Ultrasound-assisted high-frequency brazing method and device for microminiature superhard cutter

Abstract

The invention discloses an ultrasound-assisted high-frequency brazing method and device for a microminiature superhard cutter. The welding method comprises the steps that firstly, a cutter head and a cutter handle are accurately clamped, then, a measuring device is started, then, an ultrasonic vibrator is started, high-frequency brazing is conducted under the ultrasonic assistance effect, finally, the whole device is closed, and the welded superhard cutter is taken down. The ultrasonic-assisted brazing device for the microminiature superhard cutter is composed of a clamping device, the measuring device, an ultrasonic-assisted device and a high-frequency brazing device, the cutter handle and the cutter head are accurately clamped through the clamping device, temperature and pressure are measured in real time through the measuring device, the ultrasonic-assisted high-frequency brazing technology is used for improving the brazing quality of the microminiature superhard cutter, the structure is simple, operation is convenient, and the welding performance of the microminiature superhard cutter is greatly improved.

Description

technical field [0001] The present invention relates to a high-quality welding method and device for micro-miniature ultra-hard tools, in particular to a method and device for ultrasonic-assisted high-frequency brazing of cemented carbide handles and super-hard material cutter heads for micro-miniature super-hard tools , belonging to the field of welding. Background technique [0002] Tiny parts are widely used in important national industries such as aviation, aerospace, ships, weapons, and medical equipment. Micro superhard tools have become the main means of processing tiny parts because of their wide range of machinable materials, high material removal rate, and high machining accuracy. At present, due to the high price of superhard materials, the handles of superhard tools are generally made of cemented carbide, while the cutter head is made of superhard materials such as PCD and CBN, and then the cutter head and the handle are welded by welding technology. The welding...

AI Technical Summary

Problems solved by technology

[0003] At present, high-frequency brazing technology has become the main method for welding micro-miniature superhard tools due to its advantages of fast heating speed and low environmental pollution. However, high-frequency brazing is a process of local rapid heating and cooling, which leads to Metal solidification and crystallization are uneven, and defects such as pores and cracks are prone to occur in the welding area, which affects the welding performance of superhard tools, and then affects the performance of subsequent superhard tools

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