Broaching tool wear and damage quantitative prediction system and method based on vibration signals
A technology of tool wear and vibration signal, applied in manufacturing tools, measuring/indicating equipment, metal processing machinery parts, etc., can solve the problems of workpiece and tool scrap economy, loss, etc.
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Embodiment 1
[0029] refer to figure 1 , a quantitative prediction system for broaching tool wear and damage based on vibration signals, including broaching tool 2, acceleration sensor 3 in the direction of broaching, acceleration sensor 4 in the direction of cutting depth feed, data acquisition card 5 and computer 6, acceleration in the direction of broaching The sensor 3 and the acceleration sensor 4 in the direction of cutting depth are installed on the clamping tooling of the workpiece 1, or on the sliding plates on both sides of the broaching machine; The sensor mainly measures the acceleration signals in the broaching direction and the cutting depth feeding direction; the two acceleration signal sensors are connected with the data acquisition card 5, and the data acquisition card 5 obtains digital signals and transmits them to the computer 6, and the structural health of the broach is analyzed after spectrum analysis. Quantitative assessment of status.
[0030] In this embodiment, th...
Embodiment 2
[0032] In the above example, see figure 2 , a method for quantitatively predicting wear and damage of broaching tools based on vibration signals, using the system for quantitatively predicting wear and damage of broaching tools based on vibration signals described in claim 1 to operate, and the operating steps are as follows:
[0033] ① The broaching tool performs broaching motion at a constant speed, and its teeth will excite the workpiece according to a certain period;
[0034] ② Under the excitation of periodic load, the spectrum signal presents a multiplied frequency signal with the same period as the load;
[0035] ③ Excitation signals with different amplitudes lead to changes in the amplitude at the multiplier of the spectrum signal;
[0036] ④Analyze the amplitude at the double frequency of the cutting excitation of the spectrum signal, and quantitatively predict the wear and damage of the broach.
[0037] In this embodiment, when the acceleration sensor collects the...
Embodiment 3
[0039] In this embodiment, the vibration signal-based quantitative prediction system for broaching tool wear and damage is used in conjunction with factory automation production equipment. Such as figure 1 As shown, the acceleration sensor 3 in the broaching direction and the acceleration sensor 4 in the feeding direction of the cutting depth are installed on the slide plates on both sides of the broaching machine, and mainly measure the acceleration signals in the broaching direction and the feeding direction of the cutting depth.
[0040] When the broaching machine is broaching the workpiece, the acceleration sensor collects the acceleration change signal generated by the broaching tool during the broaching motion. Acceleration signals are read with a data acquisition card, and fast Fourier transforms are performed respectively to obtain spectrum signals. Under periodic load excitation, the spectrum signal presents a multiplied frequency signal with the same cycle as the ex...
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