CN215830988U - Novel structure of transmission shaft flange fork forging flash - Google Patents
Novel structure of transmission shaft flange fork forging flash Download PDFInfo
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- CN215830988U CN215830988U CN202121274515.2U CN202121274515U CN215830988U CN 215830988 U CN215830988 U CN 215830988U CN 202121274515 U CN202121274515 U CN 202121274515U CN 215830988 U CN215830988 U CN 215830988U
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Abstract
The novel structure of the flange fork forging flash of the transmission shaft comprises a front plane flash and a rear plane flash which are connected with a disc part, and a side plane flash, a front vertical flash and a rear vertical flash which are connected with the outer sides of two fork ear parts, wherein the front plane flash, the rear plane flash and the side plane flash are all parallel to a horizontal plane, the upper end of the front vertical flash is connected with the front end of the side plane flash, the upper end of the rear vertical flash is connected with the rear end of the side plane flash, the front vertical flash and the rear vertical flash are symmetrically arranged in the front-back direction, and the included angle beta between the plane where the front vertical flash and the rear vertical flash are located and the vertical plane where the center line between the two fork ear parts is located is 50-60 degrees. The utility model improves the die life and the forging quality of the flange yoke, reduces the production process cost of the flange yoke, and ensures the reliability and the quality of the trimming.
Description
Technical Field
The utility model belongs to the field of automobile accessory manufacturing, and particularly relates to a novel structure of a flange of a transmission shaft flange fork forging.
Background
The forging process of the transmission shaft flange fork forging belongs to open die forging, namely, flash forging is adopted, in order to meet the forming requirement of the forging, a flash bin is designed along the parting surface of the circumference of a finish forging die cavity, so that the resistance of metal flowing out of the die cavity can be increased, and the die cavity is forced to be filled with the metal; accommodating excess metal; and the flash plays a role in buffering during forging, so that the striking of the upper die and the lower die is weakened, and the die is prevented from collapsing and cracking. The flange structure of the traditional flange fork forging is shown in fig. 1 and fig. 2, and comprises a front plane flange 2 and a rear plane flange 3 connected with a disc part 1, and a side plane flange 5, a front vertical flange 6 and a rear vertical flange 7 connected with the outer sides of two fork ear parts 4, wherein the front plane flange 2, the rear plane flange 3 and the side plane flange 5 are all parallel to a horizontal plane, the planes of the front vertical flange 6 and the rear vertical flange 7 are all perpendicular to the vertical direction of a central line between the two fork ear parts 4, a plane is formed between the flange plane of the forging after die parting and a die cavity body, no separation or step is formed between the two planes, as shown by a part a in fig. 1, the left side of a dotted line is a fork ear part 4 of the forging, the right side of the dotted line is a front vertical flange 6, and the front side of the fork ear part 4 and the front vertical flange 6 are located on the same plane, so as to cause the following problems:
firstly, the abrasion degree of a die cavity corresponding to a fork lug part 4 at a position A in the figure 1 is inconsistent with that of a die surface corresponding to a front vertical flash 6, after the die is abraded, the die cavity at a dotted line at the position A becomes a wavy surface, the surface quality of a corresponding forged piece does not meet the requirements of customers, and the forged piece is scrapped;
secondly, after the die is worn, the resistance of the redundant blank is different when the redundant blank is discharged out of the die cavity, and part of metal flows out of the die cavity to be increased, so that metal backflow is caused, and the metal at the die parting position of the forge piece can be folded;
the utility model discloses a forging piece, including the fork ear 4 front side and the rear side, the side cut terrace die downstream contacts with the forging, the side cut terrace die can have certain oscillating quantity in the process of downstream, and 4 front sides of fork ear and the preceding vertical overlap 6 of forging back forging are located the coplanar, 4 rear sides of fork ear and the 7 same planes of the vertical overlap in back, this kind of structure makes the forging piece be difficult to the location in the left and right directions, the side cut terrace die can touch the forging piece when cutting edge, to cut partially or make the overlap warp, cause the forging piece to scrap or the side cut equipment damages when serious.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a novel structure of the flange of the transmission shaft flange fork forging, which can prolong the service life of a die, improve the quality of a forging and facilitate the positioning during the trimming operation.
In order to solve the technical problems, the utility model adopts the following technical scheme: the novel structure of the flange fork forging flash of the transmission shaft comprises a front plane flash and a rear plane flash which are connected with a disc part, and a side plane flash, a front vertical flash and a rear vertical flash which are connected with the outer sides of two fork ear parts, wherein the front plane flash, the rear plane flash and the side plane flash are all parallel to a horizontal plane, the upper end of the front vertical flash is connected with the front end of the side plane flash, the upper end of the rear vertical flash is connected with the rear end of the side plane flash, the front vertical flash and the rear vertical flash are symmetrically arranged in the front-back direction, and the included angle beta between the plane where the front vertical flash and the rear vertical flash are located and the vertical plane where the center line between the two fork ear parts is located is 50-60 degrees.
The included angle beta is 55 degrees.
The rear side edge of the front vertical flash is connected with the front side surface of the fork ear part to form an obtuse included angle, and the front side edge of the rear vertical flash is connected with the middle of the rear side surface of the fork ear part to form an obtuse included angle.
The lower end of the rear side edge of the front vertical flash and the lower end of the front side edge of the rear vertical flash are connected with the edge of the disk part.
By adopting the technical scheme, in order to improve the service life of a die and the quality of a forged piece of the flange yoke, reduce the production process cost of the flange yoke and modify the burr structure of the flange yoke, the utility model improves the plane where the front vertical burr on the front side and the rear vertical burr on the rear side of the yoke lug of the forged piece of the flange yoke from the vertical plane where the middle line between the two yoke lugs is vertical to the vertical plane where the front vertical burr and the rear vertical burr are located and the vertical plane where the middle line between the two yoke lugs is vertical to form an included angle beta of 50-60 degrees, preferably 55 degrees. The structure has the following technical effects after improvement:
1) the part of the convex die of the flange fork forging piece between the front vertical flash and the rear vertical flash is thickened, the strength of a pressing block of the upper forging die is improved, the upper forging die is more durable, the service life of the die is prolonged, and the cost of a single die is reduced;
2) the front vertical flash and the rear vertical flash play a positioning role in the front and rear directions and the left and right directions during the trimming process, so that the consistency of the flange fork forging in the trimming cavity is ensured, the forging is not easy to move during trimming, the reliability of trimming is ensured, the consistency of the peripheral burrs of the trimmed forging is uniform, and the consistency of the appearance quality of the forging is high;
3) the rear side edge of the front vertical flash after forging and die splitting is connected with the front side surface of the fork ear part to form an obtuse included angle, the front side edge of the rear vertical flash is connected with the middle of the rear side surface of the fork ear part to form an obtuse included angle, and the lower end of the rear side edge of the front vertical flash and the lower end of the front side edge of the rear vertical flash are connected with the edge of the disc part; the improvement of the structure ensures that the abrasion degree of the convex module of the upper forging die and the abrasion degree of the concave module of the lower forging die of the forging die on the die cavity of the die are basically consistent with the abrasion degree of the die surface corresponding to the vertical flash, so that the die cavity is prevented from generating a wavy surface, and the condition that the die parting position of the forging is folded due to metal backflow is avoided.
Drawings
FIG. 1 is a schematic perspective view of a prior art flashing structure of a transmission shaft flange yoke forging;
FIG. 2 is a top view of a prior art drive shaft flange yoke forging flashing arrangement;
FIG. 3 is a schematic perspective view of the present invention;
fig. 4 is a top view of the present invention.
Detailed Description
As shown in fig. 3 and 4, the novel structure of the transmission shaft flange fork forging flash comprises a front plane flash 2 and a rear plane flash 3 connected with a disc part 1, and a side plane flash 5, a front vertical flash 6 and a rear vertical flash 7 connected with the outer sides of two fork ear parts 4, wherein the front plane flash 2, the rear plane flash 3 and the side plane flash 5 are all parallel to a horizontal plane, the upper end of the front vertical flash 6 is connected with the front end of the side plane flash 5, the upper end of the rear vertical flash 7 is connected with the rear end of the side plane flash 5, the front vertical flash 6 and the rear vertical flash 7 are symmetrically arranged in front and back, the included angle β between the plane where the front vertical flash 6 and the rear vertical flash 7 are located and the vertical plane where the center line between the two fork ear parts 4 is located is 50-60 °, and the included angle β is preferably 55 °.
The rear side edge of the front vertical flash 6 is connected with the front side surface of the fork ear part 4 to form an obtuse included angle, and the front side edge of the rear vertical flash 7 is connected with the middle of the rear side surface of the fork ear part 4 to form an obtuse included angle.
The lower end of the rear side edge of the front vertical flange 6 and the lower end of the front side edge of the rear vertical flange 7 are connected with the edge of the disc part 1.
In order to improve the die life and the forging quality of the flange yoke, reduce the production process cost of the flange yoke and modify the flash structure of the flange yoke, the utility model improves the plane of the front vertical flash 6 at the front side and the rear vertical flash 7 at the rear side of the fork ear part 4 of the flange yoke forging from a vertical plane perpendicular to the center line between the two fork ear parts 4 into a vertical plane with an included angle beta of 50-60 degrees, preferably 55 degrees, between the plane of the front vertical flash 6 and the rear vertical flash 7 and the vertical plane perpendicular to the center line between the two fork ear parts 4. The structure has the following technical effects after improvement:
1) the part of the convex die of the flange fork forging piece between the front vertical flash edge 6 and the rear vertical flash edge 7 is thickened, the strength of a pressing block of the upper forging die is improved, the convex die is more durable, the service life of the die is prolonged, and the cost of a single die is reduced. The parameters of the preferred 55-degree included angle have the advantages of improving the strength and not excessively increasing the manufacturing cost of the die;
2) during the trimming process, the front vertical flash 6 and the rear vertical flash 7 play a role in positioning in the front and rear direction and the left and right direction, the consistency of the flange fork forging piece placed in the trimming cavity is ensured, the forging piece is not easy to move during trimming, the reliability of trimming is ensured, the consistency of the peripheral burrs of the trimmed forging piece is uniform, and the consistency of the appearance quality of the forging piece is high;
3) the rear side edge of the front vertical flash 6 after forging and die splitting is connected with the front side surface of the fork ear part 4 to form an obtuse included angle, the front side edge of the rear vertical flash 7 is connected with the middle of the rear side surface of the fork ear part 4 to form an obtuse included angle, and the lower ends of the rear side edge of the front vertical flash 6 and the front side edge of the rear vertical flash 7 are connected with the edge of the disc part 1; the improvement of the structure is that the abrasion degree of the male die and the female die of the forging die on the die surface of the die cavity corresponding to the vertical flash is basically kept consistent, so that the die cavity is prevented from generating a wavy surface, and the condition that the die parting position of the forge piece is folded due to metal backflow is avoided.
Tests prove that the flash structure of the utility model produced by using a new forging die comprises the following components in percentage by weight:
(1) the service life of the forging die is prolonged to 3500 from 500, so that the raw material and heat treatment cost of the die are reduced;
(2) the service life of the trimming die is prolonged from 1000 pieces to 2200 pieces;
(3) the production efficiency is improved by 10 percent.
Claims (4)
1. Novel structure of transmission shaft flange fork forging overlap, including the preceding plane overlap and the back plane overlap of being connected with the dish portion and the side plane overlap of being connected with two fork ear portions outside, preceding vertical overlap and back vertical overlap, preceding plane overlap, back plane overlap and side plane overlap all are on a parallel with the horizontal plane, and preceding vertical overlap upper end is connected with side plane overlap front end, and back vertical overlap upper end is connected with side plane overlap rear end, its characterized in that: the front vertical flange and the rear vertical flange are symmetrically arranged from front to back, and the included angle beta between the plane where the front vertical flange and the rear vertical flange are located and the vertical plane where the center line between the two fork ear parts is located is 50-60 degrees.
2. The novel structure of the flange yoke forging flash of the transmission shaft according to claim 1, characterized in that: the included angle beta is 55 degrees.
3. The novel structure of the flange yoke forging flash of the transmission shaft according to claim 1 or 2, characterized in that: the rear side edge of the front vertical flash is connected with the front side surface of the fork ear part to form an obtuse included angle, and the front side edge of the rear vertical flash is connected with the middle of the rear side surface of the fork ear part to form an obtuse included angle.
4. The novel structure of the flange yoke forging flash of the transmission shaft according to claim 3, characterized in that: the lower end of the rear side edge of the front vertical flash and the lower end of the front side edge of the rear vertical flash are connected with the edge of the disk part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121274515.2U CN215830988U (en) | 2021-06-08 | 2021-06-08 | Novel structure of transmission shaft flange fork forging flash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121274515.2U CN215830988U (en) | 2021-06-08 | 2021-06-08 | Novel structure of transmission shaft flange fork forging flash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215830988U true CN215830988U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121274515.2U Active CN215830988U (en) | 2021-06-08 | 2021-06-08 | Novel structure of transmission shaft flange fork forging flash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215830988U (en) |
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2021
- 2021-06-08 CN CN202121274515.2U patent/CN215830988U/en active Active
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