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In the Taizhou region of Zhejiang, the crystal cutting machine industry has developed rapidly, and the equipment is a special plane. The market has a certain capacity. Each manufacturer has to seize the market as soon as possible to obtain greater profits, and a lot of work has been done on the processing equipment and the degree of automation. The processing efficiency and product quality have been improved. The automatic crystal cutting machine has emerged as the equipment required for cutting. This article describes the application of Delta electromechanical products in crystal cutting machines. 1 The composition of the control system Delta servo: two ASD-A2023MA, one ASD-B0123MA, one ASD-B04123MA; Delta inverter: VFD00212LA; Delta PLC: two DVP28SV, one DVP16SP; Delta human-machine : DOP-A57THTD one; Delta power: DTC1000 one. 2 Working principle and control requirements (1) The DVP28SV has 4 channels of high-speed pulse output (200kHz), two axis interpolation instructions, and 16kSteps program memory, which can be connected to SA/SX/SC/SS/SV full range of expansion machines, including Digital input/output (up to 512 points for maximum input/output expansion points), analog modules (A/D, D/A conversion, and temperature control unit) and new high-speed expansion models to meet a variety of applications. And small size, easy to install; (2) the use of Delta ASD-A2023MA servo tuning time is less than 1ms, speed bandwidth up to 450Hz, low speed operation characteristics, at 1rpm speed command, the actual error of a full circle at most 0.5, No-load high-speed DSP performance from -3000rpm to 3000rpm acceleration time of 10ms for high-speed DSP control; (3) Two ASD-A2023MA servos are used to control the cutting machine's payoff and take-up, respectively, an ASD-B0123MA servo control When the wire is swung back and forth, another ASD-B0123MA controls the vertical lift of the feeding machine. It requires the speed of the rotor movement of the cutting and retracting line to meet the requirements of high-speed cutting. The control requirements are achieved through PLC and servo; (4 ) The inverter is mainly used to control the running speed of the line motor and the cooling motor and keep the device running at a constant speed. 3 System characteristics and functions (1) The selection of transistor output module can improve the response performance of the whole system, and ensure the life of the machine with frequent actions; (2) Very friendly man-machine interface, easy operation and easy learning; There is alarm information pop-up; (3) The entire system is compact, eliminating many relays and buttons, and the user is easy and convenient to maintain; (4) The selection of B-series inverter ensures that the spindle can run normally at high speed and low speed. 4 Main parameter calculations Servo feed frequency (Hz) = Feed set speed (mm/s) / Lead screw pitch (mm) * 10000* Electronic gear ratio Frequency converter operating frequency (Hz) = Set speed (r/min )*5000(Hz)/480(r/min) 5 Main parameters The main parameter settings are shown in Table 1 and Table 2. 6 Conclusion After actual testing, the above control scheme has successfully achieved the requirements of the crystal cutting machine control process, achieving high cutting speed and accuracy, and the whole machine has been recognized by customers. Compared with the control equipment using foreign famous brands of components, under the premise of ensuring consistent performance, the processing efficiency is improved by 1/3 and the cost is greatly reduced.
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