CN103909342A - Connecting method for two-piece type hub - Google Patents
Connecting method for two-piece type hub Download PDFInfo
- Publication number
- CN103909342A CN103909342A CN201410116433.3A CN201410116433A CN103909342A CN 103909342 A CN103909342 A CN 103909342A CN 201410116433 A CN201410116433 A CN 201410116433A CN 103909342 A CN103909342 A CN 103909342A
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- China
- Prior art keywords
- welding
- piece type
- rim
- wheel hub
- attachment
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a connecting method for a two-piece type hub. The connecting method includes the following steps: firstly, subjecting a wheel disc to low-pressure casting, and subjecting the surface of a rim to spinning manufacturing; secondly, performing pretreatment polishing on to-be-welded parts of the rim and the wheel disc, clamping the wheel disc and the rim on a work fixture of friction stir welding equipment, inserting a stir-welding head into a starting point of a round joint by high-speed rotation, and moving the stir-welding head along the round joint to perform round joint welding; thirdly, after round joint welding is finished, gradually retracting a stir-welding pin to form a welded joint without a keyhole. Planar round joint welding formation of the two-piece type hub is completed, and the two-piece type hub is formed by welding of the low-pressure cast wheel disc and the spun rim. Compared with an integrated forming method of the hub, the connecting method is lower in manufacturing difficulty, higher in qualified rate of products and cost saving.
Description
Technical field
The invention belongs to field of automobile, especially a kind of method of attachment of two-piece type wheel hub.
Background technology
Magnesium alloy is as the lightest engineering metal material, and its density only has 2/3 of steel 1/4, aluminium, and specific strength, specific stiffness is high, electromagnetic wave shielding good and damping characteristics is good, and under the background of automotive light weight technology, magnesium alloy is applied in auto industry more and more.Research discovery, automotive dead weight often alleviates 10%, and its fuel consume can reduce 6%-8%, and according to measuring and calculating, the benefit of wheel hub loss of weight is the more than 5 times of automobile loss of weight.
At present, magnesium alloy hub manufacture mainly contains casting and forges two kinds.High but the complex process of forged hub intensity, cost is very high; Casting method technique is simple, but the defect such as interior tissue is easy to occur loosening, is mingled with, pore causes the mechanical property of wheel hub poor.In the time of low pressure casting magnesium alloy hub, molten metal starts cast from the cast gate of core wheel conventionally, causes spoke and wheel rim junction because molten metal is filled insufficient shrinkage cavity phenomenon that produces.For improving magnesium alloy hub performance, the patent No. is that 201310129522.7 patent of invention " a kind of preparation method of magnesium alloy hub " has proposed a kind of extrusion casint and forged the method for combination, the patent No. is that 201310234815.1 patent of invention " magnesium alloy hub composite forming method " puts forward a kind of extruding, forges the method that adds spinning, although these methods have solved the defect of casting hub, but technological process relative complex, does not fundamentally solve the problem of magnesium alloy hub global formation difficulty.
In the production of aluminium alloy wheel hub, the patent No. is the car body formed by friction stir welding that 200910130881.8 patent of invention " a kind of car body formed by friction stir welding of manufacturing aluminium alloy automobile hub " has proposed a kind of two-piece type aluminium alloy wheel hub, by front rim and the rear rim girth welding moulding of manufacturing respectively.This method front rim and spoke remain employing compression casting, and when welding be wheel hub can be moved in a circle need to be by wheel hub clamping on the fixture that can rotate with axle, because the running orbit of girth welding is an arc surface, in welding process, need whole arc surface weld seam to provide support power, weld jig has been proposed to higher requirement.
Summary of the invention
For defect of the prior art, the object of this invention is to provide the method for attachment of a kind of two-piece type wheel hub.
The present invention is achieved by the following technical solutions:
The invention provides a kind of method of attachment of two-piece type wheel hub, comprise the following steps:
Step 1, wheel disc low pressure casting, rim surface spinning is manufactured;
Step 2, by the part pretreatment polishing to be welded of described wheel rim and described wheel disc, by described wheel disc and wheel rim clamping on the frock clamp of friction stir weld equipment (FSW-08 that Shanghai Putuo Numerical Control Technology Co., Ltd. produces), stirring-head High Rotation Speed is inserted into the starting point of circle seam, stitches the mobile seam welding of justifying along circle;
Step 3, after circle seam welding finishes, mixing needle is regained gradually, forms the weld seam without keyhole.
Preferably, the object of described round seam welding is different processing technologys magnesium alloy or aluminium alloy.
Preferably, the flat circle seam welding of keyhole can pumpback mixing needle be eliminated in the concrete employing of the mode of described round seam welding.
Preferably, the position of described round seam welding is positioned at the circle seam between wheel rim and spoke.
Preferably, the spill shaft shoulder inclination angle that is shaped as of described stirring-head is the threaded circular taper mixing needle of 5 °.
Preferably, the rotary speed of described stirring-head is 800-1200r/min, and the speed of circle seam welding is 50-200mm/min, and the insertion of described mixing needle and pumpback speed are 15-20mm/min.
Preferably, the thickness of the portion to be welded of described wheel rim and described wheel disc is 8mm.
Compared with prior art, the present invention has following beneficial effect:
(1) the inventive method adopts and wheel hub is divided into two manufactures, and has reduced the difficulty of whole wheel hub moulding, and product percent of pass can increase substantially;
(2) the wheel rim part that the inventive method adopts is owing to having very strong versatility, and structural complexity is also less, can take extensive forming technology (as revolving casting) to substitute traditional low pressure casting and produce, thereby significantly reduce the manufacturing cost of wheel rim;
(3) in the inventive method, take turns the relative designs simplification of disc portion, employing low-pressure casting method qualification rate can be more guaranteed;
(4) the inventive method adopts friction rabbling welding by wheel rim and wheel disc welding, and the performance at welding point place reaches the more than 90% of mother metal.
Brief description of the drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is wheel rim and the wheel disc schematic diagram in the present invention;
Fig. 2 is the inventive method wheel hub flat circle seam welding schematic diagram;
Fig. 3 is the stirring-head schematic diagram of friction rabbling welding.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
embodiment 1
The present embodiment relates to a kind of method of attachment of two-piece type wheel hub, comprises the following steps:
Step 1, the present embodiment adopts the manufactured materials of NZ30K magnesium alloy as 14 cun of automotive hubs, whole wheel hub is split as to two parts to be manufactured respectively, wheel disc low pressure casting, rim surface spinning is manufactured, and as shown in Figure 1, described wheel hub comprises wheel rim 2 and wheel disc 1 two parts, by wheel rim 2 and wheel disc 1 part pretreatment to be welded polishing, the thickness of welding portion is 8mm;
Step 2, described wheel disc 1 and wheel rim 2 are alignd to clamping on the frock clamp of friction stir weld equipment (FSW-08 that Shanghai Putuo Numerical Control Technology Co., Ltd. produces) along welding circular trace, as shown in Figure 2, welding track is the planar circumferential that wheel disc docks with wheel rim.When welding, wheel hub two parts are fixed on the frock clamp of movable working platform, stirring-head is (as Fig. 3, the spill shaft shoulder inclination angle that is shaped as of stirring-head is the threaded circular taper mixing needle of 5 °) be inserted into the starting point of circle seam 5 with the High Rotation Speed of 1200rpm, the insertion depth of stirring-head is 7.7mm, it is 200mm/min circular motion that wheel disc 1 to be welded and wheel rim 2 do linear velocity with movable working platform, and employing can extract to eliminate keyhole out by pumpback stirring-head stirring-head after welding circular weld joint completes gradually;
Step 3, takes off the wheel hub welding from workbench, by the upper and lower surface machined polishing of weld seam, wheel hub carries out postwelding Ageing Treatment.
Implementation result: the present embodiment wheel hub carries out postwelding Ageing Treatment, the yield strength of wheel disc is 120MPa, tensile strength 200MPa, percentage elongation 15%, yield strength 130MPa, the tensile strength 185MPa of weld seam, percentage elongation 14%, after timeliness, the comprehensive mechanical property of weld seam reaches the more than 90% of mother metal.
embodiment 2
The present embodiment relates to a kind of method of attachment of two-piece type wheel hub, comprises the following steps: shown in Fig. 1,2,3:
Step 1, the present embodiment adopts the manufactured materials of NZ30K magnesium alloy as 17 cun of automotive hubs, whole wheel hub is split as to two parts to be manufactured respectively, wheel disc low pressure casting, rim surface spinning is manufactured, and as shown in Figure 1, described wheel hub comprises wheel rim 2 and wheel disc 1 two parts, by wheel rim and wheel disc part pretreatment to be welded polishing, the thickness of welding portion is 8mm;
Step 2, described wheel disc 1 and wheel rim 2 are alignd to clamping on the frock clamp of friction stir weld equipment (FSW-08 that Shanghai Putuo Numerical Control Technology Co., Ltd. produces) along welding circular trace, as shown in Figure 2, welding track is the planar circumferential that wheel disc docks with wheel rim.When welding, wheel hub two parts are fixed on the frock clamp of movable working platform, stirring-head is (as Fig. 3, the spill shaft shoulder inclination angle that is shaped as of stirring-head is the threaded circular taper mixing needle of 5 °) be inserted into the starting point of circle seam 5 with the High Rotation Speed of 800rpm, the insertion depth of stirring-head is 7.7mm, it is 50mm/min circular motion that wheel disc 1 to be welded and wheel rim 2 do linear velocity with movable working platform, and employing can extract to eliminate keyhole out by pumpback stirring-head stirring-head after welding circular weld joint completes gradually;
Step 3, takes off the wheel hub welding from workbench, by the upper and lower surface machined polishing of weld seam, wheel hub carries out postwelding Ageing Treatment.
Implementation result: the present embodiment wheel hub carries out postwelding Ageing Treatment, the yield strength of wheel disc is 120MPa, tensile strength 200MPa, percentage elongation 15%, yield strength 132MPa, the tensile strength 180MPa of weld seam, percentage elongation 14%, after timeliness, the comprehensive mechanical property of weld seam reaches the more than 90% of mother metal.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1. a method of attachment for two-piece type wheel hub, is characterized in that, comprises the following steps:
Step 1, wheel disc low pressure casting, rim surface spinning is manufactured;
Step 2, by the part pretreatment polishing to be welded of described wheel rim and described wheel disc, by described wheel disc and wheel rim clamping, on the frock clamp of friction stir weld equipment, stirring-head High Rotation Speed is inserted into the starting point of circle seam, justifies seam welding along circle seam is mobile;
Step 3, after circle seam welding finishes, mixing needle is regained gradually, forms the weld seam without keyhole.
2. the method for attachment of two-piece type wheel hub according to claim 1, is characterized in that, the magnesium alloy that the object of described round seam welding is different processing technologys or aluminium alloy.
3. the method for attachment of two-piece type wheel hub according to claim 1, is characterized in that, the flat circle seam welding of keyhole can pumpback mixing needle be eliminated in the concrete employing of mode of described round seam welding.
4. the method for attachment of two-piece type wheel hub according to claim 1, is characterized in that, the position of described round seam welding is positioned at the circle seam between wheel rim and spoke.
5. the method for attachment of two-piece type wheel hub according to claim 1, is characterized in that, the spill shaft shoulder inclination angle that is shaped as of described stirring-head is the threaded circular taper mixing needle of 5 °.
6. the method for attachment of two-piece type wheel hub according to claim 1, is characterized in that, the rotary speed of described stirring-head is 800-1200r/min, and the speed of circle seam welding is 50-200mm/min, and the insertion of described mixing needle and pumpback speed are 15-20mm/min.
7. the method for attachment of two-piece type wheel hub according to claim 1, is characterized in that, the thickness of the portion to be welded of described wheel rim and described wheel disc is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116433.3A CN103909342B (en) | 2014-03-26 | 2014-03-26 | Connecting method for two-piece type hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116433.3A CN103909342B (en) | 2014-03-26 | 2014-03-26 | Connecting method for two-piece type hub |
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| Publication Number | Publication Date |
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| CN103909342A true CN103909342A (en) | 2014-07-09 |
| CN103909342B CN103909342B (en) | 2017-01-11 |
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| CN201410116433.3A Active CN103909342B (en) | 2014-03-26 | 2014-03-26 | Connecting method for two-piece type hub |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772563A (en) * | 2015-04-24 | 2015-07-15 | 浙江理工大学 | Method for manufacturing automobile aluminum alloy hub |
| CN107206837A (en) * | 2014-12-17 | 2017-09-26 | 圣让工业公司 | The manufacture method of light-alloy hybrid wheel including preceding wheel disc and wheel hub |
| CN107775182A (en) * | 2016-08-29 | 2018-03-09 | 上海交通大学 | Prevent the preparation method and its structure of the Screw hole structure of galvanic corrosion |
| CN108247289A (en) * | 2017-12-19 | 2018-07-06 | 六和轻合金（昆山）有限公司 | A kind of hollow friction welding (FW) wheel hub casting technique of two-piece type |
| CN112719566A (en) * | 2021-01-20 | 2021-04-30 | 昆山六丰机械工业有限公司 | Process method for improving performance of retractable friction stir welding joint |
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| JP2010076464A (en) * | 2008-09-24 | 2010-04-08 | Chuo Motor Wheel Co Ltd | Motor vehicle wheel |
| CN102294575A (en) * | 2011-08-19 | 2011-12-28 | 苏竞 | Manufacturing method of light vehicle aluminium alloy hubs |
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| CN101157156A (en) * | 2007-11-13 | 2008-04-09 | 江苏科技大学 | A soldering set for agitating friction welding |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107206837A (en) * | 2014-12-17 | 2017-09-26 | 圣让工业公司 | The manufacture method of light-alloy hybrid wheel including preceding wheel disc and wheel hub |
| CN107223088A (en) * | 2014-12-17 | 2017-09-29 | 圣让工业公司 | The manufacture method of light-alloy hybrid wheel including preceding wheel disc and wheel hub |
| US11338611B2 (en) | 2014-12-17 | 2022-05-24 | Saint Jean Industries | Method for manufacturing a light-alloy hybrid wheel including a front flange and a rim |
| CN104772563A (en) * | 2015-04-24 | 2015-07-15 | 浙江理工大学 | Method for manufacturing automobile aluminum alloy hub |
| CN107775182A (en) * | 2016-08-29 | 2018-03-09 | 上海交通大学 | Prevent the preparation method and its structure of the Screw hole structure of galvanic corrosion |
| CN108247289A (en) * | 2017-12-19 | 2018-07-06 | 六和轻合金（昆山）有限公司 | A kind of hollow friction welding (FW) wheel hub casting technique of two-piece type |
| CN112719566A (en) * | 2021-01-20 | 2021-04-30 | 昆山六丰机械工业有限公司 | Process method for improving performance of retractable friction stir welding joint |
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|---|---|
| CN103909342B (en) | 2017-01-11 |
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