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Published: 30 November 2023
Fig. 3.29 Brute and variable drives, (a) mold punchout unit, (b) vibratory shakeout for molds in flasks. Notes: (1) Roller conveyor; (2) Pusher cylinder; (3) Flask vibrating grid; (4) Sand-castings vibrating grid; (5) Casting conveyor; (6) Return sand conveyor; (7) and (8) Pusher cylinders; (9 More
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Published: 01 February 2005
Fig. 11.1 Schematic illustration of drives for hydraulic presses. (a) Accumulator drive. (b) Direct drive. [ Riemenschneider et al., 1959 ] More
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Published: 01 February 2005
Fig. 11.2 Schematic illustration of two types of hydraulic press drives. (a) Push-down drive: 1, stationary cylinder cross head; 2, moving piston-ram assembly; 3, stationary press bed with return cylinders. (b) Pull-down drive: 1, movable cylinder-frame assembly; 2, press bed with return More
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Published: 01 February 2005
Fig. 11.23 Four-bar linkage mechanism for mechanical press drives More
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Published: 01 February 2005
Fig. 11.25 Two widely used screw press drives. (a) Friction drive. (b) Direct electric drive. [ Bohringer et al., 1966 ] More
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Published: 01 August 2012
Fig. 10.5 Common drives for mechanical presses: (a) crank press, (b) link drive press, and (c) knuckle joint press. Source: Ref 10.9 More
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Published: 01 August 2012
Fig. 12.11 Direct drives and their energy efficiencies: (a) constant-rpm electric motor and constant-displacement pump, (b) constant-rpm electric motor and variable-displacement pump, and (c) variable-rpm electric motor and constant-displacement pump. p , pressure. Source: Ref 12.22 More
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Published: 01 August 2012
Fig. 12.12 Spinning with hydraulic or electric drives in two linear axes. Source: Ref 12.10 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... Abstract This chapter discusses the design and operation of electromechanical servo-drive presses. It begins by comparing the operating flexibility of servo-press drives with that of their conventional counterparts. It then explains the difference between direct-drive and belt and screw-driven...
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Published: 01 August 2012
Fig. 10.7 (a) Direct drive (nongeared), (b) single gear reduction-single end drive, (c) single gear reduction-twin end drive, and (d) double gear reduction. More
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Published: 30 November 2023
Fig. 3.17 Roller conveyor drive More
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Published: 31 March 2024
Fig. 5.7 Vibration spectrum of generator shaft, drive end at 5000 kW. p-p, peak-to-peak More
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Published: 01 November 2019
Fig. 27 Arrhenius plot showing how lifetime varies with temperature and drive current, using a typical VCSEL acceleration model, with 0.7eV activation energy, and degradation proportional to drive current squared, assuming a 12 µm round oxide VCSEL. Each line shows expected range of lifetimes More
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Published: 01 November 2019
Figure 32 a) SEM image of a failed comb drive. Failure analysis revealed b) a MEMS element spot welded to the ground plane, and c) a MEMS element that contacted the ground plane and popped back. More
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Published: 01 January 2000
Fig. 42 Fretting corrosion of the bearing race of a helicopter drive train over-running clutch. This problem was caused by vibration (and rubbing) of the ball in the inner and outer races of bearings that support the rotor shaft. Note the two areas on the left- and right-hand sides More
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Published: 30 November 2013
Fig. 35 Close-up of a reduced area on a medium-carbon steel drive shaft showing the X-shaped crack pattern characteristic of reversed torsional fatigue. Reversed torsional fatigue causes approximately 45° spiral fatigue cracks on opposite diagonals. The original shear crack More
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Published: 01 September 2008
Fig. 8 Drive shaft pinion with fatigue fractures propagating from the acute-angular edge of the helical gear. Source: Ref 13 More
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Published: 01 November 2013
Fig. 22 Cross section of four-hammer radial forging machine with mechanical drive. (a) Eccentric shaft. (b) Sliding block. (c) Connecting rod. (d) Adjustment housing. (e) Adjusting screw. (f) Hydraulic overload protection. (g) Hammer adjustment drive shafts. Source: Ref 10 More
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Published: 01 August 2005
Fig. 5.37 Schematic illustration of K being the driving force of fatigue crack propagation. Source: Ref 5.42 More
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Published: 01 August 2005
Fig. 5.39 Expanded crack driving force concept More