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Lean

Just In Time (JIT)

1 Introduction

Just-in-time (JIT) is easy to grasp conceptually, everything happens just-in-time. For example consider my journey to work this morning, I could have left my house, just-in-time to catch a bus to the train station, just-in-time to catch the train, just-in-time to arrive at my office, just-in-time to pick up my lecture notes, just-in-time to walk into this lecture theatre to start the lecture. Conceptually there is no problem about this, however achieving it in practice is likely to be difficult!

Quick Changeover (SMED)

1 Introduction

Quick Changeover is a method for rapidly and efficiently converting a process from running the current product to running the next product. Quick Changeover can, and often is, used in starting up a process and rapidly getting it to running condition with minimum waste.

2 Keys to Quick Changeover

Reducing changeover times is one way to eliminate waste and one area that contributes to a shop becoming lean. The keys to quick changeover are as follows:

  1. Rethink the idea that machines can be idle, but workers cannot be idle.

Total Productive Maintenance (TPM)

1. Introduction

It can be considered as the medical science of machines. Total Productive Maintenance (TPM) is a maintenance program which involves a newly defined concept for maintaining plants and equipment. The goal of the TPM program is to markedly increase production while, at the same time, increasing employee morale and job satisfaction.

2. Types of Maintenance

It consists of three mainly kinds of maintenance:

  1. Preventive Maintenance:

Poka Yoke (Mistake Proofing)

1. Introduction

Level Scheduling

Introduction

Manufacturing technique that aims to create a smooth flow of production over a period. Its objective is to minimize disruptions caused by sudden changes in demand levels by matching the product family schedules with product-by-product schedules. To achieve the objectives of level scheduling, both the sales and production departments must agree on a fixed level of output volume and output duration.

How to schedule your labor force

When it comes to scheduling your labor force, there are two primary ways to schedule.

Value Stream Mapping (VSM)

Introduction


Value stream mapping is a lean manufacturing technique used to analyze the flow of materials and information currently required to bring a product or service to a consumer. At Toyota, where the technique originated, it is known as "material and information flow mapping".

Bottleneck Process Management

Introduction

Our operation is only as fast as our slowest process. To be successful, we need to target and eliminate bottlenecks. In general, a bottleneck is a process in an operation where the capacity is less than demand placed upon that operation.

Lean manufacturing 5S

Introduction

Lean manufacturing principle ultimately targets in waste elimination. This is the aim of 5s technique as well. Let me explain how lean manufacturing and 5s works together.

Statistical Process Control (SPC)

1 Introduction

Statistical Process Control (SPC) is a method that is used to control any process that has a measurable output. Small samples are taken from each batch, measured, and some basic calculations are then made.

2 SPC-Phases

  1. Capability Study

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