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Method and system for planning auxiliary discrete movement of computer

A computer-aided, discrete motion technology, applied in the direction of electrical program control, digital control, etc., can solve the problems of large contour error, no active axis and linkage axis, ignoring the non-European error of the tool path curve, and achieve outstanding substantial progress, Save software and hardware computing resources, the effect is remarkable

Inactive Publication Date: 2011-05-18
数驱技术有限公司
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Problems solved by technology

In the existing speed forward control, the time is locked as the system clock by the interpolation period, and the simplest time control cannot be used, and the optimization of the smoothness of the coordinate axis motion and the refinement of the acceleration and deceleration control cannot be realized.
[0039] 4. The existing speed forward control completely ignores the discrete geometric and discrete kinematics characteristics of the tool path curve, for example, completely ignores the non-Euclidean error of the tool path curve, has no concept of intrinsic L division, and has no active axis and The concept of coupled axis
Therefore, the existing speed look-ahead control will inevitably produce a large contour error

Method used

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  • Method and system for planning auxiliary discrete movement of computer

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Embodiment Construction

[0084] The geometric structure of the workpiece contour is predetermined, therefore, the kinematic relationship between the coordinate axes is deterministic. The core task of the digital control system is to manufacture digital control information, and realize the tool path curve through the synthesis of the displacement (angular displacement) of the relevant coordinate axes, which is used to control the coordinate axes in the working machine to complete a given deterministic mechanical movement. The composite displacement generated by the displacement of the relevant coordinate axes must be realized by the linkage of the relevant coordinate axes; the continuous synthesis of the composite displacement needs to control the time interval between the composite displacements. The linkage of related coordinate axes is a geometric problem, and the continuous synthesis of the combined displacement involves feed speed and acceleration and deceleration control, which is a motion plannin...

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Abstract

The invention discloses a method for planning the auxiliary discrete movement of a computer for an open type numerical control system, which plans the T partition delta ti (i=1,..., m) based on a driving shaft and adjusts the linkage list and follow-up list of the associated data streams based on the intrinsic L partition of a curve, thereby realizing the optimization of the movement stationarity of coordinates and the fineness of acceleration and deceleration control.

Description

technical field [0001] The invention belongs to the field of advanced control and advanced manufacturing, and specifically relates to a computer-aided discrete motion planning method and system of an open numerical control system. technical background [0002] Computer numerical control system (referred to as numerical control system) aims to control the deterministic motion relationship between mechanical systems and the logical relationship between control switch devices. The logic control of the switching device adopts PLC control, that is, programmable logic control, which belongs to conventional technical means. Controlling the deterministic kinematic relationship between coordinate axes is the main goal of the CNC system. [0003] In the field of advanced manufacturing, the feed rate F is a process parameter specified by the user, which refers to the speed at which the reference point on the tool moves relative to the workpiece along the tool path. The contour of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/19
Inventor 江俊逢
Owner 数驱技术有限公司
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