CN103909202B - A kind of screw cold-heading device and cold heading technique thereof - Google Patents
A kind of screw cold-heading device and cold heading technique thereof Download PDFInfo
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- CN103909202B CN103909202B CN201210591710.7A CN201210591710A CN103909202B CN 103909202 B CN103909202 B CN 103909202B CN 201210591710 A CN201210591710 A CN 201210591710A CN 103909202 B CN103909202 B CN 103909202B
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Abstract
The present invention relates to a kind of screw cold-heading device and cold heading technique thereof, this device includes feed mechanism, shut-off mechanism, connecting gear and six moulds, and wherein, described feed mechanism is corresponding with the position of shut-off mechanism；Described connecting gear is moving feeding between described feed mechanism and six moulds；First mould is used for forming threading bar；Second mould is used for pre-upsetting big bar portion；3rd mould carries angle for big bar portion；4th mould forms chamfering for head material all in one piece and at threading tail end；5th mould is for forming little bar portion and head hexagon at threading tail end；6th mould is for forming five groove faces essence upsetting hexagonal and flange face.The present invention carries out cold-heading processing by six moulds to workpiece, omits machining processes, saves raw material and improve operating efficiency.
Description
Technical field
The present invention relates to technical field of mold, particularly to a kind of screw cold-heading device for connecting brake pedal
And cold heading technique.
Background technology
Generally, vehicle all has a brake pedal assembly including a pedal arm and a mat, is used for subtracting
Speed and parking.The production technology being presently used for connecting the screw of brake pedal includes: cold-heading, threading, Re Chu
Reason, electroplating and machine, wherein, cold-heading is with cold headers, wire rod cold forming to become blank, threading are to rub with the hands
Making special screw thread, heat treatment is to make the hardness of described screw reach HRC32 ~ HRC39, plating be into
The special surface of row processes and improves the antiseptic property of part, and machining is that the screw to first one-step forming carries out precision
Dimensioned, including tail end little bar portion, threading bar portion and the processing of flange face.
Existing technique has the disadvantage in that
1. machining processes adds the loaded down with trivial details degree of technique, reduces production efficiency；
2. machining processes can produce certain waste material, thus improve cost of material；
3. may result in workpiece breakage in process, risk is high.
Summary of the invention
The present invention provides a kind of screw cold-heading device and cold heading technique thereof, to solve screw cold-heading dress in prior art
Put and cold heading technique production efficiency is low, breakage risk is high, cost is high problem.
For solving above-mentioned technical problem, the present invention provides a kind of screw cold-heading device, including feed mechanism, cut-out
Mechanism, connecting gear and six moulds, wherein,
Described feed mechanism is corresponding with the position of shut-off mechanism；
Described connecting gear is moving feeding between described feed mechanism and six moulds；
First mould is used for forming threading bar；
Second mould is used for pre-upsetting big bar portion；
3rd mould carries angle for big bar portion；
4th mould forms chamfering for head material all in one piece and at threading tail end；
5th mould is for forming little bar portion and head hexagon at threading tail end；
6th mould is for forming five groove faces essence upsetting hexagonal and flange face.
It is preferred that described six moulds all include main mould and punch die, described main mould include main formwork, main die,
Main mould push rod and main mould thimble, described main formwork is located at described main die and the outside of main mould thimble, described master
Being provided with master cast chamber in die, described main mould push rod is fixing with one end of described main mould thimble to be connected, described main mould
The other end of thimble penetrates in described master cast chamber；Described punch die includes punch die cushion block, punch die shell and punch die top
Pin, described punch die shell is located at outside described punch die thimble, and described punch die cushion block is solid with one end of described punch die thimble
Fixed connection, the other end of described punch die thimble passes described punch die shell.
It is preferred that described second, the four, the 5th moulds respectively further comprise die springs, described die springs sets
Between described punch die cushion block and punch die thimble.
It is preferred that described second, the four, the 5th moulds also include punch die benevolence, it is respectively equipped with in described punch die benevolence
Die cavity, described punch die thimble can pass described die cavity.
It is preferred that described six moulds all use forward extrusion technique to be processed.
It is preferred that described connecting gear uses clip.
Present invention also offers a kind of screw cold heading technique, use screw cold-heading device as above, including:
Shear wire rod feeding；
The threading bar footpath of intense beam wire rod；
Pre-upsetting big bar portion；
Suppress technique and carry angle, and control wire size；
Material all in one piece in threading tail end bundle chamfering；
Threading tail end bundle little bar portion, punch die bundle head hexagon；
Restraint five groove faces essence upsetting turret head and flange face.
Compared with prior art, the invention have the advantages that
1. the machine that The present invention reduces adds tail end little bar portion, threading bar portion and the operation of flange face, substantially increases life
Produce efficiency (55 times)；
2. decreasing the machining processes loss to raw material, the material quantity needed for making single part compares prior art
Save 19.3%；
3. improve relative screw intensity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the screw cold-heading device of the embodiment of the invention；
Fig. 2 is the structural representation of the first mould of the embodiment of the invention；
Fig. 3 is the structural representation of the 5th mould of the embodiment of the invention.
In figure: 100-feed mechanism, 200-shut-off mechanism, 300-connecting gear, 400-mould, 410-the first mould
Tool, the main formwork of 411-, the main die of 412-, 413-main mould push rod, 414-main mould thimble, 415-master cast chamber, 416-
Punch die cushion block, 417-punch die shell, 418-punch die thimble, 420-the second mould, 430-the 3rd mould, 440-the 4th
Mould, 450-the 5th mould, 451-die springs, 452-punch die benevolence, 453-die cavity, 460-the 6th mould,
500-workpiece.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with the accompanying drawings to this
The detailed description of the invention of invention is described in detail.It should be noted that, accompanying drawing of the present invention all uses the form of simplification
And all use non-ratio accurately, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
The screw cold-heading device that the present invention provides, as shown in Figure 1 to Figure 3, including feed mechanism 100, cuts off
Mechanism 200, connecting gear 300 and six moulds 400, wherein,
Described feed mechanism 100 is corresponding with the position of shut-off mechanism 200；Described connecting gear 300 send described
Moving feeding between material mechanism 100 and six moulds 400, it is preferred that described connecting gear 300 uses folder
Son；
First mould 410 is used for forming threading bar；
Second mould 420 is for pre-upsetting big bar portion；
3rd mould 430 carries angle for big bar portion；
4th mould 440 forms chamfering for head material all in one piece and at threading tail end；
5th mould 450 is for forming little bar portion and head hexagon at threading tail end；
6th mould 460 is for forming five groove faces essence upsetting hexagonal and flange face, it is preferred that described six moulds
Tool 400 all uses forward extrusion technique to be processed, to improve the intensity of shaped article.In the present invention, first,
Second, third, the 4th mould 410,420,430,440 mass motion in the course of the work is to raw-material
Wire rod, i.e. workpiece 500 carry out cold-heading molding, and the 5th mould 450 restraints out hexagonal head type and tail end little bar portion,
6th mould 460 restraints five groove face shaping hexagonals and flange face, eliminates process for machining of the prior art step
Suddenly, save raw-material on the basis of improve production efficiency, in the present embodiment, its production efficiency is compared to existing
Technology improves 55 times.
It is preferred that refer to Fig. 2, described six moulds 400 all include main mould and punch die, and this sentences the first mould
As a example by tool 410, described main mould includes main formwork 411, main die 412, main mould push rod 413 and main mould top
Pin 414, described main formwork 411 is located at described main die 412 and the outside of main mould thimble 413, described main mould
Being provided with master cast chamber 415 in benevolence 412, one end of described main mould push rod 413 and described main mould thimble 414 is fixed
Connecting, the other end of described main mould thimble 414 penetrates in described master cast chamber 415；Described punch die includes punch die
Cushion block 416, punch die shell 417 and punch die thimble 418, described punch die shell 417 is located at described punch die thimble 418
Outside, described punch die cushion block 416 is fixing with one end of described punch die thimble 418 to be connected, described punch die thimble 418
The other end pass described punch die shell 417.
It is preferred that refer to Fig. 1 and Fig. 3, described second, the four, the 5th moulds 420,440,450 are also
Including die springs 451 respectively, as a example by this sentences the 5th mould 450, described die springs 451 is located at described
Between punch die cushion block 416 and punch die thimble 418, it is preferred that described second, the four, the 5th moulds 420,
440,450, still as a example by the 5th mould 450, also include punch die benevolence 452, divide in described punch die benevolence 452
Not being provided with die cavity 453, described punch die thimble 418 can pass described die cavity 453.It is preferred that
Acting as of described die springs 451, first, it is to avoid between part and workpiece 500, hard contact causes zero
Part or workpiece 500 damage；Second, workpiece 500 is completed in described die cavity 453 one-tenth of head
After type, described workpiece 500 is released described die cavity by the elastic force effect recycling described die springs 451
In 453.
Present invention also offers a kind of screw cold heading technique, please continue to refer to Fig. 1, use screw as above
Cold-heading device, including:
Shear wire rod feeding；
The threading bar footpath of intense beam wire rod；
Pre-upsetting big bar portion；
Suppress technique and carry angle, and control wire size；
Material all in one piece in threading tail end bundle chamfering；
Threading tail end bundle little bar portion, punch die bundle head hexagon；
Restraint five groove faces essence upsetting turret head and flange face.
In sum, the screw cold-heading device of present invention offer and cold heading technique thereof, this device includes feed mechanism
100, shut-off mechanism 200, connecting gear 300 and six moulds 400, wherein, described feed mechanism 100
Corresponding with the position of shut-off mechanism 200；Described connecting gear 300 is at described feed mechanism 100 and six moulds
Moving feeding between tool 400；First mould 410 is used for forming threading bar；Second mould 420 is big for pre-upsetting
Bar portion；3rd mould 430 carries angle for big bar portion；4th mould 440 is for head material all in one piece and at threading tail end
Form chamfering；5th mould 450 is for forming little bar portion and head hexagon at threading tail end；6th mould
460 for forming five groove faces essence upsetting hexagonal and flange face.The present invention by six moulds 410,420,430,
440,450,460 pairs of workpieces 500 carry out cold-heading processing, omit machining processes, save raw material also
Improve operating efficiency.
Obviously, those skilled in the art can carry out various change and modification without deviating from the present invention's to invention
Spirit and scope.So, if these amendments of the present invention and modification belong to the claims in the present invention and equivalent thereof
Within the scope of technology, then the present invention is also intended to change and including modification include these.
Claims (7)
1. a screw cold-heading device, it is characterised in that include feed mechanism, shut-off mechanism, connecting gear with
And six moulds, wherein,
Described feed mechanism is corresponding with the position of shut-off mechanism；
Described connecting gear is moving feeding between described feed mechanism and six moulds；
First mould is used for forming threading bar；
Second mould is used for pre-upsetting big bar portion；
3rd mould carries angle for big bar portion；
4th mould forms chamfering for head material all in one piece and at threading tail end；
5th mould is for forming little bar portion and head hexagon at threading tail end；
6th mould is for forming five groove faces essence upsetting hexagonal and flange face.
2. screw cold-heading device as claimed in claim 1, it is characterised in that described six moulds all include main
Mould and punch die, described main mould includes main formwork, main die, main mould push rod and main mould thimble, described main formwork
It is located at described main die and the outside of main mould thimble, in described main die, is provided with master cast chamber, described main mould push rod
Fixing with one end of described main mould thimble and be connected, the other end of described main mould thimble penetrates in described master cast chamber；
Described punch die includes that punch die cushion block, punch die shell and punch die thimble, described punch die shell are located at outside described punch die thimble
Side, described punch die cushion block is fixing with one end of described punch die thimble to be connected, and the other end of described punch die thimble passes
Described punch die shell.
3. screw cold-heading device as claimed in claim 2, it is characterised in that described second, the four, the 5th
Mould respectively further comprises die springs, and described die springs is located between described punch die cushion block and punch die thimble.
4. screw cold-heading device as claimed in claim 2, it is characterised in that described second, the four, the 5th
Mould also includes punch die benevolence, is respectively equipped with die cavity in described punch die benevolence, and described punch die thimble can pass institute
State die cavity.
5. screw cold-heading device as claimed in claim 1, it is characterised in that described six moulds are just all using
Extrusion process is processed.
6. screw cold-heading device as claimed in claim 1, it is characterised in that described connecting gear uses clip.
7. a screw cold heading technique, uses screw cold-heading device as claimed in claim 1, it is characterised in that
Including:
Shear wire rod feeding；
The threading bar footpath of intense beam wire rod；
Pre-upsetting big bar portion；
Suppress technique and carry angle, and control wire size；
Material all in one piece in threading tail end bundle chamfering；
Threading tail end bundle little bar portion, punch die bundle head hexagon；
Restraint five groove faces essence upsetting turret head and flange face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591710.7A CN103909202B (en) | 2012-12-29 | 2012-12-29 | A kind of screw cold-heading device and cold heading technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591710.7A CN103909202B (en) | 2012-12-29 | 2012-12-29 | A kind of screw cold-heading device and cold heading technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103909202A CN103909202A (en) | 2014-07-09 |
| CN103909202B true CN103909202B (en) | 2016-08-17 |
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|---|---|---|---|
| CN201210591710.7A Active CN103909202B (en) | 2012-12-29 | 2012-12-29 | A kind of screw cold-heading device and cold heading technique thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493061B (en) * | 2014-12-01 | 2017-05-03 | 苏州工业园区新凯精密五金有限公司 | Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth |
| CN105983640A (en) * | 2015-03-05 | 2016-10-05 | 冯鸣 | Multi-station screw forming device |
| CN107671218B (en) * | 2017-10-30 | 2024-04-09 | 苏州新凯紧固***有限公司 | Cold heading forming process and cold heading module for manufacturing double-end tail groove cutting screw |
| CN108326226B (en) * | 2018-02-08 | 2024-03-22 | 苏州新凯紧固***有限公司 | Cold heading process and cold heading module for forming adjusting screw |
| CN109386529A (en) * | 2018-11-09 | 2019-02-26 | 宾科汽车紧固件（昆山）有限公司 | The molding structure and forming method of stud |
| CN110576143B (en) * | 2019-09-20 | 2024-07-23 | 宾科汽车紧固件（昆山）有限公司 | Cold heading device for forming screw, cold heading process and screw |
| CN114074168B (en) * | 2020-08-19 | 2024-06-18 | 宾科汽车紧固件（昆山）有限公司 | Bolt forming method and cold heading device |
| CN112387911B (en) * | 2020-10-26 | 2022-09-16 | 广州法思特精密五金有限公司 | Tooth plate capable of extruding taper of tail of screw |
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| DE4207963A1 (en) * | 1992-03-13 | 1993-09-16 | Werner Hermann Wera Werke | Screwing tool bits mfr. - in which workpiece is subjected to axial spring forces during the forming operation |
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| JPS5171869A (en) * | 1974-12-20 | 1976-06-22 | Kyowa Kogyosho Kk | REIKANTANZONYORUKAKUATAMATSUKIBORUTONO SEIZOHOHO |
| JPS58934B2 (en) * | 1981-02-12 | 1983-01-08 | 出来 賢司 | Method and device for manufacturing bolts with a bulge at the tip |
| JPS63235040A (en) * | 1987-03-23 | 1988-09-30 | Toyo Seisen Kk | Manufacture of bolt having angular head part |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4365495A (en) * | 1977-01-13 | 1982-12-28 | Aerpat A.G. | Method of making a mandrel for a self plugging blind rivet |
| DE4207963A1 (en) * | 1992-03-13 | 1993-09-16 | Werner Hermann Wera Werke | Screwing tool bits mfr. - in which workpiece is subjected to axial spring forces during the forming operation |
| CN101829756A (en) * | 2010-06-17 | 2010-09-15 | 鹏驰五金制品有限公司 | Cutting-free forming die of expansion anchor bolt |
| CN102248117A (en) * | 2011-05-31 | 2011-11-23 | 鹏驰五金制品有限公司 | Tuning-free forming die for stop bolt |
| CN203109148U (en) * | 2012-12-29 | 2013-08-07 | 宾科汽车紧固件（昆山）有限公司 | Screw cold heading device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103909202A (en) | 2014-07-09 |
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