Handheld ultrasonic drilling machine

Abstract

The invention belongs to the field of exploration tools and discloses a handheld ultrasonic drilling machine. A rotary shaft of a motor is connected with an output shaft through a shaft coupler; a conducting sliding ring is fixed on the output shaft; an end face of the conducting sliding ring is in electric contact and sliding connection with a carbon brush; the tail end of the output shaft is connected with a flange disc on an ultrasonic transducer; a control switch is used for controlling a rotary speed of the motor and the frequency of the ultrasonic transducer. According to the handheld ultrasonic drilling machine disclosed by the invention, drilling and sampling are carried out by adopting a manner of combining high-frequency (20000Hz or more) vibration with rotation, and a high-frequency vibration force generated by the ultrasonic transducer acts on a drilling bit so that the drilling bit is drilled into a stratum in a cutting, shearing and breaking manner; meanwhile, the vibration frequency of the transducer is close to inherent frequency of rocks to realize resonance drilling. The handheld ultrasonic drilling machine can be used for obtaining a relatively high mechanical drilling speed under relatively small drilling pressure and the drilling efficiency in hard rocks can be extremely improved, so that the labor intensity of workers is reduced and the working cost is reduced.

Description

technical field [0001] The invention belongs to the field of exploration tools, in particular to a hand-held ultrasonic drill. Background technique [0002] Hand-held drilling rig is a small and portable sampling drilling equipment suitable for inconvenient areas such as mountains, transportation and energy. Sampling with this drilling rig can replace traditional sampling methods such as manual excavation, trench exploration and well exploration, and has been widely used for its advantages of simple operation, convenience, high efficiency, and less vegetation damage. [0003] Ultrasonic assisted processing technology is a very effective special processing method used in the industrial field, especially suitable for processing various hard and brittle materials such as glass, ceramics, quartz, diamond, silicon, etc., and has been widely used. The ultrasonic-assisted processing technology formed by combining ultrasonic processing with traditional cutting processing can effect...

AI Technical Summary

Problems solved by technology

[0005] 1. In the process of conventional drilling, when drilling in medium and hard rock formations, it is necessary to provide a large bit pressure, and the operator needs to press the hand-held drilling rig vigorously. It is difficult to apply the required pressure manually, and the work efficiency is low;

[0006] 2. In the process of conventional drilling, it is often accompanied by problems such as drilling inclination, which has a great impact on the quality of the core and affects the original shape of the rock sample;

[0007] 3. During the conventional drilling process, due to the high wear resistance of the rock, the drill bit wears quickly, resulting in a high drilling cost

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