Engine bit

Abstract

The embodiment of the invention discloses an engine bit, which comprises a movement holder, a driving device, a drill point, a locating sleeve, a locking shaft, a spring and a camshaft, wherein the movement holder is arranged on the engine body of the engine bit; a movement is arranged in the movement holder; the driving device is arranged in the movement; the drill point can be detachably arranged on the driving device and coaxially rotates with the driving device; the locating sleeve is arranged on the movement holder and is provided with a mounting hole; the mounting hole is a stepped hole; the locking shaft is arranged in the mounting hole and is circumferentially located; the front end of the locking shaft is provided with a connecting end which can be embedded into the driving device; and the locking shaft is a stepped shaft; the spring is arranged between the locating sleeve and the locking shaft and is respectively abutted and located with the locating sleeve and the locking shaft; and the camshaft is arranged on the engine body, can rotate around the self axis and is contacted with the end surface of the rear end of the locking shaft. The engine bit provided by the embodiment of the invention is convenient to disassemble and assemble the drill point.

Description

technical field [0001] The invention relates to the technical field of denture processing machinery, in particular to a dental drill. Background technique [0002] Tooth loss is a common human disease. In addition to tooth loss, tooth deformity is also a problem that cannot be ignored. With the improvement of living conditions, people pay more and more attention to dental health, and at the same time have higher requirements for the beauty of dental restorations. , Denture restoration is the only way to solve these problems at present. [0003] With the development of material technology, a series of advantages of bioceramics have been rapidly developed in the field of oral restoration. Dentures made of pure ceramic materials are far superior to traditional metals in terms of performance, biocompatibility, service life and visual appearance. Alloy materials and all-ceramic restoration of dentures are identified as the main direction of future development in the field of den...

AI Technical Summary

Problems solved by technology

[0004] However, the all-ceramic restoration of dentures can only be automatically processed by CAD / CAM technology. The dental drill is the most important tool in the entire denture restoration process. The drill set at its end is used to grind and shape the bioceramic. In the denture processing system, the drill is used for grinding bioceramics, while the dental drill is an elbow dental drill, which requires a special wrench to disassemble the drill needle, which is inconvenient to disassemble.

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