Lesson Plan. Time It should take approximately three, 45-minute classes to teach the lesson and allow for lab time. Preparation

Transcription

1 Common Sheet Metal Seams Flexible Manufacturing Lesson Plan Performance Objective At the end of the lesson, students will demonstrate how to construct common sheet metal seams by completing the Common Sheet Metal Seams Assignments #1 and #2, matching the criteria in the Common Sheet Metal Seams Assignment Rubric. Specific Objectives Identify common seams. Construct the common seams used in sheet metal development. Construct a small sheet metal box. Identify Personal Protective Equipment (PPD) needed to complete assignments. Demonstrate how to use tools and equipment safely. Terms Flange- This is an edge folded to a 90 angle to make a corner or part of a seam. Flat locked seam- The edges are folded over and slid together to lock the seam. Grooved locked seam- The edges are folded over and slid together. A hand groover is used to flatten the seam to lock it together. Helm- This is the edge of a piece of metal that is folded over on itself for strength and smoothness. Seam- This is a joint formed by two pieces of metal, overlapped and held in place by spot welds, rivets, or bends. Single bottom seam- This is a seam used to seal a bottom into a part. Standing edge seam- A seam used in roofing to seal the edges of the metal panels. Wire rolled edge- This is the edge of a piece of metal that is wrapped around a piece of wire. Time It should take approximately three, 45-minute classes to teach the lesson and allow for lab time. Preparation TEKS Correlations This lesson, as published, correlates to the following TEKS. Any changes/alterations to the activities may result in the elimination of any or all of the TEKS listed. 1

2 Flexible Manufacturing (c) o (11) The student applies the knowledge and skills of sheet metal manufacturing in simulated and actual work situations. The student is expect to: (B) construct common sheet metal seams. Interdisciplinary Correlations Geometry (c) o (1) Mathematical process standards. The student uses mathematical processes to acquire and demonstrate mathematical understanding. The student is expected to: (A) apply mathematics to problems arising in everyday life, society, and the workplace. o (11) Two-dimensional and three-dimensional figures. The student uses the process skills in the application of formulas to determine measures of two- and three-dimensional figures. The student is expected to: (A) apply the formula for the area of regular polygons to solve problems using appropriate units of measure. Occupational Correlation (O*Net Job Title: Sheet Metal Workers O*Net Number: Reported Job Titles Sheet Metal Mechanic; Sheet Metal Worker; Journeyman Sheetmetal Worker; HVAC Sheet Metal Installer (Heating, Ventilation, and Air Conditioning Sheet Metal Installer); Sheet Metal Apprentice; Field Installer; Sheet Metal Fabricator; Heating, Ventilation, Air Conditioning - Refrigeration Technician (HVAC-R Technician); HVAC Technician (Heating, Ventilation, and Air Conditioning Technician); Sheet Metal Installer Tasks Determine project requirements, including scope, assembly sequences, and required methods and materials, according to blueprints, drawings, and written or verbal instructions. Lay out, measure, and mark dimensions and reference lines on material, such as roofing panels, according to drawings or templates, using calculators, scribes, dividers, squares, and rulers. Fasten seams or joints together with welds, bolts, cement, rivets, solder, caulks, metal drive clips, or bonds to assemble components into products or to repair sheet metal items. Install assemblies, such as flashing, pipes, tubes, heating and air conditioning ducts, furnace casings, rain gutters, or downspouts in supportive frameworks. Convert blueprints into shop drawings to be followed in the construction or assembly of sheet metal products. Fabricate or alter parts at construction sites, using shears, hammers, punches, or drills. Select gauges or types of sheet metal or nonmetallic material, according to product specifications. Maneuver completed units into position for installation, and anchor the units. 2

3 Transport prefabricated parts to construction sites for assembly and installation. Drill and punch holes in metal, for screws, bolts, and rivets. Soft Skills Critical Thinking Judgment and Decision Making Time Management Mathematics Active Listening Coordination Monitoring Reading Comprehension Speaking Critical Thinking Accommodations for Learning Differences These lessons accommodate the needs of every learner. Modify the lessons to accommodate your students with learning differences by referring to the files found on the Special Populations page of this website. Preparation Provide examples of the different types of common seams. Provide examples of completed projects. Prepare materials and equipment for students to make the projects. References Webster s new compact office dictionary (2003). New York, NY: Houghton Mifflin Harcourt Publishing Co. Instructional Aids Common Seam Identification Sheet #1 Common Seam Identification Sheet #2 Common Seam Identification Sheet #1 Answer Key Common Seam Identification Sheet #2 Answer Key Small Sheet Metal Box Plan Common Sheet Metal Seams Assignment #1 and #2 Common Sheet Metal Seams Assignment #1 and #2 Rubric Introduction 3

4 The purpose of this lesson is to help students understand and use various mounting procedures and cutting operations in the lab. Show o The different examples of common sheet metal seams. Ask o Which hand tools could you use to develop these seams and helms? Say o o When you begin working with the sheet metal tools and equipment, remember that it has sharp edges and will cut you. Always wear your Personal Protective Equipment (PPE) and be careful. Ask o What machines or equipment might you need to develop these seams? Outline MI OUTLINE I. Introduction A. Terms B. Sheet metal tools C. Equipment D. Safety E. Assignment NOTES TO TEACHER The teacher will show an example of the different types of seams and the box project for the students to examine. II. Terms A. Seam B. Helm C. Flange D. Wire rolled edge E. Flat lapped seam F. Corner lapped seam G. Flat locked seam H. Grooved locked seam I. Grooved corner seam J. Standing edge seam Students will complete the Common Seam Identification Sheets #1 and #2 while watching the Common Sheet Metal Seams slide presentation. The sheets will be turned in for a grade. Begin slide presentation. 4

5 MI III. IV. OUTLINE Tools and Equipment A. Tin snips B. Hand seamer C. Hand groover D. Sheet metal shear E. Spot welder F. Box and pan brake Safety A. Sharp edges will cut you B. Always wear Personal Protective Equipment (PPE) V. Assignments 1 and 2 A. Construct eight sheet metal seam and helms examples B. Construct small sheet metal box based on the Small Sheet Metal Box Plan VI. Assessment A. Common Sheet Metal Seams Identification Worksheet B. Seams Assignment Rubric C. Sheet Metal Box Assignment Rubric Multiple Intelligences Guide NOTES TO TEACHER Definitions of different seams (Slides 2-11) Tools, equipment, and safety (Slides 12-21) Assignments and rubric (Slides 22-34) Distribute the Small Sheet Metal Box Plan and the Common Sheet Metal Seams Assignment #1 and #2, and have students complete the assignments. Students will refer to the Small Sheet Metal Box Plan to construct the box. Grade the assignments with the Common Sheet Metal Seams Assignment #1 and #2 Rubric. Existentialist Interpersonal Intrapersonal Kinesthetic/ Bodily Logical/ Mathematical Musical/Rhythmic Naturalist Verbal/Linguistic Visual/Spatial Application Guided Practice The teacher will observe the students constructing the various types of sheet metal seams. 5

6 Independent Practice The students will complete the Sheet Metal Box project. Summary Review The students will be able to describe the different types of sheet metal seams and where they are used. Informal Assessment The teacher will evaluate the students as they safely work in the lab. Formal Assessment Seams Identification Sheet Seams Assignment and Rubric Sheet metal box Assignment and Rubric Evaluation Enrichment Extension The students will select and develop other projects using sheet metal seams learned in this lesson. 6

7 Name Date Period Common Seam Identification Sheet #1 Complete the definition for the sheet metal terms (1-6) in the blanks provided. 1. Seam 2. Helm 3. Flange 3. Wire Rolled Edge 4. Flat Locked Seam 5. Grooved Locked Seam 6. Standing Edge Seam 7

8 Name Date Period Common Seam Identification Sheet #1 Answer Key Complete the definition for the sheet metal terms (1-6) in the blanks provided. 1. Seam These are joints formed by two pieces of metal, overlapped and held in place by spot welds, rivets, or bends. 2. Helm This is the edge of a piece of metal that is folded over on itself for strength and smoothness. 3. Flange This is an edge folded to a 90 angle to make a corner or part of a seam. 3. Wire Rolled Edge This is the edge of a piece of metal that is wrapped around a piece of wire. 4. Flat Locked Seam The edges are folded over and slid together to lock the seam. 5. Grooved Locked Seam The edges are folded over and slid together. A hand groover is used to flatten the seam to lock it together. 6. Standing Edge Seam A seam used in roofing to seal the edges of the metal panels. 8

9 Name Date Period Common Seam Identification Sheet #2 Name the sheet metal seam shown in each picture (1-6) under each picture shown

10 Name Date Period Common Seam Identification Sheet #2 Answer Key 1. Standing Seam 2. Helm 3. Flange 4. Flat Locked Seam 5. Lapped Seam 6. Grooved Locked Seam 7. Corner Lapped Seam 8. Single Bottom Seam Grading key: 0 = = 88-2 = 75-3 = 63-4 = 50-5 = 38-6 = 25-7 = 13-8 = 0 10

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12 Name Date Period Common Sheet Metal Seams Assignment Rubric Assignment 1 Rubric Develop eight examples of different sheet metal seams and helms. Mount them on a suitable backing with each example labeled. Using (eight or more) 3 X 5 pieces of sheet metal, produce the following: o ¼ helm o Corner lapped seam o Flat locked seam o Grooved locked seam o Standing seam o Three more seams of your choice Example # Name of Seam Smooth Bend (3 pts) 1 ¼ helm 2 Corner lapped seam 3 Flat locked seam 4 Grooved locked seam 5 Standing seam Correct Development (8 pts) Label (4 pts) Total Total Assignment 2 Rubric Small Sheet Metal Box Points 1. The box is the size specified Yes (12 points) No (0 points) in the plans. 2. The seams are the correct size. (4 seams; 4 points for each smooth bend) 3. The helms are the correct size. (4 helms; 4 points for each smooth bend) 4. The seams are correctly bent. (4 seams; 2 points for each smooth bend) 4. The helms are correctly bent. (4 helms; 2 points for each smooth bend) 5. The bends are smooth. (8 bends; 5 points for each smooth bend) Total Comments 12