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Automotive Dies Terminology: Complete Guide to Stamping Process and Die Components

This automotive dies terminology guide provides a structured overview of stamping process terminology, stamping die components, and engineering terms used in automotive stamping production.

Understanding accurate terminology is essential for engineers, manufacturers, and buyers to ensure effective communication and efficient project execution in automotive stamping die development.

Section 1: Automotive Stamping Process Terminology

The following stamping process terminology describes key operations used in sheet metal forming:

TermDescription
CutPartial separation of material along an open contour
Trimming (TR)Removing excess material after forming
PiercingCreating holes by separating material along a closed contour
BlankingSeparating a workpiece from raw material
DrawingForming a flat blank into a hollow shape
BendingDeforming material into an angle or curve
EmbossingCreating raised or recessed features
FlangingForming edges into vertical or angled shapes

In advanced automotive stamping die applications, controlling these processes is critical to avoid defects such as wrinkling and cracking.

Special Process: Reverse Drawing

Reverse drawing is a specialized forming method where material flow direction is reversed compared to standard drawing. This method helps reduce residual stress and improves forming quality.

However, it requires careful design to avoid excessive material resistance and ensure die strength.

Section 2: Stamping Die Components Terminology

This section introduces key stamping die components used in automotive die structures:

ComponentDescription
Upper DieMounted on the press slider
Lower DieMounted on the press bed
PunchForms or cuts the material
DieReceives the material and defines shape
Blank HolderControls material flow during drawing
Guide PostEnsures alignment of upper and lower die
Guide BushWorks with guide post for precision movement
Stripper PlateRemoves material from punch

Proper understanding of these automotive stamping die components is essential for die design and maintenance.

Section 3: Stamping Engineering Terminology

In addition to process and component terms, the following engineering definitions are commonly used:

TermDescription
Bottom Dead CenterLowest position of the press stroke
Top Dead CenterHighest position of the press stroke
SpringbackElastic recovery after forming
StrokeDistance traveled by press slider
ClearanceGap between punch and die
PitchDistance between successive operations
BurrSharp edge after cutting
WrinklingWave defects caused by excess material

Understanding these stamping engineering terms helps improve communication and optimize die performance.

Conclusion

This automotive dies terminology guide provides a practical reference for engineers and manufacturers involved in stamping die design and production.

By mastering metal stamping terminology, professionals can improve communication, reduce errors, and achieve better production outcomes.

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Dongguan Changdong Tool & Die Co., Ltd. is a custom metal stamping die and stamped parts manufacturer founded in 2012. We support automotive, home appliance, electrical and industrial projects from DFM review and die design to press tryout, sample validation and metal stamping production.

Main capabilities: Stamping Dies | Progressive Die | Transfer Die | Prototype Die | Prototype Tooling | Stamping Parts | Custom Metal Stamping Parts

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