Patent ID: 8845197
Filing Date: 2014-09-30
Classification: A61B,A61C,F16C,G01L,Y10T

Abstract:
1. A dental machining apparatus comprising: a tool spindle that has an axis of rotation; a bearing housing in which the tool spindle is disposed; a force sensor disposed between the tool spindle and the bearing housing that detects a machining force acting on the tool spindle, the force sensor being in the form of a single circular disk having a first flat face, a second flat face, a plurality of first bracing members regularly distributed on the first flat face, and a plurality of second bracing members regularly distributed on the second flat face; a rotary bearing disposed between the tool spindle and the bearing housing; a holding ring affixed to an end portion of the bearing housing; and a spring that axially biases the force sensor against the holding ring, wherein the number of first bracing members is the same as the number of second bracing members, and wherein sensor elements are disposed on the single circular disk between adjacent first bracing members.