Stamping terminology and penetration factor











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Sheet metal stamping dies

The mainforming operations accomplished with press mounted dies are. The setting of the required clearances is determined by both thestock thickness and temper. Lubricants range from light mineral oils to high viscosity drawing compounds. Single station dies can be either compound dies or combinations dies. A compounddie performs basic cutting operations such as blanking and hole punching toproduce parts. You can publish your book online for free in a few minutes. Withoutsufficient formability qualities, drawn blanks are subject to wrinkling,thinning, and fracturing. Individualstampings are connected with a carrier strip as they progress through thevarious die operations and are ultimately separated and then discharged from thepress. In transfer die operations individual stock blanks are mechanically movedfrom die station to die station within a single die set. In practice, the blankholder must exert less pressure againstthe blank than the punch, so metal can flow into the die. yet it must exertenough pressure to prevent the material from wrinkling. Create your own flipbook. Hole punching and other cutting operations require specific and carefullymaintained clearances between the punch male component and the die femalecomponent. The male and femalecomponents work in opposition to both form and punch holes in the stock. View in Fullscreen Report. Draw forming requires an addition to the die setcalled a blankholder.

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Description: Multiple stamping operations may be performed within a single die, or at anumber of die stations within a die set and with a single stroke of the press. Draw forming requires an addition to the die setcalled a blankholder. In practice, the blankholder must exert less pressure againstthe blank than the punch, so metal can flow into the die. yet it must exertenough pressure to prevent the material from wrinkling. Large stampings aredone with tandem press lines where the stock is moved from press to press inwhich specific operations, such as drawing or trimming, are performed. A carrier strip is used with. A compound die is a die that performs. This results in reduced tonnage requirements, longertooling life, and improved product quality. Two die types are used. progressive andtransfer. Combination dies combine shaping and forming functions withcutting operation to manufacture parts. View in Fullscreen Report. The lower half is attached to anintermediate bolster plate which in turn is secured to the press bed. Most sheet metal stamping uses materials. The CGA process is repeated on thedie until an acceptable part is produced. The resistance of the sheet metal stock to the forces exerted by the moving diescreates friction. The function of the blankholder, usually a ring throughwhich the punch and ram pass, is to control the metal flow as it is forced intothe die cavity.
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