The present invention relates to a dental handpiece, and in particular, the vibration is generated while mechanically linearly rotating the motor so that vibration is generated, and heat is not generated. It relates to a dental handpiece that is not stopped even when applied, and thus has excellent reliability. Dental handpiece (1000) of the present invention is installed to allow the cam to reciprocate in the axial direction by the operation of the driving unit, as well as selectively fastening the blade for tooth extraction to the cap fastened to one end of the upper case. The means 1700 includes a cap 1710 fastened to one end of the upper case 1100, a first bearing 1720 installed in a lower case fitted to the other end of the upper case to guide the blade, and a lower case The connecting shaft member 1730 fitted into the shaft center of the shaft, the cam cover 1740 fastened to the side of the driving unit and fitted at the other end of the lower case, and the spring 1750 assembled in the shaft center direction of the cam cover at the driving unit, and the spring The cam shaft (1760) fixed to the connecting shaft member protruding from the end of the cam cover toward the first bearing while being reciprocated in the axis center direction by being inserted into the axis center of the In addition to being assembled to the motor rotating shaft 1510 of the driving unit, the cam 1770 is arranged at the shaft center of the driving unit side of the cam cover to contact the cam shaft during synchronous rotation with the motor rotating shaft to press the cam shaft to the shaft center.본 발명은 덴탈용 핸드피스에 관한 것으로, 특히 진동이 모터의 회전을 기구적으로 직선운동을 하면서 진동이 발생하도록 하여 열이 발생하지 않을 뿐만 아니라, 오동작이 발생하지 않는 한편, 치아의 환부에 힘을 가해도 정지되지 않아서 신뢰성이 우수하도록 된 덴탈용 핸드피스에 관한 것이다.본 발명 덴탈용 핸드피스(1000)는, 상부케이스의 일단으로 체결되는 캡에 치아를 발치하기 위한 칼날을 선택적으로 끼워서 체결함과 더불어 구동부의 동작에 의해 축방향으로 캠이 왕복이동할 수 있도록 설치된 발치수단(1700)은, 상기 상부케이스(1100)의 일단으로 체결된 캡(1710)과, 상부케이스의 타단으로 끼워져 칼날을 안내할 수 있도록 설치된 하부케이스에 설치된 제1베어링(1720)과, 하부케이스의 축중심으로 끼
