ECCENTRIC PLUNGER GUIDED & GEAR-DRIVEN CRANK TYPE MECHANICAL STRAIGHT SIDES

Jun 23, 2022
Sutherland News

This news article focuses on the benefits of our EHW / Eccentric Plunger Guided Series. The four standard questions asked when companies are acquiring capital equipment are price-quality-delivery time-service. The evaluation process is critical, and with Sutherland Presses' 75 years of experience, we offer a wealth of knowledge that pays dividends to our customers.

This article will address key areas when evaluating your next press line purchase.

Additional items to be considered during the acquisition process are: Controls and interconnectivity to auxiliary devices, connected enterprise for data collection, customizable & scalable, safety, reduced unplanned downtime, ease of service and maintenance practices, quality, and brands of purchased components, warranty, spare parts, improved die life, and more.

Our design team is committed to excellence in areas such as frame elongation strength, minimal deflection, tight tolerances, repeatability, durability, and ease of service over the life of your presses. We offer single point small bed presses from 80 to 1200-ton, double point wide beds from 100 to 1600 ton and four-point large beds from 800 to 2000 tons.

The photo at right depicts three different drive and connection point systems that drive the slide up and down during the working stroke.

Right = EHW Eccentric Plunger Guided $$$

Middle = SP2 Front to Back Gear Driven Crank $$

Left = KS2 Center Drive Gear Driven Crank $$

All presses incorporate the same reliable purchased components; bearings, lubrication, pneumatic, hydraulic, electrical, I-PRESS® & Automation controls.

Our press design starts from the inside out. We begin with finite element analysis for strength and rigidity / FEA. We then optimize the press specifications and access to all serviceable parts, components, protected wireways, and lubrication line distribution.

As you can see on the left, our Super-Vision process comes first, then 3D, and on to the finished product.

Nobody builds them like we do. Period.

CENTER LINE FORCE DISTRIBUTION TECHNOLOGY & INSIDE-OUT SYSTEMS DESIGN

We achieve vertical tonnage delivery by having our main gears on the centerline, sandwiched by dual pitmans. The pitmans connect to the plungers via an on-center wrist pin connection.

With the large plunger guide housings and eight-point full-length taper wedge slide guides, you get the most accurate repeatability of the slide to bolster or upper and lower die sets.

Conventional straight sides that have rotating connecting rods have side or forward thrust loads due to directional forces that are driving the slide. The payback on vertical tonnage delivery is longer die life, less die maintenance and tighter tolerance parts.

Our inside-out design approach allows us to consider the best placement of all components and systems while keeping service access in mind.

Our filtered recirculating automatic lubrication system, (shown in blue), illustrates the main tank, filters, pump, and pressure regulators are mounted on the rear of the press bed and covered with a protective guard with access doors and panels.

The horizontal, large tank mounted on the front of the crown is the air supply (shown in green) for the silver twin air counterbalance cylinders, which equalize upper die weights; green shows the air supply and distribution system. The vertical smaller tank mounted on the rear of the crown is the air supply tank for the combination clutch and brake and flywheel brake.

This inside-out approach allows us to design the fabricated steel frame with access panels needed to simplify maintenance.

FRAME STRUCTURE / FORGE TECHNOLOGY, THICK STEEL PLATES & FEWER WELDS

The evolution of the EHW Series over the last 15 years has proven to increase die-life compared to other premium press builders. It all started by taking our thick plate forge press frames and designing the same principles into our EHW progressive die stamping presses.

As you can see in the photos of the lower bed sections, we use 10”+ thick steel plates to resist frame elongation and deflection, allowing us to have fewer welds when compared to conventional presses.

The yellow slide body below also incorporates the thick plate design on the two-center, left to right aprons, where the plunger guides are connected.

The crown has a double-wall thickness and left-to-right steel plates, as indicated by the orange stripes. The short shafts that drive the dual pitman’s and on-center main gears are removable from the top of the press.

The high-speed pinion drive shaft and combination clutch/brake system are removable from the rear of the press. For ease of access and service, the safety maintenance platform is mounted on the rear of the press.

SAMPLE EHW INSTALLATIONS

I-PRESS® & AUTOMATION CONTROL SYSTEMS

Our patented I-PRESS® & AUTOMATION control family is another area that sets us apart from other press suppliers.

Sutherland Presses offers the safest, most intuitive, and fully featured control available for press users, built on a Rockwell AB hardware and software platform with the option for Siemens or Omron that comply with our customer's electrical standards.

The I-PRESS® family includes mechanical stamping presses, servo-hydraulic presses, and forge presses. Sample screens shown below are related to mechanical stamping presses.

Visit our I-PRESS® simulator for exposure to the full suite of 4.0+ control features.

I-PRESS® SAMPLE SCREENS

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Sutherland Presses

ECCENTRIC PLUNGER GUIDED & GEAR-DRIVEN CRANK TYPE MECHANICAL STRAIGHT SIDES

This news article focuses on the benefits of our EHW / Eccentric Plunger Guided Series. The four standard questions asked when companies are acquiring capital equipment are price-quality-delivery time-service. The evaluation process is critical, and with Sutherland Presses' 75 years of experience, we offer a wealth of knowledge that pays dividends to our customers.

This article will address key areas when evaluating your next press line purchase.

Additional items to be considered during the acquisition process are: Controls and interconnectivity to auxiliary devices, connected enterprise for data collection, customizable & scalable, safety, reduced unplanned downtime, ease of service and maintenance practices, quality, and brands of purchased components, warranty, spare parts, improved die life, and more.

Our design team is committed to excellence in areas such as frame elongation strength, minimal deflection, tight tolerances, repeatability, durability, and ease of service over the life of your presses. We offer single point small bed presses from 80 to 1200-ton, double point wide beds from 100 to 1600 ton and four-point large beds from 800 to 2000 tons.

The photo at right depicts three different drive and connection point systems that drive the slide up and down during the working stroke.

Right = EHW Eccentric Plunger Guided $$$

Middle = SP2 Front to Back Gear Driven Crank $$

Left = KS2 Center Drive Gear Driven Crank $$

All presses incorporate the same reliable purchased components; bearings, lubrication, pneumatic, hydraulic, electrical, I-PRESS® & Automation controls.

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