What is milling?

By milling, planar surfaces, shaped surfaces perpendicular to one (eg horizontal) plane, surfaces of a rotating gear wheel (on a hobbing machine), or other workpiece surfaces are machined on a milling machine with a rotating milling machine.

The main, rotary movement in all types of milling is performed by a tool. This movement is given by the cutting speed. The secondary feed movement is usually rectilinear and is performed by the workpiece. For circular and planetary milling, it can also be rotary and can be performed by a workpiece or a tool.

Milling can be divided according to the type of cutter feed into the following variants:

Consecutive

The cutter rotates in the sense of shift, the teeth begin to cut the chip in the place with the greatest thickness, the milling is impact based, the tooth blades do not slide on the material, thus creating less heat making the cutter heats up less. It is possible to select a higher cutting speed and larger feeds, the workpiece is pressed against the support surface of the chuck by the cutting force.  This variant is suitable for milling thin-walled workpieces, with a large depth of cut, the milling machine must have as little play as possible in the feeds and guide surfaces.

Inconsistent

The cutter rotates against the direction of shift, the chip is formed from the smallest zero thickness at the beginning of the cut. The work of the cutter is without impact, i.e., more accurate in the results, therefore this alternative is suitable for forgings and castings that have a hard surface layer.

0,1 up to 6 kg

max 800 x 900 mm

from 500 pieces

Seco Industries, s.r.o. specializes in milling ductile iron castings according to EN 1563 standards (GJS-400-15, GJS-500-7, GJS-600-3, GJS-700-2 and their modifications), gray cast iron according to EN-GJL-200, GJS-250, which we produce in our foundry and is part of the company’s premises, which ensures control of production processes, quality and logistics.

We also offer capacity options for the production of supplied steel and stainless steel according to DIN 11SMn30, S235JRG1, S235JRG2, X5CrNi18- / 10, 34CrNiMo6 standards required by the costumer.

We use the Chiron DZ-15W vertical center to machine front, outer and inner surfaces with an accuracy of 0.008 mm. The main advantage of this machine is high productivity, both in terms of the possibility of hydraulic clamping of parts and machining with two spindles at once.

However, these are not all of our milling possibilities. We also have CNC centers in the machining hall, which we use for production operations such as production with combined tools, thread milling, thread forming, production of grooves, lubrication holes, internal and external recesses. Furthermore, the production of precise holes in tolerances according to ISO 2768.

Mazak FH-4800

Mazak HCN-4000

Okuma HB-500

Milling on machining centers

Milling on the CHIRON DZ-15 W milling center

It is a five-axis vertical double-spindle milling center, which is suitable for production in the following areas:

• hydraulics (cubes, control and connecting elements, valves and industrial fittings)
• engineering (general use in the field of engineering)
• automotive production (gearboxes, engine parts, housings, bearings)

CNC Milling on a Chiron machine is lightning fast thanks to a basket changer and a pick-up chain tool magazine. Its huge advantage is the individual assembly for a specific task. The Chiron milling center has high precision, usability and performance in machining. You will certainly be pleased that thanks to its qualities and speed, workpiece cost is lower when it is used.

Mazak Nexus 4000-II and Mazak FH-4800

The horizontal center with the possibility of a full fourth axis (HCN-4000-II) is characterized by typical Mazak quality, flexibility and high performance. 1G acceleration, high rapid traverses and speeds, use of 2 loading pallets, where one pallet is machining, the other is in the preparation phase. Its segment is used in the field of hydraulics with a focus on cubes, control and connecting elements, valves and industrial valves, or in the field of mechanical engineering and automotive, where it applies its skills in milling and working on gearboxes, engine components, cabinets and various types of storages.

OKUMA MA 500-HB

The horizontal center with the possibility of a full fourth axis is characterized by high quality of machined surfaces, flexibility of setting and performance. High rapid traverses and speeds, use of 2 loading pallets, where one pallet machines, the other is in the preparation phase. We use the Okuma MA 500-HB horizontal center in the field of mechanical engineering, production for automotive, where, thanks to its high-quality processing, we perform milling of all engine parts, engine components, cabinets and other manufactured castings produced by our foundry.

Technical parameters