A method for producing a transmission shaft (1) comprising a body (2) made from composite and a coupling piece (3) at one end of the body (2), said coupling piece (3) being hollow and having splines (4) on the inner surface thereof, the base (6) of the splines (4) delimiting the perimeter of a circle of diameter D2 and the head (5) of the splines (4) delimiting the perimeter of a circle of diameter D1, characterized in that said method comprises the successive steps of: —providing a mandrel (10) having an expandable part (12) and a non-expandable part (11); —producing the body (2) by winding pre-impregnated fibre filaments around the mandrel (10); —positioning the coupling piece (3) around the body (2) on the expandable part (12) of the mandrel; —expansion of the expandable part (12) of the mandrel (10) in order to fill the base (6) of the splines (4) with the impregnated fibres of the body (2); —curing the body (2) provided with the coupling piece (3).
The present invention relates to a method of manufacturing a connecting rod (1) by filament winding, said method comprising in particular: creating an internal body (5) by manufacturing a first component (6) by winding pre-impregnated fibers (17) around a mandrel (8) and removing the mandrel; manufacturing a second part (7); providing a shoulder (12) in the second part (7); assembling the first component with the second component (7, 22); creating an external body (14) by winding pre-impregnated fibers (17), identical to those used in the manufacture of the first component (6), around said internal body (5); creating a one-piece body (18) by polymerizing the assembly formed of the internal body and of the external body; and machining a fastening (19) at one end of the one-piece body; wherein the one-piece body (18) and the first fastening element (19) are made up of a one and same composite material.
F16C 7/02 - Constructions of connecting-rods with constant length
B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29K 63/00 - Use of epoxy resins as moulding material
B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
The present invention relates to a method for manufacturing a connecting rod including: a) manufacturing an inner body; b) adding one end of the inner body to the end of the reduced outer diameter of each end piece, said end of the inner body resting on the shoulder of the end piece; c) inserting a first portion of a second mandrel in the hollow cylindrical portion of each end piece and placing a driving bit at the free end of a second portion of the second mandrel; d) winding said pre-impregnated fibres onto the outer surface of an assembly consisting of the inner body, the end piece(s) and the second part(s) of the second mandrel(s) which are free of bits, said fibres then forming an outer body; e) after removing the bit(s), polymerising the inner body and the outer body to form a polymerised integral body; f) removing the second mandrel(s) and cutting the polymerised integral body to the required length.
B29C 53/56 - Winding and joining, e.g. winding spirally
B29C 70/32 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
F16C 7/02 - Constructions of connecting-rods with constant length
B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29C 65/00 - Joining of preformed partsApparatus therefor
B29C 70/72 - Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
B29C 70/84 - Moulding material on preformed parts to be joined
B29C 53/58 - Winding and joining, e.g. winding spirally helically
B29C 53/66 - Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis with axially movable winding feed member
B33Y 70/00 - Materials specially adapted for additive manufacturing
B29K 63/00 - Use of epoxy resins as moulding material
B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
12 - Land, air and water vehicles; parts of land vehicles
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Machines and machine tools; Motors and engines (except for land vehicles) and parts of motors and engines; Connecting rods for machines, motors and engines; vehicle engine parts. Motors for land vehicles; Connecting rods for vehicles. Multi-purpose carbon fibres and synthetic resins (semi-finished goods).
5.
Method for manufacturing composite connecting rods
The present invention relates to a method for manufacturing a connecting rod including: a) manufacturing an inner body; b) adding one end of the inner body to the end of the reduced outer diameter of each end piece, said end of the inner body resting on the shoulder of the end piece; (c) inserting a first portion of a second mandrel in the hollow cylindrical portion of each end piece and placing a driving bit at the free end of a second portion of the second mandrel; d) winding said pre-impregnated fibers onto the outer surface of an assembly consisting of the inner body, the end piece(s) and the second part(s) of the second mandrel(s) which are free of bits, said fibers then forming an outer body; e) after removing the bit(s), polymerizing the inner body and the outer body to form a polymerized integral body; f) removing the second mandrel(s) and cutting the polymerized integral body to the required length.
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29C 70/72 - Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
B29C 70/84 - Moulding material on preformed parts to be joined
B29C 53/58 - Winding and joining, e.g. winding spirally helically
B29C 65/00 - Joining of preformed partsApparatus therefor
B29C 70/32 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
F16C 7/02 - Constructions of connecting-rods with constant length
B29C 53/66 - Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis with axially movable winding feed member
B29K 105/06 - Condition, form or state of moulded material containing reinforcements, fillers or inserts
B29K 305/00 - Use of metals, their alloys or their compounds, as reinforcement
B29K 307/00 - Use of elements other than metals as reinforcement
B29K 705/00 - Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
The present invention relates to a method for manufacturing a connecting rod comprising at least the following consecutive steps: a) manufacturing an inner body (18); b) adding one end of the inner body (18) to the end of the reduced outer diameter of each end piece (5), said end of the inner body (18) resting on the shoulder (6) of the end piece; c) inserting a first portion (19a) of a second mandrel (19) in the hollow cylindrical portion (1) of each end piece and placing a driving bit (20) at the free end of a second portion (19b) of the second mandrel (19); d) winding said pre-impregnated fibres (16) onto the outer surface of an assembly consisting of the inner body (18), the end piece(s) (1, 3, 4) and the second part(s) (19b) of the second mandrel(s) (19) which are free of bits (20), said fibres (16) then forming an outer body (21); e) after removing the bit(s) (20), polymerising the inner body (18) and the outer body (21) to form a polymerised integral body (22); f) removing the second mandrel(s) (19) and cutting the polymerised integral body (22) to the required length.
The present invention relates to a method for manufacturing a connecting rod comprising at least the following consecutive steps: a) manufacturing an inner body (18); b) adding one end of the inner body (18) to the end of the reduced outer diameter of each end piece (5), said end of the inner body (18) resting on the shoulder (6) of the end piece; c) inserting a first portion (19a) of a second mandrel (19) in the hollow cylindrical portion (1) of each end piece and placing a driving bit (20) at the free end of a second portion (19b) of the second mandrel (19); d) winding said pre-impregnated fibres (16) onto the outer surface of an assembly consisting of the inner body (18), the end piece(s) (1, 3, 4) and the second part(s) (19b) of the second mandrel(s) (19) which are free of bits (20), said fibres (16) then forming an outer body (21); e) after removing the bit(s) (20), polymerising the inner body (18) and the outer body (21) to form a polymerised integral body (22); f) removing the second mandrel(s) (19) and cutting the polymerised integral body (22) to the required length.
