作为全球两大热门管理方式6sigma与lean模式, 近年来国内众多大型企业先后导入这些管理模式, 取得的实际改善成果是多了一堆虚伪的6sigma或lean改善报告? 还是产生了实际的改善成果, 或许只有那些企业的CFO们知道了, 在2006年, 美国生产运营管理权威机构—美国运营管理协会APICS抽查了21家企业的100多个改善项目, 其中有11家导入了6sigma, 4家企业导入了lean, 6家企业在导入前面两种管理模式后,又导入了TOC管理模式, 结论得出TOC的改善效果是6sigma的20倍, 是lean的9倍, 并将研究结果在2006年五月的APICS杂志进行发表. 相关原文请参考下面网站链接:
 
(A study released in the May, 2006 APICS magazine demonstrates that TOC is twenty times as effective as Six Sigma, and nearly ten times more effective than lean at causing cost savings. I find this remarkable result especially interesting because cost savings are a side benefit of TOC...TOC focuses on increasing Throughput.
This is the only scientific double-blind study of its kind performed "in the wild", i.e. in actual business plants. The authors summarize the results of over 100 improvement projects, where:
11 plants applied Six Sigma
4 plants applied Lean
6 plants applied TOC, Lean and Six Sigma
 
The results are unequivocal:

A little further analysis shows:
If we assume linearity (i.e. that the treatments are additive), we can estimate TOC alone. The 11 six sigma plants saved 0.63% per plant, and the 4 Lean plants saved 1.5% per plant. So, we subtract 6x(.63+1.5) = 13% for the 6 plants that did the combined, the estimated TOC alone savings is 76%, or ~13 % per plant. So, TOC is twenty times more effective than six sigma, and around nine times more effective than lean.
 
Lean Project Management (LPM), API's extension of CCPM, takes the same approach as the workers in these plants: combining the synergistic effects of the three improvement approaches. The combination caused savings of 14% (of the total saved) per plant, or 24 times more effective that six sigma alone, and ten times Lean alone.
Pirasteh, R. and Farah, K. (2006). Continuous Improvement Trio: The top elements of TOC, lean, and six sigma make beautiful music together. APICS magazine, May, 2006 pp. 31-36

　　【联系咨询】

　　联系电话：010-62258232　62278113　13718601312　13261332770

　　联 系 人：陈小姐　林先生　李先生　陈先生

　　传真号码：010-58850935  

　　电子邮件：71peixun@163.com