第六十七篇 Comparing Lean and Six Sigma

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Comparing Lean and Six Sigma
精益和六西格玛的比较



Comparison Lean and Six Sigma reveal both as change initiatives aimed at reducing or eliminating waste. So what is the difference? Read on to find out the difference between Lean and Six Sigma.
精益和六西格玛两者比较显示:两者积极改变的目的在于减少或者消除浪费。那么他们两者之间的不同是什么呢？继续读下去找出精益和六西格玛之间的不同。

Comparison: Lean and Six Sigma
精益和六西格玛的比较

Comparison between Lean and Six Sigma reveals that Lean is a philosophy of identifying and eliminating non-essential and non-value adding activities to streamline production and thereby improve quality, whereas Six Sigma is a change management methodology to manage, improve, and or reinvent business processes to limit process variations to 3.4 defects per million opportunities and thereby improve quality.
精益和六西格玛之间的比较显示：精益是对流水线生产进行识别和消除非本质的和没有附加价值的活动从而改进质量的一类哲学，六西格玛是来对经营、改进、和（或者）彻底改造业务流程来限制过程变差到每百万机会有3.4个缺陷，来改进质量。

The fundamental difference between Lean and Six Sigma is that “Lean” is a philosophy and Six Sigma is a program. Lean attempts to inculcate an organizational culture change and permanent behavior change among employees, to identify and eliminate waste, whereas Six Sigma is a methodological process intervention that does not attempt to change the organizational culture or attempt a permanent behavioral change among employees.
精益和六西格玛两者之间根本的不同在于：精益是一种哲学而六西格玛是一种程序。精益企图在员工之间灌输一个组织文化改变和永久的行为来改变，来识别和消除浪费。而六西格玛是一种方法过程导入到那些不想组织文化改变或者不愿意永久的改变员工的行为。

Approach方法

"Lean" identifies the need for a process or activity first and if the activity adds value tries to improve on such activity through improved process flow and enhancing productivity. Six Sigma focuses specifically on eliminating process variations in output without looking into the merits of such processes in the scheme of things.
精益首先识别一个过程或者活动的需求,并且如果活动附加值试图改进这样的活动通过改进工艺流程和提高生产效率。六西格玛特别的关注消除过程变差输出没有调查计划表中事情的这些过程优点。

Lean, as the name suggests breaks down processes to bare bone essentials under its guiding principle that any activity or function that does not add value constitutes waste that needs elimination.
精益，顾名思义分解过程到必需品在它的指导原则下，任何活动或者功能，不增加价值构成浪费，需要消除。

Six Sigma, on the other hand does not question whether the activity or function adds value and works under the guiding principle that any variation in existing process or output is waste.
六西格玛，另一方面不询问是否活动或者功能附加价值，在任何的变差在目前的过程或者输出是浪费的指导原则下工作。

Lean is continuous and on-going approach, under the assumption that the day-to-day changes in technology, external environment and other factors always leave room for improvement. Six Sigma, on the other hand is a project-based approach, and the Six Sigma project group disbands on achieving the set change objectives, leaving metrics or control charts to prevent roll back.
精益是连续和持续的方法，根据假设技术、外部环境和其他因素日常的变化总是为改进留出余地。六西格玛，在另一方面是基于项目的方法，六西格玛项目组在达到规定的改进目标解散，留下指标和控制图来阻止回滚。

Ownership所有权

A major difference between Lean and Six Sigma pertains to the ownership of the concepts.
精益和六西格玛之间最大的区别与理念的所有权有关。

Lean aims at continuous improvement across the entire value-stream of operations by encouraging and empowering the entire workforce to identify and eliminate waste in their sphere of activity. It is an on-going process ingrained to operations of the firm, and requires adoption by the entire workforce and in all aspects of the company operations for effectiveness.
精益针对持续改进通过整个运营的价值流，通过鼓励和授权全部的劳动力来识别和消除浪费在他们活动的范围。它是持续改进的对公司的运营，并要求所有的雇员和整个公司运营效果的各个方面采用。

Six Sigma, on the other hand is a methodical approach that aims to eliminate variations in a specific project or area of operations, and the results remain confined to such specific area instead of permeating to the entire organization. The onus on implementation of Six Sigma falls on special purpose teams such as inventory reduction team, manufacturing scrap reduction team and others formed specifically for the purpose. Such teams have Green Belts led by a Black Belt or Master Black Belt, who remain exclusively responsible for the implementation of Six Sigma. The Six Sigma team may choose to involve other sin the implementation part at their discretion.
六西格玛。另一方面是一个系统的方法，旨在在一个特定的项目或者操作区域消除变异，结果仍局限于特定的区域而不是渗透到整个组织。实施六西格玛的责任落在特定目的的团队，就像库存减少团队，制造废物减少团队和其他专门的组织。这样的团队有黑带带领的绿带或者仍然专门负责实施六西格玛的黑带大师。六西格玛团队可以挑选涉及其他过失执行部分在他们判断力。

Procedure程序

Lean works by transferring knowledge and implementing the culture of a learning organization across the board to bring about changes in business strategy, structure, and processes. The implementation of lean is through tools such as Value Stream Mapping, Five S, Kanban, and poka-yoke or error-proofing, and through concepts such as Just in time manufacturing.
全面的通过转移知识和执行一个学习型组织的文化带来改变，在商业战略、结构和流程的精益工作。精益的执行是通过价值流程图、5S、看板和防错法或者预防差错，和即使生产这样的理念。

The implementation of Six Sigma is through the DMAIC (Define, Measure, Analyze, Implement, and Control) or DMADV (Design, Measure, Analyze, Design, Verify) procedure and using tools such as Failure Mode Effective Analysis (FMEA) and Analysis of Variance (ANOVA) . The Six Sigma team identifies root causes for variance, test hypotheses for possible solutions, and validate the analysis, before implementing the solution and monitoring for effectiveness.
六西格玛的执行是通过六西格玛改进（定义、测量、分析、执行和控制）或者六西格玛设计过程模式程序和使用像失效模式和效果分析和方差分析这样的工具。在执行解决方案和效果监控之前，六西格玛小组识别变异的根本原因，可能的解决方案的假定测试、和分析的确认。

Lean Six Sigma精益六西格玛和

Both Lean and Six Sigma have their uses and very often go hand in hand. While Six Sigma remains more eared to solving pressing customer needs, Six Sigma alone cannot improve overall process speed or maximize returns on investment for investors.
精益和六西格玛两个有他们的用途，并且往往齐头并进。在六西格玛仍然来解决紧急的客户需求，六西格玛单独不能改进全部的过程速度或者最大化投资者投资回报。

Lean Six Sigma (LSS) tries to combine the advantages of these two approaches and minimize the weakness of both. The Lean Six Sigma methodology entails using lean methodologies to identify and remove non-value adding activities and processes, and then applying Six Sigma methodologies to identify and eliminate process variation.
精益六西格玛试图将这两者的优点结合起来，最大限度的减少两者的弱点。精益六西格玛方法需要使用精益的方法来识别和除去没有附加价值的活动和过程，然后运用六西格玛方法来识别和消除过程变异。

The tools used for the implementation of Lean and Six Sigma often overlap. 5S, for instance while a common Lean tool also finds uses in the Control phase of a Six Sigma DMAIC project.
用于执行精益和六西格玛的工具经常重叠。5S,一个普通的精益工具同样发现用于六西格玛改进的控制阶段。

In comparison, Lean and Six Sigma suggest that while fundamental differences distinguish these two concepts, they nevertheless remain complimentary
通过比较：精益和六西格玛建议本质不同是两者的理念，他们仍然有相同之处。