CN213162676U - Die for punch forming of thin-wall cylindrical workpiece - Google Patents
Die for punch forming of thin-wall cylindrical workpiece Download PDFInfo
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- CN213162676U CN213162676U CN202021465966.XU CN202021465966U CN213162676U CN 213162676 U CN213162676 U CN 213162676U CN 202021465966 U CN202021465966 U CN 202021465966U CN 213162676 U CN213162676 U CN 213162676U
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Abstract
The utility model discloses a die for punch forming of thin-wall cylindrical workpieces, which is used for forming through holes at the bottom of the workpiece with a thin-wall cylindrical shell and comprises a punch rod, wherein the punch rod comprises a punch head; the die core comprises a die core body, a punched hole is formed in the die core body, a cylindrical accommodating cavity is formed in the end, facing the punching rod, of the punched hole, and an outlet is formed in the end, far away from the cylindrical accommodating cavity, of the punched hole; the inner diameter of the cylindrical accommodating cavity is in clearance fit with the outer diameter of the processed thin-wall cylindrical workpiece, and the punch is in clearance fit with the punching hole; the processed thin-wall cylindrical workpiece is accommodated in the cylindrical accommodating cavity, the cylindrical accommodating cavity is formed in the die core, the thin-wall cylindrical workpiece is accommodated in the cylindrical accommodating cavity, and therefore when the punch applies pressure to the thin-wall cylindrical workpiece, the inner wall of the cylindrical accommodating cavity can limit the outer wall of the thin-wall cylindrical workpiece, and deformation of the thin-wall cylindrical workpiece is prevented.
Description
Technical Field
The utility model belongs to the technical field of stamping forming mould, specifically speaking relates to a thin wall tube-shape work piece is mould for stamping forming.
Background
The stamping die is a special process equipment for processing materials (metal or nonmetal) into parts (or semi-finished products) in cold stamping, and is called cold stamping die (commonly called cold stamping die). Stamping is a press working method in which a die mounted on a press is used to apply pressure to a material at room temperature to cause separation or plastic deformation of the material, thereby obtaining a desired part.
In the processing process of punching through holes at the bottom of some thin-wall cylindrical workpieces, a punching rod needs to extend into the bottom of the thin-wall cylindrical workpiece, and the bottom material of the thin-wall cylindrical workpiece is pressed to be separated by matching with punching of a punching die core, but the thin-wall cylindrical workpiece is easy to deform in the process of applying pressure, so that the thin-wall cylindrical workpiece punched by using a traditional die is deformed after being formed, the size required by design is difficult to achieve, and the defective rate is greatly improved.
Disclosure of Invention
The utility model aims at providing a thin wall tube-shape work piece is mould for stamping forming, its technical problem who exists in aiming at solving the background art.
In order to solve the technical problem, the purpose of the utility model is to realize like this:
a die for punch forming of thin-wall cylindrical workpiece for forming through hole at bottom of workpiece with thin-wall cylindrical shell is composed of a die body with a cylindrical shell
A punch bar comprising a punch;
the die core comprises a die core body, a punched hole is formed in the die core body, a cylindrical accommodating cavity is formed in the end, facing the punching rod, of the punched hole, and an outlet is formed in the end, far away from the cylindrical accommodating cavity, of the punched hole;
the inner diameter of the cylindrical accommodating cavity is in clearance fit with the outer diameter of the processed thin-wall cylindrical workpiece, and the punch is in clearance fit with the punching hole; and the processed thin-wall cylindrical workpiece is accommodated in the cylindrical accommodating cavity.
On the basis of the above scheme and as a preferable scheme of the scheme: the end part of the punch is provided with a stamping part, the outer diameter of the stamping part is larger than that of the punch, and the stamping part can enter the punch.
On the basis of the above scheme and as a preferable scheme of the scheme: the punch transitions to the punch through a tapered face.
On the basis of the above scheme and as a preferable scheme of the scheme: the end, deviating from the punch, of the stamping part is provided with a guide part.
On the basis of the above scheme and as a preferable scheme of the scheme: the guide portion transitions into the punch portion via a tapered surface.
On the basis of the above scheme and as a preferable scheme of the scheme: the punching hole is sequentially divided into a separating and forming section and a buffering section from the inlet side to the outlet side, the length of the separating and forming section is not less than the wall thickness of the part to be separated of the processed thin-wall cylindrical workpiece, and a buffering assembly is arranged in the buffering section.
On the basis of the above scheme and as a preferable scheme of the scheme: the buffer assembly comprises buffer blocks symmetrically and fixedly arranged on the inner wall of the punched hole, and one end, facing the separation forming section, of each buffer block is provided with an inclined plane.
On the basis of the above scheme and as a preferable scheme of the scheme: the cross section of the buffer block is triangular.
On the basis of the above scheme and as a preferable scheme of the scheme: and a funnel-shaped discharge port is formed in the discharge port of the punched hole.
Compared with the prior art, the utility model outstanding and profitable technological effect is: the die core is provided with the cylindrical accommodating cavity, the thin-wall cylindrical workpiece is accommodated in the cylindrical accommodating cavity, and therefore when the punch rod applies pressure to the thin-wall cylindrical workpiece, the inner wall of the cylindrical accommodating cavity can limit the outer wall of the thin-wall cylindrical workpiece, and the thin-wall cylindrical workpiece is prevented from deforming. In addition, the arrangement of the punching part enables the punch to take the thin-wall cylindrical workpiece out of the cylindrical accommodating cavity by means of friction generated by the punching part and the thin-wall cylindrical workpiece in the process that the punching rod is withdrawn from the mold core after the bottom of the thin-wall cylindrical workpiece is punched and molded, so that the separation of the thin-wall cylindrical workpiece and the mold core is realized, the mold structure is simplified, and the production procedures are reduced.
Drawings
FIG. 1 is a schematic structural diagram of a thin-wall cylindrical workpiece blank to be machined;
FIG. 2 is a schematic structural view of a thin-walled cylindrical workpiece after forming;
fig. 3 is a schematic view of the overall structure of the present invention;
FIG. 4 is a sectional view of the mold insert structure;
FIG. 5 is a right side view of the mold insert structure;
fig. 6 is an enlarged schematic view of the punch portion.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
A die for punch forming of a thin-wall cylindrical workpiece is used for forming a through hole 13 with the bottom of the thin-wall cylindrical workpiece 1, and the thin-wall cylindrical workpiece 1 comprises a workpiece body 11 and a workpiece body bottom 12, and the punch forming aims to apply pressure to the workpiece body bottom 12 so that the part of the workpiece body bottom 12 is separated from the workpiece body 11 to form the through hole 13.
The punching rod 2 comprises a punch 21, a punching part 211 is arranged at the end part of the punch 21, the outer diameter of the punching part 211 is larger than that of the punch 21, the punching part 211 can enter a punching hole 33, so that pressure is applied to the bottom 12 of the workpiece body, partial materials at the bottom of the workpiece body are separated from the bottom 12 of the workpiece body, in addition, the arrangement of the punching part enables the punch to take out the thin-wall cylindrical workpiece from a cylindrical containing cavity by means of friction generated by the punching part and the thin-wall cylindrical workpiece in the process that the punching rod is withdrawn from the mold core after the bottom of the thin-wall cylindrical workpiece is punched and formed, so that the separation of the thin-wall cylindrical workpiece and the mold core is realized, the mold structure is simplified, and. Preferably, the punch portion 211 transitions to the punch 21 via a tapered surface 2112, thereby increasing the strength and impact resistance of the punch portion 211. In this embodiment, it is further preferable that the end of the punch part 211 facing away from the punch 21 is provided with a guide part 2113, and the guide part 2113 transitions to the punch part 211 through a tapered surface, thereby reducing the punching force of the punch 2.
The mold core 3, the mold core 3 includes the mold core body 31, the mold core body 31 has a punched hole 33, the end of the punched hole 33 facing the punch rod 2 has a cylindrical containing cavity 32, and the end of the punched hole 33 far away from the cylindrical containing cavity 32 is an outlet 3321; the inner diameter of the cylindrical accommodating cavity 32 is in clearance fit with the outer diameter of the processed thin-wall cylindrical workpiece 1, and the punch 21 is in clearance fit with the punched hole 33; the processed thin-wall cylindrical workpiece 1 is accommodated in the cylindrical accommodation chamber 32.
In this embodiment, it is further preferable that the punched hole 33 is sequentially divided into a separated forming section 331 and a buffer section 332 along an inlet side to an outlet side thereof, the length of the separated forming section 331 is not less than the wall thickness of the bottom portion 12 of the workpiece body, and the buffer section 32 is provided with the buffer assembly 34 therein. Specifically, the buffering component 34 includes buffering blocks 341 symmetrically fixed on the inner wall of the punched hole 33, and one end of the buffering block 341 facing the separating and forming section 331 has an inclined surface. It is preferable that the cross section of the buffer block 341 is triangular.
Further, in order to facilitate discharge of the scrap 14 at the discharge port of the punched hole 33, it is preferable that the discharge port 3321 of the punched hole is provided with a funnel-shaped discharge port 332.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a thin wall tube-shape work piece stamping forming uses mould, its through-hole shaping that is used for the work piece bottom that has thin wall tube-shape casing, its characterized in that: comprises that
A punch bar comprising a punch;
the die core comprises a die core body, a punched hole is formed in the die core body, a cylindrical accommodating cavity is formed in the end, facing the punching rod, of the punched hole, and an outlet is formed in the end, far away from the cylindrical accommodating cavity, of the punched hole;
the inner diameter of the cylindrical accommodating cavity is in clearance fit with the outer diameter of the processed thin-wall cylindrical workpiece, and the punch is in clearance fit with the punching hole; and the processed thin-wall cylindrical workpiece is accommodated in the cylindrical accommodating cavity.
2. The die for press-forming a thin-walled cylindrical workpiece according to claim 1, wherein: the end part of the punch is provided with a stamping part, the outer diameter of the stamping part is larger than that of the punch, and the stamping part can enter the punch.
3. The die for press-forming a thin-walled cylindrical workpiece according to claim 2, wherein: the punch transitions to the punch through a tapered face.
4. The die for press-forming a thin-walled cylindrical workpiece according to claim 3, wherein: the end, deviating from the punch, of the stamping part is provided with a guide part.
5. The die for press-forming a thin-walled cylindrical workpiece according to claim 4, wherein: the guide portion transitions into the punch portion via a tapered surface.
6. The die for press-forming a thin-walled cylindrical workpiece according to claim 1, wherein: the punching hole is sequentially divided into a separating and forming section and a buffering section from the inlet side to the outlet side, the length of the separating and forming section is not less than the wall thickness of the part to be separated of the processed thin-wall cylindrical workpiece, and a buffering assembly is arranged in the buffering section.
7. The die for press-forming a thin-walled cylindrical workpiece according to claim 6, wherein: the buffer assembly comprises buffer blocks symmetrically and fixedly arranged on the inner wall of the punched hole, and one end, facing the separation forming section, of each buffer block is provided with an inclined plane.
8. The die for press-forming a thin-walled cylindrical workpiece according to claim 7, wherein: the cross section of the buffer block is triangular.
9. The die for press-forming a thin-walled cylindrical workpiece according to claim 8, wherein: and a funnel-shaped discharge port is formed in the discharge port of the punched hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021465966.XU CN213162676U (en) | 2020-07-22 | 2020-07-22 | Die for punch forming of thin-wall cylindrical workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021465966.XU CN213162676U (en) | 2020-07-22 | 2020-07-22 | Die for punch forming of thin-wall cylindrical workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213162676U true CN213162676U (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021465966.XU Active CN213162676U (en) | 2020-07-22 | 2020-07-22 | Die for punch forming of thin-wall cylindrical workpiece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749552A (en) * | 2022-05-20 | 2022-07-15 | 无锡市通亦和精密机械有限公司 | Annular thin-wall part punch and clutch plate fine blanking process |
-
2020
- 2020-07-22 CN CN202021465966.XU patent/CN213162676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749552A (en) * | 2022-05-20 | 2022-07-15 | 无锡市通亦和精密机械有限公司 | Annular thin-wall part punch and clutch plate fine blanking process |
| CN114749552B (en) * | 2022-05-20 | 2023-08-25 | 通亦和精工科技(无锡)股份有限公司 | Fine stamping process for clutch plate |
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