TECHNICAL SPECIFICATIONS OF MICRO-EROSION

Surface roughness up to Ra 0.05 / N2 when eroding

• Achievable tolerances of up to +/- 0.001mm when eroding

• Radii up to min. 0.02mm

• eroding of small, precise holes

• eroding bores in preparation for wire erosion

• Processing of special materials such as ceramics or hard metals.

• Other workable materials: hardened steels, steel, etc. alloyed steels, stainless steels (INOX), non-ferrous metals

• Machining in an oil bath especially for hard metals, ceramics and materials susceptible to corrosion

• Manufacture of micro clamping devices to fix micro parts for processing

MICRO-EROSION

In the area of micro-erosion, parts with the smallest wire diameters of 0.02 - 0.10mm, as well as micro-bores with the smallest hard metal electrodes from 0.10mm and larger are eroded.

• Maximum travel distances: X = 300, Y = 200, Z = 300mm

• Minimum starting hole diameter: 0.10mm / 0.15mm

• Possible starting hole diameter: 0.10mm - 3.00mm in 0.10mm steps

• Existing collets:

  • 0.10mm-1.00mm

  • 2.00mm-3.00mm

Starting hole bores serve on the one hand as preparation for the fine wire or wire EDM work and on the other hand precision bores in the smallest area can be made with a minimum starting hole diameter of only 0.10mm.

Holes can be made in hardened materials, hard metal and other electrically conductive materials.

• 4-axis precision laser cutting

• Our precision laser system significantly increases productivity in the areas of sheet thicknesses from 0.02mm to 3mm

• Surface quality up to Ra 0.80 / N6 can be achieved

• Tube processing up to Ø 80mm is possible thanks to the controlled 4-axes

• Processable materials: titanium, stainless steels, steel and alloy steels, non-ferrous metals, various plastics

• Material thickness: 0.02mm foils up to 3.00mm sheets

• Dimensional and form accuracies of +/- 0.01mm to +/- 0.02mm for sheet thicknesses up to 1.5mm

• up to 3.0mm sheet thickness = +/- 0.03mm

DIE SINKING

• Surface roughness up to Ra 0.08

• High level of detail of required shapes

• Exceptional surface quality

• Smallest corner radii even with deep depressions of less than 0.02mm

• Processing of special materials such as ceramics or hard metals.

• Other workable materials such as hardened steels, steel u. alloyed steels, stainless steels (INOX), non-ferrous metals

• 3DS surfaces offer the following advantages:

  • In terms of appearance and quality = adjustable degree of gloss of the plastic part and improvement of the anti-scratch characteristics

  • Special advantages are shown by the reduced adhesion of the plastic part in the injection mold, thus enabling increased demolding speeds.

  • Less residue accumulation in the injection mold = reduction of the cleaning and maintenance times and costs of the injection molds and thus longer spraying autonomy

With our new high-precision die sinking EDM machine for the micro range, we are able to erode the smallest, fine cavities, slots and contours of all kinds. The big advantage over conventional die-sinking EDM processes is that we can achieve the smallest corner radii of less than 0.02mm with a smaller number of electrodes. This enables us to reduce production costs and are therefore more productive.

The extremely high repeatability provides the perfect machining accuracy that is required. Due to the exceptional surface quality and the highest level of detail, even when using microelectrodes, parts with the highest demands can be eroded. By producing 3DS surfaces, an improvement in the anti-scratch characteristics of the plastic parts to be injected can be achieved, an adjustable degree of gloss of the finished plastic part. Furthermore, the 3DS surface process offers a reduction in the adhesion of the plastic part during the injection process in the tool and thus an increase in the demolding speed during injection. Due to the reduced adhesion behavior, the accumulation of residue in the mold during the spraying process can also be reduced, which reduces maintenance times and costs and increases productivity.

• High profile accuracy in the µm range

• High concentricity (0.002mm)

• Filigree contours can be realized

• Deep, fine grooves on round parts with slot widths in the centimeter range can be produced

• Finest inner radii for grooves on round parts of r = 0.05mm

• Surface qualities of Ra 0.1

• Different surfaces / wrench sizes at different angles can be set and eroded

• No breakout of the binding matrix components when dressing profile grinding wheels

• Processing of special materials such as ceramics or hard metals.

• Machining or dressing of CBN or diamond grinding wheels (the binding material and the carrier must be electrically conductive)

• Other workable materials such as hardened steels, steel and alloy steels, stainless steels (INOX), non-ferrous metals.

With our new rotation axis, a wide variety of shapes, the finest grooves, filigree profiles and small radii or surfaces on round parts can be made contactless, i.e. without any force being applied to the workpiece. The axis of rotation is always used when deep, fine grooves or small corner radii on round parts can no longer be produced by turning or cylindrical grinding.

The axis of rotation offers great advantages, especially in the area of grinding wheel dressing, in that required profiles with fine inner radii of, for example, r = 0.05mm can be created. With this process, profile accuracy in the µm range can be achieved with high concentricity. The prerequisite for this is always that the workpiece to be processed is electrically conductive. Another advantage of EDM grinding is that there is no heat input into the workpiece during the work process, which means that there are no structural changes in the material, such as those that can occur during turning or cylindrical grinding, for example.

You are welcome to call us, reach us via live chat or write us an email. We are happy to hear from them!

Stadtweg 24
Postfach 34
CH-8245 Feuerthalen

Tel: +41 52 659 59 52
Fax: +41 52 659 59 52

info@retero.swiss

Mo – Fr: 07:00-17:30