3.2 CNC Milling Machine Project Evaluation (1) The amount of capital is small, the delivery time is short, and the effect is quick. Compared with the purchase of a new machine tool, it can generally save 60% to 80% of the cost, and the transformation cost is low. Especially for large and special machines, it is especially obvious. Generally, large-scale machine tools are rebuilt, only 1/3 of the cost of new machine tools is purchased, and the delivery time is short. However, in some special cases, such as the production and installation of high-speed spindles and pallet automatic exchange devices, it is too laborious and costly. The cost of retrofitting is often increased by 2 to 3 times. Compared with the purchase of new machine tools, it can only save about 50% of investment. (2) The mechanical properties are stable and reliable, and the structure is limited. The basic parts such as the bed and column used are heavy and solid casting components, not the welded components. The modified machine tool has high performance and good quality and can be used as a new equipment for many years. However, due to the limitations of the original mechanical structure, it is not advisable to make a breakthrough transformation. (3) Know the equipment and facilitate operation and maintenance. When purchasing a new device, it is not known whether the new device can meet its processing requirements. The transformation is not the case, the machining capacity of the machine tool can be accurately calculated; in addition, due to the use of the machine for many years, the operator has already understood the characteristics of the machine tool, and the training time is short and effective in operation and maintenance. Once the modified machine tool is installed, it can be fully loaded. (4) Make full use of existing conditions. You can make full use of existing foundations without having to rebuild the foundation as you would when purchasing new equipment. (5) The latest control technology can be used. According to the development speed of technological innovation, the automation level and efficiency of production equipment can be improved in time, the quality and grade of equipment can be improved, and the old machine tool can be changed into the current level machine tool. 4 Delta CNC Technology 4.1 PUTNC-H4C-M CNC system Figure 2 shows the PUTNC-H4C-M CNC system Zhongda PUTNC-H4C-M CNC system (Figure 2) features: (1) Hand wheel safety test. (Anti-collision function) Multi-language setting and simple graphic programming (2) With MACRO instruction, flexible design processing program. 4.2 ASDA-AB series servo drive Figure 3 Delta ASDA-AB series servo drive ASDA-AB series servo drive technology features: (1) Three built-in complete (position/speed/torque mode) basic control functions can be easily connected to the host controller. 5 Conclusion The numerical control transformation of ordinary milling machine is to increase the numerical control system control device on the ordinary milling machine, so that it has certain automation ability to achieve the predetermined processing technology goal. The purpose is to make the original machine tool have certain flexibility and improve production efficiency and quality. To solve the processing problems of complex parts. With the high open, humanized, simple operation and customized CNC system of CNC milling machine, the ordinary milling machine is transformed into an economical milling machine, which is simple and easy, improves the processing efficiency, reduces the processing cost and guarantees the parts. Machining accuracy is significant for complex parts, especially for curved and convex surfaces. Through the perfect automation products and reasonable solutions provided by Zhongda, it will promote the numerical control upgrade progress of ordinary machine tools and realize the rapid development of user enterprises.
HOLLOW 930/884
Width : 930mm/884mm
Efficient width : 860mm/830mm
Thickness : 10mm
Length : customized
Aplication : roof, ceiling, Wall Panel, etc.
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(3) The program capacity is 256K byte. It has the function of [edge pass].
(4) Standard I/O (24 INPUT; 16 OUTPUT), 3 sets of high-speed INPUT (50 μsec). Expandable I/O up to 32 INPUT; 32 OUTPUT.
(5) Using FLASH ROM architecture, it can quickly and easily update the system PLC and display screen.
(6) With the PLC, you can define the function of the button yourself and define it yourself.
(7) The resolution can be set to 7 digits, the response speed can reach 1000 Kpps, and the precision is extremely high.
(8) The spindle uses a variable frequency motor or a servo spindle. 
(2) The dynamic response is good, the servo setting time is 1ms, and the acceleration time of -3000RPM to 3000RPM is 10ms under no-load condition.
(3) PDFF (Pseudo-Derivative Feedback and Feedforward) The robust control architecture is correspondingly faster and has stronger suppression and compensation for external disturbances, so that when other external forces are suddenly involved, servo positioning or constant speed is less affected.
(4) Servo automatic gain adjustment function, which can automatically evaluate the load condition and set the servo gain reasonably, so that the servo debugging is simpler and faster, and the servo positioning is more precise. There is no overshoot and acceleration overshoot (5) to provide resonance suppression. Functional and low-pass filter functions can effectively compensate for mechanical deficiencies and defects.
(6) Delta's ASDA-AB series AC servo system has the indexing and positioning function. With the I/O planning of the CNC system PLC, the precise positioning control of the servo can be easily realized. Previous page 1 2