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hydraulic unit

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Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002158
EISBN: 978-1-62708-188-7
... Abstract This article discusses the functions of the major components of a waterjet machining system. These include hydraulic unit, intensifier, accumulator, filters, water transmission lines, on/off valve, waterjet nozzles, abrasive waterjet nozzle, waterjet catchers, and fluid additives...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005122
EISBN: 978-1-62708-186-3
... on the rotary table revolves into it. A second hydraulic unit, fitted with a wiper shoe or roller, presses the workpiece into the contour of the form block at the point of tangency. The hydraulic unit applying the compression force can be moved as necessary to keep the wiper shoe in contact with the workpiece...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... are lower cost and slower than hydraulic units. The air units are used for small working void vessels and low production rates. Plant air is typically used for these pumps. Hydraulic intensifiers are installed for routine production, large vessels, and very high pressures. For wet-bag processing in most PM...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002133
EISBN: 978-1-62708-188-7
... rate. Horizontal shapers can either be crank driven or operated hydraulically. A hydraulic shaper uses a piston and cylinder to operate the ram. However, because of the higher cost of a hydraulic unit, the comparatively low efficiency of the hydraulic drive, and the difficulty in obtaining stroke...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005124
EISBN: 978-1-62708-186-3
... aluminum blanks approximately 0.76 mm (0.030 in.) thick and forming the three pieces as a unit. The inner and outer shells are discarded. A process similar to the Guerin process, for forming shallow workpieces, is a trapped-rubber process, which uses a drop hammer in place of the hydraulic...
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
... of hydraulic presses over mechanical presses has been the fact that a hydraulic press cannot be overloaded. This advantage has been eliminated by the introduction of overload units that can be installed in mechanical presses. These units basically consist of a hydraulic cylinder, installed within...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002148
EISBN: 978-1-62708-188-7
... and describes the clamping methods, namely, manual clamping, pneumatic clamping, and hydraulic clamping, and their specific principles. It presents an overview on modular fixturing for limited production. The article concludes with information on cost factors in fixturing. fixturing hydraulic clamping...
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
... notching can be accomplished with a small hydraulic unit in line with the welder, instead of dies and presses. These units are similar to the units used for dimpling and embossing. Formability tests for tailor-welded blanks can be performed via tension testing (in line with the weld and transverse...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001382
EISBN: 978-1-62708-173-3
... outside surface. The spindle was fixed in the machine frame using two simple yoke clamps. A hydraulic caliper disk brake unit was incorporated, when necessary, to assist ring deceleration. An electric motor rated at 56 kW (75 hp) provided rotation to the welding spindle via a clutch and transmission...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005307
EISBN: 978-1-62708-187-0
... with other die casting industry equipment; controls, both electrical and hydraulic, are standard, using basic design concepts to minimize complexity. These units can be purchased with their own hydraulic power sources, or they can be connected to the hydraulic system of the die casting machine. Whatever...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... Power presses for sheet metal forming can be driven either hydraulically or mechanically. The performance characteristics and other operational features of hydraulic and mechanical presses are compared in Table 2 . Comparison of characteristics of mechanical and hydraulic presses Table 2...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003973
EISBN: 978-1-62708-185-6
... Capacities of forging presses Type of press Force Pressing speed MN tonf m/s ft/s Mechanical 2.2–142.3 250–16,000 0.06–1.5 0.2–5 Hydraulic 2.2–623 250–70,000 0.03–0.8 0.1–2.5 Screw 1.3–280 150–31,500 0.5–1.2 1.5–4 Fig. 17 Schematic of drive systems for hydraulic...