Page 30 - MetalForming September 2017

Hydraulic Presses
Column press frame
for large presses to be shipped in small- er and lighter pieces
Column
• Accessibility to all four press sides
• Limited off-center-loading capa- bility
• Generally not ideal for heated applications unless platen-die inter- faces are thoroughly insulated
• Features bushing-type (not adjustable) guiding
• Can incorporate front-to-back or
Gap-frame press
28 MetalForming/September 2017
Side-slab press frame
in. left-to-right
• Can incorporate a rolling bolster
(front-to-back only)
Tap Into Press-Builder’s Expertise
Metalformers have multiple factors to consider when specifying a press– budget, application, size, transporta- tion and facility requirements. Be aware that many frame-style options exist, so work closely with your press supplier to ensure that the frame style ultimately chosen is the best choice for your unique metalforming applications.
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left-to-right rolling bolsters
• Ability to dismantle frame allows
for large presses to be shipped in small- er and lighter pieces
C- or Gap-Frame
• Generally used for lower-tonnage applications (less than 1000 tons and typically below 300 tons)
• Low field-assembly costs because of single-piece frame
• Accessibility to the die space from three sides of the press
• Precision machining of frame due to lack of build-up tolerances associ- ated with machining multiple frame components separately
• Available for single-acting or sin- gle-acting-with-cushion metalforming applications
• May be supplied with adjustable, eight-point gib guiding or two- or four- post-style guiding.
Multi-Frame
• High stiffness and torsional rigidity for improved off-center-loading capa- bility and low deflection
• Suitable for high tonnages (to 20,000 tons) with small bed sizes (to 120 by 60 in.)
• Provides a compact design for high-tonnage presses
• Has front and back access (no side access)
• Can incorporate front-to-back shuttles or rolling bolsters
• Typically suitable for single-acting applications only
• Ability to dismantle frame allows for large presses to be shipped in small- er and lighter pieces
Side-Slab
• High stiffness and torsional rigidity for improved off-center-loading capa- bility and low deflection
• Frame components (bed, slide, crosshead and side slabs) are pre- stressed together with pre-stressing studs and nuts
• Features adjustable eight-point gib or temperature-compensated guiding
• Limited side-opening capability • Allows for larger bed sizes, to 240
Multi-frame press