文档介绍：Lean Manufacturing 精益生产 Ford Motor China Sourcing Office 福特汽车中国采购中心
First Time Through Calculation (FTT)
Definition:
First Time Through is the percentage of units plete a process and meet quality guidelines the first time without being scraped, rerun, retested, diverted for off-line repair, or returned. It is a measure of the quality of the manufacturing process.
定义:
首次通过率是指一次性完成一个生产过程并且满足质量要求的零件的百分率, 不包括报废,返工,再测试,下线修理或返回。FTT 用于衡量制造过程的质量。
FTT=
Units entering process-(scrap+reruns+retests+repaired off-line+returns)
Units entering process
First Time Through Calculation (FTT)
单工序:
进入数量= 1000
报废= 10
返工= 15
测试= 5
下线修理= 0
FTT% = 1000 -(10+ 15+ 5+ 0)
1000
FTT% = %
多工序:
FTT (工序1) = %
FTT (工序2) = %
FTT (工序3) = %
最终检验(工序4) = %
总FTT% = % X % X % X %
Total FTT% = %
Total Dock To Dock Calculation (DTD)
Definition:
Dock to Dock is the elapsed time between the unloading of raw materials and the release of finished goods for shipment. DTD measures how fast raw materials are converted to finished goods and shipped. It is a measure of the speed of material through the plant, not the speed of the processes.
定义:
DTD指从原材料到发运产品之间的总运转时间间隔。DTD用于测量原材料转化成成品发运的速度。也就是指材料通过工厂的速度,而不是加工工艺的速度。
DTD (Single Operation) = Total Units of Control Part
End of line Rate
DTD (Multiple Operation)= DTD(OP 1)+DTD(OP 2)+…
End of line Rate
Total Dock To Dock Calculation (DTD)
The End of Line Rate is calculated off the last operation in the manufacturing line for a product:
总产量= 730 (最终工位)
生产时间= 12小时(正常生产时间10小时+加班时间2小时)
End of Line Rate = 730/12 =
各区域数量= 原材料+半成品+最终产品
原材料= 300
工序1 = 181
工序2 = 3
工序3 = 3
最终产品= 200
DTD(原材料) = 300/ =
DTD (工序1) = 181/ =
DTD (工序2) = 3/ =
DTD (工序3) = 3/ =
DTD (最终产品) = 200/ =
Total DTD= + + + + =
Overall Equipment Effectiveness (OEE)
Definition:
OEE is bination of three different calculations. It is a measure of the avail