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progressive die forming

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Published: 01 January 2006
Fig. 47 Lamp bracket that was press formed to close tolerances in a progressive die. Dimensions given in inches More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005160
EISBN: 978-1-62708-186-3
... discussions on the general design features of progressive dies and the choice of proper auxiliary equipment such as coil feeders and scrap handling equipment. It concludes with information on different presses for progressive die work: open-back inclinable presses, four-column presses, and automatic...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005180
EISBN: 978-1-62708-186-3
... Because the tool motions in a four-slide are already built into the machine, toolmaking is confined to shaping of the working surfaces of cams, center forms, and slide tools. In progressive-die forming, the entire cam-motion system must be designed and produced. Families of parts, instead of requiring...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005115
EISBN: 978-1-62708-186-3
... by a wedging action between a blade and a moving block. These units are best at feeding medium-weight materials at relatively short progressions. Because of the low cost of some commercially available hitch feeds, they are often attached directly to a die where the setup can be of a permanent nature...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... of metal designed to have a predetermined contour for subsequent forming operations. The blank ordinarily serves as a starting workpiece for forming; less often, it is a desired end product. Making blanks without using a die is referred to as shearing, as discussed in the article “Shearing of Sheet, Strip...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
...-bed or horn presses are used for piercing holes in tubing and in the sides of drawn or formed shells and boxes. Adjustable-bed and gap-frame presses are generally rated at capacities of less than 1.8 MN (200 tonf). Straight-side presses are commonly used for compound-die and progressive-die...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
... of operations on one piece. Operations that can be combined in a progressive die include notching, piercing, coining, embossing, lancing, forming, cupping, drawing, and trimming. As the outline of the workpiece is developed in the trimming or forming stations, connecting tabs link the workpiece to the strip...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005119
EISBN: 978-1-62708-186-3
..., and straighteners are required when coil stock is used. Several types and sizes are available (see the article “Presses and Auxiliary Equipment for Forming of Sheet Metal” in this Volume). Feed Mechanisms In progressive-die operations, the common types of feed mechanisms, for example, single-roll or double...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005165
EISBN: 978-1-62708-186-3
...-slide machines are either single-stage or progressive, depending on the complexity of the part being formed. Generally, a progressive die is used, even though it may be only a simple two-station pierce-and-pilot die. The dies for producing the blank must be made as accurately for a multiple-slide...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005121
EISBN: 978-1-62708-186-3
... lubricated with a suitable drawing compound. Fig. 1 Mechanics of the deep drawing of a cylindrical cup Fundamentals of Drawing A flat blank is formed into a cup by forcing a punch against the center portion of a blank that rests on the die ring. The progressive stages of metal flow...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005139
EISBN: 978-1-62708-186-3
.... In multiple forming operations, such as progressive die setups, interrupting the stamping cycle of a 301 or 304 part can mean that with press restart, partially formed pieces will stamp differently. The cooler part will form a greater volume of martensite than one kept warm without a forming cycle...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... with chlorine and fatty additives are used successfully. Care must be taken to prevent buildup on the dies and corrosion of machine or formed parts when water-base lubricants are used. Deep Drawing Progressive and multiple-die sets are being used more and more frequently, and thus carry-through...