Method for machining a high pressure fuel accumulator, high pressure fuel accumulator and connector branches for using said method

A method for producing a common rail for a common rail fuel injection system of an internal combustion engine, the common rail having a base body (1;

• 21) which is equipped with a plurality of connection openings (2;
• 22), the method comprising the step of deforming the base body in the region of the connection openings (2;
• 22), further comprising providing a rigid internal tube (28) in the base body, the internal tube having an outer contour which corresponds to the desired inner contour of the base body (21), in the region of the connection openings (22), and deforming the base body (21), in the region of the connection openings (22) from outside plastically inward with a tool (24, 25).

A common rail for a common rail fluid injection system of an internal combustion engine, comprising

• a generally tubular base body,
• a plurality of connection openings extending through the wall of said tubular base body, each said connecting opening including a through bore having a circular cross section and each having segments of two different internal diameters, a connection stub for each connection opening, each connection stub being assembled to the tubular base body by being inserted into a connection opening, and in the assembly process being brought to a final, assembled position, each connection stub including means which elastically deforms the material of the tubular base body as it is inserted into a connection opening and brought to its final position on the tubular base body.