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Lean Manufacturing
Implementation of Just-in-Time (JIT)

 

 

 

 

What is JIT?

Just-in-time manufacturing means producing the necessary items in necessary quantities at the necessary time.

JIT is a vital component of Lean Manufacturing. In Kaizen, JIT is a is a collection of concepts and techniques for improving productivity.
 

  JIT- Just-In-Time Manufacturing and Impelmentation

 

 

JIT is a philosophy of continuous improvement in which non-value-adding activities (or wastes) are identified and removed.

 

Lean vs. Traditional Manufacturing

Kaizen Culture

 

 

 

Don’t push, pull. Produce the necessary items just-in-time (JIT)

Putting this concept into practice means a reversal of the traditional thinking process. In conventional production processes, units are transported to the next production stage as soon as they are ready. In JIT, each stage is required to go back to the previous stage to pick up the exact number of units needed.

 

 

 

Kamban – a Communication Tool

Being a very important tool for just-in-time production, kamban has become synonymous with the JIT production system.

Kamban, meaning label or signboard, is used as a communication tool in JIT system. A kamban is attached to each box of parts as they go to the assembly line. A worker from the following process goes to collect parts from the previous process leaving a kamban signifying the delivery of a given quantity of specific parts. Having all the parts funneled to the line and used as required, the same kamban is returned back to serve as both a record of work done and an order for new parts. Thus kamban coordinates the inflow of parts and components to the assembly line, minimizing the processes.

 

Lean Manufacturing

5 Key Features

7 Wastes  ▪  5S

Characteristics of Lean Manufacturers

KoRe 10 Tips

Kaizen Mindset

Toyota Production System

7 Principles of TPS

Toyota Corporate Culture

Toyota Problem Solving Techniques

 

 

 

Barriers to Successful JIT

▪ Lack of long-term commitment and leadership for management

▪ Insufficient empowerment of workers

JIT Components

Production Leveling
Pull System
Kamban (label or signboard) system
Good Housekeeping
Small Lot Production
Setup Time Reduction
Total Preventive Maintenance (TPM)
Total Quality Control (TQC)
JIT Purchasing
Line Balancing
Flexible Manufacturing
Small-group Activities (SGA)


Example: Canon

The objectives of Canon Production System (CPS) are to manufacture better quality products at lower cost and deliver them faster. The three basic parts of CPS are Quality Assurance (QA), Production Assurance (PA) and Personnel Training (PT).

 

 

 

Production Assurance (PA) System is aimed to achieve just-in-time manufacturing, fast delivery, low cost, and also adopt the "visual control" philosophy.

Canon has devised two subsystems to attain these PA goals: Canon's HIT System (equivalent to just-in-time) and Signal System. The HIT System means making parts and products only when needed and only in the quantity needed. Canon uses either HIT cards or signals for this purpose.

 

Continuous Improvement Firm

Lean Production

3 Broad Types of Waste

Humorous Example

Suggestion Systems

Japanese-style

 

 

 

Example: Dell

Dell Inc. were the first personal computer company to organize and build itself around the idea of direct customer feedback. This new approach allowed the company to deliver a better product at a lower cost.

By developing and building to order only the systems that their customers wanted when they wanted then, the company were able to virtually eliminate the excess cost tied into buying too many components, having to store them, and then selling the surplus at a loss. This enabled Dell to speed up the process of configuring and delivering their products saving them time and allowing the company to pass on the savings to their customers.

By reexamining their direct model, Dell realized that inventory management was not just a core strength; it could be an incredible opportunity for them, and one that had not yet been discovered by any of their competitors. The direct model turns conventional manufacturing inside out. It has nothing to do with stockpiling of raw materials and everything to do with information.

With more information about customer needs you need much less inventory. Less inventory corresponds to less inventory depreciation. Inventory velocity has become a passion for Dell and a key to their long-term success.

 

 

 

They were able to reduce inventory well below the levels anyone thought possible by constantly challenging and surprising themselves with the results.

 

GSEP (India)

RTS (India)

Thara Engg (India)