How to improve the reliability of CNC machine tools - News - Global IC Trade Starts Here.

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The selection of high-performance, high-reliability CNC systems, servo drives and high-quality components in the design of CNC machine tools can greatly improve the reliability of domestic CNC machine tools. Since the same type of CNC machine tool also uses the same type of CNC system, the difference between the precision and performance of the domestic machine tool compared with the imported CNC machine tool is not too big, and it still has certain advantages in after-sales service and price, but The credibility of the two in the user's mind is not the same. This is an urgent problem to be solved in front of the domestic CNC machine tool manufacturer. The reason is multi-faceted, and the key is still at the source, that is, the design, service and management level of domestic CNC machine tool manufacturers. The following describes how our company can enhance the quality awareness of employees through the reliability design in the process of designing and manufacturing multi-station CNC combined machine tools, guarantee the product quality with work quality, improve the reliability of CNC machine tools, and provide users with satisfactory and applicable products. And continue to win user orders.
1. Demonstrate the feasibility of the product design scheme through the process test The multi-station CNC combined machine tool designed and manufactured by our company is a special machine tool for deep hole machining. On the basis of in-depth understanding of user needs, the first step is to conduct a process test on the key technology involved in user demand--"deep small hole processing technology", and demonstrate the feasibility of product design through process test to ensure that the designed product can meet user needs. .
2. The modular design of the multi-station CNC combined machine tool with mature technology adopts the modular components verified by our company, such as CNC sliding table with linear rolling guide, small drilling power head and high-precision CNC turning table. Wait.
3. Summarize experience and lessons. Analyze the quality information of previous production combined machine tools and after-sales service feedback, and propose improvements on issues such as protection, wiring and appearance of machine tools.
4. Select high-quality control system and parts machine tools to select high-performance, high-reliability CNC system, servo drive, supporting functional components, electrical components, and detection components to ensure machine reliability. The numerical control system of the machine tool adopts the POWERMATE-D motion controller of FANUC of Japan. It has two-axis control function and can also control one analog/digital spindle. The two servo axes can be configured in one channel or in two. In the channel. The system has an integrated plc that connects up to 16 POWERMATE-D motion controllers via the FANUCI/OLINK serial data transfer bus. Multiple motion controllers can share a single CRT/MDI display. These characteristics make the distributed control system composed of the motion controller have good scalability, especially suitable for various multi-station CNC combined machine tools with different working positions. The servo drive unit is equipped with the FANUCa series digital AC servo system. The closed-loop position detecting component of the high-precision CNC rotary table is selected from the circular grating produced by HEIDENHAIN.
5. Correct use of the function of the CNC system High-performance CNC system In the application, due to incorrect parameter setting and unreasonable logic control program, the CNC machine tool often carries problems with the factory, and only when the user uses it, it is found that there is a problem, which affects The reputation of the product. For example, when the pitch error compensation function of the application system corrects the positioning accuracy of the CNC rotary table, the incorrect parameter setting will rotate the rotary table to the same direction, which will bring more and more errors; incorrect acceleration/deceleration time constant The setting will cause an impact on the machine's transmission mechanism.