Three-axis machining center

The role and advantages of the three-axis machining center:

The most effective machining surface of the vertical machining center (three-axis) is only the top surface of the workpiece, and the horizontal machining center can only complete the four-side machining of the workpiece with the help of the rotary table. At present, high-end machining centers are developing in the direction of five-axis control, and the workpiece can be processed in one clamping. If equipped with a high-end CNC system with five-axis linkage, it can also perform high-precision machining on complex spatial surfaces.

Four-axis simultaneous machining

The so-called four-axis linkage machining generally adds a rotating axis, usually called the fourth axis. The general machine tool has only three axes, that is, the workpiece platform can move left and right (1 axis), front and rear (2 axis), and the spindle head (3 axis) is used for cutting workpieces. Rotating electric indexing head! In this way, bevel holes can be automatically indexed, and beveled edges can be milled, etc., without the loss of accuracy by secondary clamping.

Four-axis linkage machining features:

• Due to the participation of the rotating axis, it is possible to process defect-free surfaces, which greatly improves the machining accuracy, quality and efficiency of free-space surfaces;

• Three-axis machining machine tools cannot process or need to clamp workpieces that are too long (such as long-axis surface machining), which can be completed by a four-axis turntable, which shortens the clamping time and reduces the processing steps. Positioning stops multi-step processing to reduce positioning errors;

• The tool performance is greatly improved, the tool life is prolonged, and the production concentration is improved.

The establishment of four-axis coordinates:

Determination of Z axis: The axis direction of the machine tool spindle or the vertical direction of the worktable for clamping the workpiece is the Z axis.

Determination of X-axis: the horizontal plane parallel to the workpiece mounting surface or the direction perpendicular to the rotation axis of the workpiece in the horizontal plane is the X-axis, and the direction away from the spindle axis is the positive direction.

Five-axis machining center

Five-axis machining centers are divided into vertical five-axis machining centers and horizontal five-axis machining centers according to different structures. What is the difference between them?

The difference between vertical machining center and horizontal machining center:

• Different structure: the main axis (feed axis) of the horizontal machining center is parallel to the ground, while the main axis (feed axis) of the vertical machining center is perpendicular to the ground.

• Different worktables: The worktable of the vertical machining center is usually a T-slot worktable with a cross slide structure. There are two sets of motion mechanisms responsible for the movement in the perpendicular direction to each other. On the guide rail of the horizontal machining center, the worktable of the horizontal machining center is only designed to move in the X or Y direction.

Conclusion

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