Abstract: A method for producing a liquid phase sintered aluminum alloy member, includes: a compacting process of compacting a raw material powder containing an aluminum alloy powder containing at least one element selected from Si, Mg, Cu, and Zn, with the balance being Al and unavoidable impurities to form a green compact; a sintering process of subjecting the green compact to liquid phase sintering to give a sintered body; a softening process of subjecting the sintered body to a heat treatment to give a softened material; a straightening process of sizing the softened material to give a straightened material; and an aging process of subjecting the straightened material to a heat treatment to give an aged material in which precipitates are formed.

Abstract: A process for manufacturing connecting rods is provided which comprises the steps of compacting, sintering, and powder forging a powder metal comprising a carbon source and a prealloyed powder consisting essentially of iron and copper. The connecting rods made from this process have sufficient hardness and strength to be used in an engine and do not require any additional quenching or tempering.

Abstract: The disclosure provides a concrete pumping equipment and a bending connecting rod device thereof, and a manufacturing method for the device. The bending connecting rod device comprises a shaft sleeve, at least two composite support plates and cover plates, wherein the at least two composite support plates are provided with holes, the shaft sleeve is embedded in the holes, and the at least two composite support plates are arranged on the shaft sleeve at intervals; and the cover plates are fixedly arranged at the ends of the shaft sleeve. Through the disclosure, the bending connecting rod is formed by thermally pressing and solidifying the composite support plates and the shaft sleeve embedded in the composite support plates, so as to have the characteristics of light weight, and high strength, corrosion resistance and designability.

Abstract: A semi-finished product having a hollow and an expansion diameter portion is manufactured in advance (first step), and a press device for folding an outer cylinder (4) and an inner cylinder (5) around an entire die set (DS) is used, thereby performing drawing with a body of the semi-finished product as the center in a constant temperature atmosphere at any temperature between a room temperature and 870° C. (second step).

Abstract: Exemplary connecting rods and methods of making a connecting rod are disclosed. A method of making a connecting rod may include the step of providing a connecting rod blank, where the connecting rod blank includes a crankshaft end and a piston pin end. The method may further include forming a crankshaft pin recess in the crankshaft end of the connecting rod blank and a piston pin recess in the piston pin end, and forming at least one lubrication recess in the piston pin end of the connecting rod blank. The lubrication recess and the piston pin recess may both formed concurrently.

Abstract: A universal offset connecting rod and method of manufacture of a universal offset connecting rod comprised of an offset connecting rod having an offset longitudinal axis, a first circular aperture used for pivotally attaching the offset connecting rod to a wrist pin, and a second circular aperture used to pivotally attach said offset connecting rod to a crankshaft, and a force transfer area creating an angle of offset which directs the line of action to a point away from the center of said second circular aperture. The force transfer area is a triangular area free from any solid material and defined by the normal line of action on one side and the offset connecting rod on the remaining two sides. The connecting rod is therefore discontinuous along the traditional line of action, resulting in a completely offset of transferred force.

Abstract: A connecting rod and methods for making the same are disclosed. A method of making a connecting rod may include joining a first connecting rod blank and a second connecting rod blank together. The first connecting rod blank includes a first material, while the second connecting rod blank includes a second material different from the first material. The first and second connecting rod blanks have an interface between the piston pin and crankshaft ends. The method further includes narrowing a cross-section of the blanks at the interface, forming a piston pin aperture in the first connecting rod blank, and forming a crankshaft pin aperture in the second connecting rod blank. At least one of the narrowing and forming steps works a perimeter of the interface, thereby forming a generally smooth connecting rod surface about the perimeter of the interface.

Abstract: A hollow structural connecting rod including a first end fitting, a second end fitting, and a hollow main portion situated between the first and second end fittings. First and second connecting rod elements are integrally joined to one another and have, respectively, a first hollow shank made in one piece together with the first end fitting and a second hollow shank made in one piece with the second end fitting, the first and second connecting rod elements being joined by a joint situated at mid-length on the connecting rod, and which can be produced via flow-turning. The connecting rod may find particular application to an assembly system to be interposed between an aircraft engine mounting structure and an engine.

Abstract: A method of manufacturing a connecting rod assembly including the steps of defining a small end of a connecting rod assembly having a terminal end and then defining a pin bore extending through the small end of the connecting rod assembly. A pair of channels is formed on opposite sides of the small end of the connecting rod assembly wherein the axis of each of the channels is substantially perpendicular to the axis of the pin bore. A bushing having a contact surface including at least partially annular grooves disposed thereon is installed into the pin bore of the small end. The connecting rod is then machined to reduce the width of the small end between each channel and the terminal end wherein at least a portion of the grooves are disposed along the distal ends to reduce the need to deburr the area adjacent to the pin bore.

Abstract: A method of manufacturing a connecting rod assembly including the steps of defining a small end of a connecting rod assembly having a terminal end and then defining a pin bore extending through the small end of the connecting rod assembly. A pair of channels is formed on opposite sides of the small end of the connecting rod assembly wherein the axis of each of the channels is substantially perpendicular to the axis of the pin bore. At least partially annular grooves are formed within the pin bore adjacent the distal end of the pin bore. The connecting rod assembly is then machined to reduce the width of the small end between each channel and the terminal end to provide a small end having a reduced width configuration wherein the grooves are disposed along at least a portion of the distal end to reduce the need to deburr the area adjacent the pin bore.

Abstract: A method for manufacturing a connecting rod for an engine contemplates creating a rough connecting rod from high carbon steel. The rough connecting rod is normalized to provide strength and toughness characteristics to the core of the connecting rod for functional operation. A first, second or both ends of the connecting rod are selectively induction hardened to create a durable martensitic structure in those ends. The connecting rod is then cracked and ground to form a final connecting rod for use in internal combustion engines.

Abstract: A method of making a compensation shaft (1) out of a drop-forged shaft blank (11) is provided. The compensation shaft includes a shaft section (5) with a base body (16) and a rib (15) with a height H starting from the base body. The method includes separating the forging ridges (14) formed in the die (9, 10) by trimming the forged shaft blank into a shape close to the final contour of the base body at trimming points, with the distance S2 between these trimming points being substantially smaller than the distance S1 between the forging ridges prior to separation.

Abstract: A method of producing a connecting rod with a bearing, in which both a process for producing a bearing separately from a connecting rod and a process for assembling the bearing to the connecting rod can be eliminated to reduce processes, labor, and costs to produce the connecting rod. A hollow cylindrical molding of a bearing metal material is inserted and fitted, as an inner member, inside an inner surface of a circular large end hole of a large end section of a connecting rod. A tapered surface of a rotary pressing tool is pressed, while rotating, to the hollow cylindrical molding to heat and soften the hollow cylindrical molding, causing the hollow cylindrical molding of the bearing metal material to plastically flow axially and radially outward, whereby a bearing metal layer is directly joined and formed on the inner surface of the large end hole.

Abstract: A highly efficient universal connecting rod and method of manufacture of a highly efficient universal connecting rod comprised of an connecting rod having an offset longitudinal axis, a first circular aperture used for pivotally attaching the connecting rod to a wrist pin, and a second circular aperture used to pivotally attach said connecting rod to a crankshaft, and a force transfer area creating an angle of offset which directs the line of action to a point away from the center of said second circular aperture in the direction of normal crankshaft rotation.

Abstract: According to one embodiment of the invention, a computerized method for designing a progressive die used in the manufacturing of a part formed from sheet metal includes receiving, at a computer, information regarding one or more features of the part, and determining, by the computer, a blank layout for the part based on the features of the part and the number of parts desired. The computer further determines one or more details of a strip for the blank layout, information regarding a die base based on the details of the strip, and information regarding one or more inserts for die plates of the die base based on operations of the processes needed to form the features in the part. The computerized method further includes generating, by the computer, one or more outputs associated with the progressive die.

Abstract: The present invention relates to a connecting rod assembly and method of manufacturing same. The method includes defining a small end of a connecting rod having a terminal end and defining a pin bore extending through the small end. A pair of channels is forged on opposite sides of the small end, such that each of the channels is substantially perpendicular to the pin bore. A bushing having a contact surface including at least partially annular grooves and opposed distal ends is subsequently formed and installed into the pin bore of the small end. Following installation of the bushing, the connecting rod is machined to reduce the width of the small end between each channel and the terminal end to where at least a portion of the grooves are disposed along the distal ends to reduce the need to deburr the area adjacent the pin bore.

Abstract: To manufacture a connecting rod including positioning grooves having a function of positioning a bearing metal at low cost. A big end part of a split type connecting rod is fractured in two after inserting an approximately cylindrical die into a bearing hole. The die has projections corresponding to locking grooves on an outer circumferential surface thereof. The die includes a pair of split dies having tapered faces, each expanding an opening on an edge of an end face of each of the split die halves. The tapered faces are formed by partially notching mating surfaces by pressing the inner circumferential surface of the bearing hole with the projections by a movement of the pair of split dies in a radial direction of the bearing hole.

Abstract: The present invention relates to a method of manufacturing a connecting rod assembly having a stepped small end. The method includes defining a small end of a connecting rod assembly having a terminal end and defining a pin bore extending therethrough. A pair of channels are formed on opposite sides of the small end, perpendicular to the pin bore and a bushing is subsequently installed into the pin bore. Where a connecting rod assembly does not include a bushing the method includes defining a small end having a pin bore and forming pair of channels on opposite sides of the small end. A contact surface is then defined within the pin bore to engage a piston pin and the small end is machined to provide a stepped configuration. The connecting rod assembly is then machined to reduce the width of the small end to provide a stepped configuration.

Abstract: A spline member manufacturing apparatus includes a shaving punch, a shaving die, a spline punch, and a stripper. The stripper supports a first surface of a base plate portion and an outer circumferential surface of a boss portion. The shaving punch is advanced relatively, while a material and the stripper are being pressed so that cutout portions are formed in an outer circumference portion of the base plate portion by the shaving punch and the shaving die. The shaving punch is further advanced relatively while the outer circumferential surface of the base plate portion is held by the shaving die, so that a spline portion is formed by inserting the spline punch along the inner circumferential surface of the boss portion.

Abstract: A symmetrical tie rod arm is disclosed that can be used on either side of a vehicle to eliminate the need for two separate tie rod arms.

Abstract: A common rail for a diesel engine has a main pipe rail with an axial flow passage. Branch holes are made in the main pipe rail and communicate with the axial flow passage. The main pipe rail is worked to decrease stress concentration near the branch holes. The whole inner peripheral surface of the main pipe rail and the branch holes then is subjected to autofrettage processing to generate a compressive residual stress on the entire inner peripheral surface of the main pipe rail and the branch holes for increasing fatigue strength.

Abstract: A non-heat treated connecting rod which comprises, by mass %, C: 0.25-0.35%, Si: 0.50-0.70%, Mn: 0.60-0.90%, P: 0.040-0.070%, S: 0.040-0.130%, Cr: 0.10-0.20%, V: 0.15-0.20%, Ti: 0.15-0.20% and N: 0.002-0.020%, and the balance Fe and impurities, with chemical compositions being less than 0.80 in the value of C+(Si/10)+(Mn/5)+(5Cr/22)+1.65 V?(5S/7) using the symbol of the element as its content, the microstructure of the Big end of the said connecting rod being ferrite-pearlite, all-region hardness of the said big end being 255 to 320 in Vickers hardness, the ferrite-region hardness in the said ferrite-pearlite of the Big end being 250 or more in Vickers hardness and the ratio of the said ferrite-region hardness to the said all-region hardness of the said Big end being 0.80 or more, is excellent in machinability, fracture splitting ability, and fatigue resistance, although no Pb at all is added.

Abstract: A connecting rod with an elliptical opening couples with a crankshaft without the use of a separate bearing element. The elliptical opening deforms under axial tension during operation to provide proper clearance between an inner surface of the opening and an outer surface of the crankshaft. A method for producing a connecting rod with an elliptical opening includes creating an initial form, compressing the crankshaft end of the form with a clamping means, honing a circular opening, releasing the clamping means, and forming radii at each edge of the resulting opening.

Abstract: In a method for producing, from a cast or forged blank, a connecting rod intended for a reciprocating-piston engine and having one little and one big connecting-rod eye, the big connecting-rod eye is split, in a pre-machining step, along a parting plane running through the axis of the eye, the place side faces of the blank being ground beforehand in a first clamping station. After the plane faces of the blank have been ground, first the contour of the big connecting-rod eye and then the split in the parting plane are produced by laser cutting while the blank is held in a second clamping station.

Abstract: A presently-preferred process for manufacturing a connecting rod comprises placing a heated preform suitable for being formed into the connecting rod into a closed forge die, and forging the preform in a first forging operation while the preform is at a forging temperature to form an as-forged connecting rod having vertical flash extending therefrom. The presently-preferred process further comprises placing the as-forged connecting rod in a second forge die while the as-forged connecting rod is at a temperature substantially equal to the forging temperature, and forging the vertical flash in a second forging operation. The presently-preferred process also comprises removing the as-forged connecting rod from the second forge die, and machining the as-forged connecting rod to predetermined dimensions.

Abstract: An improved high performance aluminum connecting rod and a method of manufacturing such a connecting rod which is capable of carrying particularly high compressive loads with a substantially reduced deformation resulting from such high compressive loads in high performance engines. The connecting rod is made of an extruded bar stock forging made of an aluminum alloy material which is forged and machined to make the connecting rod. The connecting rod has a substantially increased compressive yield strength as well as a substantially increased tensile yield strength. This increase in the compressive yield strength of the connecting rod effectively prevents bending of the connecting rod beam, elongation of the wrist pin bore, and a marked deterioration in the roundness of the bearing housing bore.

Abstract: A presently-preferred process for manufacturing a connecting rod comprises placing a heated preform suitable for being formed into the connecting rod into a closed forge die, and forging the preform in a first forging operation while the preform is at a forging temperature to form an as-forged connecting rod having vertical flash extending therefrom. The presently-preferred process further comprises placing the as-forged connecting rod in a second forge die while the as-forged connecting rod is at a temperature substantially equal to the forging temperature, and forging the vertical flash in a second forging operation. The presently-preferred process also comprises removing the as-forged connecting rod from the second forge die, and machining the as-forged connecting rod to predetermined dimensions.

Abstract: A preform for a connecting rod of an engine is manufactured with a good productivity. The preform has a large-end mass portion which corresponds to a large-end portion of the connecting rod, a small-end mass portion which corresponds to a small-end portion thereof, and a shaft portion which corresponds to a rod portion thereof. There is manufactured a preform blank which has a shaft-shaped portion which is formed by extrusion. This shaft-shaped portion is made up of the shaft portion and an extended portion which extends axially forward from the shaft portion. The small-end mass portion is formed by squeezing the extended portion in the axial direction in a plurality of times starting with a portion near the shaft portion.

Abstract: A connecting rod is formed by cold forging in a single pressing cycle at a good accuracy without separately preparing a large-end cap, to thereby reduce the manufacturing cost. A double-action type of forging apparatus is made up of an upper die, a lower die, and a large-end portion punch and a small-end portion punch, both being movably provided in each of the dies. The upper die is closed to the lower die while forging a preform, to thereby roughly form a connecting rod. Then, the large-end portion punch and the small-end portion punch are protruded into a forming space between both the upper and lower dies to forge the parts to be pierced, thereby filling underfilled parts with material. Then, the large-end portion punch and the small-end portion punch on the side of the upper die are pushed out of the forming space to reach the lower die. The underfills left in the parts to be pierced are blanked or punched away to form a large-end hole and a small-end hole.

Abstract: A sintered powder metal (P/M) component has an integrally formed tapered boss surrounding its bolt hole which extends into counterbores in a component to which it is assembled and produces plastic conformance between the boss and the counterbore when the boss is seated in the counterbore. The P/M component can then be removed from the other component and reassembled to it, with the boss fitting perfectly back into the bore with the plastically deformed surfaces fitting back together precisely to determine the relative positioning of the two components. The boss is tapered, a moat may surround it, and the boss may be provided with axial splines and/or be oblong in the axial direction. Bosses such as these may be applied to two components in general, at least one of which is powder metal, such as a main bearing cap, a sensor ring for measuring the timing of an internal combustion engine and a connecting rod bearing cap.

Abstract: A connecting rod includes an apertured connecting-rod eye portion defining two portions (arms), which is split into a saddle portion and a bearing cap portion by a fracture splitting operation along a desired dividing plane whose location is determined by formation of a separating notch on the connecting-rod eye portion which extends parallel to the desired dividing plane. In each of the arm portions, through screw-holes are provided for attaching the bearing cap to the bearing saddle. During the splitting operation, the fracture separation is initiated at the separation notch and progresses in two paths around the screw-hole. To inhibit misalignment of the two fracture paths as they come together, a hole is formed in the plane of the desired dividing plane and extending from the through-hole to a wall of the connecting-rod eye remote from the separating notch.

Abstract: A method including the following successive operations carried out on a tube section: a) swaging one end to form at least two longitudinal strips folded down edge to edge and radially projecting outwards; b) cutting out the external projection of the strips to obtain at least two longitudinally separate tabs; and c) shaping the tabs into wings. The method can be used for making stirrups or fork joints at the end of a tubular part. It can also be used to produce semirigid axles or cradles for motor vehicles.