Structure of gantry machining center

Structure of gantry machining center

1 worktable

The worktable of gantry machining center is basically rectangular. Large castings such as worktable, bed, column, crossbeam and RAM are made of mihanna cast iron. The inner cavity of the castings is honeycomb composite arrangement structure. The design is advanced. All of them are treated by aging and secondary tempering to eliminate residual internal stress, stabilize the material, ensure the stability of workpiece processing accuracy and machine life.

2 Longmen

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

3 RAM

The structure of RAM can be divided into open type and closed type. The ram with open structure is clamped on the spindle box by pressing plate, and the cross-sectional area of ram is large; the ram with closed structure is clamped in the spindle box, and the cross-sectional area of ram is small.

4 tool magazine

There are three basic types of tool magazine: turret type, drum type and chain length type.

Attachment 5

The processing of large and complex parts usually needs a lot of accessories. 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.

6 CNC system

The CNC system generally adopts SINUMERIK 840C and 840D of Siemens company of Germany or 31I series of FANUC company of Japan, and the CNC axis adopts full closed-loop control.

7 accuracy

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

ken.tang @ chengcg.com

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