Question

Match the following with reference to the CNC machine and its minimum number of axes available in the machine.

• A. P – i, Q – ii
• B. P – ii, Q – i
• C. P – i, Q – iii
• D. P – ii, Q – iii

Hint:

CNC machines can have different numbers of axes depending on the complexity of the machine and the operations it is designed for. A turning center typically has 2 or 3 axes, while machining centers (like CNC vertical mills) usually have 3 or more.

Answer 1

The Correct Option is B

In this question, we are asked to match the type of CNC machine with the minimum number of axes available in that machine. Let's analyze the two types of machines mentioned:
- P – Turning center (CNC Lathe): A turning center, typically referred to as a CNC lathe, generally uses two axes for basic turning operations (X and Z axes). However, a standard CNC lathe typically has a minimum of 3 axes for advanced turning and milling operations (X, Y, and Z). Hence, for this type of machine, the minimum number of axes is 3, which matches with option i.
- Q – Machining center (CNC Vertical milling): A CNC vertical milling machine is capable of operating on 3 axes (X, Y, and Z) for general milling applications. However, some advanced versions might have more axes (such as 4 or 5 axes) for more complex operations. The minimum number of axes for a standard CNC vertical milling machine is 3, but it can often be described as having a minimum of 2 axes for simpler vertical milling operations. Therefore, the correct matching for this type of machine is ii, corresponding to 2 axes.
Thus, the correct matching is P – ii, Q – i, which corresponds to option (B).