Method for realizing interpolation control in numerically controlled machine system

A technology of CNC machine tools and interpolation, which is applied in the field of CNC machine tool system and CNC machine tool motion control, and can solve problems such as inconvenience in production and work.

Active Publication Date: 2009-07-22
SHANGHAI WEIHONG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is still no better method in these aspects, which brings certain inconvenience to people's production and work.

Method used

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  • Method for realizing interpolation control in numerically controlled machine system
  • Method for realizing interpolation control in numerically controlled machine system
  • Method for realizing interpolation control in numerically controlled machine system

Examples

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Embodiment Construction

[0056] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0057] First of all, several nouns related to the technical field of numerically controlled machine tools in the present invention are explained as follows:

[0058] NURBS curve - non-uniform rational B-spline (Non-Uniform Rational B-Spline) curve.

[0059] Toolpath——In manufacturing, people use G / M code or other file formats that can be used to describe a machining trajectory to describe a machining trajectory, which is called a toolpath.

[0060] Interpolation—the refinement process of the tool path. What people describe in CNC machining is only the starting point and end point of the tool path, and does not describe how the machine tool moves from the starting point to the end point. This movement process needs to be completed by the machine tool control system (referred to as the CNC system). The general idea is to refine the tool path ...

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Abstract

The invention relates to a method for realizing interpolation control of a tool path in a numerically controlled machine tool system. The corresponding speed is obtained by planning the speed of each point in the point sequence under the condition of satisfying the preset acceleration and accuracy, forming an interpolation sequence according to the position point sequence and the corresponding speed of each point, and generating the tool path control signal according to the interpolation sequence and sending it to the CNC machine tool. device. Adopting the method of implementing interpolation control of the tool path in the CNC machine tool system ensures that the maximum deviation of the tool path during the machining process will not exceed the allowable range under the condition of satisfying the requirements of position accuracy and acceleration, and makes the difference of each point. The running speed is effectively constrained, the process is fast and efficient, the operation is simple and fast, the work performance is stable and reliable, and the scope of application is relatively wide, which has laid a solid foundation for the further development of CNC machine tool control technology.

Description

technical field [0001] The invention relates to the field of numerical control machine tool systems, in particular to the technical field of motion control of numerical control machine tools, and specifically refers to a method for realizing interpolation control of tool paths in a numerical control machine tool system. Background technique [0002] Manufacturing is the basic industry of the national economy, and the level of manufacturing is an important indicator of a country's industrial development. The quality level of CNC machine tools is related to the level of the national manufacturing industry. [0003] At the same time, Non-Uniform Rational B-Spline (Nurbs, Non-Uniform Rational B-Spline) curve is a local, simple method to describe curves in space, which is often used in CAD software and CAM software for curves Surface modeling design. [0004] Although in actual production, the CNC machine tool adopts the method of "line segment forming a plane" to process the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/41
Inventor 牟凤林汪永生郑之开汤同奎
Owner SHANGHAI WEIHONG ELECTRONICS TECH
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