CN106695261A - Compensation method for thinned area in thermal expansion molding process of lorry integrated drive axle - Google Patents
Compensation method for thinned area in thermal expansion molding process of lorry integrated drive axle Download PDFInfo
- Publication number
- CN106695261A CN106695261A CN201710028765.XA CN201710028765A CN106695261A CN 106695261 A CN106695261 A CN 106695261A CN 201710028765 A CN201710028765 A CN 201710028765A CN 106695261 A CN106695261 A CN 106695261A
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- China
- Prior art keywords
- thermal expansion
- compensation method
- drive axle
- workpiece
- shape
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/16—Axle housings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a compensation method for a thinned area in a thermal expansion molding process of a lorry integrated drive axle. The compensation method includes the following steps of (S1) blanking; (S2) shaft head extrusion; (S3) square forming; (S4) process tank cutting; (S5) local heating of a workpiece; (S6) local upsetting, specifically, a heated blank material is fed into an upsetting die for upsetting; (S7) heating; (S8) radial thermal expansion molding, specifically, the middle area is expanded through a hydraulic or wedge mechanism into a corresponding oval shape where a die with an expansion and shaping mandrel can be put; (S9) expansion, and shaping extrusion; and (S10) taking the workpiece out from the die. According to the compensation method for the thinned area in the thermal expansion molding process of the lorry integrated drive axle, a process of welding triangular plate inserts is thoroughly abandoned, product defects caused by welding of triangular plate inserts are eliminated, and product quality is improved.
Description
Technical field
It is to be related to a kind of truck entirety drive axle thermal expansion more specifically the present invention relates to drive axle technical field
It is expanded into the compensation method of weakened section during shape.
Background technology
Current truck Driving axle housing can be divided into casting bridge shell, punching-welding axle housing, mechanical expansion type axle housing and inner high voltage
Shaping axle housing.And mechanical expansion type axle housing has mechanical strength higher compared with other axle housings, technological process is shortened, material
Material utilization rate is increased substantially, and has very big advantage relative to the overall machinery expansion type axle housing of other axle housings.But in entirety
When mechanical expansion type axle housing machinery thermal expansion is expanded into shape, occur along the centre bore position of drive axle axial direction more obvious
Weakened region.All it is often that deformed area is reserved into delta-shaped region A in current technology referring to Fig. 3, thermal expansion is expanded into shape
Set square is welded again afterwards to eliminate weakened region.Although can so eliminate weakened region, operation can be increased, increased manufacture
Cost, meanwhile, the heat affected area of set square welding region and correlation is that the most region of quality problems occur.
The content of the invention
The technical problem to be solved in the present invention:Method by increasing weakened region thickness in advance, is expanded into mechanical thermal expansion
Weakened region after shape meets the requirement to mechanical strength.
Technical scheme：Truck entirety drive axle thermal expansion is expanded into the compensation method of weakened section during shape,
Comprise the following steps：S1）Blanking：From the blank of tubular, according to the required measure of overall Driving axle housing；S2）Squeeze
Last item head：Two ends spindle nose is squeezed into required shape and size；S3）Change side：Using special tool, mould, center section is changed into
Square tubulose；S4）Cutting technique groove：Cut the required technology groove of Extrusion bulging；S5）Workpiece local heating：By blank in thermal expansion
Tension-thining region when being expanded into shape integral housing carries out local heating；S6）Gathering stock：Embryo material after heating is sent into jumping-up
In mould, jumping-up is carried out.S7）Heating：Heating furnace is put into by jumping-up and with the workpiece of technology groove；S8）Radial direction heat expansion shapes：
Using hydraulic pressure or Xie Qie mechanisms by zone line distending into the corresponding ellipse that can be put into the mould with bulging and shaping core
Shape；S9）Bulging, shaping extruding：The workpiece that preamble shapes finally is shaped；S10）Workpiece is removed from the molds.
The tension-thining region of step S5 is：As midpoint, left and right length is more than in the center of circle with extrusion process groove two ends arc
60 scope less than 160.
In step S5, the tension-thining region of blank is heated to 1100 DEG C.
In step S7, workpiece is put into heating furnace after being heated to 1100 DEG C and takes out.
Beneficial effects of the present invention：
The compensation method that truck of the present invention entirety drive axle thermal expansion is expanded into weakened section during shape is thoroughly eliminated
The technique for welding set square insert, has first gone out because of product defects caused by welding set square insert, improves product quality.
Brief description of the drawings
Fig. 1 is the tension-thining area schematic that truck entirety drive axle thermal expansion of the present invention is expanded into shape.
Fig. 2 is the truck entirety drive axle swollen forming process weakened section jumping-up operation schematic diagram of thermal expansion of the present invention.
Fig. 3 is the automobile entirety drive axle manufacturing process schematic diagram of prior art.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " front and rear ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify describe, rather than indicate imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should broadly understood, for example, it may be being fixedly connected.Can also be detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
The concrete meaning of invention.
Truck Driving axle housing is divided into casting bridge shell, punching-welding axle housing, mechanical expansion type axle housing and internal high pressure forming bridge
Shell.
Casting bridge shell is history axle housing the longest；Because casting bridge shell technical process is simple, efficiency is also higher, bridge
Shell wall thickness everywhere can need to be adjusted according to intensity and structure, therefore up to now, casting bridge shell application amount is still very
Greatly.As the tonnage of bogie is continued to increase, cast-iron axle housing has faded out market, and cast-steel axle shell turns into the main flow of casting bridge shell.But
It is that cast-steel axle shell quality control difficulties, percent defective is high, its most prominent shortcoming is thick wall thickness, and quality is big, tension shock resistance
Difference.
Punching-welding axle housing is that shaping half-shell is welded.The weight of punching-welding axle housing is only the 75% of casting bridge shell, left and right, punching weldering
The shortcoming of axle housing is relatively more weld seams, and spindle nose and spring perch and support will be connected together by welding with axle housing.Punching
Weldering axle housing occur quality problems it is most be exactly welding region and correlation heat affected area, the fracture of punching-welding axle housing mainly appears on
In weld affected zone domain.
Mechanical expansion type axle housing is to use hydraulic pressure or Xie Qiedeng mechanisms by zone line using the tubular blank of middle fluting
Distending simultaneously carries out shaping and coordinates the integral housing of the operations such as the necking down of spindle nose shaping, this axle housing to eliminate in punching-welding axle housing
Between weld seam and spindle nose welding, therefore the mechanical strength of overall machinery expansion type axle housing has increased significantly, technological process
Greatly shorten, stock utilization is greatly improved.Clearly, market prospects are non-for the advantage of overall machinery expansion type axle housing
Chang Hao.Although overall machinery expansion type axle housing particularly has at present also in developing and improving the stage in press expansion region
Obvious weakened region, is the key for restricting its development.
Internal high pressure forming axle housing is to coordinate spindle nose necking down and local shaping to be axle housing by forming tubular product using inner high voltage technology
Technology, this axle housing by bonnet direct forming out, can eliminate the manufacture and substantial amounts of welding job of axle housing bonnet, its
Mechanical strength is significantly improved compared with punching-welding axle housing.
The above analysis, although it is have the advantages that very much development prospect and manufacturing cost that overall machinery dilates shaping,
But, when mechanical thermal expansion is expanded into shape, there is more obvious weakened region in the centre bore position along drive axle axial direction, its
Main cause is to be in stretcher strain all the time during this is in forming process, is much to utilize to reduce the influence of weakened region
The method of reserved set square, deformed area is reserved corresponding delta-shaped region in advance, after dilating shaping, then welds corresponding three
Gusset, although can so eliminate weakened region, can increase operation, increased manufacturing cost, meanwhile, set square weld zone
The heat affected area of domain and correlation is still the most region of quality problems occur.Therefore, the present invention by increasing weakened region in advance
The method of thickness, the weakened region for making machinery dilate after shaping meets the requirement of mechanical strength.It is specific as follows：
Referring to Fig. 1-2：Truck entirety drive axle thermal expansion is expanded into the compensation method of weakened section during shape, it is characterised in that
Comprise the following steps：S1）Blanking：From the blank of tubular, according to the required measure of overall Driving axle housing；S2）Squeeze
Last item head：Two ends spindle nose is squeezed into required shape and size；S3）Change side：Using special tool, mould, center section is changed into
Square tubulose；S4）Cutting technique groove：Cut the required technology groove of Extrusion bulging；S5）Workpiece local heating：By blank in thermal expansion
Tension-thining region when being expanded into shape integral housing carries out being locally heated to 1100 DEG C, and described tension-thining region 1 is：To squeeze
The center of circle of pressure technology groove two ends arc is midpoint, scope of the left and right length more than 60 less than 160:；S6）Gathering stock：Will heating
In embryo material feeding heading die 2 afterwards, it is the sectional area for increasing tubing at this to carry out jumping-up purpose, to compensate due to stretcher strain
The thickness that the sectional area of generation is reduced, due to compensate for thickness, so tubing is less prone to fracture, the length of deformed region after jumping-up
Degree is not more than 100 not less than 40；S7）Heating：Jumping-up and workpiece with technology groove are put into heating furnace and are heated to 1100 DEG C
After take out；S8）Radial direction heat expansion shapes：Using hydraulic pressure or Xie Qie mechanisms by zone line distending into can be put into bulging and whole
The corresponding elliptical shape of the mould of shape core；S9）Bulging, shaping extruding：The workpiece that preamble shapes finally is shaped；S10）
Workpiece is removed from the molds.
Although an embodiment of the present invention has been shown and described, it will be understood by those within the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent, without creative work improvements introduced etc., all should be included
Within protection scope of the present invention.
Claims (4)
1. truck entirety drive axle thermal expansion is expanded into the compensation method of weakened section during shape, it is characterised in that including following
Step：S1）Blanking：From tubular blank, according to the required measure of overall Driving axle housing；S2）Extruding spindle nose：By two
End spindle nose is squeezed into required shape and size；S3）Change side：Using special tool, mould, center section is changed into square tubulose；S4）
Cutting technique groove：Cut the required technology groove of Extrusion bulging；S5）Workpiece local heating：Blank is expanded into shape entirety bridge in thermal expansion
Tension-thining region during shell carries out local heating；S6）Gathering stock：By in the embryo material feeding heading die after heating, carry out
Jumping-up；S7）Heating：Heating furnace is put into by jumping-up and with the workpiece of technology groove；S8）Radial direction heat expansion shapes：Using hydraulic pressure or
Xie Qie mechanisms are by zone line distending into the corresponding elliptical shape that can be put into the mould with bulging and shaping core；S9）It is swollen
Shape, shaping extruding：The workpiece that preamble shapes finally is shaped；S10）Workpiece is removed from the molds.
2. truck entirety drive axle thermal expansion according to claim 1 is expanded into the compensation method of weakened section during shape,
It is characterized in that：The tension-thining region of the step S5 is：The center of circle with extrusion process groove two ends arc is as midpoint, and left and right is long
Scope of the degree more than 60 less than 160.
3. truck entirety drive axle thermal expansion according to claim 2 is expanded into the compensation method of weakened section during shape,
It is characterized in that：In the step S5, the tension-thining region of blank is heated to 1100 DEG C.
4. truck entirety drive axle thermal expansion according to claim 3 is expanded into the compensation method of weakened section during shape,
It is characterized in that：In the step S7, workpiece is put into heating furnace after being heated to 1100 DEG C and takes out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028765.XA CN106695261A (en) | 2017-01-16 | 2017-01-16 | Compensation method for thinned area in thermal expansion molding process of lorry integrated drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028765.XA CN106695261A (en) | 2017-01-16 | 2017-01-16 | Compensation method for thinned area in thermal expansion molding process of lorry integrated drive axle |
Publications (1)
| Publication Number | Publication Date |
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| CN106695261A true CN106695261A (en) | 2017-05-24 |
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| CN201710028765.XA Pending CN106695261A (en) | 2017-01-16 | 2017-01-16 | Compensation method for thinned area in thermal expansion molding process of lorry integrated drive axle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213861A (en) * | 2017-11-29 | 2018-06-29 | 闫永东 | A kind of automobile axle housing forming method |
| CN108994532A (en) * | 2018-07-21 | 2018-12-14 | 河北弘凯重型机床有限公司 | A kind of vehicle rear-axle housing and its processing technology |
| CN110802371A (en) * | 2019-10-21 | 2020-02-18 | 南京钢铁股份有限公司 | Spraying method of separating agent for pack-rolled thin plates |
| CN111745355A (en) * | 2020-06-16 | 2020-10-09 | 丁海英 | Integrated axle body machining process |
| CN113814672A (en) * | 2021-10-27 | 2021-12-21 | 三门峡三星智能装备制造有限公司 | Axle housing forming process |
| CN114713724A (en) * | 2022-06-09 | 2022-07-08 | 北京科技大学 | Heating equipment and stamping process of high-strength steel medium-thickness plate blank for automobile axle housing |
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| JP2000085392A (en) * | 1998-09-08 | 2000-03-28 | Suzuki Motor Corp | Center cover for axle case |
| CN1616161A (en) * | 2003-11-14 | 2005-05-18 | 衡阳欣凯实业有限公司 | Method for producing non-cast integrally formed antomobile driving axle shell |
| CN101879565A (en) * | 2010-06-04 | 2010-11-10 | 衡阳连续运输机械有限公司 | Manufacturing method of welded steel pipe-free integrally formed automobile transaxle housing |
| CN103894476A (en) * | 2014-03-26 | 2014-07-02 | 吉林大学 | Overall thermal expansion manufacturing method for heavy-duty car drive axle housing |
| CN105436350A (en) * | 2016-01-05 | 2016-03-30 | 吴志强 | Forming method for banjo axle housing |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000085392A (en) * | 1998-09-08 | 2000-03-28 | Suzuki Motor Corp | Center cover for axle case |
| CN1616161A (en) * | 2003-11-14 | 2005-05-18 | 衡阳欣凯实业有限公司 | Method for producing non-cast integrally formed antomobile driving axle shell |
| CN101879565A (en) * | 2010-06-04 | 2010-11-10 | 衡阳连续运输机械有限公司 | Manufacturing method of welded steel pipe-free integrally formed automobile transaxle housing |
| CN103894476A (en) * | 2014-03-26 | 2014-07-02 | 吉林大学 | Overall thermal expansion manufacturing method for heavy-duty car drive axle housing |
| CN105436350A (en) * | 2016-01-05 | 2016-03-30 | 吴志强 | Forming method for banjo axle housing |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213861A (en) * | 2017-11-29 | 2018-06-29 | 闫永东 | A kind of automobile axle housing forming method |
| CN108213861B (en) * | 2017-11-29 | 2020-05-19 | 闫永东 | Automobile axle housing forming method |
| CN108994532A (en) * | 2018-07-21 | 2018-12-14 | 河北弘凯重型机床有限公司 | A kind of vehicle rear-axle housing and its processing technology |
| CN110802371A (en) * | 2019-10-21 | 2020-02-18 | 南京钢铁股份有限公司 | Spraying method of separating agent for pack-rolled thin plates |
| CN110802371B (en) * | 2019-10-21 | 2021-03-30 | 南京钢铁股份有限公司 | Spraying method of separating agent for pack-rolled thin plates |
| CN111745355A (en) * | 2020-06-16 | 2020-10-09 | 丁海英 | Integrated axle body machining process |
| CN113814672A (en) * | 2021-10-27 | 2021-12-21 | 三门峡三星智能装备制造有限公司 | Axle housing forming process |
| CN113814672B (en) * | 2021-10-27 | 2022-12-06 | 三门峡三星智能装备制造有限公司 | Axle housing forming process |
| CN114713724A (en) * | 2022-06-09 | 2022-07-08 | 北京科技大学 | Heating equipment and stamping process of high-strength steel medium-thickness plate blank for automobile axle housing |
| CN114713724B (en) * | 2022-06-09 | 2022-08-30 | 北京科技大学 | Heating equipment and stamping process of high-strength steel medium-thickness plate blank for automobile axle housing |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |