Description
YL-557D 850E Educational CNC Milling Machine adopts a vertical frame layout, the column is fixed on the bed, the headstock moves up and down along the column (Z direction), the sliding seat moves longitudinally along the bed (Y direction), and the worktable slides along. The structure of the seat moving laterally (X-direction). The bed, worktable, sliding seat, column, headstock and other large parts are made of high-strength cast iron materials, and the shape is resin sand technology, and the stress is eliminated by two aging treatments. These large parts are optimized by Pro/E and Ansys to improve the rigidity and stability of the large parts and the whole machine, and effectively suppress the deformation and vibration of the machine tool caused by the cutting force. The X, Y, and Z axis guide rail pairs adopt rolling linear guides, which have low dynamic and static friction, high sensitivity, low high-speed vibration, low-speed no creep, high positioning accuracy, excellent servo drive performance, and improve the accuracy and precision stability of the machine tool. The X, Y, and Z axis servo motors are directly connected with high-precision ball screws through flexible couplings, reducing intermediate links, realizing backlash-free transmission, flexible feeding, accurate positioning, and high transmission accuracy. The Z-axis servo motor has an automatic brake function. In the event of a power failure, the automatic brake can hold the motor shaft tightly to prevent it from rotating, which plays a role of safety protection. The spindle group is produced by a professional Taiwanese manufacturer, with high precision and high rigidity. The bearing adopts P4 grade spindle special bearing. After the whole spindle is assembled under constant temperature conditions, it passes the dynamic balance correction and running-in test, which improves the service life and reliability of the whole spindle.
