Jig for positioning and fixing workpiece

A jig for positioning and fixing a workpiece to a workbench (12), said jig comprising:

• a first clamping member (13) having a screw hole (13b) extending in the vertical direction;
• a second clamping member (14), wherein the second clamping member has an insertion hole (14c) extending in the vertical direction and a male screw portion (14a) screwed into a screw hole (13b) of said first clamping member (13) so as to be capable of adjusting a position, and wherein the second clamping member includes a flange portion (14b) at a periphery of the upper portion thereof;
• a fixing member (B, N), wherein the fixing member pierces said screw hole (13b) of said first clamping member (13) and said insertion hole (14c) of said second clamping member (14) and fixes said first and second clamping members (13, 14) to said workbench (12);
• and
• a fastening member (15), wherein the fastening member determines a position of said workpiece W with respect to said workbench by utilizing said first and second clamping members (13, 14) fixed to said workbench (12) by said fixing member (B, N), and wherein the fastening member fixes said workpiece (W) moved to a space between a clamping face (13d) of said first clamping member (13) and said flange portion (14b) of said second clamping member (14).