The gantry machining center refers to a machining center set perpendicular to the spindle axis and the workbench, mainly suitable for processing large parts.
Classification of gantry machining centers:
There are various types of gantry machining centers, including fixed beam type (fixed crossbeam, rotating workbench), moving beam type (moving crossbeam up and down, moving workbench forward and backward), moving column type (fixed workbench, moving gantry), and overhead crane type (fixed workbench, moving crossbeam). The characteristics, capabilities, and specific product processing purposes of processing are also not entirely the same.
The structural characteristics of the gantry machining center:
1 Workbench
The workbench of the gantry machining center is basically rectangular. The large castings such as workbench, bed, column, crossbeam, and slide pillow are made of miHanna cast iron. The inner cavity of the castings is a honeycomb composite arrangement structure, with advanced design. All have undergone aging and secondary tempering treatment to eliminate residual internal stress and ensure material stability, ensuring stable machining accuracy of the workpiece and machine life.
2 Longmen
The gantry is composed of a crossbeam and two pillars. It is divided into three types: fixed crossbeam, segmented lifting of crossbeam locked by positioning blocks, and arbitrary lifting of crossbeam.
3 sliders
Sliding pillows can be divided into two types structurally: open and closed. The sliding pillow with an open structure is clamped onto the spindle box by a pressure plate, and the cross-sectional area of the sliding pillow is large; The closed structure of the slider is clamped in the spindle box, and the cross-sectional area of the slider is small.
4-blade magazine
There are three basic types of tool libraries: turret type, disc type, and chain type.
5 Attachment Head Library
The processing of large and complex parts usually requires many accessory heads. The attachment head is specially designed according to the processing requirements of the workpiece, generally divided into right angle head, extended head, special angle head, and universal head, etc.
6 Precision
The accuracy of a machine tool refers to its original accuracy without being subjected to external loads. Accuracy is usually represented by its opposite - the deviation from the ideal state (referred to as error), and the smaller the error, the higher the accuracy.
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