1.General layout of machine

The DMC800U five-axis machining center adopts a five-axis bridge-type vertical frame layout (as shown in the figure below). The high-rigidity bed and the column form a U-shaped frame structure. The beam moves forward and backward along the column (Y axis), and the slide moves laterally along the beam ( X axis), the ram moves up and down along the slide (Z axis), the turntable tilts and rotates along the X axis -120°～+120° (A axis), and the turntable surface rotates 360° along the Z axis (C axis). The bed, column, beam, slide, ram and other large parts are all made of high-strength Meehanna castings. These large parts are designed with the aid of 3D computer software, with reasonable arrangement of ribs and perfect heat treatment process to eliminate residual stress. Ensure that the whole machine has sufficient strength, rigidity and high stability.

2.Drive system

The Y-axis guide pair adopts the Japanese THK 55mm ultra-wide roller linear guide, and the X and Z-axis guide pairs adopt the Japanese THK 45mm ultra-wide roller linear guide. Long service life, interchangeability, excellent servo drive performance, improve the precision and precision stability of the machine tool. The X, Y, Z axis servo motors are directly connected with the Taiwan HIWIN high-precision ball screws through elastic couplings, reducing intermediate links and realizing gap-free transmission, flexible feeding, accurate positioning and high transmission precision. The Z-axis servo motor has an automatic brake function. In the case of power failure, the automatic brake can hold the motor shaft tightly so that it cannot rotate, which plays a role in safety protection.

A and C axis servo motors are directly driven, which reduces the transmission error, realizes high-precision transmission, accurate positioning and high transmission precision.

3.Spindle

The spindle adopts Guangzhou Haozhi 15000rpm electric spindle, which has high precision and high rigidity. The spindle bearing adopts NSK bearing (P4 grade). After the whole set of 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 set of spindle. Equipped with a high-precision oil cooler to cool the electric spindle unit, it can realize stepless speed regulation within its speed range. The spindle is controlled by the built-in encoder of the motor, which can realize the function of spindle orientation and rigid tapping.

4.Tool magazine

The Taiwan horizontal chain type 24 tool magazines are used, which are installed on the inner side of the two columns. When changing tools, the spindle moves to a fixed position for tool changing.

5.Coolant, Lubrication, Hydraulic System

5.1 Equipped with cutting fluid filtration, cooling and supply system

Equipped with large-flow cooling pump and large-capacity water tank to fully ensure circulating cooling, cooling pump power: 840W, 66.7L/min large-flow cooling pump, fully provide cooling.

5.2 Equipped with automatic air blowing and cleaning function of spindle taper hole

Equipped with the automatic air blowing function of the spindle taper hole.

At the moment when the tool is released, the air blowing air path is opened, and the air reaches the taper hole through the center of the spindle. The air blowing is always maintained during the tool changing process until the tool changing is completed and the air blowing is interrupted. This function is specially used for blowing off the possible foreign particles on the spindle taper hole and the surface of the tool holder during the tool change process, preventing the intrusion of foreign objects, and keeping the surface clean.

（3）Equipped with spindle constant temperature cooling

Equipped with an oil cooler, the bearings in the spindle are cooled by circulating cooling oil

A schematic diagram of the cooling connections is shown below:

（4）Machine servo axis automatic lubrication device

The lubrication of the machine tool guideway is directly supplied by the fixed and quantitative centralized lubrication pump to the moving parts to lubricate the three-coordinate guideway surface: the column-slide guideway surface, the slide seat-slider guideway surface, the slide -ram guideway surface and the lead screw nut. After the machine tool is powered on, the lubricating oil pumped by the lubricating pump motor is injected into the sliding block and ball screw nut of each guide rail through the oil pipe and joint. The timing lubricating device is equipped with an oil level switch. When the lubricating oil level in the oil tank is lower than the set height, the machine tool will alarm. Generally, the tank should be refueled every two weeks or so. Lubrication schematic：

6.Pneumatic system

The pneumatic two-piece can filter impurities and moisture in the air source, preventing impure gas from damaging and corroding machine tool components. The solenoid valve group is controlled by PLC program to ensure that the spindle loosening, spindle center blowing, spindle clamping and other actions can be completed quickly and accurately.

7.Other configuration

（1）   The drive system adopts all-digital AC servo motor；

（2）   Using linear guides；

（3）   The three axes use high-precision ball screws to ensure the required positioning

accuracy, and the grade is C3；

• Equipped with a fully enclosed cover for the processing area, conforming to CE

standards；

• Equipped with processing area lighting system；

（6）   With abrasion-resistant safety glass；

（7）   Equipped with automatic chip removal device and chip transport trolley for the transfer

of chips in the machining area；

（8）   Equipped with 1 handheld high pressure water gun；

（9）   Equipped with Renishaw laser tool setter；

（10）Equipment and electrical cabinets need to be adjusted with air conditioners