A tilt stand having a mounting surface and holes for mounting a drum are formed
by one normal-feed press working. The holes for mounting the drum are formed by
vertical punching. The respective holes are rectangular holes, each of which has
one side equal to the diameter of a shaft or the diameter of a screw in the direction
of Y. The hole into which the shaft is inserted has the other side in the direction
of X which is determined such that the side is in contact with the shaft inserted
into the hole in the direction perpendicular to the mounting surface at the obverse
surface and the reverse surface of the mounting surface. The drum has a structure
in which the shaft projects from the bottom and is positioned with respect to the
mounting surface by inserting the shaft into the mounting hole. Three screw holes
are formed near the shaft of the drum. The mounting angle of the drum with respect
to the mounting surface is determined by the use of the mounting holes corresponding
to these screw holes. Therefore, this can reduce the number of processes and the
load of a press machine and increases the strength of a base without degrading
the mounting accuracy of the drum and the accuracy of the linearity of a lead.
