CN109014003A - A kind of production method of cold upsetting die of car - Google Patents
A kind of production method of cold upsetting die of car Download PDFInfo
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- CN109014003A CN109014003A CN201811130524.7A CN201811130524A CN109014003A CN 109014003 A CN109014003 A CN 109014003A CN 201811130524 A CN201811130524 A CN 201811130524A CN 109014003 A CN109014003 A CN 109014003A
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- Prior art keywords
- core
- die
- molding
- forming
- outer core
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A kind of production method of cold upsetting die of car, includes the following steps, one, production die body make forming cavity (11) on the end face of die body；Two, outer core (4) and molding inner core (5) are formed according to the production of the cavity size of the outer dimension of forming part and forming cavity (11), the diameter of bore (S1) for forming outer core (4) is the diameter of part step on forming part, forms the thickness that the distance between outer core end face and molding inner core end face (L) are part step；Three, production penetrates through the air drain (52) of respective external wall respectively on the outer wall for forming outer core (4) and molding inner core (5)；Four, by core (4) outside the molding being combined together and molding inner core (5) indentation forming cavity (11), that is, the production of this cold upsetting die of car is completed.The advantage is that: the matrix thickness of molding inner core compared with the existing technology is bigger, and it is more sturdy and durable, have the characteristics that high impact-resistant power, therefore be hardly damaged with the mold that this method makes；Air drain can ensure that the stability of die venting, oil extraction, improve the service life of mold.
Description
Technical field
The present invention relates to a kind of Mold Making technology, a kind of especially production method of cold upsetting die of car.
Background technique
Application No. is the Chinese utility model patents of CN201220246697.7 entitled " cold-heading molding mould " for existing one kind
A kind of cold-heading molding mould is disclosed, the mold core and matrix being arranged including housing and in housing, die cavity is by mold core and matrix
Hole is collectively formed, it is characterised in that: the mold core and matrix are overall structure, and die cavity is equipped with gas vent, the gas vent into
The interior hole end surface that port is located at the matrix is close to the inner hole side wall of matrix, and exhaust outlet is located at the bottom end face of the mold core, whole
The mold core and matrix of body structure have the outer circle of cone.The advantages of utility model, has: preventing matrix damage from falling off, extends mould
Has service life, the assembly or disassembly of mold is simple and convenient.However, cold-heading molding mould film when processing the part of thinner thickness
Piece is easily damaged, and influences using effect, therefore the structure of the cold-heading molding mould also needs to be further improved.
Summary of the invention
The technical problem to be solved by the present invention is to a kind of simple process, processing are provided for above-mentioned state of the art
The production method of convenient, performance stabilization, high production efficiency cold upsetting die of car.
The technical scheme of the invention to solve the technical problem is: the production method of this cold upsetting die of car, feature
It is: includes the following steps,
One, die body is made, makes forming cavity on the end face of die body；
Two, outer core and molding inner core are formed according to the production of the cavity size of the outer dimension of forming part and forming cavity,
The diameter of bore for forming outer core is the diameter of part step on forming part, is formed between outer core end face and molding inner core end face
Distance be part step thickness；
Three, production penetrates through the air drain of respective external wall respectively on the outer wall for forming outer core and molding inner core；
Four, by core outside the molding being combined together and molding inner core indentation forming cavity, that is, the system of this cold upsetting die of car is completed
Make.
As an improvement, the outer diameter for forming outer core is preferably 0.03~0.05mm bigger than forming cavity internal diameter in step 2.
As an improvement, the diameter of bore for forming outer core is preferably bigger by 0.01 than molding inner core outer diameter in step 2
~0.02mm.
As an improvement, forming the distance between top surface and the outer core top surface of molding of inner core is preferably 0.4 in step 2
~8mm.
As an improvement, the air drain is preferably separately positioned on the outside for forming outer core and molding inner core in step 3
On wall, the air drain formed on the lateral wall of air drain and the molding inner core on outer core lateral wall is corresponded.
Be further improved, be preferably also equipped with air channel on the bottom surface for forming outer core, the air channel respectively at
Air drain on the outer core lateral wall of type corresponds.
As an improvement, the air drain is preferably equally spaced in respective external wall in step 3, the air drain
Width is 0.4~0.7mm.
It is further improved, is 2~12 positioned at the air drain quantity formed on outer outer core, in forming on outer core
Air drain quantity is 2~6.
As an improvement, the die body includes die cap, and rear cover, die-cushion and top stick, the top stick are set in step 1
In die-cushion, the rear cover is connected to the lower part of die-cushion, and the die cap is nested in the top of die-cushion, the lower part of the die cap and rear cover
Upper side wall screw thread be connected, the top of the die cap is provided with die cap through-hole, the side wall of the die cap through-hole and die-cushion top surface
Between form forming cavity.
As an improvement, the outer core of the molding and molding inner core are alloy core.
Compared with the prior art, the advantages of the present invention are as follows: it cooperates to be formed with molding inner core by forming outer core
Part step, the matrix thickness of molding inner core compared with the existing technology is bigger, more sturdy and durable, the spy with high impact-resistant power
Point, therefore be hardly damaged with the mold that this method makes, the service life of mold improves decades of times than prior art mold structure
More than；Air drain can slightly be adjusted according to the actual size and structure of part, and air drain can ensure that the stability of die venting, oil extraction,
The stability for guaranteeing manufactured part size, improves the service life of mold；Form the top surface of inner core and form outer core top surface it
Between distance be 0.4~8mm, 8mm or more can also be worked into according to the demand of part, solved because of part step thicknesses size
It is too small, matrix assembly difficulty, the puzzlement that the service life is low, die cost is high, production efficiency is low；The mold of this production method production at present
Superiority in actual production repeatedly, extensive verifying, die life obtains rapid raising than prior art construction.
In mold production process, part manufacturing cost, production efficiency, quality, the stability of part size are greatly improved, and are applicable in
In all kinds of coiled hair parts, the multi-step parts of flange step rivet and other forms are the mould structures being worthy to be popularized
Production method.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the mold of the use of the embodiment of the present invention；
Fig. 2 is the structural exploded view of Fig. 1；
Fig. 3 is the top view of Fig. 1.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in Figure 1 to Figure 3, the production method of the cold upsetting die of car of the present embodiment, includes the following steps,
One, die body is made, forming cavity 11 is made on the end face of die body；
Two, it is formed in outer core 4 and molding according to the production of the cavity size of the outer dimension of forming part and forming cavity 11
Core 5, the diameter of bore S1 for forming outer core 4 is the diameter of part step on forming part, forms outer core end face and molding inner core
The distance between end face L is the thickness of part step；
Three, production penetrates through the air drain 52 of respective external wall respectively on the outer wall for forming outer core 4 and molding inner core 5；
Four, core 4 outside the molding being combined together and molding inner core 5 are pressed into forming cavity 11, that is, complete this cold upsetting die of car
Production.
In step 2, the outer diameter S3 for forming outer core 4 is 0.03~0.05mm bigger than forming cavity internal diameter S4 in step 2, at
The diameter of bore S1 of the outer core 4 of type is 0.01~0.02mm bigger than molding inner core outer diameter S2.In step 2, molding inner core 5
The distance between top surface and the outer core top surface of molding L are 0.4~8mm.In step 3, it is outer that the air drain 52 is separately positioned on molding
On the lateral wall of core 4 and molding inner core 5, the air drain 52 on the lateral wall of the air drain 52 and molding inner core on outer core lateral wall is formed
It corresponds.Be also equipped with air channel 42 on the bottom surface for forming outer core 4, the air channel 42 respectively with the outer core lateral wall of molding
On air drain 52 correspond.In step 3, the air drain 52 is equally spaced in respective external wall, the air drain 52
Width is 0.4~0.7mm.It is 2~12 positioned at the air drain quantity formed on outer outer core, the gas in forming on outer core
Slot number is 2~6.In step 1, the die body includes die cap 1, and rear cover 2, die-cushion 3 and top stick, the top stick place
In die-cushion 3, the rear cover 2 is connected to the lower part of die-cushion 3, and the die cap 1 is nested under the top of die-cushion 3, the die cap 1
Portion is connected with the upper side wall screw thread of rear cover 2, and the top of the die cap 1 is provided with die cap through-hole, the side wall of the die cap through-hole
Forming cavity 11 is formed between die-cushion top surface.The outer core 4 of the molding and molding inner core 5 are alloy core.Alloy core is not
To limiting but to the practical application of the prior art for pressed core material.The top surface of the molding inner core 5 and the outer core 4 of molding
Upper molding cavity 41 is formed between inner hole wall, the inner hole wall of the molding inner core 5 and the bottom surface of forming cavity 11 form lower forming cavity
Body 51.
Working principle: in the prior art by placing matrix on mold core come the part step on machine-shaping part, zero
Matrix influences to reuse in dolioform after part is pressed into matrix, when part step thicknesses are less than 10mm, the thickness of matrix compared with
Thin, matrix easily broken disengaging formwork when by pressing mold impact force influences using effect, and this processing method by form outer core and
Molding inner core cooperates to realize the production of part step, avoids the use of diaphragm, is hardly damaged, cold used by extending
The service life of upsetting mold, and thickness is easy to adjust, and using effect is good.
Claims (10)
1. a kind of production method of cold upsetting die of car, it is characterised in that: include the following steps,
One, die body is made, makes forming cavity (11) on the end face of die body；
Two, it is formed in outer core (4) and molding according to the production of the cavity size of the outer dimension of forming part and forming cavity (11)
Core (5), the diameter of bore (S1) for forming outer core (4) is the diameter of part step on forming part, form outer core end face and at
The distance between type inner core end face (L) is the thickness of part step；
Three, production penetrates through the air drain (52) of respective external wall respectively on the outer wall for forming outer core (4) and molding inner core (5)；
Four, by core (4) outside the molding being combined together and molding inner core (5) indentation forming cavity (11), that is, this cold heading die is completed
The production of tool.
2. manufacturing method according to claim 1, it is characterised in that: in step 2, form the outer diameter (S3) of outer core (4)
It is 0.03~0.05mm bigger than forming cavity internal diameter (S4).
3. manufacturing method according to claim 1, it is characterised in that: in step 2, form the diameter of bore of outer core (4)
(S1) 0.01~0.02mm bigger than molding inner core outer diameter (S2).
4. manufacturing method according to claim 1, it is characterised in that: in step 2, form inner core (5) top surface at
The distance between the outer core top surface of type (L) is 0.4~8mm.
5. manufacturing method according to claim 1, it is characterised in that: in step 3, the air drain (52) is respectively set
On the lateral wall of the outer core (4) of molding and molding inner core (5), forms the air drain (52) on outer core lateral wall and form the outer of inner core
Air drain (52) on side wall corresponds.
6. production method according to claim 5, it is characterised in that: be also equipped on the bottom surface for forming outer core (4) logical
Air drain (42), the air channel (42) correspond with the air drain (52) formed on outer core lateral wall respectively.
7. manufacturing method according to claim 1, it is characterised in that: in step 3, the air drain (52) is equally spaced
It is distributed in respective external wall, the width of the air drain (52) is 0.4~0.7mm.
8. production method according to claim 7, it is characterised in that: the air drain quantity on the outer outer core of molding is 2
~12, the air drain quantity in forming on outer core is 2~6.
9. manufacturing method according to claim 1, it is characterised in that: in step 1, the die body includes die cap (1),
Rear cover (2), die-cushion (3) and top stick, the top stick are set in die-cushion (3), and the rear cover (2) is connected under die-cushion (3)
Portion, the die cap (1) are nested on the top of die-cushion (3), and the lower part of the die cap (1) is connected with the upper side wall screw thread of rear cover (2)
It connects, the top of the die cap (1) is provided with die cap through-hole, forms forming cavity between the side wall and die-cushion top surface of the die cap through-hole
(11)。
10. manufacturing method according to claim 1, it is characterised in that: the outer core (4) of the molding and molding inner core (5) are equal
For alloy core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130524.7A CN109014003A (en) | 2018-09-27 | 2018-09-27 | A kind of production method of cold upsetting die of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130524.7A CN109014003A (en) | 2018-09-27 | 2018-09-27 | A kind of production method of cold upsetting die of car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109014003A true CN109014003A (en) | 2018-12-18 |
Family
ID=64620651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811130524.7A Pending CN109014003A (en) | 2018-09-27 | 2018-09-27 | A kind of production method of cold upsetting die of car |
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| Country | Link |
|---|---|
| CN (1) | CN109014003A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756536A (en) * | 2020-12-29 | 2021-05-07 | 铭昊汽车金属零部件(广州)有限公司 | Forging die for automobile step parts |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202239438U (en) * | 2011-09-28 | 2012-05-30 | 重庆秋田齿轮有限责任公司 | Combined structure for mould used for forging pawl gear forged blank |
| CN102806296A (en) * | 2012-07-27 | 2012-12-05 | 苏州市东立机械有限公司 | Female die structure of bolt assembly |
| CN202667527U (en) * | 2012-05-30 | 2013-01-16 | 浙江振华紧固件有限公司 | Cold heading forming mold |
| CN203076512U (en) * | 2013-03-11 | 2013-07-24 | 浙江新东方汽车零部件有限公司 | Die for forming shaft workpiece in cold heading manner |
| CN103252627A (en) * | 2013-05-24 | 2013-08-21 | 盘起工业(大连)有限公司 | Two-layer combined concave mould and machining method thereof |
| CN203853498U (en) * | 2014-03-19 | 2014-10-01 | 河南航天精工制造有限公司 | Hot upsetting mold of upper die molding and upper die used for hot upsetting mold |
| CN206702142U (en) * | 2017-05-19 | 2017-12-05 | 三门通顺铆钉有限公司 | Cold upsetting die of car |
-
2018
- 2018-09-27 CN CN201811130524.7A patent/CN109014003A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202239438U (en) * | 2011-09-28 | 2012-05-30 | 重庆秋田齿轮有限责任公司 | Combined structure for mould used for forging pawl gear forged blank |
| CN202667527U (en) * | 2012-05-30 | 2013-01-16 | 浙江振华紧固件有限公司 | Cold heading forming mold |
| CN102806296A (en) * | 2012-07-27 | 2012-12-05 | 苏州市东立机械有限公司 | Female die structure of bolt assembly |
| CN203076512U (en) * | 2013-03-11 | 2013-07-24 | 浙江新东方汽车零部件有限公司 | Die for forming shaft workpiece in cold heading manner |
| CN103252627A (en) * | 2013-05-24 | 2013-08-21 | 盘起工业(大连)有限公司 | Two-layer combined concave mould and machining method thereof |
| CN203853498U (en) * | 2014-03-19 | 2014-10-01 | 河南航天精工制造有限公司 | Hot upsetting mold of upper die molding and upper die used for hot upsetting mold |
| CN206702142U (en) * | 2017-05-19 | 2017-12-05 | 三门通顺铆钉有限公司 | Cold upsetting die of car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756536A (en) * | 2020-12-29 | 2021-05-07 | 铭昊汽车金属零部件(广州)有限公司 | Forging die for automobile step parts |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |