Gantry milling machine includes a bed, set up in the bed of the table and CNC circuit control system. The gantry also includes a gantry carriage and a gantry carriage moving on the X-axis guide. Z-axis guide, mounted on the gantry. And the beam is provided with a Z-axis carriage, and the beam is movably clamped on the Z-axis guide through the Z-axis carriage, and the Y-axis guide is also mounted on the beam.

Milling device, gantry milling machine milling device activities installed in the Y-axis rails, so that the gantry in the control of CNC control system for X, Y, Z three-axis three-dimensional space milling. The CNC gantry milling machine with high precision milling, drilling, boring, cutting and other operations.

Gantry milling machine is the United States Whitney in 1818 created by the horizontal milling machine; in order to milling the twist drill bit spiral groove, the American Brown in 1862 created the first universal milling machine, which is the prototype of the milling machine; There are a gantry milling machine; the twentieth century, 20 appeared semi-automatic milling machine, the table using the block to complete the "feed - speed" or "speed - feed" automatic conversion.

Milling machine with door frame and horizontal long bed. Gantry milling machine machining accuracy and productivity are high, suitable for batch and mass production in the processing of large parts of the plane and slope. CNC gantry milling machine can also be processed space surface and some special parts. The gantry milling machine consists of columns and roof beams. The beams can be lifted and moved along the two column guides. There are 1 to 2 beams on the beam with a vertical spindle, which can be moved laterally along the beam guide. Two pillars can also be installed with a horizontal spindle of the milling head, it can be along the column for lifting movements. These milling heads can process several surfaces at the same time. Each milling head has a separate motor, variable speed mechanism, steering mechanism and spindle components. Processing, the workpiece is installed on the table and with the vertical feed movement. Large gantry milling machine total weight of 850 tons. Gantry milling machines also have some variants to accommodate different processing objects. ① gantry milling and boring machine: the beam is equipped with milling and boring milling boring head, the spindle can be used for axial motor feed and fine-tuning device, fine-tuning speed can be as low as 5 mm / min. ② bridge gantry milling machine: processing table and the workpiece does not move, and moved by the gantry. It is characterized by small footprint, carrying capacity, gantry travel up to 20 meters, easy to process special or special weight of the workpiece shape and gantry planer is similar to the difference between its beams and columns are not mounted knife knife but the belt There is a cutter head of the spindle box, and the reciprocating motion of the longitudinal table of the gantry milling machine is not the main movement but the feed movement, and the rotational movement of the milling cutter is the main movement.