Machine Design Cycle — definition
Machine design cycle describes the sequence of stages, from concept through basic design, detailed design, build, testing and handover, that a piece of custom equipment passes through.
Typical stages include requirements capture, concept and feasibility review, basic engineering, detailed engineering, procurement of components, fabrication and assembly, factory acceptance testing, delivery, installation and commissioning. Stage gates are often used to control risk before committing further budget.
Why it matters to industrial buyers
Mapping the design cycle helps buyers align payment milestones, inspections and change-control points with actual engineering progress.
Key reference points
Stage gates
Reviews at the end of concept and basic engineering are commonly used to freeze scope before detailed design proceeds.
Iteration
Detailed engineering and prototyping stages may iterate multiple times before design freeze on complex machines.
How it is used in practice
A project schedule ties a 30% payment milestone to completion of the basic engineering design stage of the machine design cycle.
Frequently asked questions
Can stages overlap?
Yes, concurrent engineering practices often overlap detailed design and long-lead procurement to compress schedule.
What ends the design cycle?
Formal handover after successful site acceptance testing and commissioning typically closes the design cycle.
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Related terms
Basic Engineering Design
Basic engineering design is the early project phase that establishes process flow, major equipment sizing, layout and technical specifications sufficient to define scope and budget.
Detailed Engineering
Detailed engineering is the project phase that converts basic design outputs into fully dimensioned drawings, control philosophy and component specifications ready for fabrication and procurement.
Factory Acceptance Test (FAT)
Formal verification test conducted at the supplier's manufacturing facility to confirm equipment meets agreed specifications before shipment to site.
Commissioning
Systematic process of testing, adjusting and verifying that installed equipment and systems operate together as designed before handover to operations.
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Reference content only. Global B2B Group is independent of equipment manufacturers and financing institutions; definitions are provided for education and do not constitute engineering, financial or legal advice.