The moving column structure of machine tools is similar to that of vertical machining centers. The fundamental difference lies in the different processing forms.
The structure of the machine tool. The machine tool is also made into fixed column type and moving column type according to the size of the It looks like a pillow, so it is called a ram. There is a spindle head that can extend and retract inside the ram, which is called the W-axis. The shaft diameter is thin and the stroke is slightly smaller than the Z-axis stroke. This structure mainly solves the problem that many parts have deep holes or have many interferences that are difficult to process in machining.
Strictly speaking, moving column machining centers are also a type of vertical machining centers, and their structures are similar. The fundamental difference lies in the different processing forms. When an ordinary vertical machining center is processing, the workpiece is placed on the workbench, and the workpiece is processed in the XY axis direction by the forward and backward, left and right movements of the workbench. Its biggest advantage is that the workbench moves quickly, which is directly reflected in the improvement of processing efficiency.
Technical features of the moving column machining center:
1. The workbench is fixed, the workbench has a large load-bearing capacity, there is no suspension or deflection of the workbench, good rigidity and high precision, and the machine tool The load-bearing weight is about 4000Kg. The fixed workbench makes it easier for operators to get closer, making loading and unloading workpieces easier and more labor-saving.
2. The X, Y and Z three-axis fully moving column-type high-rigidity and high-strength structures; the three axes use heavy-duty linear guides, which are suitable for processing large and long workpieces. For special-shaped workpieces and Parts with misaligned centers of gravity can be processed with high precision smoothly.
3. The machine tool processing area and the moving area are separated. Each moving part is far away from the cutting surface. During processing, only the moving parts of the tool need to be moved while the quality remains unchanged. This avoids the influence of high inertia motion and ensures that the workpiece is processing accuracy and quality. The motor, lead screw, rolling guide rail and positioning switch are not easily affected by chips, cutting fluid, etc. and cause failure. The machine tool has the characteristics of less failure and easy maintenance.