3 Fundamentals of press design

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266 Sheet metal forming and blanking Outlook Further developments in the field of control engineering in large-panel presses will be determined by technical and economic factors and also by organizational requirements. Initially, the innnovation in automation components is relevant. Nowadays, low-cost small control systems with communication capability, fast field bus systems and decentral input/output modules are available. This opens up the possibility for further decentralization of control systems, and consequently for a substantial reduction not only of costs and system complexity but also of input for installation, start-up and troubleshooting. Analogue technology, in particular in controllers for electrical and hydraulic drive systems, is being replaced by digital technology. This permits the parameterization of controllers by means of data transmis- Fig. 4.4.49 Overview of process signals for the drawing process using a four-point draw cushion: slide displacement (red), draw depth (blue), set pressure value (red rightangled curve), actual pressure value (green right-angle curve), cursor (yellow) Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998
Sheet metal forming lines sion following a change of requirements or after exchanging defective components. The benefits here include shorter repair times and thus an increase of press up-time. Highly-dynamic electrical feed systems in conjunction with efficient control and regulation systems for movement synchronization are increasingly replacing mechanically coupled drive systems. This development not only allows mechanical mechanisms to be simplified and flexibility to be further increased, but in certain cases also enhances productivity. The changes taking place in the field of work organization in many stamping plants are imposing new demands, in particular on the line control center. Production lines are being managed increasingly by independently acting teams of employees on their own responsibility. These teams require information on site related to production and machine data, to production quality, waiting production jobs and maintenance work to be carried out. Only with this information at their fingertips are team members in a position to optimize the productivity of their line and to assume control functions on the production level. As a result, machine and production data acquisition systems such as those described above will continue to be more extensively used and the functional scope of their application extended to cover ever wider fields. Multi media-based production line information systems which permit fast, selective access to stored line documentation and additional information on the elimination of faults and routine maintenance will be integrated in the future into the press control center. Using these systems, it will also be possible for operating personnel to enter their own findings into the information data base and so develop their own experience data base. In general terms, future developments in the field of control engineering will concentrate on reducing complexity and on the development of more efficient systems for repair and maintenance support to reduce the costs of press control and increase production line uptime. Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998 267
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Metal Forming Handbook /Schuler (c)
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123 METAL FORMING Metal Forming Han
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Preface Following the long traditio
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Contributors ADAM, K., Dipl.-Ing. (
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Contents Index of formula symbols .
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Contents 3.6.5 Measures to be under
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Contents 5.3 Component development
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Index of formula symbols � rib an
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Index of formular symbols d inner d
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Index of formular symbols p G avera
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1 Introduction Technology has exert
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Introduction Fig. 1.1 L. Schuler, M
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2 Basic principles of metal forming
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Methods of forming and cutting tech
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2 Basic principles of metal forming
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Basic terms in which � 1 is defor
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Basic terms cation of an exterior f
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Basic terms fracture, this characte
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3 Fundamentals of press design 3.1
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Press types and press construction
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Mechanical presses , distance s[m]
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Mechanical presses stress on the fr
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Mechanical presses stroke [mm] 900
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Mechanical presses This offers a nu
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Mechanical presses or bottom mounte
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Mechanical presses In crossbar tran
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Mechanical presses with a long serv
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Mechanical presses Fig. 3.2.9 Drive
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Mechanical presses Overload safety
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Mechanical presses Slide cushion So
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Mechanical presses imum pneumatic p
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Hydraulic presses Design of the dri
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Hydraulic presses pumps suspended i
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Hydraulic presses pressure in the p
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Hydraulic presses F 4 I P (F ) max
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Hydraulic presses are two variation
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Hydraulic presses presscrown retain
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Changing dies to a weight of 3 t pr
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Changing dies gearwithguidinggroove
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Changing dies are changed in solid
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Changing dies hydraulic clamping me
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Press control systems 3.5.3 Operati
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Press control systems 3.5.4 Structu
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Press control systems The communica
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Press control systems Fig. 3.5.5 PL
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Press control systems Fig. 3.5.7 Sw
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Press control systems Other approac
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Press safety and certification 3.6.
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Press safety and certification with
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Press safety and certification - st
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Press safety and certification Manu
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Press safety and certification pres
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Press safety and certification 3.6.
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Press safety and certification tion
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Casting components for presses Fig.
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4 Sheet metal forming and blanking
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Principles of die manufacture icall
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Principles of die manufacture becau
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Principles of die manufacture go-ah
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Principles of die manufacture produ
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Principles of die manufacture Fig.
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Principles of die manufacture a b c
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Principles of die manufacture the p
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Metal Forming Handbook / Schuler (c
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Principles of die manufacture 0.00
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Principles of die manufacture blank
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Principles of die manufacture how i
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Principles of die manufacture spott
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Deep drawing and stretch drawing me
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Deep drawing and stretch drawing In
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Deep drawing and stretch drawing ac
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Deep drawing and stretch drawing 3
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Deep drawing and stretch drawing 20
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Deep drawing and stretch drawing β
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Deep drawing and stretch drawing Ex
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Deep drawing and stretch drawing Bl
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Deep drawing and stretch drawing bl
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Deep drawing and stretch drawing Ta
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Deep drawing and stretch drawing Au
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Deep drawing and stretch drawing Ti
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Deep drawing and stretch drawing Hi
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Deep drawing and stretch drawing -
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Deep drawing and stretch drawing -
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Deep drawing and stretch drawing se
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Deep drawing and stretch drawing fo
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Deep drawing and stretch drawing pu
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Deep drawing and stretch drawing ag
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Coil lines Fig. 4.3.1 Coil line for
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Coil lines Fig. 4.3.3 Compact desig
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Sheet metal forming lines In the ca
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Sheet metal forming lines Fig. 4.4.
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Sheet metal forming lines ing of th
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Sheet metal forming lines (Fig. 4.4
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Sheet metal forming lines The two l
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Sheet metal forming lines 1,860mm a
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Sheet metal forming lines ver’s c
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Sheet metal forming lines Fig. 4.4.
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Page 243 and 244: Sheet metal forming lines individua
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Page 247 and 248: Sheet metal forming lines In modern
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Page 253 and 254: Sheet metal forming lines Within th
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Page 257 and 258: Sheet metal forming lines Press lay
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Page 261 and 262: Sheet metal forming lines Draw cush
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Page 279 and 280: Sheet metal forming lines Local ope
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Page 283 and 284: Sheet metal forming lines Table 4.4
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Page 289 and 290: Blanking processes to complete brea
Page 291 and 292: Blanking processes Fig. 4.5.5 Top-t
Page 293 and 294: Blanking processes 56.8% 65.0% 67.4
Page 295 and 296: Blanking processes a configuration
Page 297 and 298: Blanking processes flat punch U bev
Page 299 and 300: Blanking processes Using these equa
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Page 303 and 304: Blanking processes 0.18 10 10.36 27
Page 305 and 306: Shearing lines Fig. 4.6.1 Slitting
Page 307 and 308: Shearing lines The blanking process
Page 309 and 310: Shearing lines Blanking presses for
Page 311 and 312: Shearing lines 4.6.3 High-speed bla
Page 313 and 314: Shearing lines mass counterbalance
Page 315 and 316: Shearing lines Fig. 4.6.9 Influence
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Page 323 and 324: Shearing lines Fig. 4.6.17 Flexible
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Shearing lines The stripper plate i
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Shearing lines Fig. 4.6.32 Examples
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Shearing lines - provision of all i
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Shearing lines Fig. 4.6.35 Machine
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Shearing lines Fig. 4.6.37 Failure
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Shearing lines Structure of the ele
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Shearing lines interference, or whe
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Fine blanking - smaller dimensional
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Fine blanking f i blanking force F
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Fine blanking blanking force F s I
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Fine blanking plate of the die, whi
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Fine blanking case hardening nitrit
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Fine blanking not been soft anneale
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Fine blanking it is also possible t
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Fine blanking Example: We wish to p
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Fine blanking s h S1 tearing E frac
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Fine blanking punches, as well as t
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Fine blanking subsequently quenched
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Fine blanking Fig. 4.7.22 Two-stati
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Fine blanking Blanking plate 2 is l
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Fine blanking 1 2 5 6 3 Fig. 4.7.25
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Fine blanking blankingpunch 1 2 inn
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Fine blanking vee-ring piston diehe
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Fine blanking measuring the pressur
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Fine blanking pallets reach the sta
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Bending Table 4.8.1 gives the small
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Bending Accordingly, the necessary
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Bending Example: You wish to bend a
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Bending F F b or b 2 b ⋅s ⋅R =
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Bending Fig. 4.8.7 Roll forming: ro
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Bending Fig. 4.8.13 Hat sections Fi
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Bending Table 4.8.3: Material coeff
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Bending The roll stand for profile
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Bending frame Fig. 4.8.23 Work shaf
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Bending Fig. 4.8.25 Roller straight
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Bending W W t t W Wma s Fig. 4.8.28
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4 Sheet metal forming and blanking
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Organization of stamping plants Whe
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Organization of stamping plants Tab
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Organization of stamping plants lic
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Organization of stamping plants bat
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Organization of stamping plants Tab
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Organization of stamping plants ele
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Organization of stamping plants une
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5 Hydroforming 5.1 General One of t
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Process technology and example appl
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5 Hydroforming 5.3 Component develo
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Component development a component d
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Component development 100% D D 75%
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Component development Pure expansio
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Die engineering diameter and stroke
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5 Hydroforming 5.5 Materials and pr
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Materials and preforms for producin
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Presses for hydroforming Controllab
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5 Hydroforming 5.7 General consider
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General considerations inward hole
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6 Solid forming (Forging) 6.1 Gener
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General lets that can be produced t
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General Fig. 6.1.4 Examples of coin
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General Table 6.1.1: Comparison bet
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6 Solid forming (Forging) 6.2 Benef
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Benefits of solid forming 6.2.2 Wor
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Benefits of solid forming range”
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Benefits of solid forming sions fro
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Benefits of solid forming Where no
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Materials, billet production and su
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Formed part and process plan requir
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Formed part and process plan 6.4.2
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6 Solid forming (Forging) 6.5 Force
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Force and work requirement d 0 d 2
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Force and work requirement For die
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Force and work requirement The mini
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Force and work requirement dies) (c
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Part transfer There is a broad rang
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Part transfer For cold forming proc
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6 Solid forming (Forging) 6.7 Die d
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Die design wedge adjustment auxilia
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Die design Table 6.7.1: Modular sys
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Die design Fig. 6.7.5 Shearing die
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Die design for radial stress � r
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Die design The off-center applied f
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Die design Table 6.7.4: Heat treatm
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Die design Powder metal-manufacture
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Die design ledeburitic 12 % chromiu
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Die design system integrated into b
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6 Solid forming (Forging) 6.8 Press
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Presses used for solid forming mult
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Presses used for solid forming slid
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Presses used for solid forming Fig.
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Presses used for solid forming duct
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Presses used for solid forming 6.8.
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Presses used for solid forming tati
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Presses used for solid forming adeq
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Presses used for solid forming Embo
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Presses used for solid forming ment
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Presses used for solid forming feed
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Presses used for solid forming hopp
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Presses used for solid forming coin
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Presses used for solid forming Univ
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Presses used for solid forming Meda
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Presses used for solid forming CNC-
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Presses used for solid forming forc
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Index A.S.T.M.-standard 451 abrasio
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Index cylinder -, counterpressure 4
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Index flying shear 288 flywheel 51-
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Index modified top drive 205-207 mo
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Index sand blasting 460 sandwich co
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Index washing/cleaning machine 219
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3 Fundamentals of press design

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