CN104589910A - Hot forming wheel and manufacturing method thereof - Google Patents
Hot forming wheel and manufacturing method thereof Download PDFInfo
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- CN104589910A CN104589910A CN201410680977.2A CN201410680977A CN104589910A CN 104589910 A CN104589910 A CN 104589910A CN 201410680977 A CN201410680977 A CN 201410680977A CN 104589910 A CN104589910 A CN 104589910A
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Abstract
The invention relates to a wheel and a manufacturing method of the wheel. The hot forming wheel and the manufacturing method of the hot forming wheel solve the problems that the weight of the wheel is high and the circular degree of the inner circumferential face of a wheel rim is poor. The manufacturing method of the hot forming wheel comprises a wheel rim manufacturing procedure, a spoke manufacturing procedure and a wheel rim and spoke connecting procedure; the wheel rim and a spoke are both made of steel; the wheel rim manufacturing procedure comprises the sequentially performed steps of wheel rim round pipe molding, wheel rim workblank molding, wheel rim workblank heating and wheel rim molding operation; the spoke manufacturing procedure comprises the sequentially performed steps of molding a spoke basic plate with technology holes, heating the spoke basic plate, molding the spoke and operating spoke hole opening; the wheel rim and spoke connecting procedure comprises the steps that the manufactured wheel rim is arranged on the major diameter end of the circumferential wall of the spoke in a sleeving mode and the circumferential wall of the spoke is in welded connection with the wheel rim, and a gradually thinner structure is formed from the installation face of the spoke to the circumferential wall of the spoke. The hot forming wheel and the manufacturing method of the hot forming wheel can reduce the weight of the wheel and improve the circular degree of the inner circumferential face of the wheel rim.
Description
Technical field
The present invention relates to wheel and preparation method thereof, particularly relate to a kind of thermoforming wheel and preparation method thereof.
Background technology
Wheel comprises wheel rim and spoke, connects, spoke and wheel rim are formed a whole by the mode of welding with the inner side of the lateral surface of spoke border with the installation spoke face of wheel rim.All be provided with wheel rim at the axial two ends of wheel rim, the axial two ends of installing tire during tire are connected to together with wheel rim; Valve port is also provided with, for passing through for valve during mounting tyre in wheel rim.The end wall of spoke is provided with the bolt hole of centre hole and centrally hole circumference distribution, China Patent No. be 2009200218307, authorize publication date be February 17 in 2010 day, be called in the patent documentation of " lightweight high-intensity rim " and disclose a kind of wheel.Wheel in this patent document comprises wheel rim and is welded on spoke on wheel rim, wheel rim comprise wheel rim, bead seat, convex peak, kerve and with spoke contact point, spoke be connected to wheel rim with on spoke contact point, wheel rim is surfaces externally and internally bus is all arc.China Patent No. be 20081001205361, authorize publication date be February 7 in 2010 day, be called a kind of method for making of wheel of the patent document breaker in middle of " aluminium alloy plate type wheel and job operation thereof ".
Existing wheel method for making has the following disadvantages: undertaken making by aluminum alloy and improve the intensity of wheel by the thickness increasing wheel rim and spoke and make intensity reach requirement, so can cause the heavier-weight of wheel, the Heavy Weight of wheel then can increase the oil consumption of automobile; Centre hole and bolt hole have welded aftershaping at wheel rim and spoke, cause the charge capacity of wheel and wheel rim assembling process large thus increase energy consumption; Material consumption amount when wheel rim makes is large; The circularity of wheel rim inner peripheral surface is low; The Joint strenght of the weld nugget of spoke and wheel rim is poor; Easily displacement is produced between wheel rim and spoke in welding process; Easily translation is produced during valve port perforate; Commissure on wheel rim easily produces cracking; Wheel rim surfaces externally and internally can produce unfairness phenomenon.
Summary of the invention
The present invention aims to provide and a kind ofly can reduce wheel weight, the thermoforming wheel improving wheel rim inner peripheral surface circularity and preparation method thereof, solves the problem of the wheel Heavy Weight existing for existing wheel method for making, wheel rim inner peripheral surface circularity difference.
Above technical matters is solved by following technical proposal: a kind of thermoforming wheel method for making, comprises making wheel rim operation, making spoke operation is connected operation with rim and spoke;
Described making wheel rim operation comprises following making step:
A1, shaping wheel rim pipe: the closed pipe producing circumferential closure with steel plate.Closed pipe can be undertaken processing, also can being processed by the mode of direct punching press by the mode of butt welding mouth for after circle by curling.
A2, shaping wheel rim blank: closed circle control is made the wheel rim blank that diameter is less than rim design diameter.
A3, heating wheel rim blank: wheel rim blank is heated to more than the Ac3 temperature of the material making wheel rim blank and is heated to wheel rim blank microstructure and be converted into austenite and form hot wheel rim blank.
A4, shaping wheel rim: hot wheel rim blank is radially expanded to and cools again after diameter reaches the intended diameter of wheel rim and form wheel rim.
Expand first to make and directly then form wheel rim by the mode extended out through wheel rim blank less than normal, the circularity of wheel rim inner peripheral surface also can be made to meet the requirements without the need to being undertaken shaping by mould in wheel rim in the course of processing, thus the comfort feature adding man-hour can be improved.Existing method forms wheel rim by direct interior expansion, then need in wheel rim increase in pattern to ensure the circularity of wheel rim inner circumferential, and due to wheel rim be not isometrical vertically everywhere, therefore interior pattern can only be spliced by many parts, so not only makes trouble but also easily produces stitching error and cause wheel rim inner peripheral surface circularity poor.Wheel rim heating temperatures is extended out more than the Ac3 temperature of corresponding Steel material, not only expansion time laborsaving, rim surface planeness can be improved, and the dimensional accuracy of wheel rim, and workpiece material becomes martensite by austenite transforms completely after cooling, its hardness reaches about HRC52, and its tensile strength reaches 1300Mpa ~ 1500MPa; The thickness that can reduce wheel rim like this under the prerequisite ensureing wheel rim intensity is also weight.
Described making spoke operation comprises following making step:
The spoke substrate of B1, forming strip auxiliary hole: the spoke substrate being processed circular sheet-like structures by steel plate, processes auxiliary hole at the center of spoke substrate;
B2, heating spoke substrate: will more than wheel rim base plate heating to the Ac3 temperature of the material of making spoke substrate be heated to spoke substrate microstructure and be converted into austenite and form hot spoke substrate;
B3, shaping spoke: the axis along hot spoke substrate is carried out punching press and shape and comprised the spoke perisporium of taper and be connected to the spoke of spoke end wall of spoke perisporium miner diameter end, and carry out round as a ball to spoke perisporium and make spoke all wall thickness trailing wheel spoke end wall places end start to diminish gradually to the other end, and then spoke is cooled; Spoke perisporium is thickening, and mass distribution is reasonable, can reduce weight.
Shaping, not only laborsaving during punching press by more than spoke heating temperatures to the Ac3 temperature of Steel material carrying out, the dimensional accuracy of spoke can be improved simultaneously; And workpiece material becomes martensite by austenite transforms completely after cooling, its hardness reaches about HRC52, and its tensile strength reaches 1300Mpa ~ 1500MPa; The thickness that can reduce spoke like this under the prerequisite ensureing Spoke Strength is also weight.Be forming hole in the process making spoke, charge capacity when operating spoke in subsequent assembly is reduced, thus play the effect of the energy consumption reducing subsequent handling.
Described rim and spoke connects operation and comprises following making step:
C1, wheel rim cover is set on spoke perisporium bigger diameter end;
C2, by spoke perisporium and wheel rim weld together.
As preferably, between steps A 2 and steps A 3, also comprising step a1, offer valve port plane is set: extruding the plane for offering valve port at the position that wheel rim blank arranges valve port.Plane is set, is not easy when starting valve port to produce position translation.Pressing face is arranged before heating, convenient during molding flat, otherwise plane is difficult to shaping exactly, easily causes spoke to be out of shape time shaping.
As preferably, steps A 2 comprises the following steps:
A2-1, the shaping exit skirt of outer expansion: formation exit skirt is radially expanded at the axial two ends of closed pipe;
A2-2, interior expansion is formed has the wheel rim of wheel rim: bell-mouthed free end and closed pipe are all radially inwardly expanded and obtained diameter be less than rim design diameter wheel rim blank, formed on described exit skirt when expanding along the radially outward protruding wheel rim of wheel rim blank.The wheel rim with wheel rim can be produced in the mode economizing material.
As preferably, steps A 1 comprises the following steps:
A1-1, shaping wheel rim substrate: the wheel rim substrate being processed bar shaped schistose texture by steel plate;
A1-2, forming strip gap pipe: wheel rim substrate is rolled into the band gap pipe with butt seam;
A1-3, forming strip gap flat tube: the two ends of wheel rim substrate are become planar structure in the same plane by arcuate structure, make band gap pipe become the band gap flat tube that butt seam place is planar structure;
A1-4, shaping closed flat tube: the two ends weld together of wheel rim substrate is formed weld seam at butt seam place, make to be with gap flat tube to become the closed flat tube of circumferential closure;
A1-5, shaping closed pipe: the commissure of closed flat tube is become arcuate structure by planar structure, make closed flat tube become closed pipe.The wheel rim produced is not easy to produce commissure cracking phenomena.
As preferably, between steps A 1-4 and steps A 1-5, also comprise the welding slag of step a2, removing commissure.Welding slag can be avoided to be isolated in the circularity affecting wheel rim between wheel rim and forming mould, simultaneously welding slag can be avoided to be shed in the process of shaping wheel rim collision degree that wheel rim affects die surface between mould.
As preferably, step a2 comprises the following steps:
A2-1, by the welding slag removing of weld seam along the radial both sides of closed flat tube;
A2-2, by the welding slag removing of weld seam along the axial both sides of closed flat tube.The order of this kind of removal welding slag can reduce the impact except welding slag operation butt welded seam place intensity.The method causes the slippage of solder design intensity to be 5/1000ths, if remove welding slag conversely, the slippage of the solder design intensity caused is millesimal 15.
As preferably, between step B3 and step C1, also comprise step b2, the shaping spoke welding end conical surface: the end face of spoke perisporium bigger diameter end is processed into the conical surface being positioned at the interior volume that spoke surrounds.The weld strength of spoke between wheel rim can be improved.
As preferably, be interference fit between the bigger diameter end of spoke perisporium and wheel rim in step C1.Before not welding, namely spoke and wheel rim can not be fixed together by frock, are not easy to produce displacement thus the accuracy that can ensure wheel rim and spoke connection location easily in welding process between wheel rim and spoke.
As preferably, the weld nugget formed in step C2 is positioned at the Fit of wheel rim and spoke perisporium.Weld nugget is not easy be corroded and cause bad connection.
A kind of thermoforming wheel, comprise wheel rim and spoke, it is characterized in that, described spoke and wheel rim are all steel structure and by being heated to reshaping after Ac3 temperature, described spoke comprises spoke perisporium and spoke end wall, one end of described spoke perisporium links together in the mode of integrative-structure with described spoke end wall, the other end of described spoke perisporium with described wheel rim weld together, described spoke week wall thickness diminish gradually to the other end from one end that same spoke end wall connects.
The present invention has following advantage: expand making first and directly then form wheel rim by the mode extended out through being less than standard-sized wheel rim blank, namely the circularity of wheel rim inner peripheral surface can be made to meet the requirements without the need to being undertaken shaping by mould in wheel rim in the course of processing, the comfort feature adding man-hour can be improved; Wheel rim and spoke steel make and more than heating temperatures to the Ac3 temperature of material, carry out the shaping and thinning design of spoke perisporium, laborsaving time not only shaping; And the hardness of wheel reaches about HRC52, its tensile strength reaches 1300Mpa ~ 1500MPa; Thus the reduction of wheel weight can be realized when ensureing wheel strength.
Accompanying drawing explanation
Fig. 1 is the flow scheme of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the wheel rim substrate produced in the embodiment of the present invention one.
Fig. 3 is the schematic diagram of the band gap pipe produced in the embodiment of the present invention one.
Fig. 4 is the schematic diagram of the band gap flat tube produced in the embodiment of the present invention one.
Fig. 5 is the schematic diagram of the closed flat tube produced in the embodiment of the present invention one.
Fig. 6 is closed flat tube in the embodiment of the present invention one schematic diagram when removing radial welding slag.
Fig. 7 is closed flat tube in the embodiment of the present invention one schematic diagram when removing axial welding slag.
Fig. 8 is the schematic diagram of the closed pipe that the present invention produces.
Fig. 9 is the cross-sectional schematic with bell-mouthed closed pipe produced in the embodiment of the present invention one.
Figure 10 is the schematic diagram of the wheel rim blank produced in the embodiment of the present invention one.
Figure 11 is the schematic diagram with the wheel rim blank of the plane for offering valve port produced in the embodiment of the present invention one.
Figure 12 is the schematic diagram with the wheel rim of valve port produced in the embodiment of the present invention one
Figure 13 is the schematic diagram of the spoke substrate produced in the embodiment of the present invention one.
Figure 14 is the schematic diagram of the wheel in embodiment one.
Figure 15 is E-E cross-sectional schematic of Figure 14.
Figure 16 is the close-up schematic view at the D place of Figure 15.
In figure: wheel rim substrate 1, the termination 11 of wheel rim substrate, band gap pipe 2, butt seam 21, band gap flat tube 3, closed flat tube 4, weld seam 41, the welding slag 411 of radial both sides, the welding slag 412 of axial both sides, closed pipe 5, exit skirt 51, bell-mouthed free end 511, wheel rim blank 6, wheel rim 61, for offering the plane 62 of valve port, wheel rim 7, valve port 71, spoke substrate 8, auxiliary hole 81, liner plate 82, groove 83, gas spring chamber 84, protruding 85, spoke 9, spoke perisporium 91, the end face 911 of spoke perisporium bigger diameter end, outer lug 912, convex closure 913, inside recess 914, spoke end wall 92, the space 93 that spoke surrounds, centre hole 94, bolt hole 95, air holes 96, weld nugget 97.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, see Fig. 1, a kind of thermoforming wheel method for making, comprises making wheel rim operation, making spoke operation is connected operation with rim and spoke.
Make wheel rim operation and comprise following making step:
A1, shaping wheel rim pipe: the closed pipe namely producing circumferential closure with steel plate.Specifically comprise:
A1-1, shaping wheel rim substrate: process the wheel rim substrate 1(of bar shaped schistose texture see Fig. 2 by steel plate).Also under the condition of dry or immersion oil, pickling is carried out to wheel rim substrate 1 surface in this step, thus play the effect of the welding effect promoted in subsequent soldering processes.
A1-2, forming strip gap pipe: wheel rim substrate 1 is rolled into there is butt seam 21 band gap pipe 2(see Fig. 3).Butt seam 21 for the gap (in Fig. 3 being namely) circumferentially disconnected, also can be able to be gap radially, overlap when namely wheel rim substrate 1 is curling.
A1-3, forming strip gap flat tube: by two of wheel rim substrate wheel rim substrate terminations 11 by arcuate structure complanation structure, making band gap pipe become butt seam 21 place is that the band gap flat tube 3(of planar structure is see Fig. 4);
A1-4, shaping closed flat tube: two of wheel rim substrate wheel rim substrate termination 11 weld togethers are formed weld seam 41 at butt seam place, make band gap flat tube become the closed flat tube 4(of circumferential closure see Fig. 5).Steel plate in steps A 1 is dead annealed steel plate, when steps A 1-4 can be made to weld with the adjacent heat affected zone hardness in weld zone higher than the hardness of steel plate making spoke, thus comfort feature when can improve subsequent job.The detailed process of welding is: butt seam 21 place is heated to applicable plastic deformation and temperature lower than the Ac3 temperature of material, then carry out upset and realize linking together, the two ends of upset and blank are pressed together suddenly and end are merged and ejecting outside the plane of mother metal to the part material material of welding zone, then weld seam 41 is incubated, to reduce the rate of cooling of weld seam 41.This welding manner can be avoided weld seam 41 much higher hard and affect follow-up fourth contact.
The welding slag of a2, removing commissure.Specifically comprise
A2-1, the welding slag 411 of weld seam 41 along the radial both sides of closed flat tube 4 to be removed (see Fig. 6).
A2-2, the welding slag 412 of weld seam 41 along the axial both sides of closed flat tube 4 to be removed (see Fig. 7).
A1-5, shaping closed pipe: weld seam 41 place of closed flat tube is become arcuate structure by planar structure, make closed flat tube become closed pipe 5(see Fig. 8).Weld seam slag be weld seam temperature or higher than room temperature namely or heat time remove, be convenient to removing like this and planeness is good.
A2, shaping wheel rim blank: closed circle control is made the wheel rim blank that diameter is less than rim design diameter.Specifically comprise
A2-1, the shaping exit skirt of outer expansion: the axial two ends of closed pipe 5 are all radially expanded formation two exit skirt 51(see Fig. 9).
A2-2, interior expansion is formed has the wheel rim of wheel rim: two bell-mouthed free ends 511 and closed pipe are all radially inwardly expanded and obtained diameter is less than the wheel rim blank 6 of rim design diameter and is formed on exit skirt along the radially outward protruding wheel rim 61(of wheel rim blank see Figure 10).
A1, offer valve port plane is set: the position arranging valve port at wheel rim blank 6 extrudes for offering the plane 62(of valve port see Figure 11).
A3, heating wheel rim blank: wheel rim blank be heated to more than the Ac3 temperature of the material making wheel rim blank and form hot wheel rim blank.
A4, shaping wheel rim: hot wheel rim blank is radially expanded to and cools again after diameter reaches the intended diameter of wheel rim and form wheel rim.The cooling detailed process of this step is: be cooled to 200 DEG C of +/-25 DEG C in spreading pressure machine (equipment for existing making wheel) after, then shifts out and naturally cool in atmosphere.This cooling method is conducive to accelerating hydrogen and diffuses out from metal, thus avoids hydrogen embrittlement, and the quality of hydrogen embrittlement to wheel is harmful.
A5, shaping valve port: wheel rim 7 for offer valve port plane 62 on give vent to anger aperture of door 71(see Figure 12 by laser beam cutting).
Make spoke operation and comprise following making step:
The spoke substrate of B1, forming strip auxiliary hole: the spoke substrate 8 being processed circular sheet-like structures by steel plate, processes auxiliary hole 81(see Figure 13 at the center of spoke substrate 8).
B2, heating spoke substrate: wheel rim substrate 8 be heated to more than the Ac3 temperature of the material making spoke substrate and be heated to spoke substrate and liner plate microstructure is converted into austenite and forms hot spoke substrate.
B3, shaping spoke: the axis along hot spoke substrate is carried out punching press and shape and comprised the spoke perisporium 91 of taper and be connected to the spoke 9 of spoke end wall 92 of spoke perisporium miner diameter end, and carry out round as a ball to spoke perisporium 91 and make spoke all wall thickness trailing wheel spoke end wall places end start to diminish gradually to the other end, and then spoke is made to cool (see Figure 15).The cooling detailed process of this step is: be cooled to 200 DEG C of +/-25 DEG C in spreading pressure machine (equipment for existing making wheel) after, then shift out carry out round as a ball and in atmosphere naturally cool.This cooling method is conducive to accelerating hydrogen and diffuses out from metal, thus avoids hydrogen embrittlement, and the quality of hydrogen embrittlement to wheel is harmful.
See Figure 14, in punch forming process, also on the outside face of spoke perisporium 91, be provided with inside recess 914 and outer lug 912.Inside recess 914 and outer lug 922 are alternately distributed along spoke 9 circumference.The position of the corresponding inside recess 9141 of spoke 9 inside face is internal projection (being also that inside recess 914 is for being formed towards spoke is inner along exhibition while of spoke perisporium surfaces externally and internally).The position of the corresponding outer lug 912 of spoke 9 inside face is outer pit (being also that outer lug 912 is for the mode that spoke perisporium surfaces externally and internally stretches towards spoke outside and formed as passed through punching press is along exhibition simultaneously).Each inside recess 914 and outer lug 912 place are respectively provided with and project through towards spoke outside (namely vertical paper is outside in figure) convex closure 913 that impact style processes.
B2, the shaping spoke welding end conical surface: the end face 911 of spoke perisporium bigger diameter end is processed into the conical surface (see Figure 15) being positioned at the space 93 that spoke surrounds.
B4, spoke perforate: auxiliary hole 81 carried out open up expansion and form the centre hole 94 be positioned on spoke end wall 92, spoke end wall 92 is offered setting quantity bolt hole 95(the present embodiment in be 10), bolt hole 95 centrally hole 94 circumference distribution, spoke perisporium 91 is offered 10 along spoke 9 circumference distribution air holes 96.Air holes 96 is arranged on the top (see Figure 14) of convex closure 913 correspondingly.Air holes, centre hole and bolt hole are all formed by laser beam cutting.Laser cutting parameter is selected to be that the tiny crack cutting hole or punching can cause the reduction greatly of spoke performance and uncertain fatigue characteristic, then can avoid through laser beam cutting because the wheel of the method making is very high to the susceptibility of microcrack.
Rim and spoke connects operation and comprises following making step:
C1, by wheel rim 7 cover be set to spoke perisporium 91 bigger diameter end (see Figure 15).
C2, by spoke perisporium 91 and wheel rim 7 weld together (see Figure 15).
See Figure 16, be interference fit between the bigger diameter end of spoke perisporium 91 and wheel rim 7.The magnitude of interference between spoke perisporium 91 and wheel rim 7 is 0.5 millimeter to 2.5 millimeters.Too little interference fit can cause the premature failure of attachment weld, and too large interference fit can cause assembling difficulty and cause wheel rim bead seat relative to the radial runout in wheel center hole.
The weld nugget 97 formed when welding spoke perisporium 91 and wheel rim 7 is positioned at the Fit of wheel rim and spoke perisporium.
The preferred laser beam welding of welding of spoke and wheel rim.In this step, the detailed process of laser beam welding is: laser beam is parallel to wheel rim axis and contains the joint of spoke and wheel rim.This welding manner can reduce the softening of the heat affected zone of weld nugget and weld the Wheel deflection caused.The distortion of wheel can affect the homogeneity of wheel and make it not by the welcome of client.
Namely after wheel rim is shaping after steps A 4 and also need to carry out wheel rim pickling before being linked together with spoke by wheel rim and remove oxide surface layer.Namely after wheel rim is shaping after step B3 and also need to carry out spoke pickling before being linked together with spoke by wheel rim and remove oxide surface layer.The existence of oxide coating can affect follow-up technique as welding, increase coating etc.Pickling scale removal does not cause minimizing so that the distortion of spoke wheel rim stress.Preferred organic acidity, the defect of organic acidity hydrogen embrittlement can be significantly improved.
In above embodiment can be existing then a kind of steel plate for making the steel plate of wheel rim and spoke, and just AC3 temperature is different, but preferred boron alloyed steel, and can realize lightweight better, the AC3 temperature of boron alloyed steel is 950 DEG C.
Claims (10)
1. a thermoforming wheel method for making, comprises making wheel rim operation, making spoke operation is connected operation with rim and spoke, it is characterized in that,
Described making wheel rim operation comprises following making step:
A1, shaping wheel rim pipe: the closed pipe producing circumferential closure with steel plate;
A2, shaping wheel rim blank: closed circle control is made the wheel rim blank that diameter is less than rim design diameter;
A3, heating wheel rim blank: wheel rim blank is heated to more than the Ac3 temperature of the material making wheel rim blank and is heated to wheel rim blank microstructure and be converted into austenite and form hot wheel rim blank;
A4, shaping wheel rim: hot wheel rim blank is radially expanded to and cools again after diameter reaches the intended diameter of wheel rim and form wheel rim;
Described making spoke operation comprises following making step:
The spoke substrate of B1, forming strip auxiliary hole: the spoke substrate being processed circular sheet-like structures by steel plate, processes auxiliary hole at the center of spoke substrate;
B2, heating spoke substrate: will more than wheel rim base plate heating to the Ac3 temperature of the material of making spoke substrate be heated to spoke substrate microstructure and be converted into austenite and form hot spoke substrate;
B3, shaping spoke: the axis along hot spoke substrate is carried out punching press and shape and comprised the spoke perisporium of taper and be connected to the spoke of spoke end wall of spoke perisporium miner diameter end, and carry out round as a ball to spoke perisporium and make spoke all wall thickness trailing wheel spoke end wall places end start to diminish gradually to the other end, and then spoke is cooled;
Described rim and spoke connects operation and comprises following making step:
C1, wheel rim cover is set on spoke perisporium bigger diameter end;
C2, by spoke perisporium and wheel rim weld together.
2. thermoforming wheel method for making according to claim 1, is characterized in that, also comprises step a1, offers valve port and arrange plane between steps A 2 and steps A 3: extrude the plane for offering valve port at the position that wheel rim blank arranges valve port.
3. thermoforming wheel method for making according to claim 1, it is characterized in that, steps A 2 comprises the following steps:
A2-1, the shaping exit skirt of outer expansion: formation exit skirt is radially expanded at the axial two ends of closed pipe;
A2-2, interior expansion is formed has the wheel rim of wheel rim: bell-mouthed free end and closed pipe are all radially inwardly expanded and obtained diameter be less than rim design diameter wheel rim blank, formed on described exit skirt when expanding along the radially outward protruding wheel rim of wheel rim blank.
4. thermoforming wheel method for making according to claim 1, it is characterized in that, steps A 1 comprises the following steps:
A1-1, shaping wheel rim substrate: the wheel rim substrate being processed bar shaped schistose texture by steel plate;
A1-2, forming strip gap pipe: wheel rim substrate is rolled into the band gap pipe with butt seam;
A1-3, forming strip gap flat tube: by the two ends of wheel rim substrate by arcuate structure complanation structure, make band gap pipe become the band gap flat tube that butt seam place is planar structure;
A1-4, shaping closed flat tube: the two ends weld together of wheel rim substrate is formed weld seam at butt seam place, make to be with gap flat tube to become the closed flat tube of circumferential closure;
A1-5, shaping closed pipe: the commissure of closed flat tube is become arcuate structure by planar structure, make closed flat tube become closed pipe.
5. thermoforming wheel method for making according to claim 4, is characterized in that, also comprises the welding slag of step a2, removing commissure between steps A 1-4 and steps A 1-5.
6. thermoforming wheel method for making according to claim 5, it is characterized in that, step a2 comprises the following steps:
A2-1, by the welding slag removing of weld seam along the radial both sides of closed flat tube;
A2-2, by the welding slag removing of weld seam along the axial both sides of closed flat tube.
7. the thermoforming wheel method for making according to claim 1 or 2 or 3 or 4 or 5 or 6, it is characterized in that, between step B3 and step C1, also comprise step b2, the shaping spoke welding end conical surface: the end face of spoke perisporium bigger diameter end is processed into the conical surface being positioned at the interior volume that spoke surrounds.
8. the thermoforming wheel method for making according to claim 1 or 2 or 3 or 4 or 5 or 6, is characterized in that, is interference fit between the bigger diameter end of spoke perisporium and wheel rim in step C1.
9. thermoforming wheel method for making according to claim 8, it is characterized in that, the weld nugget formed in step C2 is positioned at the Fit of wheel rim and spoke perisporium.
10. a thermoforming wheel, comprise wheel rim and spoke, it is characterized in that, described spoke and wheel rim are all steel structure and by being heated to reshaping after Ac3 temperature, described spoke comprises spoke perisporium and spoke end wall, one end of described spoke perisporium links together in the mode of integrative-structure with described spoke end wall, the other end of described spoke perisporium with described wheel rim weld together, described spoke week wall thickness diminish gradually to the other end from one end that same spoke end wall connects.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106378397A (en) * | 2016-08-31 | 2017-02-08 | 浙江金固股份有限公司 | Thermoforming process for wheel rim |
| CN106583963A (en) * | 2017-01-06 | 2017-04-26 | 中国汽车工程研究院股份有限公司 | Technology method for prolonging fatigue life of steel passenger car wheel |
| CN108349299A (en) * | 2015-11-26 | 2018-07-31 | 宝马股份公司 | Wheel of vehicle with the covering element for spoke gap |
| EP3610983A4 (en) * | 2017-04-12 | 2020-03-25 | Zhejiang Jingu Co., Ltd. | Manufacturing method for wheel rim, spokes and steel wheel, and steel wheel manufactured using said method |
| CN110977453A (en) * | 2019-12-19 | 2020-04-10 | 佛山市铭柯智能设备科技有限公司 | Wheel hub assembly line |
| CN115194415A (en) * | 2022-08-09 | 2022-10-18 | 中新(重庆)超高强材料研究院有限公司 | Manufacturing method of ultrahigh-strength lightweight commercial vehicle steel wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108349299A (en) * | 2015-11-26 | 2018-07-31 | 宝马股份公司 | Wheel of vehicle with the covering element for spoke gap |
| CN106378397A (en) * | 2016-08-31 | 2017-02-08 | 浙江金固股份有限公司 | Thermoforming process for wheel rim |
| CN106583963A (en) * | 2017-01-06 | 2017-04-26 | 中国汽车工程研究院股份有限公司 | Technology method for prolonging fatigue life of steel passenger car wheel |
| CN106583963B (en) * | 2017-01-06 | 2018-11-20 | 中国汽车工程研究院股份有限公司 | A kind of process promoting the steel passenger car Wheel Fatigue service life |
| EP3610983A4 (en) * | 2017-04-12 | 2020-03-25 | Zhejiang Jingu Co., Ltd. | Manufacturing method for wheel rim, spokes and steel wheel, and steel wheel manufactured using said method |
| US11633777B2 (en) | 2017-04-12 | 2023-04-25 | Zhejiang Jingu Co., Ltd. | Manufacturing methods for wheel rim, spoke and steel wheel and steel wheel formed by methods |
| CN110977453A (en) * | 2019-12-19 | 2020-04-10 | 佛山市铭柯智能设备科技有限公司 | Wheel hub assembly line |
| CN115194415A (en) * | 2022-08-09 | 2022-10-18 | 中新(重庆)超高强材料研究院有限公司 | Manufacturing method of ultrahigh-strength lightweight commercial vehicle steel wheel |
| CN115194415B (en) * | 2022-08-09 | 2023-09-05 | 中新(重庆)超高强材料研究院有限公司 | Manufacturing method of ultrahigh-strength light commercial vehicle steel wheel |
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| CN104589910B (en) | 2017-02-22 |
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