Travel (X/mm) 1800 Travel (Y/mm) 2150 Travel (Z/mm) 1250 Tool magazine yes Number of tool magazine inserts 228 Accessories • 1 spare electrospindle, overhauled and never used; •200 hsk100 tools Year of construction 2015 CE marked Model emco u mill 1800 Universal milling machine with 5 axes and 600 Nm torque (S1)

How it works and how to use a 5-axis milling machine

A 5-axis milling machine, such as the Mecof Emco UMill 1800 , works by moving the cutting tool along five axes of motion (X, Y, Z, and two rotations A and B). This allows the tool to machine the workpiece from different angles without having to manually reposition it, improving the efficiency and precision of the process.

Phases of use:

1. Mounting the workpiece: The workpiece is fixed on the work surface.
2. Programming: The CNC (Computer Numerical Control) program that guides the movements of the milling machine is loaded. The program is developed using CAD/CAM software.
3. Machining: The milling machine carries out machining according to the program, moving the tool along the five axes to create the desired shape.
4. Quality Control: Once machining is complete, the part is removed and checked for accuracy and compliance with specifications.

Types of Existing Milling Machines

Milling machines can be classified based on the number of axes and specific applications:

1. 3-axis milling machine: Movements along the X, Y and Z axes. Used for simple machining on planes.
2. 4-axis milling machine: Adds a rotary axis, allowing four-sided machining without repositioning the part.
3. 5-axis milling machine: Allows extremely complex machining, thanks to movements along 5 simultaneous axes (X, Y, Z, and two rotary axes).

Workable Materials

The Mecof Emco UMill 1800 can process a wide range of materials, including:

• Steel
• Aluminum
• Titanium
• Cast iron
• Composite materials (e.g. carbon fibre)
• Industrial plastic

The 5-axis milling machine is particularly suitable for processing materials that are difficult to machine with traditional machines, such as special alloys used in the aerospace industry.

Reciprocating Machinery

Although versatile, the 5-axis milling machine is not always the only option for complex machining. Here are some alternative machines:

• 3 or 4 axis CNC machines: Suitable for less complex machining or with lower precision requirements.
• 5-axis lathe: Ideal for producing complex cylindrical parts with curved surfaces.
• Industrial 3D printers: For the additive manufacturing of complex components, especially in prototyping.
• Electric discharge machining (EDM) machines: Used to machine hard or difficult-to-mill materials with extreme precision.

Calculations to Optimize Operation

Optimizing the operation of a 5-axis milling machine such as the Mecof Emco UMill 1800 requires attention to several parameters:

• Cutting speed (V): It is determined based on the material and the tool, calculated with the formula V=π⋅D⋅n1000V = \frac{π \cdot D \cdot n}{1000} $V$ $=$ 1000 π ⋅ D ⋅ n ​, D is the tool diameter and n is the spindle speed in RPM.
• Feed per tooth (fz): Determines the tool feed per spindle revolution, calculated as f=fz⋅Z⋅nf = fz \cdot Z \cdot n $f$ $=$ $f$ $z$ $\cdot$ $Z$ $\cdot$ $n$ , where Z is the number of tool teeth.
• Depth of Cut (ap): Amount of material removed per pass, directly influencing the power needed.
• Machining strategy: Using machining strategies such as spiral or helical milling can improve tool load distribution and reduce machining time.

Why it is better to buy a used milling machine (Mecof Emco UMill 1800)

Buying a used 5-axis milling machine like the Mecof Emco UMill 1800 can offer several advantages:

1. Lower cost: Buying a used machine allows you to save compared to the cost of a new one, reducing the initial investment.
2. Already run-in machinery: A used machine has passed the initial run-in phase and can be put into production immediately.
3. Reliability: The Mecof Emco UMill 1800 is known for its robustness and precision. If well maintained, it can still provide years of reliable service.
4. Parts and service available: Parts and service for this model are easily available, thanks to the reputation of the Emco brand.
5. Ready availability: Used machines are immediately available, without waiting times for the production and delivery of a new machine.

In conclusion, a 5-axis milling machine like the Mecof Emco UMill 1800 is an excellent choice for those who need complex machining on different materials. Buying a used model can be a smart investment, especially for companies looking to balance costs and quality without compromising production capabilities.