Author

 Adapted by Janet Landrigan from Leonard Colelli and Ronald Tenny's original lesson. Jigs, fixtures and production flow chart developed by David Richards.

Title

Grade Level

7-9

Subject Area

Technology Education

Overview of unit/lessons/activities (assumptions of prior knowledge/learning)

Design brief: Students will produce a simple product using a mass-production system with jigs, fixtures and/or templates. Teachers can prepare the jigs and fixtures. An alternative would be for the students to attempt to design their own jigs and fixtures appropriate to the product.  As this is a short duration introductory experience in mass production, the teacher should have the jigs and fixtures prepared and set up.

AIM:  To design a product which will be mass produced using the line production approach.

Introduction:

    Products used to be made be hand but with the advent of the industrial revolution, ways of mass producing products developed. Today almost all products are mass produced. Students should have instruction on all machine tools and shop safety before this project

Correlations to ICT and curriculum outcomes

Curriculum outcomes to be added

Projected timeline for preparation and for carrying out activities

  2 class periods( based on 2hr/wk class time)

Equipment Requirements: (computers, software, etc)

Tools and Materials:

Teaching materials provided (Blacklines, worksheets, templates, teacher materials)

Resources available for teacher/student use (websites, references, etc)

Detailed instructions for each activity or lesson (teacher notes, activity information, learning strategies, teacher role, student roles)

Background information:

Students should know the difference between custom and mass production. The difference between a jig, fixture, template and pattern can be discussed.

PROCEDURE:

1. Make sure to have all jigs and fixtures pre-constructed and tested.

2. An operation sheet should be developed for each flow chart operation and should be position at each workstation during production.

3. Demonstrate all workstation to group , explaining how jigs and fixtures work in general.

4.Assign students to each workstation, making sure they understand their specific task

5. As production run in being established, assist where slow down occurs.

6. Assign the creation of a logo for package labels and print off enough for class using card stock.

PRODUCTION FLOW CHART FOR YOYO

SIDES:

 S1 -     Drill ¼” holes, 3/8” deep using jig at drill press

S2 -     Cut corners of blanks using jig at the Band Saw

S3-      Rout blanks round using router #1 with laminate bit

S4 -     Sand blanks using jig at Disk and BELT Sander

S5 -     Rout edge of blank with corner round bit using router #2 jig

S6 -     Hand sand backs, edges and outside surfaces

 INSPECT and move to Assembly.

 DOWEL PIN:

 D1 -     Cut dowels 7/8” long using V-Block with stop and small saw

D2 -     Sand ends lightly

 INSPECT and move to Assembly

 ASSEMBLY:

 A1 -     Apply glue to hole in one side

A2 -     Insert dowel

A3 -     Inspect – Test fit with spacer for proper fit***

A4 -     Apply glue to hole in second side

A5 -     Attach sides using spacer (DRYING TIME BEFORE REMOVING SPACER – 2 MINUTES)

 Final inspection before sending to storage

 STRING:

 Attach string

 PACKAGING AND LABELING: final step

Student products expected

Samples (include teacher notes, assessment information, student work if available)

  Links to yo-yo pictures  to follow

Logistics (organization, grouping, management issues, access to technology)

  Refer to procedure. Students will want to rotate duties so they can have a change to use the other machines.

Assessment information (e.g., rubrics for products and/or process)

   Students are accessed on their work ethic, attention to detail at their stations, and ability to work in a cooperative setting. Detailed rubrique to follow.

Possible extensions

  Doing market research for a product, designing their own jigs and fixtures and marketing their product through inventive packaging and  producing a commercial( either in powerpoint or moviemaker)