Longitudinal-torsional composite ultrasonic vibration drilling device

Through the longitudinal torsion composite ultrasonic vibration drilling device, the longitudinal torsion composite vibration of the twist drill is achieved by using the longitudinal torsion composite vibration mechanism, which solves the problems of processing quality and chip breaking difficulties in existing drilling devices, and improves the processing accuracy and chip breaking effect.

CN110756858BActive Publication Date: 2025-08-15CHINA TOBACCO HENAN IND CO LTD
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Patent Information

Application Number
CN201911203020.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-11-29
Publication Date
2025-08-15
Estimated Expiration
2039-11-29

AI Technical Summary

Technical Problem

The existing drilling devices have defects in processing quality, coaxiality, dimensional deviation, drilling force, temperature and tool life, especially when processing viscous materials, and the existing longitudinal or torsional vibration drilling effect is not good.

Method used

The longitudinal torsion composite ultrasonic vibration drilling device is adopted, and the longitudinal vibration oblique angle is transmitted into the flange through the longitudinal torsion composite vibration mechanism to realize the longitudinal torsion composite vibration of the twist drill, and the vibration signal is transmitted and decomposed by the amplitude rod and the piezoelectric ceramic sheet.

Benefits of technology

It significantly improves processing accuracy and quality, reduces drilling force and heat, improves chip breaking effect, and has significant processing effect on difficult-to-process materials.

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Abstract

The present invention discloses a longitudinal-torsional composite ultrasonic vibration drilling device, comprising a turning device equipped with a longitudinal-torsional composite vibration mechanism. The longitudinal-torsional composite vibration mechanism comprises a flange, a Morse taper, a horn, and a piezoelectric ceramic disc. The flange is coaxially mounted on the Morse taper. An elastic collet is mounted on the shank end of the Morse taper. A locking nut is mounted on the elastic collet. A twist drill is plugged into and connected to the elastic collet and secured to the elastic collet via the locking nut. The horn comprises at least three horns, which are evenly distributed on the flange and located on the same side as the taper end of the Morse taper. The piezoelectric ceramic disc is mounted on each horn. The present invention transmits longitudinal vibration at an oblique angle to the flange through the longitudinal-torsional composite vibration mechanism and converges the longitudinal vibration at that angle, thereby achieving longitudinal-torsional composite vibration drilling with the twist drill.
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