Abstract: An electric tool featuring quick assembly and assembly locking includes a base body and a tool body detachably connected to the base body, where a drive shaft connected to a motor is provided in a housing of the base body; a spline tooth movable along the drive shaft is sleeved on an end of the drive shaft; a rotation limit structure is provided between the drive shaft and the spline tooth; an end of the tool body is provided with a connecting sleeve; and a spline hole matched with the spline tooth is provided in the connecting sleeve. The electric tool achieves quick assembly and locking between the base body and the tool body, facilitating quick replacement of different tool heads according to work requirements and ensuring assembly reliability and operational safety.

Abstract: An electric tool featuring quick assembly and assembly locking includes a base body and a tool body detachably connected to the base body, where a drive shaft connected to a motor is provided in a housing of the base body; a spline tooth movable along the drive shaft is sleeved on an end of the drive shaft; a rotation limit structure is provided between the drive shaft and the spline tooth; an end of the tool body is provided with a connecting sleeve; and a spline hole matched with the spline tooth is provided in the connecting sleeve. The electric tool achieves quick assembly and locking between the base body and the tool body, facilitating quick replacement of different tool heads according to work requirements and ensuring assembly reliability and operational safety.

Abstract: A ceramic substrate includes: (a) 10 to 70 wt % of silicon carbide; (b) 6 to 60 wt % of aluminum oxide; (c) 5 to 45 wt % of silicon dioxide; and (d) 0 to 15 wt %, excluding 0, of glass powder. Each component is provided as a raw material. A weight percentage of each component is based on a mass percentage of each component.