Technical Drawings Standard: The Manufacturing Command Center

A 3D model is an idealized concept, but the Technical Drawing is a legal contract between engineering and production. Edelweis adheres to a strict standard that translates complex geometry into clear, unambiguous, and "shop-ready" instructions, eliminating guesswork on the factory floor.

1. Compliance & Drafting Fundamentals

Our drawings are "Language Independent," utilizing symbols to ensure global interpretability:

  • Global Standards: Full compliance with ASME Y14.5-2018 or ISO 1101:2026.
  • Projection Logic: Standardized Third-Angle or First-Angle projection to prevent orientation errors.
  • Sheet Architecture: Unified title blocks with automated metadata synced from PDM.

2. The Anatomy of a High-Fidelity Drawing

View Type Engineering Purpose
Primary Orthographics Defining the overall envelope and principal dimensions.
Section Views Exposing internal features, wall thicknesses, and blind cavities.
Detail Views Magnifying high-precision areas (O-ring grooves, micro-threads).
Auxiliary Views Projecting true-shape geometry for inclined planes.
Isometric Reference Providing a 3D visual anchor for machinist orientation.

3. Annotation & Dimensioning Strategy

Every dimension is placed strategically to support the manufacturing process without redundancy:

Function-Driven
Dimensioning from GD&T Datums to prevent tolerance stack-up across features.
Fits & Finish
Standard hole/shaft fit callouts and explicit Ra surface texture symbols.
Thread Specs
Clear metric/imperial callouts including class, pitch, and depth.

4. Advanced Manufacturing Instructions

  • Heat Treatment: Hardness (Rockwell/Brinell) and depth requirements for surface treatments.
  • Edge Requirements: Default "Break All Sharp Edges" (0.2mm x 45°) or specific stress-sensitive radii.
  • CTQ Flags: Highlighting dimensions requiring inspection records for every production unit.

Technical Directives

Directive Protocol
No "Scaling" Dimensions must be explicitly stated; print scale is for reference only.
Clarity Audit No crossing dimension lines or overlap with hidden lines allowed.
MBD Synchronization 2D drawings serve as control prints for semantic 3D data where applicable.