CN103909342B - Connecting method for two-piece type hub - Google Patents
Connecting method for two-piece type hub Download PDFInfo
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- CN103909342B CN103909342B CN201410116433.3A CN201410116433A CN103909342B CN 103909342 B CN103909342 B CN 103909342B CN 201410116433 A CN201410116433 A CN 201410116433A CN 103909342 B CN103909342 B CN 103909342B
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- Prior art keywords
- welding
- rim
- wheel disc
- piece type
- wheel
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Classifications
-
- 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, the method for attachment of a kind of two-piece type wheel hub.
Background technology
Magnesium alloy as the lightest engineering metal material, its density only have steel 1/4, the 2/3 of aluminum, specific strength, ratio
Rigidity is high, electromagnetic wave shielding is good and damping characteristics is good, and under the background of automotive light weight technology, magnesium alloy is increasingly
How to be applied in auto industry.Research finds, automotive dead weight often alleviates 10%, and its fuel oil consumption can reduce 6%-8%,
And according to measuring and calculating, the benefit of wheel hub loss of weight is more than 5 times of automobile loss of weight.
At present, magnesium alloy hub manufacture mainly has casting and forging two kinds.Forged hub intensity is high but technique is multiple
Miscellaneous, cost is the highest；Casting method technique is simple, but interior tissue is easy to, and appearance is loosened, is mingled with, pore etc. lacks
Falling into, the mechanical property causing wheel hub is poor.When low pressure casting magnesium alloy hub, molten metal is generally at core wheel
Cast gate starts cast, causes spoke and wheel rim junction to fill insufficient due to molten metal and produce shrinkage cavity phenomenon.For
Improving magnesium alloy hub performance, the patent of invention of Patent No. 201310129522.7 be " a kind of magnesium alloy hub
Preparation method " propose a kind of extrusion casint and the method for forging combination, Patent No. 201310234815.1
A kind of method that patent of invention " magnesium alloy hub composite forming method " puts forward extruding, forging adds spinning, these
Although method solves the defect of casting hub, but technological process is relative complex, the most fundamentally solves magnesium alloy
The problem that wheel hub global formation is difficult.
In the production of aluminium alloy wheel hub, patent of invention " a kind of manufacture aluminum of Patent No. 200910130881.8
The car body formed by friction stir welding of alloy automobile wheel hub " propose the friction rabbling welding side of a kind of two-piece type aluminium alloy wheel hub
Method, by the front rim manufactured respectively and rear rim girth welding molding.This method front rim remains with spoke to be adopted
With compression casting, and need to rotate wheel hub clamping with axle for enabling wheel hub to move in a circle when welding
Fixture on, owing to the running orbit of girth welding is an arc surface, welding process needs to whole arc surface
Weld seam provides support force, and weld jig proposes higher requirement.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide a kind of two-piece type wheel hub method of attachment.
The present invention is achieved by the following technical solutions:
The present invention provides the method for attachment of a kind of two-piece type wheel hub, comprises the following steps:
Step one, wheel disc low pressure casting, rim surface spinning manufactures；
Step 2, polishes the part to be welded pretreatment of described wheel rim and described wheel disc, by described wheel disc and wheel rim
Clamping is at the frock clamp of friction stir welding apparatus (FSW-08 that Shanghai Putuo Numerical Control Technology Co., Ltd. produces)
On, stirring-head high speed rotating is inserted into the starting point of circle seam, carries out justifying seam welding along circle seam is mobile；
Step 3, after circle seam welding terminates, mixing needle is gradually regained, and forms the weld seam without keyhole.
Preferably, the object of described round seam welding is magnesium alloy or the aluminium alloy of different processing technique.
Preferably, the mode of described round seam welding specifically use can pumpback mixing needle eliminate keyhole flat circle seam welding.
Preferably, the circle seam that the position of described round seam welding is positioned between wheel rim and spoke.
Preferably, described stirring-head be shaped as the threaded circular taper mixing needle that concave shoulder inclination angle is 5 °.
Preferably, the rotary speed of described stirring-head is 800-1200r/min, and the speed of circle seam welding is
50-200mm/min, the insertion of described mixing needle and pumpback speed are 15-20mm/min.
Preferably, the thickness in the portion to be welded of described wheel rim and described wheel disc is 8mm.
Compared with prior art, the present invention has a following beneficial effect:
(1) the inventive method uses and manufactures into two pieces for wheel hub, reduces the difficulty of wheel hub global formation, product
Qualification rate can increase substantially；
(2) inner rim portion that the inventive method uses is owing to having the strongest versatility, and structural complexity is the least,
Extensive forming technology (such as rotation casting) can be taked to substitute traditional low pressure casting produce, thus be greatly lowered
The manufacturing cost of wheel rim；
(3) in the inventive method wheel sections opposed configuration simplify, use low-pressure casting method qualification rate can more added with
Ensure；
(4) the inventive method uses friction rabbling welding wheel rim and wheel disc to be welded, and the performance at welding point reaches mother metal
More than 90%.
Accompanying drawing explanation
The detailed description made non-limiting example with reference to the following drawings by reading, other of the present invention is special
Levy, purpose and advantage will become more apparent upon:
Fig. 1 is the wheel rim in the present invention and wheel disc schematic diagram；
Fig. 2 is the inventive method hub plane 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 example will assist in those skilled in the art
Member is further appreciated by the present invention, but limits the present invention the most in any form.It should be pointed out that, the common skill to this area
For art personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into
Protection scope of the present invention.
Embodiment 1
The present embodiment relates to the method for attachment of a kind of two-piece type wheel hub, comprises the following steps:
Step one, the present embodiment employing NZ30K magnesium alloy is as the manufacture material of 14 cun of automotive hubs, by wheel hub
Entirety is split as two parts and manufactures respectively, wheel disc low pressure casting, and rim surface spinning manufactures, as it is shown in figure 1, institute
State wheel hub and include wheel rim 2 and wheel disc 1 two parts, wheel rim 2 and wheel disc 1 part to be welded pretreatment are polished, welding
The thickness of part is 8mm；
Step 2, aligns clamping at friction stir welding apparatus by described wheel disc 1 and wheel rim 2 along welding circular trace
On the frock clamp of (FSW-08 that Shanghai Putuo Numerical Control Technology Co., Ltd. produces), as in figure 2 it is shown, welding rail
Mark is the planar circumferential that wheel disc docks with wheel rim.During welding, wheel hub two parts are fixed on the frock clamp of movable working platform
On, stirring-head (such as Fig. 3, stirring-head be shaped as the threaded circular taper mixing needle that concave shoulder inclination angle is 5 °) with
The high speed rotating of 1200rpm is inserted into the starting point of circle seam 5, and the insertion depth of stirring-head is 7.7mm, wheel disc 1 He to be welded
It is 200mm/min circular motion that wheel rim 2 does linear velocity with movable working platform, and employing can work as circular weld joint by pumpback stirring-head
Weld rear stirring-head gradually to extract out to eliminate keyhole；
Step 3, takes off the wheel hub welded from workbench, and the upper and lower surface of weld seam is machined polishing, and wheel hub is carried out
Aging treating after welding.
Implementation result: the present embodiment wheel hub carries out aging treating after welding, the yield strength of wheel disc is 120MPa, tensile strength
200MPa, elongation percentage 15%, yield strength 130MPa of weld seam, tensile strength 185MPa, elongation percentage 14%, after timeliness
The comprehensive mechanical property of weld seam reaches more than the 90% of mother metal.
Embodiment 2
The present embodiment relates to the method for attachment of a kind of two-piece type wheel hub, comprises the following steps: combine shown in Fig. 1,2,3:
Step one, the present embodiment employing NZ30K magnesium alloy is as the manufacture material of 17 cun of automotive hubs, and wheel hub is overall
Being split as two parts to manufacture respectively, wheel disc low pressure casting, rim surface spinning manufactures, as it is shown in figure 1, described wheel hub
Including wheel rim 2 and wheel disc 1 two parts, wheel rim and wheel disc part to be welded pretreatment being polished, the thickness of welding portion is
8mm；
Step 2, by described wheel disc 1 and wheel rim 2 along welding circular trace alignment clamping friction stir welding apparatus (on
The FSW-08 that Hai Tuopu numerical control Science and Technology Ltd. produces) frock clamp on, as in figure 2 it is shown, welding track is wheel disc
The planar circumferential docked with wheel rim.During welding, wheel hub two parts are fixed on the frock clamp of movable working platform, stirring-head
(such as Fig. 3, stirring-head be shaped as the threaded circular taper mixing needle that concave shoulder inclination angle is 5 °) is with the height of 800rpm
Speed is rotatably inserted into the starting point of circle seam 5, and the insertion depth of stirring-head is 7.7mm, and wheel disc 1 to be welded and wheel rim 2 are with moving
It is 50mm/min circular motion that station of starting building does linear velocity, and employing can be stirred by pumpback stirring-head after welding circular weld joint completes
Mix head gradually to extract out to eliminate keyhole；
Step 3, takes off the wheel hub welded from workbench, and the upper and lower surface of weld seam is machined polishing, and wheel hub is carried out
Aging treating after welding.
Implementation result: the present embodiment wheel hub carries out aging treating after welding, the yield strength of wheel disc is 120MPa, tensile strength
200MPa, elongation percentage 15%, yield strength 132MPa of weld seam, tensile strength 180MPa, elongation percentage 14%, after timeliness
The comprehensive mechanical property of weld seam reaches more than the 90% of mother metal.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in
Stating particular implementation, those skilled in the art can make various deformation or amendment within the scope of the claims,
This has no effect on the flesh and blood of the present invention.
Claims (4)
1. the method for attachment of a two-piece type wheel hub, it is characterised in that comprise the following steps:
Step one, wheel disc low pressure casting, rim surface spinning manufactures；
Step 2, polishes the part to be welded pretreatment of described wheel rim and described wheel disc, described wheel disc and wheel rim is filled
Being clipped on the frock clamp of friction stir welding apparatus, stirring-head high speed rotating is inserted into the starting point of circle seam, mobile along circle seam
Carry out justifying seam welding；
Step 3, after circle seam welding terminates, mixing needle is gradually regained, and forms the weld seam without keyhole；
The rotary speed of described stirring-head is 800-1200r/min, and the speed of circle seam welding is 50-200mm/min, described
The insertion of mixing needle and pumpback speed are 15-20mm/min；
In step 2, during welding, described wheel disc and wheel rim be axially perpendicular to horizontal direction, described wheel rim inwall is provided with
The projection of radial direction, welding track is the protruding planar circumferential docked of wheel disc and wheel rim.
The method of attachment of two-piece type wheel hub the most according to claim 1, it is characterised in that described round seam welding
Object is magnesium alloy or the aluminium alloy of different processing technique.
The method of attachment of two-piece type wheel hub the most according to claim 1, it is characterised in that described round seam welding
Mode specifically use can pumpback mixing needle eliminate keyhole flat circle seam welding.
The method of attachment of two-piece type wheel hub the most according to claim 1, it is characterised in that described round seam welding
The circle seam that position is positioned between wheel rim and spoke.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909342A CN103909342A (en) | 2014-07-09 |
| CN103909342B true CN103909342B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410116433.3A Active CN103909342B (en) | 2014-03-26 | 2014-03-26 | Connecting method for two-piece type hub |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3030370B1 (en) | 2014-12-17 | 2018-04-20 | Saint Jean Industries | METHOD FOR MANUFACTURING A HYBRID WHEEL IN TWO LIGHT ALLOY PARTS ESPECIALLY ALUMINUM INCLUDING EVIDENCE IN ONE OF THE PNEUMATIC HEEL SEATS |
| CN104772563B (en) * | 2015-04-24 | 2017-05-24 | 浙江理工大学 | Method for manufacturing automobile aluminum alloy hub |
| CN107775182B (en) * | 2016-08-29 | 2020-05-22 | 上海交通大学 | Preparation method and structure of screw hole structure for preventing 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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|---|---|---|---|---|
| CN101157156A (en) * | 2007-11-13 | 2008-04-09 | 江苏科技大学 | A soldering set for agitating friction welding |
| CN101214605A (en) * | 2008-01-14 | 2008-07-09 | 张新颖 | Hub manufacturing technology |
| CN101518850A (en) * | 2009-04-22 | 2009-09-02 | 哈尔滨工业大学 | Stirring friction welding tool capable of welding with rolling |
| JP2010076464A (en) * | 2008-09-24 | 2010-04-08 | Chuo Motor Wheel Co Ltd | Motor vehicle wheel |
| CN202935087U (en) * | 2012-11-15 | 2013-05-15 | 刘湘平 | Hollow composite hub |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101530948A (en) * | 2009-04-17 | 2009-09-16 | 中国航空工业第一集团公司北京航空制造工程研究所 | A friction stir welding method for manufacturing aluminum alloy automobile hubs |
| CN102294575A (en) * | 2011-08-19 | 2011-12-28 | 苏竞 | Manufacturing method of light vehicle aluminium alloy hubs |
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2014
- 2014-03-26 CN CN201410116433.3A patent/CN103909342B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157156A (en) * | 2007-11-13 | 2008-04-09 | 江苏科技大学 | A soldering set for agitating friction welding |
| CN101214605A (en) * | 2008-01-14 | 2008-07-09 | 张新颖 | Hub manufacturing technology |
| JP2010076464A (en) * | 2008-09-24 | 2010-04-08 | Chuo Motor Wheel Co Ltd | Motor vehicle wheel |
| CN101518850A (en) * | 2009-04-22 | 2009-09-02 | 哈尔滨工业大学 | Stirring friction welding tool capable of welding with rolling |
| CN202935087U (en) * | 2012-11-15 | 2013-05-15 | 刘湘平 | Hollow composite hub |
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| Publication number | Publication date |
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| CN103909342A (en) | 2014-07-09 |
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