Just-in-Time/Lean



Just-In-Time/Lean

Define JIT/Lean

Just In Time (JIT) is the backbone of the lean manufacturing system. Initially Toyota production system is known as the JIT system due to this reason. All the basic concepts which lately became lean manufacturing developed in Toyota for this system. For an example, concept of producing things when they need, pull scheduling, kanban are few things developed here.

Initially JIT aimed at manufacturing process improvement.

What two fundamental advantages are provided by JIT/Lean?

The two fundamental advantages provided by JIT/Lean are:

Over Production Ceases

Labor Costs Are Reduced

Explain how traditional mass production contributes to the seven wastes?

The seven deadly wastes of lean manufacturing

Overproduction or more production than there is actually demand.

Transportation or the moving of products that is not really needed to actually perform the processing.

Waiting, or waiting around for the next step in production.

Inventory, which consists of either all components, the work in progress, and the finished product not being processed.

Motion, which consists of both or either people moving or walking or equipment moving more than they actually have to in order to the processing to be performed.

Over Processing, this results from poor product design or poor tool design, leading to unnecessary activity to compensate.

Defects, which refers to the effort that is involved in looking for, inspecting, and then fixing defects in processes and products.

Lean manufacturing aims to eliminate as much as possible these seven wastes, also known as the seven deadly wastes, from manufacturing processes. Lean manufacturing strives to use less of everything when compared to how much is used in regular mass production manufacturing. Thus lean manufacturing works to have less waste (less of the seven deadly wastes), less space used for manufacturing, less human effort, less investment in tools, and less time spent designing and developing a new product by engineers and designers.

Explain the push system ...