David Alkire Smith

Fundamentals Of Pressworking

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 Fundamentals of Pressworking

  Fundamentals of Pressworking (DVD included)
Pull all your pressworking elements together 

416 Pages · 251 illustrations · 99 contributors

For effective pressroom operation, it's not enough to merely focus on the presses and dies. Fundamentals of Pressworking pulls all pressworking elements together, providing an essential overall view of the technology for operators and managers. It covers such subjects as press types, proper maintenance, tooling and safety factors  as well as basic pressworking operation. It even touches on the history of presses. As comprehensive as it is, however, the book is true to the word "fundamentals" in its title. It is easy to read and valuable for those with all levels of pressroom experience.

1.   Historical Press Development
evolution of power presses and hydraulic presses
2.   Mechanical Press Types and Nomenclature
construction of gap-frame and straight side presses, guide to identifying press components, clutch types and adjustment, clutch and brake specifications, press motors, variable speed drive systems, counterbalance system components, setting counterbalance pressures and maintenance press construction, electrical controls for maintenance and safety, integrating press control systems
3.   Gap Frame Presses
operational advantages, measuring stiffness and angular deflection, tie-rod installation, bulldozer applications
4.   Straight side Presses
force capacities and bed sizes, mechanical vs. hydraulic, overload protection systems, slide connections, single connection presses, two-point presses, slide adjustment devices, advantages of under drive presses
5.   Hydraulic Presses
advantages and limitations, unique features, types of overload protection, force capacities and requirements, press speeds, guidelines for selecting hydraulic presses over mechanical, press accessories, quality factors, safety and ergonomics, programmable hydraulic blankholder force controls
6.   Basic Die Operations
shearing, cutting clearances, cutting force factors and calculations, energy requirements, shaving, solutions to common punch-head breakage problems, cutting force reduction, pressure pads and strippers, compound dies, bending and flanging, bend allowances and pressures, drawing and stretching, stamping analysis, circle grid analysis, forming limit diagrams
7.   High Speed Presses and Die Operations
dynamic balance and inertia factors, snap-through energy release, bearings and lubrication, progressive die operations
8.  Transfer Presses and Die Operations
dual-axis and tri-axis feeders, drives, swing-out transfer bar carrier assemblies, multiple slide straightside presses, automatic die change, die design for transfer presses
9.   Press Installation and Sensing Systems
press leveling, testing and adjusting press beds, force monitors and load measuring, electronic strain sensors, determining force by measuring strain, load cell testing and operation, waveform signature analysis, diagnosing hydraulic overload, limit switches, contact sensors, inductive proximity sensors, photoelectric sensors
10.  Press Inspection and maintenance
inspection practices for preventive maintenance, sample inspection form, lubrication system maintenance and troubleshooting, checking and measuring alignment and bearing clearances, typical bearing clearance allowances, selecting press testing methods, slide tracking, pre-stressing tie-rods, load cell testing and calibration, analysis of press failure causes, repair vs. replace criteria
11.  Press Safety and Auxiliary Equipment
power lockout, holdout or restraint devices, pullout devices, barrier guards, light curtains, two-hand controls, safety distance requirements, coil feeders, decoiling systems, quick coil change, stock straighteners, roll feeder setup and accuracy, hitch feeds, starting progressive dies strips, chute and conveyor types, part and scrap container types, air blow off
12.  Diesetting Principles and Techniques
converting diesets from internal to external, die storage and retrieval systems, die transport methods, using forklifts and die carts, success factors for quick changeovers, prestaging racks, centerline keyway locating, jigs and templates for adapting dies, tapped bolster holes, T-slot layouts, locating to the press ram
13.  Establishing Good Clamping Practices
safe fastener standards, recommended fasteners, clamping methods to avoid, selecting clamps, standardizing clamping heights, review of clamp design advantages and applications, operating dies on parallels, preventing process variation problems related to parallels, attaching parallels in relation to T-slots, procedures for establishing common die shut and pass heights, setting draw dies, adjusting knockout bars
14.  Die Materials and Lubricants
tool and die steel characteristics, heat treatment of die steels, cryogenic treatment, controlling dimensional change, die welding, die surface coatings and treatments, powder metallurgy, die structural materials and die irons, nonferrous and nonmetallic die materials, cemented carbides, guidelines for choosing lubricants, pastes, dry films, soaps, advantages of waterbased lubricants, cleaning and finishing requirements, lubricant clarification and disposal
15.  The Future of Metal Stamping
summary of good stamping management practices, economic and production advantages of metal stampings for specific industry applications, recyclability

By D. Smith
416 pages, hardcover, ©1994, $76.00 (quantity and member discounts may apply)
Published by Society of Manufacturing Engineers, Dearborn, Michigan ISBN 0-87263-449-3
Available from major booksellers and:
SME 1-800-733-4763    

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