CN212216946U - Annular forging forming device - Google Patents
Annular forging forming device Download PDFInfo
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- CN212216946U CN212216946U CN202020847844.0U CN202020847844U CN212216946U CN 212216946 U CN212216946 U CN 212216946U CN 202020847844 U CN202020847844 U CN 202020847844U CN 212216946 U CN212216946 U CN 212216946U
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Abstract
The annular forging forming device comprises a first forming die and a second forming die, wherein the first forming die comprises a first lower die and a first upper die movably positioned above the first lower die, the top surface of the first lower die is provided with a first groove, and the bottom surface of the first upper die is provided with a first bump in a protruding manner; the second forming die comprises a second lower die and a second upper die movably located above the second lower die, a second groove is formed in the top surface of the second lower die, a second protruding block is arranged on the bottom surface of the second upper die in a protruding mode, the protruding height of the second protruding block protruding out of the second upper die is smaller than the protruding height of the first protruding block protruding out of the first upper die, and a forging portion is formed in the portion, located outside the second protruding block, of the bottom surface of the second upper die. Thus, the required pressure is less, and the manufacturing difficulty and the cost are lower.
Description
Technical Field
The utility model relates to a hot forging shaping technical field, especially an annular forging forming device.
Background
Referring to fig. 1 to 3, a cylindrical metal block 30 is heated to about 1100 ℃ and then formed into a cake shape by forging, and then placed in a lower hot forging die 10, and an upper hot forging die 20 is downwardly pressed. The top surface of the lower hot forging die 10 is provided with a groove 11, the bottom surface of the upper hot forging die 20 is provided with a protruding block 21 in a protruding mode, and a main forming cavity is formed between the periphery of the protruding block 21 and the groove 11. The hot forging upper die 20 continuously extrudes the metal block 30, so that the middle part of the metal block 30 becomes thin to form an intermediate part 32, and the circumferential part of the metal block 30 is gradually filled into the main forming cavity to form an annular part 31. Then the middle part 32 is punched and peeled off, and only the annular part 31 is reserved, namely the product annular forging. The annular forging is formed with a central opening 33 in the middle and several arcuate grooves 34 at the peripheral edges.
The press die requires a large pressure, and the hot-stamping upper die 20 needs to act on both the middle portion and the peripheral portion of the metal block 30 at the time of the latter stage of the press, and the pressure required to form a product having a predetermined size by actual tests is 1710 tons, that is, 171000MPa, as shown in fig. 8. The required driving force is large, and the manufacturing difficulty and the cost are high.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an annular forging forming device that required pressure is less, the preparation degree of difficulty and cost are all lower to solve above-mentioned problem.
The annular forging forming device comprises a first forming die and a second forming die, wherein the first forming die comprises a first lower die and a first upper die movably positioned above the first lower die, the top surface of the first lower die is provided with a first groove, and the bottom surface of the first upper die is provided with a first bump in a protruding manner; the second forming die comprises a second lower die and a second upper die movably located above the second lower die, a second groove is formed in the top surface of the second lower die, a second protruding block is arranged on the bottom surface of the second upper die in a protruding mode, the protruding height of the second protruding block protruding out of the second upper die is smaller than the protruding height of the first protruding block protruding out of the first upper die, and a forging portion is formed in the portion, located outside the second protruding block, of the bottom surface of the second upper die.
Further, a metal block is placed in the first groove of the first lower die, and a first driving unit drives the first upper die to move downwards, so that the middle of the metal block forms a thin sheet part, and the circumferential direction of the metal block protrudes outwards to form a first annular part.
Further, the bottom of the second groove is provided with a convex ring in a protruding mode corresponding to the circumferential edge of the second bump.
Furthermore, a plurality of third grooves are formed in the circumferential outer side wall of the second upper die in a recessed mode along the axial direction, and circumferential forming convex blocks corresponding to the third grooves are arranged on the inner side wall of the second groove in a protruding mode.
Furthermore, the metal block is placed in a second groove of the second lower die, the thin sheet part is positioned in an area inside the convex ring, and the first annular part is positioned in an area outside the convex ring; a second driving unit drives the second upper die to move downwards, and the forging part acts on the first annular part.
Compared with the prior art, the annular forging forming device comprises a first forming die and a second forming die, wherein the first forming die comprises a first lower die and a first upper die movably positioned above the first lower die, a first groove is formed in the top surface of the first lower die, and a first lug is arranged on the bottom surface of the first upper die in a protruding manner; the second forming die comprises a second lower die and a second upper die movably located above the second lower die, a second groove is formed in the top surface of the second lower die, a second protruding block is arranged on the bottom surface of the second upper die in a protruding mode, the protruding height of the second protruding block protruding out of the second upper die is smaller than the protruding height of the first protruding block protruding out of the first upper die, and a forging portion is formed in the portion, located outside the second protruding block, of the bottom surface of the second upper die. Thus, the required pressure is less, and the manufacturing difficulty and the cost are lower.
Drawings
Embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a side sectional view of a conventional hot forging die in a first state.
Fig. 2 is a side sectional view of a conventional hot forging die in a second state.
FIG. 3 is a perspective view of an annular forging.
Fig. 4 is a side sectional view of the first forming die of the annular forging forming device provided by the present invention.
Fig. 5 is another state diagram of the first molding die.
Fig. 6 is a side sectional view of a second forming die of the annular forging forming device provided by the present invention.
Fig. 7 is the utility model provides an annular forging forming device's local stereogram.
Fig. 8 is a pressure test chart during forming of a conventional hot forging die.
Fig. 9 is a pressure test chart at the time of the first molding die operation.
Fig. 10 is a pressure test chart at the time of the second molding operation.
Detailed Description
The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 4 to 7, the annular forging forming device of the present invention includes a first forming die and a second forming die.
Referring to fig. 4 and 5, the first forming mold includes a first lower mold 110 and a first upper mold 120 movably located above the first lower mold 110, a first groove 111 is formed on a top surface of the first lower mold 110, a first protrusion 121 is protrudingly disposed on a bottom surface of the first upper mold 120, and a step ring 122 is formed on an outer side of the first protrusion 121 of the first upper mold 120.
A metal block 30 heated to about 1100 ℃ is formed into a pie shape by forging and then placed in the first groove 111 of the first lower die 110, a first driving unit drives the first upper die 120 to move downward to press the metal block 30, so that the metal block 30 is pressed and deformed, the middle part is thinned to form the thin plate part 36, and the circumferential direction of the metal block 30 protrudes outward to form the first annular part 35. The resulting first annular portion 35 has a first gap 112 with the step ring 122.
The larger the contact area of the mold with the object, the greater the pressure required. Since the first upper die 120 contacts only the middle portion (i.e., the thin plate portion 36) of the metal block 30, the portion (i.e., the first annular portion 35) of the metal block 30 in the circumferential direction does not contact the step ring 122 of the first upper die 120, so that the pressure applied to the first upper die 120 can be greatly reduced.
The thickness of the thin sheet portion 36 is 5 mm.
When the first molding die is operated, the pressing force of the first upper die 120 acts on the middle portion of the metal block 30 through the first protrusion 121. It was found through testing that the pressing force required to stamp the middle portion of the metal block 30 to a predetermined thickness was 611 tons, i.e., 61100MPa, as shown in fig. 9. The step ring 122 of the first upper die 120 is not in contact with the first annular portion 35.
Referring to fig. 6 and 7, the second molding die includes a second lower die 130 and a second upper die 140 movably disposed above the second lower die 130, a second groove 131 is formed on a top surface of the second lower die 130, and a second protrusion 141 is protrudingly disposed on a bottom surface of the second upper die 140. The height of the second bump 141 protruding from the second upper die 140 is less than the height of the first bump 121 protruding from the first upper die 120, for example, the height of the second bump 141 protruding from the second upper die 140 is 5mm less than the height of the first bump 121 protruding from the first upper die 120. A portion of the bottom surface of the second upper die 140 located outside the second protrusion 141 forms a swaged portion 143.
The bottom of the second groove 131 is protrudingly provided with a protruding ring 132 corresponding to the circumferential edge of the second protrusion 141. The area of the second groove 131 inside the collar 132 is an intermediate zone 134. The distance from the intermediate zone 134 to the top surface of the foil portion 36 is 8-10 mm.
A plurality of third grooves 142 are axially recessed in the circumferential outer side wall of the second upper die 140, and circumferential forming protrusions 133 are protrudingly formed in the inner side wall of the second groove 131 corresponding to the third grooves 142.
The metal slug 30, which has been swaged by the first swaging die, is directly put into the second recess 131 of the second lower die 130, and the thin plate portion 36 is located in the region inside the convex ring 132 and the first annular portion 35 is located in the region outside the convex ring 132.
When a second driving unit drives the second upper die 140 to move downwards, since the height of the second protrusion 141 protruding from the second upper die 140 is less than the height of the first protrusion 121 protruding from the first upper die 120, the swaged portion 143 will act on the first annular portion 35, so that the first annular portion 35 is extruded into a predetermined shape; since the second bump 141 is in contact with the top surface of the sheet portion 36 but the intermediate region 134 is not in contact with the bottom surface of the sheet portion 36, no or very little force acts between the second bump 141 and the sheet portion 36, which is negligible. It has been tested that the pressure required to press the metal block 30 into the predetermined shape by the second upper die 140 is 814 tons, i.e., 81400MPa, as shown in fig. 10.
The convex ring 132 can prevent a large amount of material from flowing back toward the thin plate portion 36 when the first annular portion 35 is deformed by being pressed, and the metal block 30 can form a dent at the convex ring 132, so that the thin plate portion 36 can be conveniently punched and separated later, and the deformation amount of the first annular portion 35 during punching can be reduced.
The utility model discloses an annular forging forming device's working process, including following step:
step S1: the metal block 30 heated to 1100 c is pressed into a cake shape.
Step S2: providing a first molding die, wherein the first molding die comprises a first lower die 110 and a first upper die 120 movably located above the first lower die 110, a first groove 111 is formed on the top surface of the first lower die 110, and a first bump 121 is protrudingly arranged on the bottom surface of the first upper die 120.
Step S3: the pie-shaped metal block 30 is put into the first groove 111 of the first lower mold 110.
Step S4: a first driving unit drives the first upper die 120 to move downward and press the metal block 30, so that the metal block 30 is pressed and deformed, the middle portion of the metal block 30 becomes thin, a thin plate portion 36 is formed, and the circumferential direction of the metal block 30 protrudes outward to form a first annular portion 35.
Step S5: providing a second molding die, wherein the second molding die comprises a second lower die 130 and a second upper die 140 movably positioned above the second lower die 130, a second groove 131 is formed in the top surface of the second lower die 130, and a second bump 141 is protrudingly arranged on the bottom surface of the second upper die 140; the height of the second bump 141 protruding from the second upper die 140 is less than the height of the first bump 121 protruding from the first upper die 120; a swaged part 143 is formed at a portion of the bottom surface of the second upper die 140 outside the second protrusion 141; the bottom of the second groove 131 is protrudingly provided with a protruding ring 132 corresponding to the circumferential edge of the second protrusion 141.
Step S6: the metal block 30 which is forged by the first forming die is placed in the second recess 131 of the second lower die 130, the thin portion 36 of the metal block 30 is located in the region inside the convex ring 132, and the first annular portion 35 is located in the region outside the convex ring 132.
Step S7: a second driving unit drives the second upper die 140 to move downward, and the swaged portion 143 acts on the first annular portion 35 so that the first annular portion 35 is swaged into a predetermined shape.
Compared with the prior art, the annular forging forming device of the utility model comprises a first forming die and a second forming die, wherein the first forming die comprises a first lower die 110 and a first upper die 120 movably positioned above the first lower die 110, a first groove 111 is formed on the top surface of the first lower die 110, and a first bump 121 is protrudingly arranged on the bottom surface of the first upper die 120; the second forming mold comprises a second lower mold 130 and a second upper mold 140 movably located above the second lower mold 130, a second groove 131 is formed in the top surface of the second lower mold 130, a second protrusion 141 is protrudingly disposed on the bottom surface of the second upper mold 140, the height of the second protrusion 141 protruding from the second upper mold 140 is smaller than the height of the first protrusion 121 protruding from the first upper mold 120, and a forging portion 143 is formed at the portion of the bottom surface of the second upper mold 140 located outside the second protrusion 141. Thus, the required pressure is less, and the manufacturing difficulty and the cost are lower.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (5)
1. An annular forging forming device which characterized in that: the forming die comprises a first forming die and a second forming die, wherein the first forming die comprises a first lower die and a first upper die movably positioned above the first lower die, a first groove is formed in the top surface of the first lower die, and a first bump is arranged on the bottom surface of the first upper die in a protruding mode; the second forming die comprises a second lower die and a second upper die movably located above the second lower die, a second groove is formed in the top surface of the second lower die, a second protruding block is arranged on the bottom surface of the second upper die in a protruding mode, the protruding height of the second protruding block protruding out of the second upper die is smaller than the protruding height of the first protruding block protruding out of the first upper die, and a forging portion is formed in the portion, located outside the second protruding block, of the bottom surface of the second upper die.
2. The annular forging forming device of claim 1, wherein: a metal block is placed in a first groove of the first lower die, and a first driving unit drives the first upper die to move downwards, so that the middle of the metal block forms a thin plate part, and the circumferential direction of the metal block protrudes outwards to form a first annular part.
3. The annular forging forming device of claim 1, wherein: and the bottom of the second groove is provided with a convex ring in a protruding way corresponding to the circumferential edge of the second bump.
4. The annular forging forming device of claim 1, wherein: a plurality of third grooves are formed in the circumferential outer side wall of the second upper die in a recessed mode along the axial direction, and circumferential forming convex blocks corresponding to the third grooves are arranged on the inner side wall of the second groove in a protruding mode.
5. The annular forging forming device of claim 2, wherein: the metal block is placed in a second groove of the second lower die, the sheet part is positioned in an area inside the convex ring, and the first annular part is positioned in an area outside the convex ring; a second driving unit drives the second upper die to move downwards, and the forging part acts on the first annular part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020847844.0U CN212216946U (en) | 2020-05-19 | 2020-05-19 | Annular forging forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020847844.0U CN212216946U (en) | 2020-05-19 | 2020-05-19 | Annular forging forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212216946U true CN212216946U (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020847844.0U Active CN212216946U (en) | 2020-05-19 | 2020-05-19 | Annular forging forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212216946U (en) |
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2020
- 2020-05-19 CN CN202020847844.0U patent/CN212216946U/en active Active
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