CN109127983A - A kind of captive nut cold upsetting forming die - Google Patents

A kind of captive nut cold upsetting forming die Download PDF

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Publication number
CN109127983A
CN109127983A CN201811197823.2A CN201811197823A CN109127983A CN 109127983 A CN109127983 A CN 109127983A CN 201811197823 A CN201811197823 A CN 201811197823A CN 109127983 A CN109127983 A CN 109127983A
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CN
China
Prior art keywords
station
die
upsetting
blank
punch
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Granted
Application number
CN201811197823.2A
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Chinese (zh)
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CN109127983B (en
Inventor
李龙
倪锋
张郭峰
张�林
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Zhejiang Nate Automobile Standard Component Co Ltd
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Zhejiang Nate Automobile Standard Component Co Ltd
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Priority to CN201811197823.2A priority Critical patent/CN109127983B/en
Publication of CN109127983A publication Critical patent/CN109127983A/en
Application granted granted Critical
Publication of CN109127983B publication Critical patent/CN109127983B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor

Abstract

The present invention relates to be related to being disposed with the just upsetting punch-pin combination of the first station, the combination of second station end upsetting punch-pin and the combination of 3rd station blank punch-pin in a kind of captive nut cold upsetting forming die, including upper mold P and lower die D, upper mold P;Feeding clamp combination, blank die combination, the first station just upsetting die set, second station end upsetting die set and 3rd station blank die set in lower die D, the side of lower die D is fixedly installed feed device, feeding handgrip is provided in feed device, the material and parts of each station are accurately sent to next station by feed device;It is designed using the mold cavity mechanism of structure optimization, metal is easy to adequately fill up type chamber, effectively solves the problems, such as the diagonal not full of part;Three molding modes of cold-heading station are set in same mold, and disposable upsetting is made shape, can be mass-produced, and does not have machining in processing, and metal streamline is good, while parts size precision is high, and high degree of automation effectively improves production efficiency.

Description

A kind of captive nut cold upsetting forming die
Technical field
The present invention relates to captive nut manufacture fields, and in particular to a kind of captive nut cold upsetting forming die.
Background technique
Floating current nut general technology forming method is upper mold floating pressure ball, metal stream in second station deformation in processing Line is as shown in Figure of description 2, attached drawing 3, and after upper die and lower die closure, upper die and lower die are stationary, on rush F and start downwards Movement, F extrusion billet gradually filled-type chamber when moving downward, metal starts to a line of least resistance stream during this Dynamic, when metal touches lower die die cavity, cavity surface and metal contact surface produce the frictional force for hindering metal flow, simultaneously Lower die die cavity inclined-plane produces the resistance such as red arrow direction in Fig. 3 to metal, and frictional force and die cavity are to metal flow at this time The resistance of generation hinders metal flow together.The flowing of metal start it is slack-off, metal fill up external force required for type chamber increase, i.e., The power increase for rushing F application is needed, F is rushed on and continues to move downward, when moving to final position, metal is not adequately filled up Type chamber eventually leads to the diagonal not full of part, can not meet part use.
Therefore, a kind of new mold cavity structure is developed, does not adequately fill up type chamber to solve above-mentioned metal, part Diagonal not full problem.
Summary of the invention
In view of the deficiencies of the prior art, above-mentioned to solve the present invention provides a kind of captive nut cold upsetting forming die Problem.
Metal flow direction is as shown in Figure of description 7, attached drawing 8 when second station cold-heading molding of the present invention, when upper mold and After lower die closure, upper die and lower die are stationary, on rush F and start to move downward, F extrusion billet when moving downward gradually is filled Type chamber, during this metal start to a line of least resistance flow, when metal touches lower die die cavity, cavity surface and Metal contact surface produces the frictional force for hindering metal flow, does not hinder other resistances of metal flow, metal flow only needs Overcome frictional force, the flowing of metal is not obstructed, and F is rushed on and continues to move downward, when moving to final position, metal holds very much Easily adequately fill up type chamber.At this moment preforming preparation is carried out to the deformation of subsequent work stations, the part after final molding is diagonally full, Meet requirement.
To achieve the above object, the invention provides the following technical scheme: a kind of captive nut cold upsetting forming die, including it is upper Mould P and lower die D, the upper mold P are mounted on the head of multistage cold former, and the lower die D is mounted on multistage cold former On lathe bed;The just upsetting punch-pin combination of the first station, the combination of second station end upsetting punch-pin and third work are disposed in the upper mold P Position blank punch-pin combination;Feeding clamp combination in the lower die D, blank die combination, just upsetting punch-pin combines with first station First station of cooperation just upsetting die set, the second station end upsetting cavity plate group that cooperation is combined with the second station end upsetting punch-pin The 3rd station blank die set of cooperation is closed and combines with the 3rd station blank punch-pin, the blank die combination is mounted on On the blank cutter mechanism of cold headers, cooperates with blanking die and complete blank function;
The side of the lower die D is fixedly installed feed device, and feeding handgrip, the feeding dress are provided in the feed device It sets and the material and parts of each station is accurately sent to next station.
Further, when first station just upsetting punch-pin combination and the first upsetting die set of first station are closed Being formed by mold cavity is the trapezoidal chamber in both ends.
It is further, described that " two sides are 100 ° -130 ° with vertical side's angle to trapezoidal chamber up and down.
Further, just upsetting die set carries out just upsetting to workpiece with the first station for first station just upsetting punch-pin combination Processing.
Further, the second station end upsetting punch-pin combination carries out workpiece with the second station end upsetting die set Secondary reshaping processing after first upsetting.
Further, the 3rd station blank punch-pin combination processes secondary reshaping with 3rd station blank die set Workpiece afterwards carries out blank processing.
The beneficial effects of the present invention are: the mold cavity mechanism using structure optimization designs, metal is easy to adequately fill up Type chamber effectively solves the problems, such as the diagonal not full of part;Three molding modes of cold-heading station of setting in same mold, one Shape is made in secondary property upsetting, can be mass-produced, and does not have machining in processing, and metal streamline is good, while parts size precision is high, High degree of automation effectively improves production efficiency.
Detailed description of the invention
Fig. 1 is inventive die structural schematic diagram;
Fig. 2 is existing cold upsetting die of car cavity structure;
Fig. 3 is that metal flow is distributed existing cold upsetting die of car at the time of molding;
Blahk structure when Fig. 4 is blank at the beginning of captive nut of the present invention;
Product shape figure when Fig. 5 is captive nut of the present invention just upsetting;
Product shape figure when Fig. 6 is captive nut end upsetting of the present invention;
Fig. 7 is second station cold upsetting die of car cavity structure of the present invention;
Fig. 8 is that metal flow is distributed second station cold upsetting die of car of the present invention at the time of molding.
In figure, 1- feed device;2- feeding handgrip;3- blank die combination;The just upsetting punch-pin combination of the first station of 4-;5- first Station just upsetting die set;The combination of 6- second station end upsetting punch-pin;7- second station end upsetting die set;8- 3rd station squeezes Punch-pin combination;The combination of 9- 3rd station Extruding die;P- upper mold;D- lower die.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description.
The present invention provides a kind of captive nut cold upsetting forming die as shown in figures 1-8, including upper mold P and lower die D, institutes It states upper mold P to be mounted on the head of multistage cold former, the lower die D is mounted on the lathe bed of multistage cold former;On described The first station just upsetting punch-pin combination 4, second station end upsetting punch-pin combination 6 and 3rd station blank punch-pin are disposed in mould P Combination 8;Feeding clamp combines 1, blank die combination 3, combines 4 cooperations with the first upsetting punch-pin of first station in the lower die D First station just upsetting die set 5, the second station end upsetting die set 7 that 6 cooperations are combined with the second station end upsetting punch-pin And the 3rd station blank die set 9 of 8 cooperations is combined with the 3rd station blank punch-pin, the blank die combination 3 is installed On the blank cutter mechanism of cold headers, cooperates with blanking die and complete blank function;
The side of the lower die D is fixedly installed feed device 1, and feeding handgrip 2 is provided in the feed device 1, described to send Expect that the material and parts of each station are accurately sent to next station by device 1.
Preferably, when first station just upsetting punch-pin combination 4 and first station just upsetting die set 5 are closed Being formed by mold cavity is the trapezoidal chamber in both ends.
Preferably, two sides are 100 ° -130 ° with vertical side's angle to the trapezoidal chamber up and down.
Preferably, first station just upsetting punch-pin combination 4 and the first station just upsetting die set 5 carry out just upsetting to workpiece Processing.
Preferably, the second station end upsetting punch-pin combination 6 carries out workpiece with the second station end upsetting die set 7 Secondary reshaping processing after first upsetting.
Preferably, the 3rd station blank punch-pin combination 8 processes secondary reshaping with 3rd station blank die set 9 Workpiece afterwards carries out blank processing.
The present invention is designed using the mold cavity mechanism of structure optimization, and metal is easy to adequately fill up type chamber, is effectively solved The diagonal not full problem of part;Three molding modes of cold-heading station are set in same mold, shape is made in disposable upsetting, It can be mass-produced, there is no machining in processing, metal streamline is good, while parts size precision is high, high degree of automation, Effectively improve production efficiency.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features, All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention Within protection scope.

Claims (6)

1. a kind of captive nut cold upsetting forming die, including upper mold (P) and lower die (D), which is characterized in that upper mold (P) peace On the head of multistage cold former, the lower die (D) is mounted on the lathe bed of multistage cold former;In the upper mold (P) It is disposed with the just upsetting punch-pin combination (4) of the first station, second station end upsetting punch-pin combination (6) and 3rd station blank punch set It closes (8);The interior feeding clamp combination (1) of the lower die (D), blank die combination (3) are combined with upsetting punch-pin at the beginning of first station (4) the first station cooperated just upsetting die set (5), combine with the second station end upsetting punch-pin second station that (6) cooperate Whole upsetting die set (7) and the 3rd station blank die set (9) that (8) cooperation is combined with the 3rd station blank punch-pin, The blank die combination (3) is mounted on the blank cutter mechanism of cold headers, cooperates with blanking die and completes blank function;
The side of the lower die (D) is fixedly installed feed device (1), is provided with feeding handgrip in the feed device (1) (2), the material and parts of each station are accurately sent to next station by the feed device (1).
2. a kind of captive nut cold upsetting forming die according to claim 1, it is characterised in that: first station First upsetting punch-pin combination (4) and first station are formed by mold cavity when just upsetting die set (5) is closed be both ends in ladder The chamber of shape.
3. a kind of captive nut cold upsetting forming die according to claim 2, it is characterised in that: on the trapezoidal chamber Lower two sides are greater than 100 ° -130 ° with vertical side's angle.
4. a kind of captive nut cold upsetting forming die according to claim 1, it is characterised in that: first station just upsetting Punch-pin combines (4) and the first station, and just upsetting die set (5) processes workpiece progress just upsetting.
5. a kind of captive nut cold upsetting forming die according to claim 1, it is characterised in that: the second station end upsetting Punch-pin combines (6) and the second station end upsetting die set (7) and carries out the secondary reshaping processing after just upsetting to workpiece.
6. a kind of captive nut cold upsetting forming die according to claim 1, it is characterised in that: the 3rd station blank Punch-pin combines (8) and 3rd station blank die set (9) and carries out blank processing to the workpiece after secondary reshaping processing.
CN201811197823.2A 2018-10-15 2018-10-15 Floating nut cold heading forming die Active CN109127983B (en)

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 true CN109127983A (en) 2019-01-04
CN109127983B CN109127983B (en) 2020-06-02

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Citations (7)

* Cited by examiner, † Cited by third party
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
JPS5123041U (en) * 1974-08-05 1976-02-20
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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
JPS5123041U (en) * 1974-08-05 1976-02-20
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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