Non-destructive testing device for circular saw blade based on acoustic resonance spectrum

Abstract

The invention discloses a non-destructive testing device for a circular saw blade based on an acoustic resonance spectrum. The device is mainly used for quality inspection of the circular saw blade before leaving a factory. The device is characterized by comprising a bracket, a microcontroller, an electrodynamic hammer, an audio collector, a signal acquisition and data processing smart controllerand a personal computer. The electrodynamic hammer is fixed to the bracket for tapping the circular saw blade to generate vibration and sound, the micro controller is connected with the electrodynamichammer, so that the electrodynamic hammer generates taping force with the same magnitude each time, and the audio collector and the smart controller are used for collecting audio signals generated bythe vibration of the circular saw blade and performing data processing. The non-destructive testing device for the circular saw blade can detect inferior circular saw blades with cracks, notches, bubbles, broken teeth and the like, the unqualified circular saw blades are screened out before leaving the factory, the device has high detection precision and comprehensive defect detection, and a reliable and comprehensive automatic detection method is provided for circular saw blade manufacturers.

Description

technical field [0001] The invention relates to the field of non-destructive testing, in particular to the non-destructive testing of circular saw blades based on audio frequency resonance spectrum technology. Background technique [0002] With the development of the tool industry, the market demand and output of various types of circular saw blades continue to expand, but it is impossible for circular saw blade manufacturers to ensure that every circular saw blade produced meets the standard. When working, due to reasons such as poor welding between the saw blade and the saw teeth, cracks inside the saw blade, or broken teeth, etc., the cutting accuracy of the saw blade will be affected in the slightest, and the saw teeth will fly out of the circular saw blade in severe cases, and the saw blade will break. This creates a security risk. But nowadays, most circular saw blade manufacturers at home and abroad lack necessary means such as effective testing equipment and instrum...

AI Technical Summary

Problems solved by technology

[0002] With the development of the tool industry, the market demand and output of various types of circular saw blades continue to expand, but it is impossible for circular saw blade manufacturers to ensure that every circular saw blade produced meets the standard. When working, due to reasons such as poor welding between the saw blade and the saw teeth, cracks inside the saw blade, or broken teeth, etc., the cutting accuracy of the saw blade will be affected in the slightest, and the saw teeth will fly out of the circular saw blade in severe cases, and the saw blade will break. This creates a security risk

But nowadays, most manufacturers of circular saw blades at home and abroad lack necessary means such as effective testing equipment and instruments, and it is difficult to make scientific and effective quality testing of products

At present, the mainstream circular saw blade detection of circular saw blade manufacturers adopts pressure detection, and generally uses stress deformation tools. This method has low efficiency and reliability, and it is also difficult to quantify the detection and processing results, so the factory quality of circular saw blades is very low Difficult to control, poor product consistency, low life

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