Computer-assisted discrete geometric programming method

A computer-aided, geometric technology, applied in the direction of electrical program control, digital control, etc., to solve the effect of openness

Inactive Publication Date: 2012-07-18
数驱技术有限公司
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Problems solved by technology

[0026] 2. In the interpolation iterative control method, the interpolation iterative algorithm involves both the numerical calculation method and the real-time implementation of the operation rules of the method on the computer. The real-time iteration of digital control information and the real-time iteration of the discrete process must involve the real-time operating system Process scheduling and thread scheduling in , leading to the closure of discrete methods of numerical control information
[0027] 3. In the interpolation iterative control method, the real-time realization of the entire discrete process of digital control information will inevitably lead to the closure of the entire control process and the interface between the discrete, sending, and execution of digital control information.
Obviously, CAD / CAM / CAPP systems and other NC programming systems also have micro-segment ΔL i The optimization problem of

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specific Embodiment approach 1

[0202] Such as figure 2 A CADGP system shown includes a hardware platform, a software platform and an application software system. The hardware platform is a general PC system, and the software platform is a graphical interface operating system.

[0203] The software platform also includes 3D graphics libraries such as OpenGL.

[0204] OpenGL is the abbreviation of Open Graphics Library. It is a set of three-dimensional graphics library independent of the operating system and hardware environment. It has powerful graphics functions and good cross-platform portability, and has become a de facto graphics standard. OpenGL is widely used in computer simulation, visualization technology, solid modeling, CAD / CAM / CAE and many other fields. With the help of OpenGL's powerful 3D simulation capability and good man-machine interface in the PC system, the CADGP method combines discrete digital information, the process of manufacturing discrete digital information, and the process of man...

specific Embodiment approach 2

[0251] In the mechanical system, it is generally an orthogonal coordinate system. The so-called orthogonal coordinate system is a coordinate system whose coordinate axes are perpendicular to each other, for example, a rectangular coordinate system, a polar coordinate system, and the like. High-precision machining requires high perpendicularity and parallelism between coordinate axes. During the installation and commissioning of the machine tool, use testing tools such as a spirit level, standard square ruler, square ruler, and collimator to move each coordinate axis and repeatedly adjust the relevant adjustment parts to ensure the verticality, parallelism and other geometric dimensions between the coordinate axes. The precision meets the design requirements. This requires high-precision adjustment components and high-precision adjustment instruments, as well as rich adjustment experience and perfect technical solutions. The data flow association control method no longer rega...

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Abstract

The invention discloses a computer-assisted discrete geometric programming method and a computer-assisted discrete geometric programming system of an open numerical control system. Geometry of a tool path curve is not Euclidean geometry but discrete geometry. The discreteness of the tool path curve is a pure discrete geometric problem. According to a basic principle of the discrete geometry, L partition of the curve is constructed through guide points according to an optimization target based on a discrete geometric structure of the curve, so non-Europeanized error of the tool path curve is eliminated, and the problem of optimization of discrete position information is solved. By the method and the system, visualization of the discrete position information and visualization of a discrete method are realized; and the system is provided with an intuitive, simple, convenient and open human-computer interface.

Description

technical field [0001] The invention belongs to the field of advanced control and advanced manufacturing, and specifically relates to a method and system for manufacturing discrete position information in an open numerical control system. technical background [0002] So far, the existing numerical control system has been using the interpolation iterative control method to digitally control the mechanical system. Interpolation accuracy and interpolation speed have become the core technical indicators of existing CNC systems. [0003] The basic technical scheme of the interpolation iterative control method is that, for a given tool path (Tool Path) curve and the feed rate of the tool, under the control of the real-time operating system, the interpolation cycle is used as the time-sharing cycle, and the interpolation iteration is used. The algorithm calculates in real time all the digital control information of the relevant coordinate axes at a given moment. The numerical co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4103
Inventor 江俊逢
Owner 数驱技术有限公司
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