Buy used milling machines online
What are milling machines?
The milling machines belong to the field of manufacturing technology. The upper category can also be referred to as a “separating process”, in this case as a cutting process using machine tools. As a rule, the multi-edged, rotating milling tools remove material by cutting. As a result, the workpiece is carved out of the raw material, by this brought into the desired shape.
The chip removal on the workpiece is determined by the rotation of the milling tools and the movement of the tools in the horizontal and vertical direction. During the milling process, depending on the type of tool, we speak of circumferential milling, face milling or a combination of face and circumferential milling. The end result can be flat or shaped surfaces. The surface shapes can be created by multiple movements of a tool, by the sequence of several tools or by the direct use of shaping tools. The best-known type of form milling cutter is likely to be the finger mill. A groove or a countersink can thus be produced in one operation.
Simply structured milling machines consist of a machine table that can be moved in 2 axes, horizontally and vertically, which can be moved either manually or by motor. There are no upper limits to automation. Thanks to the automated control of the axes and with an increasing number of axes, the milling machine continues to develop step by step. This development goes from the simple 3-axis machine to the CNC controlled machine and with an increasing number of axes to the machining center.
Machining centers can be designed in connection with the milling function as follows:
- Turn-Mill centres • Drill-Mill centres • Pure Milling centres
Special forms of the milling function in machining centers also exist. There are the following examples:
- Gantry processing centres • Machining centres 5 axis
The number of axes on milling machines can also vary. Basically, however, simple machines can be distinguished by the arrangement of the axes. Here we are talking about milling machines with a horizontal or vertical axis. Based on this rough classification, we at tramao decided on the following categorization:
- Bed type milling machine • CNC Milling machines • Moving column milling machines • Engraving machines • Horizontal milling machines • Conventional milling machines • Profil milling machines • Portal milling machines • Other milling machines • Front side milling machine • Table milling machine • Universal milling machines • Vertikal milling machines • Hobbing machines
Milling machines in metalworking
All machining centers, including those that contain milling machine functions, are grouped together on tramao.de in the separate "Machining Centers" category.
A milling machine can also belong to several categories. For example, a portal milling machine can also be CNC-controlled. The milling function is also used across the board in gear production (see category gear cutting machines - hobbing machines). That is why it is possible on tramao.de to assign more than just one category to a machine. However, a maximum of only three categories per milling machine are possible. There are many classic areas of application for milling machines. It starts in small workshops with conventional machines and ends with highly complex workpieces in interlinked production systems, where maximum precision is also required from the milling machine.
There is no typical industry in which milling machines are used. The automotive industry needs these machines just like the plastics industry or the wood industry. The technology also knows hardly any limits. From rough steel construction to motorsport, space travel and renewable energies, milling machines are needed everywhere.
A large number of materials can of course also be processed by milling machines. Examples are metal, wood, plastic or composite materials.
How can a company choose the right milling machine from the multitude of options? This is not always easy and depends on a large number of parameters. The complexity and the number of pieces of the workpiece to be produced play an important role here. The risk and financial investment can be minimized by purchasing a used milling machine. The robustness of the older used milling machines is also often valued. Another reason for purchase can be that it is easy to repair.
tramao offers you a large selection of used milling machines and machining centers. You will also find the right service companies for repairs and spare parts procurement on tramao.de.
On tramao you will also find a wide range of machine accessories for milling machines such as spindles, tool holders, machine feet, clamping devices, coolant and lubricant systems, chip conveyors and much more.
Not to be forgotten is our range of tools.
If you decide to buy a used CNC milling machine, you will find a large selection of well-known manufacturers such as Mazak, DMG, Kraft, Knuth, Kolb or Waldrich on tramao.