DESIGN DRAFTER (ELECTRICAL-MECHANICAL-HYDRAULIC)

Anonymous

National (OA)

Documents

Individual state requirements may vary. Please contact your local apprenticeship office to ensure this version is suitable to your state’s requirements.

Work Process Schedule

Work Process Content

On the Job Training

Anonymous

10K

OJT hours

Basic Drafting Concepts and Sketching

1.5K

Lettering and format, drawing methods, bill of materials, wire lists, free-hand sketching, dimensioning – decimal, metric
Drawings – release systems; production engineering and experimental drawings; types – assembly, schematics, proposal, detail, specification and source control, installation, layout production
Layouts – (Hydraulics) manifold, weight contouring, systems and linkages, seals; (Electronics) circuit boards, cabinet design, shielding, service, connectors, schematic diagrams, (logic, discrete components), interconnections (external of units)

Basic Detailing

1.5K

Materials selection, engineering notes; springs-materials, rate and modulus, loads, calculations; (Electronics) art copy-lettering, typesetting, creating art copy, panel, and chassis

Printed Circuit Boards (Electronics) Layout

Single-sided, double-sided, and multi-layer; layout restrictions, master drawings; drawing layouts for symmetry, spacing circuit flow, placement of identification, assemblies
Wire routing drawings, cable assemblies, wiring harness, wire lists
Machining of circuit boards – drilling instructions, including hole spacing, sizing, material, and dimensioning

Hydraulic Layouts – Design Standards

Body design and components – spools, bushings, surface finish and materials; design function – null edges and nulling conditions, dimensional control; materials, surface finish and clearances
Hydraulic schematics – systems, closed loop, open loop
Strength of materials – bolt tension (torque); hoop strength; bending vs. shear; stress risers

Machining and Machining Concepts

Machining processes – lathe milling machine, grinders, electrical discharge machines, drilling, NC machining, point-to-point, and continuous path systems; hones and lapping

Fits and Tolerances