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The vertical CNC milling machine shown is used to produce complex shapes through a process known as a subtractive manufacturing - Leaving Cert Engineering - Question c - 2021
Question c
The vertical CNC milling machine shown is used to produce complex shapes through a process known as a subtractive manufacturing. (i) Explain the term subtractive ma... show full transcript
Worked Solution & Example Answer:The vertical CNC milling machine shown is used to produce complex shapes through a process known as a subtractive manufacturing - Leaving Cert Engineering - Question c - 2021
Step 1
Explain the term subtractive manufacturing in relation to CNC milling.
Answer
Subtractive manufacturing refers to a variety of controlled machining and material removal processes. These processes begin with solid blocks, bars, rods, or other materials, including metals and plastics, and involve shaping these materials by removing portions through various methods such as cutting, boring, drilling, and grinding. In the context of CNC milling, these processes are executed by computer programs that guide the machine to create complex shapes efficiently and precisely, allowing for intricate designs that would be difficult to achieve manually.
Step 2
Describe each of the following CNC terms: Automatic tool change
Answer
Automatic Tool Change (ATC) is a feature in CNC machines that allows for the automatic selection and changing of tools during the machining process. This capability enhances the machine's efficiency by minimizing downtime, as it can switch tools without manual intervention, thus allowing for continuous production while optimizing the tool carrying capacity of the machine.
Step 3
Describe each of the following CNC terms: Tool offsets
Answer
Tool offsets are specific values that adjust the position of the cutting tool relative to the workpiece. These offsets account for variations in tool geometry, such as diameter and length, ensuring that the center point of the cutter is correctly aligned for precise cutting. By using tool offsets, CNC machines can maintain accuracy and consistency in the machining process, accommodating different tools used in production.