COVEMA 4 VS fast head milling machine displayed on 3 axes. This cutter is a versatile and high-performance machine tool, mainly used for milling operations on different types of materials, 

The COVEMA 4 VS fast head milling machine is a machine tool designed to perform high-speed milling operations. It is particularly appreciated for its ability to work precisely and quickly on various materials. Here is a detailed overview of how it works, how to use it, the types of existing milling machines, the materials that can be processed, the alternatives available, the calculations to optimize their operation, and the reasons why it may be convenient to buy a used model.

How it Works and How to Use a Fast Head Milling Machine

The milling machine uses a rotating head (called a "fast head" in the case of the COVEMA 4 VS) to remove material from a piece through the action of a cutting tool called a "bur". The "fast head" indicates that this machine is capable of reaching very high rotation speeds, allowing rapid and precise processing.

Phases of use:

1. Machine preparation: Mount the appropriate cutting tool (milling cutter) in the fast head spindle.
2. Workpiece Fixture: The workpiece is clamped to the work surface, often using clamps or a mechanical clamping system.
3. Parameter setting: The head rotation speed and the tool feed are set according to the material to be machined and the type of operation to be performed.
4. Machining: The fast head rotates the tool while the piece is moved according to the established directions to create the desired shape or profile.
5. Checking and finishing: After the main processing, finishing can be carried out to improve the surface quality or add details.

Types of Existing Milling Machines

Milling machines are classified mainly based on their configuration and operational capabilities:

1. Vertical milling machines: The tool is mounted vertically, ideal for working on horizontal planes.
2. Horizontal milling machines: The tool is mounted horizontally, suitable for lateral machining and for workpieces requiring deep cuts.
3. Universal milling machines: Combines the capabilities of vertical and horizontal milling machines, offering operational flexibility.
4. Fast Head Milling Machines: Designed for high-speed machining, reducing machining times and improving accuracy.
5. CNC milling machines: Completely controlled by computer, they allow very complex machining with very high precision.

Workable Materials

The COVEMA 4 VS is capable of processing a wide range of materials thanks to its ability to operate at high speeds, including:

• Soft and alloy steels
• Aluminum and its alloys
• Copper and brass
• Plastic materials
• Composites
• Wood (if used with specific tools)

The choice of cutting tool and rotation speed are crucial to obtain quality work on different materials.

Reciprocating Machinery

Depending on your specific needs, there are several machine tools that can be used as alternatives to the fast head milling machine:

• CNC milling machine: Ideal for complex processes that require high precision and repeatability, with the possibility of automating the process.
• CNC machining center: A multifunction machine that combines milling, drilling and other processing in a single setup.
• Lathe with rotating tool: Used for machining cylindrical pieces, it can perform operations similar to milling.
• Pantograph: Used for engravings and cuts on flat and curved surfaces, mainly on wood and plastic materials.
• Grinding machine: Used for machining very precise and smooth surfaces, particularly on hard materials.

Calculations to Optimize Operation

To optimize the performance of the COVEMA 4 VS milling machine, it is important to perform correct calculations to determine the operating parameters:

• Cutting speed (Vc): Depends on the type of material and the tool used. It is calculated with the formula Vc=π⋅D⋅n1000Vc = \frac{π \cdot D \cdot n}{1000} $V$ $c$ $=$ 1000 π ⋅ D ⋅ n ​, D is the tool diameter and n is the spindle rotation speed in revolutions per minute (RPM).
• Feed per tooth (fz): This is the distance the tool feeds for each tooth in one complete revolution. It depends on the material and tool used.
• Cutting depth: It must be calibrated according to the material and the available power of the machine to avoid excessive load and wear of the tool.

Why It Is Worth Buying a Used COVEMA 4 VS Milling Machine

Buying a COVEMA 4 VS can be advantageous for several reasons:

1. Economic Savings: A used model offers a lower purchase cost than a new one, allowing for a smaller investment.
2. Build Quality: COVEMA routers are known for their strength and durability, meaning a used model can still provide years of reliable service.
3. Availability: Used machines are often immediately available, eliminating waiting times for the delivery of a new model.
4. Value Retention: High quality machine tools tend to maintain their value over time, which makes a used model a good investment also with a view to possible future resale.
5. Adaptation to Needs: A used model can already be configured for specific applications, reducing the need for expensive customizations.

Conclusion

COVEMA 4 VS fast head milling machine is an excellent choice for those who need a versatile machine tool, capable of operating at high speeds with precision on different materials. Buying a used model represents an opportunity to obtain a high quality machine at a lower cost, while maintaining high performance and reliability. Its ability to optimize machining times without sacrificing quality makes this milling machine a valuable addition to any workshop or factory.