Disclosed are an electrodeless variable angle sideways drill grinding head and drive components thereof. The electrodeless variable angle sideways drill grinding head comprises a knife tube assembly and a grinding head (1) installed at the front end of the knife tube assembly, wherein the grinding head (1) can be driven in a pitching motion and by autorotation. The rear end of the grinding head (1) is hinged to the inner knife tube (11) in a circumferential-direction transmission mode, and the inner knife tube (11) is at least located at a position where the front end thereof is provided for being hinged to the rear end of the grinding head (1) and a flexible transmission segment (13) capable of transmitting torque. The drill grinding head achieves the transmission and pitching motion between the inner knife tube (11) and the grinding head (1) by using a hinge structure, wherein the flexible drive structure is used to compensate the axis deviation resulting from the pitching motion and transmission drive, thus making the drive structure simple, the drive chain short and being conducive to the stable control. The drill grinding head can make pitching and circumferential positional adjustments to the grinding head (1) in order to achieve direction and orientation adjustments on grinding head (1), and this has better a adaptability and accuracy for the surgical site, thereby improving the efficiency of surgery.La présente invention concerne une tête de meulage à foret latéral à angle variable sans électrode et des composants d'entraînement associés. La tête de meulage à foret latéral à angle variable sans électrode comprend un ensemble tube tranchant et une tête de meulage (1) installée au niveau de l'extrémité avant de l'ensemble tube tranchant, la tête de meulage (1) pouvant être entraînée dans un mouvement de tangage par auto-rotation. L'extrémité arrière de la tête de meulage (1) est reliée par charnière au tube tranchant interne (11) selon un mode transmission de
