HOMEWORK 1 � TROWEL by KF3fUk

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									TRINITY HIGH TECHNICAL DEPARTMENT

Trowel – Homework 1
     1. Ergonomics is an important part of telephone design.




        a) You have been asked to help design a mobile phone. What human factors should
        be considered when …..

        (i)      deciding on the size of the “dialling” buttons?

                _________________________________________________________
                                                                                         (1)
        (ii)     the length of the mobile phone?

                _________________________________________________________
                                                                                         (1)
        (iii)   the breadth of the mobile phone?

                _________________________________________________________
                                                                                         (1)


        b) Suggest one way your design for the mobile phone could be checked for comfort
           and ease of use before being mass-produced.

                _____________________________________________________________

                _____________________________________________________________
                                                                           (1)


2.      The handle of your trowel is to be made using Mild Steel Flat Bar. The blade is to be
        made using Mild Steel Sheet.



        (a) State an ergonomic consideration that should be taken into account during the
        designing of the handle.


        ________________________________________________________________
                                                                                         (1)

        (b) State one advantage and one disadvantage of using Mild Steel Sheet to make the
        Trowel.

                Advantage
                _______________________________________________________

                Disadvantage
                _____________________________________________________
                                                                                         (2)


                                                                                 Total / 7
TRINITY HIGH TECHNICAL DEPARTMENT

Trowel – Homework 2
1.      Which one of the following metals will rust if left outside for a long time?

        Copper                            Aluminium                          Mild steel
                                                                                      (1)
2.      The tool shown below is used when marking out curves on the trowel. What is the name
        of this tool?



                                          Outside callipers

                                          Odd-leg callipers

                                          Spring dividers

                                                                                               (1)

3.   The tool shown below was used for marking out the trowel. What is the name of the tool?

                                                                                               (1)

                                          Odd leg callipers

                                          Scriber

                                          Outside callipers


4.      A ball pein hammer is used in riveting. Identify the ball pein hammer below.
                                                                                               (1)




5.      The tool shown here is very useful when marking out metal.
        What is the tool called?

        _____________________________                                                          (1)

        What is it used for?

        ___________________________________________________________                            (1)

6.      What is a template?

        ____________________________________________________________                           (1)

7.      The brief for a clock is given below.
        BRIEF
        Design and manufacture an attractive trowel for digging up weeds. It must be capable
        of being mass produced at an affordable cost and comfortable to hold.
        State the part of the brief that refers to:

        Aesthetics ___________________________________________________

        Function      ___________________________________________________

        Ergonomics ___________________________________________________                         (3)

                                                                                       Total   / 10
TRINITY HIGH TECHNICAL DEPARTMENT

Trowel – Homework 3
1.   Methods for joining metal can be split into two categories, Permanent and Non-
     permanent. Name a permanent and a non-permanent joining method and describe
     where they would be used.
     Permanent
             __________________________________________________________


             __________________________________________________________

     Non-permanent
           __________________________________________________________


             __________________________________________________________(4)

2.   Snap head rivets were used to join the handle and the trowel. Identify a snap head rivet
     below.




                                                                                        (1)

3.   The mild steel trowel turned ________________ in colour after it had been heated and
     dipped in oil.
                                                                                    (1)
4.   The handle of your trowel was dip coated. State TWO reasons why dip coating is a
     suitable finish for the handle

     ________________________________________________________________

     ________________________________________________________________
                                                                                        (2)

5.   A fluidiser is used in dip coating. Sketch a fluidiser in the space provided below and
     label the main parts.




                                                                                    (2)
6.   Describe the main stages of dip coating the handle. The first one has been done for
     you.

     1. Clean handle with emery cloth to remove dirt and grease.

     2. ________________________________________________________________

     3. ________________________________________________________________

     4. ______________________________________________________________(3)

                                                                                Total /13
TRINITY HIGH TECHNICAL DEPARTMENT

Trowel – Homework 4 - Research of Tools
For each of the tools below, explain what they are used for. Point out any
special features the tool has and mention other tools they used with. Make
a sketch of the tools in pencil and label it. Use full sentences    (Total / 12)


A Former                 (This is an example )
Used for :    A former is used to shaping sheet metal into curves

Special features: It is made from steel and is a small length of pipe and an
engineers vice hold it when the sheet metal is formed.

Raw Hide Mallet
Used for :

Special Features


             Sketch

File
Used for :

Special Features


             Sketch


Rivets
Used for :

Special Features


              Sketch

Ball Pein Hammer
Used for :

Special Features:

                                                      Sketch
TRINITY HIGH TECHNICAL DEPARTMENT


Clock – Homework 3

1.   The tool shown below was used to hold the clock when drilling holes. What is the name
     of this tool?

                                                   Engineer’s vice

                                                   Machine vice

                                                   Hand vice                           (1)


2.   A pupil’s design for a novelty clock made from acrylic is shown below. Complete the
     sequence of operations for the edges of the acrylic.




     Stage 1           Cross file to acrylic until it is round.

     Stage 2           __________________________________

     Stage 3           __________________________________

     Stage 4           __________________________________
                                                                                       (3)

3.   The finished clock is to be evaluated. Add two further questions to the list below which
     could be used to evaluate the design.

     Does it look good?

     Can the time be read easily?

     ___________________________________________________________________

     ___________________________________________________________________
                                                                      (2)

4.   The saw used to cut the acrylic is shown below. Circle the name of this saw.


                                                   Panel saw

                                                   Junior hacksaw

                                                   Coping saw
                                                                                       (1)
5.   From the list below, circle the two most important reasons for choosing acrylic for a
     CD rack
               Available in a range of colours
               Cracks easily when being drilled
               Expensive to buy
               Easy to bend when heated
               Available in large sheets                                               (2)
                                                                      Total            /9
TRINITY HIGH TECHNICAL DEPARTMENT

Clock – Homework 2

1.      The machine shown below is used to heat acrylic sheet before bending. Circle the
        correct name of this machine.

                                                        Strip heater

                                                        Soldering iron

                                                        Spot welder


                                                                                        (1)

2. Name an item of safety equipment, apart from goggles, which should be worn when
   handling hot acrylic.

        _________________________________________________________________

                                                                                        (1)

3. In the forming process, the temperature of the acrylic is important. Describe what might
   happen if the temperature is

        (i)     not hot enough ___________________________________________________

        (ii)    too hot
                __________________________________________________________

                                                                                        (2)

4. Acrylic is a thermoplastic. Describe the main difference between thermoplastic and
   thermosetting plastic.

        ___________________________________________________________________

        ___________________________________________________________________

        ___________________________________________________________________
                                                                         (2)

5. The helmet below is made from thermoplastic. State two properties of thermoplastic that
   make it a good choice for making it with a thermoplastic.




     1. __________________________________________________________________

     2. __________________________________________________________________

                                                                                        (2)

                                                                         Total          /8
TRINITY HIGH TECHNICAL DEPARTMENT

Clock – Homework 1

1. You are a toy designer who has been asked to produce a new design for an educational toy for
   very young children. Suggest three things that are likely to be in the specification given to you.




        (i)     ___________________________________________________________

        (ii)    ___________________________________________________________

        (iii)   ___________________________________________________________(3)




2. State four Ergonomic considerations the designer must have considered when designing
   this bicycle.

    _____________________________________________________________________

    _____________________________________________________________________

    _____________________________________________________________________

    _____________________________________________________________________
                                                                        (4)

3. A pupil has designed a toothbrush holder. Part B is made from acrylic sheet. Five holes
   have to be drilled as shown below.




    Describe one method that would prevent the acrylic from cracking when it is drilled.

    _____________________________________________________________________
                                                                        (1)

                                                                          Total            /8
TRINITY HIGH TECHNICAL DEPARTMENT

CLOCK – Homework Task 4 – Researching Materials

For each of the four materials below Identify what category of wood or plastic
they are. Point out any special features e.g. brittle, strong. Find out where
these materials are mostly used. Use full sentences                  (Total / 12)


MDF                      This is an example
Category: MDF is a manufactured board.
Special Features: MDF is usually bought in large sheets and does not
have any grain. It has a good quality finish that is easily machined.
Uses: MDF is used for shelving, table tops etc. It is not suitable for
outdoor use.

Acrylic
Category

Special Features

Uses


Plywood
Category

Special Features

Uses


Laminate
Category

Special Features

Uses

Hardboard
Category

Special Features

Uses

								
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