Workpiece fastening device for pressing plurality of locations of workpiece

A workpiece fastening device comprising

• a table on which a workpiece is placed, said workpiece having notched parts which extend along a portion in a height direction thereof,
• an arm which can move so as to press said workpiece which is placed on said table against said table, and
• a drive part which drives said arm, wherein
• said arm comprises a connection member which is connected to said drive part, and a rotary member which is attached to said connection member to be able to rotate about a rotation axis which extends in a direction intersecting with a movement direction of said arm, and
• said rotary member comprises a first pressing part and second pressing part which are arranged at the opposite sides of said rotation axis, each of said first pressing part and second pressing part sticks out in a direction of said rotation axis and has a dimension and shape corresponding to each of said notched parts, and
• said first pressing part and second pressing part presse said notched parts of said workpiece which is placed on said table against said table by each of said first pressing part and second pressing part.