Rotary-impact-type ultrasonic drilling device without free mass block

Abstract

The invention provides a rotary-impact-type ultrasonic drilling device without a free mass block. A sampling drilling tool and a transmission shaft of the rotary-impact-type ultrasonic drilling machine are connected, and the periphery of the transmission shaft is sleeved with a longitudinal-longitudinal torsion composite piezoelectric transducer. A front shell, a rear shell and a rear bearing endcover are connected sequentially. The tail portion of the transmission shaft penetrates out of the rear bearing end cover. A rotor is connected with a loading spring, and the compression amount of theloading spring is adjusted by adjusting the position of a nut on the transmission shaft. The tail end of the longitudinal-longitudinal torsion composite piezoelectric transducer makes contact with the rotor. The tail end of the sampling drilling tool is sleeved with a return spring and a rotary shaft sleeve, the return spring and the rotary shaft sleeve are connected, and the sampling drilling tool penetrates out of the head portion of the front shell. Through the rotary-impact-type ultrasonic drilling device without the free mass block, the problem that ultrasonic drilling machines in the prior art are all provided with free mass blocks, two times of contact collision needs to be completed, and consequently, energy is lost is solved, the free mass block is omitted, collision only needs to be completed once, and thus the energy transmitting efficiency of the ultrasonic drilling machine is improved.

Description

technical field [0001] The invention relates to a rotary impact ultrasonic drill without free mass blocks, which belongs to the field of extraterrestrial celestial body detection and sample collection and testing. Background technique [0002] Deep space exploration is one of the most active scientific fields in recent years. Studying the geological information of extraterrestrial space helps to explore the composition of the solar system and the origin of life. Drilling and sampling is an important way to obtain stellar soil samples in deep space exploration. Compared with drills driven by electromagnetic motors, ultrasonic drills have the advantages of small size, low power consumption and low drilling pressure. According to the movement form of sampling drills, ultrasonic drills can be divided into impact ultrasonic drills and rotary impact drills. Ultrasonic drill. In the percussive ultrasonic drill, the sampling drilling tool only performs impact movement along its axi...

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem that the ultrasonic drills in the prior art are all equipped with free mass blocks, and needs to complete two contact collisions, and there is a certain degree of energy loss, and proposes a rotary impact ultrasonic drill without free mass blocks. Eliminates the free mass block and only needs to complete one collision, which improves the energy transfer efficiency of the ultrasonic drill

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