3 Fundamentals of press design

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202 Sheet metal forming and blanking electricmotor formaindri e mainslide secondary slide clutch-brake combinationwith compactdri e dynamicbalancingunit Fig. 4.4.4 Components and design of a high-performance transfer press eccentricshaft inrollerbearings dri eofe ector de ice transferdri e rollercage withgibbushes gearwith transferdri e gibcolumn e ectorde ice damping element latter is also mounted in roller bearings and is used to cut the blank from the coil stock. A zigzag feed device is used to improve material utilization (cf. Fig. 4.5.7 and 4.5.8). In order to prevent any unwanted effects of the blanking impact on the drawing operation carried out by the main slide, the drive of the secondary slide by the eccentric shaft is performed with a phase shift. A counterbalance mounted eccentrically in the center of the drive shaft ensures smooth running of the high-performance transfer press. For this reason, simple press installation is possible by means of damping elements. Precise slide guidance is provided by four hardened gib columns with roller cages and gib bushes on the forming level and at the top of the slide. This system ensures optimum static and dynamic rigidity on the horizontal plane, so enhancing the service life of dies (cf. Fig. 3.1.5). The rigid press body is a single-part welded structure, ensuring minimal tilt- Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998
Sheet metal forming lines ing of the slide even in the event of eccentric loading. This is an important advantage which is particularly important during coining work. Hybrid presses Mechanical hydraulic presses, also known as hybrid presses, represent a new development in the field of press engineering (Fig.4.4.5). This type of press combines the benefits of mechanical and hydraulic presses. The hybrid drive system allows gentle impact of the top die on the workpiece, and also optimum control of the force exerted during the forming process. In contrast to hydraulic presses, hybrid presses offer higher output due to their mechanical basic drive system. Hybrid presses are configured for both deep drawing and also complex stamping, blanking and coining work, combining good flexibility and equipment availability with high output. As in mechanical universal presses, the top slide is driven by the electric motor via the compact drive system, eccentric shaft and connecting rod (pitman aim) with eccentric bushings for adjustable stroke Fig. 4.4.5 Hybrid press (nominal press force 3,150 kN) Metal Forming Handbook / Schuler (c) Springer-Verlag Berlin Heidelberg 1998 203
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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 Fig.
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Principles of die manufacture how i
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Page 177 and 178: Deep drawing and stretch drawing me
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Page 185 and 186: Deep drawing and stretch drawing 20
Page 187 and 188: Deep drawing and stretch drawing β
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Page 193 and 194: Deep drawing and stretch drawing bl
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Page 215 and 216: Coil lines Fig. 4.3.1 Coil line for
Page 217 and 218: Coil lines Fig. 4.3.3 Compact desig
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Page 225 and 226: Sheet metal forming lines (Fig. 4.4
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Page 237 and 238: Sheet metal forming lines 4.4.4 Des
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Page 253 and 254: Sheet metal forming lines Within th
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Page 261 and 262: Sheet metal forming lines Draw cush
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Sheet metal forming lines ing parts
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Sheet metal forming lines - efficie
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Sheet metal forming lines - Automat
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Sheet metal forming lines Local ope
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Sheet metal forming lines modules a
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Sheet metal forming lines Table 4.4
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Sheet metal forming lines Fig. 4.4.
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Sheet metal forming lines sion foll
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Blanking processes to complete brea
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Blanking processes Fig. 4.5.5 Top-t
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Blanking processes 56.8% 65.0% 67.4
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Blanking processes a configuration
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Blanking processes flat punch U bev
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Blanking processes Using these equa
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Blanking processes x S = 66. 6 (s a
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Blanking processes 0.18 10 10.36 27
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Shearing lines Fig. 4.6.1 Slitting
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Shearing lines The blanking process
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Shearing lines Blanking presses for
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Shearing lines 4.6.3 High-speed bla
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Shearing lines mass counterbalance
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Shearing lines Fig. 4.6.9 Influence
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Shearing lines Fig. 4.6.11 Rotor an
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Shearing lines Fig. 4.6.13 Complete
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Shearing lines Fig. 4.6.15 Complete
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Shearing lines Fig. 4.6.17 Flexible
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Shearing lines which run, backlash-
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Shearing lines that up to 150 strok
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Shearing lines Fig. 4.6.21 Automati
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Shearing lines Fig. 4.6.24 Passenge
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Shearing lines F F resistance weldi
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Shearing lines In contrast to conve
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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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