What is Gantry Machining Center?

Gantry machining center refers to the machining center whose axis of the main shaft Z is perpendicular to the workbench. The overall structure is a large machining center machine with a portal structure frame composed of double columns and top beams, and there is a beam in the middle of the double columns. It is especially suitable for processing large workpieces and workpieces with complex shapes.

There are fixed beam types (beam fixed, worktable moving/rotating), moving beam types (beam moving up and down, worktable moving back and forth), moving column types (worktable fixed, gantry moving), crown block types (worktable fixed, beam moving) and multiple types of gantry processing centers in the above composite forms. The processing characteristics, capabilities, and processing purposes of the products are not the same.

Structural features

Workbench

The worktable of the gantry machining center is rectangular. Large castings such as worktable, bed, column, beam, and RAM are made of cast iron or welded parts. The inner cavity of the castings is a honeycomb composite arrangement structure, with advanced design. They are all treated with aging and secondary tempering to eliminate residual internal stress and stabilize the material, to ensure the stability of workpiece processing accuracy and the service life of the machine tool.

Gantry

The gantry is composed of a beam and two columns. It can be divided into three types: beam fixing, beam locking and sectional lifting by positioning block, and beam arbitrary lifting.

Ram

The ram can be divided into open type and closed type in structure. The ram with an open structure is clamped on the headstock through the pressing plate, and the sectional area of the ram is large; The ram with a closed structure is clamped in the spindle box, and the sectional area of the ram is small.

Tool magazine

The basic types of tool magazines include turret type, wheel drum type, and chain length type.

Attachment header Library

The machining of large and complex parts usually requires many attachment heads. The accessory head is specially designed according to the processing requirements of the workpiece, which is generally divided into right angle head, extended head, special angle head, and universal head.

Numerical control system

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

Accuracy

The accuracy of the machine tool refers to the original accuracy of the machine tool without external load. Accuracy is usually expressed by the deviation between its opposite side and the ideal state (error for short). The smaller the error, the higher the accuracy.

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