汽车制造业的DV代表什么？哪个阶段去做？PV代表什么？哪个阶段去做？当下这个节点没几个人可以说的清楚，很多车企包括零部件企业全是草台班子，全是瞎搞的，没几个懂的。DV是用B样品做的，用来验证设计的合理性和耐久实验，在这之前还有A样阶段，用来验证概念。DV没问题之后，才是设计冻结design freeze，进入到C样阶段，全工装阶段，现在全是瞎搞的，搞反的。用C样品全工装的零件做PV实验，PV通过之后才是PPAP阶段，PPAP要做产能压力测试的，产品的成熟度不高，产线的成熟度不高，是无法做PPAP压力测试的，现在没几个企业做的好，懂的人也没几个。汽车行业DV / PV 标准释义（整车零部件通用）1. DV全称：Design Verification 设计验证试样：B样件阶段：A样（概念验证）完成后、设计冻结Design Freeze 之前目的：验证设计合理性、结构强度、耐久、环境、功能等设计层面性能核心：只验设计，不考量量产工艺。2. PV全称：Production Validation 生产验证试样：C样（全工装量产件）阶段：设计冻结完成、全工装量产状态达成后目的：验证量产工艺、制程一致性、批量稳定性、量产可靠性核心：用真正量产模具/设备做出的零件做验证。流程正确顺序。1.A样 → 概念可行性验证2.B样 → DV设计验证3.DV合格 → Design Freeze 设计冻结4.开全工装 → 产出C样5.C样 → PV生产验证6.PV通关 → 启动PPAP7.PPAP含产能爬坡、产线压力测试、量产能力确认
Few people can clearly clarify the correct process at present. Most vehicle manufacturers and component suppliers operate in a non-standard way with confused procedures.DV tests are conducted with B samples to verify design rationality and durability tests, preceded by A-sample phase for concept validation.Only after passing DV can design freeze be confirmed and enter C-sample full tooling phase.Now many companies reverse the process improperly, performing PV tests directly with full-tooled C samples.PV approval is the prerequisite for PPAP submission, which includes production capacity stress testing.Neither low product maturity nor unstable production line condition can support qualified PPAP stress testing, and few enterprises can strictly implement the standard procedure nowadays.