Quality Architecture: A Concept for Quality Manufacturing
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Requirements
Design Rules Develop Plan/Drawings
Modify r (^
Design ^ N Review JV*— —1 Input Accept Resource & Implement
Figure 1. How you build quality architecture.
The stability of measurement systems must be maintained and traceable to standards. The primary use of a measurement system must be for process feedback. A secondary use might be to pass/fail product. Process feedback information should be statistically determined. Process troubleshooting should reside with production. Procedures critical to product requirements should be automated.
Figure 2. Design rule examples.
Then your architect would take these requirements and a set of rules to draft drawings for building your house. These rules would include such stipulations as doors per room, building codes, standard window and door sizes, and placement of wall outlets, etc. The architectural drawings are the final reviewable product of the stated requirements and these design rules. These drawings are then reviewed to ensure that all requirements and design rules have been met. For example, was there closure on the desired square footage and the dollars, is the placement of the windows appropriate, etc.? Items that do not close result in a modification to the original design. After closure, the design is then put into a project format, timing of the subprojects (plumbing, framing, and so on) are developed, and resourcing is done. An identical method is used to design quality architecture into a manufacturing process. First, the quality requirements for the project are defined. They are required to be quantitative and measurable, and later serve as the metric for the team to measure its success. These might include Cpk (a statistical evaluation of the process distribution versus the specifications) targets, selections, specifications, and so on. Next, the team uses these requirements with design rules to design the project quality architecture. Some examples of these design rules are included in Figure 2. Each manufacturing process or plant not only would have these rules, but might have design rules unique to their needs, processes, and manufacturing and working conditions. The quality architecture is visually depicted like a flow chart, block diagram, or a drawing for a computer architecture. This drawing then is presented for review and modification. Any required modifications are done, and the quality architecture for the project is approved by the project team, receivers, and management. This drawing is used to define the quality architecture resourcing and milestones for the project. This design process allows the entire project team, including the receivers, to focus on the quality system requirements early in the design phase of a project. It allows the quality system requirements to be defined in a visual method and reviewed as electrical or mechanical drawings are. The design process also allows multi-functional inputs and buyoffs. Because of early buyoff by receivers, the quality architecture design enables easier transfer of processes fro
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