Mold feeding height measurement calibration method of pressing machine
A technology of die-loading height and press, applied in the direction of presses, manufacturing tools, etc., can solve the problems of inconvenient operation, low degree of automation and intelligence, and achieve the effect of simple operation
Active Publication Date: 2010-06-23
YANGLI GRP CORP LTD
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[0005] The purpose of the present invention is to provide a calibration method for the measurement of the height of the mold loading of the press, which overcomes the shortcomings of the existing calibration measurement method, such as inconvenient operation, low degree of automation and intelligence, and realizes the calibration of the encoder measurement through the present invention. On the basis of adding hardware equipment, the operation is simple, no professionals and professional software are required, and the measured value can be calibrated and corrected through the man-machine interface
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[0014] Further illustrate the present invention in conjunction with accompanying drawing and embodiment, as figure 1 As shown, the present invention includes an absolute value rotary encoder fixed in a slide block without a reset switch, a press programmable controller PLC connected to the absolute value rotary encoder via a field bus, and a man-machine connected to a programmable controller PLC interface.
[0015] The process of the present invention is as figure 2 As shown, the calibration starts, enter the calibration screen of the man-machine interface; input the actual measured height value; the man-machine interface transmits the calibration data, that is, the actual measurement data, to the PLC; the PLC receives the data, performs calculation and analysis; selects the corresponding calibration program. That is, the algorithm program written for the three situations when the encoder is measured; the algorithm program is determined, and the correct value after calibrati...
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The invention relates to a mold feeding height measurement calibration method of a pressing machine, which belongs to the technical filed of a control system of the pressing machine. The invention utilizes the characteristics that when the positive direction rotation output of an absolute value rotation coder without a reset switch fixed in a slide block exceeds the maximum value, the output is progressively increased again from the initial point, and conversely, when the reverse direction rotation of the coder is smaller than 0 bit, the output is progressively decreased from the maximum value. A PLC program of the calibration algorithm is designed, so the measurement state of the coder can be determined according to an input actual measurement value only through inputting manually measured actual mold feeding height value of the slide block before entering the calibration picture of a human-computer interface. Thus, that any position can reach the zero point of the coder in the measurement process of the coder can be known, so the corresponding algorithm program can be determined. The invention realizes the effects of simple operation and no need of professional staff and professional software, and the measurement value can be calibrated and corrected through the human-computer interface.
Description
technical field [0001] The invention relates to a calibration method for measuring the mold loading height of a press, and belongs to the technical field of press control systems. Background technique [0002] At present, when measuring the mold height of a press, two devices are generally used, a mechanical display and an electronic absolute value rotary encoder. Because the multi-turn absolute value rotary encoder (hereinafter referred to as the encoder) has higher accuracy, it is different from the The press control system is capable of data exchange, so it has been widely used. Its working principle is as follows. The encoder installed in the slider is driven to rotate through the adjustment mechanism inside the slider to measure the adjustment of the mold loading height of the slider. The real-time detection data of the encoder is transmitted to the programmable controller through the field bus (the following PLC for short) to calculate and display the height value of ...
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Inventor 胡鹏
Owner YANGLI GRP CORP LTD