CNC milling machine structure

CNC milling machine generally consists of the following parts:

(1) CNC system

The CNC system is the core of the automatic machining of the machine tool and the soul of the entire CNC machine tool. It is mainly composed of input devices, monitors, computer numerical control systems, programmable controllers, various input/output interfaces, etc.

(2) Feed servo system

CNC milling machines generally have motion control in multiple feed directions, such as front and rear, left and right, and up and down directions. A set of servo drive system is provided for the mechanical execution components of feeding movement in all directions.

(3) Spindle servo system

The movement of the machine tool spindle is a rotary movement, and with the change of cutting conditions, the spindle speed is required to change accordingly. Modern CNC machine tools require the spindle to have a high speed and a wide range of speed regulation. The spindle can rotate and automatically accelerate and decelerate in both positive and negative directions, and can command any speed between the highest speed and the lowest speed, which belongs to stepless speed regulation. Way.

(4) Auxiliary device

Auxiliary devices mainly include hydraulic control system, lubricating device, cutting fluid device, chip removal device, workpiece clamping and loosening mechanism, rotary table, overload and protection device, etc.

(5) The main body of the machine tool

The main body of the milling machine is the mechanical part of the CNC milling machine, including the bed, the headstock, the milling head, the worktable, and the feeding mechanism. Compared with the traditional ordinary milling machine, its overall layout, appearance, transmission mechanism, tool system and other aspects have undergone great changes. For example, the main drive and spindle components have the advantages of high transmission power, high rigidity, good vibration resistance and small thermal deformation; the feed transmission parts have the characteristics of short transmission chain, simple structure and high transmission accuracy; the machine tool itself has high dynamic , Static stiffness; using a fully enclosed cover.