CN217831749U - Novel forging mould of spline shaft fork forging - Google Patents
Novel forging mould of spline shaft fork forging Download PDFInfo
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- CN217831749U CN217831749U CN202221591179.9U CN202221591179U CN217831749U CN 217831749 U CN217831749 U CN 217831749U CN 202221591179 U CN202221591179 U CN 202221591179U CN 217831749 U CN217831749 U CN 217831749U
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Abstract
The utility model provides a novel forging mould of spline shaft fork forging, includes forging die and forging die down, goes up the forging die bottom surface and forms the finish forging die cavity with the corresponding encirclement of forging die top surface down, goes up and forms the parting face between forging die bottom surface and the forging die top surface down, and the finish forging die cavity includes left pole portion chamber and the fork portion chamber on right side, and the left side portion of fork portion chamber front side wall and back side wall is the curved surface structure, and the circular arc passes through between curved surface structure and the pole portion chamber right-hand member. The utility model discloses reduced mould processing and the fashioned degree of difficulty of forging among the forging forming process, the thickness dimension of the stair structure department at former forging reduces, should locate more easily to be full of in forging process, when the position when the final forging die cavity is put into to the preforging piece has certain skew, can not cause the forging to fold and scrape the material, improves the yield of forging, and the final forging die utensil life extension effectively reduces the mould cost simultaneously, improves production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the automotive industry, concretely relates to novel forging mould of spline shaft fork forging.
Background
The structural design of a traditional spline shaft fork forging is shown in figure 1, and the traditional spline shaft fork forging comprises a rod part 1 and a fork part 2, wherein the outer side part of the joint of the rod part 1 and the fork part 2 is shown as I in figure 1, the structure is provided with two steps, and the difference between the adjacent steps is large.
The finish forging die of the traditional spline shaft fork forging piece is shown in figures 2 and 3 and comprises an upper forging die 3 and a lower forging die 4, a finish forging cavity 5 is defined between the bottom surface of the upper forging die 3 and the top surface of the lower forging die 4, and the part I shown in figure 1 corresponds to the step groove structures of the part A in figure 2 and the part B in figure 3. The finish forging die has the following technical problems: the spline shaft fork forging is complex in structural design, the processing complexity of a terminal die and the forming difficulty of the forging are increased, the part shown as I in figure 1 is not easy to fill in the thickness direction of a fork lug of a fork part 2 in the forging forming process, and when the position of a pre-forged part placed in a finish forging cavity 5 is inconsistent, folding and scraping are generated at the joint of a step of the pre-forged part and a step groove in the finish forging cavity 5, so that the forging is scrapped; meanwhile, the inner wall of the step groove of the finish forging cavity 5 is easy to wear, so that the finish forging die fails in advance, and the production cost is increased. In addition, after the finish forging is finished, the upper forging die 3 moves upwards, the spline shaft fork forging piece is left inside the lower forging die 4, the fork lug of the fork part 2 of the spline shaft fork forging piece is usually clamped by a clamp when the forging piece is taken out, and the clamp is easy to slip and not easy to demould because only the upper half part of the fork lug is exposed outside.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a novel forging mould of spline shaft fork forging that the forging is changed and is full of shaping, difficult wearing and tearing, make things convenient for the drawing of patterns.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a novel forging mould of spline shaft fork forging, includes forging die and lower forging die, goes up the forging die bottom surface and forms the finish forging die cavity with lower forging die top surface corresponding surrounds, goes up and forms the parting face between forging die bottom surface and the lower forging die top surface, and the finish forging die cavity includes left pole portion chamber and the fork portion chamber on right side, and the left side portion of fork portion chamber front side wall and back side wall is the curved surface structure, circular arc transition between curved surface structure and the pole portion chamber right-hand member.
The inside vertical guide hole that link up from top to bottom of forging die down, vertical guide hole upper end and pole portion chamber bottom intermediate position intercommunication, vertical guide hole lower port are equipped with spacing step groove, and spacing step groove diameter is greater than vertical guide hole internal diameter, is equipped with the ejector pin in the vertical guide hole, and the ejector pin lower extreme is equipped with spacing post in spacing step inslot, and spacing post lower extreme is connected with the cylinder that is used for driving the ejector pin and reciprocates.
The left side and the right side of the upper forging die are provided with an upper lifting hole and an upper pressing groove which is formed along the front-back direction, and the left side and the right side of the lower forging die are provided with a lower lifting hole and a lower pressing groove which is formed along the front-back direction.
The upper forging die and the lower forging die are both cuboid in shape, four corners of the lower surface of the upper forging die are respectively provided with a guide positioning block, and four corners of the upper surface of the lower forging die are respectively provided with a guide positioning concave step corresponding to the guide positioning block.
Adopt above-mentioned technical scheme, the utility model discloses following technological effect has:
(1) Because the left part of lateral wall and back lateral wall is the curved surface structure before the fork portion chamber, circular arc transition between curved surface structure and the pole portion chamber right-hand member is passing through like this the utility model discloses the fork portion lateral surface of spline shaft fork forging after forging is curved surface structure from the fork ear to the part between the pole portion, no longer has step structure, the linking of fork portion and pole portion is more slick and sly, the mould processing and the fashioned degree of difficulty of forging in the forging forming process have been reduced, thickness size at the step structure department of former forging reduces, this department is full of more easily in the forging process, when the position when the final forging die cavity is put into to the preforging piece has certain skew, can not cause the forging folding and scrape the material, improve the yield of forging.
(2) Compared with the inner wall structure of the step groove, the inner wall structure of the finish forging die cavity at the curved surface structure is more balanced in stress, edges and corners do not exist, the service life of the finish forging die is prolonged, the die cost is effectively reduced, and the production efficiency is improved.
(3) The ejector rod is arranged inside the lower forging die, when the forging piece is demoulded, the starting cylinder drives the ejector rod to move upwards, the ejector rod jacks up the rod part of the forging piece, and a worker clamps the rod part by using the clamp so as to enable the forging piece to be demoulded more easily. The distance that the limiting column moves upwards in the limiting step groove is the length that the ejector rod extends upwards to the finish forging cavity.
(4) When an upper forging die and a lower forging die are hoisted on a press machine, a suspender is inserted into the jack holes at the left side and the right side of the forging die, L-shaped pressing plates are respectively arranged in an upper pressing groove and a lower pressing groove, and then the T-shaped bolts are connected with corresponding die base plates of the press machine in a press-fitting manner.
The left and right sides of the upper forging die are respectively provided with an upper threaded hole, and the left and right sides of the lower forging die are respectively provided with a lower threaded hole, so that the upper forging die and the lower forging die can be conveniently installed and fixed.
(5) The upper forging die and the lower forging die are correspondingly matched with the guide positioning concave steps through four groups of guide positioning blocks, so that the upper forging die and the lower forging die can be conveniently and accurately matched in downward forging, and the upper half part and the lower half part of the finish forging cavity are ensured not to be dislocated.
Drawings
FIG. 1 is a schematic structural view of a prior art spline shaft fork forging;
FIG. 2 is a schematic structural diagram of a prior art spline shaft yoke forging die;
FIG. 3 is a top view of the lower die of FIG. 2;
fig. 4 is a schematic structural diagram of the present invention;
FIG. 5 is a top view of the lower die of FIG. 4;
fig. 6 is a schematic structural view of the final forging rear spline shaft fork forging of the present invention.
Detailed Description
As shown in fig. 4, fig. 5 and fig. 6, the utility model discloses a novel forging mould of spline shaft fork forging, including last forging die 3 and lower forging die 4, go up 3 bottom surfaces of forging die and 4 top surfaces of lower forging die and correspond to surround and form finish forging die cavity 5, go up and form die parting face 6 between 3 bottom surfaces of forging die and the 4 top surfaces of lower forging die, finish forging die cavity 5 includes left pole portion chamber and the fork portion chamber on right side, and the left side portion of lateral wall and back lateral wall is curved surface structure 7 before the fork portion chamber, and circular arc transition 8 between curved surface structure 7 and the pole portion chamber right-hand member.
The lower forging die 4 is internally provided with a vertical guide hole 9 which is vertically communicated, the upper end of the vertical guide hole 9 is communicated with the middle position of the bottom of the rod cavity, a limiting step groove 10 is arranged at the lower port of the vertical guide hole 9, the diameter of the limiting step groove 10 is larger than the inner diameter of the vertical guide hole 9, a mandril 11 is arranged in the vertical guide hole 9, a limiting column 12 is arranged at the lower end of the mandril 11 in the limiting step groove 10, and the lower end of the limiting column 12 is connected with a cylinder (not shown) which is used for driving the mandril 11 to move up and down.
The left side and the right side of the upper forging die 3 are provided with an upper lifting hole 13 and an upper pressing groove 17 which is arranged along the front-back direction, and the left side and the right side of the lower forging die are provided with a lower lifting hole 14 and a lower pressing groove 18 which is arranged along the front-back direction.
The upper forging die 3 and the lower forging die 4 are both cuboid in shape as a whole, four corners of the lower surface of the upper forging die 3 are respectively provided with a guide positioning block 15, and four corners of the upper surface of the lower forging die 4 are respectively provided with a guide positioning concave step 16 corresponding to the guide positioning block 15.
The utility model discloses following technological effect has:
(1) Because the left part of lateral wall and back lateral wall is curved surface structure 7 before the forked portion chamber, circular arc transition 8 between curved surface structure 7 and the pole portion chamber right-hand member, like this through the utility model discloses 2 lateral surfaces of forked portion of spline shaft fork forging after forging are curved surface structure from the fork ear to the part between 1 of pole portion, no longer have the stair structure, forked portion 2 is more slick and sly with linking up of pole portion 1, the mould processing and the fashioned degree of difficulty of forging among the forging forming process have been reduced, the thickness size of the stair structure department at former forging reduces, should be full of in the forging in-process more easily, when there is certain skew in the position when finish forging die cavity 5 is put into to the preforging, can not cause the forging folding and scrape the material, improve the yield of forging.
(2) Compared with the inner wall structure of the step groove, the inner wall of the finish forging cavity 5 at the curved surface structure 7 is more balanced in stress, edges and corners do not exist, the service life is prolonged, the cost of the die is effectively reduced, and the production efficiency is improved.
(3) At inside ejector pin 11 that sets up of forging die 4 down, when the forging drawing of patterns, start cylinder drive ejector pin 11 upwards removes, ejector pin 11 jacks up the pole portion 1 of forging, and the staff uses clamp centre gripping pole portion 1 to make the forging drawing of patterns more easily. The distance that the limiting column 12 moves upwards in the limiting step groove 10 is the length that the ejector rod 11 extends upwards to the finish forging cavity 5.
(4) When the upper forging die 3 and the lower forging die 4 are hoisted on the press machine, the suspender is inserted into the jack holes at the left side and the right side of the forging die, the L-shaped pressing plates are respectively arranged in the upper pressing groove 17 and the lower pressing groove 18, and then the T-shaped bolts are connected with the corresponding die base plates of the press machine in a press-fitting manner, so that the connection mode has high reliability and is convenient to disassemble and assemble.
(5) The upper forging die 3 and the lower forging die 4 are correspondingly matched with the guide positioning concave step 16 through four groups of guide positioning blocks 15, so that the upper forging die 3 and the lower forging die 4 can be conveniently and accurately matched when the upper forging die 3 is forged downwards, and the upper half part and the lower half part of the finish forging cavity 5 are not dislocated.
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 (4)
1. The utility model provides a novel forging mould of spline shaft fork forging, includes forging die and forging die down, goes up the forging die bottom surface and corresponds to enclose with forging die top surface down and form the finish forging die cavity, goes up and forms the die parting face between forging die bottom surface and the forging die top surface down, and the finish forging die cavity includes left pole portion chamber and the fork portion chamber on right side, its characterized in that: the left side parts of the front side wall and the rear side wall of the fork cavity are curved surface structures, and the curved surface structures and the right end of the rod cavity are in circular arc transition.
2. The novel forging die of spline shaft fork forging of claim 1, characterized in that: the inside vertical guide hole that link up from top to bottom of forging die down, vertical guide hole upper end and pole portion chamber bottom intermediate position intercommunication, vertical guide hole lower port are equipped with spacing step groove, and spacing step groove diameter is greater than vertical guide hole internal diameter, are equipped with the ejector pin in the vertical guide hole, and the ejector pin lower extreme is equipped with spacing post in spacing step inslot, and spacing post lower extreme is connected with and is used for driving the cylinder that the ejector pin reciprocated.
3. The novel forging die for the spline shaft fork forging piece as claimed in claim 1 or 2, wherein: the left side and the right side of the upper forging die are provided with an upper lifting hole and an upper pressing groove formed in the front-back direction, and the left side and the right side of the lower forging die are provided with a lower lifting hole and a lower pressing groove formed in the front-back direction.
4. The novel forging die for the spline shaft fork forging piece as claimed in claim 1 or 2, wherein: the upper forging die and the lower forging die are both cuboid in shape as a whole, four corners of the lower surface of the upper forging die are respectively provided with a guide positioning block, and four corners of the upper surface of the lower forging die are respectively provided with a guide positioning concave step corresponding to the guide positioning block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221591179.9U CN217831749U (en) | 2022-06-24 | 2022-06-24 | Novel forging mould of spline shaft fork forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221591179.9U CN217831749U (en) | 2022-06-24 | 2022-06-24 | Novel forging mould of spline shaft fork forging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217831749U true CN217831749U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221591179.9U Active CN217831749U (en) | 2022-06-24 | 2022-06-24 | Novel forging mould of spline shaft fork forging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217831749U (en) |
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2022
- 2022-06-24 CN CN202221591179.9U patent/CN217831749U/en active Active
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