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Presses

Laboratory Press

  • It does not test, it produces the specimenIt is not a testing machine; it presses the part to be tried under controlled conditions.
  • It records the process and delivers the recipeHow many degrees, what pressure, how long — which process gave the best part is read off the data.
  • Precise temperature and cooling controlFor composites, air, air+water or hot oil cooling solutions are built into the machine.
  • Time-based recording with a Siemens S7-1200 PLC and SCADA

What is a Laboratory Press?

A laboratory press does not perform tests; it produces the part to be tested. It presses the same material at different temperatures, pressures and times and records the parameters of every trial. The parts are then tried, and which process gave the best result is read off the data.

The process that is found becomes the recipe for series production; the machine must therefore work very precisely and pass on the data in full. It is not a production machine — on request it can also be supplied together with its mould.

Is this press right for you?

Suitable

  • Recipe and process development: which parameter gives the best part
  • R&D specimens and pre-series part production
  • Composite, rubber and thermoset trials
  • Validation before moving to series production

Defence Industry — parts typically produced in this sector

These images are representative — they show the shape of the part; they are not the exact parts we produce. If you find one that resembles your own part, send us its drawing and we will tell you which press it is made on. Send your part drawing

  • Laboratory sample and pre-series part — representative imagerepresentative
    Laboratory sample and pre-series part

Metalworking — parts typically produced in this sector

  • Laboratory sample and pre-series part — representative image (view from the opposite side)representative
    Laboratory sample and pre-series part

For those who want the detail

Why it is a specimen press, not a 'test press'

Here is the point that gets confused: the press does not perform tests. The press produces the part on which you will perform them. To learn how a material behaves, parts are pressed from the same material by different processes and those parts are then tried. The answer being sought is not 'how much did the material withstand' but 'which process gave the best result'.

For that, the temperature, pressure and time of every trial must be held precisely on the press and put on record. A Siemens S7-1200 PLC and SCADA record the process parameters against time; the machine can be monitored remotely from a computer or a phone. The parameters under which the specimen in your hand was pressed can thus be read immediately, and the search converges on the ideal process.

When the ideal process is found, what you have is not a part but a formula: the recipe for large-scale production. That recipe is transferred to the production press. This is why a laboratory press is deliberately small — it is built to make decisions, not to press quantities.

With composite materials, cooling is part of the process too. Depending on the need, air, air+water or hot oil cooling solutions are built into the machine. The press can also be supplied together with the mould for the part to be tried.

  • The press does not test; it produces the specimen to be tested.
  • The temperature, pressure and time of every trial are recorded against time.
  • The output is not a part but the process recipe to be transferred to series production.
  • Air, air+water or hot oil cooling options for composites.
  • Remote monitoring: the machine is followed from a computer or a phone.
  • Supplied together with its mould on request.

Rigid frame joined with prepared weld bevels

Across ÖZKOÇ — not a feature unique to this press

When the form or the embossing does not come out, the toolmaker is blamed straight away. More often than not the die is not the cause: the press frame deflects under load and the two halves of the die no longer seat fully on each other. The share the frame has in this is usually unknown on the buyer's side, because it is written in no catalogue.

When ÖZKOÇ builds the frame as a welded construction, it joins the crossbeams and the plates BY PREPARING A WELD BEVEL. There are many companies in the sector that join without preparing a bevel; the weld then stays on the surface only. Once the bevel is prepared, the weld penetrates the cross-section and the frame resists deflection under load.

This holds for every frame type, monoblock or column-type — it is not an option that depends on the type of press, it is ÖZKOÇ's manufacturing discipline.

  • Crossbeams and support plates are joined with a prepared weld bevel.
  • The weld does not stay on the surface, it penetrates the cross-section; the frame does not deflect under load.
  • The same discipline is applied whether the frame is monoblock or column-type.

Ram parallelism system

Across ÖZKOÇ — not a feature unique to this press

On wide and asymmetric parts the load bears on one corner of the ram; the ram comes down slightly tilted and one corner of the part turns out thicker than the other. The result: excess material, uneven strength, unnecessary heat and cycle time.

In the ram parallelism system designed by ÖZKOÇ itself, four counter-pressure cylinders bring the ram down parallel to the lower plate. The difference in thickness between the corners drops to a minimum; material is saved, and the homogeneity of the part keeps the strength where it is wanted.

The same arrangement works in cutting as well: at the instant the shear occurs, the counter-pressure cylinders absorb the shock, maintain parallelism and extend the life of the cutting die.

  • Four counter-pressure cylinders bring the ram down parallel to the lower plate.
  • On a wide and asymmetric part the difference in thickness between the corners drops to a minimum.
  • Material savings + homogeneous strength.
  • In cutting it absorbs the shock and extends die life.

This press is used in these sectors too