CN211304453U - Device for eliminating stress of stamping part - Google Patents
Device for eliminating stress of stamping part Download PDFInfo
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- CN211304453U CN211304453U CN201921852585.4U CN201921852585U CN211304453U CN 211304453 U CN211304453 U CN 211304453U CN 201921852585 U CN201921852585 U CN 201921852585U CN 211304453 U CN211304453 U CN 211304453U
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- forming part
- lower die
- upper die
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- 230000008093 supporting effect Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 abstract description 8
- 238000007493 shaping process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 9
- 238000007373 indentation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 241001133184 Colletotrichum agaves Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the field of part processing, in particular to a device for stress relief of stamping parts, which comprises an upper die and a lower die which are matched with each other, wherein the upper die comprises an upper die forming part, the lower die comprises a lower die forming part corresponding to the upper die forming part, a die cavity for placing a pressure plate is formed between the upper die forming part and the lower die forming part, the lower die also comprises an annular disc arranged outside the lower die forming part, a plurality of bulges are uniformly distributed on the annular disc towards one side surface of the upper die forming part so as to form a grid shape on the surface of the annular disc, and the upper surfaces of the bulges; the lower die forming part is connected to the lower die in a sliding mode, an ejector rod used for ejecting a pressure plate clamped on the protrusion is fixed below the lower die forming part on the lower die, and a through hole for the ejector rod to pass through is formed in the lower die forming part. By adopting the scheme of the invention, the problem that the flange surface of the pressure plate has lower flatness due to stress in the extrusion shaping process of the pressure plate can be solved.
Description
Technical Field
The invention relates to the field of part processing, in particular to a device for eliminating stress of a stamping part.
Background
The pressure plate is an important structure on the automobile clutch, plays an important role in automobile driving safety, is in a normal state, is tightly attached to a clutch plate, is called as a whole, rotates along with an engine, and transmits power to a gearbox. With reference to fig. 1, the platen includes the arc portion of buckling and the flange face that is located the arc portion of buckling the outside, and the processing of platen among the prior art includes four processes of blanking, shaping, turn-ups and plastic, and wherein shaping and turn-ups process mean that carry out preliminary shape processing to the platen, and the plastic process means that improve the plane degree of the flange face that processes out.
Shaping mould among the prior art can generally be utilized to the plastic process, and shaping mould includes mould and lower mould, goes up to be equipped with the die cavity that supplies the platen to place on mould and the lower mould, and through the compound die back, go up the pressure resultant force between mould and the lower mould and make the platen produce certain deformation and then form the shape identical with the die cavity completely, improves the shape precision of platen. In the process, the flange surface is in a horizontal state under the action of the pressing force between the upper die and the lower die, but after extrusion is completed, the flange surface is released by the internal stress generated by extrusion, and rebounds to a certain degree, so that the flatness of the flange surface is not ideal.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a device for eliminating stress of a stamping part, which aims to solve the problem that the flange surface of a pressure plate is low in flatness due to internal stress in the extrusion and shaping process of the pressure plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for eliminating stress of a stamping part comprises an upper die and a lower die which are matched with each other, wherein the upper die comprises an upper die forming part, the lower die comprises a lower die forming part corresponding to the upper die forming part, a die cavity for placing a pressure plate is formed between the upper die forming part and the lower die forming part, the lower die further comprises an annular disc arranged on the outer side of the lower die forming part, a plurality of bulges are uniformly distributed on the surface of one side, facing the upper die forming part, of the annular disc so that the surface of the annular disc forms a grid shape, and the upper surfaces of the; the lower die forming part is connected to the lower die in a sliding mode, an ejector rod used for ejecting a pressure plate clamped on the protrusion is fixed below the lower die forming part on the lower die, and a through hole for the ejector rod to pass through is formed in the lower die forming part.
Compared with the prior art, the invention has the following beneficial effects:
1. through setting up the arch, the flange face of pressure disk is when receiving the extrusion, and the arch produces ascending holding power to the flange face, and protruding dispersion absorbs the downward pressure of mould, reduces the internal stress of flange face. The protrusion is arranged in an annular grid shape, the upper surface of the protrusion is horizontal or arc-shaped, the contact area between the protrusion and the pressure plate is increased, the lower end of the flange surface is stressed uniformly as far as possible, and then microcracks which are possibly generated on the workpiece when the protrusion extrudes the workpiece are reduced, and the quality of the workpiece is improved.
2. Only set up protrudingly on the lower mould, the arch receives the extrusion can produce the indentation even sunken on the flange face, can form the indentation even sunken on flange face lower surface in this scheme promptly, follow-up indentation or sunken that still need remove the lower surface of flange face through the machine tooling car. Therefore, only the lower die is provided with the bulge, and the subsequent processing procedures are reduced.
3. And the ejector rod is arranged, so that the lower die forming part slides upwards relative to the ejector rod during processing, the ejector rod is not inserted into the through hole any more, and the die can be closed. After the processing is finished, the lower die forming part is downwards slid, so that the ejector rod is inserted into the through hole and the pressure plate is upwards ejected. In the process of processing the pressure disk, the pressure disk can be forced the card and on the arch, is difficult to take off, consequently sets up the ejector pin and conveniently takes out the pressure disk.
Furthermore, the upper die also comprises an upper die base positioned above the upper die forming part, and an elastic part is fixed between the upper die base and the upper die forming part.
Has the advantages that: after the die is closed, the upper die forming part can be continuously driven to slide downwards, the extrusion force of the upper die forming part on the pressure plate is increased, and a better extrusion effect is obtained.
Furthermore, a first telescopic column is fixed between the upper die forming part and the upper die base.
Has the advantages that: first flexible post is spacing to the vertical slip of last mould formed part, avoids last mould formed part to take place the skew when vertical slip.
Further, the lower die further comprises a lower die base located below the lower die forming part, and a second telescopic column is fixed between the lower die base and the upper die base.
Has the advantages that: the second telescopic column limits the vertical sliding of the upper die, and the accuracy of the upper die in die assembly is guaranteed.
Furthermore, a positioning column is fixed in the middle of the lower end of the upper die forming part, a positioning hole is fixed in the middle of the upper end of the lower die forming part, and the positioning column can be inserted into the positioning hole during die assembly.
Has the advantages that: the positioning holes and the positioning columns further position the upper die forming part and the lower die forming part, and accuracy in die assembly is guaranteed.
Furthermore, the circumference that the upper die base lower extreme is located the last mould formed part is fixed with upper limit post, and the circumference that the lower die base upper end is located the lower mould formed part is fixed with lower limit post, and upper limit post offsets with lower limit post terminal surface.
Has the advantages that: through the setting of last spacing post and lower spacing post, will go up mould formed part and lower mould formed part restriction in certain extent, have the effect of location.
Further, the protrusion has elasticity.
Has the advantages that: the bulge has deformability, can provide better deformation buffering effect for the pressure plate when being extruded, reduces the indentation left on the surface of the pressure plate by the bulge, and is convenient for subsequent processing.
Drawings
FIG. 1 is a front sectional view of a platen according to the present invention.
Fig. 2 is a schematic overall structure diagram of the embodiment of the present invention.
Fig. 3 is a schematic structural view of the upper die.
Fig. 4 is a schematic structural view of the lower die.
Fig. 5 is an enlarged view of a portion a in fig. 4.
Fig. 6 is a front cross-sectional view of an embodiment of the present invention.
In the figure: the device comprises a pressure plate 1, a flange face 2, an upper die base 3, a lower supporting plate 4, a lower die base 5, a supporting plate 6, a lower limiting column 7, an upper padding plate 8, an upper clamping plate 9, an upper die plate 10, an upper die forming part 11, an upper die outer plate 12, a positioning column 13, a second telescopic column 15, a lower clamping plate 16, a lower padding plate 17, a lower die plate 18, a lower die outer plate 19, an annular plate 20, a lower die forming part 21, a positioning hole 22, a bulge 23, an upper limiting column 24, a spring 25, a first air cylinder 26, a second air cylinder 27 and an ejector rod 28.
Detailed Description
The invention is further described in detail below with reference to the accompanying drawings, and specific embodiments are given.
Example 1
As shown in fig. 2 and 3, a device for eliminating stress of a stamping part comprises an upper die and a lower die which are matched with each other, wherein the upper die comprises an upper die base 3, an upper backing plate 8, an upper clamping plate 9 and an upper die plate 10 which are connected in sequence from top to bottom by taking the orientation in fig. 2 as an example. The upper die plate 10 comprises an upper die forming part 11 and an upper die outer plate 12 located on the outer side of the upper die forming part 11, the middle of the upper die forming part 11 is in the shape of an inwards concave circular groove, and a plurality of positioning columns 13 are fixed in the middle of the upper die forming part 11, namely the inwards concave circular groove.
The length and width dimensions of the cross sections of the upper base plate 8, the upper clamping plate 9 and the upper die plate 10 are all consistent, and the length and width dimensions of the upper die base 3 are all larger than the upper base plate 8. The upper die base 3 and the upper backing plate 8 are fixed through bolts, upper limiting columns 24 are fixed at four corners of the upper die base 3, the upper limiting columns 24 are located on the periphery of the upper backing plate 8, and one end, far away from the upper die base 5, of each upper limiting column 24 is flush with the lower end of the upper die plate 10. As shown in fig. 6, a spring 25 is fixed to an end of the upper mold member 11 close to the upper mold base 5, and an end of the spring 25 away from the upper mold member 11 is fixed to the upper mold base 3. Be fixed with first flexible post (not shown in the figure) between last mould planking 12 and the upper die base 3, specific first flexible post includes first sleeve and the first loop bar of sliding connection in first sleeve, and first sleeve one end is fixed in the one end that upper die base 3 is close to cope match-plate pattern 10, and the first sleeve other end is uncovered form, and first loop bar one end sliding connection is in first sleeve, and first loop bar other end is fixed in the one end that upper die plate 10 is close to upper die base 3, and first sleeve is fixed on upper die base 3. Four first cylinders 26 are uniformly distributed at one end of the upper die base 3 close to the upper die plate 10, and output shafts of the first cylinders 26 penetrate through the upper backing plate 8 and the upper clamping plate 9 and are fixed on the upper die outer plate 12 of the upper die plate 10.
Referring to fig. 4 and 5, the lower mold includes a lower mold plate 18, a lower backing plate 17, a lower clamp plate 16, a lower mold base 5, a lower backing foot, and a lower support plate 4, which are fixedly connected in sequence from top to bottom. The lower template 18 comprises a lower mold part 21, an annular disc 20 and a lower mold outer plate 19 which are sequentially connected from inside to outside, wherein a convex disc protruding upwards is formed in the middle of the lower mold part 21, and when the upper mold and the lower mold are closed, a mold cavity for placing the pressure plate 1 is formed between the upper mold part 11 and the lower mold part 21. The convex disc is provided with a plurality of positioning holes 22, and when the die is closed, the positioning columns 13 on the upper die forming part 11 can be inserted into the positioning holes 22 to realize positioning. A plurality of protrusions 23 are uniformly distributed on the annular disc 20 along the circumferential direction, the upper surfaces of the protrusions 23 are horizontal or arc-shaped, in this embodiment, the protrusions 23 are cuboid, the upper surfaces of the protrusions 23 are horizontal, and all the protrusions 23 form a grid-like shape on the annular disc 20.
The length and width dimensions of the cross sections of the lower template 18, the lower cushion plate 17, the lower clamping plate 16 and the upper cushion plate 8 are all consistent, and the length and width dimensions of the cross sections of the upper die base 3 and the lower die base 5 are consistent. The bottom plate 4 is used for fixing on the processing equipment, and 4 four angles departments of bottom plate all are fixed with down spacing post 7, and the upper end parallel and level of lower bolster 18 are run through to spacing post 7 top 5 and lower spacing post 7 down, and four spacing posts 7 are located around 16 lower splint respectively down, and when the compound die, the top of four spacing posts 7 down offsets with the bottom of four spacing posts 24 on respectively. The lower cushion foot comprises three rectangular supporting plates 6, the supporting plates 6 are fixed on the lower supporting plate 4 through bolts, and the upper ends of the lower cushion foot are fixed on the lower die seat 5 through bolts. The lower clamping plate 16 is fixed on the lower die base 5 through bolts. The upper end of the lower die base 5 is circumferentially fixed with four second telescopic columns 15, each second telescopic column 15 comprises a second sleeve and a second loop bar which is slidably connected into the second sleeve, the lower end of each second loop bar is fixed on the lower die base 5, and the upper end of each sleeve is fixed on the upper die base 3.
The lower die plate 18 is vertically connected to a lower die in a sliding mode, an ejector rod 28 is fixed below the lower die forming part 21 on the lower die base 5, a through hole for the ejector rod 28 to pass through is formed in the lower die forming part 21, and the upper end of the ejector rod 28 penetrates through the lower clamping plate 16 and the lower backing plate 17 and then is inserted into the through hole. Four second air cylinders 27 are further fixed on the lower die holder 5 along the circumferential direction, and output shafts of the second air cylinders 27 penetrate through the lower clamping plate 16 and then are fixed on the lower backing plate 17.
When the pressing plate is used specifically, the upper die is driven to slide upwards to be away from the lower die, a space is reserved between the upper die plate 10 and the lower die plate 18, the pressing plate 1 can be placed in the lower die forming part 21, and the flange face 2 of the pressing plate 1 is contacted with the protrusion 23. Meanwhile, the second cylinder drives the lower template 18 to slide upwards, the lower mold part 21 slides upwards relative to the ejector rod 28, the ejector rod 28 is not inserted into the through hole any more, and the mold can be closed.
The upper die is slid downward so that the upper die plate 10 and the upper surface of the platen 1 are in contact, and the upper die-formed piece 11 and the lower die-formed piece 21 press-fit the platen 1 in the die cavity. The first air cylinder 26 is started, the first air cylinder 26 drives the upper template 10 to continuously slide downwards, the flange face 2 of the pressure plate 1 is extruded by the upper template 10 and the lower template 18, the flange face 2 abuts against the bulge 23, the bulge 23 has an upward supporting and buffering effect on the pressure plate 1, the bulge 23 dispersedly absorbs downward pressure of the upper die, and internal stress generated by the flange face 2 is reduced. The bulges 23 are arranged in an annular grid shape, the upper surfaces of the bulges 23 are horizontal, the contact area of the bulges 23 and the pressure plate 1 is increased, microcracks possibly generated on the workpiece when the bulges 23 extrude the workpiece are further reduced, and the processing quality of the pressure plate 1 is improved. The protrusions 23 are pressed to generate indentations or even depressions on the flange surface 2, that is, in the scheme, the indentations or even depressions are formed on the lower surface of the flange surface 2, and the indentations or depressions on the lower surface of the flange surface 2 need to be machined and removed subsequently.
After the machining is completed, the second air cylinder drives the lower template 18 to slide downwards, so that the ejector rods 28 are inserted into the through holes and eject the pressure plate 1 upwards. During the process of machining the pressure plate 1, the pressure plate 1 may be forced to be clamped on the protrusions 23, so that the ejector rods 28 are provided to facilitate the removal of the pressure plate 1.
Example 2
The present embodiment differs from the present embodiment only in that: the protrusion 23 has elasticity, and specifically, the protrusion 23 may be made of rubber. The bulge 23 has the deformation capacity, can provide better deformation buffer effect for the pressure plate 1 when being extruded, and reduces the indentation of the bulge 23 on the surface of the pressure plate 1, thereby being convenient for subsequent processing.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. The utility model provides a device for stamping workpiece stress relief, includes the last mould and the lower mould of mutually supporting, goes up the mould and includes the mould formed part, and the lower mould includes the lower mould formed part corresponding with last mould formed part, goes up the mould chamber that forms between mould formed part and the lower mould formed part and supply the pressure disk to place, its characterized in that: the lower die also comprises an annular disc arranged on the outer side of the lower die forming part, a plurality of bulges are uniformly distributed on the surface of one side of the annular disc, which faces the upper die forming part, so that the surface of the annular disc is in a grid shape, and the upper surfaces of the bulges are in a horizontal shape or an arc shape; the lower die forming part is connected to the lower die in a sliding mode, an ejector rod used for ejecting a pressure plate clamped on the protrusion is fixed below the lower die forming part on the lower die, and a through hole for the ejector rod to pass through is formed in the lower die forming part.
2. A device for stress relieving stamping according to claim 1, wherein: the upper die further comprises an upper die base located above the upper die forming part, and an elastic part is fixed between the upper die base and the upper die forming part.
3. A device for stress relieving stamping according to claim 2, wherein: a first telescopic column is further fixed between the upper die forming part and the upper die base.
4. A device for stress relieving stamping according to claim 3, wherein: the lower die further comprises a lower die base located below the lower die forming part, and a second telescopic column is fixed between the lower die base and the upper die base.
5. A device for stress relieving stamping according to claim 1, wherein: a positioning column is fixed in the middle of the lower end of the upper die forming part, a positioning hole is fixed in the middle of the upper end of the lower die forming part, and the positioning column can be inserted into the positioning hole during die assembly.
6. A device for stress relief of a stamping according to claim 4, wherein: the circumference that the upper die base lower extreme is located the last mould formed part is fixed with upper limit post, and the circumference that the die holder upper end is located the lower mould formed part is fixed with lower limit post, and upper limit post offsets with lower limit post terminal surface.
7. A device for stress relieving stamping according to claim 1, wherein: the protrusion has elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921852585.4U CN211304453U (en) | 2019-10-31 | 2019-10-31 | Device for eliminating stress of stamping part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921852585.4U CN211304453U (en) | 2019-10-31 | 2019-10-31 | Device for eliminating stress of stamping part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211304453U true CN211304453U (en) | 2020-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921852585.4U Withdrawn - After Issue CN211304453U (en) | 2019-10-31 | 2019-10-31 | Device for eliminating stress of stamping part |
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| Country | Link |
|---|---|
| CN (1) | CN211304453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605334A (en) * | 2019-10-31 | 2019-12-24 | 凌云西南工业有限公司 | Pressure plate die |
-
2019
- 2019-10-31 CN CN201921852585.4U patent/CN211304453U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110605334A (en) * | 2019-10-31 | 2019-12-24 | 凌云西南工业有限公司 | Pressure plate die |
| CN110605334B (en) * | 2019-10-31 | 2024-02-09 | 凌云西南工业有限公司 | Platen die |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200821 Effective date of abandoning: 20240209 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200821 Effective date of abandoning: 20240209 |