Die Idee einer alten Geheimgesell- schaft, die bereits im 18. Jahrhundert die Errichtung einer zentralen Weltregierung anstrebte und angeblich die Geschicke der Zivilisation bis heute lenkt. Die ...
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What is a Die? Elad Ashkenazi
Die Design Content: Environment What is Die ? Die technology
Environment Sheet metal parts characteristic: Mechanical strength No sharp edges Mostly - Uniform Wall thickness Thickness up to ~6 mm (0.7 to 3.4)
Environment Terminology Die = press tool Punch = male Die = Matrix = Female Blank = sheet format
Environment Press The Dies Driven force Common propulsion Mechanical - simple force curve , cheap Hydraulic - controlled force & motion curve. Pneumatic - controlled force curve , expansive , use for small parts
Environment Press Features Clamping Force Stroke Size Open \ Close wall Cycle rate
Strip in focus Blank Pilot Carrier
Punch Progression
Intermediary Shapes
Metal forming Machine Press parameters : Force – clamp force available. Length – sheet metal size available. RATE – number of cycles per minutes. Stroke size – opening motion size
Metal forming Machine Press - general structure Static side Sliding unit Motor
Environment Die Product Ability to Unfold
No sharp corners Sharp corners >> Inner radius < sheet metal thickness
Environment Die Product
Environment Single axis part At least one face keep its position along the operation
Multi axis part Operations required part rotation
What is a Die ? Die - transform a flat strip of metal into a part.
Coil
Die
Product
What is Die ? Detailed information is available on the provider net Go to: Provider net >> Die Design Theoretical course document Theoretical course presentations (2) Demo Movies Demo part
Die Technology Die production – A combination of basic operations:
Material removing Blanking (cutting) Punching (cutting)
Plastic Forming Bending Forming Stamping
Die Technology Cutting Die
Die Technology Cutting Die
Die Technology Cutting Die tools Punch geometry – reduce punch force
Flat inner shapes
bevel External areas
Double bevel Big areas
Concave
Die Technology
Die Technology
Die Technology Cutting Die example Compound Die – Multi operations in one stroke
Die Technology Stamping Die
Die Technology Stamping Die
Die Technology Forming Double effect Die Blank edges are fix
Die Technology Forming Single action Die
Die Technology main Dies are: Progressive Dies Line Dies Transfer Dies Compound Die
Die Technology Progressive Die Combines a number of forming and trimming functions performed continuously metal strip.
Die technology Progressive Die Great Production rate ~100 per min and Up Steel is fed into the die, typically from a coil. Each die cycles perform multi operations along the strip Material is progress automatically along the die. Completed parts is cut and ejected each cycle
Die technology Progressive Die 9 Great volume production 9 They often can run unattended. 9 Require only one press. expensive Require precision alignment and setup procedures. Require a coil feeder system. Require an open-ended press. Damage to a single station requires removing the entire die set. Much heavier than single-station line dies.
Die technology Progressive Die
Die technology Line Dies Die 1
Die 2
Die 3
Die technology Line Dies Each Operation required press 9 9 9 9 9
Big parts Run together in a common press Cheap Die , Cheap Maintaining Allow Multi axis rotation - complex geometries. Smaller tools ,lighter die Low production volume Several presses required to manufacture a single part. Require expensive robots or human resource.
Die technology Transfer Dies Why ? The volume is high enough Big and complex parts How its work A piece is trimmed from the strip as the first Operation Metal piece is transferred independently along the Die
Die technology Transfer Dies Mechanical feeders Clamps transfer Balance with/without pilots
Die technology Transfer Dies
Die technology Transfer Dies
Die technology Transfer Dies
Die technology Transfer Dies 9 Large parts 9 Stamped parts can be turned over or rotated. (Multi axes parts) 9 Material savings - No strip
