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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400145
EISBN: 978-1-62708-316-4
... on force, velocity, and stroke profiles. It begins by describing the simplest drive configuration, a crankshaft that connects directly to the slide, and a variation of it that uses eccentric gears to alter the stroke profile. It then discusses the effect of adding a fixed link, knuckle joint, or toggle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040115
EISBN: 978-1-62708-300-3
... regulate the ram speed with respect to forming pressure or product temperature. This control feature can offer a considerable advantage in optimizing forming processes. 11.2.1 Drive Systems for Hydraulic Presses 11.2.2 Characteristics of Hydraulic Presses 11.2.3 Mechanical Crank and Eccentric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040141
EISBN: 978-1-62708-300-3
... shear, a heating furnace, a forging press, and a ring-rolling mill. The principles of an automatic horizontal ring-rolling mill for manufacturing bearing races are illustrated in Fig. 12.13 . Four mandrels are mounted in a rotating table, and the main roll, eccentrically located within the table...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250139
EISBN: 978-1-62708-345-4
... the process. Concentricity of the gear outside diameter and pitch diameter to the bore are also controlled by the tooling. If the pressing core rod or punches are eccentric to the die, the parts will be eccentric. Once the part is pressed, the material characteristics and sintering process determine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... and at any point in the stroke. Mechanical press designs can have a variety of drive options—such as link, screw, knuckle joint, eccentric, or crank—and operate with a variable stroking rate. However, slide motion versus stroke is fixed by the design, although the stroke position and length can be adjusted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870351
EISBN: 978-1-62708-314-0
... and for the determination of typical shear stress values. Since the load path is essentially straight, it does not suffer from the eccentric problem, as does the single lap shear configuration. This test is frequently used with composites, as well as with metal adherends. It can be used to determine the shear stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400129
EISBN: 978-1-62708-316-4
... α L M is the load applied by the machine, e is the eccentricity of the load, M is the tilting moment created by the eccentric load, d is the vertical deflection, and α is the angular deflection as depicted in Fig. 9.6 . The main influences of stiffness, C , on the forming...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.9781627083164
EISBN: 978-1-62708-316-4
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040151
EISBN: 978-1-62708-300-3
... ). The billet is then sheared and ready for further processing. Fig. 13.6 Stock volume monitoring system [ Breitling et al., 1997 ] Most conventional shears are mechanical and their operation is based on the eccentric slide principle, as in mechanical forging presses. The holddown mechanism...
Book Chapter

By Soumya Subramonian
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500001
EISBN: 978-1-62708-317-1
... are made of bronze. An eight-track roller gib system, with 16 roller elements, is generally used. The rollers run along hardened gib rails, backlash-free ( Ref 1.1 ). Blanking presses are high-speed eccentric or link-drive presses. They feature a high degree of rigidity as well as small bearing and gib...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040107
EISBN: 978-1-62708-300-3
... (hydraulic presses) Stroke-restricted machines (crank and eccentric presses) Energy-restricted machines (hammers and screw presses) Hydraulic presses are essentially load-restricted machines; i.e., their capability for carrying out a forming operation is limited mainly by the maximum load...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870449
EISBN: 978-1-62708-314-0
... environment, where adhesive is brittle. … 7. Balanced adherend stiffnesses improve joint strength. … 8. Minimize joint eccentricities. Eccentricities cause bending and peel stresses in adhesive. 9. Use adherends with similar coefficients of thermal expansion. … 10. Use ductile adhesives...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170091
EISBN: 978-1-62708-297-6
..., and eccentric gears. Because the thermal conductivity of CG iron is higher than that of ductile iron, CG iron is preferred for castings operating at elevated temperature and/or under thermal fatigue conditions. Applications include ingot molds, crankcases, cylinder heads, exhaust manifolds, and brake disks...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870085
EISBN: 978-1-62708-299-0
... of the chamber material could have been a contributory factor, resulted in eccentric rotation and the excessive vibration that caused malfunction of the assembly. Contact against a surrounding member then caused the extensive abrasion shown at the left edge of Fig. 4(a) . The pitting (which showed maximum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... the coil, the condition could be from vibration due to restriction of the coil to the cooling water, poor position of the workpiece relative to the coil, or eccentric rotation of the workpiece. An overheating coil needs either more cooling water or a better design. Arcing across the turns of the coil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250089
EISBN: 978-1-62708-345-4
... of metal from the working surfaces of gear teeth. Its purpose is to correct errors in index, helix angle, tooth profile, and eccentricity. Shaving is carried out prior to gear heat treatment. Grinding is a technique of finish machining utilizing a rotating abrasive wheel. Grinding is an effective means...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500249
EISBN: 978-1-62708-317-1
...: spinning of hollow bodies, expanding, and necking. Workpieces can be expanded or necked by the use of a part-specific mandrel, as shown in Fig. 12.4(b) or (i) . Using split or eccentric mandrels ( Fig. 12.4f ), undercuts can be obtained by necking-in a part. Furthermore, spinning can be used to deform...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480207
EISBN: 978-1-62708-318-8
... with conventional crank and eccentric presses. This allows high stroke rates, whereby the deformation speed on the titanium bar remains within the range of conventional presses. This type of operation gives GFM’s machines a high production potential. Temperature ranges for GFM forging are listed in Table 9.1...