150 TON HYDRAULIC 4-POST PRESS
The end customer, and Medical device manufacturer required a special 150 ton 4-post press. The press needed to have very accurate control/repeatability regarding force generated (+/- 75 lbs) on a 150 ton press. The application was a “clean room” (class 100,000) environment, so special consideration was needed regarding possible contamination. The press would be integrated into a work cell with a conveyor moving the product from one piece of equipment to another. Neff needed to supply a moving work support that automatically positioned itself underneath the platen for this powder compaction application. The press needed to have proportional speed and tonnage control with programmable dwelling and controls which were Ethernet compatible and the ability to set compression tonnage from a remote PLC.
Neff supplied a H150-15M hydraulic 4-Post press with several unique criteria. The bed size was 46″ L-R x 12″ F-B with 24″ (16″ net with movable work support) of daylight. Protective bellows were put on the cylinders, guide pins, bearings, etc to meet the clean room criteria. Neff supplied an interlocking guided “wedge” design work support system. The lower wedge was driven by a horizontally mounted auxiliary hydraulic cylinder, which raised the upper wedge (which raised the work piece). Speed control for the horizontal cylinder was included and proximity sensors were integrated to ensure the wedges were in the proper position for both pressing and conveying. Neff also provided a 6″ x 6″ pressing head that was made of A-2 tool steel, ground flat within .0005” total and polished to a finish of 4-6 RMS, per the customer specification. Neff included its standard Automatic Single Stroke option which allows an external signal to trigger the press to actuate.