SIM08 · 节拍 / 客户需求给产线定速度SIM08 · Takt / Customer demand sets the line pace
客户每 10 秒要一件，产线做得越快就越好吗？If the customer needs one part every 10 seconds, is a faster line always better?
节拍时间 = 可用生产时间 ÷ 客户需求量，它由客户定，不是车间拍脑袋定。这里客户固定每 10 秒取一件：产线慢了会缺货，快了会堆成品；只有稳稳跟上节拍，才不会把“做得快”变成过量生产。公式与 EPE、SMED 的联动见 F50 教学页。Takt time = available production time ÷ customer demand. The customer sets it; the plant does not. Here the customer collects one part every 10 seconds. A slower line misses demand, while a faster line builds finished goods. The target is to keep pace without turning speed into overproduction. See F50 for the link between Takt, EPE, and SMED.
🎬 看顶部节拍环：每转一圈，客户就来取一件🎬 Watch the Takt ring: every full turn triggers one customer pickup
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10sTAKT
绿<1 节拍Green <1 Takt琥珀=成品积压Amber = excess finished goods红闪=缺货Red flash = stockout
💡 跑完看数据：快了堆库存，慢了交不出，跟上才刚好💡 Run it, then read the numbers: faster builds inventory, slower misses demand, on-Takt stays stable
三档均由同一 DES 的 stats() 计算All three paces come from the same DES stats()| 产线节奏Line pace | 120 秒产量Output / 120 sec | 成功取货Filled pickups | 期末积压Ending inventory | 缺货次数Stockouts |
|---|---|---|---|---|
| 快 · C/T 7sFast · C/T 7s | — | — | — | — |
| 准 · C/T 10sOn Takt · C/T 10s | — | — | — | — |
| 慢 · C/T 13sSlow · C/T 13s | — | — | — | — |
稳态口径：三工位在计时前已填满管线，排除首次填线的启动损失；这样读到的缺货和积压只来自 C/T 与客户节拍的差，不偷换问题。Steady-state boundary: the three-station pipeline is full before the clock starts, removing startup fill loss. Stockouts and inventory therefore come only from the gap between cycle time and customer Takt.
🎯 节拍规则🎯 Takt rule
节拍不是让人拼命加速，而是让全线按客户需要的速度同步。Takt is not a command to work faster. It synchronizes the whole line to the customer's rate.
⚠ 常见误区⚠ Common mistakes
✗ 越快越好✗ Faster is always better
✓ 快于节拍就是过量生产，是最恶的浪费。✓ Faster than Takt is overproduction—the waste that creates the others.
✗ Takt 是我们定的✗ We choose the Takt
✓ Takt = 可用时间 ÷ 客户需求，由客户定。✓ Takt = available time ÷ customer demand. The customer sets it.
✗ 每站按自己最快干✗ Let every station run as fast as it can
✓ 全线按同一节拍同步，局部超产只会把在制品推给下游。✓ Synchronize the line to one pace. Local overproduction only pushes WIP downstream.