It might reduce the number of setups needed to machine a part, significantly improving total cycle time. Indexing is a simpler process than continuous operation and is excellent for gaining improved access to the parts being manipulated. Indexing is often called 3+1 because all 4-axes are not moving simultaneously. When the fourth axis is used for indexing, the axis is locked while the cutting tool executes moves in 2- or 3-axes (X, Y, Z). Capable CAM software is necessary when automating this continuous machining process, as it is more complicated. This process is often referred to as continuous cutting. 4-axis is critical for cutting features along an arc when manually machining, which is otherwise difficult to do. Various tools can be attached to the fourth axis to expand output capabilities.Ī fourth axis aids manipulation and accuracy of your milling tool. In any configuration, the fourth axis is the rotary axis, meaning it rotates around one of the other axes, adding much more flexibility and control when manipulating the workpiece. In milling machines with a rotary, it is commonly the “A” axis, and it rotates around X. For mill-turns it is commonly the “C” axis, and it rotates around Z. The 4-axis will depend on the machine configuration. The typical 3-axis setup includes the X, Y, and Z axes. This combination facilitates greater manipulation of the workpiece, like rotation, allowing for more intricate milling patterns. Mill-turning combines the revolution of the workpiece with the tools of milling.

While milling employs multipoint tools and a fixed workpiece, turning typically uses single-point tools.

During this machining process, the material is removed from the workpiece, creating a revolved profile. Turning involves any process where the workpiece (the piece of secured, pre-shaped material) rotates in a chuck while the cutting tool moves across it. Let’s explore the merits of 4-axis further, looking especially at its role in mill-turning. This additional axis enables machining wrapped features, turning, and contouring in a variety of applications, and is compatible with a variety of CNC machinery arrangements, boosting its versatility. While 3-axis milling is widely used across the industry, operators have incorporated a fourth axis for complex design production.

Industrial products have grown more complex over time, and manufacturing processes have evolved alongside them. CNC milling is undoubtedly a detailed process, employing specialized machinery and processes to carry out any design.

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