STRENGTH TESTING METHOD OF DIAMOND TEETH AND DEVICE USED FOR ITS IMPLEMENTATION Russian patent published in 2012 - IPC G01N3/12 

FIELD: machine building.

SUBSTANCE: pair of teeth is chosen from batch of teeth. Teeth are heated up to soldering temperature at their erection in the housing of drilling diamond bit. Teeth are installed in the mandrel so that they are engaged with working surfaces; at that, contact surface area is normalised with mandrel geometry. Mandrel with teeth is arranged on the loading device equipped with loading value sensor. Teeth are compressed at fixed loading rate till working edge at least of one tooth is destructed and strength of diamond teeth is evaluated as per value of destructive load determined as per readings of loading value sensor. Device consists of mandrel with holes for installation of a pair of diamond teeth, loading device with loading value sensor with spherical support, which is equipped with peak detector. Holes are located in the mandrel so that the possibility of installation of teeth with fixed contact surface area of working edges can be provided. Mandrel is equipped with magnetic support, and height of mandrel is chosen so that one of the inserted teeth can protrude above the mandrel surface.

EFFECT: possibility of quick and objective assessment of strength of working surface of diamond teeth supplied to the assembly.

2 cl, 3 dwg