To use the material which passes the deformation reform process process of the said material

摘要

PROBLEM TO BE SOLVED: To reduce the manpower required for production/assembly/inspection of a part by reducing the number of parts by normal-drawing a thin sheet material previously as intermediate working, then reverse-drawing the material continuously, thereby integrally producing a complicatedly shaped container therefrom. SOLUTION: The thin sheet material 17 is formed to a two stepped cylindrical topped formed material 24 consisting of a wall 20/shoulder 21 at a first step and a wall 22/ceiling 23 at a second step. Part of the cylindrical wall 20 at the first step is pressed by a die to a flat face 25, a horizontal hole 27 is blanked to the flat face 25. The horizontal hole 27 is used for a connecting hole between a mounting seat of a sintered metal formed part and an fluid outlet/inlet formed part, a top part consisting of the wall 22 and the ceiling 23 at the second step is protruded toward an inner face by subjecting to reverse drawing in the opposite direction, an inner face protruding formed material 34 having the protruded part consisting of an annular edge part 29, a wall at the first step, a step 31, a wall 32 at the second step and a bottom 33 are formed. Successively, a wall 35, a step 36, a wall 37 and a bottom 38 are shaped by two step reverse drawing, a formed material 39 having shape protruded part is obtained.