"Expedited delivery" is not to rush the schedule, but to front-load the risk and parallelize the validation. In this paper, we give a set of accelerated process from the drawing to the mass production reusable, taking into account the delivery time and quality.
1. Clarifying the objective: how far to expedite the process
- Sampling only (functional verification)
- Small batch pilot production (assembly/reliability)
- Mass production delivery (with stability and traceability)
Different objectives determine whether a mold is needed, whether a soft/fast mold is available, and whether complete validation must be done.
2. 5 pre-movements (most cycle-reducing)
- Drawing Freezing and Critical Dimension Confirmation: Seal Line Related Dimensions Priority Locking
- Material and hardness are selected first: Avoid repeated material testing.
- Structural manufacturability review: mold pulling, chamfering, parting line and burr control
- Synchronization of validation plans: definition of sample size, test items and determination criteria
- Preparation of tooling and assembly conditions: avoiding the "sample made out of the installation can not be"
3. Proofing acceleration strategies
- Rapid prototyping/modular molds: suitable for multiple varieties and small batches
- Process Parallelism: simultaneous advancement of mold processing and material confirmation
- Test fit priority: run assembly and leakage first, then do tightened aging
4. Risk control: the most common pitfalls of expediting
- Dimensioning without compression: leading to unstable seal retention
- Neglect of secondary vulcanization and cleaning: rework of odor/volatiles/contamination issues later in the process
- Changes are not documented: customer audits and traceability cannot be passed
5. Deliverables (recommended to be provided with samples)
- Material Lot Number and COA
- Critical dimensions report (with measurement methods)
- Summary of process parameters (confidential version)
- Test fit and leak verification records
FAQ
1. Can I make a sample first and then fill in the information?
Yes, but you need to agree on the "fill-in milestones" at the time of the project, otherwise the mass production will easily get stuck in the review process.
2. Will expediting lead to a drop in yield?
If the front-end action is sufficient, the yield is more controllable; the real cause of yield decline is "changing while doing and no verification".
