By Shigeo Shingo, Andrew P. Dillon
Written by means of the economic engineer who built SMED (single-minute trade of die) for Toyota, A Revolution in production presents an entire evaluate of this robust simply in time construction instrument. It deals the main entire and designated directions to be had wherever for reworking a producing setting in ways in which will accelerate creation and make small lot inventories possible. the writer delves into either the speculation and perform of the SMED method, explaining basics in addition to innovations for utilising SMED. The significantly acclaimed textual content is supported with enormous quantities of illustrations and images, in addition to twelve chapter-length case reports.
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Additional info for A Revolution in Manufacturing: The SMED System
Together with the foreman and plant manager, I set about seeing what could be done. We took special pains to distinguish clearly between internal and external setup (IED and OED), trying to improve each separately. After six months we succeeded in cutting setup time to ninety minutes. We were all pleased with this success, but when I revisited the body shop the following month, Mr. Sugiura had some rather startling news for me. Management had given him orders to further reduce setup time, to less than three minutes!
4. Begin the next injection. When it is completed, close the valve between the mold and the pump. 5. Simultaneously connect the vacuum tank to the pump and remove the air that has entered the tank. 6. Continue expelling the air from the tank until the injection is completed, open the mold to remove the finished product, and close the mold again. 40 T H E S M E D SYSTEM Meter 1 Meter 2 ® Valves 1 and 2 are opened simultaneously after die is closed; air in die moves to tank 0 Meter 1 Close valve 2 when valves 1 and 2 read the same; pressure inside die will fall to 1/1001 Meter 2 ® Expel air remaining in die with pump at 1/1001 atm.
With resins, as with metals, defective items can sometimes be crushed and reused, but this is not satisfactory, because it leads to a deterioration in quality. It is always preferable to manufacture quality goods from the start and to avoid producing substandard goods altogether. In another case, molds for a mid-sized plastic molding machine were preheated simply by passing warm water through a coolant hose. A mobile steam generator was moved next to the molds to generate the warm water. This improvement was extremely efficient because of its simplicity and the fact that capital investment was less than ¥ 200,000 [about $826] * Thread Dyeing At a fabric manufacturing plant, dyeing operations had been conducted by immersing a rack holding a number of threads in a dyeing vat and then heating the vat with steam.