CN108081114A - A kind of formwork is with mold core with mill group die face taper method and system - Google Patents
A kind of formwork is with mold core with mill group die face taper method and system Download PDFInfo
- Publication number
- CN108081114A CN108081114A CN201711460665.0A CN201711460665A CN108081114A CN 108081114 A CN108081114 A CN 108081114A CN 201711460665 A CN201711460665 A CN 201711460665A CN 108081114 A CN108081114 A CN 108081114A
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- China
- Prior art keywords
- mold core
- formwork
- clamping device
- die face
- group die
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- 238000009415 formwork Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000227 grinding Methods 0.000 claims description 12
- 238000003754 machining Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000010892 electric spark Methods 0.000 description 14
- 238000000465 moulding Methods 0.000 description 11
- 238000009740 moulding (composite fabrication) Methods 0.000 description 11
- 239000000956 alloy Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 238000009760 electrical discharge machining Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a kind of formwork and mold core with mill group die face taper method, formwork is processed on the same device, using same fixture and angle with mold core.A kind of formwork is also disclosed with mold core with mill group die face taper system, including equipment and fixture, for processing the formwork and mold core that cooperate.Compared with prior art, formwork of the present invention is with mold core with mill group die face taper method and system, it ensure that the angle of group die face and precision uniformity, group die face contacts for complete face, the frictional force of generation increases considerably, in addition formwork increases the compression of mold core, and the fatigue life value of mold increases substantially.
Description
Technical field
The present invention relates to mould manufacturing field, especially a kind of formwork is with mold core with mill group die face taper method and system.
Background technology
At present, the hex nut within M10 ~ M24 generally using high-speed cold heading machine produce, high-speed cold heading machine have at a high speed, it is high-precision
The productive prospectings such as degree, high stable, cold-heading speed between 100 ~ 300/minute, be higher by than the speed of traditional cold headers 2 times ~
5 times.During high speed cold-pressed nut, mold bears the effect of high temperature, high speed, heavy shock loads, and traditional molding die makes
Use the service life<520h, average life span 260h or so.Since mold service life is short, cause cold upsetting production operating efficiency low, the mold longevity
Cost in the life cycle remains high.
The content of the invention
The present invention provides a kind of formwork that can improve service life with mold core with mill group die face taper method and system.
To achieve the above object, the present invention provides a kind of formwork with mold core with mill group die face taper method, formwork and mold core
On the same device, it is processed using same fixture and angle.
In a wherein embodiment, the equipment is computer controlled grinding machine.
In a wherein embodiment, the fixture includes fixed seat and can be clamped around the clamping device that own axes rotate
Device rotation is installed in fixed seat, and clamping device center line can be relatively fixed transverse rotation predetermined angle, formwork and a mold core
It can be fixed respectively by clamping device, go out the cone of predetermined angle in formwork endoporus and mold core Excircle machining respectively using the equipment
Degree.
In a wherein embodiment, the clamping device is scroll chuck.
The present invention also provides a kind of formwork and mold core with mill group die face taper system, including equipment and fixture, for processing
The formwork and mold core of mutual cooperation.
In a wherein embodiment, the equipment is computer controlled grinding machine.
In a wherein embodiment, the fixture includes fixed seat and can be clamped around the clamping device that own axes rotate
Device rotation is installed in fixed seat, and clamping device center line can be relatively fixed a transverse rotation predetermined angle, and clamping device is used
In fixing formwork and mold core, go out the cone of predetermined angle after fixed in formwork endoporus and mold core Excircle machining respectively using the equipment
Degree.
In a wherein embodiment, the clamping device is scroll chuck.
The beneficial effects of the invention are as follows：Formwork of the present invention, with mill group die face taper method and system, ensure that group with mold core
The angle of die face and precision uniformity, group die face contact for complete face, and the frictional force of generation increases considerably, in addition formwork pair
The compression of mold core increases, and the fatigue life value of mold increases substantially.
Description of the drawings
The high speed nut forming machine that Fig. 1 is applied by formwork of the embodiment of the present invention and mold core with mill group die face taper method and system
With the view sub-anatomy of nut stroke mould.
Fig. 2 is the bottom view of stroke formwork in the nut stroke mould of high speed nut forming machine shown in Fig. 1.
Fig. 3 is the bottom view of interior regular hexagon bolt in the nut stroke mould of high speed nut forming machine shown in Fig. 1.
Fig. 4 is the assembling view of the nut stroke mould of high speed nut forming machine shown in Fig. 1.
Fig. 5 is schematic diagram of the formwork of the embodiment of the present invention with mold core with mill group die face taper method.
Fig. 6 by formwork of the embodiment of the present invention and mold core with the high speed nut that mill group die face taper method and system is applied into
The schematic diagram of type machine electric spark high current machining center seat step in nut stroke mould processing method.
Fig. 7 by formwork of the embodiment of the present invention and mold core with the high speed nut that mill group die face taper method and system is applied into
The schematic diagram of type machine four forming steps of electric spark in nut stroke mould processing method.
Fig. 8 is first time molding electrode shape schematic diagram in four shapings of electric spark shown in Fig. 7.
Fig. 9 is second of molding electrode shape schematic diagram in four shapings of electric spark shown in Fig. 7.
Figure 10 is the molding electrode shape schematic diagram of third time in four shapings of electric spark shown in Fig. 7.
Figure 11 is the 4th molding electrode shape schematic diagram in four shapings of electric spark shown in Fig. 7.
Specific embodiment
Below in conjunction with the accompanying drawings and example, the present invention will be further described.
In the present embodiment, formwork is used with mold core with the high speed nut forming machine that mill group die face taper method and system is applied
Nut stroke mould is primarily adapted for use in the high speed nut forming machine of 5 stations, 6 stations, nut specification limit be meet GB/T6170,
The cold heading technique production of M10 ~ M24 of the national regulations such as GB/T6171, GB/T6172.1, GB/T6173, GB/T6174, GB/T56
Nut, since this serial mold materials is consistent with manufacturing process principle, parameter similar, the present embodiment is mainly with the mould of M12
It is illustrated exemplified by tool.
In the present embodiment, as shown in Fig. 1 to 5, high speed nut forming machine includes stroke formwork 1, upper mold with nut stroke mould
Core 2, lower mold core 3, retaining element（Retaining element is interior regular hexagon bolt 4 in the present embodiment）.1 interposition of stroke formwork installs
There is formwork endoporus 11, formwork endoporus top is bellmouth, to accommodate upper mold core 2 and lower mold core 3.Formwork endoporus lower part is screw thread
Hole to coordinate with interior regular hexagon bolt 4, coordinates to fix upper mold core 2 under by interior regular hexagon bolt 4 and threaded hole
Mold core 3.
Upper mold core 2 uses hard alloy material with lower mold core 3, is satisfied by physical performance index：84 ~ 85HRA of hardness, bending resistance
3100 ~ 3200N/mm of intensity2, cobalt magnetic 16 ~ 17%, 2 ~ 2.5 μm of granularity, A02+B00 grades of porosity, C00 grades of free charcoal element, α phases 1 ~
2, β phases 0.5 ~ 2.0, it is impossible to have η phases.Can also lower mold core 3 use above-mentioned material, and upper mold core 2 using traditional YG20C,
YG20 or performance make similar to the hard alloy of the trade mark, 82 ~ 85HRA of hardness of this series hard alloy, and bending strength 2200 ~
2500N/mm2, cobalt magnetic 20%, 1.2 μm or so of granularity.
The failure that traditional high speed cold-heading nut mold has 90% ratio is appeared in lower mold core, and the form of expression of failure has circle
Arc bottom selenodont pit, inner bore perimeter collapse block, the separation of upper mold core lower mold core and seamed edge abrasion, lower mold core lower surface pockmark
Deng.Curved bottom crescent moon pit, the separation of upper mold core lower mold core and seamed edge abrasion, lower mold core bottom table are judged according to failure analysis
It may be cemented carbide material mechanical property problem that face pockmark, which is, it is also possible to be process issues.Interior sky periphery collapses block only
It can be cemented carbide material mechanical property problem.
According to failure analysis and tens of time Experimental Comparisons, YG20, YG20C or property that traditional molding die selects are determined
Can the hard alloy of the similar trade mark there are bending strength is low, granularity is partially thin, voidage rank is higher, carbide rank is unstable etc.
Defect.The above-mentioned physical performance index of final definite hard alloy（Material composition and technique are grasped by hard alloy producer, are met
Mechanical property）, processing technology and performance through testing hard alloy reach expected requirement.
In the present embodiment, formwork is used with mold core with the high speed nut forming machine that mill group die face taper method and system is applied
The processing method of nut stroke mould includes the following steps：Formwork making → mold core making → formwork is with mold core with mill group die face taper
→ electric spark high current machining center seat → group mould（2.5 ~ 3mm of intrusion）The four shaping → polishing → mark → inspections of → electric spark
Check-in storehouse.
Key step is briefly described below.Formwork making includes vehicle hole, milling side, heat treatment, cylindrical grinding, grinding out etc.
Step.Mold core making includes cylindrical grinding, grinds endoporus.
As shown in figure 5, formwork and mold core with mill group die face taper be formwork with upper and lower mold core by computer controlled grinding machine 5, make
Processing is ground with same set of grinding clamp and angle.Grinding clamp includes fixed seat（It is not drawn into）And it is rotatably mounted to
Scroll chuck 6 in fixed seat（Or other clamping devices）, 6 center line of scroll chuck can be relatively fixed a transverse rotation
5 degree（As indicated by the arrows in the figure）, rotated with reference to scroll chuck 6 around own axes, 5 degree can be ground in formwork endoporus（A is signified in figure
Angle）Taper, upper and lower mold core peripheral milling goes out 5 degree of taper.
In the present embodiment, formwork includes equipment and fixture with mold core with mill group die face taper system, for processing phase interworking
The formwork and mold core of conjunction.The equipment can be computer controlled grinding machine.The fixture can include fixed seat and can be around own axes
The clamping device of rotation, clamping device rotation are installed in fixed seat, and clamping device center line can be relatively fixed a transverse rotation
Predetermined angle, clamping device use the equipment respectively outside formwork endoporus and mold core for fixing formwork and mold core after fixed
Circle processes the taper of predetermined angle.In the present embodiment, the clamping device is scroll chuck.
As shown in fig. 6, electric spark high current machining center seat is to be packed into upper mold core in the endoporus of formwork, to upper mold core
The carry out roughing of endoporus.Group mould be that upper and lower mold core and interior regular hexagon bolt are fitted into formwork endoporus, and upper mold core into
Row intrusion is 2.5 ~ 3mm（H meanings size in figure）Compression molding operation.As shown in fig. 7, four shapings of electric spark are to upper and lower mould
Core carries out four electrical discharge machinings, and each electrode, electric current, equipment are all had any different.Electrode shape be respectively regular hexagonal section+
End cylinder, regular hexagonal section+end chamfering, regular hexagonal section+end chamfering, cylinder（Respectively as Fig. 8,9,10,
Shown in 11）, size is respectively 17.35mm（Regular hexagon opposite side size）、17.3mm、17.35mm、13.8mm.Four processing
Electric current successively decreases step by step from 14A ~ 6A.Preceding electrical discharge machining three times is equivalent to roughing and semifinishing, the 4th electrical discharge machining
It is equivalent to finishing.
The processing route of traditional molding die is：Formwork making → mold core cylindrical grinding, mill endoporus → group mould（Intrusion 2 ~
4mm）→ electric spark one-pass molding → polishing → mark → inspection storage, according to failure analysis and Experimental Comparison, upper mold core, lower die
Core separates and the failure modes such as seamed edge abrasion, lower mold core lower surface pockmark, curved bottom crescent moon pit and processing technology have
Much relations, upper mold core, lower mold core separation and seamed edge abrasion belong to pressing mold and cause defect, lower mold core lower surface pockmark, circular arc
Bottom crescent moon pit is likely to be the defects of edm forming causes.
In the present embodiment, formwork and mold core with mill group die face taper be same equipment, using same fixture and angle into
Capable processing, the favourable angle that ensure that group die face and precision uniformity, group die face contact for complete face, the friction of generation
Power increases considerably, and in addition formwork increases the compression of mold core, and the fatigue life value of mold increases substantially.The present invention's adds
In work technique, while the pressing mold amount of group mould is controlled more accurate, by the control of the optimum value of pressing mold amount in 2.5 ~ 3mm, favorably
Reduce die life scattered error.
In the present embodiment, the shaping of electric spark four times be added on the basis of traditional electric spark one-pass molding three times into
Type, different number edm formings choosings use at the time of molding electrode, electric current, equipment are all had any different, preceding electrical discharge machining three times
Roughing and semifinishing are equivalent to, the 4th time electrical discharge machining is equivalent to finishing.The shape of processing electrode used therein, ruler every time
It is very little different（It is specifically shown in attached drawing）, four times the electric current processed successively decreases step by step from 14A ~ 6A.Four moulding process production of electric spark
The mold bore area gone out eliminates the defects of carbon distribution generated in traditional electrical discharge machining, spot corrosion, carbide scaling loss.
It is proved through test of many times, the high speed cold-heading screw nut die for carrying out selection by the present embodiment and fabricating uses the longevity
Life>1000h, average life span>900h.
Claims (8)
1. a kind of formwork and mold core are the same as mill group die face taper method, which is characterized in that formwork with mold core on the same device, use
Same fixture and angle are processed.
2. according to the method described in claim 1, it is characterized in that, the equipment is computer controlled grinding machine.
3. according to the method described in claim 1, it is characterized in that, the fixture includes fixed seat and can be rotated around own axes
Clamping device, clamping device rotation is installed in fixed seat, clamping device center line can be relatively fixed a transverse rotation and preset
Angle, formwork can be fixed with mold core by clamping device respectively, using the equipment respectively in formwork endoporus and mold core Excircle machining
Go out the taper of predetermined angle.
4. according to the method described in claim 3, it is characterized in that, the clamping device is scroll chuck.
5. a kind of formwork is with mold core with mill group die face taper system, which is characterized in that including equipment and fixture, for processing mutually
The formwork and mold core of cooperation.
6. system according to claim 5, which is characterized in that the equipment is computer controlled grinding machine.
7. system according to claim 5, which is characterized in that the fixture includes fixed seat and can be rotated around own axes
Clamping device, clamping device rotation is installed in fixed seat, clamping device center line can be relatively fixed a transverse rotation and preset
Angle, clamping device are added in formwork endoporus and mold core outer circle respectively for fixing formwork and mold core after fixed using the equipment
Work goes out the taper of predetermined angle.
8. system according to claim 7, which is characterized in that the clamping device is scroll chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460665.0A CN108081114A (en) | 2017-12-29 | 2017-12-29 | A kind of formwork is with mold core with mill group die face taper method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460665.0A CN108081114A (en) | 2017-12-29 | 2017-12-29 | A kind of formwork is with mold core with mill group die face taper method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108081114A true CN108081114A (en) | 2018-05-29 |
Family
ID=62179764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711460665.0A Pending CN108081114A (en) | 2017-12-29 | 2017-12-29 | A kind of formwork is with mold core with mill group die face taper method and system |
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| CN (1) | CN108081114A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1027560A (en) * | 1965-03-02 | 1966-04-27 | De Vlieg Machine Co | Improved grinding fixture for the grinding of spade drills |
| CN101585132A (en) * | 2008-05-23 | 2009-11-25 | 苏州鼎金精密五金有限公司 | Processing method of unit die of nut forming machine |
| CN101607375A (en) * | 2008-06-21 | 2009-12-23 | 襄樊东捷精密机械有限公司 | Universal boring grinding machine |
| CN201711823U (en) * | 2010-06-30 | 2011-01-19 | 陈海蛟 | High-precision numerical control internal grinder |
| CN202540066U (en) * | 2012-04-09 | 2012-11-21 | 无锡九条龙汽车设备有限公司 | Conical-surface grinding machine |
| CN103084942A (en) * | 2013-01-25 | 2013-05-08 | 江苏瑞普机床有限公司 | Small-hole inner conical surface precision computer numerical control (CNC) grinder |
| CN203495697U (en) * | 2013-10-21 | 2014-03-26 | 北京实验工厂 | Precise grinder taper hole angle grinding device |
| CN205834930U (en) * | 2016-07-26 | 2016-12-28 | 吕绪财 | Six side's drill steel tapering milling drums |
| CN206334979U (en) * | 2016-12-30 | 2017-07-18 | 上海上标汽车紧固件有限公司 | A kind of car cold forming open-close module of bulb class part |
| CN106955960A (en) * | 2017-05-19 | 2017-07-18 | 三门通顺铆钉有限公司 | Cold upsetting die of car and its processing technology |
-
2017
- 2017-12-29 CN CN201711460665.0A patent/CN108081114A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1027560A (en) * | 1965-03-02 | 1966-04-27 | De Vlieg Machine Co | Improved grinding fixture for the grinding of spade drills |
| CN101585132A (en) * | 2008-05-23 | 2009-11-25 | 苏州鼎金精密五金有限公司 | Processing method of unit die of nut forming machine |
| CN101607375A (en) * | 2008-06-21 | 2009-12-23 | 襄樊东捷精密机械有限公司 | Universal boring grinding machine |
| CN201711823U (en) * | 2010-06-30 | 2011-01-19 | 陈海蛟 | High-precision numerical control internal grinder |
| CN202540066U (en) * | 2012-04-09 | 2012-11-21 | 无锡九条龙汽车设备有限公司 | Conical-surface grinding machine |
| CN103084942A (en) * | 2013-01-25 | 2013-05-08 | 江苏瑞普机床有限公司 | Small-hole inner conical surface precision computer numerical control (CNC) grinder |
| CN203495697U (en) * | 2013-10-21 | 2014-03-26 | 北京实验工厂 | Precise grinder taper hole angle grinding device |
| CN205834930U (en) * | 2016-07-26 | 2016-12-28 | 吕绪财 | Six side's drill steel tapering milling drums |
| CN206334979U (en) * | 2016-12-30 | 2017-07-18 | 上海上标汽车紧固件有限公司 | A kind of car cold forming open-close module of bulb class part |
| CN106955960A (en) * | 2017-05-19 | 2017-07-18 | 三门通顺铆钉有限公司 | Cold upsetting die of car and its processing technology |
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