적시생산시스템 (JIT, Just-in-time)

지식 센터

요약, 포럼, 모범 사례, 전문가 팁 및 정보 소스.


JIT란 무엇인가? 정의

JIT 일본의 Toyota 자동차 조립공장에 있던 Taiichi Ohno에 의해 1970 년대 초기에 개척되었다. JIT 제조업 조직의 철학이다.   JIT는 조립프로세스에서 부품을 필요로 할 때에만 부품을 공급하게 함으로써 낭비를 줄인다. JIT의 중심에 카드를 의미하는 일본어인 간반(Kanban)이 있다. 이러한 간반카드를 부품이 조립/제조 프로세스에서 소모될 때 창고에 보내 부품의 표준수량을 요청한다. JIT는 올바른 부품이 올바른 장소(조립라인의 작업대)에 적시에(just-in-time)에 보내져야 하므로 정밀도를 요구한다. JIT는 주로 수량이 많은 반복적인 제조 프로세스에 사용된다.

JIT의 역사

역사적으로 JIT 철학은 다음 2가지로부터 발생했다:

  1. 생산품질을 개선하려는 일본의 바램. 당시 일본 기업들은 제조품질 특히 자동차 제조에 관련하여 나쁜 평판을 받고 있었다.
  2. Kaizen[카이젠, 개선기법], 또한 지속적인 개선을 위한 일본식 방법.

JIT모델은 재고를 기획부실, 경직성(inflexibility), 잘못된 기계, 품질 문제 등에 대한 변명으로 보았다. JIT의 목표는 재고를 최소화하는 동시에 고객반응의 속도는 높이는 것이다. 재고는 변화하는 고객의 수용에 신속히 대응하는데 도움이 되지만, 어쩔 수 없이 원가가 증가하고 필요한 운전자본이 증가하게 한다.

1990년에 James Womack은 "The Machine That Changed The World"란 책에서 '린생산방식(Lean Manufacturing)'이라는 용어를 소개하였다. 또는 "린 생산 (Lean Production)"이라는 단어로도 불린다. 이러한 접근법의 배경에 있는 원칙은 Toyota의 Ohno가 개발한 기술과 내용이 많이 다르지 않다.

JIT의 관심영역

JIT 행의 일반적인 관심영역은

  • 재고 감소.
  • 더 작은 생산 롯트(lot) 및 배치(batch) 크기.
  • 품질 관리.
  • 복잡성 감소와 투명성.
  • 수평적 조직구조와 권한위임.
  • 낭비 최소화.

외부 확장

인터넷 시대의 도래와 공급망계획(Supply Chain Planning) 소프트웨어를 통해 기업은 JIT 제조방법을 기업의 경계선 밖으로 확장하여 왔다. 공급자들이 조립공정에 필요할 때에만 공장으로 재고를 배달하도록 함으로써, 제조, 주문 배달 프로세스를 더욱 신속하고, 유연하며 효율적으로 하고 있다. 이러한 방식으로 통합된 공급네트워크(integrated supply network 또는 수요네트워크 demand network) 또는 전자공급망(Electronic Supply Chains)이 형성된다.



적시생산시스템 시그(SIG).

시그(SIG) (28 개 회원)


새로운 주제

적시생산시스템 포럼.

Single Minute Exchange of Dies
Dear reader, I am currently working on a Single Minute Exchange of Dies (SMED) project in a beer production facility.
6 개의 댓글
Combining JIT and Outsourcing
JIT and outsourcing go hand in hand.
On one side it seems contradictory. JIT stands for producing and delivering to (...)
2 개의 댓글
How to Reduce the Vendor Risks with Just-in-Time ?
When we execute JIT, we normally require our vendor to prepare some stock to deliver fast.
If there are design chan (...)
1 개의 댓글
Can Just-in-Time Work Without Kanban?
Just-in-Time is a basic philosophy or a paradigm. If you read about it, you still have no idea HOW to do it.

Ka (...)
Importance of Inventory Velocity
Why is inventory velocity so important in supply chain management? (...)
2 개의 댓글
Experiences with Including Purchased Parts in Kanban
Taiichi Ohno was plant manager of a Toyota factory when he started experimenting with JIT, Kanban and other Lean tools. (...)
1 개의 댓글
Sustainable Business Approach after Years of JIT
I had a very interesting conversation with someone who has become recently Chief Sustainability Officer of a top 10 phar (...)
2 개의 댓글
Just-in-time Needs Flexibility
Of course, Just-in-time needs a flexible manufacturing system.
But actually, this flexibility has several aspects. (...)
1 개의 댓글
Classification of Lean Tools
Can you briefly explain how to classify lean tools?
I mean: different people seem to classify Lean tools in differe (...)
1 개의 댓글
Kanban and Procurement Planning
Does the Kanban or the pull system contradict with the procurement planning early in the project life cycle? (...)
2 개의 댓글
The Impact of JIT on the Organization of Production Planning
JIT will have a strong impact on your organization of production planning.
With JIT, a factory should operate in a (...)
1 개의 댓글
List of Barriers to Just-in-Time | Barriers to JIT
Though JIT as a theoretical concept seems superb, there are practical barriers in getting this concept to work in realit (...)
4 개의 댓글
JIT in Variable Marketplaces
In trying to implement a JIT system within my organisation. We are finding difficulties due to the random flows we are s (...)
5 개의 댓글
Customer Support in Just in Time is Needed
I think for implementing Just-In-Time, the customer must support it with firm and better forecasting, co-operative and c (...)
1 개의 댓글
Information Velocity
Why is information velocity important in supply chain management? (...)
2 개의 댓글
Poka Yoke - Explanation
Poka Yoke is a method that shapes the production process the way it gets almost impossible to make mistakes. Employees h (...)
1 개의 댓글
Disadvantages of JIT
A lean system has no resilience. Integrating JIT as far as possible back up the supply line creates rigid connections b (...)
14 개의 댓글
JIT is Playground for Big Companies
I think that JIT or zero inventory or any system aiming similar targets needs power to execute. There are three cushions (...)
4 개의 댓글
Intent of Just in Time
In my view, ultimately the intent of just in time is to minimise cost. Which must be understood very well and planning s (...)
4 개의 댓글


모범 사례

회원이 되세요

적시생산시스템에 대한 최고 평점 토론 주제. 여기에서 가장 가치있는 아이디어와 실용적인 제안을 찾을 수 있습니다.

Definition of Just-in-time
JIT can be considered as:
1. A way of life
2. A philosophy of continuous improvement
3. A way to achieve (...)
3 개의 댓글

Assumptions of Just-in-time (JIT)
Assumptions for effective JIT:
1. It depends on the type of product a company is manufacturing. JIT works best in f (...)
6 개의 댓글

The Principles of Lean
Lean works on certain principles:
1. Identify customer specific value (customer requirements);
2. Value stream (...)
4 개의 댓글

Lean Manufacturing Tools for Beginners
Could somebody tell me what are the most important lean tools and techniques that should be used in a company that are a (...)
10 개의 댓글

Just-in-time: Problematic or Possible?
Just-in-time (JIT) has always been a troublesome part of the management of any supply chain. However, it is feasible if (...)
5 개의 댓글

Lean and JIT Manufacturing
Is there any difference between Lean and JIT Production? (...)
7 개의 댓글

전문가 팁

회원이 되세요

Just-in-time에 대한 고급 통찰력 (영어). 여기에서 전문가의 전문적인 조언을 찾을 수 있습니다.

Main Advantages of JIT?

Benefits of Just-in-time
Among the main causes for the success of Just-in-time are its capabilities to deal with certain major economic trends: (...)

Lean Tools to Attack Waste

Waste Management, Waste Tools Overview
What lean tools you can use for every waste you can find at your company? Before you try to implement these lean tools (...)

7 Things to Avoid in Just-in-Time

Just-in-Time Pitfalls
The seven zeros or seven areas of wastes in JIT / Lean Thinking are: - Zero Defects: To avoid delays due to defects - (...)

Use of Andon as Part of Just-in-time

Signaling Abnormalities
Just-in-time is a pull-system. That means that when the customer places his order, the machine starts rolling. Of cours (...)

The 8 Wastes of Lean Explained

Waste Management
T - Transport - Moving people, products & information I - Inventory - Storing parts, pieces, documentation ahead of req (...)

Standard Work in Just-in-Time

A just-in-time organization has to be capable to function 100% reliable when pulled by the customer. To achieve this (...)

Operation Management Issues and Focus Areas

Operations Management, JIT, Kaizen
According to Heizer and Render, there are 10 decision areas of Operation Management (each having typical issues): 1. Go (...)

How to Focus your Improvement Efforts?

Achieve More With Less, Kaizen, BPR, JIT, Lean, Value Chain
Very often organizations consider continuous improvement as committing on improvement efforts, and thus creating project (...)

Synonyms of Just-in-time (JIT)

Other Terms that are used to Indicate JIT
Instead of JIT, you may also find the following similar terms: - Continuous Flow Manufacturing (IBM) - Stockless Produ (...)


JIT with supplier
The term JIT II has been applied as co-location and is a further step toward reducing unnecessary logistics times and co (...)

Obtaining a High Supplier Quality

Best Practice to Consider
W. Edward Deming, a well-known management consultant, strongly recommended Sole (Single) Sourcing as the only management (...)
정보 출처

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적시생산시스템 에 대한 다양한 정보 출처. 여기에서 자신의 강의 및 워크샵에 사용할 파워 포인트, 비디오, 뉴스 등을 찾을 수 있습니다.

Summary of Lean Manufacturing and Maintenance. History, Tools, PROs and CONs

Operational Excellence, Maximizing Efficiency
Detailed presentation about Lean Production, including the interesting origins of Lean Production in Toyota Motor Compan (...)

The Role of Value Chain Functions, Quality Management and Innovation in Competitive Advantage

Value Chain Management, Quality Management, Innovation, Operational Excellence
This presentation firstly presents the role of functional strategies and the value chain in the achievement of competiti (...)

Financial Consequences from Implementing Lean Manufacturing

In the last 30 years, many U.S. firms have adopted lean manufacturing strategies. Despite evidence of substantial variat (...)

Lean Production for a Green Environment

Lean Production, Lean Manufcaturing
Presentation about lean manufacturing and its relation with sustainable business. The presentation includes the followin (...)

Lean Assessment Tool

Lean / Six Sigma Assessment
Spreadsheet calculates current and future Lean and Six Sigma scores based on scoring in 28 criteria. Generates Lean Over (...)

Managing your Inventory: Quick Introduction to Just in Time, Stock Review and ABC Analysis

Basic Understanding of 3Inventory Management Techniques
This video gives a brief introduction to three popular Inventory Management Techniques: 1. JIT (Just in Time): Involve (...)

추가 연구 링크

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관련 개념:  Kaizen[카이젠, 개선기법]  |  Deming Cycle [데밍 사이클]  |  Six Sigma [6 시그마]  |  Value Chain[가치 사슬]  |  Value Stream Mapping [VSM, 가치흐름지도]  |  Bricks and Clicks [온라인 오프라인 공조전략]  |  Delta Model [델타 모델]  |  제 3 자 물류관리 (3PL)

다른 페이지로 이동: Change & Organization [변화와 조직]  |  공급망관리와 품질

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