Having become familiar with the various types of dies for stamping sheet metal, together with a general idea as to the methods employed in making the dies as outlined in a general way in Tool-Making, Part III, it is now essential that the student thoroughly understand the manner in which a die-maker sets about to satisfactorily complete any die. This article deals with die-making proper, entering into each minute detail and description of the various methods and shop kinks practiced by the expert die-maker, together with a description of why a certain piece is made first, and why it is made a certain way; taking up the next piece, and from this to a third, and so on step by step, until the completion of the die.
TYPICAL AUTOMOBILE STAMPINGS. Courtesy 0f Toledo Machint and Tool Company. Toledo, Ohio.
The first step practiced by an expert tool-maker when about to make any tool is to thoroughly understand the drawing from which he is to work; and from a thorough study of the drawing the completed tool in operation can be mentally pictured. The complete understanding of the job at hand is absolutely essential before a cut is made on any piece of steel, for the very nature of the work governs largely which piece should be made first. It is better to spend a whole day, if necessary, in studying the drawing of a complicated tool than it is to have only a vague idea as to the working principle, for more often it will be found that, due to lack of thoroughly understanding the mechanism, several days' time is lost on a spoiled piece of work.
We will take up the actual making of dies as outlined in Tool-Making, Part III.
It is the importance of understanding the working of the machine that emphasizes the necessity of every tool designer and die-maker being an expert mechanic.