Abstract: A drill bit and method for normalizing bone is provided. The drill bit has a non-round drill bit core that is adapted to cut hard bone and to not cut soft bone. The drill bit has a cutting edge which may be positioned within a compression zone of the non-round drill bit core. The rotational speed of the drill bit and the profile of the drill bit core are tuned so that hard bone recovers into a cutting zone defined by the cutting edge while soft bone remains outside of the cutting zone. The insertion torque of the drill bit can be measured to determine when the normalization is adequate.

Abstract: The invention relates to a barless mold closing device for injection molding machines, which absorbs the mold closing and opening forces via a C-shaped machine frame, in which plate bending is minimized by asymmetrical internal die forces and eccentric opening forces and the load on the die guides and in which it is possible to automatically compensate for non-parallelisms at the die parting line. The solution calls for the fixed die mounting plate 2 and/or the end plate 4 to be supported in two horizontal bearing axes 9, 10 and 11, 12 above and below the axis of injection 7. The lower bearing axes 10, 12 are connected to the fixed die mounting plate 2 and/or to the end plate 4 via elastically deformable components 13 in such a way that these components are connected to the elastic deformation of the machine frame 1, so that there is no angular deviation from the vertical position of the mounting surfaces 2.1, 3.1.