1. High speed and high precision

High speed and precision is the eternal goal of machine tool development.With the rapid development of science and technology, the upgrading speed of mechanical and electrical products is accelerated, and the requirements of precision and surface quality of parts processing are also higher and higher.In order to meet the needs of this complex and changeable market, the current machine tools are developing towards the direction of high-speed cutting, dry cutting and quasi-dry cutting, and the machining accuracy is also constantly improving.On the other hand, the successful application of motorized spindle and linear motor, ceramic ball bearings, high precision large lead hollow cooling and ball nut strong cooling of low temperature and high speed ball screw pair and linear guide rail pair with ball holder machine tools, and other functional parts of the market, also create conditions for the development of machine tools to high speed and precision.CNC lathe using electric spindle, cancel the belt, pulley and gear and other links, greatly reduce the inertia of the main transmission, improve the dynamic response speed and working accuracy of the spindle, completely solve the vibration and noise problems of the belt and pulley transmission when the spindle high-speed operation.The motorized spindle structure can make the spindle speed reach more than 10000r/min.Linear motor has high driving speed, good acceleration and deceleration characteristics, superior response characteristics and following accuracy.Using linear motor as servo drive, eliminate the ball screw this intermediate transmission link, eliminate the transmission clearance (including reverse clearance), small inertia, good system rigidity, can be precise positioning at high speed, thus greatly improving the servo accuracy.Linear rolling guide rail pair, because of its anisotropic clearance is zero and very small rolling friction, small wear, heat can be ignored, has a very good thermal stability, improve the whole positioning accuracy and repeated positioning accuracy.Through the application of linear motor and linear rolling guide pair, the fast moving speed of the machine tool can be increased from 10 ~ 20m/min to 60 ~ 80m/min, or even as high as 120m/min.

2 High reliability

The reliability of CNC machine tool is a key index of product quality of CNC machine tool.Whether numerical control machine tool can give play to its high performance, high precision and high efficiency, and obtain good benefit depends on its reliability.

3 CNC lathe design CAD, modular structure design

With the popularization of computer application and the development of software technology, CAD technology has been widely developed.CAD can not only replace the manual completion of tedious drawing work, more important is the design scheme selection and large machine static, dynamic characteristics of the analysis, calculation, prediction and optimization of the design, can carry out dynamic simulation of the working parts of the machine.On the basis of modularization in the design stage you can see the product’s three-dimensional geometric model and vivid color.Adoption of CAD, but also can greatly improve the work efficiency, improve the design of a success rate, thereby shortening the trial production cycle, reduce the design cost, improve market competitiveness.Through the modular design of machine parts, not only can reduce the repetitive labor, but also can quickly respond to the market, shorten the product development and design cycle.

4. Compound functions

The purpose of functional compound is to further improve the production efficiency of the machine tools and minimize the use of non-processing auxiliary time.Through the function of compound, can expand the scope of use of the machine tool, improve efficiency, to achieve a machine multi-purpose, a machine multi-function, that is, a CNC lathe can not only achieve the turning function, but also can achieve milling processing;Or in the milling machine can also be achieved on the grinding process.Baoji Machine Tool Factory has successfully developed CX25Y CNC turning and milling compound center, which has X, Z axis, C axis and Y axis at the same time.Through the C axis and Y axis, can realize the plane milling and partial hole, groove processing.The machine tool is also equipped with a powerful tool rest and a sub-spindle.The auxiliary spindle adopts the structure of the hidden motorized spindle, and the speed synchronization of the main spindle and the auxiliary spindle can be realized directly through the numerical control system.The machine can complete the whole processing by clamping the workpiece in one time, which greatly improves the efficiency.

5.Intelligent, networked, flexible and integrated

The 21 st century numerical control equipment will be a certain intelligent system.Intelligent content includes in the numerical control system in all aspects: in order to pursue the processing efficiency and processing quality of intelligent, such as the process of adaptive control, automatic generation of process parameters;In order to improve the driving performance and the use of intelligent connection, such as feedforward control, motor parameters of the adaptive operation, automatic identification of load automatic selection model, self-tuning, etc.;Simplify programming, simplify the intelligent operation, such as intelligent automatic programming, intelligent man-machine interface, etc.;There are intelligent diagnosis, intelligent monitoring and other aspects of the content, to facilitate the diagnosis and maintenance of the system.Networked CNC equipment is a hot spot in the development of machine tools in recent years.Networking of CNC equipment will greatly meet the needs of production lines, manufacturing systems and manufacturing enterprises for information integration, and it is also the basic unit to realize new manufacturing modes, such as agile manufacturing, virtual enterprise and global manufacturing.The development trend of CNC machine tools towards flexible automation system is as follows:From point (CNC single machine, machining center and CNC compound machining machine tool), line (FMC, FMS, FTL, FML) to surface (independent manufacturing island of workshop, FA), volume (CIMS, distributed network integrated manufacturing system), on the other hand to pay attention to the direction of application and economy.Flexible automation technology is the main means for the manufacturing industry to adapt to the dynamic market demand and the rapid update of products. It is the mainstream trend of the development of the manufacturing industry in various countries and the basic technology in the field of advanced manufacturing.Its focus is to improve the reliability and practicability of the system as the premise, to easy networking and integration as the goal, pay attention to strengthen the development and improvement of unit technology.CNC single machine to high precision, high speed and high flexibility direction development.CNC machine tools and their flexible manufacturing systems can be easily connected with CAD, CAM, CAPP and MTS, and develop towards the direction of information integration.The network system is developing towards the direction of openness, integration and intelligence.