Machine tool dynamic error detection method and device
A dynamic error and detection method technology, applied in the direction of measuring/indicating equipment, metal processing machinery parts, metal processing equipment, etc., can solve the problems of long time consumption, achieve short time consumption, reduce grinding loss, and improve grinding efficiency Effect
Active Publication Date: 2016-11-30
无锡汉柏信息技术有限公司
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[0009] This method is used in machine tool detection and acceptance test measurement systems (such as KGM181 and VM182 measurement systems of Heidenhain, Germany) to directly detect machine tools or workpieces, which takes a long time and requires the removal of the entire transmission chain to measure one by one; in addition, this direct Although the detection method can exclude the influence of the machine tool itself and distinguish different influencing factors, it is only applicable to milling machines and lathes, which has great limitations
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[0026] The present invention will be described in detail below in conjunction with the implementations shown in the drawings, but it should be noted that these implementations are not limitations of the present invention, and those of ordinary skill in the art based on the functions, methods, or structural changes made by these implementations Equivalent transformations or substitutions all fall within the protection scope of the present invention.
[0027] ginseng Figure 1 to Figure 3 as shown, figure 1 It is a flow chart of the machine tool dynamic error detection method of the present invention; figure 2 It is a structural block diagram of a machine tool dynamic error detection device of the present invention; image 3 It is a schematic diagram of the frequency difference in the machine tool dynamic error detection method of the present invention.
[0028] The transmission chain is an important part of the machine tool, and its error is periodic. Measuring the synchro...
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The invention provides a dynamic error detection method of a machine tool. The method comprises: through the transmission chain of the coaxial end of the motor of the machine tool and the transmission chain of the follower end, driving the measuring sensor arranged on the transmission chain of the coaxial end of the machine tool motor and the transmission chain of the follower end to generate Two sets of differential measurement signals; receiving the two sets of differential measurement signals, and analyzing and processing the two sets of differential measurement signals to obtain the frequency difference and phase difference of the two sets of differential measurement signals; receiving the two sets of differential measurement signals The frequency difference and phase difference data of the signal are analyzed and processed to obtain the dynamic error detection data of the machine tool and the performance index data of the off-line machine tool. The invention directly measures the transmission chain on the machine tool without installing workpieces or unloading the transmission chain, which is time-consuming, saves manpower, facilitates operators to adjust the transmission chain in time, reduces grinding loss, and improves grinding efficiency.
Description
technical field [0001] The invention relates to the field of precision machine tools, in particular to a method and device for detecting dynamic errors of machine tools. Background technique [0002] The transmission error of the machine tool is used to measure the transmission accuracy of the transmission chain and the accuracy of the transmitted motion, and is an important measure of the performance of the machine tool. [0003] Due to the error in the transmission chain of the machine tool, this will lead to an error in the forming motion trajectory of the workpiece surface, which will eventually reflect the shape error of the formed surface on the processed workpiece. [0004] At present, whether it is the factory acceptance of precision machine tools (whether the performance indicators of the machine tools meet the factory standards), or the error detection of precision machine tool workpieces, it is necessary to detect the error of the machine tool transmission control...
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IPC IPC(8): B23Q17/00
Inventor 辛川
Owner 无锡汉柏信息技术有限公司