CN116201804A - Motorcycle crankshaft with impact-resistant oil hole structure and processing technology thereof - Google Patents
Motorcycle crankshaft with impact-resistant oil hole structure and processing technology thereof Download PDFInfo
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- CN116201804A CN116201804A CN202310062895.0A CN202310062895A CN116201804A CN 116201804 A CN116201804 A CN 116201804A CN 202310062895 A CN202310062895 A CN 202310062895A CN 116201804 A CN116201804 A CN 116201804A
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- 238000005516 engineering process Methods 0.000 title description 9
- 230000035939 shock Effects 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 50
- 238000005553 drilling Methods 0.000 claims description 48
- 238000010079 rubber tapping Methods 0.000 claims description 31
- 238000005496 tempering Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 96
- 239000010705 motor oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
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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
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
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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
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to the technical field of motorcycle crankshafts, in particular to a motorcycle crankshaft with an impact-resistant oil hole structure, which comprises a motorcycle crankshaft body, wherein a connecting rod shaft of the motorcycle crankshaft body and the side surface of a crank are both provided with a communication oil duct, two crank surfaces of the motorcycle crankshaft body are both provided with oil inlet channels communicated with the oil duct, the opening surface of the oil duct is provided with first threads, the inside of an opening of the oil duct is provided with a plugging block in a matching way, the surface of the plugging block is provided with second threads, and the second threads are in matching connection with the first threads. In this scheme, through seting up first screw thread in the opening part of oil duct to set up the shutoff piece of matching, and the second screw thread is seted up on the surface of shutoff piece, when first screw thread and second screw thread matching connection, can be with shutoff piece stable installation in the opening part of oil duct, through threaded connection's mode, promoted the stability of shutoff piece installation in the oil duct opening, promoted the shock resistance of oilhole.
Description
Technical Field
The invention relates to the technical field of motorcycle crankshafts, in particular to a motorcycle crankshaft with an impact-resistant oil hole structure and a processing technology thereof.
Background
The oil hole in the crankshaft can be used for enabling engine oil to flow into the oil duct so as to facilitate the engine oil to lubricate components, in the prior art, the disclosed patent number is CN201921352575.4, and the elastic retainer ring for pressurizing and installing holes is added at the oil duct port of the crankshaft, so that the bearing capacity of the oil plug to strong impact force is effectively improved, the occurrence of performance failure of a product in the use process is reduced, and the reliability of the product in the use process is improved; however, in this patent, the crankshaft is operated at a high speed, so that the centrifugal force is high, and the stability of the circlip installed in the oil passage opening is lowered, thereby lowering the tightness of the oil passage opening.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a motorcycle crankshaft with an impact-resistant oil hole structure and a processing technology thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a take motorcycle bent axle of shock-resistant oilhole structure, includes the motorcycle bent axle body, the intercommunication oil duct has all been seted up to the connecting rod axle of motorcycle bent axle body and the cranked side, two crank surfaces of motorcycle bent axle body all have seted up the oil feed way with the oil duct intercommunication, first screw thread has been seted up on the opening surface of oil duct, the inside shutoff piece that has placed of opening of oil duct, the second screw thread has been seted up on the surface of shutoff piece, second screw thread and first screw thread matching connection.
Preferably, the opening of the oil duct is stepped.
Preferably, the plugging block is in a convex shape, a sealing gasket is adhered to the surface of the plugging block, and the sealing gasket is in contact with the side face of the opening of the oil duct.
Preferably, the surface of the connecting rod shaft of the motorcycle crankshaft body is provided with an oil outlet, and the oil outlet is communicated with the oil duct.
The invention also provides a processing technology of the motorcycle crankshaft with the impact-resistant oil hole structure, which comprises the following steps:
s1, selecting a carbon steel workpiece, and respectively processing two cranks, a crank pin, a plugging block and two shaft rods in a turning mode;
s2, combining and welding and fixing the two cranks, the crank pin and the two shaft rods according to the existing assembly mode, and finishing the preliminary processing of the crankshaft;
s3, fixing the crankshafts on a workbench of a drilling machine, then operating the drilling machine to perform drilling operation from the surface of one of the crankshafts, taking out the drill bit from the crankshafts after the drill bit is drilled into the crank pin to a certain depth, drilling oil channels, replacing the positions of the crankshafts, sequentially and obliquely drilling holes from the surfaces of the two crankshafts to the oil channels for completing drilling of two oil inlet channels, and finally adjusting the positions of the crankshafts, and drilling oil outlet holes on the crank pin by the drilling machine;
s4, forming a first thread at the opening of the oil duct in a tapping mode, forming a second thread on the surface of the plugging block in a threading mode along the arc surface of the plugging block, and matching the sizes of the first thread and the second thread;
s5, placing the plugging block into a high-frequency furnace for heating treatment, wherein the heating temperature is 830-1060 ℃, the heating time is 30-50 minutes, placing the heated plugging block into oil for quenching treatment, placing the quenched plugging block into the high-frequency furnace for tempering treatment, and the tempering temperature is 500-650 ℃ and the tempering time is 10-15 minutes
S6, performing heat treatment on the crankshaft;
s7, after the crankshaft and the plugging block are taken out and naturally cooled, sequentially shaping the crankshaft and the plugging block;
s8, installing the plugging block at the oil duct opening of the crankshaft in a threaded manner, and completing the assembly of the crankshaft.
Preferably, the first thread and the second thread have a dimension M10.
Preferably, the process of heat treatment of the crankshaft in S6 is as follows: the high-frequency heating coil is sleeved at the journal of the crankshaft in sequence, the journal is heated by the high-frequency heating coil, the temperature is heated to 800-900 ℃, the heat is preserved for 50-80 minutes, the crankshaft is taken out, the quenched crankshaft is placed into oil liquid for cooling, then the crankshaft is placed into a tempering furnace, the temperature is controlled at 500-550 ℃, and the heat is preserved for 100-130 minutes.
Preferably, in the step S7, the crankshaft and the plugging block are subjected to shaping treatment through a grinding machine, and the grinding speed is 110-150 m/S.
Preferably, the tapping mode in the step S4 is operated by a tapping machine, the rotating speed required by the tapping is 300-600 r/min when the tapping machine works, and the moving speed of the tapping is 0.5-1mm/S.
Preferably, the threading mode in the step S4 is operated by a threading machine, the threading machine is required to have a threading speed of 500-700 r/min and a threading moving speed of 0.25-0.5 mm/S when in operation.
Compared with the prior art, the invention has the following beneficial effects:
in this scheme, through seting up first screw thread in the opening part of oil duct to set up the shutoff piece of matching, and the second screw thread is seted up on the surface of shutoff piece, when first screw thread and second screw thread matching connection, can be with shutoff piece stable installation in the opening part of oil duct, through threaded connection's mode, promoted the stability of shutoff piece installation in the oil duct opening, promoted the shock resistance of oilhole.
Drawings
FIG. 1 is an isometric view of a motorcycle crankshaft with an impact resistant oil hole structure of the present invention;
FIG. 2 is a cross-sectional view of a motorcycle crankshaft with an impact resistant oil hole structure of the present invention;
fig. 3 is a schematic diagram of a plugging block structure of a motorcycle crankshaft with an impact-resistant oil hole structure.
In the figure: the motorcycle crankshaft comprises a motorcycle crankshaft body 1, an oil duct 2, a plugging block 3, an oil inlet channel 4, an oil outlet hole 5, a first thread 6, a sealing washer 7 and a second thread 8.
Description of the embodiments
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
The motorcycle crankshaft with the impact-resistant oil hole structure shown in the figures 1-3 comprises a motorcycle crankshaft body 1, a connecting rod shaft of the motorcycle crankshaft body 1 and the side face of a crank are both provided with a communicating oil duct 2, two crank surfaces of the motorcycle crankshaft body 1 are both provided with an oil inlet duct 4 communicated with the oil duct 2, and the opening of the oil duct 2 is in a ladder shape, so that a plugging block 3 is conveniently matched and installed in the oil duct 2.
The first thread 6 is arranged on the surface of the opening of the oil duct 2, the plugging block 3 is arranged in the opening of the oil duct 2 in a matched mode, the second thread 8 is arranged on the surface of the plugging block 3, the second thread 8 is connected with the first thread 6 in a matched mode, the first thread 6 is arranged at the opening of the oil duct 2, the matched plugging block 3 is arranged, the second thread 8 is arranged on the surface of the plugging block 3, when the first thread 6 and the second thread 8 are connected in a matched mode, the plugging block 3 can be stably arranged at the opening of the oil duct 2, and the stability of the plugging block 3 arranged in the opening of the oil duct 2 is improved in a threaded mode; when the plugging block 3 is disassembled, the surface of the plugging block 3 is provided with an inner hexagonal hole or a plum blossom hole in advance, so that a worker can conveniently rotate the plugging block 3 through a tool, the plugging block 3 can conveniently take out the plugging block 3 in the oil duct 2 by rotating the internal thread of the oil duct 2.
The sealing block 3 is in a convex shape, the sealing gasket 7 is adhered to the surface of the sealing block 3, the sealing gasket 7 is in contact with the side face of the opening of the oil duct 2, the sealing gasket 7 increases the sealing performance of the surface of the sealing block 3 and the inner surface of the oil duct 2, and the sealing performance of stored oil in the oil duct 2 is improved.
The oil outlet 5 has been seted up on the surface of the connecting rod axle of motorcycle bent axle body 1, and oil outlet 5 and oil duct 2 intercommunication, and oil outlet 5 is when sending along with the bent axle soon, and lubricating oil in the oil duct 2 can throw away to the surface of part from oil outlet 5, along with the friction between two parts, and then makes things convenient for fluid to paint on the surface of two parts.
Examples
The invention also discloses a processing technology of the motorcycle crankshaft with the impact-resistant oil hole structure, which comprises the following steps:
s1, selecting a carbon steel workpiece, and respectively processing two cranks, a crank pin, a plugging block 3 and two shaft rods in a turning mode;
s2, combining and welding and fixing the two cranks, the crank pin and the two shaft rods according to the existing assembly mode, and finishing the preliminary processing of the crankshaft;
s3, fixing the crankshafts on a workbench of a drilling machine, then operating the drilling machine to perform drilling operation from the surface of one of the crankshafts, taking out the drill bit from the crankshafts after the drill bit is drilled into the crank pin to a certain depth, drilling the oil duct 2, replacing the position of the crankshafts, sequentially obliquely drilling holes from the surfaces of the two crankshafts to the oil duct 2 for completing drilling of the two oil inlets 4, and finally adjusting the position of the crankshafts, and drilling the oil outlet 5 on the crank pin by the drilling machine;
s4, opening a first thread 6 at the opening of the oil duct 2 in a tapping mode, opening a second thread 8 at the surface of the plugging block 3 along the circular arc surface of the plugging block 3 in a threading mode, matching and matching the sizes of the first thread 6 and the second thread 8, wherein the size of the first thread 6 and the second thread 8 is M10, the tapping mode is operated by a tapping machine, the rotating speed required by the tapping machine in working is 300 r/min, and the tapping moving speed is 0.5mm/S; the threading mode is operated by a threading machine, when the threading machine works, the threading speed is 500 r/min, and the threading moving speed is 0.25 mm/s;
s5, placing the plugging block 3 into a high-frequency furnace for heating treatment, wherein the heating temperature is 830 ℃, the heating time is 30 minutes, placing the heated plugging block 3 into oil for quenching treatment, placing the quenched plugging block 3 into the high-frequency furnace for tempering treatment, and the tempering temperature is 500 ℃ and the tempering time is 10 minutes;
s6, performing heat treatment on the crankshaft, wherein the heat treatment process of the crankshaft comprises the following steps: sleeving a high-frequency heating coil at the journal of the crankshaft in sequence, heating the journal through the high-frequency heating coil, heating to 800 ℃, preserving heat for 50 minutes, taking out, putting the quenched crankshaft into oil for cooling, putting the crankshaft into a tempering furnace, controlling the temperature to 500 ℃, and preserving heat for 100 minutes;
s7, after the crankshaft and the plugging block 3 are taken out and naturally cooled, respectively shaping the crankshaft and the plugging block 3 by a grinding machine, wherein the grinding speed is 110 m/S;
and S8, installing the plugging block 3 at the opening of the oil duct 2 of the crankshaft in a threaded manner, and completing the assembly of the crankshaft.
Examples
The invention also discloses a processing technology of the motorcycle crankshaft with the impact-resistant oil hole structure, which comprises the following steps:
s1, selecting a carbon steel workpiece, and respectively processing two cranks, a crank pin, a plugging block 3 and two shaft rods in a turning mode;
s2, combining and welding and fixing the two cranks, the crank pin and the two shaft rods according to the existing assembly mode, and finishing the preliminary processing of the crankshaft;
s3, fixing the crankshafts on a workbench of a drilling machine, then operating the drilling machine to perform drilling operation from the surface of one of the crankshafts, taking out the drill bit from the crankshafts after the drill bit is drilled into the crank pin to a certain depth, drilling the oil duct 2, replacing the position of the crankshafts, sequentially obliquely drilling holes from the surfaces of the two crankshafts to the oil duct 2 for completing drilling of the two oil inlets 4, and finally adjusting the position of the crankshafts, and drilling the oil outlet 5 on the crank pin by the drilling machine;
s4, opening a first thread 6 at the opening of the oil duct 2 in a tapping mode, opening a second thread 8 at the surface of the plugging block 3 along the circular arc surface of the plugging block 3 in a threading mode, matching and matching the sizes of the first thread 6 and the second thread 8, wherein the size of the first thread 6 and the second thread 8 is M10, the tapping mode is operated by a tapping machine, the rotating speed required by the tapping machine in working is 400 r/min, and the tapping moving speed is 0.7mm/S; the threading mode is operated by a threading machine, when the threading machine works, the threading speed is 550 r/min, and the threading moving speed is 0.35 mm/s;
s5, placing the plugging block 3 into a high-frequency furnace for heating treatment, wherein the heating temperature is 900 ℃, the heating time is 38 minutes, placing the heated plugging block 3 into oil for quenching treatment, placing the quenched plugging block 3 into the high-frequency furnace for tempering treatment, and the tempering temperature is 580 ℃, and the tempering time is 12 minutes;
s6, performing heat treatment on the crankshaft, wherein the heat treatment process of the crankshaft comprises the following steps: sleeving a high-frequency heating coil at the journal of the crankshaft in sequence, heating the journal through the high-frequency heating coil, heating to 830 ℃, preserving heat for 55 minutes, taking out, putting the quenched crankshaft into oil for cooling, putting the crankshaft into a tempering furnace, controlling the temperature to 520 ℃, and preserving heat for 110 minutes;
s7, after the crankshaft and the plugging block 3 are taken out and naturally cooled, respectively shaping the crankshaft and the plugging block 3 by a grinding machine, wherein the grinding speed is 128 m/S;
and S8, installing the plugging block 3 at the opening of the oil duct 2 of the crankshaft in a threaded manner, and completing the assembly of the crankshaft.
Examples
The invention also discloses a processing technology of the motorcycle crankshaft with the impact-resistant oil hole structure, which comprises the following steps:
s1, selecting a carbon steel workpiece, and respectively processing two cranks, a crank pin, a plugging block 3 and two shaft rods in a turning mode;
s2, combining and welding and fixing the two cranks, the crank pin and the two shaft rods according to the existing assembly mode, and finishing the preliminary processing of the crankshaft;
s3, fixing the crankshafts on a workbench of a drilling machine, then operating the drilling machine to perform drilling operation from the surface of one of the crankshafts, taking out the drill bit from the crankshafts after the drill bit is drilled into the crank pin to a certain depth, drilling the oil duct 2, replacing the position of the crankshafts, sequentially obliquely drilling holes from the surfaces of the two crankshafts to the oil duct 2 for completing drilling of the two oil inlets 4, and finally adjusting the position of the crankshafts, and drilling the oil outlet 5 on the crank pin by the drilling machine;
s4, opening a first thread 6 at the opening of the oil duct 2 in a tapping mode, opening a second thread 8 at the surface of the plugging block 3 along the circular arc surface of the plugging block 3 in a threading mode, matching and matching the sizes of the first thread 6 and the second thread 8, wherein the size of the first thread 6 and the second thread 8 is M10, the tapping mode is operated by a tapping machine, the rotating speed required by the tapping machine is 530 r/min, the moving speed of the tapping is 0.85mm/S, the threading mode is operated by a threading machine, the threading speed required by the threading machine is 630 r/min, and the moving speed of the threading is 0.41mm/S;
s5, placing the plugging block 3 into a high-frequency furnace for heating treatment, wherein the heating temperature is 1000 ℃, the heating time is 44 minutes, placing the heated plugging block 3 into oil for quenching treatment, placing the quenched plugging block 3 into the high-frequency furnace for tempering treatment, and the tempering temperature is 630 ℃, and the tempering time is 14 minutes;
s6, performing heat treatment on the crankshaft, wherein the heat treatment process of the crankshaft comprises the following steps: sleeving a high-frequency heating coil at the journal of the crankshaft in sequence, heating the journal through the high-frequency heating coil, heating to 885 ℃, preserving heat for 68 minutes, taking out, putting the quenched crankshaft into oil for cooling, putting the crankshaft into a tempering furnace, controlling the temperature at 535 ℃, and preserving heat for 120 minutes;
s7, after the crankshaft and the plugging block 3 are taken out and naturally cooled, respectively shaping the crankshaft and the plugging block 3 by a grinding machine, wherein the grinding speed is 140 m/S;
and S8, installing the plugging block 3 at the opening of the oil duct 2 of the crankshaft in a threaded manner, and completing the assembly of the crankshaft.
Examples
The invention also discloses a processing technology of the motorcycle crankshaft with the impact-resistant oil hole structure, which comprises the following steps:
s1, selecting a carbon steel workpiece, and respectively processing two cranks, a crank pin, a plugging block 3 and two shaft rods in a turning mode;
s2, combining and welding and fixing the two cranks, the crank pin and the two shaft rods according to the existing assembly mode, and finishing the preliminary processing of the crankshaft;
s3, fixing the crankshafts on a workbench of a drilling machine, then operating the drilling machine to perform drilling operation from the surface of one of the crankshafts, taking out the drill bit from the crankshafts after the drill bit is drilled into the crank pin to a certain depth, drilling the oil duct 2, replacing the position of the crankshafts, sequentially obliquely drilling holes from the surfaces of the two crankshafts to the oil duct 2 for completing drilling of the two oil inlets 4, and finally adjusting the position of the crankshafts, and drilling the oil outlet 5 on the crank pin by the drilling machine;
s4, opening a first thread 6 at the opening of the oil duct 2 in a tapping mode, opening a second thread 8 at the surface of the plugging block 3 along the circular arc surface of the plugging block 3 in a threading mode, matching and matching the sizes of the first thread 6 and the second thread 8, wherein the size of the first thread 6 and the second thread 8 is M10, the tapping mode is operated by a tapping machine, the rotating speed required by the tapping machine in working is 600 r/min, and the tapping moving speed is 1mm/S; the threading mode is operated by a threading machine, when the threading machine works, the threading speed is 700 r/min, and the threading moving speed is 0.5mm/s;
s5, placing the plugging block 3 into a high-frequency furnace for heating treatment, wherein the heating temperature is 1060 ℃, the heating time is 50 minutes, placing the heated plugging block 3 into oil for quenching treatment, placing the quenched plugging block 3 into the high-frequency furnace for tempering treatment, and the tempering temperature is 650 ℃, and the tempering time is 15 minutes;
s6, performing heat treatment on the crankshaft, wherein the heat treatment process of the crankshaft comprises the following steps: sleeving a high-frequency heating coil at the journal of the crankshaft in sequence, heating the journal through the high-frequency heating coil, heating to 900 ℃, preserving heat for 80 minutes, taking out, putting the quenched crankshaft into oil for cooling, putting the crankshaft into a tempering furnace, controlling the temperature at 550 ℃, and preserving heat for 130 minutes;
s7, after the crankshaft and the plugging block 3 are taken out and naturally cooled, respectively shaping the crankshaft and the plugging block 3 by a grinding machine, wherein the grinding speed is 150 m/S;
and S8, installing the plugging block 3 at the opening of the oil duct 2 of the crankshaft in a threaded manner, and completing the assembly of the crankshaft.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a take motorcycle bent axle of shock-resistant oilhole structure, includes motorcycle bent axle body (1), connecting rod axle and the cranked side of motorcycle bent axle body (1) all have seted up intercommunication oil duct (2), two crank surfaces of motorcycle bent axle body (1) all have seted up inlet channel (4) with oil duct (2) intercommunication, a serial communication port, first screw thread (6) have been seted up on the opening surface of oil duct (2), shutoff piece (3) have been placed in the inside matching of opening of oil duct (2), second screw thread (8) have been seted up on the surface of shutoff piece (3), second screw thread (8) and first screw thread (6) matchd connection.
2. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 1, wherein the opening of the oil duct (2) is stepped.
3. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 1, wherein the plugging block (3) is in a convex shape, a sealing gasket (7) is adhered to the surface of the plugging block (3), and the sealing gasket (7) is in contact with the opening side surface of the oil duct (2).
4. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 1, wherein an oil outlet hole (5) is formed in the surface of a connecting rod shaft of the motorcycle crankshaft body (1), and the oil outlet hole (5) is communicated with the oil duct (2).
5. The process for manufacturing the motorcycle crankshaft with the impact-resistant oil hole structure according to claims 1 to 4, characterized by comprising the following steps:
s1, selecting a carbon steel workpiece, and respectively processing two cranks, a crank pin, a plugging block (3) and two shaft rods in a turning mode;
s2, combining and welding and fixing the two cranks, the crank pin and the two shaft rods according to the existing assembly mode, and finishing the preliminary processing of the crankshaft;
s3, fixing the crankshafts on a workbench of a drilling machine, then operating the drilling machine to perform drilling operation from the surface of one of the crankshafts, taking out the drill bit from the crankshafts after the drill bit is drilled into the crank pin to a certain depth, drilling the oil duct (2), replacing the position of the crankshafts, sequentially obliquely drilling holes from the surfaces of the two crankshafts to the oil duct (2) for completing drilling of the two oil inlet channels (4), finally adjusting the position of the crankshafts, and drilling the oil outlet (5) on the crank pin by the drilling machine;
s4, forming a first thread (6) at the opening of the oil duct (2) in a tapping mode, forming a second thread (8) on the surface of the plugging block (3) in a threading mode along the arc surface of the plugging block (3), and matching the sizes of the first thread (6) and the second thread (8);
s5, placing the plugging block (3) into a high-frequency furnace for heating treatment, wherein the heating temperature is 830-1060 ℃, the heating time is 30-50 minutes, placing the heated plugging block (3) into oil for quenching treatment, and placing the quenched plugging block (3) into the high-frequency furnace for tempering treatment, wherein the tempering temperature is 500-650 ℃, and the tempering time is 10-15 minutes;
s6, performing heat treatment on the crankshaft;
s7, after the crankshaft and the plugging block (3) are taken out and naturally cooled, sequentially shaping the crankshaft and the plugging block (3);
s8, installing the plugging block (3) on the opening of the oil duct (2) of the crankshaft in a threaded manner, and completing the assembly of the crankshaft.
6. A motorcycle crankshaft with an impact resistant oil hole structure according to claim 5, characterized in that the first thread (6) and the second thread (8) have a size M10.
7. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 5, wherein the process of heat treatment of the crankshaft in S6 is as follows: the high-frequency heating coil is sleeved at the journal of the crankshaft in sequence, the journal is heated by the high-frequency heating coil, the temperature is heated to 800-900 ℃, the heat is preserved for 50-80 minutes, the crankshaft is taken out, the quenched crankshaft is placed into oil liquid for cooling, then the crankshaft is placed into a tempering furnace, the temperature is controlled at 500-550 ℃, and the heat is preserved for 100-130 minutes.
8. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 7, wherein in the step S7, the crankshaft and the plugging block (3) are subjected to shaping treatment through grinding machines respectively, and the grinding speed is 110-150 m/S.
9. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 5, wherein the tapping mode in the step S4 is operated by a tapping machine, the tapping machine is operated at a rotation speed of 300-600 r/min and a tapping moving speed of 0.5-1mm/S.
10. The motorcycle crankshaft with the impact-resistant oil hole structure according to claim 5, wherein the threading mode in the step S4 is operated by a threading machine, the threading machine is required to carry out threading at a speed of 500-700 r/min and the threading moving speed of 0.25-0.5 mm/S when in operation.
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| CN105798558A (en) * | 2014-12-29 | 2016-07-27 | 上汽通用五菱汽车股份有限公司 | Small-displacement internal combustion engine crankshaft preparation method |
| CN107654481A (en) * | 2017-09-30 | 2018-02-02 | 中国北方发动机研究所(天津) | A kind of crank-shaft link neck oil pocket sealing structure |
| CN109108751A (en) * | 2018-10-12 | 2019-01-01 | 青岛锦瑞特园林工具有限公司 | Connecting rod pin hole Refining apparatus and Production of Crankshaft technique |
| CN208749799U (en) * | 2018-07-27 | 2019-04-16 | 重庆天得力工业有限公司 | Crankshaft of motorcycle assembly |
| CN214465524U (en) * | 2021-03-03 | 2021-10-22 | 周思含 | Crank connecting rod mechanism for motorcycle engine |
| CN215673134U (en) * | 2021-06-25 | 2022-01-28 | 中船动力研究院有限公司 | Crankshaft, diesel engine and vehicle |
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2023
- 2023-01-18 CN CN202310062895.0A patent/CN116201804B/en active Active
Patent Citations (6)
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| CN105798558A (en) * | 2014-12-29 | 2016-07-27 | 上汽通用五菱汽车股份有限公司 | Small-displacement internal combustion engine crankshaft preparation method |
| CN107654481A (en) * | 2017-09-30 | 2018-02-02 | 中国北方发动机研究所(天津) | A kind of crank-shaft link neck oil pocket sealing structure |
| CN208749799U (en) * | 2018-07-27 | 2019-04-16 | 重庆天得力工业有限公司 | Crankshaft of motorcycle assembly |
| CN109108751A (en) * | 2018-10-12 | 2019-01-01 | 青岛锦瑞特园林工具有限公司 | Connecting rod pin hole Refining apparatus and Production of Crankshaft technique |
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| CN215673134U (en) * | 2021-06-25 | 2022-01-28 | 中船动力研究院有限公司 | Crankshaft, diesel engine and vehicle |
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