Method for manufacturing component of pressure sensor

A method for manufacturing a metal component of a pressure sensor, the component comprising

• a first outer cylindrical surface,
• a cylinder upper surface connected to an upper end of the first outer cylindrical surface and positioned inside in a radial direction of the first outer cylindrical surface, and
• a flange upper surface connected to a lower end of the first outer cylindrical surface and positioned outside in the radial direction of the first outer cylindrical surface;
• and
• the method comprising:
• a main body machining step performing a die sinking electrical discharge machining to a metal plate from a front side using an electrode comprising a second inner cylindrical surface and a bottom surface connected to a lower end of the second inner cylindrical surface, and the bottom surface being positioned outside in a radial direction of the second inner cylindrical surface so that the metal plate has the first outer cylindrical surface facing the second inner cylindrical surface and the flange upper surface facing the bottom surface;
• and
• a separating step separating a main body at least including a part corresponding to the first outer cylindrical surface and the flange upper surface from the metal plate using an electrical discharge machining.