CN109127983B - Floating nut cold heading forming die - Google Patents
Floating nut cold heading forming die Download PDFInfo
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- CN109127983B CN109127983B CN201811197823.2A CN201811197823A CN109127983B CN 109127983 B CN109127983 B CN 109127983B CN 201811197823 A CN201811197823 A CN 201811197823A CN 109127983 B CN109127983 B CN 109127983B
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- die
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- blanking
- upsetting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to a cold heading forming die for a floating nut, which comprises an upper die P and a lower die D, wherein a first station primary heading punch combination, a second station final heading punch combination and a third station blanking punch combination are sequentially arranged in the upper die P; a feeding clamp combination, a blanking die combination, a first station primary upsetting female die combination, a second station final upsetting female die combination and a third station blanking female die combination are arranged in the lower die D, a feeding device is fixedly arranged on one side of the lower die D, a feeding gripper is arranged in the feeding device, and the feeding device accurately feeds materials and parts of each station to the next station; by adopting the design of a mold cavity mechanism with an optimized structure, the mold cavity is easily and fully filled with metal, and the problem of the part that the diagonal angle is not full is effectively solved; the three cold heading stations are arranged in the same die to form, one-time heading forming is realized, mass production can be realized, cutting machining is not performed in machining, a metal streamline is good, the size precision of parts is high, the automation degree is high, and the production efficiency is effectively improved.
Description
Technical Field
The invention relates to the field of floating nut processing, in particular to a cold heading forming die for a floating nut.
Background
The general technological forming method of the floating nut at present is that an upper die floats to press balls, a metal streamline in deformation of a first station in the machining process is shown in the attached drawings 7 and 8, when the upper die and the lower die are closed, the upper die and the lower die are still, an upper punch F starts to move downwards, an extrusion blank gradually fills a die cavity when the upper punch F moves downwards, metal starts to flow towards the direction with the minimum resistance in the process, when the metal contacts a die cavity of the lower die, the surface of the die cavity and the metal contact surface generate friction force for blocking the metal flow, meanwhile, the die cavity of the lower die generates resistance force for the metal in an inclined surface mode, and the friction force and the resistance force generated by the die cavity for the metal flow simultaneously block the. The flowing of the metal begins to slow down, the external force required by the metal for filling the die cavity is increased, namely the force applied by the upper punch F is increased, when the upper punch F continues to move downwards and moves to the termination position, the die cavity is not fully filled with the metal, and finally the diagonal angle of the part is not full, so that the use requirement of the part is not met.
Therefore, a new mold cavity structure is developed to solve the problems that the metal does not fully fill the cavity and the diagonal angle of the part is not full.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cold heading forming die for a floating nut, which is used for solving the problems.
When the upper die and the lower die are closed during cold heading forming at the second station, the upper die and the lower die are still, the upper punch F starts to move downwards, the F extrudes a blank to gradually fill the die cavity when moving downwards, metal starts to flow towards the direction with the minimum resistance in the process, when the metal contacts the die cavity of the lower die, the surface of the die cavity and the metal contact surface generate friction force for obstructing metal flow, other resistance for obstructing the metal flow is not generated, the metal flow only needs to overcome the friction force, the metal flow is not obstructed, and when the upper punch F continues to move downwards and moves to the stop position, the metal can be easily and fully filled in the die cavity. At the moment, preforming preparation is made for deformation of a subsequent station, and the diagonal angle of the finally formed part is full, so that the use requirement is met.
In order to achieve the purpose, the invention provides the following technical scheme: a cold heading forming die for floating nuts comprises an upper die P and a lower die D, wherein the upper die P is installed on a machine head of a multi-station cold heading machine, and the lower die D is installed on a machine body of the multi-station cold heading machine; a first station primary upsetting male die combination, a second station final upsetting male die combination and a third station blanking male die combination are sequentially arranged in the upper die P; a feeding clamp combination, a blanking die combination, a first station primary upsetting female die combination matched with the first station primary upsetting male die combination, a second station final upsetting female die combination matched with the second station final upsetting male die combination and a third station blanking female die combination matched with the third station blanking male die combination are sequentially arranged in the lower die D, and the blanking die combination is installed on a blanking cutter mechanism of the cold header and matched with a blanking die to complete a blanking function;
and a feeding clamp combination is fixedly arranged on one side of the lower die D, a feeding gripper is arranged in the feeding clamp combination, and the feeding clamp combination accurately conveys the materials and parts of each station to the next station.
Further, a die cavity formed when the first station primary upsetting male die combination and the first station primary upsetting female die combination are closed is a cavity with two parallelogram ends.
Further, the included angle between the upper side of the chamber of the parallelogram and the vertical square is 110 degrees.
Further, the first station primary upsetting male die combination and the first station primary upsetting female die combination perform primary upsetting processing on the workpiece.
And further, the second station final upsetting male die combination and the second station final upsetting female die combination carry out secondary shaping processing on the workpiece after primary upsetting.
And further, the third station blanking male die combination and the third station blanking female die combination carry out blanking processing on the workpiece subjected to secondary shaping processing.
The invention has the beneficial effects that: by adopting the design of a mold cavity mechanism with an optimized structure, the mold cavity is easily and fully filled with metal, and the problem of the part that the diagonal angle is not full is effectively solved; the three cold heading stations are arranged in the same die to form, one-time heading forming is realized, mass production can be realized, cutting machining is not performed in machining, a metal streamline is good, the size precision of parts is high, the automation degree is high, and the production efficiency is effectively improved.
Drawings
FIG. 1 is a schematic view of the mold of the present invention;
FIG. 2 is a first station cold heading mold cavity configuration of the present invention;
FIG. 3 is a metal flow distribution of the first station cold heading die during forming according to the invention;
FIG. 4 is a blank configuration of the floating nut of the present invention as it is being initially cut;
FIG. 5 is a product profile of the floating nut of the present invention during initial upsetting;
FIG. 6 is a profile view of the floating nut of the present invention as it is final upset;
FIG. 7 is a prior art cold heading die cavity configuration;
fig. 8 shows a metal flow distribution of a conventional cold heading die during forming.
In the figure, 1-feeding clamp combination; 2, feeding a gripper; 3-combining a blanking die; 4-first station primary upsetting convex die combination; 5-first station primary upsetting female die combination; 6-second station final upsetting male die combination; 7-second station final upsetting female die combination; 8-a third station extrusion male die combination; 9-third station extrusion female die combination; p-upper mould; d-lower die.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a floating nut cold heading forming die as shown in figures 1-6, which comprises an upper die P and a lower die D, wherein the upper die P is arranged on a machine head of a multi-station cold heading machine, and the lower die D is arranged on a machine body of the multi-station cold heading machine; a first station primary upsetting punch combination 4, a second station final upsetting punch combination 6 and a third station blanking punch combination 8 are sequentially arranged in the upper die P; a feeding clamp combination 1, a blanking die combination 3, a first station primary upsetting female die combination 5 matched with the first station primary upsetting male die combination 4, a second station final upsetting female die combination 7 matched with the second station final upsetting male die combination 6 and a third station blanking female die combination 9 matched with the third station blanking male die combination 8 are sequentially arranged in the lower die D, and the blanking die combination 3 is installed on a blanking cutter mechanism of the cold header and matched with a blanking die to complete a blanking function;
and a feeding clamp assembly 1 is fixedly arranged on one side of the lower die D, a feeding gripper 2 is arranged in the feeding clamp assembly 1, and the feeding clamp assembly 1 accurately conveys materials and parts of each station to the next station.
Preferably, a mold cavity formed when the first station primary upsetting punch combination 4 and the first station primary upsetting die combination 5 are closed is a cavity with two parallelogram ends.
Preferably, the parallelogram has a chamber upper side with a vertical square included angle of 110 °.
Preferably, the first station primary upsetting punch combination 4 and the first station primary upsetting die combination 5 perform primary upsetting processing on the workpiece.
Preferably, the second station final upsetting punch combination 6 and the second station final upsetting die combination 7 perform secondary shaping processing on the workpiece after primary upsetting.
Preferably, the third station blanking male die assembly 8 and the third station blanking female die assembly 9 perform blanking processing on the workpiece subjected to the secondary shaping processing.
The invention adopts the design of a mold cavity mechanism with an optimized structure, so that the cavity is easily and fully filled with metal, and the problem of the part with an unsaturated diagonal is effectively solved; the three cold heading stations are arranged in the same die to form, one-time heading forming is realized, mass production can be realized, cutting machining is not performed in machining, a metal streamline is good, the size precision of parts is high, the automation degree is high, and the production efficiency is effectively improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. A cold heading forming die for floating nuts comprises an upper die (P) and a lower die (D), and is characterized in that the upper die (P) is installed on a machine head of a multi-station cold heading machine, and the lower die (D) is installed on a machine body of the multi-station cold heading machine; a first station primary upsetting punch combination (4), a second station final upsetting punch combination (6) and a third station blanking punch combination (8) are sequentially arranged in the upper die (P); a feeding clamp combination (1), a blanking die combination (3), a first station primary upsetting female die combination (5) matched with the first station primary upsetting male die combination (4), a second station final upsetting female die combination (7) matched with the second station final upsetting male die combination (6) and a third station blanking female die combination (9) matched with the third station blanking male die combination (8) are sequentially arranged in the lower die (D), and the blanking die combination (3) is installed on a blanking cutter mechanism of the cold header and matched with the blanking die to complete a blanking function;
a feeding clamp combination (1) is fixedly arranged on one side of the lower die (D), a feeding gripper (2) is arranged in the feeding clamp combination (1), and the feeding clamp combination (1) accurately conveys materials and parts of each station to the next station;
the first station primary upsetting male die combination (4) and the first station primary upsetting female die combination (5) form a die cavity when being closed, the die cavity is a cavity with two parallelogram ends, and the upper side of the cavity of the parallelogram and the vertical square included angle are 110 degrees.
2. The cold heading forming die for the floating nut as claimed in claim 1, wherein: and the first station primary upsetting male die combination (4) and the first station primary upsetting female die combination (5) are used for carrying out primary upsetting processing on the workpiece.
3. The cold heading forming die for the floating nut as claimed in claim 1, wherein: and the second station final upsetting male die combination (6) and the second station final upsetting female die combination (7) perform secondary shaping processing on the workpiece after primary upsetting.
4. The cold heading forming die for the floating nut as claimed in claim 1, wherein: and the third station blanking male die combination (8) and the third station blanking female die combination (9) carry out blanking processing on the workpiece subjected to secondary shaping processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197823.2A CN109127983B (en) | 2018-10-15 | 2018-10-15 | Floating nut cold heading forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197823.2A CN109127983B (en) | 2018-10-15 | 2018-10-15 | Floating nut cold heading forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109127983A CN109127983A (en) | 2019-01-04 |
| CN109127983B true CN109127983B (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811197823.2A Active CN109127983B (en) | 2018-10-15 | 2018-10-15 | Floating nut cold heading forming die |
Country Status (1)
| Country | Link |
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| CN (1) | CN109127983B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743024B (en) * | 2020-12-15 | 2023-04-18 | 浙江福达合金材料科技有限公司 | Sheet-shaped electrical contact forming device and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2013460A (en) * | 1932-12-10 | 1935-09-03 | Nat Screw & Mfg Company | Method of making castle nuts |
| US2096623A (en) * | 1935-04-26 | 1937-10-19 | Midland Steel Prod Co | Method of making grommets |
| JPS5238601Y2 (en) * | 1974-08-05 | 1977-09-01 | ||
| SU1045990A1 (en) * | 1982-05-26 | 1983-10-07 | Волжское объединение по производству легковых автомобилей | Die with split female die |
| TW323245B (en) * | 1997-03-28 | 1997-12-21 | Fu Guang Ind Co Ltd | The forming machine mold apparatus for forging product and its assembling method |
| CN202343826U (en) * | 2011-10-27 | 2012-07-25 | 河南航天精工制造有限公司 | Cold heading processing device for high-strength self-locking nuts |
| CN203356523U (en) * | 2013-05-17 | 2013-12-25 | 上海东风汽车专用件有限公司 | Manufacturing device for flange nut through cold heading |
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2018
- 2018-10-15 CN CN201811197823.2A patent/CN109127983B/en active Active
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| Publication number | Publication date |
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| CN109127983A (en) | 2019-01-04 |
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