Brief introduction of CIMT2017 five-axis linkage machining center exhibits

At the CIMT2017 exhibition, the number of exhibitions of the five-axis linkage machining center was the highest in the past, and some of the exhibits were briefly introduced below.

1. Dalian Third Base Technology Co., Ltd. The machine body is made of high-strength cast iron with resin sand and has excellent vibration absorption performance. The layout of the machine tool is reasonable, and the finite element analysis method is used to optimize the cross-sectional shape and size of the part, so that the bed has high bending rigidity and torsional rigidity. With a T-shaped integral bed, the shock resistance is increased by 15% and the structural design is very compact. The machine tool is equipped with imported functional components such as B-axis milling head, C-axis continuous drive turret, and high-speed electric spindle, which can realize the whole process of workpiece clamping.

2. Dalian Third Base Technology Co., Ltd. The base of the machine adopts an integral frame structure, which has excellent vibration absorption performance. Reasonably select and arrange the ribs to improve the static stiffness and dynamic stiffness of the parts. At present, most of the machining centers adopt square ram or trapezoidal ram structure, which is easy to produce eccentric load and deformation. The layout of the round ram structure and the four linear guides overcomes these shortcomings, thereby maintaining the stability of the machining accuracy. The machine is equipped with a cradle type rotary table with A and C axes. The A and C axes are directly driven by a torque motor to ensure the dynamic response of the coordinate axes and drive without gaps.

3. Suzhou Shangjin Numerical Control Technology Co., Ltd. The five-axis of the machine adopts full-closed structure, and the whole machine features: (1) The bed structure optimized by the latest simulation analysis tool ensures the durability of the machine tool, and the large-sized casting structure can be processed continuously even under large load-bearing conditions. Ensure good shock absorption, high stability and high rigidity; (2) The spindle speed can be selected from 10000-42000r/min with strong cutting force; (3) The appearance of the machine tool is ergonomically designed for the operator to Front access to workbench and tool loading and unloading, replacement; (4) machine with 15 inch display to ensure better readability; (5) machine tool with good chip removal system; (6) spindle with two side spray Four ring sprays can also be equipped with the main shaft water outlet, which effectively solves the thermal drift of the tool and the spindle, and also cleans the iron scraps smoothly from the processing area.

4. Dalian Kede CNC Co., Ltd.
The machine adopts finite element analysis method to assist product development. It is designed for dynamic high stiffness requirements of heavy load heavy cutting. It adopts gravity center double drive, high torque, high rigidity and high precision B-axis direct drive technology to achieve high dynamic response. The machine tool adopts self-made torque motor, Guangyang CNC system, and also has a patent for invention - programmable push-pull force programmable online control.

5. Ningbo Haitian Precision Industry Co., Ltd. The machine incorporates high dynamic performance processing concept, and has the high speed and high precision characteristics required for processing complex profiles. It can be widely used in large aircraft mold surface machining, complex aluminum alloy thin-walled parts processing in high-speed rail industry, multi-angle deep cavity slots. Mold processing, large and medium-sized automobile cover parts inspection and processing. Main features: (1) Adopting German Kessler AC linkage double-swing milling head and Kessler 24000r/min electric spindle to meet high-efficiency and high-precision machining requirements; (2) X, Y, Z linear coordinate axes are all high preloaded roller straight lines Rail support; (3) The main shaft and the AC servo shaft are equipped with a constant temperature cooling system; (4) The Z axis uses a hydraulic balance mechanism to reduce the inertia and improve the dynamic response speed of the moving parts.

6. Ningbo Haitian Precision Industry Co., Ltd. The main machine adopts the international advanced T-bed structure, gantry-type column and hanging box layout. It has strong rigidity and high precision retention. It is suitable for the rough finishing requirements of precision-class box parts and is widely used in automobiles, rail transit and aviation. Key areas such as aerospace, valves, mining machinery, textile machinery, plastic machinery, ships, and electric power.

7. Beijing Gongyan Precision Machinery Co., Ltd. The machine is a high-efficiency numerical control equipment, which is used for five-axis linkage multi-face machining of complex parts such as aviation, nuclear power capacitors and 3C products, and is suitable for processing ordinary structural steel, titanium alloy and high-temperature alloy. It can complete boring, drilling, reaming, tapping and roughing and finishing in one setup, achieving high efficiency, high precision and high reliability. The single machine can be used for multi-variety and small batch production, and can also be connected to the production line to complete mass production according to user needs.

8, Hyundai WIA The machine is a cost-effective five-axis vertical machining center. It adopts a column-type and bed-integrated structure, which has good stability, rigidity and shock absorption. The X/Z axis is a box-in-box structure. The enhanced overall bed rigidity has the advantages of not only improving the heavy cutting ability, but also reducing the fine vibration during processing to achieve ultra-high precision machining. The machine can perform at its best in high quality composite machining and mold processing.

9. Ningbo Tianrui-Kraft The machine has reasonable structure and strong rigidity, and adopts German Rexroth linear slide rail to ensure high-precision machining capability. The main body is made of high quality cast iron, which is aging treated to eliminate internal stress and ensure the stability and long-term maintenance. A-axis cradle structure design, double support, using Italian LCM turntable, compact structure, strong rigidity, good carrying capacity, accurate positioning accuracy.

10, Wei Li Ming - Marcol Corporation The machine base and frame are made of mineral castings, which are thick and integral, with good rigidity and good vibration damping performance, ensuring high thermal stability and mechanical stability of the machine even under large loads. The oscillating milling head is compact and slender, ensuring good contact with the workpiece to be machined, and the milling head can be used for vertical and horizontal conversion. The power drive is realized by a worm-gear transmission with no clearance fine adjustment, which enables high machining capacity. The entire surface of the pedestal is scraped to ensure precision machining.

11. Doosan Group The structure of the machine is designed by finite element analysis, the static rigidity is increased by 30%, the dynamic rigidity is increased by 35%, and the frequency response and vibration damping performance are improved. The base castings are made of heavy-duty Meehanite cast iron for excellent vibration damping and high stability during processing. The machine adopts a built-in electric spindle, which optimizes the design to reduce the vibration and noise generated during high-speed machining. It uses 4 columns of precision ceramic bearings to improve productivity.

12. Makino Corporation This machine is suitable for large workpieces with a diameter of 1000mm and a weight of 1200kg. It can meet various needs in mold processing and high-precision parts processing, and realize centralized processing of various processes. The machine is equipped with a new generation of patented software for geometric intelligent control. Prior to machining, possible tooling errors or tool length setting errors can be checked in advance to minimize the emergency stop during operation. Once the machine is stopped, the status screen can be displayed immediately and the predicted interference position and the direction of the axis movement can be confirmed. The structure of the workbench is unique in design, and the "Z"-shaped cradle-type tilting form ensures that the center of gravity of the table and the workpiece always falls on the center of rotation of the B-axis and the C-axis without being affected by any inclination angle.

Conclusion The five-axis linkage machine is suitable for machining complex concave curved surfaces and shaped cavities. It has high speed and high precision. It has various types such as horizontal, vertical and gantry. The five-axis machine tool was originally used in the military industry, and has been widely used in more fields with the development of aero engines, ship engines, automotive molds, medical devices and related processing markets. With the continuous development of domestic advanced technology, the domestic five-axis machine tool has made a huge breakthrough. The key components of the five-axis machine tool are double-swing (or single-swing) milling heads, double-turn (or cradle) worktables, and localization. The five-axis machine tool requires that the matched CNC system and driver segment have fast processing speed and strong motion control capability. The guide rails of the five-axis machine tools mostly use linear rolling guides to meet the needs of high speed. The domestic market demand structure has been upgraded, high-end demand has grown, and the low-end market has shrunk, bringing a broader space for the development of five-axis machine tools. The five-axis machine tool can participate in the configuration of the automated production line to meet the customer's personalized customization and compound processing shift upgrade.

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