CNC machine tools still need to comply with technical standards to improve product performance

According to the consumption data of existing machine tools, under the overall economic planning of the national macro-control, the machine tool market will increase by 14.2% to 389 billion yuan in 2013. This strong growth momentum will consolidate China's current status as the world's largest machine tool consumer and producer. While increasing the import of high-end machine tools, it also formulated the development plan of the domestic machine tool industry, especially in the field of numerical control, and proposed the overall planning of the CNC generation, which improved the numerical control rate of the whole industry and incorporated it into the development system.

In fact, the vast majority of machine tools used in China are ordinary machine tools. The number of ordinary machine tools is huge, and safety issues are highlighted. Therefore, security issues have become a major obstacle to their development. The high processing precision and high productivity of CNC machine tools are increasingly applied in the manufacturing industry, effectively ensuring product quality and output.

Numerical control transformation of old machine tools is also an important way to improve the numerical control efficiency of machine tools. After the ordinary machine tool completes the numerical control transformation, it can greatly improve the processing efficiency, automation and intelligence of the machine tool. It reduces the possibility of operators touching dangerous parts; the operating system and operation interface are more and more ergonomic, which can effectively reduce the operator's error rate and reduce accidents caused by mistakes.

Numerical control transformation of machine tools can reduce the cost of purchasing CNC machine tools, save money for enterprises, increase safety performance for active equipment, improve the intrinsic safety level of machine tools, solve low numerical control, frequent personnel injury accidents, low safety level, and production. The problem of inefficiency.

Since the advantages of ordinary machine tools after the NC transformation are obvious, what problems should the industry pay attention to during the transformation process?

Understand the model and detailed parameters of the machine to be modified

Before the CNC transformation of the machine tool, the mechanical precision of the machine tool should be tested, and the problem can be repaired during the implementation of the machine tool transformation. If there are many problems in the machine tool system, such as the old machine tool in the mechanical structure design, manufacturing defects, the machine tool CNC transformation will not have much significance.

The key work of machine tool transformation. To understand the old machine tool CNC system manufacturer model, the old machine tool electrical system due to component aging failure from time to time. The number of control axes, spindle, feed axis drive configuration, spindle motor power, feed axis motor torque, etc.

Complete technical documentation can shorten the technical preparation time for machine tool retrofits. Among them, electrical schematic, PLC sequence, machine maintenance manual, hydraulic, pneumatic, lubrication schematic, mechanical assembly drawing, etc., check whether the random technical data is complete. Have to study it carefully. The technical information that should be paid attention to in particular may be incorrect and does not match the actual machine tool. This is due to the general drawings of the series models provided by some machine tool manufacturers. The electrical and hardware changes of individual machine tools are not marked on the electrical data. This requires me to check the actual errors against the machine tool and carefully check against mistakes.

Develop a strict transformation plan to ensure product performance

CNC transformation plan: According to the existing control level of the machine tool, workpiece processing requirements, and corporate capital status, select the corresponding low, medium and high-grade CNC system. When choosing a CNC system, you need to consider the products of the mainstream manufacturers. For example, the foreign CNC system can choose FANUC Siemens system, etc. The domestic CNC system can choose Huazhong and Kanedi system. It should also be as consistent as possible with the CNC system of other CNC machine tools available to the machine tool user. The advantage of this is that it is convenient for maintenance personnel to repair the machine tool on a daily basis; the centralized CNC system also facilitates the reduction of spare parts types. There is no need to waste money for the pursuit of a high grade.

The spindle servo system transformation scheme: the original drive unit and the spindle motor can be not stored. The old CNC machine tool spindle control generally adopts DC servo or AC analog servo drive system (generally /-10V analog signal) according to the use requirements. It is replaced by an AC digital servo drive system or controlled by a frequency converter. The original drive system can also be stored, such as a good-quality AC analog servo drive system; the DC servo drive system can store a good DC motor and replace the old drive with a new DC servo control.

Of course, the above schemes are only part of the entire transformation process, and the industrial control Xiaobian will not elaborate here. All in all, the traditional machine tools need to follow strict technical standards throughout the CNC transformation process to ensure that the machine performance does not decline after the completion of the transformation, thus paving the way for the future development of the billion-dollar transformation market.