WO2006059595A1 - 軸受付きコネクティングロッドの製造方法及び軸受付きコネクティングロッド - Google Patents
軸受付きコネクティングロッドの製造方法及び軸受付きコネクティングロッド Download PDFInfo
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- WO2006059595A1 WO2006059595A1 PCT/JP2005/021874 JP2005021874W WO2006059595A1 WO 2006059595 A1 WO2006059595 A1 WO 2006059595A1 JP 2005021874 W JP2005021874 W JP 2005021874W WO 2006059595 A1 WO2006059595 A1 WO 2006059595A1
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- WIPO (PCT)
- Prior art keywords
- connecting rod
- bearing
- bearing metal
- metal layer
- molded body
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/063—Friction heat forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1225—Particular aspects of welding with a non-consumable tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
- B23K20/1295—Welding studs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
- F16C9/04—Connecting-rod bearings; Attachments thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J7/00—Piston-rods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/16—Composite materials, e.g. fibre reinforced
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/04—Connecting rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/022—Sliding-contact bearings for exclusively rotary movement for radial load only with a pair of essentially semicircular bearing sleeves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/10—Force connections, e.g. clamping
- F16C2226/12—Force connections, e.g. clamping by press-fit, e.g. plug-in
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/22—Internal combustion engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49288—Connecting rod making
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49288—Connecting rod making
- Y10T29/4929—Connecting rod making including metallurgical bonding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49288—Connecting rod making
- Y10T29/49291—Connecting rod making including metal forging or die shaping
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2142—Pitmans and connecting rods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2142—Pitmans and connecting rods
- Y10T74/216—Bearings, adjustable
Definitions
- the present invention relates to a manufacturing method of a connecting rod with a bearing and a connecting rod with a bearing.
- a connecting rod for connecting a piston and a crankshaft of a vehicle engine has a configuration having a large end portion on the crankshaft side, a small end portion on the piston side, and a rod portion therebetween.
- the small end circular fitting hole (small end hole) is rotatably fitted to the piston pin, and the large end fitting hole (large end hole) is rotatably fitted to the crank pin.
- a connecting rod bearing (bearing) having a cylindrical shape as a whole is incorporated in the inner surface of each of the fitting holes at the large end and the small end, and each connecting rod is applied via a powerful connecting rod bearing.
- the inner surface of the fitting hole is rotatably fitted and joined to the crank pin and piston pin.
- the connecting rod bearing is manufactured separately from the connecting rod in advance and assembled to the inner surface of each fitting hole, and then the connecting rod bearing is connected to the large connecting rod. The end and small end were connected to the crank pin and piston pin.
- this connecting rod bearing is constructed by joining a bearing metal (alloy) about 0.3 mm thick on a thin plate of about 1.5 mm thick polished steel called a back metal.
- bearing metal fabrication (2) Thin plate, (3) Cladding of back metal and bearing metal, (4) Machining and complicated processes are required, and it takes a lot of labor and time to manufacture.
- high accuracy was required when the connecting rod bearing was threaded onto the connecting rod, and it was necessary to handle it with care.
- bearing metal material is coated on the inner surface of the fitting hole by thermal spraying and a bearing metal layer (bearing) is formed on the inner surface of the fitting hole.
- a bearing metal layer (bearing)
- Patent Document 1 discloses an invention about a sliding bearing structure, in which a connecting rod bearing is composed of a back metal and a bearing metal, and in order to suppress fretting wear and the like of the connecting rod bearing. Further, it is disclosed that the hardness is increased by applying shot peening or the like to the outer peripheral surface of the back metal.
- connecting rod bearing is manufactured separately from the connecting rod in advance and is assembled to the connecting rod.
- Patent Document 2 discloses an invention relating to a manufacturing method of a connecting rod with a bearing, in which a ring-shaped bearing metal is fitted in a fitting hole of a cap-integrated connecting lot molded body.
- a technique is disclosed in which the bearing metal is infiltrated into the fitting hole by sintering in a heated state, and then the cap part is cut off.
- the ring-shaped bearing metal is manufactured separately from the connecting lot in advance, and then assembled and connected to the fitting hole of the connecting rod. Is different.
- Patent Document 1 Japanese Patent Laid-Open No. 9 222117
- Patent Document 2 JP-A-9-137202
- the present invention can eliminate the process of manufacturing the bearing separately from the connecting rod and the process of assembling the connecting rod, and the process and labor of manufacturing the connecting rod with a bearing.
- a manufacturing method of a connecting rod with a bearing and a connecting rod with a bearing that can reduce costs and solve the above-mentioned problems caused by the bearing being separate from the connecting port. It was made for the purpose.
- claim 1 relates to a method of manufacturing a connecting rod with a bearing, wherein a bearing metal material is provided on the inner side of the large end and z or small end circular fitting hole of the connecting rod. Is inserted and set in an internally fitted state as an inner member, and the outer diameter of the cylindrical molded body is set with respect to the axial end surface of the cylindrical molded body. Is a disk-shaped rotary pressurizing part that is smaller than the inner diameter of the fitting hole and larger than the inner diameter of the cylindrical molded body, and the outer peripheral surface of the end part in the axial direction and the traveling direction is substantially tapered.
- the tapered surface of the rotary pressurizing tool having pressure is pressed under rotation and pressurization, the cylindrical molded body is heated and softened by frictional heat generation, and the rotary pressurizing part is rotated and the rotation of the rotary pressurizing tool is rotated.
- Bringing a part other than the pressing part into contact with the cylindrical molded body The cylindrical molded body made of the bearing metal material force is plastically flowed in the same axial direction and radial outside as the traveling direction, and the bearing metal layer is formed on the inner surface of the fitting hole. It is characterized by direct bonding.
- Claim 2 is the entire axial direction according to claim 1, wherein a plurality of the connecting rods are stacked in a state where the axial centers of the fitting holes are aligned, and the fitting holes are combined.
- the cylindrical molded body of the bearing metal material having a length corresponding to the length is inserted and set inward so as to straddle each fitting hole of a plurality of connecting rods,
- the bearing metal layer is directly bonded and formed on the inner surface of each fitting hole of each connecting rod by the progress in the axial direction, and then divided into each connecting rod.
- Claim 3 relates to a connecting rod with a bearing.
- a cylindrical bearing metal layer formed by directly joining a bearing metal material to the inner surface of a circular fitting hole at the large end and z or small end by plastic heating under friction and under pressure. Is formed.
- the cylindrical molded body of the bearing metal material is inserted and set in the inner fitting state as an inner member. While rotating the disk-shaped rotary pressurizing part of the rotary pressurizing tool, specifically the taper surface of the outer peripheral surface in the axial direction and in the advancing direction, it is pressed against the axial end surface of the cylindrical molded body of the bearing metal material under pressure, The pressed part is heated and softened by frictional heat generation, and the rotary pressurizing part is rotated, and the part other than the rotary pressurizing part of the rotary pressurizing tool is advanced in the axial direction without contacting the cylindrical formed body.
- the cylindrical molded body is plastically flowed outward in the same axial direction and radial direction as the above traveling direction by frictional heat generation, and the bearing metal layer is directly joined to the inner surface of the fitting hole of the connecting rod to constitute the bearing.
- the manufacturing method of the present invention is a bearing metal set on the inner surface of the fitting hole by pressurizing and rotating the taper surface force in the rotary pressurizing tool, more specifically in the disc-shaped rotary pressurizing portion. Since the material is heated and softened by frictional heat generation and plastically flowed to form a bearing metal layer directly on the inner surface of the fitting hole, a large number of connecting rod bearings consisting of a back metal and a bearing metal have been used in the past. This eliminates the need for separate manufacturing through this process, and also eliminates the need for incorporating this into the connecting rod, reducing the manufacturing process of the connecting rod with bearings and reducing the required cost. it can.
- the contact area of the outer peripheral surface of the rotary pressurizing tool with the bearing metal material can be reduced as much as possible, the problem of causing seizure on the contact surface is avoided.
- the bearing metal layer on the inner surface of the fitting hole can be formed with a uniform thickness in the axial direction.
- a back metal with a plate thickness of about 1 to 1.5 mm in the conventional connecting rod bearing becomes unnecessary. This makes it possible to reduce the size and weight of the connecting rod as a whole.As a result, it is possible to increase the output of the automobile engine or improve the fuel consumption. Improvements can be expected to improve heat dissipation and also contribute to higher engine output.
- a plurality of connecting rods are stacked in a state where the shaft centers of the fitting holes coincide with each other, and the length corresponding to the total axial length of the fitting holes is combined.
- a cylindrical molded body of bearing metal material having a thickness is inserted and set inside so as to straddle each fitting hole of a plurality of connecting rods, and each fitting is performed by rotation of the rotary pressurizing tool and progression in the axial direction.
- the bearing metal layer is formed directly and continuously on the inner surface of the hole, and then divided into connecting rods. According to this manufacturing method, the inner surface of a large number of connecting rods has an efficiency.
- the bearing metal layer can be formed with high joint.
- this production method is particularly suitable as a production method for mass production.
- claim 3 relates to a connecting rod with a bearing, and the connecting rod with a bearing is provided with a bearing metal material on the inner surface of a circular fitting hole at the large end and Z or the small end.
- a cylindrical bearing metal layer is formed by plastic heating under friction and plastic flow under pressure, and is joined directly to the inner surface.
- a connecting rod with a powerful bearing has a backing metal.
- FIG. 1 is a view showing a connecting rod with a bearing (bearing metal layer) as an example of the present invention.
- FIG. 2 is an explanatory view of a main process of the method for forming the bearing metal layer of FIG. 1 which is an embodiment of the present invention.
- FIG. 3 is an explanatory diagram of a method for forming a bearing metal layer according to the embodiment.
- FIG. 4 is an explanatory diagram of the degree of processing in the method for forming a bearing metal layer of the same embodiment.
- FIG. 5 is a view showing an example of a cylindrical molded body of a bearing metal material used in the forming method of the same embodiment.
- FIG. 7 is an explanatory diagram of the connecting rod machining process after the formation of the bearing metal layer is completed.
- FIG. 9 is a comparative example diagram illustrating a comparative example with respect to the embodiment of the present invention.
- reference numeral 10 denotes a connecting rod, which has a large end portion 12, a small end portion 14 and a rod portion 16 therebetween.
- the large end 12 has a large end hole 18 (fitting hole) for mating with a crank pin
- the small end 14 has a small end hole 20 (fitting hole) for mating with a piston pin.
- the crank pin and the piston pin are rotatably coupled to each other.
- Thin and cylindrical bearing metal layers 22 and 24 having a corresponding cross-sectional shape are directly joined to the inner surfaces of the large end hole 18 and the small end hole 20, respectively.
- the small end portion 14 is connected to the crank pin and the piston pin through the bearing metal layers 22 and 24 in a rotatable and fitted state, respectively.
- the large end 12 is divided in half, and they are fastened with bolts and nuts.
- FIG. 2 26 is a rotary pressurizing tool, and 28 is a disk-shaped rotary pressurizing part that forms the main body.
- the rotary pressurizing portion 28 has an outer peripheral surface at the end in the axial direction and in the traveling direction (downward direction in the figure) as a taper surface 30.
- the rotary pressure tool 26 frictionally generates heat in a cylindrical formed body 38 (thickness of about 1 to 5 mm) having a bearing metal material force described later on the tapered surface 30 of the disk-like rotary pressure portion 28. Pressing downward in the figure and outward in the radial direction causes the bearing metal material to plastically flow.
- the disc-shaped rotary pressurizing portion 28 has a straight inner diameter regulating surface 32 parallel to the axial direction (short in the axial direction) on the upper side in the figure following the tapered surface 30 on the lower side. Slightly formed with small dimensions in the direction.
- the inner diameter regulating surface 32 is a portion that functions to determine the inner diameter of a bearing metal layer 22 to be described later.
- the straight inner diameter regulating surface 32 may be omitted depending on circumstances.
- [0030] 34 is a connecting part in the rotary pressurizing tool 26, and this connecting part 34 is a part for connecting the disk-like rotary pressurizing part 28 and the rotary pressurizing apparatus,
- the machined portion is not configured, and the outer diameter is made small so as not to contact the cylindrical molded body 38 during machining.
- Reference numeral 36 denotes a backup member.
- a cylindrical molded body 38 of a bearing metal material previously molded into a cylindrical shape is used as an inner member, and set to be inserted into the inner surface of the large end hole 18.
- the cylindrical shaped body 38 is rotated while rotating the disk-like rotational pressure portion 28 of the rotational pressure tool 26 connected to the rotational pressure device, more specifically the tapered surface 30 thereof.
- the cylindrical molded body 38 that is, the bearing metal material is heated and softened by the frictional heat generated during the pressing.
- the disk-shaped rotary pressurizing portion 28 has an outer diameter smaller than the inner diameter of the large end hole 18 and larger than the inner diameter of the cylindrical molded body 38.
- the rotary pressing tool 26, specifically, the disk-shaped rotary caloric pressure portion 28 is pushed downward in the axial direction in the figure to rotate the backup member 36 in the same direction.
- the bearing metal material is plastically flowed axially and radially outward in the same direction as the traveling direction.
- the bearing metal layer 22 is directly and firmly formed into a cylindrical shape and joined to the circular inner surface of the large end hole 18.
- the degree of processing of the cylindrical formed body 38 by the rotary pressing unit 28 is 7% or more.
- the strength of the force is t as the initial thickness of the cylindrical molded body 38, as shown in FIG.
- the bearing metal layer 22 can be satisfactorily pressure-bonded to the inner surface of the large end hole 18 by applying force at a workability of 7% or more.
- the cylindrical molded body 38 has a continuously continuous cylindrical shape in the circumferential direction before being inserted into the inner surface of the large end hole 18 as shown in FIG. 5 (A). Can be suitably used.
- such a continuous cylindrical forming body 38 having a seamless shape in the circumferential direction can be formed by various processing methods such as forging, drawing, and extrusion.
- a cylindrical plate obtained by rounding a plate can be used as the cylindrical molded body 38 as shown in FIG. 5 (B).
- a seamless cylindrical bearing metal layer 22 is formed during forming by processing with the rotary pressing tool 26.
- bearing metal material it is possible to use forging, powder sintering, mecha-calloy, rolling or wrought material.
- this bearing metal material an alloy based on A1 or an alloy based on Cu can be suitably used.
- Examples of alloys based on A1 include A1Sn alloys and A ⁇ Bi alloys.
- Cu-Sn alloy etc. can be illustrated as an alloy based on Cu.
- various ones such as one constructed by forging, one constructed by forging or one constructed by sintering can be used.
- carbon steel such as S55C
- chromium molybdenum steel such as SCM435 (steel for machine structural use)
- titanium alloy Ti-6A-4V, etc.
- aluminum alloy or the like
- the rotary pressure tool 26 in particular, the rotary pressure part 28 is made of a material having a higher melting point than the bearing metal material, and the outermost diameter of the rotary pressure part 28 is the inner diameter of the large end hole 18 as described above. Is made smaller.
- the thickness of the bearing metal layer 22 formed on the inner surface of the large end hole 18 is determined by the difference between the inner diameter of the large end hole 18 and the outer diameter of the rotary pressurizing unit 28. By changing the outer diameter, the thickness of the bearing metal layer 22 can be arbitrarily changed.
- the thickness of the bearing metal layer 22 is about 0.5 to 1.5 mm.
- the connecting rod 10 is preheated. Therefore, it is effective to improve the adhesion of the bearing metal layer 22 or to control the temperature such as water cooling in the case of excessive heat.
- the rotary pressurizing section 28 it is also effective to perform surface modifications such as heat treatment for quenching and tempering of tool steel, plasma powder overlay welding and thermal spraying. It is fruitful.
- cooling with cooling water inside it is effective because the life of the rotary pressing tool 26 can be extended.
- the interface temperature between the rotary pressurizing unit 28 and the bearing metal material is suitably a temperature range of about 100 ° C below the melting point of the bearing metal material.
- the temperature difference between the phases is large.
- the tapered surface 30 in the rotary pressurizing unit 28 is not necessarily a strictly tapered surface as long as it gradually increases in diameter from the front end in the traveling direction to the rear (upward in the figure). It may be a slightly curved surface.
- the taper surface 30 of the initially disk-shaped rotary pressurizing portion 28 is formed into a cylindrical shape as shown in FIG.
- the cylindrical body 38 can be made to plastically flow by pressing against the upper end surface of the body 38 with a low pressure to generate frictional heat and then applying a large thrust in the axial direction.
- the horizontal axis in FIG. 6 represents time
- the vertical axis represents the pressure applied from the rotary pressurizing unit 28 to the cylindrical molded body 38.
- the manufacturing method of the present embodiment allows the rotary pressurizing tool 26, specifically, the disk-like rotary calorific pressure portion 28 to press and rotate from the tapered surface 30 to the inside of the inner surface of the large end hole 18.
- the set-up cylindrical molded body 38 is heated and softened and plastically flowed by frictional heat generation, and the bearing metal layer 22 is joined directly to the inner surface of the large end hole 18. It is no longer necessary to separately manufacture a connecting rod bearing consisting of a plurality of processes, and there is no need to incorporate this into the connecting rod 10, and the manufacturing process of the connecting rod with a bearing can be reduced and required. Costs can also be reduced.
- the bearing metal layer 22 formed in this way also has a strong joined state to the inner surface of the large end hole 18 as compared to the case where the connecting rod bearing is manufactured and assembled separately from the connecting rod. Can do.
- the contact area of the outer peripheral surface of the rotary pressing tool 26 with respect to the bearing metal material can be reduced as much as possible, seizure occurs on the contact surface.
- the bearing metal layer 22 on the inner surface of the large end hole 18 can be formed with a uniform thickness in the axial direction.
- FIG. 8 shows another embodiment of the present invention.
- a plurality of connecting rods 10 are stacked so that the axial centers of the large end holes 18 coincide with each other, and the bearing has a length corresponding to the overall axial length of the large end holes 18 combined.
- a cylindrical metal body 38 of metal material is inserted and set inside each large end hole 18 ⁇ , and the large end hole of each connecting rod 10 is rotated by the rotation and axial movement of the rotary pressurizing tool 26.
- a bearing metal layer 22 is continuously bonded to the inner surface of 18 and directly bonded to the inner surface of each large end hole 18 and then divided into connecting rods 10.
- the large end holes 18 of the large number of connecting rods 10 have high efficiency on the inner surface.
- the bearing metal layer 22 can be formed by bonding.
- this manufacturing method is particularly suitable as a manufacturing method in mass production.
- FIG. 9 shows a comparative example for the above embodiment.
- (i) shows the case where the bearing metal layer 22 is formed inside the large end hole 18 of the connecting rod 10 alone, and (mouth) shows the inner surface of the large end hole 18 where a plurality of connecting rods 10 are stacked. This represents the case where the bearing metal layer 22 is continuously formed.
- the block-shaped bearing metal material 38A is set inside the large end hole 18 and at the bottom position, and the cylindrical pressure rod 40A is inserted into the large end hole 18 while rotating.
- the bearing metal material 38A is pressurized by a forward movement downward in the drawing, and the bearing metal material 38A is heated and softened by frictional heat generated by the rotation of the pressure rod 40A to be plastically flowed.
- the bearing metal layer 22 is formed on the inner surface of the large end hole 18 by pushing up upward (in the figure) from the bottom along the gap between the surface and the inner surface of the large end hole 18.
- resistance due to friction with the outer peripheral surface of the pressure rod 40A or the inner surface of the large end hole 18 acts on the minute gap between the outer peripheral surface of the pressure rod 40A and the inner surface of the large end hole 18
- the plastics do not flow upwards smoothly along the circle, and the temperature decreases in the meantime, and the resistance increases.
- This can form the bearing metal layer 22 over a sufficient height (axial length).
- the thickness of the bearing metal layer 22 is likely to be uneven, such as the thickness of the bearing metal layer 22 being thicker in the lower portion and the thickness being reduced in the upper portion.
- the entire outer peripheral surface of the pressure rod 40A is in frictional contact with the inner surface of the bearing metal material 38A and the inner surface of the bearing metal layer 22 over a wide area. As a result, it is difficult to form and join the bearing metal layer 22 smoothly.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/791,906 US7836592B2 (en) | 2004-11-30 | 2005-11-29 | Method of producing connecting rod with bearing |
EP05811477A EP1830077A4 (en) | 2004-11-30 | 2005-11-29 | PROCESS FOR PRODUCING A CONNECTING BAR WITH BEARING AND CONNECTING BAR WITH BEARING |
JP2006547938A JP4560054B2 (ja) | 2004-11-30 | 2005-11-29 | 軸受付きコネクティングロッドの製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004346962 | 2004-11-30 | ||
JP2004-346962 | 2004-11-30 |
Publications (1)
Publication Number | Publication Date |
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WO2006059595A1 true WO2006059595A1 (ja) | 2006-06-08 |
Family
ID=36565029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/021874 WO2006059595A1 (ja) | 2004-11-30 | 2005-11-29 | 軸受付きコネクティングロッドの製造方法及び軸受付きコネクティングロッド |
Country Status (5)
Country | Link |
---|---|
US (1) | US7836592B2 (ja) |
EP (1) | EP1830077A4 (ja) |
JP (1) | JP4560054B2 (ja) |
CN (1) | CN100554707C (ja) |
WO (1) | WO2006059595A1 (ja) |
Cited By (1)
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CN114406615A (zh) * | 2022-01-24 | 2022-04-29 | 中国科学院兰州化学物理研究所 | 一种整体式自润滑关节轴承润滑材料填设型腔的制造方法 |
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JP5688568B2 (ja) * | 2008-07-15 | 2015-03-25 | 山野井精機株式会社 | 被加工金属部材に突起を形成する突起形成方法 |
JP5691552B2 (ja) * | 2011-01-24 | 2015-04-01 | 日産自動車株式会社 | エンジンのコネクティングロッド及びその製造方法 |
DE102011001492A1 (de) | 2011-03-22 | 2012-09-27 | Mauser-Werke Oberndorf Maschinenbau Gmbh | Werkzeug und Verfahren zum Kalibrieren von Buchsen |
KR20140088598A (ko) * | 2011-11-02 | 2014-07-10 | 마우저-베르케 오베른도르프 마쉬넨바우 게엠베하 | 베어링 부시를 삽입하기 위한 방법 및 장치 |
WO2013146608A1 (ja) * | 2012-03-30 | 2013-10-03 | 大豊工業株式会社 | 摺動部材、及び、摺動部材の製造方法 |
AT512972B1 (de) * | 2012-06-04 | 2014-06-15 | Berndorf Band Gmbh | Endlosband mit einem ringförmigen Bandkörper |
DE102014001248A1 (de) * | 2014-02-03 | 2015-08-06 | Gkn Sinter Metals Engineering Gmbh | Pleuel-Kolben-Baugruppe mit einem Pleuel mit Kugelkopf |
US9114481B1 (en) * | 2014-02-21 | 2015-08-25 | Siemens Energy, Inc | Inertia friction disk welding |
WO2017149037A1 (de) * | 2016-03-02 | 2017-09-08 | Mauser-Werke Oberndorf Maschinenbau Gmbh | Verfahren und eine einrichtung zum einwalzen von buchsen |
DE102017129233A1 (de) * | 2017-12-08 | 2019-06-13 | Man Truck & Bus Ag | Vorrichtung, insbesondere Einlegehilfe, zur Gleitlagerschalenmontage |
CN109048037B (zh) * | 2018-08-23 | 2020-12-01 | 常熟理工学院 | 基于搅拌摩擦加工制备Al-Pb合金耐磨层的方法 |
CN110748543A (zh) * | 2019-11-22 | 2020-02-04 | 武汉中航精冲技术有限公司 | 防止销钉脱出的板状零件及其环形收口加工装置 |
CN112742981B (zh) * | 2020-12-18 | 2024-04-16 | 安徽创联汽车零部件有限公司 | 发动机止推片压接设备 |
CN117428067B (zh) * | 2023-12-01 | 2024-04-23 | 河北海珉工矿集团有限公司 | 一种锚索托盘加工用冲压设备 |
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- 2005-11-29 JP JP2006547938A patent/JP4560054B2/ja not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
CN100554707C (zh) | 2009-10-28 |
US7836592B2 (en) | 2010-11-23 |
EP1830077A1 (en) | 2007-09-05 |
US20080216599A1 (en) | 2008-09-11 |
CN101065586A (zh) | 2007-10-31 |
JPWO2006059595A1 (ja) | 2008-06-05 |
JP4560054B2 (ja) | 2010-10-13 |
EP1830077A4 (en) | 2011-05-04 |
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