CNC systems for CNC machine tools

Abstract

A numerical control system for a numerical control machine tool and a numerical control machine tool. The numerical control system comprises an ARM processor (101) and a DSP processor (102), wherein the ARM processor (101) operates a first operating system for realizing a human-machine interaction process, the DSP processor (102) operates a second operating system for realizing a numerical control process, wherein the ARM processor (101) is connected to a keyboard (104) and / or a main control panel (103) and is responsible for forwarding a user instruction input by the keyboard (104) and / or the main control panel (103) to the DSP processor (102), and the DSP processor (102) is responsible for calling a corresponding machining code according to the user instruction and executing a corresponding numerical control process. By means of the technical solution, cost can be saved, and meanwhile, instantaneity and accuracy of numerical control can be ensured.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a numerical control system for a numerical control machine tool. Background technique [0002] CNC machine tools are mechatronic products formed by the penetration of new technologies represented by CNC systems into the traditional machinery manufacturing industry, and their technical scope covers many fields. Compared with the traditional machinery manufacturing industry, CNC machine tools have high processing efficiency, high processing precision and low labor intensity. [0003] The structure of the CNC system currently on the market roughly has the following types: [0004] 1. X86 processor + real-time operating system [0005] 2. ARM processor + real-time operating system [0006] For large foreign companies such as Siemens and FANUC, the first solution is basically adopted, because this solution can fully meet the needs of high-end CNC. [0007] For some ...

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Problems solved by technology

[0007] For some small and medium-sized manufacturers, most of them adopt scheme 2. Scheme 2 can only be used for some lower-end CNC systems, because the ARM processor has limited computing power, and it is difficult to improve the machining accuracy.

[0008] For the two solutions introduced above, from a technical point of view, solution 1 is obviously the best solution, but the cost is high. First, the motherboard development of the X86 processor needs to be authorized by the chip manufacturer, and second, it can run stably on the X86 processor. Most of the real-time operating systems on the Internet are not free, such as vxWorks, QNX, etc. The addition of the two costs will undoubtedly increase the cost of the CNC system and raise the threshold of high-end CNC

[0009] The disadvantage of scheme 2 is that the ability of ARM processor is limited, especially the ability of floating-point calculation, which is far inferior to that of DSP (digital signal processing, digital signal processing) processor, so even if a real-time embedded operating system is used, the interpolation cycle cannot Too small, it is difficult to realize some complex functions in finishing or numerical control

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