Study On Mechanism And Surface Integrity In Ultrasonic Vibration Milling Of Ferrite Magneitc Materials

With the development of new technology and new areas, the ferrite magneticmaterials have been applied more and more widely. The ferrite magnetic material is atypical kind of hard brittle material that is difficult to process. Ordinary grinding methodis difficult to ensure high surface quality and high machining accuracy on the premise ofhigh efficiency. But ultrasonic vibration milling machining method has potentialadvantages of obtaining high surface quality and machining precision under thecondition of efficient processing. This paper studied the critical condition of brittleplastic transition, the entry side damage caused by processing conditions, and theinfluence of the processing surface roughness of ultrasonic vibration milling machiningferrite, in order to provide the basic technical support for the high efficiency and lowdamage precision processing of ferrite magnetic materials.To study the critical condition of brittle plastic transition of ferrite magneticmaterials under the action of mechanical-ultrasonic compound energy field, this paperconducted the single particle ultrasonic vibration cutting and deep scratch test, on thebasis of the removal mechanism research on hard brittle material, and detected andanalyzed the scratch surface morphology. According to the measurement results of thecritical score force and the critical score depth, we studied the influence of amplitude oncritical load and critical cutting depth of ultrasonic vibration milling machining ferrite.For the research of entry side damage phenomenon on ultrasonic vibration millingmachining ferrite, this paper introduced the evaluation method of side damage volume,and also conducted the orthogonal test and single factor experiment of entry sidedamage injury of the ultrasonic vibration milling machining ferrite, and analyzed theinfluence degree and influence laws of processing parameters on the entry side damageinjury, and obtained the optimizing processing parameters of reducing the processingentry side damage injury, through related process test verification.This paper performed the surface roughness test of ultrasonic vibration millingmachining ferrite, and studied the effect degree, primary and secondary relations and theinfluence laws of machining parameters on the bottom and side surface roughness. Weestablished the prediction model of surface roughness of ultrasonic vibration millingmachining ferrite magnetic material, and provided the basic theory of achieving highefficiency and low surface roughness processing optimization of process parameters ofthis material.