TS 11706

TS 11706 is a standard for relief grooves in technical drawings. It addresses how these groove-like relief features at the bottoms of machined transitions are represented, helping design and manufacturing read the same geometry in a consistent way.

Why relief grooves matter in drawing practice

In general technical usage, a relief groove is a deliberately formed recess at an internal corner, shoulder, groove end, or similar transition area. These features can make a part easier to manufacture and inspect, while also preventing ambiguous intersections between adjacent surfaces. In a drawing, the way such a detail is shown affects how the intended shape, tool access, and local geometry are understood.

The scope of this standard is limited to relief grooves themselves, so it is concerned with this specific drawing feature rather than broader drafting practice. The reference basis includes DIN 509, DIN 5418 and DIN 616, linking the topic to established mechanical drawing conventions. It is used in the field of machine engineering drawings, where precise and unambiguous graphical communication is essential.

• Clear depiction of internal corners and bottom transitions
• Consistent geometric intent between design and production
• Reduced interpretation differences in technical drawings
• Standardized drawing language for machined transition areas