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moving-punch system

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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: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006034
EISBN: 978-1-62708-175-7
... Single-action tooling systems generally are limited to production of class I parts. During the compacting cycle, the die, core rod, and one of the punches (usually the lower punch) remain stationary. Compacting is performed by the moving punch, which is driven by the action of the press. One or more core...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009154
EISBN: 978-1-62708-186-3
..., the parts to be joined are fixed by the blank holder (view 1). As the punch moves down, the punch rivet penetrates both the sheet layers, and the scrap is ejected (view 2). As the punch moves on, the conical head of the rivet begins to mold into the upper sheet layer (view 3). Once the head is fully molded...
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
... and die is such that the metal in the cup side is free to move without excessive rubbing on the die walls. It has been found that slight roughening of the punch radius and minimizing the lubrication of this area contribute to deeper drawability; however, the die opening should be smooth and well...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... × distance), expressed in inch-tons or joules (J), varies with the operation. Blanking and punching require the force to be exerted over only a short distance; drawing, forming, and other operations require force application over a longer distance. The major source the flywheel. The energy available...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005114
EISBN: 978-1-62708-186-3
.... Floating shanks are designed to compensate for a ram face that is not perpendicular to the cavity for the die set shank. The top of the punch holder is machined to receive a swivel adapter that contains a separate shank. The shank is permitted to move until it conforms with the ram face. Parallelism...
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
... the center post. A positive cam action returns the slide so that the cutoff tool will not interfere with forming. Generally, the cutting die and stripper, through which the work metal is fed, are stationary, while the punch moves to cut off the blank. It is sometimes desirable to install a second cutoff...
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
... is the process of axial closed die rolling (rotary or orbital forging). In this machine, a punched blank, solid disk or prerolled ring produced on conventional ring rolling equipment is worked between inclined-rotating dies. Annular forgings of very accurate dimensions, and in a range of complex cross sections...
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
... for the rapid changing of punches, an item of considerable importance in high-volume operations. In some cases, the stripping pressure may require the use of a shoulder-type holding system. In other cases, bridge-lock or solid-type holding may be best ( Fig. 17 ). Fig. 17 Punch-retaining methods...
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
..., the hydraulic ram of a stamping press is an actuator, with hydraulic pressure as its input and punch force as its output, while the metal that is formed is the plant, with punch force as an input and a material deformation measure such as thickness as an output. Systems may have several inputs and outputs...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005531
EISBN: 978-1-62708-197-9
.... Upper and lower punches then move toward each other to compress the powder. The pressure first rearranges the powder particles and then deforms each particle, leading to an increase in overall density by decreasing the pore space between particles. Because of friction along the die walls and between...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005118
EISBN: 978-1-62708-186-3
... to adjust the clearance of the cutting tools to compensate for wear. Cam Mounted on the Die A cam mounted on the die is usually driven by a wedge-shape driver attached to the punch. The action is obtained by a wedge-shape block on the punch, called the driver, which moves a wedge-shape block...
Book Chapter

By Yoram Koren
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002174
EISBN: 978-1-62708-188-7
... of these third-generation controllers are still in operation. In all of these systems, the numerical data required for producing a part is maintained on punched tapes and inserted to the controller through a built-in tape reader. An important advance in the philosophy of machine tool numerical control...
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
... for accurate vertical motion), recirculating oil systems must be used to provide forced-feed lubrication of bearings and slides. The fact that a die was built with uniform punch-to-die clearance at all cutting edges does not necessarily mean that the clearance is uniform at the instant the punch begins...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005113
EISBN: 978-1-62708-186-3
... of equipment for bending metal by delivering an accurate vertical force in a confined longitudinal area. Any metal that can be punched or bent by other processes can be formed on a press brake. Press brakes are manually fed by an operator. The operator holds a metal workpiece between a punch and die...
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
... a permanent installation at prices ranging from moderate to high. Slide feeds fall somewhere between the hitch feed and the roll feed in cost and have the capability of handling materials including the very thin and the very compressible. Air slide feeds are not limited to use in punch presses but can...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005178
EISBN: 978-1-62708-186-3
... with a deep throat. This facilitates the punching of holes, slots, or notches in plates and bars, and in webs or legs of structural members. A slide moving at 45° from vertical carries a blade for shearing angles. The support bed is on a swivel so that the ends of the angle section can be varied...
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
... prior to piercing of nearby holes. Fig. 2 Strip development for a ring-shaped part (two at a time). Note idle stage for die strength, layout of strip for material economy. Fig. 3 Basic blank shapes Fig. 4 Single-row blank layouts (shaded areas represent punches) Fig...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005539
EISBN: 978-1-62708-197-9
.... In the bottom center, the punch is shown positioned prior to the final forming operation. The fold created during extrusion is circled During the preform operation, a stepped die was used to distribute the volume. This sharp step then gets pushed into the tapered die during the backward extrusion...