CN109848344A - Knuckle ear end face and pan portion near-net-shape forging technology - Google Patents
Knuckle ear end face and pan portion near-net-shape forging technology Download PDFInfo
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- CN109848344A CN109848344A CN201910286829.5A CN201910286829A CN109848344A CN 109848344 A CN109848344 A CN 109848344A CN 201910286829 A CN201910286829 A CN 201910286829A CN 109848344 A CN109848344 A CN 109848344A
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- face
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- knuckle
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Abstract
The present invention relates to spindle technical fields, more particularly to a kind of knuckle ear end face and pan portion near-net-shape forging technology, it is by the knuckle blank after blocking, finish-forging is carried out using horizontal forging, then overlap is cut off, by ear end face when excision overlap, pan portion end face cuts off certain thickness, then pressure-sizing is carried out to blank, the trapezoidal protrusion of ear end face and pan portion endface is pressed into plane respectively, the present invention is by excessively cutting off overlap after forging, so that ear end face, pan portion endface size is less than the size of finished product, then recycle pressure-sizing directly in ear end face, pan portion endface is formed and the consistent plane of finished product, so that the position is subsequent not to need reprocessing plane, reduce manufacturing procedure.
Description
Technical field
The present invention relates to technical fields, forge work more particularly to a kind of knuckle ear end face and pan portion near-net-shape
Skill.
Background technique
Spindle is important security personnel's part of a receiving front-wheel weight, it is connected to the steering system of automobile, braking
System, driving system are one of the critical components in automobile front axle assembly, are the strong guarantees of safety in running car,
Belong to the extremely complex part of shape in automotive chassis components, it is desirable that it is with very high intensity.Spindle is mainly by three
Part forms: bar portion, ring flange (pan portion) and ear's (upper ear, lower ear), flange brace rod portion and ear, knuckle are generally logical
Forging processing is crossed, common forging method is horizontal forging, also needs to be machined out multiple faces after the completion of forging, carry out
Multiple processes such as drilling and milling, mill, wherein ear end face needs to process knuckle arm connecting hole, which needs to be processed into plane, disk
End surface (referring to close to the face of ear side) needs drill centers, which is also required to process a plane.And it was forging
Cheng Zhong is provided with draft angle in position at two at this for the ease of demoulding, and therefore, when forging needs the ruler of knuckle blank
Very little amplification forms a subtriangular protrusion in ear end face and pan portion endface, in machining by the convex portion
Cutting, formed plane, due to draft angle be it is necessary, the cutting process be also it is necessary, this results in manufacturing procedure more.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to and provide a kind of knuckle ear end face and pan portion near net
Forging technology is shaped, by excessively cutting off overlap after forging, so that ear end face, pan portion endface size are less than the ruler of finished product
It is very little, then recycle pressure-sizing directly in ear end face, the formation of pan portion endface and the consistent plane of finished product, so that the position is subsequent
Reprocessing plane is not needed, manufacturing procedure is reduced.
The technical solution adopted by the present invention to solve the technical problems is: a kind of knuckle ear end face and pan portion near net at
Knuckle blank after blocking is carried out finish-forging using horizontal forging, then cuts off overlap, cut off overlap by shape forging technique
When ear end face, pan portion end face cut off into certain thickness, pressure-sizing then is carried out to blank, by ear end face and pan portion endface
Trapezoidal protrusion is pressed into plane respectively.
Preferably, when finish-forging, ear is along the direction length reduction perpendicular to ear end face, and pan portion is along perpendicular to pan portion end face
Direction length reduction, the length of diminution is less than the thickness that knuckle blank is generated by pattern draft.
Preferably, trimming, coining step are in hot lower progress.
Preferably, when finish-forging, damping platform is provided with around knuckle blank.
Preferably, the pan portion end face is end face of the pan portion close to ear side.
Preferably, ear's inner face, ear's outer end face are cut off into certain thickness when cutting off overlap, by blank in ear inner end
At face, ear's outer end face because draft angle generate triangular-section be cut to it is trapezoidal, then to blank carry out pressure-sizing, by ear inner end
Trapezoidal protrusion at face, ear's outer end face is pressed into plane respectively.
Preferably, when cutting off overlap, triangle section that blank is generated in ear end face and pan portion endface by draft angle
Face is cut to trapezoidal.
The beneficial effects of the present invention are: a kind of knuckle ear end face and pan portion near-net-shape forging technology, by blocking
Knuckle blank afterwards carries out finish-forging using horizontal forging, then cuts off overlap, by ear end face, pan portion end when cutting off overlap
Face cuts off certain thickness, then carries out pressure-sizing to blank, the trapezoidal protrusion of ear end face and pan portion endface is pressed into respectively
Plane, the present invention is by excessively cutting off overlap after forging, so that ear end face, pan portion endface size are less than the size of finished product,
Then recycle pressure-sizing directly in ear end face, the formation of pan portion endface and the consistent plane of finished product, so that the position is subsequent not
It needs to reprocess plane, reduces manufacturing procedure.
Detailed description of the invention
Fig. 1 be the prior art knuckle finish-forging after blank structural schematic diagram.
Fig. 2 is knuckle finish-forging die type chamber figure of the invention.
Fig. 3 is the partial sectional view in Fig. 2 at A-A.
Fig. 4 is the partial sectional view in Fig. 2 at B-B.
Fig. 5 is the structural schematic diagram of blank after knuckle finish-forging of the invention.
Fig. 6 be in Fig. 5 C to partial schematic diagram.
Fig. 7 is the structural schematic diagram after knuckle trimming of the invention after pressure-sizing.
Fig. 8 be in Fig. 7 D to partial schematic diagram.
Description of symbols:
1 --- bar portion 2 --- pan portion
21 --- pan portion end face 3 --- ears
31 --- ear end face 32 --- ear's inner faces
33 --- ear's outer end faces 4 --- damp platform.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments, is not reality of the invention
Scope limitation is applied in this.
As Figure 1-Figure 8, the knuckle ear end face of the present embodiment and pan portion near-net-shape forging technology, round steel warp
Knuckle blank after crossing heating, jumping-up, dead man, blocking is carried out finish-forging using horizontal forging, is demoulded after finish-forging due to forging
Reason, forms a circle die parting line in the plane where 1 axis of bar portion, stub axially bored line, and overlap is from the die parting line to outside
Extend, only by cutting burrs when cutting overlap in the prior art, then again cuts the part that the requirements such as ear end face are planes
Processing is cut, plane is processed into.The technical program carries out excessive excision when cutting off overlap, i.e., not only cuts off overlap, and cut off
Position is adjusted to blank direction, so that ear end face 31, pan portion end face 21 are cut off certain thickness, in this way, mould is divided in the position
Part metals under line and die parting line are removed, and excessive excision here refers not only to opposite overlap excess, further,
Refer to that the size of opposite knuckle finished product is excessive, for example, ear's length of blank is less than ear's length of finished product after cutting overlap,
Then pressure-sizing is carried out to blank, the trapezoidal protrusion at ear end face 31 and pan portion end face 21 is pressed into plane respectively, in order to more
Mend excessive excision when cutting overlap, when pressure-sizing, needs to flow metal to excess excision position so that size after pressure-sizing and
Finished size is consistent, does not need to carry out machining in this way, the position is subsequent, reduces the workload of machining.
Draft angle is necessary when forging, so centainly will form the circle protrusion using die parting line as vertex, the lug boss
It point can not cut such as no requirement (NR), but portion is needed to be processed into plane such as ear end face 31, pan portion end face 21,
Therefore the position excess metal must remove.And since forging precision is limited, need to reserve certain thickness machining allowance, this Shen
Please excessively cut off before this, and precision is higher when pressure-sizing, the metal that other positions can be made extra to the portion extrusion excessively cut off,
Make up the excess cut-out, so both in the position formed with the consistent size of finished product, do not need to be processed again, reduce yet
The machining allowance at other positions, so that other position cutting outputs are less.
Further, for the ease of cutting off overlap, when finish-forging, ear 3 is along the direction length contracting perpendicular to ear end face 31
Small, pan portion 2 is less than knuckle blank due to pattern draft along the direction length reduction perpendicular to pan portion end face 21, the length of diminution
The thickness of generation is more advantageous to cutting in this way, the amount of metal excessively cut off when excision overlap is less.Further, overlap is cut off
When, by blank at ear end face 31 and pan portion end face 21 because draft angle generate triangular-section be cut to it is trapezoidal, although i.e. mistake
Amount cutting, but cutting output is less, and metal flow amount is also less when subsequent pressure-sizing.
Further, trimming, coining step are in hot lower progress.
Further, as shown in Figure 2, Figure 3, Figure 4, when finish-forging, damping platform 4 is provided with around knuckle blank, metal fills
It is flowed after full type chamber to damping platform 4.
In the present invention, the pan portion end face 21 is pan portion 2 close to the end face of ear side, and for pan portion 2 close to bar portion 1
Side, subsequent to be also required to be processed into plane, position processing plane is relatively easy to, can not scheme according to the invention carry out
Processing, can also be with scheme according to the invention, first excessive cutting, then pressure-sizing is at plane, but due to the position plane roughness
It is required that it is higher, it still needs to finish.
It similarly, can also be by ear's inner face 32, ear when cutting off overlap for ear's inner face 32, ear's outer end face 33
Outer end face 33 cuts off certain thickness, by blank because of the triangle of draft angle generation at ear's inner face 32, ear's outer end face 33
Section be cut to it is trapezoidal, then to blank carry out pressure-sizing, the trapezoidal protrusion at ear's inner face 32, ear's outer end face 33 is pressed respectively
Plane is made.
In Fig. 7, the part that requires machining for of part of dotted line was drawn along knuckle one week.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (7)
1. knuckle ear end face and pan portion near-net-shape forging technology, it is characterised in that: by the knuckle blank after blocking, adopt
Finish-forging is carried out with horizontal forging, then cuts off overlap, ear end face, pan portion end face are cut off into certain thickness when cutting off overlap, so
Pressure-sizing is carried out to blank afterwards, the trapezoidal protrusion of ear end face and pan portion endface is pressed into plane respectively.
2. knuckle ear according to claim 1 end face and pan portion near-net-shape forging technology, it is characterised in that: finish-forging
When, ear reduces along the direction length reduction perpendicular to ear end face, pan portion along the direction length reduction perpendicular to pan portion end face
Length be less than the thickness that generates by pattern draft of knuckle blank.
3. knuckle ear according to claim 1 end face and pan portion near-net-shape forging technology, it is characterised in that: cut
Side, coining step are in hot lower progress.
4. knuckle ear according to claim 1 end face and pan portion near-net-shape forging technology, it is characterised in that: finish-forging
When, damping platform is provided with around knuckle blank.
5. knuckle ear according to claim 1 end face and pan portion near-net-shape forging technology, it is characterised in that: described
Pan portion end face is end face of the pan portion close to ear side.
6. knuckle ear according to claim 1 end face and pan portion near-net-shape forging technology, it is characterised in that: excision
Ear's inner face, ear's outer end face are cut off into certain thickness when overlap, by blank because pulling out at ear's inner face, ear's outer end face
Modular angle generate triangular-section be cut to it is trapezoidal, then to blank carry out pressure-sizing, by the ladder at ear's inner face, ear's outer end face
Shape protrusion is pressed into plane respectively.
7. knuckle ear according to claim 1 end face and pan portion near-net-shape forging technology, it is characterised in that: excision
It is when overlap, blank is trapezoidal because the triangular-section that draft angle generates is cut in ear end face and pan portion endface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286829.5A CN109848344A (en) | 2019-04-11 | 2019-04-11 | Knuckle ear end face and pan portion near-net-shape forging technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286829.5A CN109848344A (en) | 2019-04-11 | 2019-04-11 | Knuckle ear end face and pan portion near-net-shape forging technology |
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| CN109848344A true CN109848344A (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910286829.5A Pending CN109848344A (en) | 2019-04-11 | 2019-04-11 | Knuckle ear end face and pan portion near-net-shape forging technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798418A (en) * | 2021-08-29 | 2021-12-17 | 湖北三环锻造有限公司 | Method for improving forging quality of steering knuckle disk part |
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| US20080034830A1 (en) * | 2006-08-14 | 2008-02-14 | Tidwell Charles S | Systems and Methods for Reducing Metal Fatigue in Forged Parts |
| KR20090078601A (en) * | 2008-01-15 | 2009-07-20 | (주)협진단철 | Yoke manufacturing method |
| CN101607294A (en) * | 2009-07-08 | 2009-12-23 | 湖北三环锻造有限公司 | Medium and heavy automobile knuckle stamp forging extruding compound technology |
| CN201410537Y (en) * | 2009-03-05 | 2010-02-24 | 芜湖三联锻造有限公司 | Resistance platform structure of semi-hermetic forging mould |
| CN102489659A (en) * | 2011-11-16 | 2012-06-13 | 日照市七星汽车部件有限公司 | Method for forging steering knuckle |
| CN103042145A (en) * | 2012-12-25 | 2013-04-17 | 国营第六一六厂 | Precision die forging process for wrenches |
| CN104874719A (en) * | 2015-06-05 | 2015-09-02 | 湖北三环锻造有限公司 | Process for vertically obliquely forging and machining steering knuckles of automobiles |
| CN109093041A (en) * | 2018-07-26 | 2018-12-28 | 庆铃汽车（集团）有限公司 | Knuckle composite die and technique |
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2019
- 2019-04-11 CN CN201910286829.5A patent/CN109848344A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080034830A1 (en) * | 2006-08-14 | 2008-02-14 | Tidwell Charles S | Systems and Methods for Reducing Metal Fatigue in Forged Parts |
| KR20090078601A (en) * | 2008-01-15 | 2009-07-20 | (주)협진단철 | Yoke manufacturing method |
| CN201410537Y (en) * | 2009-03-05 | 2010-02-24 | 芜湖三联锻造有限公司 | Resistance platform structure of semi-hermetic forging mould |
| CN101607294A (en) * | 2009-07-08 | 2009-12-23 | 湖北三环锻造有限公司 | Medium and heavy automobile knuckle stamp forging extruding compound technology |
| CN102489659A (en) * | 2011-11-16 | 2012-06-13 | 日照市七星汽车部件有限公司 | Method for forging steering knuckle |
| CN103042145A (en) * | 2012-12-25 | 2013-04-17 | 国营第六一六厂 | Precision die forging process for wrenches |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798418A (en) * | 2021-08-29 | 2021-12-17 | 湖北三环锻造有限公司 | Method for improving forging quality of steering knuckle disk part |
| CN113798418B (en) * | 2021-08-29 | 2023-12-08 | 湖北三环锻造有限公司 | Method for improving forging quality of steering knuckle disc part |
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Application publication date: 20190607 |