CN103537644A - Aluminum alloy bicycle frame integral forming production method and mould for achieving same - Google Patents
Aluminum alloy bicycle frame integral forming production method and mould for achieving same Download PDFInfo
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- CN103537644A CN103537644A CN201310519910.6A CN201310519910A CN103537644A CN 103537644 A CN103537644 A CN 103537644A CN 201310519910 A CN201310519910 A CN 201310519910A CN 103537644 A CN103537644 A CN 103537644A
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Abstract
The invention relates to an aluminum alloy bicycle frame integral forming production method and a mould for achieving same. According to the process method and the mould, a bicycle frame free of welded joint can be produced out and the potential risk caused by a welded joint can be eliminated. The aluminum alloy bicycle frame integral forming production method comprises separating an upper mould from a lower mould of the bicycle frame mould; placing a bicycle frame core in the bicycle frame lower mould chamber of the bicycle frame mould horizontally; casting an liquid bicycle frame aluminum alloy into the pressure chamber which is formed in the middle of the bicycle frame lower mould chamber of the bicycle frame mould, wherein the temperature of the liquid bicycle frame aluminum alloy is 50 to 120 DEG C higher than that of a bicycle frame aluminum alloy liquid line; closing the upper mould and the lower mould of the bicycle frame mould to form the integral bicycle frame mould chamber; separating the upper mould from the lower mould of the bicycle frame and taking out the bicycle frame and remaining materials after molten metal in the pressure chamber is driven by a pressure head to fill the integral bicycle frame mould chamber and is pressurized and solidified. According to the aluminum alloy bicycle frame integral forming production method, the bicycle frame core which is matched with the inner chamber of the bicycle frame is produced by soluble core materials, the bicycle frame mould chamber which is provided with the bicycle frame core is filled with the liquid bicycle frame aluminum alloy under the action of the pressure, cooling, solidification and forming are performed under the high pressure, the bicycle frame core which is wrapped inside is dissolved in water, and accordingly the hollow integral bicycle frame is formed.
Description
Technical field
The present invention relates to a kind of Al-alloy bicycle frame monolithic molding preparation method.
The invention still further relates to a kind of mould of realizing Al-alloy bicycle frame monolithic molding preparation method.
Background technology
Along with the lifting day by day of people's living standard, the application of bicycle is particularly extended in body-building field to outdoor activity by traditional walking-replacing tool.Its make material also by traditional cast iron and steel to lighter metal material future development, Al-alloy bicycle has the features such as light, attractive in appearance, more and more be subject in recent years pursuing of broad masses, particularly sports fan, its market demand is surged rapidly.Al-alloy bicycle vehicle frame is all, by welding method, the pipe fitting weldings such as front pipe, middle pipe, lower pipe, chain stay, vertical fork, five-way are formed to unitized frame together substantially in the prior art.This kind of manufacturing process need to pass through the series of processes such as tubing cutting, distortion, welding, polishing, heat treatment.This process makes vehicle frame itself produce many welding points, and welding point not only affects the overall appearance degree of bicycle, and finds that by follow-up test and use this welding point can bring potential safety hazard to bicyclist.Chinese utility model patent 201020101149.6 discloses employing pressure casting method and has carried out the integrally formed thought of cycle frame, whole vehicle frame is divided into front-axle beam component and back rest component two parts, every part integral die-cast is shaped, and then two parts are fitted together, the method is only applicable to folding bicycle, can not be for the shaping of unitized frame, and the method requires front-axle beam and the back rest to be " work " font cross section, attractive in appearance not, market acceptance is low.
Summary of the invention
In order to overcome the technical problem of above-mentioned existence, the object of this invention is to provide a kind of Al-alloy bicycle frame monolithic molding preparation method that can solve vehicle body aesthetics and security.
Correspondingly, the technical problem that another one of the present invention will solve is to provide a kind of mould that can realize said method.
With regard to Al-alloy bicycle frame monolithic molding preparation method, the preparation method that the present invention solves the problems of the technologies described above comprises the steps: vehicle frame upper mould and counterdie to separate, vehicle frame core level is placed in the vehicle frame lower mode cavity of vehicle frame mould, front tube core head, saddle core print, five-way core print and the fabrication hole core print of vehicle frame core is placed in the corresponding core print seat of mould cavity, and the gap between vehicle frame core and vehicle frame die cavity is the wall thickness of vehicle frame; Liquid vehicle frame aluminium alloy by temperature higher than 50-120 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the mesotropic pressure chamber of vehicle frame lower mould, waters fluence and be the 1.05-1.3 of vehicle frame weight doubly; Between fork abaculus move to and vehicle frame core between spacing just equal the wall thickness of frame tube, vehicle frame upper mould counterdie is closed, form complete vehicle frame die cavity, the molten metal that utilizes pressure head to promote in pressure chamber is full of whole vehicle frame die cavity at 0.5-3 in time second, and at 1-5, in time second, increase fast pressure and keep, make the liquid aluminium alloy in vehicle frame mould cooling under the high pressure of 50-120MPa, and under the continuous action of this pressure solidification forming; By vehicle frame mould upper die and lower die separately, detach abaculus between fork, the vehicle frame and the pressure chamber clout that are wrapped with solubility vehicle frame core are taken out in the lump to vehicle frame die cavity and be cooled to room temperature, put into the water of 20 ℃～60 ℃, solubility vehicle frame core is dissolved and flow out vehicle frame tube chamber, take out cavity vehicle frame, remove pressure chamber clout, obtain Al-alloy bicycle unitized frame.
As Al-alloy bicycle frame monolithic molding preparation method, improve, it pours into a mould step: preferably by temperature, the liquid vehicle frame aluminium alloy higher than 80-100 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the mesotropic pressure chamber of vehicle frame mould vehicle frame counterdie, waters fluence and be the 1.1-1.15 of unitized frame weight doubly.
As the further improvement of Al-alloy bicycle frame monolithic molding preparation method, its matched moulds is also full of die cavity step: the molten metal that preferably utilizes pressure head to promote in pressure chamber is full of whole vehicle frame die cavity at 0.8-1.2 in time second.
As the further improvement of Al-alloy bicycle frame monolithic molding preparation method, its compression solidification forming step: preferably make that liquid aluminium alloy in vehicle frame mould is cooling under the high pressure of 80-100MPa can access good coagulation result.
With regard to can realizing the integrally formed mould of above-mentioned Al-alloy bicycle frame, the present invention is that the vehicle frame mould that solve the technical problem mainly comprises between vehicle frame patrix, vehicle frame counterdie, vehicle frame die cavity, the support of vehicle frame counterdie, die bottom plate, pressure chamber, pressure head, fork abaculus pull bar, socket cap sunk screw between abaculus and this fork.Described vehicle frame die cavity is to be opened in metal vehicle frame patrix, the vehicle frame die cavity of the interior volume of vehicle frame counterdie, to manage before vehicle frame, upper pipe, the horizontal diameter face of lower pipe and standpipe is that die joint is divided into upper and lower two parts, lay respectively at the correspondence position of upper die and lower die, after upper die and lower die closure, its shape is consistent with whole self-propelled vehicle frame, its size is than the large 0.8%-1.5% of the size of vehicle frame corresponding position, in it, lay the vehicle frame core that forms vehicle frame cavity, described vehicle frame core is by soluble-salt and the 4-12%(mass ratio of 88-96%) binding agent mix compacting form, at front pipe two ends, saddle upper end, the truncated cone-shaped core print of long 10-30mm is all left at five-way two ends, be used for supporting and fixing vehicle frame core.
Between vertical fork and chain stay left and right leg, lay abaculus between fork.Vehicle frame patrix is connected firmly by socket cap sunk screw and vehicle frame upper mould fixed plate, by vehicle frame upper mould fixed plate, is connected with pressurized equipment, realizes moving up and down of vehicle frame patrix; Vehicle frame counterdie below is by screw and pressure chamber, the support and connection of vehicle frame counterdie, and the support of vehicle frame counterdie is connected with die bottom plate by screw, and die bottom plate is arranged on the stationary work-table of pressurized equipment; Pressure head stretches in pressure chamber from pressure chamber end opening, under the drive of pressurization oil cylinder, moves up and down; In it, lay the vehicle frame core that forms vehicle frame cavity, between vertical fork left and right leg and chain stay left and right leg, lay abaculus between fork.
As realizing the integrally formed vehicle frame mould of above-mentioned Al-alloy bicycle frame: preferably made by H13 steel, its shape is consistent with whole self-propelled vehicle frame, and its size is than the large 0.9%-1.1% of the size of vehicle frame corresponding position.
As the vehicle frame core of realizing in the integrally formed vehicle frame mould of above-mentioned Al-alloy bicycle frame: preferred, vehicle frame core mixes compacting by sodium chloride and sodium silicate binder and forms, the mass percent of waterglass is 6-8%, surplus is sodium chloride, all leaves the truncated cone-shaped core print of long 15-25mm at front pipe two ends, saddle upper end, five-way two ends;
As realizing abaculus between the fork described in the integrally formed vehicle frame mould of above-mentioned Al-alloy bicycle frame, it is a wedge shape plate, the standpipe profile of its front end and vehicle frame adapts, rear end is provided with horizontal plane, to move in guide groove, top and bottom are the thin inclined-plane of thick front end, rear end, inclination angle is consistent with the angle between chain stay and vertical fork left and right leg, between chain stay and the left and right leg of vertical fork, can between chain stay and the left and right leg of vertical fork, do rectilinear motion by along continuous straight runs, after vehicle frame aluminium alloy is shaped and solidifies, between fork, abaculus is pitched an abaculus pull bar level and is detached chain stay and vertical fork left and right leg, so that whole vehicle frame takes out mold cavity.
Advantage and good effect that the present invention has are: due to the technical scheme that adopts above-mentioned one piece to be shaped, make whole vehicle frame realize monolithic molding by once-cast, saved the series of processes such as tubulation, cutting, distortion, assembling, welding, polishing of welded frame.Welding joint between each parts of whole vehicle frame, makes whole body contour elegant in appearance, and owing to having adopted this integrally formed method and the mould of realizing the method, has effectively promoted production efficiency.The present invention is not subject to the restriction of body frame structure for automotive, size, weight and chemical composition, can be widely used in the monolithic molding of various bicycle racks.
Accompanying drawing explanation
Fig. 1 is vehicle frame mould vertical profile schematic diagram of the present invention.
Fig. 2 is unitized frame mould schematic top plan view of the present invention.
Fig. 3 is solubility vehicle frame core schematic diagram of the present invention.
In figure:
1, vehicle frame patrix 2, vehicle frame counterdie 3, vehicle frame die cavity
4, abaculus 5, socket cap sunk screw 19, vertical fork between fork
7, pressure chamber 8, counterdie support 9, lower baffle plate
10, abaculus pull bar 12, ingate between pressure head 11, fork
13, upper mould fixed plate 20, chain stay 231, standpipe chamber
71, tube core before vehicle frame aluminum alloy melt 14, vehicle frame core 141, vehicle frame core
1411, tube core head 1412, the front tube core head 142 of vehicle frame core, vehicle frame core saddle core print before vehicle frame core
143, tube core under tube core head 145, vehicle frame core on vehicle frame core five-way core print 144, vehicle frame core
146, vehicle frame core standpipe core 147, vehicle frame core chain stay leg core 148, the oblique fork leg core of vehicle frame core
149, vehicle frame fabrication hole core print
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
A kind of Al-alloy bicycle vehicle frame integral forming method provided by the invention and the mould of realizing the method, it is characterized in that using solubility core material to make the vehicle frame core consistent with vehicle frame inner chamber, utilize liquid vehicle frame aluminium alloy to be full of under pressure the vehicle frame die cavity of laying vehicle frame core, and under high pressure cooled and solidified is shaped, be rolled in inner vehicle frame core and dissolve in water, form hollow unitized frame;
Described vehicle frame aluminium alloy is a kind of of cast Al-Si alloy or wrought aluminium alloy weight; Preferably, vehicle frame aluminium alloy is ZL101 or A356 cast Al-Si alloy or 6061 or 6063 or 6066 wrought aluminium alloies.
Described vehicle frame die cavity 3, be made of metal, diametral plane along upper pipe, lower pipe, front pipe is divided into upper and lower two parts, lay respectively at the correspondence position of vehicle frame patrix 1 and vehicle frame counterdie 2, after vehicle frame patrix 1 and vehicle frame counterdie 2 closures, its shape is consistent with whole self-propelled vehicle frame, and its size is than the large 0.8%-1.5% of the size of vehicle frame corresponding position, in it, lay the vehicle frame core 14 that forms vehicle frame cavity, between vertical fork left and right leg and chain stay left and right leg, lay abaculus 4 between fork.Vehicle frame patrix 1 is connected firmly by socket cap sunk screw 5 and upper mould fixed plate 13, by upper mould fixed plate 13, is connected with pressurized equipment; Vehicle frame counterdie 2 belows are supported 8 by screw 51,52 with pressure chamber 7, vehicle frame counterdie and are connected, and counterdie supports 8 and is connected with lower baffle plate 9 by screw 53,54, and lower baffle plate 9 is arranged on the stationary work-table of pressurized equipment; Pressure head 10 inserts into the inner from pressure chamber 7 end openings, under the drive of pressurization oil cylinder, moves up and down; Preferably, vehicle frame die cavity 3, is made by H13 steel, and its shape is consistent with whole self-propelled vehicle frame, and its size, than the large 0.9%-1.1% of the size of vehicle frame corresponding position, is laid the vehicle frame core that forms vehicle frame cavity in it, between vertical fork and chain stay left and right leg, lays abaculus between fork.
Described vehicle frame core is by soluble-salt and the 4%-12%(mass ratio of 88%-96%) binding agent mixes compacting and forms, and all leaves the truncated cone-shaped core print of long 10-30mm at front pipe two ends, saddle upper end, five-way two ends, be used for supporting and fixing vehicle frame core; Preferably, vehicle frame core mixes compacting by sodium chloride and water glass of binder and forms, and the mass percent of waterglass is 6%-8%, and surplus is sodium chloride, all leaves the truncated cone-shaped core print of long 15-25mm at front pipe two ends, saddle upper end, five-way two ends;
Between described fork, abaculus 4 is wedge shape plates, the standpipe chamber 231 of its front end and vehicle frame adapts, rear end is provided with horizontal plane, to move in guide groove, top and bottom are the thin inclined-plane of thick front end, rear end, inclination angle is consistent with the angle between chain stay 20 and vertical fork 19 left and right legs, between chain stay 20 and the left and right leg of vertical fork 19, can between chain stay 20 and the left and right leg of vertical fork 19, do rectilinear motion by along continuous straight runs, after vehicle frame aluminium alloy is shaped and solidifies, between fork, abaculus 4 is detached the left and right leg of chain stay 20 and vertical fork 19 by abaculus pull bar 11 levels between fork, so that whole vehicle frame takes out vehicle frame die cavity 3.
A kind of Al-alloy bicycle vehicle frame integral forming method provided by the invention comprises the steps:
One lays vehicle frame core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, vehicle frame core 14 levels are placed in the vehicle frame lower mode cavity of vehicle frame mould, front tube core head 141, saddle core print 142, five-way core print 143 and the fabrication hole core print 149 of vehicle frame core 14 is placed in the corresponding core print seat of die cavity, and the gap between vehicle frame core 14 and vehicle frame die cavity 23 is the wall thickness of vehicle frame.
Two cast: the liquid vehicle frame aluminium alloy by temperature higher than 50-120 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the mesotropic pressure chamber 7 of vehicle frame mould vehicle frame counterdie, water fluence and are the 1.05-1.3 of vehicle frame weight doubly.Preferably, the liquid vehicle frame aluminium alloy by temperature higher than 80-100 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the mesotropic pressure chamber 7 of vehicle frame mould vehicle frame counterdie, waters fluence and be the 1.1-1.15 of unitized frame weight doubly.
Three matched moulds are also full of die cavity: by vehicle frame patrix 1 and vehicle frame counterdie 2 closures, between fork, abaculus 4 moves to and the spacing of 14, vehicle frame core equals the wall thickness of frame tube just, form complete vehicle frame die cavity 3, the molten metal that utilizes pressure head 10 to promote in pressure chamber 7 is full of whole vehicle frame die cavity 3 at 0.5-3 in time second.Preferably, the molten metal that utilizes pressure head 10 to promote in pressure chamber 7 is full of whole vehicle frame die cavity 3 at 0.8-1.2 in time second.
Four compression solidifications are shaped: increase fast pressure and keep, making the liquid aluminium alloy in vehicle frame mould cooling under the high pressure of 50-120MPa, and under the continuous action of this pressure solidification forming.Preferably, make the liquid aluminium alloy in vehicle frame mould cooling under the high pressure of 80-100MPa;
Five pickups and molten core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, detach abaculus 4 between fork, the unitized frame and the pressure chamber clout that are wrapped with vehicle frame core are taken out in the lump to vehicle frame die cavity 3 and be cooled to room temperature, put into the water of 20 ℃～60 ℃, vehicle frame core 14 is dissolved and flow out vehicle frame tube chamber, take out cavity vehicle frame, remove pressure chamber clout, obtain Al-alloy bicycle unitized frame.
Embodiment one
The integrally formed method of a kind of aluminium alloy provided by the invention city vehicle carriage, is characterized in that utilizing liquid vehicle frame to be full of under pressure vehicle frame die cavity 8 with aluminium alloy, and under high pressure cooled and solidified is shaped; Described vehicle frame aluminium alloy is cast Al-Si alloy ZL101;
Described vehicle frame die cavity 3, by H13 steel, made, diametral plane along upper pipe, lower pipe, front pipe is divided into upper and lower two parts, lay respectively at the correspondence position of vehicle frame patrix 1 and vehicle frame counterdie 2, after vehicle frame patrix 1 and vehicle frame counterdie 2 closures, its shape is consistent with whole self-propelled vehicle frame, and its size is than the size of vehicle frame corresponding position large 1.0%, in it, lay the vehicle frame core 14 that forms vehicle frame cavity, between vertical fork and chain stay left and right leg, lay abaculus 4 between fork.Vehicle frame patrix 1 is connected firmly by socket cap sunk screw 54 and upper mould fixed plate 13, by upper mould fixed plate 13, is connected with pressurized equipment; Vehicle frame counterdie 2 belows are supported 8 by screw with pressure chamber 7, vehicle frame counterdie and are connected, and vehicle frame counterdie supports and is connected with lower vehicle frame counterdie base plate 9 by screw, and lower vehicle frame counterdie base plate 10 is arranged on the stationary work-table of pressurized equipment; Pressure head 10 inserts into the inner from pressure chamber 7 end openings, under the drive of pressurization oil cylinder, moves up and down;
Described vehicle frame core is by 88% soluble-salt sodium chloride and 12%(mass ratio) sodium silicate binder mixes compacting and forms, and all leaves the truncated cone-shaped core print of long 10mm at front pipe two ends, saddle upper end, five-way two ends, be used for supporting and fixing vehicle frame core;
Between described fork, abaculus position 4 is wedge shape plates, the standpipe chamber 231 of its front end and vehicle frame adapts, rear end is provided with horizontal plane, to move in guide groove, top and bottom are the thin inclined-plane of thick front end, rear end, inclination angle is consistent with the angle between chain stay 20 and vertical fork 19 left and right legs, between chain stay 20 and the left and right leg of vertical fork 19, can between chain stay 20 and the left and right leg of vertical fork 19, do rectilinear motion by along continuous straight runs, after vehicle frame aluminium alloy 71 is shaped and solidifies, between fork, abaculus 4 is detached chain stay left and right leg and vertical fork left and right leg by abaculus pull bar 11 levels between fork, so that whole vehicle frame takes out mold cavity 3.
The integrally formed method of a kind of aluminium alloy city bicycles vehicle frame provided by the invention comprises the steps:
One lays vehicle frame core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, vehicle frame core 14 levels are placed in the vehicle frame lower mode cavity of vehicle frame mould, front tube core head 1412, saddle core print 142, five-way core print 143 and the fabrication hole core print 149 of vehicle frame core 14 is placed in the corresponding core print seat of die cavity, and the gap between vehicle frame core 14 and vehicle frame die cavity 3 is the wall thickness of vehicle frame.
Two cast: the liquid vehicle frame aluminium alloy 71 by temperature higher than 120 ℃ of vehicle frame aluminium alloy liquidus temperatures pours in the mesotropic pressure chamber 7 of vehicle frame mould vehicle frame counterdie, 1.05 times of watering fluence and be vehicle frame weight.
Three matched moulds are also full of die cavity: by vehicle frame patrix 1 and vehicle frame counterdie 2 closures, between fork, abaculus 4 moves to and the spacing of 14, vehicle frame core equals the wall thickness 1mm of frame tube just, form complete vehicle frame die cavity 3, the molten metal that utilizes pressure head 10 to promote in pressure chamber 7 was full of whole vehicle frame die cavity 3 within 0.5 second time.
Four compression solidifications are shaped: increase fast pressure and keep, making the liquid aluminium alloy 71 in vehicle frame mould cooling under the high pressure of 120MPa, and under the continuous action of this pressure solidification forming.
Five pickups and molten core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, detach abaculus 4 between fork, the unitized frame and the pressure chamber clout that are wrapped with vehicle frame core are taken out in the lump to vehicle frame die cavity 3 and be cooled to room temperature, put into the water of 20 ℃, vehicle frame core 14 is dissolved and flow out vehicle frame tube chamber, take out cavity vehicle frame, remove pressure chamber clout, obtain Al-alloy bicycle unitized frame.
Embodiment two
A kind of aluminium alloy mountain bike frame integral forming method provided by the invention, it is characterized in that using solubility core material to make the vehicle frame core consistent with vehicle frame inner chamber, utilize liquid vehicle frame aluminium alloy to be full of under pressure the vehicle frame die cavity of laying vehicle frame core, and under high pressure cooled and solidified is shaped, be rolled in inner vehicle frame core and dissolve in water, form hollow unitized frame;
Described vehicle frame aluminium alloy is cast Al-Si alloy A356
Described vehicle frame die cavity 3, be made of metal, diametral plane along upper pipe, lower pipe, front pipe is divided into upper and lower two parts, lay respectively at the correspondence position of vehicle frame patrix 1 and vehicle frame counterdie 2, after vehicle frame patrix 1 and vehicle frame counterdie 2 closures, its shape is consistent with whole self-propelled vehicle frame, and its size is than the size of vehicle frame corresponding position large 0.8%, in it, lay the vehicle frame core 14 that forms vehicle frame cavity, between vertical fork and chain stay left and right leg, lay abaculus 4 between fork.Vehicle frame patrix 1 is connected firmly by socket cap sunk screw 54 and upper mould fixed plate 13, by upper mould fixed plate 13, is connected with pressurized equipment; Vehicle frame counterdie 2 belows are supported 8 by screw with pressure chamber 7, vehicle frame counterdie and are connected, and vehicle frame counterdie supports 8 and is connected with baffle plate under vehicle frame 9 by screw, and under vehicle frame, baffle plate 9 is arranged on the stationary work-table of pressurized equipment; Pressure head 10 inserts into the inner from pressure chamber 7 end openings, under the drive of pressurization oil cylinder, moves up and down;
Described vehicle frame core is by 96% soluble-salt potassium chloride and 4%(mass ratio) binding agent aluminium borate whisker mixes compacting and forms, and the truncated cone-shaped core print that all leaves long 20mm at front pipe two ends, saddle upper end, five-way two ends is used for supporting and fixing vehicle frame core;
Between described fork, abaculus position 4 is wedge shape plates, the standpipe chamber 231 of its front end and vehicle frame adapts, rear end is provided with horizontal plane, to move in guide groove, top and bottom are the thin inclined-plane of thick front end, rear end, inclination angle is consistent with the angle between chain stay 20 and vertical fork 19 left and right legs, between chain stay 20 and the left and right leg of vertical fork 19, can between chain stay 20 and the left and right leg of vertical fork 19, do rectilinear motion by along continuous straight runs, after vehicle frame aluminium alloy 71 is shaped and solidifies, between fork, abaculus 4 is detached chain stay 20 and vertical fork 19 left and right legs by abaculus pull bar 11 levels between fork, so that whole vehicle frame takes out mold cavity 3.
A kind of Al-alloy bicycle vehicle frame integral forming method provided by the invention comprises the steps:
One lays vehicle frame core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, vehicle frame core 14 levels are placed in the vehicle frame lower mode cavity of vehicle frame mould, front tube core head 1412, saddle core print 142, five-way core print 143 and the fabrication hole core print 149 of vehicle frame core 14 is placed in the corresponding core print seat of die cavity, and the gap between vehicle frame core 14 and vehicle frame die cavity 3 is the wall thickness 2mm of vehicle frame.
Two cast: the liquid vehicle frame aluminium alloy 71 by temperature higher than 50-120 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the mesotropic pressure chamber 7 of vehicle frame mould vehicle frame counterdie, 1.1 times of watering fluence and be vehicle frame weight.
Three matched moulds are also full of die cavity: by vehicle frame patrix 1 and vehicle frame counterdie 2 closures, between fork, abaculus 4 moves to and the spacing of 14, vehicle frame core equals the wall thickness 2mm of frame tube just, form complete vehicle frame die cavity 3, the molten metal that utilizes pressure head 10 to promote in pressure chamber 7 was full of whole vehicle frame die cavity 3 within 1.2 second time.
Four compression solidifications are shaped: increase fast pressure and keep, making the liquid aluminium alloy 71 in vehicle frame mould cooling under the high pressure of 80MPa, and under the continuous action of this pressure solidification forming.
Five pickups and molten core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, detach abaculus 4 between fork, the unitized frame and the pressure chamber clout that are wrapped with vehicle frame core are taken out in the lump to vehicle frame die cavity 3 and be cooled to room temperature, put into the water of 40 ℃, vehicle frame core 14 is dissolved and flow out vehicle frame tube chamber, take out cavity vehicle frame, remove pressure chamber clout, obtain Al-alloy bicycle unitized frame.
Embodiment three
A kind of aluminium alloy race bicycle vehicle frame integral forming method provided by the invention, it is characterized in that using solubility core material to make the vehicle frame core consistent with vehicle frame inner chamber, utilize liquid vehicle frame aluminium alloy to be full of under pressure the vehicle frame die cavity of laying vehicle frame core, and under high pressure cooled and solidified is shaped, be rolled in inner vehicle frame core and dissolve in water, form hollow unitized frame;
Described vehicle frame aluminium alloy is wrought aluminium alloy 6066;
Described vehicle frame die cavity 3, be made of metal, diametral plane along upper pipe, lower pipe, front pipe is divided into upper and lower two parts, lay respectively at the correspondence position of vehicle frame patrix 1 and vehicle frame counterdie 2, after vehicle frame patrix 1 and vehicle frame counterdie 2 closures, its shape is consistent with whole self-propelled vehicle frame, and its size is than the size of vehicle frame corresponding position large 1.5%, in it, lay the vehicle frame core 14 that forms vehicle frame cavity, between vertical fork and chain stay left and right leg, lay abaculus 4 between fork.Vehicle frame patrix 1 is connected firmly by socket cap sunk screw 54 and upper mould fixed plate 13, by upper mould fixed plate 13, is connected with pressurized equipment; Vehicle frame counterdie 2 belows are supported 8 by screw with pressure chamber 7, vehicle frame counterdie and are connected, and vehicle frame counterdie supports 8 and is connected with baffle plate under vehicle frame 9 by screw, and under vehicle frame, baffle plate 9 is arranged on the stationary work-table of pressurized equipment; Pressure head 10 inserts into the inner from pressure chamber 7 end openings, under the drive of pressurization oil cylinder, moves up and down;
Described vehicle frame core is by 92% soluble-salt sodium chloride and 8%(mass ratio) water glass of binder mixes compacting and forms, and all leaves the truncated cone-shaped core print of long 30mm at front pipe two ends, saddle upper end, five-way two ends, be used for supporting and fixing vehicle frame core;
Between described fork, abaculus position 4 is wedge shape plates, the standpipe chamber 231 of its front end and vehicle frame adapts, rear end is provided with horizontal plane, to move in guide groove, top and bottom are the thin inclined-plane of thick front end, rear end, inclination angle is consistent with the angle between chain stay 20 and vertical fork 19 left and right legs, between chain stay 20 and the left and right leg of vertical fork 19, can between chain stay 20 and the left and right leg of vertical fork 19, do rectilinear motion by along continuous straight runs, after vehicle frame aluminium alloy 71 is shaped and solidifies, between fork, abaculus 4 is detached chain stay 20 and vertical fork 19 left and right legs by abaculus pull bar 11 levels between fork, so that whole vehicle frame takes out mold cavity 3.
A kind of Al-alloy bicycle vehicle frame integral forming method provided by the invention comprises the steps:
One lays vehicle frame core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, vehicle frame core 14 levels are placed in the vehicle frame lower mode cavity of vehicle frame mould, front tube core head 1412, saddle core print 142, five-way core print 143 and the fabrication hole core print 149 of vehicle frame core 14 is placed in the corresponding core print seat of die cavity, and the gap between vehicle frame core 14 and vehicle frame die cavity 3 is the wall thickness 3mm of vehicle frame.
Two cast: the liquid vehicle frame aluminium alloy 71 by temperature higher than vehicle frame aluminum alloy melt phase line temperature 50 C pours in the mesotropic pressure chamber 7 of vehicle frame mould vehicle frame counterdie, 1.3 times of watering fluence and be vehicle frame weight.
Three matched moulds are also full of die cavity: by vehicle frame patrix 1 and vehicle frame counterdie 2 closures, between fork, abaculus 4 moves to and the spacing of 14, vehicle frame core equals the wall thickness 3mm of frame tube just, form complete vehicle frame die cavity 3, the molten metal that utilizes pressure head 10 to promote in pressure chamber 7 was full of whole vehicle frame die cavity 3 within 3 second time.
Four compression solidifications are shaped: increase fast pressure and keep, making the liquid aluminium alloy 71 in vehicle frame mould cooling under the high pressure of 50MPa, and under the continuous action of this pressure solidification forming.
Five pickups and molten core: vehicle frame patrix 1 and vehicle frame counterdie 2 are separated, detach abaculus 4 between fork, the unitized frame and the pressure chamber clout that are wrapped with vehicle frame core are taken out in the lump to vehicle frame die cavity 3 and be cooled to room temperature, put into the water of 60 ℃, vehicle frame core 14 is dissolved and flow out vehicle frame tube chamber, take out cavity vehicle frame, remove pressure chamber clout, obtain Al-alloy bicycle unitized frame.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (18)
1. Al-alloy bicycle frame monolithic molding preparation method, described method comprises the steps: vehicle frame mould vehicle frame patrix, vehicle frame counterdie separately, vehicle frame core level is placed in the vehicle frame lower mode cavity of vehicle frame mould, liquid vehicle frame aluminium alloy by temperature higher than 50-120 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the mesotropic pressure chamber of vehicle frame mould vehicle frame counterdie, by vehicle frame mould vehicle frame patrix, the complete vehicle frame die cavity of the closed formation of vehicle frame counterdie, the molten metal that utilizes pressure head to promote in pressure chamber is full of after whole vehicle frame die cavity, vehicle frame mould vehicle frame patrix and vehicle frame counterdie are separated, take out vehicle frame and pressure chamber clout, it is characterized in that: in described method, use solubility core material to make the vehicle frame core consistent with vehicle frame inner chamber, utilize liquid vehicle frame aluminium alloy to be full of under pressure the vehicle frame die cavity of laying vehicle frame core, and under high pressure cooled and solidified is shaped, be rolled in inner vehicle frame core dissolves in water, form hollow unitized frame.
2. method according to claim 1, it is characterized in that: the vehicle frame core that described use solubility core material is made and vehicle frame are put into the water of 20 ℃ to 60 ℃ after taking out from vehicle frame die cavity in the lump and being cooled to room temperature, solubility vehicle frame core is dissolved and flow out vehicle frame tube chamber.
3. method according to claim 1, is characterized in that: the liquid aluminium alloy in described vehicle frame mould is cooling under the high pressure of 50-120MPa, and under the continuous action of this pressure solidification forming.
4. according to the method in any one of claims 1 to 3, it is characterized in that: described by after vehicle frame mould vehicle frame patrix, vehicle frame counterdie closure, the gap between vehicle frame core and fork between abaculus and vehicle frame die cavity forms the wall thickness of vehicle frame.
5. it is characterized in that according to the method in any one of claims 1 to 3: described vehicle frame aluminum alloy melt water fluence be unitized frame weight 1.05-1.3 doubly.
6. it is characterized in that according to the method in any one of claims 1 to 3: describedly utilize pressure head to promote the step that molten metal in pressure chamber is full of whole vehicle frame die cavity to complete in time second at 0.5-3.
7. it is characterized in that according to the method in any one of claims 1 to 3: the pressurization of described pressure completes in time second at 1-5.
8. method according to claim 7, is characterized in that: the pressurization of described pressure completes in time second at 2-4.
9. it is characterized in that according to the method in any one of claims 1 to 3: the liquid vehicle frame aluminium alloy by temperature higher than 80-100 ℃ of vehicle frame aluminium alloy liquidus temperature pours in the pressure chamber of vehicle frame mould vehicle frame lower mode cavity.
10. according to the method described in claim 5, it is characterized in that: described vehicle frame aluminum alloy melt water fluence be unitized frame weight 1.1-1.15 doubly.
11. methods according to claim 6, is characterized in that: describedly utilize pressure head to promote the step that molten metal in pressure chamber is full of whole vehicle frame die cavity to complete in time second at 0.8-1.2.
12. according to the method in any one of claims 1 to 3, it is characterized in that: make the liquid aluminium alloy in vehicle frame mould cooling under the high pressure of 80-100MPa.
13. realize the mould of Al-alloy bicycle frame monolithic molding preparation method as claimed in claim 1, described mould comprises vehicle frame patrix, vehicle frame counterdie, vehicle frame die cavity, vehicle frame counterdie supports, pressure chamber, pressure head, abaculus pull bar between abaculus and this fork between fork, described vehicle frame die cavity is the vehicle frame die cavity that is opened in the interior volume of metal vehicle frame patrix and vehicle frame counterdie, front pipe with vehicle frame, upper pipe, the horizontal diameter face of lower pipe and standpipe is that die joint is divided into upper and lower two parts by vehicle frame die cavity, lay respectively at the correspondence position of vehicle frame patrix and vehicle frame counterdie, described vehicle frame die cavity shape is consistent with whole self-propelled vehicle frame, described pressure head stretches in pressure chamber from pressure chamber end opening, under the drive of pressurization oil cylinder, along pressure chamber direction, doing upper and lower piston type moves, it is characterized in that: in described vehicle frame die cavity, lay and use solubility core material to make the vehicle frame core consistent with vehicle frame inner chamber, between described fork, abaculus is placed between vertical fork left and right leg and chain stay left and right leg.
14. moulds according to claim 13, is characterized in that: described vehicle frame core is by soluble-salt and the 4%-12%(mass ratio of 88%-96%) binding agent mix compacting form.
15. moulds according to claim 13, is characterized in that: described vehicle frame core material mixes compacting by sodium chloride and sodium silicate binder and forms, and the mass percent of waterglass is 6%-8%(mass ratio), surplus is sodium chloride.
16. moulds according to claim 13, is characterized in that: described vehicle frame core material mixes compacting by potassium chloride and silica sol binder and forms, and the mass percent of Ludox is 4%-6%(mass ratio), surplus is potassium chloride.
17. moulds according to claim 13, it is characterized in that: between described fork, abaculus is the plate of a wedge shape, the standpipe profile of its front end and vehicle frame adapts, rear end is provided with horizontal plane, described rear end is provided with abaculus pull bar between fork, so that push-and-pull campaign in guide groove, top and bottom are that rear end is thick, the inclined-plane that front end is thin, angle of inclination is consistent with the angle between chain stay and vertical fork left and right leg, between chain stay and the left and right leg of vertical fork, can between chain stay and the left and right leg of vertical fork, do rectilinear motion by along continuous straight runs, after vehicle frame aluminium alloy is shaped and solidifies, between fork, abaculus is pitched an abaculus pull bar level and is detached chain stay and vertical fork left and right leg, whole vehicle frame is taken out to mold cavity.
18. moulds according to claim 13, is characterized in that: after described vehicle frame mould vehicle frame upper cavity, vehicle frame lower mode cavity closure, its shape is consistent with whole self-propelled vehicle frame, and its size is than the large 0.8%-1.5% of the size of vehicle frame corresponding position.
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| CN201310519910.6A CN103537644B (en) | 2013-10-29 | 2013-10-29 | Aluminum alloy bicycle frame integral forming production method and mould for achieving same |
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| CN201310519910.6A CN103537644B (en) | 2013-10-29 | 2013-10-29 | Aluminum alloy bicycle frame integral forming production method and mould for achieving same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104815955A (en) * | 2015-03-30 | 2015-08-05 | 天津市金轮天大数控机床有限公司 | Making method of integrally formed bicycle frame |
| CN111959002A (en) * | 2020-07-02 | 2020-11-20 | 林书伟 | Method for manufacturing bicycle parts made of composite materials |
| CN112935216A (en) * | 2021-01-28 | 2021-06-11 | 台山市中镁科技有限公司 | Integrated forming bump-through process for magnesium alloy bicycle frame |
| CN112935217A (en) * | 2021-01-28 | 2021-06-11 | 台山市中镁科技有限公司 | Magnesium alloy bicycle frame integral forming core-pulling process |
| CN114309487A (en) * | 2022-01-12 | 2022-04-12 | 鼎镁新材料科技股份有限公司 | Bicycle frame integrated casting internal mold structure with hollow structure and forming preparation method |
| CN117862462A (en) * | 2024-03-11 | 2024-04-12 | 江苏中鑫车业有限公司 | Integrated machining and forming device and process for electric vehicle frame |
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| CN117862462A (en) * | 2024-03-11 | 2024-04-12 | 江苏中鑫车业有限公司 | Integrated machining and forming device and process for electric vehicle frame |
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