Machine tool classification: The common tool used on the lathe, shaper, and planer for material removal is a
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Asingle point cutting tool
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Btwo point cutting tool
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Cthree point cutting tool
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Dmulti-point cutting tool
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Ebroach only
Answer
Correct Answer: single point cutting tool
Explanation
Introduction / Context:Lathe, shaper, and planer are classic machine tools that use a single cutting edge to remove material in a controlled manner. Recognizing the tool type clarifies kinematics and surface generation in these processes.
Given Data / Assumptions:
- Conventional turning (lathe), shaping, and planing operations.
- Standard HSS/carbide-tipped single-point tools.
- Continuous chip formation in ductile materials under steady cutting.
Concept / Approach:A single point cutting tool has one major cutting edge (plus auxiliary edges) and is used in operations where the tool or work executes one principal motion: rotation for turning, linear reciprocation for shaping/planing. Milling and drilling typically use multi-point tools; broaching is also multi-point.
Step-by-Step Solution:
Identify machines: lathe/shaper/planer → single-edge geometry.Confirm that operations generate surfaces by straight-line or helical paths using one cutting edge.Conclude the common tool type is single point.Verification / Alternative check:Tooling catalogs and manufacturing texts classify turning, shaping, and planing under single-point cutting processes.
Why Other Options Are Wrong:
- Two- or three-point tools are not standard categories for these machines.
- Multi-point tools are typical for milling, drilling, reaming, broaching, not the machines cited.
- Broach is multi-tooth and not used on the listed machines in typical practice.
Common Pitfalls:Assuming “multi-point” because chips may originate from more than one micro-edge; macroscopically there is one active major edge.
Final Answer:single point cutting tool