Features of Rotary Ultrasonic Machining

The characteristic of rotary ultrasonic machining is that its ultrasonic head rotates with the spindle during operation. A large number of test results show that in the process of machining, the removal effect of simple tool rotation or ultrasonic vibration is relatively poor, but after the combination of the two, the situation has been greatly improved. Compared with traditional ultrasonic machining, rotary ultrasonic machining has the following advantages:

• The machining speed is fast. Ultrasonic rotary machining retains the advantages of traditional ultrasonics, that is, both conductive and non-conductive materials can be processed, and the machining speed can reach more than 100mm/min. The machining speed of ultrasonic rotary machining is 10 times that of traditional machining and 6-10 times that of traditional grinding. times.
• The machining is simple and easy. Ultrasonic vibration reduces the friction coefficient between the tool and the machined surface, the cutting force is small, and the structure of the machine tool is simple.
• Smooth chip removal, drilling machining, no need to retract the tool for chip removal, easy to realize mechanization. The hydraulic impact and rotary motion promote the discharge of debris, and the hydraulic impact and rotary motion formed by the reciprocating impact of the tool keep the debris in a moving state, prevent the deposition process of debris, and promote the flow of debris in the working fluid.

When the tool approaches the workpiece, the old working fluid leaves the machining area with debris, and when the tool leaves the workpiece, the new grinding fluid enters the machining area, thus achieving the dynamic balance of the grinding fluid in the machining area and ensuring the progress of machining.

Features of Rotary Ultrasonic Machining

• High precision machining. For example, CNC ultrasonic drilling is used to process glass holes with a diameter of 1.6mm and a depth of 150mm, and the precision is: roundness 0.005mm, cylindricity 0.02mm.
• The quality of the machined surface is good. Since the machining process does not produce a harmful high temperature area, it will not bring chemical and electrical changes on the surface of the workpiece, and the residual compressive stress generated on the surface of the workpiece can improve the fatigue strength of the machined parts.
• The greater the brittleness of the processed material, the easier it is to be processed; the harder or stronger the material, the greater the toughness, the more difficult it is to process.
• The tool wear is small and the service life is long.

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