Main functions and mechanism characteristics of machine tools

The C5225 double column vertical lathe is mainly suitable for cutting and processing black metals, non-ferrous metals, and some non-metallic parts with high-speed steel, hard alloy, and ceramic cutting tools, including inner and outer cylindrical surfaces, inner and outer conical surfaces, grooves, and flat surfaces. It can meet the production requirements of different users, with high efficiency, stable and reliable accuracy.

Introduction to the structure of each part of this machine tool:

(1) This machine tool is a double column gantry structure. The workbench base and gantry frame are fixed on the foundation after being closed. The crossbeam moves on the column guide rail and is automatically hydraulically clamped. The crossbeam is equipped with left and right vertical knife holders. The tool holder slide is installed on the large drag plate of the crossbeam to achieve horizontal feed and rapid movement; The square slider achieves vertical feed and rapid movement on the tool holder slide.

The main components of the machine tool, including the left and right columns, base, worktable, crossbeam, tool holder slide, and main transmission gearbox, are all made of high-strength cast iron using resin sand casting technology. Eliminate residual stress through heat treatment process. The structure of each component is reasonable, and sufficient reinforcement plates are arranged. The whole machine has sufficient strength, rigidity, and high stability.

(2) The main motor drives the worktable to rotate through a 16 stage gearbox. The variable speed cylinder and shift fork are controlled by an electromagnetic valve, which drives the sliding gear to achieve variable speed, allowing the worktable to achieve a speed of 2-63r/min.

(3) The left and right blade slide seats are respectively installed on two large drag plates that can move on the crossbeam, and two square slide pillows with a cross-sectional size of 255 × 200 are respectively installed on the blade slide seats. The material of the slide pillow is HT250, which is finely processed after complete heat treatment. High strength and stiffness, capable of withstanding a heavy shear load of 35KN. m. The sliding surfaces of the slide and crossbeam, as well as the slide and pillow, are embedded with wear-resistant carbon fluorine guide plates. Ensuring a high contact stiffness between moving parts, stable feed, and favorable accuracy retention. The left and right slide pillows of the knife holder are both equipped with balance oil cylinders to overcome the influence of gravity and ensure consistent up and down movement force of the slide pillows. The horizontal and vertical feed movements of the left and right knife holders are driven by 18 level mechanical feed boxes at both ends of the crossbeam through light bars; The horizontal and vertical rapid movement of the tool holder is driven by a fast motor located on the feed box through a light bar.

(4) The workbench adopts a long spindle structure and uses high-precision double row cylindrical roller bearings for radial centering. Its inner ring has a 1:12 taper, which can adjust the radial clearance to ensure the rotation accuracy of the worktable. The axial direction adopts dynamic pressure guide rails, which provide the worktable with high contact stiffness under heavy loads.

(5) The crossbeam moves vertically up and down on the column guide rail. It is driven by a dual axis AC motor to drive the left and right worm gear reducers and screw rods. The lifting movement of the crossbeam and the clamping of the crossbeam on the column are interlocked. There are four clamping points between the crossbeam and the column, symmetrically and evenly distributed. Clamping is achieved by clamping with a disc spring assembly and hydraulic relaxation. The release action of the crossbeam is controlled by the control button, and the clamping of the crossbeam is automatically reset by the disc spring group. Easy to operate and highly automated. To ensure consistent upward and downward movement force of the crossbeam, a balancing device is installed on the crossbeam. At the same time, an integral unloading beam is installed on the crossbeam guide rail, and the tool holder drag plate is also equipped with a mechanical unloading device in the vertical direction, so that 70% of the weight of the tool holder acts on the unloading beam, ensuring the durability of the crossbeam guide rail accuracy.

(6) The machine cover, connecting beam, left and right columns, and worktable base form a closed gantry frame structure, and the entire gantry frame is fixedly installed on the foundation. So machine tools have high strength, stiffness, and stability.

(7) This machine tool is equipped with a separate hydraulic system. Its function is to provide variable speed power to the hydraulic cylinder of the main transmission gearbox; ② Supply oil to the dynamic pressure device of the workbench guide rail pair; 3. Supply oil to the balance cylinder of the slider; 4. Supply oil to the clamping cylinder of the crossbeam; 5 provides lubrication oil for machine tools. Due to the high workload of the hydraulic system, the main control components used in the system are all products from domestic and foreign manufacturers, ensuring the stability and reliability of the system.

(8) The parts of this machine tool that frequently move, such as the crossbeam, carriage, tool holder slide, slider, and screw, are automatically lubricated by a centralized lubrication device with fixed and quantitative oil supply. Ensure that the machine tool can be used under reasonable conditions.

(9) In addition to dust prevention devices, the moving parts of the machine tool also have safety interlocks and interlocks between them. Prevent mutual interference and collision. The electrical design of the machine tool complies with international universal design standards, can meet the relevant process requirements of users, and has necessary interlocks, interlocks, and protective devices.