CN109926532A - Hub bearing outer ring Multi-station precision forming technology and its realization device - Google Patents
Hub bearing outer ring Multi-station precision forming technology and its realization device Download PDFInfo
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- CN109926532A CN109926532A CN201910211021.0A CN201910211021A CN109926532A CN 109926532 A CN109926532 A CN 109926532A CN 201910211021 A CN201910211021 A CN 201910211021A CN 109926532 A CN109926532 A CN 109926532A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 16
- 238000007493 shaping process Methods 0.000 claims abstract description 16
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000009966 trimming Methods 0.000 claims abstract description 13
- 238000009740 moulding (composite fabrication) Methods 0.000 claims abstract description 5
- 239000000047 product Substances 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 29
- 238000005457 optimization Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 239000011265 semifinished product Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 229910001060 Gray iron Inorganic materials 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005242 forging Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 2
- 206010054949 Metaplasia Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A kind of hub bearing outer ring Multi-station precision forming technology and its realization device, blank is successively carried out by straight side transfer shaping dies it is independent flatten, double glasss of extruding, forming, punchings, trimming technology, realize the Optimize the forming scheme of bearing outer ring；The hub bearing outer ring shaping dies, flattening unit, double glasss of squeeze units, forming unit, punching unit and the trimming unit being arranged successively, the upper mold of each unit and its corresponding lower die are respectively arranged on mould bases cope plate and mould bases lower template, cylinder body type nitrogen gas spring is equipped in the mould bases cope plate, curve movement can be ejected according to equipment and design shaping dies, realize in forming production process without jump material mode.
Description
Technical field
The present invention relates to a kind of technologies of metal fever molding field, and in particular to a kind of multiplexing of hub bearing outer ring forging
Position precise forming process and its realization device.
Background technique
Hub bearing key component is the important composition components in automobile chassis, and hub bearing outer ring belongs to hub bearing
Key component wherein more important one kind.Existing hub bearing outer ring forming technology and mold design utilize open type multistation
(multiple devices line) hot forging process improving product streamline problem, but due to heat in multiple devices line production process
It is lost fastly, causes product hardness unqualified, and fail to improve useless more, the low problem of Product Precision of product material.In addition, producing
Process transports each station blank by manipulator or walking beam, and the device of machinery conveying comes out wink from mold to product
Between require steadily without displacement, this can just guarantee that product is accurately clamped into next unit, but this problem is not solved thoroughly
Certainly, become the problem for hindering automated production.Therefore how to guarantee that product exactly from mold is clamped equally is to be badly in need of
It solves the problems, such as.
Summary of the invention
The present invention proposes that a kind of hub bearing outer ring Multi-station precision shapes work for deficiency existing for the existing above problem
Skill and its realization device optimize material distribution to blank plastic forming process by multistation forming, increase on this basis
Add the design of upper/lower die guide frame, Closed Forming technological design and increase nitrogen gas spring binder and combines ejection material design skill
Art solves the problems, such as that forming process precision is low, material is useless more.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of hub bearing outer ring Multi-station precision forming technologies, pass through straight side transfer shaping dies pair
Blank successively carries out independent flattening, double glasss of extruding, forming, punchings, trimming technology, realizes the Optimize the forming scheme of bearing outer ring.
The present invention relates to a kind of hub bearing outer ring shaping dies for realizing above-mentioned technique, comprising: the flattening being arranged successively
Unit, double glasss of squeeze units, forming unit, punching unit and trimming unit, in which: the upper mold of each unit and its corresponding
Lower die is respectively arranged on mould bases cope plate and mould bases lower template, and cylinder body type nitrogen gas spring is equipped in the mould bases cope plate, can
Curve movement is ejected according to equipment and designs shaping dies, is realized in forming production process without jump material mode.
The profile diameter of the forming upper mold of the forming station is smaller than the intracavity diameter of the forming lower die of forming unit
0.15mm/ is unilateral, realizes that the guiding role during forming reaches the high-precision requirement of product.
The size at the overlap outer profile position of the forming lower die of the forming unit, obtains in the following manner: passing through
Three-dimensional simulation mode obtains filling at first and forms flash locations completely, and obtains the overlap width of this position；Then according to minimum
Overlap width value modifies adjustment to product overlap shape, the overlap shape after being reduced；According to the overlap shape after diminution
Forming station Key Mold Design is closed molds by shape, to solve since the overlap for preferentially filling complete position is excessive
And the unbalanced problem of overlap.
The present invention relates to a kind of control methods based on above-mentioned straight side transfer shaping dies, after the completion of forming processing,
While ejecting the finished goods of forming station by control bottom knockout bar, control mould bases cope plate is moved up, and is now placed in mould
Nitrogen gas spring in tool cope plate performs relative motion, i.e., mandril is in ejection forming upper mold with stable prod；When in forming lower die
After intracavity gas emptying, control lower push rod continues to move up and will be under the ejection forming of the finished goods mechanical rigid of forming station
The inner cavity of mould after knock-pin is moved to end instantly, starts hydraulic device in lower template and ejects the finished goods of forming station,
To continue that product is kept steadily to move.
Technical effect
Compared with prior art, present invention employs the multistation essences for including flattening, double glasss of extruding, forming, punching, trimming
Close forming technology, the material for optimizing product in forming process mid-early stage distribute, reduce tonnage when forming, solve into
The generation of unnecessary overlap during shape realizes few flashing precise forming technology of hub bearing outer ring, avoids due to flying
Side forms the waste of material generated.Forming station Key Mold structure is designed as closed molds, and when upper contour forming is in lower die
In die cavity, by the gap shrinks of upper mold and lower die, product size precision is improved, and reduce in upper mold edge setting stock chest
Material fluctuates the influence to die life.Double glasss of extruding, forming station combine ejection curve movement to set using nitrogen gas spring
It counts, nitrogen gas spring is always maintained at binder effect before realizing product ejection die cavity, guarantees in production process without abnormal conditions such as jump material
Occur.
Detailed description of the invention
Fig. 1 is process simplified schematic diagram of the present invention；
Flattening, double glasss of extruding, forming, punching, each station basic configuration of trimming are followed successively by figure from left to right；
Fig. 2 and Fig. 3 is trimming unit design diagram in embodiment；
Fig. 4 is that forming unit stablizes ejection mold structure schematic diagram；
Fig. 5 is Fig. 4 enlarged diagram；
In figure: lower die ejector beam 1, cylinder body type nitrogen gas spring 2, blank 3, upper mold 4, lower die 5, mould bases cope plate 6, mould bases
Lower template 7, lower die ejection stroke I, knocking from up die stroke K, upper and lower die clearance are that 0.15mm/ is unilateral；
Fig. 6 is cylinder body type nitrogen gas spring schematic diagram；
In figure: piston rod 201, cylinder body 203, cylinder cap 202, inflation mechanism 204, cylinder bottom 205, sealing ring 206.
Specific embodiment
As shown in Figure 1, the present embodiment includes the successively flattening of independent process, double glasss of extruding, forming, punching, trimmings five
Treatment process, in which:
The flattening refers to: the upper die and lower die by flattening unit squeeze blank, its height are reduced same
When diameter be amplified to than just squeeze element diameter it is small 0.5mm~1mm within the scope of, and generated after being heated by flattening process removal
Oxide skin.
Double cups, which squeeze, to be referred to: by the upper die and lower die of preform unit by the semi-finished product head diameter after flattening
Amplification, to reduce the die forming load of forming station, while it is close to forming unit product shape that shape of product, which is squeezed,
Shape realizes the streamline distribution optimization in forming unit product forming process.
The forming refers to: being formed and is handled to required to semi-finished product by the upper die and lower die of forming unit
Geomery realizes product in ejection process in conjunction with ejection curve movement by using cylinder body type nitrogen gas spring in forming process
The static steady ejection lower die of opposing mold.
As shown in figure 4, the cylinder body type nitrogen gas spring 2 includes: the shell that cylinder body 203, cylinder cap 202 and cylinder bottom 205 form
High pressure is injected by inflation mechanism 204 in body portion and the piston rod 201 being set in housing parts, middle housing part inside
Nitrogen, in forming process, the effect of piston rod power loaded is protruded into cylinder body and gas in compression cylinder, after the completion of deformation, load
Power release, piston rod is stretched out cylinder body by high pressure gas effect in cylinder body, and is acted on upper die structure with lower die simultaneously to product
Apply opposite direction load, realizes that product and upper and lower mould are opposing stationary.
The punching refers to: by the way that semi-finished product core excess stock is removed under the upper die and lower die effect of punching unit,
Realize that the cost in subsequent product turning process reduces.
The trimming refers to: by overlap excess stock outside semi-finished product under being acted on by the upper die and lower die of trimming unit
The preparation of hub bearing outer ring is completed in removal.
The present embodiment completes target product technological design by following steps and mould structure designs:
Step 1: from each station shape of final goal product reverse design, successively Recursive Design obtains punching, forming, double cups
It squeezes, flatten work station product shape.
Step 2: design forming station overlap shape: as shown in Fig. 2, designing mold drawing according to traditional dies, then building
Vertical forming unit upper die and lower die threedimensional model, is emulated using threedimensional model and simulates to obtain final products and be full of position at first
F and its corresponding overlap width X is set, by this width to being set as minimum overlap width；As shown in figure 3, according to minimum overlap width
Value X modifies adjustment to product overlap shape, the overlap shape after drawing optimization, amplifies X along shape according to the original profile of product
Value can obtain the overlap shape after optimization is reduced, and dotted line G is the overlap shape before overlap is not optimised in Fig. 3.
Step 3: mold design being carried out according to the multistation shape that design is completed, cylinder body type nitrogen bullet is used when mold design
Spring, in conjunction with ejection curve movement, whole station closed type assembly drawing of die are completed in design.
Step 4: smaller than lower die intracavity diameter according to upper mold profile diameter when according to mold drawing design and manufacture mold component
The unilateral requirement of 0.15mm/ executes, and realizes each unit guiding role.
Step 5: the bar after heating being passed sequentially through into flattening, double glasss of extruding, forming, punchings, shaving die in production
Pressure processing is carried out, final products manufacture is completed.
Compared with prior art, the flattening process in the present invention can heat rear surface oxide skin for removal product；In advance at
The control of product material flow direction can be distributed for optimization product material and be optimized to shape process, realize product streamline optimization function；
Forming process can be formed product outer dimension, wherein to product overlap optimization design in forming process, and according to optimization after
Overlap design forming station closed type mold, product material utilization rate about 15% can be improved, and promote the coaxial accuracy of product
Requirement within 0.5 guarantees wherein stablizing for ejection process ejects after realizing product shaping using nitrogen gas spring device certainly
Product in dynamic metaplasia production ejects stability, can increase substantially production efficiency.Punching operation can be that product core is extra
Material removal, can machining cost after effectively save product forging cost and forging.Trimming process can for will outside product it is extra
The removal of overlap material.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (7)
1. a kind of hub bearing outer ring Multi-station precision forming technology, which is characterized in that pass through straight side transfer shaping dies pair
Blank successively carries out independent flattening, double glasss of extruding, forming, punchings, trimming technology, realizes the Optimize the forming scheme of bearing outer ring,
In:
The flattening refers to: diameter is amplified to 0.5mm~1mm range smaller than just crowded element diameter while its height is reduced
It is interior, and the oxide skin by being generated after flattening process removal heating；
Double cups, which squeeze, to be referred to: the semi-finished product head diameter after flattening is amplified by the upper die and lower die of preform unit,
To reduce the die forming load of forming station, while shape of product being squeezed to realize close to forming unit shape of product
Streamline distribution optimization during forming unit product shaping.
2. a kind of straight side transfer shaping dies for realizing technique described in claim 1 characterized by comprising be arranged successively
Flattening unit, double glasss of squeeze units, forming unit, punching unit and trimming unit, in which: the upper mold of each unit and its right
The lower die answered is respectively arranged on mould bases cope plate and mould bases lower template, and cylinder body type nitrogen gas spring is equipped in the mould bases cope plate,
Curve movement can be ejected according to equipment and design shaping dies, realize in forming production process without jump material mode.
3. straight side transfer shaping dies according to claim 2, characterized in that the forming upper mold of the forming station
Profile diameter it is 0.15mm/ smaller than the intracavity diameter of the forming lower die of forming unit unilateral, realize forming during guiding make
With reaching the high-precision requirement of product.
4. straight side transfer shaping dies according to claim 2, characterized in that the forming lower die of the forming unit
Overlap outer profile position size, obtain in the following manner: by three-dimensional simulation mode obtain at first filling completely formed
Flash locations, and obtain the overlap width of this position；Then it is modified according to minimum overlap width value to product overlap shape
Adjustment, the overlap shape after being reduced；According to the overlap shape after diminution by forming station Key Mold Design be closed mould
Tool.
5. straight side transfer shaping dies according to claim 2, characterized in that the cylinder body type nitrogen gas spring packet
It includes: the housing parts and the piston rod that is set in housing parts of gray iron and cylinder bottom composition, inside middle housing part
High pressure nitrogen is injected by inflation mechanism, piston rod power effect loaded is protruded into cylinder body and in compression cylinder in forming process
Gas, after the completion of deformation, loading force release, piston rod is stretched out cylinder body by high pressure gas effect in cylinder body, and acts on upper mold knot
Opposite direction load is applied to product simultaneously with lower die on structure, realizes that product and upper and lower mould are opposing stationary.
6. a kind of control method based on the straight side transfer shaping dies any in claim 2~5, feature exist
In, after the completion of forming processing, while ejecting the finished goods of forming station by control bottom knockout bar, control mould bases cope plate
It moves up, the nitrogen gas spring being now placed in upper mould plate performs relative motion, i.e., mandril is in ejection forming upper mold with stabilization
Product；After the interior intracavity gas emptying of forming lower die, control lower push rod is continued to move up and by the finished goods of forming station
Mechanical rigid ejects the inner cavity of forming lower die, and after knock-pin is moved to end instantly, starting hydraulic device in lower template will shape
The finished goods of station ejects, to continue that product is kept steadily to move.
7. a kind of optimization implementation method of the hub bearing outer ring according to any of the above-described claim, which is characterized in that including
Following steps:
Step 1: from each station shape of final goal product reverse design, successively Recursive Design obtains punching, forming, double cups squeeze
Pressure flattens work station product shape；
Step 2: design forming station overlap shape: according to traditional dies design mold drawing, then establish forming unit upper mold,
Lower die threedimensional model, is emulated using threedimensional model and simulates to obtain final products and be full of position F at first and its corresponding fly
Hem width degree X, by this width to being set as minimum overlap width；It is modified according to minimum overlap width value X to product overlap shape
Adjustment, the overlap shape after drawing optimization amplify X value along shape according to the original profile of product, obtain the overlap shape after optimization is reduced
Shape；
Step 3: mold design is carried out according to the multistation shape that design is completed, cylinder body type nitrogen gas spring is used when mold design,
In conjunction with ejection curve movement, whole station closed type assembly drawing of die are completed in design；
Step 4: smaller than lower die intracavity diameter according to upper mold profile diameter when according to mold drawing design and manufacture mold component
The unilateral requirement of 0.15mm/ executes, and realizes each unit guiding role；
Step 5: the bar after heating being passed sequentially through into flattening, double glasss of extruding, forming, punching, shaving die progress in production
Pressure processing and the manufacture for completing hub bearing outer ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910211021.0A CN109926532B (en) | 2019-03-20 | 2019-03-20 | Multi-station precision forming process for hub bearing outer ring and implementation device thereof |
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| CN201910211021.0A CN109926532B (en) | 2019-03-20 | 2019-03-20 | Multi-station precision forming process for hub bearing outer ring and implementation device thereof |
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| CN109926532A true CN109926532A (en) | 2019-06-25 |
| CN109926532B CN109926532B (en) | 2021-04-02 |
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Cited By (1)
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| CN112496220A (en) * | 2020-12-29 | 2021-03-16 | 江苏森威精锻有限公司 | Closed forging process for flange plate of hub unit |
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