A Bearing Powered Ultrasonic Hand Drill
A hand drill and ultrasonic technology, applied in portable drilling rigs, fluids using vibration, drilling/drilling equipment, etc., can solve the complex structure of slip rings or loosely coupled transformers, difficulty in meeting the requirements of industrial field use, and the limitation of rotation speed, etc. problem, to achieve the effect of simple and reliable structure, simple installation, and small amplitude suppression
Active Publication Date: 2019-07-26
BEIHANG UNIV
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Problems solved by technology
[0006] (1) Slip rings or loosely coupled transformers have complex structures and require high installation requirements;
[0007] (2) Poor impact resistance, easy to damage and failure, difficult to meet the use requirements of industrial sites;
[0008] (3) The conductive slip ring power supply in the contact power supply has restrictions on the rotation speed, and the cost of the slip ring is high
Method used
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Embodiment
[0061] The present invention is a contact type rotary ultrasonic power supply device, a preferred example is figure 1 shown. The ultrasonic hand drill is mainly composed of an ultrasonic vibration transducer and a power supply part. The ultrasonic transducer 12 is the main part of ultrasonic machining, and the positive and negative electrodes of the power supply part are both powered by needle bearings.
[0062] The horn 121 of the transducer has a stepped structure 1213 on the horn shaft, which can position the insulating sleeve 6 of the inner ring. The insulating sleeve 6 of the inner ring is installed on the small end 1212 of the horn of the transducer, and the inner ring of the positive needle roller bearing 7 Installed outside the inner ring insulating sleeve 6. The inner ring of the negative needle roller bearing 3 is installed on the small end 1212 of the horn of the transducer, and the circlip 2 for the shaft is stuck in the groove 1211 of the horn. The inner ring p...
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The invention discloses a bearing powered ultrasonic hand drill which comprises an ultrasonic vibration transducer, a power supply part, a front end cover, a bearing sleeve, an outer sleeve, a threaded connection sleeve, a hand drill front end fixed part and a hand drill front end rotating part. The bearing powered ultrasonic hand drill is subjected to rotating power supply through needle roller bearings, and is simple and reliable in structure, simple to mount, easy to realize and convenient to maintain; the bearing shock resistance is superior to that by conduction slip ring power supply andnon-contact type induction power supply, and the reliability is high; the rotating precision of the rotating part of an ultrasonic machining system can be improved by the needle roller bearings, anddynamic balance of the rotating part is not damaged; and with the adoption of the bearing powered ultrasonic hand drill, the influence on the structure of an amplitude transformer of the ultrasonic vibration transducer is little, the inhibition to the ultrasonic vibration amplitude is little and energy loss is lowered.
Description
technical field [0001] The invention relates to an ultrasonic hand drill, in particular to an ultrasonic hand drill powered by a bearing, and belongs to the technical field of ultrasonic processing. Background technique [0002] Ultrasonic vibration hand drill applies ultrasonic micro-vibration to the tool during the cutting process to achieve intermittent cutting, which is beneficial to the discharge of chips, can significantly reduce cutting force and cutting temperature, and improve tool life and processing quality. [0003] The power supply mode of the ultrasonic hand drill vibration system is divided into contact power supply and non-contact power supply. Contact power supply mostly adopts the power supply mode of conductive slip ring. The disadvantages of using conductive slip rings are: slip rings and carbon brushes are severely worn, and generally need to be replaced regularly; in order to protect the carbon brushes, there are many restrictions on the rotation speed...
Claims
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IPC IPC(8): B23B45/00B06B1/02B06B3/00
CPCB06B1/02B06B3/00B23B45/00B23B45/003
Inventor 姜兴刚朱咸斌张德远
Owner BEIHANG UNIV