CNC MACHINE CALIBRATION

摘要

A method for calibrating a computer numerical control (CNC) machine for milling an implant abutment includes creating a calibration part by milling reference surfaces with predetermined coordinates into a blank stock held by a CNC fixture. By measuring the milled reference surfaces of the calibration part and comparing the measurements to the predetermined coordinates, the CNC fixture can be accurately placed in a global coordinate system, thereby allowing for the derivation of shifts in an abutment geometry in each of the x, y, and z axes in order to align a fabricated abutment relative to the CNC fixture. The shifts may then be used to adjust a control of the CNC machine to match a present state of the CNC machine and the CNC fixture.

主权项

1. A method for calibrating a computer numerical control (CNC) machine comprising:
obtaining a design of an implant abutment having an implant interface, the implant abutment including an abutment geometry; creating a calibration part for the CNC machine by milling a plurality of reference surfaces into a blank stock held by a CNC fixture, the plurality of reference surfaces including surfaces corresponding to each of an x, y, and z axis with predetermined coordinates, wherein the milling includes leaving unmilled areas of the calibration part; measuring the plurality of reference surfaces relative to the unmilled areas of the calibration part; determining a shift in the abutment geometry in each of the x, y, and z axes by comparing measurements obtained from the calibration part to the predetermined coordinates; and adjusting a control of the CNC machine according to the shift in the abutment geometry to match a present state of the CNC machine and the CNC fixture.