Lesson Notes By Weeks and Term v4 - SHS 3

Manufacturing Tools and Equipment

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  2. Lesson Notes By Weeks and Term v4
  3. SHS 3
  4. Manufacturing Tools and Equipment

Subject: Manufacturing Engineering

Class: SHS 3

Term: 2nd Term

Week: 16

Grade code: 3.3.1.LI.1

Strand code: 3

Sub-strand code: 1

Content standard code: 3.3.1.CS.2

Indicator code: 3.3.1.LI.1

Theme: Manufacturing Tools, Equipment and Processes

Subtheme: Manufacturing Tools and Equipment

Lesson Video

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Performance objectives

Lesson summary

This lesson introduces Computer Numerical Control (CNC) machines, a cornerstone of modern manufacturing. We will move beyond traditional, manually operated tools like hand saws and lathes to understand how computers can control machines to create precise and complex products with incredible consistency. For Ghana's growing industrial sector, from the furniture makers at Anloga Junction in Kumasi to the automotive engineers at Kantanka, understanding CNC technology is vital for improving quality, increasing efficiency, and competing on a global scale. This lesson will demystify CNC, explaining how it works and where it is used right here in our communities.

Lesson notes

2.1 What is a CNC Machine?

CNC stands for Computer Numerical Control. Computer: The machine is controlled by a dedicated computer or a microcontroller. Numerical: The computer uses numbers (coordinates, speeds, feed rates) to guide the machine's movements. Control: The computer precisely controls the position, speed, and action of the machine's tools.

In simple terms, a CNC machine is an automated machine tool that operates based on a pre-programmed set of instructions. Think of the difference between a master carver making an *adinkra* stool by hand and a machine that can carve the exact same intricate pattern perfectly, one hundred times in a row, without getting tired. The manual carver uses skill, experience, and muscle memory. The CNC machine uses a computer program.

Manual vs. CNC Machine: A Core Comparison

Evaluation guide