Patent ID: 8887394

Claim:
Method for calibrating a sintered molded part with an angular toothing by means of a calibrating tool, comprising a lower punch with a lower punch external toothing, a vertically movable and axially rotatably mounted upper punch with an upper punch external toothing, as well as an axially rotatably mounted die with a die internal toothing, according to which the sintered molded part is placed onto the lower punch and positioned on the latter, then the upper punch is lowered in the direction of the sintered molded part, and in this way the sintered molded part and the lower punch are lowered in the direction of the die, and thereby the angular toothing of the sintered molded part is pressed into the die internal toothing, wherein the lower punch is moved only in vertical direction and the direction of movement of the lower punch is reversed after reaching a lower end position and the calibrated sintered molded part is moved by the vertical movement of the lower punch upwards out of engagement with the die internal toothing of the die, whereby the upper punch also moves upwards by the upward movement of the lower punch, and wherein the die only rotates and is not lowered for demolding the gear.