In CD, the size and distribution density of surface defects were more severe than UAD. When the ultrasonic vibration was applied, compared with CD, the thrust force in UAD was reduced by 7% to 25.3%. In UAD, the ultrasonic cavitation effect significantly promoted the discharge of fine chips. The results showed that the chips were mainly the continuous helical shape in CD, while the chips in UAD were mainly fan-shaped and finely broken. The influence of processing parameters (spindle speed, feed rate, and amplitude) on the chip shape, chip removal effect, surface quality, and thrust force was studied. Combined with the intersection characteristics of the dynamic trajectory, the chip breaking ability of the cutting edge was analyzed. In this work, UAD micro-hole machining was studied on AISI 4340 steel. Ultrasonic-assisted drilling technology (UAD) is an advanced processing method that combines conventional drilling (CD) and ultrasonic-assisted machining, which can improve the machinability of difficult-to-process materials.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |