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The spindle axis is set perpendicular to the worktable, which is generally the case in a gantry machining center. It is mainly suitable for machining large parts.
Fixed beam type (fixed beam, rotating worktable)
Moving beam type (beam moves up and down, worktable moves back and forth)
Moving column type (fixed worktable, moving gantry)
Bridge type (fixed worktable, moving beam)
There are also various composite forms of these gantry type cnc machining centers. The machining characteristics, capabilities, and targeted products are different, and the machining purposes are not exactly the same.
Worktable
The worktable of a gantry machining center is basically rectangular, with large castings such as the worktable, bed, column, beam, and ram. The internal cavity of the casting features a honeycomb-like composite arrangement structure that undergoes aging and secondary tempering treatment, eliminating residual internal stress to stabilize the material and ensure the stability of machining accuracy and the longevity of the machine tool.
Gantry
The gantry consists of one beam and two columns and can be divided into three types: (fixed beam) (beam locked in segments by positioning blocks for lifting) (beam lifts at any position). This is a key part of the cnc machine structure in large gantry cnc machines.
Ram
The ram can structurally be divided into two kinds: open and closed types.
An open-structure ram is clamped on the spindle box via a pressure plate with a large cross-sectional area;
a closed-structure ram is clamped inside the spindle box with a small cross-sectional area.
Tool Magazine
Basic forms of tool magazines include:
turret type, drum type, and chain type.
Attachment Head Stock
The machining of large and complex parts typically requires many attachment heads.
Attachment heads are specially designed according to the machining requirements of the workpiece.
They are generally classified as right-angle heads, extended heads, special angle heads, and universal heads.
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