What is the Longmen machining center

A gantry machining center refers to a machining center that is set perpendicular to the Z-axis of the spindle and the worktable. The overall structure is a large machining center machine with a gantry structure frame composed of double columns and top beams, with a crossbeam in the middle of the double columns. Especially suitable for processing large workpieces and workpieces with complex shapes< Br/>


There are various types of gantry machining centers, including fixed beam type (fixed crossbeam, moving/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.
Structural characteristics
1 Workbench


The workbench of the gantry machining center is basically rectangular. Large castings such as workbenches, beds, columns, crossbeams, and sliders are made of cast iron or welded parts. The inner cavity of the castings is a honeycomb composite arrangement structure with advanced design, and all have undergone aging and secondary tempering treatment to eliminate residual internal stress and stabilize the material, ensuring stable machining accuracy of the workpiece and the service life of the machine tool.
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, drum type, and chain length 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 CNC system


There are many CNC system suppliers, and there are different choices of system brands and models according to different needs.
7 Precision


The accuracy of a machine tool refers to its original accuracy without being subjected to external loads. Accuracy is usually measured on its opposite side; The deviation from the ideal state (referred to as error) is used to indicate that the smaller the error, the higher the accuracy< Br/>


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