CN106734797A - A kind of variable-section variable wall thickness axle of swaging is swaged the determination method of mould finishing segment length - Google Patents
A kind of variable-section variable wall thickness axle of swaging is swaged the determination method of mould finishing segment length Download PDFInfo
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- CN106734797A CN106734797A CN201611235442.XA CN201611235442A CN106734797A CN 106734797 A CN106734797 A CN 106734797A CN 201611235442 A CN201611235442 A CN 201611235442A CN 106734797 A CN106734797 A CN 106734797A
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- 238000005242 forging Methods 0.000 claims description 21
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/008—Incremental forging
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Abstract
Swaged the determination method of mould finishing segment length according to variable-section variable wall thickness involved in the present invention axle of swaging, comprised the following steps：It is determined that the position of the neutral surface in the rotary swaging process of shaft part containing plug；Set up the relation that shaft part containing plug is swaged between mould finishing segment length and neutral surface position；Set up the relation that shaft part containing plug is swaged between mould finishing segment length and power of swaging；The mould Strain During Finishing Stage limiting length it is determined that shaft part containing plug is swaged；The mould Strain During Finishing Stage active length it is determined that shaft part containing plug is swaged.The present invention swages with reference to car and axle product and swages feature, the relation that foundation is swaged between mould finishing segment length and neutral surface position, power of swaging containing plug, the variable-section variable wall thickness of proposition swage axle swage mould finishing segment length determination method to improving the quality and performance of hollow shaft, and to swaging hollow shaft mold design containing plug and there is important Technical Reference to be worth for actual production.
Description
Technical field
The invention belongs to mechanical field, and in particular to a kind of determination method of mould finishing segment length.
Background technology
Constant velocity shaft is an important composition part in automobile constant velocity Universal drive assembly.In one end and speed changer
Differential side gear be connected, the other end be connected with the wheel hub of driving wheel, car traveling during play transmit move and
The effect of torque.
Swaging is referred to as swaged, it is also possible to be called radial forging, is that one kind is used for bar, tubing or wire rod Precision Machining
Rotoforming technique, belong to the category of progressive molding and near-net-shape.
While swaging is that one kind surround the high speed rotation of blank axis by 2~4 pieces of forging dies, high frequency forging is carried out to blank
Beat, so that the progressive molding method of the reduction of blank shaft section size or alteration of form.Swage processing hollow shaft, being capable of the company of realization
Continuous radial direction is forged, and the amount of feeding is small, compared with the forging that machining is obtained, with preferable Forming Quality.Additionally, using forging
Forming technique, shape and size can be controlled flexibly, can provide complex-shaped parts blank, therefore, abroad senior
Extensively using technique of swaging in car transmission shaft manufacture.Monoblock type car hollow shaft can be processed using technique of swaging, had
Light weight degree is high, torsional rigidity is high and the features such as fatigue life high.Technique of swaging can process monoblock type car hollow shaft,
With light weight degree is high, torsional rigidity high and the features such as fatigue life high, for small size and the car for bearing high pulling torque etc.
The manufacture of fast Universal drive jackshaft has an obvious advantage, therefore car constant-speed Universal drive jackshaft is swaged during technique can turn into
The development trend of countershaft manufacture production.
The center section of car constant-speed universal drive shaft is the grade wall thickness hollow shaft for utilizing technique formation of being swaged containing plug, rotation
In forging process rational technological parameter be ensure swage product quality and prevention defect key.
But, the car constant-speed universal drive shaft produced using current processing technology of swaging there are pit, surface
The defect such as folding, surface cracks, deviation from circular from, straightness error, surface roughness be excessive.If forging desired size precision
It is higher, then mould finishing segment length of swaging must reasonably be designed, if mould Strain During Finishing Stage Design of length is unreasonable, Chang Hui
Cause hollow shaft to occur the defects such as deviation from circular from, straightness error, surface roughness be excessive in rotary swaging process, influence hollow shaft
Quality and performance.
The content of the invention
The present invention is carried out to solve the above problems, it is therefore intended that is provided a kind of variable-section variable wall thickness and is swaged axle rotation
The determination method of forging mould finishing segment length.
Swaged the determination method of mould finishing segment length the invention provides a kind of variable-section variable wall thickness axle of swaging, for
Axle of swaging containing plug shaft part is swaged in technique, neutral surface position and axle of swaging in the rotary swaging process of quality of being swaged to influence
Mould finishing segment length of swaging is determined, it is characterised in that including：
Step 1, it is determined that the position of the neutral surface in the rotary swaging process of shaft part containing plug；
Step 2, sets up the relation that shaft part containing plug is swaged between mould finishing segment length and neutral surface position；
Step 3, sets up the relation that shaft part containing plug is swaged between mould finishing segment length and power of swaging；
Step 4, the mould Strain During Finishing Stage limiting length it is determined that shaft part containing plug is swaged；
Step 5, the mould Strain During Finishing Stage active length it is determined that shaft part containing plug is swaged.
In the variable-section variable wall thickness that the present invention is provided swages the determination method that axle swages mould finishing segment length, can be with
Have the feature that：Wherein, in step 2, by any one method in economics analysis method, simulation method, experimental method come really
Surely shaft part containing plug is swaged the relation of mould finishing segment length and neutral surface position.
In addition, in the variable-section variable wall thickness that the present invention is provided swages the determination method that axle swages mould finishing segment length,
Can also have the feature that：Wherein, plural number is chosen by simulation method respectively in step 2 and plants containing for different finishing segment length
Plug shaft part is swaged mould, obtains being swaged mould finishing segment length and the relation line 1 of neutral surface position containing plug by experiment, should
The function expression of relation line 1 is：yy1=0.49x+15.02, y1Y-axis coordinate value corresponding to neutral surface, x is mm for unit
Mould finishing segment length of being swaged containing plug value.
In addition, in the variable-section variable wall thickness that the present invention is provided swages the determination method that axle swages mould finishing segment length,
Can also have the feature that：Wherein, in step 3, under conditions of the amount of feeding is swaged in setting containing plug, plural number is chosen respectively
The shaft part containing plug of kind different finishing segment length is swaged mould, by experiment obtain containing plug swage mould finishing segment length with
The relation line 2 between power is forged, the function expression of the relation line 2 is：yy2=16.46x-199.35, y2To forge the value of power,
X is value that unit is the mould finishing segment length of being swaged containing plug of mm.
In addition, in the variable-section variable wall thickness that the present invention is provided swages the determination method that axle swages mould finishing segment length,
Can also have the feature that：Wherein, in step 4, identical blank material is chosen, is swaged the amount of feeding containing plug in setting
Under the conditions of, plural number is chosen respectively plant the shaft part containing plug of different finishing segment length swage mould, obtained containing plug by experiment
The relation curve 3 of mould finishing segment length of swaging and axial tension stress, the expression formula of the relation line 3 is：yy3=9.73 × 1010
×0.64x+ 477.12, y3For unit is the axial tension stress value of MPa, x is being swaged mould finishing segment length containing plug for mm for unit
The value of degree.
In addition, in the variable-section variable wall thickness that the present invention is provided swages the determination method that axle swages mould finishing segment length,
Can also have the feature that：Wherein, according to relation line 3, the Strain During Finishing Stage limit corresponding with blank material limiting value is obtained long
Degree.
In addition, in the variable-section variable wall thickness that the present invention is provided swages the determination method that axle swages mould finishing segment length,
Can also have the feature that：Wherein, in step 5, the Strain During Finishing Stage active length is for while meet the relation line 1, institute
State the value of relation line 2 and the relation line 3 and any one x less than the Strain During Finishing Stage limiting length.
The effect of invention and effect
Swaged the determination method of mould finishing segment length according to variable-section variable wall thickness involved in the present invention axle of swaging, including
Following steps：It is determined that the position of the neutral surface in the rotary swaging process of shaft part containing plug；Shaft part containing plug is set up to swage mould Strain During Finishing Stage
Relation between length and neutral surface position；Set up the pass that shaft part containing plug is swaged between mould finishing segment length and power of swaging
System；The mould Strain During Finishing Stage limiting length it is determined that shaft part containing plug is swaged；Produced with reference to face position, power of swaging and axle of swaging in swaging property
Product size, the mould finishing segment length it is determined that suitable shaft part containing plug is swaged.The present invention swages with reference to car and axle product and swages
Feature, the relation that foundation is swaged between mould finishing segment length and neutral surface position, power of swaging containing plug, the variable-section variable of proposition
Wall thickness swage axle swage mould finishing segment length determination method to improving the quality and performance of hollow shaft, and swaged containing plug
There is important Technical Reference to be worth for hollow shaft mold design and actual production.
Brief description of the drawings
Fig. 1 is the schematic diagram of hollow shaft interlude before swaging in embodiments of the invention；
Fig. 2 is the hollow shaft section schematic diagram of change wall thickness variable cross-section in embodiments of the invention；
Fig. 3 is that shaft part containing plug is swaged mould and the position relationship schematic diagram of blank in embodiments of the invention；
Fig. 4 is that the mould finishing segment length of swaging containing plug is illustrated with the relation line of neutral surface position in embodiments of the invention
Figure；
Fig. 5 is swaged mould finishing segment length and the relation line schematic diagram for forging power containing plug in embodiments of the invention；
And
Fig. 6 is that the mould finishing segment length of swaging containing plug is illustrated with the relation line of axial tension stress in embodiments of the invention
Figure.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, it is real below
Apply example combination accompanying drawing to the present invention provide variable-section variable wall thickness swage axle swage mould finishing segment length determination method make have
Body is illustrated.
Embodiment
Step 1, it is determined that the neutral surface position in the rotary swaging process of shaft part containing plug.
The present embodiment is swaged as a example by hollow shaft interlude by certain car, the blank that processing constant velocity universal jackshaft of swaging is used
It is seamless steel pipe, as shown in figure 1, material is steel alloy 25CrMo4, performance requirement of the product to blank material:Tensile strength is most
Big 630MPa (target 600MPa), 86~100HRB of case hardness (86~95HRB of target), 169~240HV5 of core hardness.Should
Billet size is：External diameter is 37mm, and wall thickness is 5mm.
For convenience, axle of swaging is divided into three parts by the processing technology according to product, as shown in Fig. 2 its shaft part 1,3
It is the hollow shaft section for becoming wall thickness variable cross-section, is swaged shaping using without plug multi-pass；The prismatic hollow shaft of wall thickness such as shaft part 2 is
Section, is swaged shaping using single pass containing plug.
(1) swaged according to variable-section variable wall thickness car the feature of swaging of axle, it is determined that being swaged neutral surface position containing plug；
For the present embodiment, being broadly divided into for the rotary swaging process of the axle of swaging of variable-section variable wall thickness 1 swage without mandrel axis section,
Shaft part containing plug 2 is swaged and three processes such as is swaged without mandrel axis section 3.
Process one, swages without mandrel axis section 1, and rotary swaging process material flows primarily radial, axial metal flow
Seldom.
Process two, shaft part containing plug 2 is swaged, and rotary swaging process is a drawing process to material, middle metal of swaging
Flowing had not only produced Radial Flow but also had produced axially flowing, by the crucial ginseng for controlling mold shape to be the flow direction for influenceing metal
Number.The Main way of control metal flow is needed in the rotary swaging process of shaft part containing plug 2, because having been swaged without mandrel axis section 1
The quality of many products that can influence to swage is flowed over to the end of shaft part containing plug 1 into, metal.
Process three, is swaged without mandrel axis section 3, and rotary swaging process was swaged as the rotary swaging process without mandrel axis section 1
The flowing of journey material is primarily radial, and axial metal flow is little..
Shaft part containing plug 2 swage mould and blank detail location relation as shown in figure 3, being swaged change according to mould and blank
The mould of swaging containing plug can be divided into three sections, respectively sinking section I, forging stage II, finishing by metal flow relation between shape
Section III.Wherein sinking section is mainly the blank material under the forging of mould and moves radially, and internal-and external diameter reduces；Forging stage is material
Primary deformable section, the basic molded line of product is formed under the forging of mould and with reference to the effect of plug；Mould Strain During Finishing Stage portion
It is divided into calibration segment, blank further improves product circularity and surface quality by forging for Strain During Finishing Stage.
Neutral surface in rotary swaging process is the divisional plane of metal flow, and metal does not flow in neutral surface, neutral surface both sides
Flow direction is conversely, the position of neutral surface is that influence is swaged one of the important parameter of quality in rotary swaging process.For the present embodiment,
In order to ensure quality of swaging, neutral surface position should be in mould Strain During Finishing Stage, and metal is given flowed to blank end as far as possible when so swaging
It is dynamic, the quality of the shaft part 1 of completion of having been swaged with guarantee.
When neutral surface is located at Strain During Finishing Stage, the metal flow rates at blank end are far longer than product end.According to variable-section variable
Wall thickness car swage axle swage feature and neutral surface position at material flow characteristics, neutral surface is better closer to product end, can
To reduce flowing of the material to product end, so as to avoid influenceing the machined quality for crossing part.So neutral surface should be located at essence
In whole section III.
Step 2, sets up the relation that shaft part containing plug is swaged between mould finishing segment length and neutral surface position.
(2) relation swaged between mould finishing segment length and neutral surface position containing plug is set up.
The mould finishing segment length centering face position influence of swaging containing plug is very big, in order to determine to swage mould essence containing plug
Whole segment length, can be by economics analysis, it is necessary to set up the relation of swaged containing plug mould finishing segment length and neutral surface position
Method, simulation method, experimental method etc. determine the relation of mould finishing segment length and neutral surface position of being swaged containing plug.
Determine to be swaged containing plug the relation of mould finishing segment length and neutral surface position in this example by simulation method.Respectively
The mould for choosing the different finishing segment length of five kinds of 40mm, 45mm, 50mm, 55mm, 60mm obtains being swaged mould Strain During Finishing Stage containing plug
Length is as shown in table 1 with the relation of neutral surface position：
Neutral surface position under the different finishing segment length of table 1
Using the data in table 1, obtain as shown in Figure 4 being swaged mould finishing segment length and neutral surface position containing plug
Relation line 1.
According to finishing segment length in Fig. 4 and the position relationship line 1 of neutral surface, finishing segment length and neutral surface position are fitted
Between functional relation such as formula (1) shown in
yy1=0.49x+15.02 (1)
In formula, y1Y-axis coordinate value corresponding to neutral surface, x is being swaged mould finishing segment length containing plug for mm for unit
The value of degree.
The simulation result of the neutral surface position under different finishing segment length is also shown that with the increase of finishing segment length, in
Property face position moved to product end, from neutral surface position to the flow effect of material, the increase of finishing segment length makes material
To die entrance end flowing increase, this be conducive to improve processing axle quality, so neutral surface the longer the better in theory, but
Technique can be subject to processing during axle reality processing of swaging and the limitation of power is forged, so Strain During Finishing Stage can not be long.
Step 3, sets up the relation that shaft part containing plug is swaged between mould finishing segment length and power of swaging.
(3) relation swaged between mould finishing segment length and power of swaging containing plug is set up.
In order to determine to swage mould finishing segment length containing plug, in addition it is also necessary to set up containing plug swage mould finishing segment length with
Relation between power of swaging.
Strain During Finishing Stage is the calibrated section of product, is mainly used to control the final forming dimension of forging and the straight line of calibration blank
Degree.From the point of view of the effect of Strain During Finishing Stage, the longer the better for Strain During Finishing Stage, but long Strain During Finishing Stage increases the metal that participation deforms, if also
Keep original amount of feeding, it is necessary to increase power of swaging, so as to the load of machine can be increased.When Strain During Finishing Stage reduces, conversely,
Reduction is accomplished by swage power.If not reducing power of swaging, Strain During Finishing Stage is too short to occur hammering and external waviness.
It is 2.42mm containing the amount of feeding that plug is swaged for the present embodiment, finishing segment length and forges the relation between power
Line 2, as shown in Figure 5.
Different as seen from Figure 5 finishing segment length correspondences it is different forge power, both are substantially linear, according to
Fig. 5 finishing segment length and forge the change of power and can fit finishing segment length and forge the functional relation such as formula (2) between power
It is shown
yy2=16.46x-199.35 (2)
In formula, y2To forge the value of power, x is value that unit is the mould finishing segment length of being swaged containing plug of mm.
Finishing segment length and the relation forged between power also show that Strain During Finishing Stage is shorter, and it is smaller radially to forge power, reduce finishing
The length of section is advantageously reduced and forges power.
Step 4, the mould Strain During Finishing Stage limiting length it is determined that shaft part containing plug is swaged.
(4) determine to be swaged mould Strain During Finishing Stage limiting length containing plug according to characteristic of material mechanics of swaging.
The mould finishing segment length of swaging containing plug is also influenceed by material limits, because in blank rotary swaging process containing plug
Axial tension.If tension is excessive, the defects such as crackle of swaging may be caused.Therefore the segment length of finishing containing plug will be swaged
The stress constraint of shaft material.
Selected blank material is steel alloy 25CrMo4 in the present embodiment, and its tensile strength is 630MPa (targets to the maximum
600MPa).The amount of feeding is swaged for 2.42mm containing plug in this example.Four kinds of different finishing segment length 45mm, 50mm, 55mm, 60mm
Under axial tension stress it is as shown in table 2：
Axial tension stress under the different finishing segment length of table 2
| Parameter | Mould 1 | Mould 2 | Mould 3 | Mould 4 |
| Finishing segment length L/mm | 45 | 50 | 55 | 60 |
| Axial tension stress/MPa | 232 | 440 | 469 | 483 |
The relation line 3 of finishing segment length as shown in Figure 6 and axial tension stress can be obtained by data in table 2.
Relation line 3 in Fig. 6.Functional relation during obtaining finishing segment length and forging between axial tension stress
As shown in formula (3)
yy3=9.73 × 1010×0.64x+477.12 (3)
In formula, y3For unit is the axial tension stress value of MPa, x is being swaged mould finishing segment length containing plug for mm for unit
The value of degree.
From finishing segment length and axial tension stress relation line 3, when being swaged containing plug, in the constant situation of other conditions
Under, with the increase of finishing segment length, its corresponding axial stress also increases therewith.Its axle when finishing segment length reaches 60mm
483MPa is reached to stress, in order to ensure axial tension stress can not be excessive in rotary swaging process, actual finishing segment length is preferably little
In 55mm.
Step 5, the mould Strain During Finishing Stage active length it is determined that shaft part containing plug is swaged.
(5) swage neutral surface position, power of swaging and axle product size of swaging are combined, it is determined that suitable Strain During Finishing Stage work length
Degree.
With reference to the relation swaged between mould finishing segment length and neutral surface position containing plug, swaged mould finishing containing plug
Relation between segment length and power of swaging and characteristic of material mechanics of swaging determine to be swaged mould Strain During Finishing Stage limiting length containing plug,
Can determine to be swaged mould Strain During Finishing Stage active length containing plug, the Strain During Finishing Stage active length for meet simultaneously the relation line 1,
The value of the relation line 2 and the relation line 3 and any one x less than the Strain During Finishing Stage limiting length.
For the present embodiment, the surface of swage feature and the axle of swaging containing plug of axle of being swaged according to variable-section variable wall thickness car
Quality requirement determines neutral surface at Strain During Finishing Stage III；When finishing segment length is 45~55mm, power is forged for 550~700KN, axle
It is 230~469MPa to tension, material significantly improves to product end turnover rate, it is relatively low that machine forges power, during forging
Axial tension stress less, will not defect, so when finishing segment length be 45-55mm when, forge power and axial direction in rotary swaging process
Pulling force is suitable, and now product quality can also be significantly improved；When finishing segment length is 55~60mm, power is forged more than 700KN, axle
It is 469~483MPa also to increase to tension, and it is larger that machine forges power, now, if blank material existing defects, forges
During product can produce defect or latent defect because axial tension stress is excessive, so as to reduce product quality.In addition, though smart
The whole bigger finishing effect of segment length is better, but finishing segment length also suffers from the restriction of product concrete structure, can not be long, no
Then influence product adds process.
The effect of embodiment and effect
Variable-section variable wall thickness according to involved by the present embodiment axle of swaging is swaged the determination method of mould finishing segment length, bag
Include following steps：It is determined that the position of the neutral surface in the rotary swaging process of shaft part containing plug；Shaft part containing plug is set up to swage mould finishing
Relation between segment length and neutral surface position；Set up the pass that shaft part containing plug is swaged between mould finishing segment length and power of swaging
System；The mould Strain During Finishing Stage limiting length it is determined that shaft part containing plug is swaged；Produced with reference to face position, power of swaging and axle of swaging in swaging property
Product size, the mould finishing segment length it is determined that suitable shaft part containing plug is swaged.The present embodiment combination car is swaged axle product and rotation
Forging feature, the relation that foundation is swaged between mould finishing segment length and neutral surface position, power of swaging containing plug, the variable cross-section of proposition
Become wall thickness swage axle swage mould finishing segment length determination method to improve hollow shaft quality and performance, and containing plug rotation
There is important Technical Reference to be worth for forging hollow shaft mold design and actual production.
In addition, the present embodiment obtains described being swaged mould finishing segment length and the neutral surface containing plug by emulation experiment
The relation line 1 of position, is easy to be determined come the length of Strain During Finishing Stage according to neutral surface position.
Further, the present embodiment obtains described being swaged containing plug and mould finishing segment length and forges between power by experiment
Relation line 2, be easy to determine according to power is forged the length of Strain During Finishing Stage.
Further, the present embodiment obtains described being swaged mould finishing segment length and axial tension stress containing plug by experiment
Relation curve 3, be easy to determine according to axial tension stress the length of Strain During Finishing Stage.
Above-mentioned implementation method is preferred case of the invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. a kind of variable-section variable wall thickness axle of swaging is swaged the determination method of mould finishing segment length, in the rotation containing plug shaft part
Forging axle is swaged in technique, and the neutral surface position and axle of swaging in the rotary swaging process of quality of being swaged to influence are swaged mould Strain During Finishing Stage
Length is determined, it is characterised in that including：
Step 1, it is determined that the position of the neutral surface in the shaft part containing plug rotary swaging process；
Step 2, sets up the relation that shaft part containing plug is swaged between finishing segment length described in mould and the neutral surface position；
Step 3, sets up the relation that shaft part containing plug is swaged described in mould between finishing segment length and power of swaging；
Step 4, the mould Strain During Finishing Stage limiting length it is determined that shaft part containing plug is swaged；
Step 5, the mould Strain During Finishing Stage active length it is determined that shaft part containing plug is swaged.
2. variable-section variable wall thickness according to claim 1 axle of swaging is swaged the determination method of mould finishing segment length, and it is special
Levy and be：
Wherein, in step 2, determined by any one method in economics analysis method, simulation method, experimental method described containing plug
Shaft part is swaged the relation of mould finishing segment length and neutral surface position.
3. variable-section variable wall thickness according to claim 2 axle of swaging is swaged the determination method of mould finishing segment length, and it is special
Levy and be：
Wherein, the shaft part containing plug for choosing the different finishing segment length of plural number kind respectively by simulation method in step 2 is swaged
Mould, obtains described being swaged mould finishing segment length and the relation line 1 of the neutral surface position, the relation containing plug by experiment
The function expression of line 1 is：
yy1=0.49x+15.02
y1Y-axis coordinate value corresponding to neutral surface, x is value that unit is the mould finishing segment length of being swaged containing plug of mm.
4. variable-section variable wall thickness according to claim 3 axle of swaging is swaged the determination method of mould finishing segment length, and it is special
Levy and be：
Wherein, in step 3, under conditions of the setting amount of feeding of being swaged containing plug, different described of plural number kind is chosen respectively
The shaft part containing plug of finishing segment length is swaged mould, by experiment obtain it is described containing plug swage mould finishing segment length with
The relation line 2 between power is forged, the function expression of the relation line 2 is：
yy2=16.46x-199.35
y2To forge the value of power, x is value that unit is the mould finishing segment length of being swaged containing plug of mm.
5. variable-section variable wall thickness according to claim 4 axle of swaging is swaged the determination method of mould finishing segment length, and it is special
Levy and be：
Wherein, in step 4, identical blank material is chosen, under conditions of the amount of feeding of being swaged containing plug described in setting, is selected respectively
Take plural number and plant the shaft part containing plug of different finishing segment length and swage mould, obtain described being revolved containing plug by experiment
The relation line 3 of forging mould finishing segment length and axial tension stress, the expression formula of the relation line 3 is：
yy3=9.73 × 1010×0.64x+477.12
y3For unit is the axial tension stress value of MPa, x is value that unit is the mould finishing segment length of being swaged containing plug of mm.
6. variable-section variable wall thickness according to claim 5 axle of swaging is swaged the determination method of mould finishing segment length, and it is special
Levy and be：
Wherein, according to the relation line 3, Strain During Finishing Stage limiting length corresponding with the blank material limiting value is obtained.
7. variable-section variable wall thickness according to claim 6 axle of swaging is swaged the determination method of mould finishing segment length, and it is special
Levy and be：
Wherein, in step 5, the Strain During Finishing Stage active length is to meet the relation line 1, the relation line 2 and described simultaneously
The value of relation line 3 and any one x less than the Strain During Finishing Stage limiting length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235442.XA CN106734797B (en) | 2016-12-28 | 2016-12-28 | A kind of variable-section variable wall thickness axis of swaging is swaged the determination method of mold finishing segment length |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611235442.XA CN106734797B (en) | 2016-12-28 | 2016-12-28 | A kind of variable-section variable wall thickness axis of swaging is swaged the determination method of mold finishing segment length |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158518A (en) * | 2018-08-30 | 2019-01-08 | 上海理工大学 | Constant velocity shaft is swaged the determination method of axial feed technological parameter containing plug |
| CN113305253A (en) * | 2021-06-30 | 2021-08-27 | 武汉科技大学 | Design method for inlet curved surface of rotary forging hammer die |
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| JP2004283855A (en) * | 2003-03-20 | 2004-10-14 | Sumitomo Metal Ind Ltd | Forging method |
| CN103861987A (en) * | 2014-03-31 | 2014-06-18 | 上海纳铁福传动系统有限公司 | Method for designing hollow shaft rotary swaging mold |
| CN105710273A (en) * | 2016-01-18 | 2016-06-29 | 上海理工大学 | Method for determining rotary swaging circle-feeding technological parameters of constant velocity shaft of car |
| CN105772621A (en) * | 2016-01-18 | 2016-07-20 | 上海理工大学 | Determination method for coreless rod rotary forging radial feeding process parameters of car universal transmission shaft |
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Patent Citations (4)
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| JP2004283855A (en) * | 2003-03-20 | 2004-10-14 | Sumitomo Metal Ind Ltd | Forging method |
| CN103861987A (en) * | 2014-03-31 | 2014-06-18 | 上海纳铁福传动系统有限公司 | Method for designing hollow shaft rotary swaging mold |
| CN105710273A (en) * | 2016-01-18 | 2016-06-29 | 上海理工大学 | Method for determining rotary swaging circle-feeding technological parameters of constant velocity shaft of car |
| CN105772621A (en) * | 2016-01-18 | 2016-07-20 | 上海理工大学 | Determination method for coreless rod rotary forging radial feeding process parameters of car universal transmission shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158518A (en) * | 2018-08-30 | 2019-01-08 | 上海理工大学 | Constant velocity shaft is swaged the determination method of axial feed technological parameter containing plug |
| CN113305253A (en) * | 2021-06-30 | 2021-08-27 | 武汉科技大学 | Design method for inlet curved surface of rotary forging hammer die |
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| CN106734797B (en) | 2019-06-04 |
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