A Feed Rate Optimization Method for NC Machining Based on Material Removal Rate

An optimization method and feed rate technology, applied in the direction of program control, computer control, general control system, etc., can solve the problem of low processing efficiency and achieve the effect of optimizing processing details

Active Publication Date: 2018-03-27
中国科学院沈阳计算技术研究所有限公司
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Problems solved by technology

[0003] Aiming at the problem of low machining efficiency caused by relatively conservative machining feed rate values ​​in the existing NC machining codes, the present invention considers that the material removal value can be obtained directly in the existing virtual material removal simulation application, which is the specific value of the tool According to the machining instruction of each line of code, the calculated volume of the workpiece after virtual cutting of the workpiece is cut

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  • A Feed Rate Optimization Method for NC Machining Based on Material Removal Rate
  • A Feed Rate Optimization Method for NC Machining Based on Material Removal Rate
  • A Feed Rate Optimization Method for NC Machining Based on Material Removal Rate

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[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] The present invention comprises the following steps (as figure 1 shown):

[0032] Read the data of each row of the processing code, if all the data rows have been read, the processing code optimization process ends. Otherwise, read the i-th row of data, and directly obtain the tool initial position P according to the read data before the i-th row and the i-th row of data s The coordinates (x s ,y s ,z s ), end position P e The coordinates (x e ,y e ,z e ) and the actual feed rate F of the line i .

[0033] Calculate the predicted value L of the machining distance of the tool under the control of the i line of machining instructions i . Among them, L i Calculate according to the following formula:

[0034]

[0035] Apply the existing virtual material removal simulation, and directly obtain the volume of the cut part of the workpiece after the t...

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Abstract

The invention relates to a method for optimizing feed rate of numerical control machining with reference to material removal rate. Especially in the application of CNC machining, through the coordinate data of the initial point and end point of the tool in each line of processing code, the feed rate of each line and the Boolean subtraction operation of each line of the workpiece and tool scanning volume in the virtual material removal simulation, the material removal amount is obtained, and the removal amount is calculated. Rate and determine the relationship between feed rate and removal rate, and optimize the feed rate of each line in the processing code to improve the efficiency of CNC machining.

Description

technical field [0001] The invention relates to numerical control machining technology, in particular to a method for optimizing feed rate of numerical control machining with reference to material removal rate. Background technique [0002] The given feed rate in the traditional NC machining process only refers to the mechanical performance limit of the tool material. Due to the lack of analysis of the geometric and physical processes in the machining, the given machining feed rate value is relatively conservative, so it is greatly reduced. improved processing efficiency. At present, the optimization of feed rate is mainly based on the dynamic cutting force and material removal rate in the machining process. Because there are many constraints to solve the instantaneous dynamic cutting force, it is difficult to accurately give the predicted value with a small error, and the feed rate optimization method based on the removal rate is simpler and more effective. In addition, m...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4097
Inventor 郭锐锋王鸿亮刘娴张忆文邓昌义
Owner 中国科学院沈阳计算技术研究所有限公司
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