TABLE OF CONTENTS After the layout of a die has been drawn, dimensions and notes must be applied to complete the information that the die makers will require in order to build the die exactly as the designer planned it. Some dimensions are simple; others must be calculated from considerable background information and experience.
There are two methods of detailing a die. In assembly detailing, all dimensions and notes are given on the assembly drawing. The dimensions can be of two kinds. The first kind includes dimensions that establish relationships between the various components, as needed for assembly of the die. The second kind of dimensions are applied for critical operations performed after assembly to maintain accuracy. Assembly detailing should be used only on designs suited to that method because of the difficulties encountered in building the die if dimensions are vague.
The second method of detailing is to draw and dimension each component individually. Separate detailing is used for more complex dies. It is the best method in most cases because with it, die makers can be furnished with more complete information. Dimensions should not have to be calculated in the tool room because, while the die makers are working on dimensional problems, their expensive equipment is standing idle.
The shut height of the die the distance from the top of the punch holder to the bottom of the die holder should always be given on the drawing. It is noted with a fractional dimension followed by the abbreviation S.H. for shut...
