A real-time prediction method for the temperature of CNC machine tool components
A CNC machine tool and real-time prediction technology, applied in program control, computer control, general control system, etc., can solve problems such as real-time prediction of the temperature of CNC machine tool components that cannot be applied, and achieve the effect of small error, low cost, and reduction of thermal error.
Active Publication Date: 2020-01-03
HUAZHONG UNIV OF SCI & TECH +1
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CN201410088166.3 provides a thermal error prediction method for heavy-duty machine tools considering the ambient temperature. This method is used for thermal deformation prediction of heavy-duty machine tools. The disclosed prediction method and related prediction formulas cannot be applied to the real-time prediction of the temperature of CNC machine tool components
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0036] figure 1 It is a flowchart of a real-time prediction method for machine tool component temperature constructed according to a preferred embodiment of the present invention, as figure 1 As shown, a method for real-time prediction of the temperature of a CNC machine tool component provided by an embodiment of the present invention includes the following steps:
[0037] S1 collects the sen...
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The invention belongs to the field of numerical control machine tool temperature monitoring and prediction, and particularly discloses a numerical control machine tool part temperature real-time prediction method. The method comprises the following steps that the sensor signal of the numerical control machine tool is acquired in real time and preprocessed; the machine tool part temperature variation quantity deltaT<in> caused by the internal heat source and the machine tool part temperature variation quantity deltaT<tex> caused by the environment temperature from the moment of t<i-1> tothe moment of t are calculated according to the preprocessed signal data; deltaT<in> and deltaT<tex> are superposed so as to obtain the final temperature variation quantity deltaT of the machine tool part from the moment of t<i-1> to the moment of t; and the temperature of the numerical control machine tool part is predicted in real time: T=T<i-1>+deltaT. The method has the advantages of high prediction speed and high accuracy and is easy and convenient to use without changing the mechanical structure of the numerical control machine tool or influencing the dynamic characteristics of the numerical control machine tool so as to realize real-time prediction of the temperature of the machine tool part.
Description
technical field [0001] The invention belongs to the field of temperature monitoring and prediction of a numerical control machine tool, and more specifically relates to a method for real-time prediction of the temperature of a numerical control machine tool component. Background technique [0002] Under non-constant temperature conditions, the mechanical structure of the machine tool will be thermally deformed under the combined action of the internal heat source and the external environment during machining, which will result in reduced machining accuracy or even failure. A large number of studies have shown that thermal error is the largest error source of precision machining machinery such as CNC machine tools, accounting for about 70% of the total error. Since the generation of internal heat source and the change of external ambient temperature cannot be avoided during the processing of CNC machine tools, it is necessary to monitor and predict the temperature of key comp...
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IPC IPC(8): G05B19/404
CPCG05B19/404
Inventor 向华潘成龙周浩周会成杨建中陈吉红
Owner HUAZHONG UNIV OF SCI & TECH