SHS3 Manufacturing Engineering · Semester 2 Week 9: Manufacturing Processes

Lesson notes

Learning Objectives

Indicator: 3.3.2.LI.1 - Discuss the fundamentals of material removal processes and principles of operation of the center-lathe machine.

By the end of the lesson, learners can:

Define material removal processes and classify them into conventional machining, abrasive processes, and non-traditional machining.
Identify the major parts of a center-lathe machine and state the function of each part.
Explain the working principle of the center-lathe machine, including how the workpiece rotates against a stationary cutting tool to remove material.
Describe the basic cutting parameters (cutting speed, feed rate, and depth of cut) that affect material removal on a lathe.
Discuss safety precautions and good work habits to observe when operating a center-lathe machine.

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Curriculum details

Strand: Manufacturing Tools, Equipment and Processes (Strand 3)
Sub-strand: Manufacturing Processes (3.2)
Content standard: 3.3.2.CS.1 - Demonstrate understanding of material removal processes using conventional machining processes. 3.3.2.LO.1 .1.1 Explain the working principles of a center-lathe machine and use the lathe machine to perform a simple material removal process.
Indicator: 3.3.2.LI.1 - Discuss the fundamentals of material removal processes and principles of operation of the center-lathe machine.
Suggested placement: Semester 2, Week 9 (Week 29 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 95

Exemplars (from the NaCCA curriculum)

Research-Based Learning: Learners in mixed-ability groups read from the library on material removal processes such as conventional machining, abrasive processes and non-traditional machining. Learners share their research with the class.
Experiential Learning: Show learners videos of a lathe machine being used to manufacture a component. Take learners on a tour to a manufacturing industry to observe the operation of a center-lathe machine. Learners share observation with the class.
Talk for Learning: A learner leads the class to discuss material removal processes using the center-lathe machine. Structure learners' contributions using mind maps or concept maps.
Teaching and Learning Materials:
- * Educational tour * Library resources
- * Internet access * Textbooks
- * Entre-lathe machine * Videos of centre-lathe machine performing turning
- Drilling and milling operations.
Assessment (3.3.2.AS.1). The document marks these depth-of-knowledge levels for this indicator: Level 1 Recall; Level 2 Skills of conceptual understanding.