Difficulty: Easy
Correct Answer: combination die
Explanation:
Introduction / Context:
Press tools are classified by how many and what type of operations they perform per stroke and per station. Knowing the differences among simple, compound, progressive, and combination dies is essential for process planning and die selection.
Given Data / Assumptions:
Concept / Approach:
A combination die performs cutting and forming in one station in one stroke. By contrast, a compound die performs two or more cutting operations at one station, while a progressive die performs two or more operations across multiple stations as the strip progresses. A simple die executes a single operation per stroke.
Step-by-Step Solution:
Identify the presence of both cutting and forming in a single station.Match this to the definition of a combination die.Exclude compound die (only cutting ops) and progressive die (multiple stations).Confirm answer as combination die.
Verification / Alternative check:
Typical example: blank-and-draw combination die that blanks a disc and immediately draws it into a cup in the same station.
Why Other Options Are Wrong:
Simple die: one operation only.Progressive die: multiple stations along the feed path.Compound die: multiple cutting operations only, no forming.
Common Pitfalls:
Confusing “compound” with “combination” due to similar wording; remember “combination” mixes cutting and forming.
Final Answer:
combination die
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