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workpiece-holding system

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003596
EISBN: 978-1-62708-182-5
...Abstract Abstract This article discusses four subsystems of the electrochemical machining (ECM) system: power source, electrolyte cleaning and supply system, tool and tool-feed system, and workpiece and workpiece-holding system. It describes the theory of ECM and provides information...
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
..., is not a fixture. The specific purpose of a fixture is to locate and hold a workpiece against the machining forces. A jig differs from a fixture in that it not only locates and holds a workpiece, but also guides the tool to ensure accurate positioning. Thus, fixtures are more open in design than jigs to facilitate...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002147
EISBN: 978-1-62708-188-7
... a manufacturing system, consisting of one to several workstations and having some degree of capability for automatic: Loading and unloading of the workstations with workpieces Tool changing at workstations Transfer of workpieces (and sometimes tools) between workstations Scheduling and control...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002157
EISBN: 978-1-62708-188-7
... and forth through the passages formed by the workpiece and tooling. It discusses the major elements of an AFM system, such as machine, tooling, and abrasive media. The article provides information on polishing, radiusing, edge finishing, and surface finishing capabilities of the AFM. It concludes...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002161
EISBN: 978-1-62708-188-7
... rate, and metallurgy of the workpiece itself. The more reactive the workpiece is to the ECG decomposition, the more difficult it is to hold close tolerances. As a result, metals that are very reactive, such as alloys with high chromium content, require mild electrolytes that will not produce great...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003597
EISBN: 978-1-62708-182-5
.... This problem has been successfully resolved by the use of thin, dummy workpieces at the bottom. Use of dummy workpiece ( Fig. 2 ) at the top surface of the workpiece overcomes the problem of nonuniform diameter at the tool entry side due to stray cutting. Fig. 2 System for electrochemical deep-hole...
Image
Published: 01 January 2006
in producing a smooth, exruded edge on the part. For thick parts, a vee-ring is also raised on the face of blanking plate. (c) The blanking force is applied to the stock by the ram, at the same time vee-ring constrains the movement of extra material. During this portion of the cycle, the counterpunch holds More
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002163
EISBN: 978-1-62708-188-7
..., power supplies, electrolyte system, part holding fixtures, cathode holders, and cathode tubes. Key process parameters for electrostream and capillary drilling are also discussed. capillary drilling cathode holders cathode tubes electrolyte system electrostream power supplies tooling...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005633
EISBN: 978-1-62708-174-0
...-transformer combination, which consists of a low-impedance welding transformer, a stationary platen, and a movable platen with clamping dies to position and hold the workpieces. The seven major components include: A machine bed that has a fixed platen attached to it, as well as a set of electrically...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005158
EISBN: 978-1-62708-186-3
... motion to machine an orbitally undersized reverse impression of the forming tool into the workpiece. This system is suitable even for very large electrodes. One consideration to keep in mind, however, is that, due to the orbital motion, some details (particularly internal corner radii that are smaller...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003207
EISBN: 978-1-62708-199-3
... of the frame, fixtures, and other devices that hold and clamp the workpiece and apply the welding force Specifications for resistance welding equipment have been standardized by the Resistance Welder Manufacturers Association (RWMA), and specifications for controls are issued by the National Electric...
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
... Equations 2 and 3 determine the net power required for actual shearing of the workpiece. The amount of power needed to operate the hold-down system and to overcome friction must be added to net power. Friction depends on the design of the shearing machine and the knife, type of bearings, alignment...
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001369
EISBN: 978-1-62708-173-3
...), and it is not subject to vacuum chamber limitations. Because welding is not done within the confines of a vacuum environment, the maximum practical “standoff,” the working distance between the bottom of the electron beam column and the top of the workpiece, currently used on EBW-NV systems is limited to approximately...
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
... tension-control system used in stretch forming The tension control uses two inputs in a null system for its output signal. One input comes from a load cell that gives a signal proportional to the stretch force on the workpiece. The other signal comes from a potentiometer that measures...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006423
EISBN: 978-1-62708-192-4
...Abstract Abstract Drawing is a process by which a workpiece is pulled against a die to produce a wire, bar, or tube with smaller cross sectional area compared with the initial stock. This article discusses the variables that affect the drawing process and the parameters that influence friction...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... on processing conditions such as spray-nozzle characteristics, water pressure and temperature, duration of rinse cycle, surface condition of the workpiece, and inherent removal characteristics of the penetrant employed. Postemulsifiable System High-sensitivity penetrants that are not water washable...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005924
EISBN: 978-1-62708-166-5
... treating process. For example, nests that hold the parts may need to be made from nonmagnetic materials, or even cooled during and after hardening. Workpieces must be positioned positively with the degree of accuracy needed for each step of the process. Mechanized systems may need proximity devices...
Book Chapter

By Pel Lynah
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002154
EISBN: 978-1-62708-188-7
..., fewer than ten). A typical machine ( Fig. 6 ) consists essentially of two 150 mm (6 in.) long cast iron rolls (one 150 mm, or 6 in., and one 75 mm, or 3 in., in diameter) and a reciprocating device for holding down the workpiece and controlling size. The end of the fiber stick that holds down...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006440
EISBN: 978-1-62708-190-0
... there are several types available (forms A, B, C, and D). When applied, a developer forms a fine surface film, which creates a system of very fine, random capillary paths. If the penetrant contacts the powder, the powder then competes with the freshly cleaned surface of the workpiece for the penetrant as it flows...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003981
EISBN: 978-1-62708-185-6
... of forging dies. Auxiliary Tools Auxiliary tools available for the roll forging process are limited to automatic billet loading mechanisms, programmable automatic transfer mechanisms of the workpiece through the roll die impressions, and quick die clamping and changing systems that hold the dies onto...