CN210676798U - Novel finish forging die for transmission shaft disc flange fork forging - Google Patents
Novel finish forging die for transmission shaft disc flange fork forging Download PDFInfo
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- CN210676798U CN210676798U CN201921410161.2U CN201921410161U CN210676798U CN 210676798 U CN210676798 U CN 210676798U CN 201921410161 U CN201921410161 U CN 201921410161U CN 210676798 U CN210676798 U CN 210676798U
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Abstract
Novel finish forging die of transmission shaft disc flange fork forging, including last forging die and the lower forging die that is located under the forging die, the inside lower die cavity that is provided with the open top in lower forging die, lower die cavity top-down is disk lower half die cavity, two fork die cavities in proper order, be provided with the boss between the well lower part of two fork die cavities, curved surface transition between boss top and the fork die cavity surface, go up the inside open disk first die cavity in bottom that is provided with of forging die, disk first die cavity and disk lower half die cavity correspond from top to bottom. The utility model changes the horizontal mode into the vertical mode, changes the parting surface of the disc flange fork into the disc part, and horizontally divides the disc from the middle position of the disc part, and the top surface of the upper half cavity of the disc part and the bottom surface of the lower half cavity of the disc part are both in a horizontal structure, thereby effectively reducing the processing amount of the two side surfaces of the disc part; the groove of the disk part is forged during the finish forging operation, thereby saving raw materials and creating favorable conditions for the subsequent metal processing procedures.
Description
Technical Field
The utility model belongs to the technical field of the automotive industry, concretely relates to novel finish forging mould of transmission shaft disc flange fork forging.
Background
The traditional forging process of the transmission shaft disc flange yoke sequentially comprises the steps of blanking, heating, cavity blanking, finish forging and trimming, wherein the following problems exist in the finish forging process:
1. the structure of the existing transmission shaft disc flange yoke is shown in fig. 1 and fig. 2, and comprises a disc part 1 and two fork parts 2, a parting surface 13 of the disc flange yoke is vertically symmetrical along a plane where a center line of the fork parts 2 is located, namely, a finish forging die cavity inside an upper forging die 4 and a lower forging die 5 of a finish forging die is vertically symmetrical, and the finish forging die is shown in fig. 3, in order to ensure that a finish forged piece after finish forging can be smoothly demoulded, the surfaces of two sides of the disc part 1 of the finish forging piece have a 5-degree drawing slope, the disc part 1 of the disc flange yoke forging piece needs to be processed with a part (shown in a position in fig. 2) with the drawing slope on two sides of the disc part 1 after the forging process is finished, so that the processing amount of the two sides of the disc part 1 is increased, and the processing.
2. Due to the assembly requirement, a groove 3 (shown by a dotted line at a position B in fig. 2) needs to be processed at the center of the disc part 1 of the finished disc flange yoke, and because the final forging of the disc flange yoke is divided into the upper and lower symmetrical dies, the groove at the center of the disc part 1 cannot be forged, so that the groove needs to be processed during the metal processing, the metal processing is difficult, and the process cost of the whole processing process is increased.
3. The sectional area difference of the fork part 2 and the disc part 1 of the disc flange yoke final forging piece is large, wherein the sectional area of the disc part 1 is larger than that of the blank, in order to meet the molding of the disc part 1, a part of the blank needs to be gathered on the disc part 1 of the disc flange yoke by utilizing a cavity blank manufacturing process, in order to improve the material utilization rate, the length of the blank manufacturing piece 20 is 20mm shorter than the length of a finish forging cavity of a finish forging die, a worker puts the blank manufacturing piece 20 into the finish forging cavity according to own experience in the forging process, and the placement position of the blank manufacturing piece 20 in the front-back direction is deviated; the shape of the blank 20 is a solid of revolution, a platform is arranged between the cavities of the two fork parts 2, the blank cannot be guaranteed to be just placed in the middle of the finish forging cavity (as shown in fig. 3), the blank can be deviated in the finish forging cavity due to vibration of equipment during striking, the defects of folding, insufficient forging and the like of the finish forging can be caused when the blank is deviated, and the rejection rate of the finish forging is high in the production process.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a novel forging die that finishes of transmission shaft disc flange fork forging of the machining volume of reducible metalworking, reduce cost, reduction finish forging rejection rate.
In order to solve the technical problem, the utility model adopts the following technical scheme: novel finish forging die of transmission shaft disc flange fork forging, including last forging die and the lower forging die that is located under the forging die, the inside lower die cavity that is provided with the open top in lower forging die, lower die cavity top-down is disk lower half die cavity, two fork die cavities in proper order, be provided with the boss between the well lower part of two fork die cavities, curved surface transition between boss top and the fork die cavity surface, go up the inside open disk first die cavity in bottom that is provided with of forging die, disk first die cavity and disk lower half die cavity correspond from top to bottom.
The top surface of the upper half cavity of the tray part and the bottom surface of the lower half cavity of the tray part are both of horizontal structures.
A step of curved surface transition is formed between the lower half cavity of the disc part and the two fork part cavities.
The center of the upper half cavity of the disc part of the upper forging die is provided with a convex column, the lower end of the convex column is lower than the lower surface of the upper forging die, and the convex column is in a cone structure with a thick upper part and a thin lower part.
The circumferential surfaces of the upper half cavity and the lower half cavity of the disc part are provided with draft structures.
Adopt above-mentioned technical scheme, the utility model discloses following technological effect has:
1. determining the position of the parting surface: the utility model changes the horizontal mode into the vertical mode, the parting surface of the disc flange fork is changed into the disc part from the horizontal plane position where the central line of the fork part is positioned, the parting surface is horizontally split from the middle position of the disc part, the drawing inclination is designed only by the circumferences of the upper half cavity of the disc part and the lower half cavity of the disc part, the top surface of the upper half cavity of the disc part and the bottom surface of the lower half cavity of the disc part are both horizontal structures, and the processing amount of the two side surfaces of the disc part is effectively reduced; in addition, because the convex column is arranged, the groove of the disc part can be forged during finish forging operation, thereby saving raw materials and creating favorable conditions for subsequent metal processing procedures.
2. In the aspect of positioning: the fork portion of disc flange fork is whole in the lower die cavity of forging die down, and the preforging die utensil equally adopts with the utility model discloses a finish forging die utensil basically the same structure, blank behind the cinder is got rid of in the upset can be accurate unanimous place die cavity down under the unanimous condition of assurance upset length to the blank all has the location in four directions all around lower die cavity, and the workman need not consider when placing the blank and places the position, and the forging that forges out does not have folding and discontented phenomenon, improves product yield and production efficiency.
3. The product quality aspect is as follows: the disc part is changed from the die parting surface of the disc flange yoke, the trimming male die and the trimming female die which are adopted in the trimming process are circular, the trimming die machining precision and the production efficiency are improved, when workers operate the trimming process, the forged piece is easily placed into the trimming female die, the trimming male die and the trimming stress surface of the forged piece are the whole disc part, the stress surface is large, the forged piece is not easy to deform, the quality of the forged piece is obviously improved, and the service life of the trimming die is greatly prolonged.
Drawings
FIG. 1 is a schematic structural view of a prior art disc flange yoke final forging;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a prior art disc flange yoke finish forging die;
fig. 4 is a schematic view of the present invention;
FIG. 5 is a cross-sectional view C-C of FIG. 4;
FIG. 6 is a schematic structural view of a disc flange yoke forging after finish forging using the present invention;
fig. 7 is a cross-sectional view taken along line D-D of fig. 6.
Detailed Description
As shown in fig. 4-7, the utility model discloses a novel finish forging die of transmission shaft disc flange fork forging, including last forging die 4 and the lower forging die 5 that is located under forging die 4, the inside open lower die cavity in top that is provided with of lower forging die 5, lower die cavity top-down is pan portion lower half die cavity 6 in proper order, two fork portion die cavities 7, be provided with boss 8 between the well lower part of two fork portion die cavities 7, curved surface transition between boss 8 top and the fork portion die cavity 7 surface, go up the inside open first die cavity 9 of pan portion in bottom that is provided with of forging die 4, first die cavity 9 of pan portion and pan portion lower half die cavity 6 correspond from top to bottom.
The top surface of the disc part upper half part cavity 9 and the bottom surface of the disc part lower half part cavity 6 are both horizontal structures 10.
A step 11 of curved surface transition is formed between the lower half cavity 6 of the disc part and the two fork part cavities 7.
The center of the upper half part cavity 9 of the disc part of the upper forging die 4 is provided with a convex column 12, the lower end of the convex column 12 is lower than the lower part surface of the upper forging die 4, and the convex column 12 is in a cone structure with a thick upper part and a thin lower part.
The circumferential surfaces of the disc upper half part cavity 9 and the disc lower half part cavity 6 are both provided with a drawing slope structure.
The utility model discloses following technological effect has:
1. determination of the position of the parting plane 13: the utility model changes the horizontal mode into vertical mode, the parting surface of the disc flange fork is changed into the disc part 1 from the horizontal plane position of the central line of the fork part 2, the parting surface is horizontally parted from the middle position of the disc part 1, the drawing inclination is designed only by the circumferences of the upper half part cavity 9 of the disc part and the lower half part cavity 6 of the disc part, the top surface of the upper half part cavity 9 of the disc part and the bottom surface of the lower half part cavity 6 of the disc part are both horizontal structures 10, and the processing amount of the two side surfaces of the disc part 1 is effectively reduced; in addition, because the convex column 12 is arranged, the groove 3 of the disc part 1 can be forged in the finish forging operation, thereby saving raw materials and creating favorable conditions for the subsequent metal processing procedures.
2. In the aspect of positioning: 2 fork parts of disc flange fork are all in the lower die cavity of lower forging die 5, and the preforging die utensil adopts equally with the utility model discloses a finish forging die utensil basically the same structure, blank after the cinder is got rid of in the upset can be accurate unanimous place die cavity down under the unanimous condition of assurance upset length to the blank all has the location in four directions all around lower die cavity, and the workman need not consider when placing the blank and places the position, and the forging that forges out does not have folding and discontent phenomenon, improves product yield and production efficiency.
3. The product quality aspect is as follows: the position of the parting surface 13 of the disc flange fork is changed into the disc part 1, the trimming male die and the trimming female die which are adopted in the trimming process are circular, the precision and the production efficiency of the trimming die are improved, when a worker operates the trimming process, a forge piece is easily placed into the trimming female die, the trimming male die and the trimming stress surface of the forge piece are the whole disc part 1, the stress surface is large, the forge piece is not easy to deform, the quality of the forge piece is obviously improved, and the service life of the trimming die is greatly prolonged.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (5)
1. Novel finish forging mould of transmission shaft disc flange fork forging, including last forging die and the lower forging die that is located under the forging die, its characterized in that: the lower forging die is internally provided with a lower cavity with an open top, the lower cavity is sequentially provided with a disc lower half cavity and two fork cavities from top to bottom, a boss is arranged between the middle lower parts of the two fork cavities, the top of the boss and the surfaces of the fork cavities are in curved surface transition, the upper forging die is internally provided with a disc upper half cavity with an open bottom, and the disc upper half cavity and the disc lower half cavity are in up-and-down correspondence.
2. The novel finish forging die for the transmission shaft disc flange fork forging piece according to claim 1, wherein: the top surface of the upper half cavity of the tray part and the bottom surface of the lower half cavity of the tray part are both of horizontal structures.
3. The novel finish forging die for the transmission shaft disc flange fork forging piece according to claim 1, wherein: a step of curved surface transition is formed between the lower half cavity of the disc part and the two fork part cavities.
4. The novel finish forging die for the transmission shaft disc flange fork forging piece according to claim 1, wherein: the center of the upper half cavity of the disc part of the upper forging die is provided with a convex column, the lower end of the convex column is lower than the lower surface of the upper forging die, and the convex column is in a cone structure with a thick upper part and a thin lower part.
5. The novel finish forging die for the transmission shaft disc flange fork forging piece according to claim 1, wherein: the circumferential surfaces of the upper half cavity and the lower half cavity of the disc part are provided with draft structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410161.2U CN210676798U (en) | 2019-08-28 | 2019-08-28 | Novel finish forging die for transmission shaft disc flange fork forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410161.2U CN210676798U (en) | 2019-08-28 | 2019-08-28 | Novel finish forging die for transmission shaft disc flange fork forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210676798U true CN210676798U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921410161.2U Active CN210676798U (en) | 2019-08-28 | 2019-08-28 | Novel finish forging die for transmission shaft disc flange fork forging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210676798U (en) |
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2019
- 2019-08-28 CN CN201921410161.2U patent/CN210676798U/en active Active
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