CN208131791U - A kind of Correction Die of non-planar crankshaft forging - Google Patents
A kind of Correction Die of non-planar crankshaft forging Download PDFInfo
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- CN208131791U CN208131791U CN201820305248.2U CN201820305248U CN208131791U CN 208131791 U CN208131791 U CN 208131791U CN 201820305248 U CN201820305248 U CN 201820305248U CN 208131791 U CN208131791 U CN 208131791U
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Abstract
The utility model discloses a kind of Correction Dies of non-planar crankshaft forging, belong to the Correction Die technical field of crankshaft forging.A kind of Correction Die of non-planar crankshaft forging of the utility model, including upper die and lower die, the bottom of upper mold are provided with the upper impression of correction, and the lower impression of correction is provided at the top of lower die；After upper mold and lower die molding, impression and the lower impression of correction form correction impression in the correction.Using a kind of Correction Die of non-planar crankshaft forging of the utility model, the non-planar crankshaft forging forged for the forging method using nonplanar die joint, after trimming process, the Correction Die of the utility model can be corrected crankshaft forging, to eliminate the bending deformation problem of crankshaft forging after trimming process.
Description
Technical field
The utility model relates to a kind of Correction Dies of non-planar crankshaft forging, belong to the Correction Die technology of crankshaft forging
Field.
Background technique
Crankshaft is the critical component in engine.It bears the power that connecting rod transmits, and is transformed into torque and passes through crankshaft
It exports and other parts on engine is driven to work.Crankshaft is by the centrifugal force of gyrating mass, the gas inertia power of mechanical periodicity
With the collective effect of reciprocal inertia force, crankshaft is made to bear the effect of flexion torsion load.Therefore it is required that crankshaft has enough intensity
And rigidity, journal surface need are wear-resisting, work is uniform, balance is good.
It is well-known（Referring to Fig. 1 to Fig. 4）, crankshaft（Crankshaft forging 1）Including front end axis 11, trunnion 12, rod journal
13, crank wall 14, balance weight 15, rear axle 16.For crank wall 14 and balance weight 15, crank wall 14 is for connecting main shaft
Neck 12 and pitman shaft 13, balance weight 15 are used to balance centrifugal intertia force and its torque that each parts generate.One rod journal 13
A crank throw is constituted with the crank wall 14 and trunnion 12 at its both ends.
Crankshaft is divided into plane crankshaft and non-planar crankshaft, and the main distinction of the two is the phase angle of the rod journal of crankshaft
ω is different, and phase angle ω refers to：From the axis direction of crankshaft, adjacent rod journal（Crank throw in other words）Between folder
Angle.Plane crankshaft（Or it is a word crankshaft）Rod journal phase angle ω be 180 °.The rod journal of non-planar crankshaft
Phase angle ω is not equal to 180 °；Such as cross crankshaft（Or 90 are cried to write music axis）, the phase angle ω of the rod journal of cross crankshaft
It is 90 °；Certainly, according to design requirement, the phase angle ω of the rod journal of crankshaft may be 120 °（I.e. 120 write music axis）.It is right
In the manufacture of crankshaft, frequently with forging mold crankshaft forging forging.
In the prior art, since plane crankshaft is more simple compared to the space structure of non-planar crankshaft, for plane crankshaft
For, the forging method forging of plane die joint is generallyd use, i.e. the die joint of forging mold is plane.For non-planar crankshaft
Forging, when using nonplanar die joint mode（For example the die joint includes for the die joint of ladder planar）It directly forges non-flat
When the crankshaft forging of face, since die joint is more complex, the die parting line 17 of non-planar crankshaft forging and the shape of overlap（Overlap：Forging
When making crankshaft forging, crankshaft forging will generate overlap at die parting line 17）Also just complex（In space curve shape, such as Fig. 1
To shown in Fig. 4）, carrying out trimming process（The process for cutting off overlap）When, it is irregular curved that crankshaft forging is easy to produce bending etc.
Song deformation, such as the phase angle ω of the rod journal of crankshaft forging is changed, the axial straightness of crankshaft forging and
The front end axis of crankshaft forging, trunnion, rear axle diameter change, especially forging makes in batch, crankshaft forging
Dimensional uniformity it is poor.This just gives subsequent finishing step to bring extreme difficulties, also increases adding for crankshaft product
Work scrappage.
Therefore, the non-planar crankshaft forging forged for the above-mentioned forging method using nonplanar die joint（Such as ten
Word crankshaft）, after trimming process, it is extremely urgent to design a kind of straightening die that can correct the non-planar crankshaft forging, to solve
The problem of bending deformation certainly occurred after trimming process, the crankshaft forging dimensional uniformity for forging batch is good, is conducive to subsequent
Crankshaft forging finishing step, can be improved the qualification rate of crankshaft product.
Summary of the invention
The goal of the invention of the utility model is：In view of the above problems, a kind of non-planar crankshaft forging is provided
Correction Die, for the non-planar crankshaft forging that the forging method using nonplanar die joint is forged, after trimming process, this
The Correction Die of utility model can be corrected crankshaft forging, be asked with eliminating the bending deformation of crankshaft forging after trimming process
Topic.
The technical solution adopted in the utility model is as follows：
A kind of Correction Die of non-planar crankshaft forging, including upper die and lower die, the bottom of upper mold are provided with correction upper mold
Thorax is provided with the lower impression of correction at the top of lower die；After upper mold and lower die molding, impression is formed with lower impression is corrected in the correction
Correct impression.
For the non-planar crankshaft forging that the forging method using nonplanar die joint is forged, after trimming process, by
It is easy to produce bending deformation in crankshaft forging, after the Correction Die of the utility model, Correction Die can be to crankshaft forging
It is corrected, to eliminate the bending deformation of crankshaft forging.For example phase angle ω, the song of the rod journal of crankshaft forging can be corrected
The axial straightness of forging shaft and the front end axis of crankshaft forging, trunnion, rear axle diameter.It will be evident that straightening die
Thorax is adapted with crankshaft forging.
A kind of Correction Die of non-planar crankshaft forging of the utility model, the contour edge of impression is higher than in the correction
The die parting line of crankshaft forging.After crankshaft forging correction, being conducive to, which is detached from crankshaft forging, corrects upper impression.
Further, the distance a for the die parting line that the contour edge of impression is higher than crankshaft forging in the correction is 5mm-
10mm。
A kind of Correction Die of non-planar crankshaft forging of the utility model, the contour edge of impression is lower than under the correction
The die parting line of crankshaft forging.After crankshaft forging correction, being conducive to, which is detached from crankshaft forging, corrects lower impression.
Further, the distance b for the die parting line that the contour edge of impression 31 is lower than crankshaft forging under the correction is 5mm-
10mm。
A kind of Correction Die of the non-planar crankshaft forging of the utility model, along the axis direction of correction impression, correction
The profile of impression and the side of crankshaft forging have fit-up gap.After crankshaft forging correction, be conducive to that crankshaft forging is made to be detached from school
Just upper impression and the lower impression of correction.
Further, the fit-up gap e of the side of the profile and crankshaft forging of the correction impression is 0.8mm-1.5mm.
A kind of Correction Die of non-planar crankshaft forging of the utility model, is provided between the upper mold and lower die and is used for
The guiding mechanism of upper mold and lower die molding guiding.Be conducive to upper mold and lower die molds, and can be avoided Correction Die and generate mistake
It moves, influences the correction mass of crankshaft forging.
Further, the guiding mechanism includes being fixedly arranged on the guide post of upper mold bottom and being set to leading at the top of lower die
Xiang Kong, the guide post can move up and down along the hole wall of pilot hole.
Further, the guide post fixing sleeve is loaded on upper mold bottom and guide post runs through upper mold, and the pilot hole runs through
Lower die.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
1, the Correction Die of a kind of non-planar crankshaft forging of the utility model, after trimming process, the utility model
Correction Die can be corrected crankshaft forging, to eliminate the bending deformation problem of crankshaft forging after trimming process, be conducive to
The finishing step of subsequent crankshaft forging improves the qualification rate of crankshaft product.
2, in correction impression contour edge be higher than crankshaft forging die parting line design, be conducive to be detached from crankshaft forging
Impression in correction；The contour edge of impression is conducive to keep crankshaft forging de- lower than the design of the die parting line of crankshaft forging under correcting
It leaves school and just descends impression.
3, the side of the profile and crankshaft forging that correct impression has the design of fit-up gap, is conducive to keep crankshaft forging de-
It leaves school and just goes up impression and the lower impression of correction.
4, the design of guiding mechanism, is conducive to upper mold and lower die molds, and can be avoided Correction Die and generate offsetting, shadow
Ring the correction mass of crankshaft forging.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of crankshaft forging;
Fig. 2 is a kind of front view of crankshaft forging;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the right view of Fig. 2;
Fig. 5 is the structural schematic diagram of upper mold;
Fig. 6 is the structural schematic diagram of lower die;
Fig. 7 is structural schematic diagram when crankshaft forging is adapted with impression under the correction of lower die;
Fig. 8 is the top view of the Correction Die of the utility model;
Fig. 9 is the A-A of Fig. 8 to sectional view;
Figure 10 is the B-B direction sectional view of Fig. 8;
Figure 11 is the C-C of Fig. 8 to sectional view；
Figure 12 is enlarged drawing at the D of Figure 11.
It is marked in figure：1- crankshaft forging, the front end 11- axis, 12- trunnion, 13- rod journal, 14- crank wall, 15- balance
Block, 16- rear axle, 17- die parting line, 2- upper mold, in 21- correction impression, 22- guide post, 3- lower die, 31- correct lower impression,
The contour edge of impression is higher than the distance of the die parting line 17 of crankshaft forging on 32- pilot hole, a- correction, b- corrects the wheel of lower impression
Wide edge lower than crankshaft forging die parting line distance, e- correction impression profile and crankshaft forging side fit-up gap,
ω-phase angle.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figure 1 to 11, the Correction Die of a kind of non-planar crankshaft forging of the present embodiment, including upper mold 2 is under
Mould 3, the bottom of upper mold 2 are provided with the upper impression 21 of correction, and the top of lower die 3 is provided with the lower impression 31 of correction；Upper mold 2 and lower die 3
After molding, impression 21 and the lower impression 31 of correction form correction impression in the correction.
For the non-planar crankshaft forging that the forging method using nonplanar die joint is forged, after trimming process, by
It is easy to produce bending deformation in crankshaft forging, after the Correction Die of the utility model, Correction Die can be to crankshaft forging
It is corrected, to eliminate the bending deformation of crankshaft forging.For example phase angle ω, the song of the rod journal of crankshaft forging can be corrected
The axial straightness of forging shaft and the front end axis of crankshaft forging, trunnion, rear axle diameter.It will be evident that straightening die
Thorax with（Standard）Crankshaft forging is adapted.
Further optimization based on the present embodiment, as shown in Figures 9 to 11, in another embodiment, in the correction
The contour edge of impression 21 is higher than the die parting line 17 of crankshaft forging.After crankshaft forging correction, be conducive to that crankshaft forging is made to be detached from school
Just upper impression 21.
Further, in another embodiment, the contour edge of impression 21 divides mould higher than crankshaft forging in the correction
The distance a of line 17 is 5mm-10mm.It is alternative, in one embodiment, distance a be 5mm, 6 mm, 7 mm, 8mm,
9mm or 10mm.Certainly it can also be lower than 5mm from a.
Further optimization based on the present embodiment, as shown in Figures 9 to 11, in another embodiment, under the correction
The contour edge of impression 31 is lower than the die parting line 17 of crankshaft forging.After crankshaft forging correction, be conducive to that crankshaft forging is made to be detached from school
Just descend impression 31.
Further, in another embodiment, the contour edge of impression 31 divides mould lower than crankshaft forging under the correction
The distance b of line 17 is 5mm-10mm.It is alternative, in one embodiment, distance b be 5mm, 6 mm, 7 mm, 8mm,
9mm or 10mm.Certainly it can also be lower than 5mm from b.
Further optimization based on the present embodiment, as is illustrated by figs. 11 and 12, in another embodiment, along correction impression
Axis direction on, correct impression profile and crankshaft forging side have fit-up gap.After crankshaft forging correction, be conducive to
It is detached from crankshaft forging and corrects upper impression 21 and the lower impression 31 of correction.Alternative, the profile and crankshaft for correcting impression are forged
The balance weight of part, the side of crank wall have fit-up gap.Further, the profile and front end axis, rear axle of impression are corrected
End face also has fit-up gap.In other words, alternative, each side of the profile and crankshaft forging that correct impression all has
There is fit-up gap.
Further, in another embodiment, the fit-up gap e of the side of the profile and crankshaft forging of the correction impression
For 0.8mm-1.5mm.It is alternative, in one embodiment, fit-up gap e be 0.8mm, 0.9mm, 1.0mm, 1.1mm,
1.2mm, 1.3mm, 1.4mm or 1.5mm.
Further optimization based on the present embodiment is provided between the upper mold 2 and lower die 3 in another embodiment
Guiding mechanism for upper mold 2 and the molding guiding of lower die 3.Be conducive to upper mold 2 and lower die 3 molds, and can be avoided straightening die
Tool generates offsetting, influences the correction mass of crankshaft forging.
Further, as shown in Figure 5 and Figure 6, in another embodiment, the guiding mechanism includes being fixedly arranged on 2 bottom of upper mold
The guide post 22 in portion and the pilot hole 32 for being set to 3 top of lower die, the guide post 22 can be made up and down along the hole wall of pilot hole 32
Movement.In one embodiment, guide post 22 has 4, is distributed on 4 corners of 2 bottom of upper mold respectively, corresponding guiding
Hole 32 has 4, is distributed on 4 corners at 3 top of lower die respectively.
Further, in another embodiment, 22 fixing sleeve of guide post is loaded on 2 bottom of upper mold and guide post 22 is passed through
Mould 2 is put on, the pilot hole 32 runs through lower die 3.Alternative, the fixing sleeve by the way of interference fit of guide post 22 is loaded on
2 bottom of upper mold；Certainly, the assembly method of guide post 22 and upper mold 2 can also use bolt or the connection type that is screwed, or weldering
What is connect is fixedly connected with mode.
In conclusion a kind of Correction Die of non-planar crankshaft forging using the utility model, after trimming process, this
The Correction Die of utility model can be corrected crankshaft forging, be asked with eliminating the bending deformation of crankshaft forging after trimming process
Topic is conducive to the finishing step of subsequent crankshaft forging, improves the qualification rate of crankshaft product.The Correction Die of the utility model
Especially suitable for the forging of non-planar crankshaft forging, such as correction cross crankshaft forging（90 write music forging shaft）.Certainly, this is practical
Novel forging mold can be used for correcting the non-planar crankshaft forging of other specifications, it can also be used to correcting plane crankshaft forging.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of Correction Die of non-planar crankshaft forging, it is characterised in that：Including upper mold（2）And lower die（3）, upper mold（2）'s
Bottom is provided with the upper impression of correction（21）, lower die（3）Top be provided with the lower impression of correction（31）；Upper mold（2）With lower die（3）It closes
After mould, impression in the correction（21）With the lower impression of correction（31）Form correction impression；
The upper mold（2）With lower die（3）Between be provided with for upper mold（2）With lower die（3）Mold the guiding mechanism of guiding.
2. a kind of Correction Die of non-planar crankshaft forging as described in claim 1, it is characterised in that：Impression in the correction
（21）Contour edge be higher than crankshaft forging die parting line（17）.
3. a kind of Correction Die of non-planar crankshaft forging as claimed in claim 2, it is characterised in that：Impression in the correction
（21）Contour edge be higher than crankshaft forging die parting line（17）Distance a be 5mm-10mm.
4. a kind of Correction Die of non-planar crankshaft forging as described in claim 1, it is characterised in that：Impression under the correction
（31）Contour edge be lower than crankshaft forging die parting line（17）.
5. a kind of Correction Die of non-planar crankshaft forging as claimed in claim 4, it is characterised in that：Impression under the correction
（31）Contour edge be lower than crankshaft forging die parting line（17）Distance b be 5mm-10mm.
6. a kind of Correction Die of non-planar crankshaft forging as described in claim 1, it is characterised in that：Along the axis of correction impression
On line direction, the side of the profile and crankshaft forging that correct impression has fit-up gap.
7. a kind of Correction Die of non-planar crankshaft forging as claimed in claim 6, it is characterised in that：The correction impression
The fit-up gap e of the side of profile and crankshaft forging is 0.8mm-1.5mm.
8. a kind of Correction Die of non-planar crankshaft forging as described in claim 1, it is characterised in that：The guiding mechanism packet
It includes and is fixedly arranged on upper mold（2）The guide post of bottom（22）And it is set to lower die（3）The pilot hole at top（32）, the guide post
（22）It can be along pilot hole（32）Hole wall move up and down.
9. a kind of Correction Die of non-planar crankshaft forging as claimed in claim 8, it is characterised in that：The guide post（22）
Fixing sleeve is loaded on upper mold（2）Bottom and guide post（22）Through upper mold（2）, the pilot hole（32）Through lower die（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820305248.2U CN208131791U (en) | 2018-03-06 | 2018-03-06 | A kind of Correction Die of non-planar crankshaft forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820305248.2U CN208131791U (en) | 2018-03-06 | 2018-03-06 | A kind of Correction Die of non-planar crankshaft forging |
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| Publication Number | Publication Date |
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| CN208131791U true CN208131791U (en) | 2018-11-23 |
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ID=64288056
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| CN201820305248.2U Active CN208131791U (en) | 2018-03-06 | 2018-03-06 | A kind of Correction Die of non-planar crankshaft forging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739075A (en) * | 2018-12-26 | 2019-05-10 | 厦门理工学院 | A kind of clock and watch wheel automatic assembling |
-
2018
- 2018-03-06 CN CN201820305248.2U patent/CN208131791U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109739075A (en) * | 2018-12-26 | 2019-05-10 | 厦门理工学院 | A kind of clock and watch wheel automatic assembling |
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