One-piece connecting rod and production method thereof

A method for manufacturing a connecting rod (1) by filament winding, said method comprising the following steps:

• providing a mandrel (8);
• making an inner body (5) by;
• manufacturing a first part (6) by winding preimpregnated fibers (17) around said mandrel (8);
• removing the mandrel (8);
• manufacturing a second part (7),
• providing a shoulder (12) in the second part (7);
• assembling the first part (6) with the second part (7, 22);
• making an outer body (14) by winding preimpregnated fibers (17) around said inner body (5), said preimpregnated fibers (17) being identical to those used during the manufacture of the first part (6);
• making a one-piece body (18) by polymerization of the assembly formed by the inner body (5) and the outer body (14);
• machining a fastening element (19) at one end of the one-piece body (18);
• wherein the shoulder (12) serves as a bearing surface that abuts the first part (6) during the assembly of the first part (6) with second part (7);
• and
• wherein a tube (13) is inserted into the second part (7) to form the shoulder (12), said tube (13) being manufactured via the filament winding method using preimpregnated fibers (17) identical to those used for the inner body (5) and the outer body (14).

A method for manufacturing a connecting rod (1) by filament winding said method comprising the following steps:

• providing a mandrel (8);
• making an inner body (5) by;
• manufacturing a first part (6) by winding preimpregnated fibers (17) around said mandrel (8);
• removing the mandrel (8);
• manufacturing a second part (7);
• providing a shoulder (12) in the second part (7);
• assembling the first part (6) with the second part (7, 22);
• making an outer body (14) by winding preimpregnated fibers (17) around said inner body (5), said preimpregnated fibers (17) being identical to those used during the manufacture of the first part (6);
• making a one-piece body (18) by polymerization of the assembly formed by the inner body (5) and the outer body (14);
• machining a fastening element (19) at one end of the one-piece body (18);
• wherein the shoulder (12) serves as a bearing surface that abuts the first part (6) during the assembly of the first part (6) with second part (7);
• wherein a tube (13) is inserted into the second part (7) to form the shoulder (12), said tube (13) being manufactured via the filament winding method using preimpregnated fibers (17) identical to those used for the inner body (5) and the outer body (14);
• and
• wherein the tube (13) is coated with a layer of resin before insertion into the second part (7), said resin being identical to that of the preimpregnated fibers used during the making of the inner (5) and outer (14) bodies.