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hydraulically powered machines

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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
... Abstract This article describes the various types of press construction and the factors that influence the selection of mechanically or hydraulically powered machines for producing parts from sheet metal. Presses are broadly classified, according to the type of frame used in their construction...
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
... Abstract Hammers and high-energy-rate forging machines are classified as energy-restricted machines as they deform the workpiece by the kinetic energy of the hammer ram. This article provides information on gravity-drop hammers, power-drop hammers, die forger hammers, counterblow hammers...
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
... with work supports ( Fig. 7 ). Work supports replace the mechanical screw jacks required to prevent distortion of the part when initially clamped or during the machining process. Power sources used to operate the systems may be air/hydraulic or electric. They build and maintain pressure to ensure that parts...
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
... a hydraulically driven system of the same size. If a user works with dies having a high bottom section, then a hydraulic press brake is recommended. If a machine is needed to exceed its rated tonnage periodically, then a mechanical press brake may be the best choice. Speed is an important consideration...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001366
EISBN: 978-1-62708-173-3
... the: Initial burn-off region of linear flash Accelerating curve for the actual flashing profile Upset portion that causes the parts to be forged together after flashing Machines that are either larger or more complex use hydraulic cylinders to drive the movable platen and to incorporate hydraulic...
Book Chapter

By H.W. Sizek
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003984
EISBN: 978-1-62708-185-6
... be produced. Fig. 2 Four-hammer radial forging machine with mechanical drive. (a) Cross section through forging box. (b) Longitudinal section through forging box. 1, eccentric shaft; 2, sliding block; 3, connecting rod; 4, adjustment housing; 5, adjusting screw; 6, hydraulic overload protection; 7...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005134
EISBN: 978-1-62708-186-3
... mechanical and hydraulic presses, horizontal bending machines, rotary benders, and bending presses. Shapers have also been used to perform specific bending operations. Manual Bending Hand-powered machines or fixtures are used in many shops for making bends that do not require much energy to form...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... in this article are mechanically or hydraulically powered machines used for producing parts from sheet metal. Power presses can be classified according to the following characteristics: source of power, type of frame, method of actuation of slides, and number of slides in action. Presses in any of these classes...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006429
EISBN: 978-1-62708-192-4
... of machines such as positive displacement pumps including hydraulic pumps, turbo-pumps including centrifugal pumps, vacuum pumps, and compressors including the positive displacement type and turbo type. wear fluid machineries fluid power systems friction lubrication hydraulic pumps turbo-pumps...
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
..., due to the rake angle of the shear blade. Hydraulic power is noted for its maintenance-free performance, shock-free operation, and the ability to operate more than one machine from a single power source. The stroke of the ram can also be controlled for quicker cycle times. For example, if the cycle...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003974
EISBN: 978-1-62708-185-6
... equipment Forging machine Speed range Speed-stroke behavior ft/s m/s Hydraulic press 0.2–1.0 (a) 0.06–0.30 (a) Mechanical press 0.2–5 0.06–1.5 Screw press 2–4 0.6–1.2 Gravity-drop hammer 12–16 3.6–4.8 Power-drop hammer 10–30 3.0–9.0 Counterblow hammer 15...
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 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, screw...
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
... forming use rotary tables (some with sliding leaves) for mounting the form blocks, a ram gripping and tensioning or wiping device, and a mechanically or hydraulically actuated table gripper ( Fig. 4 ). Machines used for these operations have capacities to 8900 kN (1000 tonf). Fig. 4 Stretch-forming...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005102
EISBN: 978-1-62708-186-3
... all hydraulic. Hydraulic shears are designed with a fixed load capacity. This prevents the operator from shearing material that exceeds capacity and, therefore, saves costly damage to the machine structure; this is a basic advantage of hydraulic shears. The total load during shearing is related...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005268
EISBN: 978-1-62708-187-0
... components of a horizontal cold chamber die casting machine. Items to the left of the front plate are considered part of the clamp end, and items to the right of the front plate are considered part of the shot end. The machine is powered by a high-performance hydraulic system, consisting of pumps, cylinders...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001378
EISBN: 978-1-62708-173-3
... oxides form. Many devices have been developed for cold pressure butt welding. There are hand-held tongs for wires in diameters up to 1 mm (0.04 in.) and even an oil-hydraulically powered welding machine with a programmable device to interface with a multiple-step upsetting system. The largest known...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
... tribological attributes and for its cooling power, and it can be either oil-base or aqueous. It can be applied to the die inlet, the wire, and often also to the capstan, or the entire machine can be submerged in a bath. When the machine operates with slip, the lubricant must reduce wear of the capstan while...
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
... the radial compressive forces, was supported at each end by simple bearings, and was rotated through a “V”-drive pulley on its 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...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005266
EISBN: 978-1-62708-187-0
... be placed in the same die half. Tolerances are a function of casting size and projected area. Features across parting lines have added variation because of the accuracy of repeated die closing. Die temperature, machine hydraulic pressures, and die cleanliness are the principal factors to be controlled...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001486
EISBN: 978-1-62708-173-3
... can be equipped with simple straight blades ( Fig. 5 ) or with two or more short blades having specific shapes. Guillotine iron workers are actuated mechanically, hydraulically, or pneumatically. Hydraulic and pneumatic machines are lighter in weight for a specific shearing power, are more...