Working Drawings — Worm Gears Representation On production working drawings for worm gears, is it common practice to omit individual tooth detailing and show the gear blank conventionally with notes specifying tooth data and standards?

Introduction / Context:
Worm gearsets consist of a worm (screw like) and a worm wheel. Because tooth forms are standardized and generated by the mating geometry and tooling, production drawings typically avoid clutter by representing the gear blank outline and providing notes that fully define tooth parameters and applicable standards for manufacture and inspection.

Given Data / Assumptions:

• Tooth form is controlled by specification (module/DP, pressure angle, lead, helix).
• Accuracy, backlash, and contact requirements are handled by toleranced notes.
• Detailed tooth depiction is unnecessary for fabrication or inspection setup.

Concept / Approach:
Clear working drawings balance legibility and completeness. Showing every tooth increases visual noise without adding actionable information, since machining/inspection references the numerical data and standards rather than a literal drawing of each tooth. Therefore, a conventional representation of the blank plus comprehensive notes is preferred practice.

Step-by-Step Solution:
1) Draw gear blank geometry (ODs, faces, hubs, keyways).2) Provide worm gear data (module/DP, lead, pressure angle, gear ratio).3) Specify accuracy grade, backlash, heat treatment, and inspection method.4) Reference the governing AGMA/ANSI standards in notes.

Verification / Alternative check:
Manufacturers commonly request data sheets rather than pictorial teeth, confirming that numeric definitions and standards control the outcome.

Why Other Options Are Wrong:
Incorrect contradicts shop practice. Prototype/academic only restrictions are unfounded. Partially correct understates that omission of individual teeth is the norm, not an exception.

Common Pitfalls:
Omitting critical notes (lead tolerance, runout); failing to show datums and key seating details on the blank.

Final Answer:
Correct