Riveting machine and method

Machine for riveting parts comprising:

• a piercing tool which has a piercing axis;
• an upper support member, called upper sheet clamp, and a lower support member, called lower sheet clamp, mounted movable relative to each other in a direction of bringing the sheet clamps closer to each other, to enable clamping the parts to be riveted;
• a rivet holding and setting tool, called upper riveting tool;
• a support element, called lower riveting tool, adapted to cooperate with the upper riveting tool to flare a rivet, when the rivet is disposed inside an orifice pierced through the parts to be riveted, between the lower and upper riveting tools;
• the upper sheet clamp having a passage orifice facing which the piercing tool is adapted to be positioned in a piercing position enabling the piercing tool to pierce an area of the parts clamped between the upper sheet clamp and the lower sheet clamp,
• wherein the upper sheet clamp and the lower sheet clamp are mounted movable relative to each other along a direction transverse to the piercing axis, wherein the upper sheet clamp and the lower sheet clamp are programmed to position the passage orifice of the upper sheet clamp facing the area to be pierced of the parts in the piercing position of the upper sheet clamp, and to bring the lower sheet clamp, supporting the parts, in a position offset from an axis of the passage orifice of the upper sheet clamp in the piercing position of the upper sheet clamp.