This paper presents comprehensive research on the design of a forming vertical spindle head (VSH) for wide-universal drilling-milling-boring machines. 3D modeling of the main units of the spindle head in the Creo Parametric CAD environment, including rendering and explore tool view of its parts was performed. The ideas and tooling of the Creo system regarding a simplified representation of the VSH main components design in the form of a skeleton model with subsequent representation in a solid 3D version were used. An alternative version of the modified design of a globoid-bevel gear with intersecting axes as the main drive gear to the head spindle unit is proposed. The main idea of the modification is associated with an innovative transmission “globoid-bevel gear”, which provides an extended range of gear ratios. A method for calculating the modified transmission's main design and kinematic parameters is proposed. An experimental study of the globoid-bevel transmission is conducted at various values of the calculated coefficient of the reference diameter. Numerical values of the calculated coefficient in the range of which the reliability of the VSH operation increases and its values at which the material consumption of the transmission is minimized are found. The results obtained reflect the main goal of the study - increasing the load capacity and durability of the vertical spindle head.