Patent ID: 7398584

Claim:
A press fitting tool for press fitting a diametrically and resiliently deformable pin member into aligned holes of works, comprising: a pin diameter reducing device that diametrically reduces at least a leading end of the pin member to a given diameter by applying an external force to the pin member, the given diameter being smaller than that of the aligned holes; and an actuating device that thrusts the pin member in a direction to insert the diametrically reduced leading end of the pin member into an inlet portion of the aligned holes without inducing abutment of the diametrically reduced leading end of the pin member with a peripheral edge of the inlet portion of the aligned holes, wherein the pin diameter reducing device comprises a frusto-conical bore with a stationary inner surface through which the pin member is thrusted in a longitudinal direction such that an outer diameter of the pin member is reduced, the frusto-conical bore having a diametrically larger inlet portion whose diameter is larger than the outer diameter of the pin member in a free condition and a diametrically smaller outlet portion whose diameter is smaller than that of the diametrically larger inlet portion, and wherein the actuating device thrusts the pin member along the longitudinal direction of the frusto-conical bore.