To provide a general purpose jig device requring no replacement of an assembling jig device even in a chassis frame different by a car model, improving positioning accuracy, improving workability and production efficiency and capable of coping with a wide range, a control method of a frame assembling jig system using the general purpose jig device and a storage medium.

A freely protruding-retreating truncated cone bar-shaped body (a locating pin) 2 is inserted and arranged in a central hole of a disk body 1 having a horizontal upper surface being a reference surface, a freely rotatable arm part 3 is parallelly provided on an upper surface of the disk body 1, two columnar members 5 and 5 for forming a sandwiching part K are separately arranged at a prescribed distance in bilateral symmetry on both ends of the arm part 3, a rotary mechanism for rotating the arm part 3 is embraced with a rotary shaft concentric with the central hole as the center, a sandwiching width Hw is freely varied and adjusted to a virtual projection plane in the vertical direction to a line for connecting the two columnar members 5 and 5, works different in a width dimension are freely sandwiched between the two columnar members 5 and 5, and can be positioned and held.