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Computer Numerical Control (CNC) machining is a manufacturing process in which pre-programmed computer software controls the movement of tools and equipment - Leaving Cert Engineering - Question c - 2022
Question c
Computer Numerical Control (CNC) machining is a manufacturing process in which pre-programmed computer software controls the movement of tools and equipment. (i) Ex... show full transcript
Worked Solution & Example Answer:Computer Numerical Control (CNC) machining is a manufacturing process in which pre-programmed computer software controls the movement of tools and equipment - Leaving Cert Engineering - Question c - 2022
Step 1
Explain, with the aid of a diagram, the term 3-axis CNC machining.
Answer
3-axis CNC machining refers to machines that operate in three dimensions, such as milling machines and 3D printers. In this context:
- The x-axis and y-axis represent the first two dimensions (horizontal movement), while the z-axis represents the third dimension (vertical movement).
- In a typical graphic representation:
y axis
|
| * (Tool)
| /
| /
| /
| /
|/____________ x axis
|
|
|
| z axis
Here, the x and y denote width and height respectively; the z denotes depth. This multi-axis movement enables CNC machines to create complex shapes and designs.
Step 2
Describe the following CNC terms: - Simulation;
Answer
CNC simulation tools are mathematical applications designed to predict the behavior, performance, and outcome of programmed manufacturing processes. They facilitate testing and verifying the CNC program, which is usually written in G-code, before sending the instructions to the machine.
These tools help ensure integrity by identifying potential issues that could damage physical components, thereby optimizing the entire process.
Step 3
- Tool offsets.
Answer
Tool offsets refer to the programming done on a CNC machine with respect to the center point of the cutter. They are defined as the set of values that indicate where the center point of the cutter is relative to the correct position for cutting a workpiece using a specific tool.