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hydraulic fine-blanking presses

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Published: 01 January 2006
Fig. 26 Hydraulic fine-blanking press. (a) Schematic (b) photo of modern hydraulic fine-blanking press More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005110
EISBN: 978-1-62708-186-3
... by the ejector. It discusses the advantages and disadvantages of edge blanking and materials. The article reviews the classification of fine-blanking dies such as the moving-punch system and the fixed-punch system, and provides information on the mechanical and hydraulic fine-blanking presses. cold...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005112
EISBN: 978-1-62708-186-3
... blanking presses, and flexible-die forming presses. automatic handling equipment die casting machines fine-blanking flexible-die forming presses gap-frame presses high-production presses hydraulic presses hydraulically powered machines mechanical presses mechanically powered machines...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... of ferrous or nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
...-forming operations, namely, rectangular blank, rough blank, partially developed blank, and fully developed blank. It concludes with a discussion on the process capabilities, applications, and limitations of fine-edge blanking and piercing. blanking cam piercing conventional piercing...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005142
EISBN: 978-1-62708-186-3
... to as double action. Single-action tooling should be used to form parts that fall in the no-restraint section of Fig. 3 . Double-action tooling, or tooling that applies blank restraint to avoid wrinkling, was developed in two forms. In one system, the lower cushion ram in a hydraulic press is used...
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
... in this article. Fine-edge blanking is treated in the article “Fine Edge Blanking” in this Volume. The applications of these methods are described in examples throughout this article. Other examples of these methods of producing blanks are provided in the articles “Piercing of Low-Carbon Steel,” “Blanking...
Book Chapter

By Robert Bolin
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003982
EISBN: 978-1-62708-185-6
... be formed using only a fraction of the force that would be required if the entire part were formed under a die. Process Overview The input blank for the ring rolling process is a donut-shaped preform that is usually formed in a hydraulic press, mechanical press, or forging hammer. Recently, tube...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003987
EISBN: 978-1-62708-185-6
... coining. For these processes, coining usually follows combinations of piercing, forming, and blanking. Hydraulic Presses Hydraulic presses are extensively used for sizing operations, especially for workpieces with large surfaces to be coined. Spacers are required for maintaining close tolerances...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005129
EISBN: 978-1-62708-186-3
... preparation for laser welding Short laser welds, electron-beam welds, and induction welds can be made with die-cut blanks if the dies are constructed to a standard similar to fine blanking. These standards demand more stringent tolerances than normal blanking dies. Die clearances that are normally...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005141
EISBN: 978-1-62708-186-3
... to 20% fatty oil Tallow plus 50% paraffin Tallow plus 70% paraffin Mineral oil plus 10 to 15% sulfurized fatty oil and 10% fatty oil Dried soap films or wax films Fat emulsions in aqueous soap solutions with finely divided fillers Mineral oil with sulfurized fatty oil, fatty oil...
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
... (e.g., lubrication, blank surface, die roughness, etc.). Fig. 1 Single-action press with draw cushions in the press table. (a) Pneumatic draw cushion. (b) Hydraulic draw cushion. Source: Ref 1 The hydraulic four-point cushion ( Fig. 1b ) system is mainly a passive system...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005116
EISBN: 978-1-62708-186-3
... is removed to eliminate the fracture angle. Another is the fine blanking process, in which a special press or die set is used to compress the material in the shear plain during the cutting cycle and thus eliminate the fracture angle. Deformation The type, hardness, and thickness of the material all...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
...Abstract Abstract Forging machines use a wide variety of hammers, presses, and dies to produce products with the desired shape, size, and geometry. This article discusses the major types of hammers (gravity-drop, power-drop, high speed, and open-die forging), and presses (mechanical, hydraulic...
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
... accuracy and smoothness of hole walls can be obtained by fine edge piercing. With this method, one stroke of a triple-action press pierces holes with smooth and precise edges for the entire thickness of the material. Additional information is available in the article “Fine-Edge Blanking” in this Volume...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005153
EISBN: 978-1-62708-186-3
... and the fine-tuning of the stamping process to produce high-quality parts with low scrap rate is a very expensive and time-consuming process. After production begins, disturbances to the process (material property variations, frictional interface changes, tool wear) may cause many parts to be scrapped due...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005100
EISBN: 978-1-62708-186-3
... hydroforming and electrohydraulic or explosive forming has also been proposed. In this case, the press tonnage required to develop the high fluid pressures needed to ensure the flow of the sheet into fine details at the end of forming is reduced by using local HVMF. More information on HVMF is contained...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004005
EISBN: 978-1-62708-185-6
... combined backward extrusion and coining for the fabrication of 5120 steel valve tappets. Example 1: Backward Extrusion and Coining for Producing Valve Tappets The valve tappet shown in Fig. 10 was made from fine-grain, cold-heading quality 5120 steel. Slugs were prepared by sawing to a length...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006425
EISBN: 978-1-62708-192-4
... are not smooth, various processes such as fine blanking have been utilized to solve the problem, as shown in Fig. 6(a) . These processes ensure that the entire sheet thickness is plastically sheared by imposing compressive stresses, delaying crack initiation. Although various factors affect shearing ( Ref 12...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005144
EISBN: 978-1-62708-186-3
... reductions (up to 55%). Reductions up to approximately 55% can often be made on high-speed hydraulic or mechanical presses. Also, milder draws permit lower forming temperatures, and costs can be reduced because strip feeding, blanking, lubrication, trimming, and cleaning can be simplified. For most...