CAD for tooling: which is a major benefit of using CAD specifically in tool and die design workflows?
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AProduct design always accounts for one-half of total engineering cost
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BTool motions can be checked for interference between the tool and the workpiece before build
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CIt guarantees better coordination in materials handling in every case
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DIt simplifies trial-and-error by eliminating the need for testing entirely
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ENone of the above
Answer
Correct Answer: Tool motions can be checked for interference between the tool and the workpiece before build
Explanation
Introduction / Context:Computer-aided design (CAD) transforms tooling by enabling virtual checks before committing to fabrication. Collision detection and interference studies are key capabilities for jigs, fixtures, molds, and NC toolpaths.
Given Data / Assumptions:
- We are focused on tool design, not generic product styling.
- Interference checking reduces rework and scrap.
- CAM simulation often accompanies CAD models.
Concept / Approach:With accurate assemblies and kinematic definitions, engineers simulate tool travel, clearances, and clamping. CAD/CAM systems flag collisions, gouges, and near-misses so designers can adjust tool geometry, fixtures, or operations. This saves time and cost compared to discovering issues during machining or try-out.
Step-by-Step Solution:Model the tool, workpiece, and fixtures in CAD.Run motion/path simulations and collision checks.Revise design until no interference remains, then release to manufacturing.
Verification / Alternative check:Common CAM workflows (toolpath verify, machine simulation) are built around preventing interference, underscoring this benefit.
Why Other Options Are Wrong:(a) Cost fractions vary by industry; not a CAD benefit. (c) Materials handling coordination may improve, but it is not guaranteed. (d) CAD reduces trial-and-error but does not eliminate the need for validation.
Common Pitfalls:Using incomplete models (missing fasteners/fixtures); ignoring machine kinematics that affect reach and collisions.
Final Answer:Tool motions can be checked for interference between the tool and the workpiece before build