Multi-channel PLC control method in multi-channel numerical control system and multi-channel numerical control system
A technology of a numerical control system and a control method, applied in the numerical control field, can solve problems such as complex numerical control system configuration, and achieve the effects of improving production efficiency, improving reusability, and reducing design
Active Publication Date: 2021-10-08
ZHONGSHAN MLTOR CNC TECH CO LTD
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Problems solved by technology
[0003] Since a numerical control system only has a set of machine tool operation panel and a set of IO modules, and multi-channel requires an independent operation panel, this makes the multi-channel numerical control system appear in the practical application of the operation of different channels; at the same time, with With the increase in the number of channels, the configuration of the CNC system is more complicated, which is a challenge for both the system operator and the system design and maintainer
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[0014] Attached as follows Figures 1 to 3 , to further describe the application scheme:
[0015] See attached figure 1 , the multi-channel numerical control system 1 includes an NC unit 2 for performing interpolation operations and axis control, a PLC unit 3 for electrical control of the machine tool 5, and an I / O unit 4 for connecting the machine tool 5 and the PLC unit; the NC Unit 2 includes a plurality of NC modules NC1-NCn that correspond to each channel of the numerical control system and are independent and parallel to each other; the PLC unit 3 includes PLC modules PLC1-PLCn that are paired with NC modules NC1-NCn; each PLC module PLC1-PLCn is connected And share the I / O unit 4, and execute control output sequentially within a time period. The NC module NC1-NCn is responsible for controlling the servo motor for interpolation action, and the PLC module PLC1-PLCn is responsible for the IO control of the machine tool 5 panel and machine tool 5 electrical. Each channel ...
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The invention provides a multi-channel PLC control method in a multi-channel numerical control system and the multi-channel numerical control system, which improve the electrical control efficiency of a compound machine tool and are realized through the following technical means: the system comprises an NC unit for executing interpolation operation and shaft control; a PLC unit used for electrically controlling the machine tool, and the I / O unit is used for being in butt joint with the machine tool and the PLC unit. The NC unit comprises a plurality of NC modules which respectively correspond to channels of the numerical control system and are mutually independent and parallel; and the PLC unit comprises PLC modules which are paired with the NC modules one by one, and the PLC modules are connected with and share the I / O unit and sequentially execute control output within a time period. According to the method, each channel is independently provided with an NC module and a PLC module, and each PLC module is provided with a first address range for independent access of the NC module and a second address range for sharing information with PLC modules of other channels; in a time period, the PLC modules execute control output in sequence.
Description
technical field [0001] The invention belongs to the technical field of numerical control, and specifically relates to a multi-channel PLC control method in a multi-channel numerical control system and a multi-channel numerical control system. Background technique [0002] Due to the limitations of its working mode, the single-channel CNC system needs to frequently perform workpiece loading and unloading, tool changing and other processes, resulting in errors in time and process, and can no longer meet market demand in terms of machining accuracy and production efficiency. Compared with the multi-machine sub-process processing method of the traditional single-channel CNC system, the machine tool controlled by the multi-channel CNC system has the advantages of multi-process compound processing, which can effectively shorten the product processing time, improve the product processing accuracy, and greatly improve the production efficiency. Therefore, the demand increasing day b...
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IPC IPC(8): G05B19/414
CPCG05B19/4147G05B2219/34013Y02P90/02
Inventor 赵汝焕周永洪林鑫林守金徐集涵周昌李锦轩黄豪
Owner ZHONGSHAN MLTOR CNC TECH CO LTD