRF): CENter of a circle
Enter a part name (8 char max) <Part_1>: Roller_1
Enter datum reference frame type <Rectangular>: Cylindrical

The circle with its part and DRF identified:

The datum reference frame type will be either rectangular or cylindrical (see Figure 3-1). If the part is a cylinder then cylindrical should be picked, otherwise choose a rectangular DRF type. The DRF also requires an axis definition. The cylindrical DRF's axis is automatically defined. The rectangular DRF requires the user to define the positive x-axis of the part. These axis are required to compute needed joint and loop information.

Figure 3-1. Cylindrical and Rectangular DRF Symbols.

When using the pop-up menu you may type in r,c,rectan, cylind, rectangular or cylindrical (case independent). The feature datum and DRF pop-up menu is shown below:

FeatDatm
Rectangu
Cylindri

The datum icon menu appears as below:

Figure 3-2. Feature Datum Icon Menu.

Once the information has been obtained the DRF is created.

Creating Datum Reference Frame (DRF) ...


Delete Part

In order to delete all the information for a block, including hidden blocks, the user must select "Delete P". By just erasing the part's DRF symbol some of the information is still stored in the program and might cause future problems. After selecting "Delete P", simply select the parts which need to be deleted.

Command: Delete_P
Select part object to delete: (Select desired part's DRF symbol or name)


JOINTS

To begin identifying the contact points between parts select JOINTS from the AutoCATS main menu or directly from the PARTS menu. The information required to define a joint includes a kinematic joint type, a global location, an orientation, the two parts in contact, and the joint's location relative to the datum reference frame (DRF) on each part or the DRF path. The JOINT sub-menu appears as below:

AutoCATS
JOINTS
* * * *

NEW_J
EDIT_J
DELETE_J
DOFcheck
--------
PARTS
FEATURES
SPECS
LOOPS
CATSFILE
DISPLAY
--------

--------
Zoom In
Zoom Out
Pan
Redraw
Cancel
AutoCAD


New Joint

Select NEW_J to begin identifying the contact points between parts. Each contact point and datum reference path back to the DRF should be carefully identified in order to create a kinematically and geometrically correct model. A short example follows:

Command: NEW_J
Select joint location: (Select the point of interface)
Select joint type: (Select the appropriate interface model)

When creating the interface points, six different contact joints may be selected. These six joints or mating conditions are named in the joint pop-up menu. The following chart gives a brief explanation of each joint, the degrees of freedom, as well as how the joints appear in the pop-up menu in parentheses.

JOINT DEFINITION
Rigid
(RIGID)
No rotation, no translation
Revolute
(REVOLU)
A pin joint, may rotate about one axis
Cylindrical
(CYLIND)
Two parallel cylinders, may rotate or translate about one axis

Planar
(PLANAR)

Two planar surfaces may translate with no rotation
Edge Slider
(EDGSLI)
An edge in contact with a planar surface, translation and rotation
Cylindrical Slider
(CYLSLI)
A cylinder in contact with a planar surface, translation and rotation

When using the pop-up menus, type in either the first six characters of each joint, or the complete joint name. The joint icon menu appears as below:

Figure 3-3. Joint Icon Menu.

To accurately represent the interaction between parts each joint must be correctly oriented. All joints, which allow relative part motion about an axis or plane, require information specifying the axis or plane direction. The axis of rotation of a revolute joint is assumed to be normal to the drawing in 2-D modeling and no user inputs are needed to define it.

Select point on joint sliding plane:
Select DRF on first part: (Select the DRF on one of the contact parts)
Locate next point on path back to DRF <default is direct path to DRF>:

Either enter points along controlled dimensions, which are kinematic or controlled dimensions, or enter return to choose the default path directly to the DRF. In most cases, the datum paths will not go back to the datum reference frame directly.

In addition to global coordinates, each joint must be located relative to the datum reference frame (DRF) of each part that the joint connects. Datum paths are established which include only controlled dimensions which the designer may specify a tolerance, and kinematic assembly dimensions which adjust at assembly time. Besides selecting points to create the DRF paths, feature datums may also be selected as points if they are on the same part. An advantage to this is that once a feature datum has established a path to the DRF anytime you select that datum for a DRF path it will automatically generate the path to the DRF, even if the path includes ten different dimensions and more datums. To select a datum instead of a point select DATUM from the TOOLS + DATUM pop-up menu. The TOOLS and TOOLS + DATUM menus are shown below for comparison.

TOOLS
OSNap
CENter
ENDpoint
INSert
INTersection
MIDpoint
NEArest
NODe
PERpendicular
QUAdrant
QUICK,
TANgent
NONE
- - - - - - - - - -
FILTERS...
Cancel
U
Redo
List

TOOLS + DATUM
DATUM
OSNap
CENter
ENDpoint
INSert
INTersection
MIDpoint
NEArest
NODe
PERpendicular
QUAdrant
QUICK,
TANgent
NONE
- - - - - - - - - - - - - -
FILTERS...
Cancel
U
Redo
List

The computer will then show the following prompt:

Is this path correct? <Y>N: (Enter yes if DRF path is correct)

If path is not correct then enter No. AutoCATS will allow the user to re-select the DRF and DRF path. If feature datums were created incorrectly then you may reply yes to the prompt "Delete associated feature datums?" This will delete the feature datums associated with the individual path and not feature datums associated wiht other paths.

Select DRF on second part: (Select the DRF on the other contact part)
Locate next point on path back to DRF <default is direct path to DRF?>:

The message "Creating Joint ..." will appear while the information is being stored and the joint symbol drawn.


Edit Joint

This menu item allows the DRF paths for each joint to be displayed. This menu item can be helpful when predicting vector loops.

Command: EDIT_J
Select joint object to delete: (Select the joint symbol to delete)
Path 1 from joint to DRF ARM is shown. (Specified DRF path is displayed)
Hit return to continue
Path 2 from joint to DRF BASE is shown. (Specified DRF path is displayed)
Hit return to continue


Delete Joint

This menu item allows joints to be deleted which have been previously constructed. It is again important to remember that to delete all the information included with the joints the delete joint function must be executed. For example:

Command: DELETE_J
Select joint object to delete: (Select the joint symbol to delete)
Delete another joint? <Y>/N: No (If no more joints are to be deleted)

Feature datums for the DRF paths may be deleted by using AutoCAD's erase function. BE CAREFUL not to delete feature datums which are used in other datum paths.


DOFcheck

This menu item allows you check the degrees of freedom (DOF) for each part individually or all of the parts at once.

Command: DOFcheck
Select DRF on part to check DOF: (Select part's DRF)

The following prompts will then appear as AutoCATS performs the analysis.

Performing DOF analysis on part PART_1 . . .

If for example PART_1 has the correct number of joints and is constrained the next prompts will appear as follows:

PART_1 constrained and has 0 translational DOF left.
PART_1 constrained and has 0 rotational DOF left.
Remove all DOF arrows? Y/<N>: (Enter Y, yes, or N, No appropriately)

On the other hand, if PART_1 does not have the correct number of joints (for example, one joint instead of two) then the prompt will appear as below:

Select location to display translational DOF directions:
PART_1 is unconstrained in indicated direction and as 1 translational DOF left.
Additional joints may be required for accurate tolerance analysis.

After selecting a display location in a readable area an arrow will be inserted with will show the remaining unconstrained DOF direction. AutoCATS will then display the rotational DOF.

Select location to display rotational DOF directions:
PART_1 unconstrained about indicated axis and has 1 rotational DOF left.
Additional joints may be required for accurate tolerance analysis.
Press any key to continue.
Remove all DOF arrows? Y/<N>:

Once you have viewed the DOF constraints, the arrows may be either removed, or kept in place for future reference.


FEATURE CONTROLS

New Feature

Feature controls allow the engineer to incorporate machine variations into the tolerance analysis. There are fourteen ANSI Y14.5 feature controls which may be created by the modeler to account for surface variation. The sub-menu appears as below:

AutoCATS

FEATURES

*  *  *  *
NEW_F

EDIT_F

DELETE_F

--------

PARTS

JOINTS

SPECS

LOOPS

CATSFILE

DISPLAY

--------



--------

Zoom In

Zoom Out

Pan

Redraw

Cancel

AutoCAD

The pop-up menu for the ANSI Y14.5 feature controls is shown below:

FeatCtrl

FLAtness

STRaight

PARallel

PERpend

ANGular

TRUe Pos

ROUndness

CYLindri

CONcentr

PROfile

RUNout

The ANSI Y14.5 feature controls are shown below in the feature control icon menu .

Figure 3-4. Feature Control Icon Menu.

An example with feature controls follows using Figure 3-5.

Figure 3-5. Roundness Feature Control on Joint 3.

Command: NEW_F
Select type of feature control: ROUNDNESS
Select DRF on part which ROUNDNESS applies: (Select the part's DRF)
Select joint or datum where ROUNDNESS is to be applied: (Select joint 3)

For certain feature control/joint combinations, the length of surface contact must be specified.

Select two points which define the characteristic length: (Select two points)
Select Feature Control symbol location: (Select a point to begin text)

Select a feature control, the part name, joint to which the feature control is applied, and the location for the symbol.

The bandwidth will be prompted for next.

Enter the width of the ROUNDNESS tolerance band: (Enter the tolerance)
Create another feature control? <Y>/N: No

Tolerances may be either typed in or selected from the tolerance menu shown:

Bandwidt

BASIC

0.00000

0.00025

0.0005

0.00075

0.001

0.0015

0.002

0.0025

0.003

0.004

0.005

0.006

0.007

0.008

0.009

0.01

0.02

0.03

Edit Feature

The Edit F option allows the user to edit feature control tolerances.

Select : EDIT_F
Select feature control to modify: (Select the desired feature control)
Specify new tolerance band: (Enter new feature control tolerance)
Edit another feature control<Y>/N: (Enter yes to continue editing )

Delete Feature

The Delete F option allows the user to delete feature controls. Once again it is important to remember to delete feature control using the Delete F option or hidden information will not be deleted.

Select : DELETE_F
Select feature control to delete: (Select the desired feature control)
Delete another feature control<Y>/N: (Enter yes to continue deleting )


SPECIFICATIONS

Specifications are designer-imposed limits on critical assembly variables such as gap, orientation, and position. The sub-menu appears as below:

AutoCATS

SPECS

*  *  *  *



NEW_S

EDIT_S

DELETE_S

--------

PARTS

JOINTS

FEATURES

LOOPS

CATSFILE

DISPLAY

--------



--------

Zoom In

Zoom Out

Pan

Redraw

Cancel

AutoCAD


New Specification

Select NEW_S to begin identifying the reference parts for the design specification.

Command: NEW_S
Select specification type:

The four open loop and two closed loop specifications can be summarized as follows: Position allows the user to specify a circular tolerance zone on a point's horizontal and vertical position. A gap specifies an assembly's resultant clearance. Relative orientation specifies a bandwidth tolerance on an angle between features on two parts, as does parallelism. For closed loops, the dependent length specifies a tolerance on the point of contact between two parts. Dependent angles specify a tolerance on an angle formed by two vectors in a closed loop. A pop-up or icon menu will appear allowing you to select the type of specification. They appear as in figure 3-6:

SpecType

-----------------

OPEN

-----------------

POSition

VarGAP

PARallel

ORIent

----------------

CLOSED

-----------------

DepLEN

DEPAngle

Figure 3-6. Design Specification Menus.

The location of the specification is requested once the specification type has been identified.

POSITION OR VARIABLE GAP:

Select the location of the point of interest: (Select a point of interest)
Select DRF on first part:
Locate next point on path back to DRF <default is direct path to DRF>:
Is this path correct? <Y>/N:
Creating Specification joint . . .

Specification endpoints (points of interest and of reference) are created just like joints, but with only one DRF path created for each specification endpoint. Refer to the section on creating joints in this chapter for more information on creating DRF paths.

Select the location of the point of reference:
Select DRF on second part:
Locate next point on path back to DRF <default is direct path to DRF>:
Is this path correct? <Y>/N:
Creating Specification joint . . .


RELATIVE ORIENTATION OR PARALLELISM:

Select one of two endpoints on a first part's line of interest:
Select DRF on first part:
Locate next point on path back to DRF <default is direct path to DRF>:
Is this path correct? <Y>/N:
Select the other endpoint on the first part's line of interest:
Creating Specification joint . . .

 

Select one of two endpoints on a second part's line of reference:
Select DRF on second part:
Locate next point on path back to DRF <default is direct path to DRF>:
Is this path correct? <Y>/N:
Select the other endpoint on the second part's line of reference:
Creating Specification joint . . .
Select two points which define the characteristic length:


DEPENDENT LENGTH

Dependent length and dependent angle, discussed next, are slightly different because they are specifications for closed loops and must be created after closed loops are created.

Select a dependent vector: (Select the dependent vector to constrain)


DEPENDENT ANGLE

A dependent angle specification places a design specification on an angle in the vector loop.

Select angle's first vector:
Select angle's second vector:

The two vectors must be in the same loop and connected with a common endpoint.

The tolerance can be specified once the second endpoint has been created. For GAP, Dependent LENgth, and DEPendent angles, the tolerance can be applied in one of three ways: symmetrical, nonsymmetrical, or by max/min limits. The last two options can be selected from the default SymTols pop-up menu. For POSition, Relative ORIentation, and PARallelism, the tolerance applied is a circular tolerance zone or bandwidth rather than a dimensional tolerance.

Enter symmetrical tolerance on indicated dimension, <+/- 0.00000>

Nominal length 7.6450 +/- (Enter in desired tolerance.)

-OR-

Enter the width of the tolerance band.

Nominal orientation 60.0000 deg : (Enter in desired tolerance.)

Inserting specification . . .

Select Specification Name Location: (Enter the desired location)

 

Remember that open loop specifications must be applied between two separate parts. If you try to create a second open loop endpoint on the first part you specified, the following will appear:

AutoCATS error *** DRF must be different from DRF of first part.


Edit Specification

Like other model elements, specifications may be edited. Only the tolerance may be edited. The default tolerances will be the old specification tolerances.

Command: EDIT_S
Select specification to modify:
Enter symmetrical tolerance on indicated dimension, <+/-0.002>
Nominal length 0.632 +/- (Enter desired tolerance)
Edit another specification? <Y>/N:


Delete Specification

Like other model elements, specifications may be deleted.

Command: DELETE_S
Select specification to delete
Delete another specification? <Y>/N:

AutoCATS will automatically delete any endpoints which are associated with the specification.


LOOPS

Loops relate the parts, contact joints, and DRF paths in the assembly. If loops are created correctly, they can forever after be transparent to the user. This menu option creates kinematically and geometrically correct vector loops for an assembly.

Command: LOOPS

The menu appears as follows:

AutoCATS

LOOPS

*  *  *  *



NEW_L

EDIT_TOL

DELETE_L

AUTOLOOP

--------

PARTS

JOINTS

FEATURES

SPECS

CATSFILE

DISPLAY

--------



--------

Zoom In

Zoom Out

Pan

Redraw

Cancel

AutoCAD

New Loop

Although the user will generally want to use AutoLoop, this option allows the user to manually create open and closed loops. The loops can be defined by sequentially selecting the joints which determine the loop path. The loop is complete when the first joint in the loop is selected again. Inputs are checked for errors to prevent incorrect loops. An example is shown below:

Command: NEW_L
Select type of loop, Open/<Closed> :

If the loop is a closed loop, just enter return. Closed loops start and end at the same location and represent kinematic constraints on the assembly. If the loop is an open loop, type OPEN and then select a specification as follows:

Select a specification:
Starting loop at specification joint 12:
Obtaining joint location . . .

After selecting a specification, the loop will automatically begin at the second specification joint created (the point of reference). The loop sequence then follows as with closed loops.

Select a contact joint:

Select contact joints going from one part to the next until the loop is complete. AutoCATS returns "Obtaining Joint Location . . . " after each joint is selected. AutoCATS also indicates which part the contact joint is on.

Starting loop on part ROLLER
Transferring to part HUB

These prompts indicate that the loop began with a contact joint on Roller. The next joint should then be in contact with both the Roller and the Hub. For closed loops, the loop is finished when the first joint is selected again. For open loops, the loop is complete when the other ending specification joint (the point of interest) is selected. When the loop has been completed, the computer prompts to see if the constructed loop is correct. If the loop is not correct, enter NO and create the loop again. If the loop was correct, it will then determine dependencies and prompt for tolerances on controlled dimensions.

Is this loop correct? <Y>/N: Yes
Determining Dependencies . . .
Enter symmetrical tolerance on indicated dimension, <+/- 0.00000>
Nominal length 27.6450 +/- (Enter in desired tolerance.)

The tolerances can be placed on angles as well. In order to place symmetrical or non-symmetrical tolerances (+/-,-,+) simply select the appropriate symbol on the SymTols pop-up menu. Independent angles of 0deg.and 180deg. are assumed to have a 0.00deg. tolerance. If otherwise, place an angular feature control tolerance at that location.

Select location to display loop name: (Select a point on the drawing)
Creating Loop . . .
Create another loop? <Y>/N: (Enter Yes to continue or No to exit)

Autoloop

Automatic loop generation completely automates the loop generation process for loops. This is especially helpful for the AutoCATS user. Usually it is difficult to know which path a loop should follow. Once Autoloop has been selected, the program shells out of the AutoCATS Modeler to run a program which generates an optimum vector loop. The user is then prompted for controlled dimension tolerances for both lengths and angles. Tolerances may be either typed in or selected from a pop-up tolerance menu. The pop-up tolerance menu is the same as for the GAP, LEN, and DEP specifications.

Command: Autoloop
Generating Loops. . .
Is this loop correct? <Y>/N: (Enter "Y" or "N" appropriately)
Determining dependencies. . .
Enter symmetrical tolerance on indicated dimension, <+/- 0.02500>

Nominal length: ##.## ±(Enter symmetrical tolerance)

Tolerances may be inputted either symmetrically, non-symmetrically, or by max/min limits. To change from symmetrical tolerances to non-symmetrical tolerances, select the appropriate symbol on the default SymTols pop-up menu. If the controlled dimension is an angle, the prompt will be as follows:

Enter symmetrical tolerance on indicated dimension, <+/- 0.0000>

Nominal angle (in degrees): ##.# ± (Enter angle tolerance in degrees)

Once all control dimensions have been toleranced, the program prompts for the location of the loop name and then continues with the next loop until all loops have been generated.

Select location to display loop name:
Creating Loop...
Generating Loops...


Edit Tolerance

After loops are created the vector tolerances may be edited.

Command: EDIT_TOL
Select vector to modify: (Select the vector you want to modify)

AutoCATS does not allow the user to change the tolerance if the vector is a dependent variable.

Enter symmetrical tolerance on indicated dimension, <+/- 0.0000>

Nominal angle (in degrees): ##.# ± (Enter angle tolerance in degrees)

Modify another vector <Y>/N?


Delete Loop

After loops are created they may be deleted by selecting this side menu option. Remember to use this command to delete all of the information related to the loop.

Command: DELETE_L
Select loop name to delete:
Delete another loop <Y>/N?


CATSFILE

This menu command allows a neutral file to be created which contains the information needed to perform tolerance analysis in the AutoCATS Analyzer. The submenu appears below:

AutoCATS

CATSFILE

* * * *



WRITE_NF





--------

PARTS

JOINTS

FEATURES

SPECS

LOOPS

DISPLAY

--------



--------

Zoom In

Zoom Out

Pan

Redraw

Cancel

AutoCAD


WRITE Neutral File

A file will be created called dwgname.nf or the name you specify. This name may have any extension and be a maximum of eight characters long. The file will be located in the current directory with a default extenstion .nf.

Command: WRITE_NF
Enter file name to be saved <dwgname> : (Enter the desired name)

If a filename already exists then the following prompt will appear:

File dwgname.nf already exists, overwrite? Y/<N> :

Messages at the bottom will show which information is being written to the neutral file at that moment.


DISPLAY

The display feature allows the user to toggle on and off each individual layer of AutoCATS. When a layer is drawn on it automatically toggles on. The menu is shown below:

AutoCATS

DISPLAY

*  *  *  *



CatsOn

CatsOff

DRFs

FeatDtms

Joints

Features

Specs

Loops

--------

MV Label

--------

PARTS

JOINTS

FEATURES

SPECS

LOOPS

CATSFILE

-------



AutoCAD

CATS ON turns all AutoCATS layers on while CATS OFF turns all AutoCATS layers off. AutoCATS layers are identical to AutoCAD layers.

The MV Label option allows the user to "unclutter" the display by moving DRF, joint, and datum labels from their default locations.


HELP

You can use the HELP (or "?") command to obtain a list of both AutoCAD and AutoCATS commands in case you have forgotten a command name. Format or options available with each command are also available. The help command is accessed just like the AutoCAD help command. For detailed information about a specific command, reply with the desired command name:

Command: HELP (or ?)
Command name (RETURN for list): NEW_P

If there is more help information than will fit on the screen at once, this prompt will appear:

Press RETURN for further help.

When you enter return, the help display will continue. If you would rather abort, enter CTRL-C. Just as in AutoCAD, if you simply enter `help in the middle of the command AutoCAD displays help for the current command and pauses before resuming the command.

Another way to access help command is to select the four stars (* * * * ) under each sub-menu of AutoCATS. You may also select the command name from the menu instead of typing in the command name.


Zoom In

The Zoom In option of the AutoCATS menu allows the user to zoom in on a section of the assembly drawing to allow more accurate selection. This function does not interrupt the running function and is like AutoCAD's zoom function except Zoom In requires only a window selection by a cursor or the mouse.


Zoom Out

The Zoom Out option of the AutoCATS menu allows the user to zoom out, or go to the previous zoom of the assembly drawing. This function does not interrupt the running function.


Pan

The pan option of the AutoCATS menu allows the user to pan a section of the assembly drawing. This function does not interrupt the running function.


Redraw

The redraw option of the AutoCATS menu allows the user to redraw the assembly drawing. This function does not interrupt the running function and is identical to AutoCAD's redraw function.


Cancel

The cancel option of the AutoCATS menu allows the user to cancel out of any command. This may also be done by typing CTRL-C.


AutoCAD

The AutoCAD option of the AutoCATS menu allows the user to return to AutoCAD. This may also be done by typing "cad".

 

 PRO-E 2 D
Modeler:
Title | Overview | Modeling | Commands
Analyzer:
Title | Overview | Analysis | Allocation | Interface
Verification: Overview

 AutoCAD 2 D
Modeler:
Title | Overview | Modeling | Commands
Analyzer: Title | Overview | Analysis | Allocation | Interface
Verification: Title | Overview

 Catia 3 D
Modeler:
Title | Overview | Modeling | Commands | Building a Tolerance Model

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