Manufacturing process identification Which metal-cutting process removes material by pushing or pulling a multi-tooth cutting tool through (or across) a preformed hole or surface to generate accurate profiles in a single pass?

Difficulty: Easy

Correct Answer: Broaching

Explanation:


Introduction / Context:
Broaching is a high-productivity machining process in manufacturing where a toothed tool (the broach) is either pushed or pulled across a workpiece. It is used to produce precise internal and external profiles such as keyways, splines, hex holes, and noncircular shapes in one continuous stroke.



Given Data / Assumptions:

  • The process under discussion uses a multi-tooth tool.
  • Material removal occurs in a single pass with increasing tooth height (rise per tooth).
  • Tool motion is linear (push or pull) rather than rotational.


Concept / Approach:
Each successive tooth on a broach removes a small additional layer of material. The combination of roughing, semi-finishing, and finishing teeth in one tool yields tight tolerances and excellent surface finish without multiple setups.



Step-by-Step Solution:

Identify processes that use push/pull motion with a multi-tooth tool → broaching.Confirm that milling (up/down) uses a rotating cutter, not a push/pull stroke → eliminate.Forming generally plastically deforms metal rather than chips it away → eliminate.Therefore, the correct answer is broaching.


Verification / Alternative check:
Common broaching applications include internal keyways and splines formed in a single stroke, confirming the push/pull nature and multi-tooth action.



Why Other Options Are Wrong:

Up/Down milling: chip removal by a rotating cutter; not a single linear push/pull stroke.Forming: plastic deformation, no chip removal.Slotting: reciprocating single-point cutting, not multi-tooth progressive tool.



Common Pitfalls:
Confusing broaching with slotting or shaping due to the linear motion; the defining difference is the multi-tooth progressive geometry.



Final Answer:

Broaching

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