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Activity 4.5 – Pegboard Toy
Purpose
When you receive a toy, what is the first thing you wonder about it? Do you wonder how it works? Sometimes when you received or bought a toy, did you ever wonder who designed it or who may have made decisions about its color or the materials that were used to make it? Being a toy designer would seem like it might be easy, or would it?
Designing a toy can be a challenging but fun process. You must consider many factors, such as safety, materials, and appropriate use. In addition, you have a chance to try out ideas and experiment with what you think might be fun to play with; however, you must design something that is useful and will be liked by kids like yourself.
Learning how to design is also a process that takes time and different opportunities to explore and learn. In previous lessons and activities, you have been taught different aspects about design, sketching, and 3D modeling. In this activity, you will see how a pegboard with matching mallet is designed and the pieces tested to see that they fit appropriately and that they are easy for a young child to enjoy playing.
Equipment
· Sketch paper
· Pencil
· Engineer’s notebook
· Computer with appropriate software, such as Inventor
· Sample pegboard with mallet
Procedure
As a new employee of
Tattered Toy Company, you have been asked to learn more about their best
selling toy, Pegboard (See Figure 1). Your supervisor, Mr. Duggle said that
you needed to know how this pegboard was designed and that he wanted you to
learn as much about the design process as possible.
“You will need to keep
track of your work, so be sure you keep notes and check off your work as you
complete each step,” continued Mr. Duggle, “I will be watching you!”
You reach for your
engineer’s notebook, sketch paper, and pencil to prepare to keep notes and
learn how to make a 3D model of the Pegboard. As Mr. Duggle leaves you to
work, he calls back to you, “Good luck! Be sure to save all of your work.”
Directions:
Read each step, perform the operation, and check the box after completion.
Creating Parts:
q
Open a new Part File.
q
Create a round part 1²
diameter and 3²
long.
q
Save as Round Peg (.ipt).
q
Open a new Part File.
q
Create a square part 1²
x 1²
x 3²
long.
q
Save as Square Peg (.ipt).
q
Open a new Part File.
q
Create a pegboard part ¾²
x 3²
x 5¾²
with holes that will accept the round and square pegs you designed.
q
Save as Pegboard (.ipt).
Creating Assembly of Parts:
q
Open a new Assembly File.
q
In Panel Bar, select Place
Component.
q
Place the pegboard part,
then the round and square peg parts in the drawing area.
q
Look in Browser to see if
the pegboard is grounded.
If
not, right click on its icon and select Grounded.
q
In Panel Bar, select Place
Constraints then Mate
parts.
q
Save as Pegboard Toy (.iam).
Next, you will add end legs to the Pegboard Toy.
These legs will raise the pegboard up off a table so that the square and round
pegs may be inserted until they are flush with the top surface of the
pegboard.
You will be using wood that is ¾” thick. The end
legs will be assembled to the pegboard using a Dado Joint, a special joint
that adds strength to joining two pieces of wood.
Again,
read each step, carefully performing
each operation while keeping track of your work by checking each box after
completion.
q
Open your Pegboard Toy Assembly
File.
q
In Panel Bar, select Create
Component.
q
In the Dialog Box, name the
component End. Check the box beside Constrain Sketch Plane to
Selected Face. Click OK.
q
Place a Sketch Plane on
the front of the pegboard.
q
Project geometry (front
edge of pegboard) onto the Sketch Plane.
q
Sketch
and profile (apply geometric and dimension constraints)
the End.
Your screen should look something like this while
you are sketching (See Figure 2).
q
Extrude
part.
q
Save as End (ipt).
q
Mate
End to the Pegboard.
q
In Panel Bar, select Place
Component and place and then mate other End to the Pegboard.
q
Save.
Your updated assembly should look like
this.
You have now completed the first part of the 3D model
of the Pegboard Toy. Like all toys, once an initial design is made, it must go
before the design department. The Tatter Toy design department has just
finished with their review of your Pegboard Toy. They decided the toy needed
something else to make it fun to play. After some discussion, they decided
that it needs an additional triangular shaped peg to improve the design.
You are to design this peg and edit the Pegboard toy
so that it will remain the same size, but will have the necessary parts.
Follow each step,
performing the operation and checking off each box as you complete the step.
Continue to take notes and be sure you note challenges and questions you may
have as you improve the Pegboard Toy
q
Open a new Part File.
q
Create an equilateral
triangle peg 1” high and 3” long.
q
Save part as Triangle Peg (ipt
file).
q
Open your Pegboard file
and edit it to accept the Triangle Peg.
You
may want to consider the idea of placing the three openings equally distant
from each other with the openings of each shape centered on the pegboard.
q
Save.
q
Open the Pegboard Toy (.iam).
q
Place and mate the Triangle
Peg in the Assembly.
q
Save.
After you completed your
update of the Pegboard Toy, the Tattered Toy Design Department reviewed your
work and came up with yet another idea to help make the Pegboard Toy more fun.
They decided to have you create a mallet for the Pegboard Toy. You will get to
show them how well you can sketch and create 3D models. Since you are a new
employee, the Design Department decided to give you some ideas to help you
with your design of the mallet with the following requirement: The mallet head
must be 1 ¾ “ in diameter x 3” long.
q
Draw a sketch of your Mallet
Head on the sketch paper provided.
