CN213671651U - Arc upsetting anvil for steering knuckle - Google Patents
Arc upsetting anvil for steering knuckle Download PDFInfo
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- CN213671651U CN213671651U CN202022196807.0U CN202022196807U CN213671651U CN 213671651 U CN213671651 U CN 213671651U CN 202022196807 U CN202022196807 U CN 202022196807U CN 213671651 U CN213671651 U CN 213671651U
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- arc
- anvil
- hammering block
- pitch
- knuckle
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Abstract
The utility model relates to a knuckle forging device technical field especially relates to a knuckle arc upset anvil, including last anvil, lower anvil, the middle part of going up the anvil is provided with the arc anvil surface of upwards caving in, arc anvil surface is a surface of revolution, the rotation axis of surface of revolution is located vertical direction, the generating line of surface of revolution is including first pitch arc, the second pitch arc that forms the spherical crown, the spherical crown is located the top, arc anvil surface is circular along the cross-section of horizontal plane, and supreme dwindling gradually is down followed to the diameter of this circular cross-section, lower anvil be provided with the arc anvil surface of last anvil symmetry, the utility model discloses an upper portion is the arc anvil surface of spherical crown for the tip of bar forms the corolla during the upset, and the closed angle at tip edge is dulled down slick and sly, does benefit to the blank shaping in extrusion die cavity, eliminates and produces folding inducement.
Description
Technical Field
The utility model relates to a knuckle forging device technical field especially relates to a knuckle arc jumping-up hammering block platform.
Background
When the knuckle is processed, the bar stock is upset, and then the bar stock is subjected to subsequent processing such as extrusion, pre-forging, finish forging and the like. In the prior art, upsetting can be divided into: upsetting the whole flat anvil, upsetting and extruding the flat anvil and upsetting the local anvil. When the anvil surface is a plane, for example, the flat anvil is upset integrally, the deformation of the end surface of the bar stock is limited by the planar anvil surface, so that the end surface of the bar stock after upsetting is still a plane, and the side surface of the bar stock swells, so that an acute-angle-shaped sharp corner is formed at the edge of the end surface, and the sharp corner is easy to fold in an extrusion cavity in a subsequent extrusion process to influence the quality of a forged piece. And, if the axis of terminal surface and bar is out of plumb when the bar unloading, if slope 1 ~ 3, it is askew to upset easily during the upset, influences follow-up processing and causes the product to scrap even.
Disclosure of Invention
An object of the utility model is to prior art not enough, and provide a knuckle arc upset anvil, it is the arc anvil surface of spherical crown shape through upper portion for the tip of bar forms the crown shape during the upset, and the closed angle at tip edge is by the rounding off, does benefit to the blank shaping in extrusion die cavity, eliminates to produce folding incentive.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a knuckle arc upset anvil, includes anvil, lower anvil, the middle part of going up the anvil is provided with the arc anvil surface of upwards sunken, arc anvil surface is a surface of rotation, the rotation axis of surface of rotation is located vertical direction, the generating line of surface of rotation is including the first pitch arc that forms the spherical crown, form the second pitch arc that annular protrusion is down, the spherical crown is located the top, arc anvil surface is circular along the cross-section of horizontal plane, and supreme diminishing gradually is followed to the diameter of this circular cross-section, through tangent circular arc or straight line transitional coupling between first pitch arc and the second pitch arc, the maximum depth of arc anvil surface is less than or equal to 50mm, down the anvil be provided with the arc surface of last anvil symmetry.
Preferably, the diameter of the spherical crown is 300-350 mm, the diameter of the bottom surface of the spherical crown is larger than or equal to that of a bar to be upset, and the projection length of the second arc line on the horizontal plane is 45-55 mm.
Preferably, the diameter of the bottom surface of the spherical cap is 140 mm.
Preferably, the second arc line is a circular arc with a radius of 50 mm.
Preferably, a transition circular arc and a transition straight line are arranged between the first arc line and the second arc line, the upper end of the transition circular arc is internally tangent to the lower end of the first arc line, and two ends of the transition straight line are externally tangent to the lower end of the transition circular arc and the upper end of the second arc line respectively.
Preferably, the radius of the transition circular arc is 30 mm.
The utility model has the advantages that: the utility model provides a knuckle arc upset anvil, includes anvil, lower anvil, the middle part of going up the anvil is provided with the arc anvil face of upwards sunken, arc anvil face is a surface of revolution, the rotation axis of surface of revolution is located vertical direction, the generating line of surface of revolution includes the first pitch arc that forms the spherical crown, forms the second pitch arc that downward ring form is outstanding, the spherical crown is located the top, arc anvil face is circular along the cross-section of horizontal plane, and the diameter of this circular cross-section is followed supreme diminishing down gradually, through tangent circular arc or straight line transitional coupling between first pitch arc and the second pitch arc, the maximum depth of arc anvil face is less than or equal to 50mm, lower anvil be provided with the arc face of last anvil symmetry, the utility model discloses an upper portion is the arc anvil face of spherical crown shape for the tip of bar forms the crown shape during the upset, and the closed angle of tip edge is dulled slick and sly, the blank is formed in the extrusion cavity, and the incentive for folding is eliminated.
Drawings
Figure 1 is a schematic view of the knuckle arc upsetting anvil of the present invention.
Fig. 2 is a schematic diagram of the first arc line, the second arc line, the transition arc and the transition straight line of the rotating surface of the present invention.
Description of reference numerals:
1-lower anvil 2-upper anvil
3-arc anvil surface 4-first arc line
5-second arc line 6-transition arc
7-straight transition line.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and the embodiments, and is not intended to limit the scope of the invention.
As shown in fig. 1 to 2, the arc-upsetting anvil for a knuckle of this embodiment uses a 42CrMo alloy steel processing bar stock for upsetting and then processing into the knuckle. This hammering block includes hammering block 1, lower hammering block 2, the middle part of going up hammering block 1 is provided with the arc hammering block face 3 of upwards sunken, arc hammering block face 3 is a surface of rotation, the rotation axis of surface of rotation is located vertical direction, the generating line of surface of rotation is including the first pitch arc 4 that forms the spherical crown, form the second pitch arc 5 that annular is outstanding downwards, the spherical crown is located the top, arc hammering block face 3 is circular along the cross-section of horizontal plane, and supreme dwindling gradually is down followed to the diameter of this circular cross-section, through tangent circular arc or straight line transitional coupling between first pitch arc 4 and the second pitch arc 5, the maximum depth less than or equal to 50mm of arc hammering block face 3, down hammering block 2 be provided with the arc hammering block face 3 of last hammering block 1 symmetry.
Further, the diameter of spherical cap is relevant with the diameter of bar to receive the restriction of the degree of depth of arc hammering block face 3, the utility model discloses in the diameter of spherical cap is 300 ~ 350mm, and its bottom surface diameter more than or equal to treats the diameter of the bar of upsetting, second pitch arc 5 is 45 ~ 55mm at the projection length of horizontal plane, just so makes the tip of bar completely in the within range of spherical cap before the upsetting, when carrying out the upsetting, upwards warp in the middle of the tip of bar and forms protruding, the downward deformation in edge forms the fillet.
Further, the diameter of the bottom surface of the spherical crown is 140mm, and the diameter of the bar to be upset is less than or equal to 140 mm.
Further, the second arc line 5 is a circular arc with a radius of 50 mm.
Further, a transition arc 6 and a transition straight line 7 are arranged between the first arc line 4 and the second arc line 5, the upper end of the transition arc 6 is internally tangent to the lower end of the first arc line 4, and two ends of the transition straight line 7 are externally tangent to the lower end of the transition arc 6 and the upper end of the second arc line 5 respectively.
Further, the radius of the transition circular arc 6 is 30 mm. In FIG. 2, O4、O5、O6Are the centers of a first arc 4, a second arc 5 and a transition arc 6 respectively.
The utility model can automatically centralize the bar by using the arc anvil surface 3 under the condition that the end surface of the bar inclines by 1-3 degrees, thereby avoiding the askew upsetting; compared with a large flat surface of flat upsetting, the end part of the upset workpiece protrudes, and in the subsequent extrusion and pre-forging processes, a forge piece is easier to put into a cavity, especially for the cavity with a complex end part, the metal flow of the position is smaller during extrusion or pre-forging, so that the cavity is easier to fill; the smaller the deformation of the opposite edges in the centre of the end and the guiding and righting action of the curved anvil surface 3 on the bar, the greater the length to diameter ratio of the bar, beyond the conventional requirement that the length to diameter ratio should be less than 2.5.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. A knuckle arc upsetting anvil, characterized by: including last hammering block (1), lower hammering block (2), the middle part of going up hammering block (1) is provided with arc hammering block face (3) of upwards sunken, arc hammering block face (3) are a surface of rotation, the rotation axis of surface of rotation is located vertical direction, the generating line of surface of rotation is including first pitch arc (4) that forms the spherical crown, forms downward annular outstanding second pitch arc (5), the spherical crown is located the top, arc hammering block face (3) are circular along the cross-section of horizontal plane, and supreme dwindling gradually is followed to the diameter of this circular cross-section, through tangent circular arc or straight line transitional coupling between first pitch arc (4) and second pitch arc (5), the maximum depth less than or equal to 50mm of arc hammering block face (3), hammering block (2) down be provided with arc hammering block face (3) of last hammering block (1) symmetry.
2. The knuckle arc upsetting anvil according to claim 1, wherein: the diameter of the spherical crown is 300-350 mm, the diameter of the bottom surface of the spherical crown is larger than or equal to that of a bar to be upset, and the projection length of the second arc line (5) on the horizontal plane is 45-55 mm.
3. The knuckle arc upsetting anvil according to claim 2, wherein: the diameter of the bottom surface of the spherical cap is 140 mm.
4. The knuckle arc upsetting anvil according to claim 3, wherein: the second arc line (5) is an arc with the radius of 50 mm.
5. The knuckle arc upsetting anvil according to claim 4, wherein: be provided with transition circular arc (6), transition straight line (7) between first pitch arc (4) and second pitch arc (5), the upper end of transition circular arc (6) with the lower extreme inscribe of first pitch arc (4), the both ends of transition straight line (7) respectively with the lower extreme of transition circular arc (6) the upper end of second pitch arc (5) is circumscribed.
6. The knuckle arc upsetting anvil according to claim 5, wherein: the radius of the transition circular arc (6) is 30 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022196807.0U CN213671651U (en) | 2020-09-29 | 2020-09-29 | Arc upsetting anvil for steering knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022196807.0U CN213671651U (en) | 2020-09-29 | 2020-09-29 | Arc upsetting anvil for steering knuckle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213671651U true CN213671651U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022196807.0U Active CN213671651U (en) | 2020-09-29 | 2020-09-29 | Arc upsetting anvil for steering knuckle |
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| CN (1) | CN213671651U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680939A (en) * | 2021-08-28 | 2021-11-23 | 湖北三环锻造有限公司 | T-arm sinking type upsetting die |
| CN117245048A (en) * | 2023-11-20 | 2023-12-19 | 陕西长羽航空装备股份有限公司 | Pre-forging forming device and forming method for dial bracket of aviation aircraft |
-
2020
- 2020-09-29 CN CN202022196807.0U patent/CN213671651U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680939A (en) * | 2021-08-28 | 2021-11-23 | 湖北三环锻造有限公司 | T-arm sinking type upsetting die |
| CN113680939B (en) * | 2021-08-28 | 2023-09-01 | 湖北三环锻造有限公司 | T-arm sinking upsetting die |
| CN117245048A (en) * | 2023-11-20 | 2023-12-19 | 陕西长羽航空装备股份有限公司 | Pre-forging forming device and forming method for dial bracket of aviation aircraft |
| CN117245048B (en) * | 2023-11-20 | 2024-01-30 | 陕西长羽航空装备股份有限公司 | Pre-forging forming device and forming method for dial bracket of aviation aircraft |
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