CN108160895B - Horizontal method for forging and molding and mold for forming of the long axis class with shaft shoulder forging - Google Patents
Horizontal method for forging and molding and mold for forming of the long axis class with shaft shoulder forging Download PDFInfo
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- CN108160895B CN108160895B CN201711414822.4A CN201711414822A CN108160895B CN 108160895 B CN108160895 B CN 108160895B CN 201711414822 A CN201711414822 A CN 201711414822A CN 108160895 B CN108160895 B CN 108160895B
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- forging
- shaft shoulder
- molding
- bead
- long axis
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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
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Horizontal method for forging and molding and mold for forming the invention discloses a kind of long axis class with shaft shoulder forging, wherein the following steps are included: the type that blank is placed on lower film is intracavitary, upper mold moves downward under external force to be closed and compresses with lower film forming method；The head that beater mechanism acts on blank forms the shaft shoulder, completes forging molding；The mold cavity surface of upper mold and lower film is uniformly provided with the pit for preventing blank in beater mechanism effect lower slider.Above-mentioned horizontal method for forging and molding, increase the frictional force between mold and blank, prevent blank from sliding under the action of beater mechanism, sliding trace is left on discontented and dimension overproof, forging products to solve the problems, such as to fill at the forging products shaft shoulder caused by sliding, the defects of also avoiding folding, the recess of the junction generation of the shaft shoulder and long axis simultaneously, to improve the production efficiency of above-mentioned forging, machine-finish allowance is reduced, increases the comprehensive performance of forging, service life extends.
Description
Technical field
The present invention relates to the field shaping techniques of long-axis forging, particularly, are related to a kind of long axis class with shaft shoulder forging
Horizontal method for forging and molding and mold for forming.
Background technique
For large-scale long shaft forging with the shaft shoulder using more in aero-engine, this forging is often in engine
Crucial forging needs to bear during the work time biggish torque, therefore higher to its mechanical property requirements.As shown in Fig. 1
For the forging schematic diagram of paddle shaft, since forging overall dimensions are larger, and the size difference of the shaft shoulder and long axis is also larger, in freedom
During forging molding, the junction of the shaft shoulder and long axis be easy to appear folding, recess the defects of.In actual forging molding process
In, due to needing biggish shaping load when shaft shoulder molding, blank can be there is a phenomenon where sliding, in forging products in a mold
The phenomenon that leaving the trace of sliding, and filling insatiable hunger can be generated at the shaft shoulder of forging.Due to the presence of these defects, cause to forge
The production efficiency of part is low, stock utilization is low, machine-finish allowance is big；In addition forging is easy in subsequent mechanical processing process
It leads to the problem of what the shaft shoulder was cut off with long axis junction metal streamline, reduces the comprehensive performance of forging, service life also reduces.
Summary of the invention
Horizontal method for forging and molding and mold for forming the present invention provides a kind of long axis class with shaft shoulder forging, to solve
Insatiable hunger is filled at the shaft shoulder present in above-mentioned forging process for fuel forming process, sliding trace and the shaft shoulder and length are left in forging products
The technical issues of axis junction folds, is recessed.
The technical solution adopted by the invention is as follows:
A kind of horizontal method for forging and molding of the long axis class with shaft shoulder forging, comprising the following steps: blank is placed on lower film
Type it is intracavitary, upper mold moves downward under external force to be closed and compresses with lower film；Beater mechanism acts on the head shape of blank
At the shaft shoulder, forging molding is completed；The mold cavity surface of upper mold and lower film is uniformly provided with for preventing blank under beater mechanism effect
The pit of sliding.
Further, upper mold and lower film are carrying out bead to mold cavity surface respectively before to form pit.
Further, thickness, that is, pit depth of shot-peening layer is 0.1~0.15mm.
Further, shot-peening coverage rate is 200%~250%, and shot peening strength is F60A~F80A.
Further, the cast steel ball or ceramic pellet that hardness HRC is 50~65 are selected in bead.
Further, the granularity of bullet is 30~50 mesh in bead.
Further, injection direction and the angle of horizontal direction are 45 °~135 ° in bead.
Further, when bead, first with the intensity shot-peening of F60A~F80A, then with the intensity spray of F20A~F30A
Ball.
According to another aspect of the present invention, a kind of horizontal forging molding mould of the long axis class with shaft shoulder forging is additionally provided
Tool, above-mentioned mold include upper mold and lower film, and the mold cavity surface of upper mold and lower film is uniformly provided with above-mentioned pit respectively.
The invention has the following advantages:
Horizontal method for forging and molding of the long axis class provided by the invention with shaft shoulder forging, in the mold cavity surface of upper mold and lower film
It is uniformly provided with pit, increases the frictional force between mold and blank, prevents blank from sliding under the action of beater mechanism, thus
Solve during horizontal forging molding because at the forging products shaft shoulder caused by the sliding between blank and mold filling it is discontented and
The problem of sliding trace is left on dimension overproof, forging products, while also avoiding the folding of the junction generation of the shaft shoulder and long axis
The defects of folding, being recessed reduces machine-finish allowance, makes the comprehensive performance liter of forging to improve the production efficiency of above-mentioned forging
High, service life extends.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is paddle shaft forging structural schematic diagram；
Fig. 2 is horizontal forging molding schematic diagram of the long axis class with shaft shoulder forging of the preferred embodiment of the present invention；
Fig. 3 is horizontal forging molding mold schematic diagram of the long axis class with shaft shoulder forging of the preferred embodiment of the present invention；
Fig. 4 is horizontal forging molding mold cavity surface of the long axis class with shaft shoulder forging of the preferred embodiment of the present invention
Effect picture.
Description of symbols:
10, blank；11, the shaft shoulder；12, long axis；20, upper mold；21, lower die；22, pit areas；30, beater mechanism.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig. 2, the preferred embodiment of the present invention provides a kind of horizontal forging molding side of the long axis class with shaft shoulder forging
Method, comprising the following steps: the type that blank 10 is placed on lower die 21 is intracavitary, and upper mold 20 moves downward under external force and lower die
21 are closed and compress；The head that beater mechanism 30 acts on blank 10 forms the shaft shoulder 11, completes forging molding；Upper mold 20 and lower die
21 mold cavity surface is uniformly provided with the pit for preventing blank 10 from moving under the effect of beater mechanism 30.
Horizontal method for forging and molding of the long axis class with shaft shoulder forging includes the type chamber that blank 10 is put into lower die 21；In equipment
Under drive, upper mold 20 is moved downward, and is closed and is compressed with lower die 21；Beater mechanism 30, which travels forward, forms 10 head of blank.
In forming process, upper mold 20 and lower die 21 need biggish pressing force to guarantee to clamp blank 10, but large-scale long shaft forging
Molding needs biggish molding load, and blank 10 is caused to slide in forming process.For long axis class band shaft shoulder forging products sheet
For body, the defects of junction of the shaft shoulder 11 and long axis 12 is natively easy to appear folding, recess, blank in forming process in addition
10 sliding in a mold is more easier to generate the problems such as forging shaft shoulder 11 fills insatiable hunger, folding, recess, in addition produce in forging
The trace of sliding is left on product, and then forging products is caused to be scrapped.
Above-mentioned forming method is uniformly provided with pit in the mold cavity surface of upper mold 20 and lower die 21, increases mold and blank
Frictional force between 10 prevents blank 10 from sliding under the action of beater mechanism 30, to solve horizontal forging molding process
It is filled on discontented and dimension overproof, forging products at the forging products shaft shoulder 11 caused by the middle sliding because between blank 10 and mold
The defects of leaving the problem of sliding trace, while also avoiding the folding of the junction generation of the shaft shoulder 11 and long axis 12, recess, from
And the production efficiency of above-mentioned forging is improved, machine-finish allowance is reduced, increases the comprehensive performance of forging, service life extends.
Preferably, bead is being carried out to mold cavity surface respectively using preceding referring to Fig. 3 and Fig. 4, upper mold 20 and lower die 21
To form pit.This preferred embodiment is by the way of bead, and the temperature of mold is at 200 DEG C or so, applicable shot-peening
Reason forms subtle pit in the mold cavity surface of upper mold 20 and lower die 21, and pit is evenly distributed on the surface of type cavity region, improves
The roughness on mold cavity surface prevents base so that the frictional force between blank 10 and mold be made to greatly increase in forming process
Expect 10 slidings intracavitary in type, can well solve and fill discontented and dimension overproof, forging products at the forging products shaft shoulder 11
On leave sliding trace the problem of.In addition, mold cavity surface can also be discharged because of machine by bead mold cavity surface
Existing residual stress after tool processing and quenching treatment, makes mold cavity surface generate reinforcing, to improve the wearability of mold
And service life.
Have the characteristics that streamline is smooth, more accurate, higher quality using the forging that above-mentioned forming method is produced, together
When stock utilization and production efficiency also greatly improve.
In above-mentioned forming method, the roughness of die surface can also be increased by way of digging pit, although also same
Sample has the effect for increasing and rubbing, but cannot discharge the residual stress on mold cavity surface, and die life can not extend, and can not
Guarantee that pit is uniform, is also easy to impact the production of forging.
Preferably, thickness, that is, pit depth of shot-peening layer is 0.1~0.15mm.To shot-peening layer when above-mentioned bead
Thickness further limits, since it is considered that the frictional force that needs with shaft shoulder forging and mold cavity surface of large-scale long shaft class compared with
Greatly, it can guarantee that forging will not be in the intracavitary sliding of type when beater mechanism 30 acts on, (μ is friction system according to frictional force f=μ N
Number, N are the pressure of equipment) numerical value of μ can be calculated, to obtain the optimum thickness value of shot-peening layer.Using above-mentioned shot-peening layer
Thickness is capable of increasing friction, realizes forging not in the intracavitary sliding of type, to avoid the forging shaft shoulder 11 from filling insatiable hunger and leave cunning
The problem of dynamic trace.
Preferably, shot-peening coverage rate is 200%~250%, and shot peening strength is F60A~F80A.Shot-peening coverage rate is surface
The area that bullet pit occupies and the ratio by spray plane product.Need to realize a balance between shot-peening coverage rate and shot peening strength,
The granularity of bullet is bigger, and impact energy is larger, then shot peening strength is also bigger, but the coverage rate of shot-peening reduces.Using above-mentioned shot-peening
Coverage rate and shot peening strength make the mold cavity surface of mold generate equally distributed fine and closely woven subtle pit, increase forging and mould
Have the frictional force of mold cavity surface, sliding of the forging in die cavity during forging molding can be effectively prevented from.
Preferably, the cast steel ball or ceramic pellet that hardness HRC is 50~65 are selected in bead.This preferred embodiment
In, mold materials 5CrMnMo, the hardness HRC of mold cavity surface is 45~50.Root in the horizontal method for forging and molding of above-mentioned forging
According to the cast steel ball or ceramic pellet of the preferably above-mentioned hardness of the hardness on mold cavity surface, the mold cavity surface after making bead reaches
Expected effect.
Preferably, the granularity of bullet is 30~50 mesh in bead.It is excellent according to above-mentioned shot-peening coverage rate and shot peening strength
The bullet of larger granularity is selected, but the size selection of bullet is also related to the shape of mold cavity, the considerations of according to various aspects, preferably
30~50 mesh of granularity can meet the requirement of bead well.
Preferably, injection direction and the angle of horizontal direction are 45 °~135 ° in bead.At the shot-peening of above-mentioned use
The spray angle of reason can guarantee the high coverage rate of mold cavity surface, and multiple shot-peening is needed just to be able to achieve.
Preferably, when bead, first with the intensity shot-peening of F60A~F80A, then with the intensity shot-peening of F20A~F30A.
Low-intensity shot-peening is carried out after the first high-intensitive shot-peening of the bead mode of above-mentioned use, the pit of mold cavity surface can be made uniformly thin
It is close, and improve shot-peening efficiency.
In the present embodiment, at least partly region is through bead formation pit area on the mold cavity surface of upper mold 20 and lower die 21
Domain 22, it is preferable that the in axial direction upper interval of pit areas 22 setting on mold cavity surface, referring to Fig. 3, mold cavity surface and long axis 12
Corresponding first end, second end region are through bead, at least provided with one section of non-bead between first end and second end
Annular region, the annular region of non-bead is for determining material, and annular region is not contacted with blank 10, can make first
End preferably compresses blank 10 with second end region, and blank 10 is further prevented to slide under the action of beater mechanism 30.
According to another aspect of the present invention, a kind of horizontal forging molding mould of the long axis class with shaft shoulder forging is additionally provided
Tool, above-mentioned mold include upper mold 20 and lower die 21, and upper mold 20 and the mold cavity surface of lower die 21 are uniformly provided with above-mentioned pit respectively.On
Horizontal forging molding mold of the long axis class with shaft shoulder forging is stated, the problem of sliding in mold cavity according to blank 10, in type
Pit is arranged in chamber surface, to increase the friction between blank 10 and mold cavity surface, solves the problems, such as that blank 10 slides, to solve
Forging filling insatiable hunger leaves the defects of sliding trace and recess, improves the yield of forging products, improves the production of forging molding
Efficiency prolongs the service life simultaneously.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of horizontal method for forging and molding of long axis class with shaft shoulder forging, which comprises the following steps:
The type that blank (10) is placed on lower die (21) is intracavitary, and upper mold (20) moves downward and the lower die under external force
(21) it is closed and compresses；The head that beater mechanism (30) acts on the blank (10) forms the shaft shoulder (11), completes forging molding；
The mold cavity surface of the upper mold (20) and the lower die (21) is uniformly provided with for preventing the blank (10) in the punching
Hit the pit of mechanism (30) effect lower slider；
The pit is to carry out bead to the mold cavity surface of the upper mold (20) and the lower die (21) respectively using preceding
It is formed by subtle pit；
The mold cavity surface of the upper mold (20) and the lower die (21) first end corresponding with long axis (12), second end region pass through
Bead, at least provided with the annular region of one section of non-bead between first end and second end, the non-bead
Annular region is for determining material.
2. horizontal method for forging and molding of the long axis class according to claim 1 with shaft shoulder forging, which is characterized in that
The depth of the i.e. described pit of the thickness for the shot-peening layer that the bead obtains is 0.1~0.15mm.
3. horizontal method for forging and molding of the long axis class according to claim 2 with shaft shoulder forging, which is characterized in that
The shot-peening coverage rate of the bead is 200%~250%, and shot peening strength is F60A~F80A.
4. horizontal method for forging and molding of the long axis class according to claim 3 with shaft shoulder forging, which is characterized in that
The cast steel ball or ceramic pellet that hardness HRC is 50~65 are selected in the bead.
5. horizontal method for forging and molding of the long axis class according to claim 3 with shaft shoulder forging, which is characterized in that
The granularity of bullet is 30~50 mesh in the bead.
6. horizontal method for forging and molding of the long axis class according to any one of claim 1 to 5 with shaft shoulder forging, feature
It is,
Injection direction and the angle of horizontal direction are 45 °~135 ° in the bead.
7. horizontal method for forging and molding of the long axis class according to any one of claim 1 to 5 with shaft shoulder forging, feature
It is,
When the bead, first with the intensity shot-peening of F60A~F80A, then with the intensity shot-peening of F20A~F30A.
8. a kind of horizontal forging molding mold of long axis class with shaft shoulder forging, which is characterized in that
The mold includes upper mold (20) and lower die (21), and the upper mold (20) and the mold cavity surface difference of the lower die (21) are equal
Even to be equipped with pit, the pit is to spray respectively to the mold cavity surface of the upper mold (20) and the lower die (21) using preceding
Ball processing is formed by subtle pit, the mold cavity surface of the upper mold (20) and the lower die (21) corresponding with long axis (12) the
One end, second end region are through bead, at least provided with the annulus of one section of non-bead between first end and second end
The annular region in domain, the non-bead is for determining material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711414822.4A CN108160895B (en) | 2017-12-22 | 2017-12-22 | Horizontal method for forging and molding and mold for forming of the long axis class with shaft shoulder forging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711414822.4A CN108160895B (en) | 2017-12-22 | 2017-12-22 | Horizontal method for forging and molding and mold for forming of the long axis class with shaft shoulder forging |
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| Publication Number | Publication Date |
|---|---|
| CN108160895A CN108160895A (en) | 2018-06-15 |
| CN108160895B true CN108160895B (en) | 2019-09-20 |
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| CN201711414822.4A Active CN108160895B (en) | 2017-12-22 | 2017-12-22 | Horizontal method for forging and molding and mold for forming of the long axis class with shaft shoulder forging |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1389922A1 (en) * | 1985-02-27 | 1988-04-23 | Предприятие П/Я А-1950 | Method of upsetting rod-like articles having polyhedral heads |
| CN101111329A (en) * | 2005-01-31 | 2008-01-23 | 昭和电工株式会社 | Upsetting method and upsetting apparatus |
| CN101215680A (en) * | 2008-01-08 | 2008-07-09 | 上海大学 | Aluminum alloy die-casting die steel surface shot blasting strengthening treatment method |
| JP2009006338A (en) * | 2007-06-27 | 2009-01-15 | Daido Steel Co Ltd | Method for manufacturing rod-like forged part with deformed flange |
| CN201572875U (en) * | 2009-12-08 | 2010-09-08 | 黄石哈特贝尔精密锻造有限公司 | Forging die for first-generation hub bearing outer ring double-face forming technique |
-
2017
- 2017-12-22 CN CN201711414822.4A patent/CN108160895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1389922A1 (en) * | 1985-02-27 | 1988-04-23 | Предприятие П/Я А-1950 | Method of upsetting rod-like articles having polyhedral heads |
| CN101111329A (en) * | 2005-01-31 | 2008-01-23 | 昭和电工株式会社 | Upsetting method and upsetting apparatus |
| JP2009006338A (en) * | 2007-06-27 | 2009-01-15 | Daido Steel Co Ltd | Method for manufacturing rod-like forged part with deformed flange |
| CN101215680A (en) * | 2008-01-08 | 2008-07-09 | 上海大学 | Aluminum alloy die-casting die steel surface shot blasting strengthening treatment method |
| CN201572875U (en) * | 2009-12-08 | 2010-09-08 | 黄石哈特贝尔精密锻造有限公司 | Forging die for first-generation hub bearing outer ring double-face forming technique |
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| Publication number | Publication date |
|---|---|
| CN108160895A (en) | 2018-06-15 |
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