1. Preface

Ultrasonic wave is applied to the grinding and polishing of diamond and synthetic diamond drawing dies. This new technology has been widely used at home and abroad. The processing speed and product quality of ultrasonic wave grinding and polishing have been greatly improved.
UPM-250 oil return type ultrasonic grinding machine is used for repairing and polishing diamond and synthetic diamond drawing dies in the range of 0.3 to 8.0 mm.
The major improvement of the machine is: there is an automatic swing mechanism of the turntable, and the power output of the generator is improved by using transistors. The design of ultrasonic transducer is improved. Direct air cooling, upgrading on the basis of ordinary oil pressure, patented products, solve the oil leakage problem of oil cylinder working for a long time, better ensure the stability of oil pressure, improve the production environment.

2. Technical parameters

1. Input power: AC220 V, 50 Hz
2. Working frequency: About 20KHz
3. Power consumption: ≤ 350W
4. Transducer: piezoelectric, air cooled
5. Pressurization mode: hydraulic transmission, Zhu code pressurization
6. Working speed: About 123 rpm
7. Working swing speed: about 30 turns / min
8. Working swing angle: ≤ 12 °

3. Working principle and equipment composition

1. This machine uses ultrasonic high-speed vibration to produce impact on the machined surface through steel needle and die material, grinding the machined surface to achieve the required shape and size.
2. The equipment is mainly composed of ultrasonic generator, transducer and base.
(1) ultrasonic generator
The ultrasonic generator is installed in a small cabinet, which is an ultrasonic power supply. The frequency automatic tracking circuit is used to achieve the best ultrasonic output and vibration effect.
(2) transducer
The transducer is a high-efficiency piezoelectric ceramic transducer, which can convert the ultrasonic wave into a stable ultrasonic vibration and is air-cooled.
(3) Stand
The machine base has a rotatable and swinging mold base, which is installed on a cross carriage, and moves up and down flexibly through hydraulic transmission and compression. The cross carriage can be freely aligned with the center, and there is a carriage that can move up and down on the back column, and the transducer is installed on this carriage.

4. Installation and use

1. Installation
Place the base on a stable table, move the transducer up and down, adjust it to a proper position and lock it. Connect the ultrasonic generator with the transducer with the output circuit provided at random, and then connect the transducer with the transducer Insert the power plug into the power output socket of the ultrasonic generator, inject 10 ᦇ oil into the oil cup, and after checking, insert the power plug of the ultrasonic generator into the power socket with reliable grounding when the switches are off.
2. Use
According to the size of the processing die, select the appropriate horn and steel needle, connect the steel needle firmly to the horn with special root or copper welding, grind the appropriate angle on the grinding wheel, install it on the transducer and tighten it, put the die on the die base, adjust the cross carriage and the upper and lower carriage of the transducer, make the steel needle insert into the die hole, and adjust the rank code pressure, Then put in the mold material, turn on the ultrasonic power switch and the mold base rotary switch, if necessary, turn on the mold base swing switch, adjust the ultrasonic output power knob to the appropriate size, and then it can be seen that the mold material is stirred under the ultrasonic, that is, the mold processing is in progress.

Note: if necessary, adjust the frequency fine-tuning to optimize the power output.

5. Equipment composition list and parts