CNC, Mixed, Universal and Conventional Milling Machines
Industrial Machinery Colombia.
What is a milling machine?
Milling machine is the name given to one of the most useful machine tools in the industry.
Surely you have heard this name more times than you can remember ... and the milling machine is present in all industrial and mechanical processes.
This machine tool is used for mechanized work on different materials. The milling machine operates by cutting chips in rotary movements.
The endmill is the cutting part, and has several cutting edges. This part can be moved in such a way that it can approach the part in different gradations.
With it, the most diverse materials can be machined, from plastic to very strong metals.
A part after being milled can be subjected to roughing to fine tune it properly and obtain many shapes on both flat and irregular surfaces.
Uses of the milling machine in industry
The milling machine responds to a large number of industrial uses.
To be more specific, the milling machine can have variations in terms of its power and dimension, but it is its accessories that allow it to cover a greater range of tasks.
The diversity of uses responds mainly to the possibility of adding multiple accessories and peripherals that allow it to meet increasingly demanding quality specifications.
The milling machine was invented in the 19th century. Since that time, it has become a basic machinery in practically any job, both industrial and small-scale.
The increase in accessories and the incorporation of very advanced technologies allow today's milling machines to be capable of many more tasks than in later years.
Consequently, a modern milling machine is a versatile tool that allows for an immense variety of machining.
In addition to this, it adds greater flexibility to the production processes in almost any mechanical project.
Currently, much broader parameters are used, thanks to technological development and the incorporation of numerical control in the conventional milling machine.
However, the difference between one milling machine and another is always defined according to the process for which it is used.
That is, they can be adapted through simple changes in their configuration to various mechanized processes within the industrial sector.
In this order of ideas, it is worth noting that the increasingly sophisticated and exact designs favor extending the areas of application of the milling machine.
Using a milling machine requires the participation of qualified personnel. Programmers, preparers and mills alike must have a specific set of technical knowledge to safely use this versatile and utilitarian machine tool.
CNC Milling Machines: Computer Controlled
By including numerical control technology, milling machines are automated on a scheduled basis, just like today's CNC lathes and other machine tools.
The use of computer programs in the milling process increases production. And its flexible design allows different configurations to be adapted to the final products.
The main application of CNC milling machines can be located in the production of complex parts in low volumes, and that of simpler parts in medium volume.
In this type of milling machine, the design can be changed relatively easily from one part to another. For this, it is necessary to use a different program that will indicate the parameters required for the new design and in some cases the change of the tool or cutter.
These programs greatly facilitate obtaining machined parts with great precision.
The numerical control system programs are based on numbers, letters and symbols.
They are designed specifically and in programming language.
The symbols belong to the ISO standard language. While the instructions are created in Fagor, Siemens or Heidenhain language, for example.
The simulation is the basis for the development of the instructions, since it facilitates the computer to corroborate the efficiency of the operational sequence of the program.
That is, it compares the desired results and those obtained from each sequence of tasks through a simulation.
Each instruction program is useful for a specific task.
When machining is on a large scale and in series, this system usually includes additional instructions related to the system of clamping and placing or removing the parts.
These cases allow the robotization of the entire production system, considerably increasing productivity and reducing costs.
Types of Milling Machines Which one to choose?
In order to classify the milling machines, different aspects are attended to. This results in 3 different categories for classification.
Let's see what they are and the characteristics of each type:
Taking into account the orientation of your tool, milling machines are usually classified into horizontal, vertical and universal.
Horizontal milling machine:
In this type the cutter is cylinder-shaped and supported on a horizontal axis.
The axis is driven by the head of the milling machine and one of its ends. The counterpart of the shaft is supported on the bearing located in the ram.
The ram is a sliding bridge that allows grooves to be made in different shapes and depths.
Its operation is such that it can make several parallel grooves, by placing several burs. Detail that increases your productivity.
Vertical milling machine:
Contrary to the previous typology, a vertical milling machine has the spindle positioned vertically.
That is, according to its structure, the cutter is placed on the spindle. By rotating on its axis it allows deepening the cuts.
Vertical milling machines can be fixed bench or bench and turret.
While the former only allow a perpendicular movement of the table in relation to the spindle, which slides parallel to its axis; the latter have the advantage that the table slides horizontally and vertically during machining.
Universal milling machines:
This type has a main spindle that allows the tool shafts to mate. In this way, it fulfills the functions of a vertical milling machine.
Its sliding bridge can also perform back and forth movements using the guides.
The area of application of this mole is quite limited. Which is mainly due to its high cost and large size.
Today's universal milling machines
Many recent milling machines can offer an electronic display panel. Through this panel, you can see the positioning of the tools.
For this purpose, the coordinate system is used, which helps in reading the sliding dimensions.
Copy milling machines also incorporate a copying mechanism. Which is useful for different machining profiles.
Special milling machines:
This category groups the milling machines that, because they fulfill specific tasks, are not included as traditional milling machines.
In this typology, there are milling machines that due to their conformation and manufacturing method have well-defined characteristics and specific functionality.
They respond to each manufacturing process in such a way that they differ substantially from each other. Let's see in more detail:
Circular Milling Machines:
In this type of milling machine, the tool carriage moves on a circular table. The movement is rotary.
It is common that it has more than one head which fulfill different functions such as roughing and polishing for example.
It has the advantage that it allows the incorporation of new parts or tools during machining.
Copy Milling Machines:
These have two tables, main and auxiliary. In the first the part is machined and in the second the model to be copied is placed.
It has an artifact called a probe that fulfills the function of following the relief of the piece to be copied to define the movement of the cutter on the main table.
The vertical axis of the cutter is subject to a mechanism called a pantograph that regulates the tracking system already described.
There are copy mills that operate with hydraulic, electronic, or a combination of both.
Gantry or bridge milling machine:
Its structure consists of two columns that support the tool holder vertically.
You can perform vertical and transverse slides around the part, which moves longitudinally. They can have additional heads or horizontal extensions for the shafts.
They are generally used in the machining of large parts.
The variety of mobile bridge, the sliding is done by the tool and not by the surface or bench as in the model described before. They are useful for very bulky pieces.
Mini milling machine:
Usually used for handicraft work in wood, this artifact machines small pieces.
They are suitable for simple artistic works that do not require mass production. Therefore, its applications fall on DIY, cabinetmaking and moldings.
Where to buy a milling machine in Colombia?
Choosing a milling machine should be a matter in which reason and economics converge.
The FTM G5VS Taiwanese Turret Milling Machine, offers range of motion and digital display.
In addition, it includes accessories and allows 3-axis work. It has a safety switch, a halogen lamp and an integrated cooling system, among other technical characteristics.
In the line of Numerical Control machinery, the XK-3215 CNC milling machine, which offers use of useful time and reduction of operational failures.
If what you are looking for is a platform or mixed milling machine, you can also buy it at excellent prices at Aeromaquinados.