Concept of JIT: [1] JIT is a Production methodology which aims to improve overall productivity through elimination of waste and which leads to improved quality. [2] JIT concept was implemented in Japan to eliminate waste of materials, machines, capital, manpower and inventory throughout the manufacturing system. [3] JIT is a philosophy rather than a technique. By eliminating all wastes and seeking continuous improvement, it aims at creating a manufacturing system that is responsive to the market needs. [4] It was first developed and perfected within the Toyota Manufacturing Plants by Taichi Ohno as a means of meeting customer demands with minimum delays. For this reason Taichi Ohno is known as the father of JIT.
Importance of JIT for Improving Productivity of Manufacturing System:
[1] JIT receives supplies just in time to be used.
[2] JIT produces parts just in time to be made into subassemblies.
[3] JIT produces subassemblies just in time to be assembled into finished products.
[4] JIT produces and delivers finished products just in time to be sold.
[5] JIT is a well integrated system resulted in increase in quality, productivity with zero defects.
[6] JIT reducing the level of wasted materials, time and effort involved in production processes.
[7] JIT identifying and responding to consumer needs.
[8] Its ease of manufacturing
[9] Its reduces inventory
[10] Its reduces inspection
[11] It improves quality continuously.
[12] It provides Higher flexibility to production system.
[13] It improves customer satisfaction
[14] It improves working condition and relation between employees.