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Lesson 3 - ProDESKTOP 8

By Judith Ramos,2014-08-17 14:18
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Lesson 3 - ProDESKTOP 8

Introduction to Features

    Pro/DESKTOP 8

    Loft and Modifying Features

    Prepared by Stephen Yaffe

What you should familiar with What you will learn by completing

    before starting this tutorial. this tutorial.

    ; Pro/DESKTOP graphical user ; Workplane creation

    interface ; Construction lines

    ; Sketching tools ; Applying constraints

    ; Object browser ; Equal length lines

    ; How to select objects ; Loft through profiles

    ; What makes a valid profile ; Chamfering faces

    ; Constraints ; Projecting Lines

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Conventions of this Tutorial

    This is the third tutorial in the introductory series for Pro/DESKTOP 8 features. Since most people who attempt this tutorial will have already completed Lessons 1 and 2, this tutorial assumes a nominal knowledge of the Pro/DESKTOP 8 GUI. In this tutorial, features will be introduced using

    keyboard shortcuts. These will be shown as capital letters within brackets [**]. Feature commands (extrude, revolve, etc.) will also be shown in

    brackets but with the Control key or Alternate key followed by a plus sign

    (+) as a preface, and multiple key strokes separated by a comma.

    Example, to create an extrusion using keys rather than the icon, one would first press down the Alt key, then while holding it, press and release the R

    key once, then press and release the E key, and finally release the Alt Key.

In notation form, extrusion looks like this: [Alt + R, E].

    Sequential operations will be indicated by commands separated by an arrow [>]. For example, the following command “[C] > Drag a circle” means type

    the letter “C” key on your keyboard to select the circle sketching tool, and then drag a circle.

    Set Up

    Just in case you didn’t complete Lesson 1 or 2, there are a few things you will need to do to get your computer ready for this tutorial. This project has been done in INCHES. The first thing you will need to do is make sure that the unit of measurement on your computer is set to inches.

    1. Open Pro/DESKTOP

    ; Start > Programs > PTC Pro/DESKTOP 8.

    ; From the file menu > go to Tools > Options.

    ; Select the Units tab > change the units to Inches in both fields > OK.

    In this assignment, you will be creating a complex polygon. You will begin by sketching a septagon, and then you will project it up to a newly created workplane - sketch combination. After making some modifications to this

    new sketch, you will first loft between these two profiles then chamfer the top and bottom of the resulting form.

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1. Open a new design file

    ; [Ctrl + N] > [Enter]

    ; In the Workplane browser,

    click on the plus sign to show

    the initial sketch.

    ; Click once on the word Initial to

    select the title > then click it

    once again to edit it. ; Change the name to Bottom.

    ; In the design field, sketch a

    strait line.

    2. Sketch six more lines,

    connected at a single point in

    the center. These lines will

    become “spokes” for a seven-

    sided polygon.

3. Set the length of a line

    ; [Z] > Sketch the dimension of

    one of these lines.

    ; Double click on the number tag

    two or three times to activate

    its properties box.

    ; Enter a new distance of 10” > [Enter].

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4. Select all the lines and constrain them to be equal length

    This selects all the lines. On the screen, all of the seven lines ; [L] > [Ctrl + A]

    will turn red, indicating that they are selected.

    ; Move the mouse to the file menu at the top of the screen > select

    Constraints > from the drop down menu select Equal Length. Now all your

    selected lines will 10” in length.

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    5. Convert lines to Construction

    Lines

    ; While all the lines are still

    selected (red), move your

    mouse to Line in the File Menu >

    Select Toggle Construction.

    The short cut for Toggle

    Construction is [Ctrl + G].

    Note: By converting these spokes to Construction lines, they will not become part of the “valid profile”, instead they will be considered reference lines. The word Toggle suggests that this command

    functions as a switch, and can be turned on and off. The value of this will become clear after a few

     more steps.

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    6. Connect the ends of the seven

    equal length spokes with seven

    new lines

    ; Select the strait line tool [S] >

    find the end point of a line (you

    will see a black “snap-to” square

    when you have found the end

    point) and drag the line to the

    end point of a neighboring line.

    Note: In Pro/DESKTOP 8, once you have connected all the end points,

     the septagon will be complete and the new valid profile will be filled

    with a “fill color”. In Pro/DESKTOP 2000i2, to get a fill color, you will have to Toggle Sketch filled [Ctrl + Shift + F].

    7. Convert the septagon to an

    equilateral septagon

    ; [L] >While holding the [Shift]

    key on your keyboard, select

    each of the lines that make up

    the seven-sided wheel (see the

    picture to the right).

    ; Again, go to Constraint in the

    File menu at the top of the

    screen > from the drop-down

    menu, select Equal length. (See

    the picture below).

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    ; To verify that the septagon in

    now equilateral, you might want

    to view onto the workplane.

    Type [Shift + W] to look

    straight down on your image.

    To go back to the default,

    isometric view, type [Shift + I].

    As mentioned above, the word toggle suggests an on/off switch. The two images to the right here

    show you that you can turn

    selected lines in to construction lines by typing [Ctrl + G]. You can just as easily turn them into regular lines by typing [Ctrl + G] again. Try doing this now and see how the fill pattern turns on and off as the lines of the “spokes” and the lines of the “wheel” take turns being construction lines.

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8. Create an Offset Workplane

    ; In order to Loft two profiles,

    there needs to be two

    different workplanes to loft

    between. These workplanes can

    be offset evenly, or at an angle

    or between objects. This

    tutorial requires the creation

    of an Offset Workplane.

    ; Type [W] to select workplanes.

    Note: in the select workplane mode, lines are not visible. But since workplanes expand and contract to completely and snugly

    surround sketches, you should be able to identify the right

    workplane.

    ; Left-click on the workplane

    with the sketch Bottom to

    select it > While it is selected

    (red), right click to bring up a

    context sensitive menu > from

    this menu, select New

    Workplane.

    ; A new dialogue box will appear >

    select Offset > [Enter].

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    ; You will see a small yellow

    square in the center of your

    selected workplane; this is

    called a “handle.”

    ; Click and drag this handle up to

    20 inches.

    Note: In Pro/DESKTOP 8, you will have a read out at your curser that indicates the distance of the offset as you drag up or down. Alternatively, you can simply enter

     the desired value in the New Workplane dialogue box.

    9. Add a New Sketch to your New

    Workplane.

    ; While the new, offset

    workplane is selected, right-

    click. This will bring up a new

    context sensitive menu.

    ; Select New sketch > name it

    Top > [Enter] (see below right).

    Note: Below you will see a picture of the Workplane browser with the new workplane, workplane 1 and the new sketch, Top.

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10. Project the septagon up to the new sketch

    ; Type [L] to select lines > with no sketching tool selected (double-click once

    on a blank area of the design field to deselect any sketching tool).

    ; Drag a selection lasso around the septagon in the sketch Bottom to select

    all the lines.

    ; In the File menu at the top of the screen, select Line > from the drop-down

    menu, select Project. This will “pop” the selected lines up into the active

    sketch Top.

    Note: You can tell that a sketch is active by looking in the object browser. If the word by the sketch icon appears in bold, it is active. To activate a dormant sketch, in the object browser, double-click on the sketch name once.

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