chapter  5
40 Pages

Applying SMED to Internal Operations

WithShigeo Shingo

Operations on plastic molding machines, die-casting machines and large presses invariably involve work both at the front and at the back of the machine. When a single person performs these operations, movement is continually being wasted as he walks around the machine. A functional clamp is an attachment device serving to hold objects in place with minimal effort. For example, the direct attachment method is used to secure a die to a press. A bolt is passed through a hole in the die and attached to the press bed. A U-shaped slot was cut in the attachment edge of a die. By inserting the head of the bolt into a dovetail groove on the machine bed, then sliding the bolt into the U-slot of the die, it became possible to fasten the die with one turn of the nut. This method guarantees a very strong attachment.